83.080.20 (Thermoplastic materials) 标准查询与下载

ASTM D6338-09 高交联热塑性硫化产品(HCTPVS)的标准分类系统

1.1 This classification system covers highly crosslinked thermoplastic vulcanizates (HCTPVs) for extrusion, molding and other fabrication methods. HCTPVs are thermoplastic elastomers (TPEs) consisting of two or more polymer systems at least one of which is rubbery and highly (>95 %) crosslinked and at least one of which is thermoplastic, with each system having its own phase. The thermoplastic phase will tend to be continuous and the rubbery phase discontinuous. The high level of crosslinking and ultrafine particle size (ca 1 μm diameter) of the rubbery phase give rise to properties more closely approaching those of conventional thermoset rubber, when compared to the same thermoplastic/rubbery polymer composition with a lower level (≤95 %) of crosslinking. The HCTPV polymer compositions may contain fillers, reinforcing agents, plasticizers, resins, antidegradants, colorants and other beneficial constituents. Recycled HCTPVs are not covered in this classification system. 1.2 Included in this classification system are the properties necessary to identify the respective compositions. For specialized applications, other requirements may be needed to identify specific characteristics. 1.3 As given in IEEE/ASTM SI-10, values in SI units are to be regarded as standard. Note 18212;There is no known ISO equivalent to this standard. 1.4 This standard is based on testing completed in accordance with ASTM standard test methods. 1.5 The following safety hazards caveat pertains only to the test methods portion, Section 12, of this classification system. This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Classification System for Highly Crosslinked Thermoplastic Vulcanizates (HCTPVs) Based on ASTM Standard Test Methods

ASTM D6394-09 磺基塑料(SP)的标准规范

1.1 This specification covers the classification of sulfone plastics suitable for injection molding and extrusion. 1.2 The properties included in this specification are those required to identify the compositions covered. Other requirements necessary to identify particular characteristics important to specialized applications are to be specified by using the suffixes in Section 5. See Guide D 5740. 1.3 This specification is intended to be a means of calling out sulfone plastics used in the fabrication of end items or parts. Material selection can be made by those having expertise in the plastics field only after careful consideration of the design and the performance required of the part, the environment to which it will be exposed, the fabrication process to be employed, the cost involved, and the inherent properties of the material other than those covered by this specification. 1.4 Sulfone polymers, being thermoplastic, are reprocessable and recyclable. This specification allows for the use of those sulfone polymer materials, provided that any specific requirements are met. 1.5 The following safety hazards caveat pertains only to the test method portion, Section 11, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Note 18212;Reference Guide D 7209 for information and definitions related to recycled plastics. Note 28212;ISO 25137 is similar in subject matter but not equivalent to this specification.

Standard Specification for Sulfone Plastics (SP)

ASTM D3679-09 硬质聚氯乙烯档板标准规范

1.1 This specification establishes requirements and test methods for the materials, dimensions, warp, shrinkage, impact strength, expansion, appearance, and windload resistance of extruded single-wall siding manufactured from rigid (unplasticized) PVC compound. Methods of indicating compliance with this specification are also provided. 1.2 The use PVC recycled plastic in this product shall be in accordance with the requirements in Section 4. 1.3 Rigid (unplasticized) PVC soffit is covered in Specification D 4477. 1.4 Siding produced to this specification shall be installed in accordance with Practice D 4756. Reference shall also be made to the manufacturer''s installation instructions for the specific product to be installed. Note 18212;Information with regard to siding maintenance shall be obtained from the manufacturer. 1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.6 The following precautionary caveat pertains to the test method portion only, Section 6, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Note 28212;There is no known ISO equivalent to this standard.

Standard Specification for Rigid Poly(Vinyl Chloride) (PVC) Siding

ASTM D5927-09 基于ISO 试验方法的热塑性聚酯(TPES)注塑和挤塑材料的标准分类系统

1.1 This specification covers thermoplastic polyester materials suitable for molding or extrusion. 1.2 This specification allows for the use of recycled thermoplastic polyester materials provided that the requirements as stated in this specification are met. The proportions of recycled material used, as well as the nature and amount of any contaminant, however, cannot be covered practically in this specification. 1.3 The properties included in this specification are those required to identify the compositions covered. There may be other requirements necessary to identify particular characteristics important to specialized applications. These may be specified by using the suffixes as given in Section 5. 1.4 This classification system and subsequent line callout (specification) are intended to provide a means of calling out plastic materials used in the fabrication of end items or parts. It is not intended for the selection of materials. Material selection should be made by those having expertise in the plastic field after careful consideration of the design and performance required of the part, the environment to which it will be exposed, the fabrication process to be used, the costs involved, and the inherent properties of the material other than those covered by this specification. 1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.6 The following hazards caveat pertains only to the test methods portion, Section 11, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Note 18212;This specification is similar to ISO 7792-1:1995 and ISO 7792-2:1988, although the technical content is significantly different.

Standard Classification System for Thermoplastic Polyester (TPES) Injection and Extrusion Materials Based on ISO Test Methods

ASTM D5930-09 利用瞬间线性源技术测量塑料热传导率的标准试验方法

The relative simplicity of the test method makes it applicable for a wide range of materials (4, 5). The technique is capable of fast measurements, making it possible to take data before the materials suffer thermal degradation. Alternatively, it is possible to study the effect of compositional changes such as chemical reaction or aging (6). Short measurement times permit generation of large amounts of data with little effort. The line-source probe and the accompanying test specimen are small in size, making it possible to subject the sample to a wide range of test conditions. Because this test method does not contain a numerical precision and bias statement, it shall not be used as a referee test method in case of dispute.1.1 This test method covers the determination of the thermal conductivity of plastics over a temperature range from – 40 to 400°C. The thermal conductivity of materials in the range from 0.08 to 2.0 W/m.K can be measured covering thermoplastics, thermosets, and rubbers, filled and reinforced. 1.2 The values stated in SI units shall be regarded as standard. 1.3 This standard does not purport to address the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish proper safety and health practices and determine the applicability of regulatory limitations prior to use. Note 18212;There is no known ISO equivalent to this test method.

Standard Test Method for Thermal Conductivity of Plastics by Means of a Transient Line-Source Technique

ASTM D3679-09a 硬质聚氯乙烯档板的标准规范

1.1 This specification establishes requirements and test methods for the materials, dimensions, warp, shrinkage, impact strength, expansion, appearance, and windload resistance of extruded single-wall siding manufactured from rigid (unplasticized) PVC compound. Methods of indicating compliance with this specification are also provided. 1.2 The use PVC recycled plastic in this product shall be in accordance with the requirements in Section 4. 1.3 Rigid (unplasticized) PVC soffit is covered in Specification D4477. 1.4 Siding produced to this specification shall be installed in accordance with Practice D4756. Reference shall also be made to the manufacturer's installation instructions for the specific product to be installed. Note 18212;Information with regard to siding maintenance shall be obtained from the manufacturer. 1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.6 The following precautionary caveat pertains to the test method portion only, Section 6, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Note 28212;There is no known ISO equivalent to this standard.

Standard Specification for Rigid Poly(Vinyl Chloride) (PVC) Siding

ASTM F639-09 医疗设备用聚乙烯塑料的标准规范

Significance Top X1.2.1 Concentrations of trace metals are measured as extracts in simulated body fluids. The metal’s concentration in extracts is based on the surface area of the plastic extracted from which the total amount of metal deliverable to the patient may be estimated.1.1 This specification covers polyethylene plastics (as defined in Terminology D 883) intended for use in medical device applications involving human tissue contact devices, short-term indwellings of 30 days or less, and fluid transfer devices. The biocompatibility of these materials as a class has not been established. Biocompatibility tests must be conducted on the final product. 1.2 This specification is not applicable to ultra-high molecular weight polyethylenes (UHMWPE) plastics, such as those used in joint implants, and so forth. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. X1.1.1 This practice covers the analysis of extractable metals from plastics intended for use in medical device application. X1.1.2 Formulated raw materials or finished products may be used.

Standard Specification for Polyethylene Plastics for Medical Applications

ASTM F1735-09 修复带人孔管道的PVC衬底用聚氯乙烯(PVC)异型带材的标准规范

1.1 This specification covers requirements and test methods for materials, dimensions, workmanship, extrusion quality, and a form of marking for extruded poly (vinyl chloride)(PVC) profile strips used for field fabrication of PVC liners for existing man-entry (36 to 144 in. (900 to 3650 mm) in vertical dimension) sewer and conduit rehabilitation. 1.2 Profile strip produced to this specification is for use in field fabrication of PVC liners in non-pressure pipe and conduit rehabilitation where the liner is installed into the existing sewer or conduit and the annular space between the liner and the existing sewer or conduit is grouted with cementitious grout. Note 18212;The practice for the installation of PVC liner covered by this specification is Practice F1698. 1.3 This specification includes extruded profile strips made only from materials specified in 6.1. 1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Specification for Poly (Vinyl Chloride)(PVC) Profile Strip for PVC Liners for Rehabilitation of Existing Man-Entry Sewers and Conduits

ASTM D6042-09 用液相色谱法对聚丙烯均聚物配方中酚醛抗氧化剂和酰胺纤维润滑添加剂测定的标准试验方法

Separation and identification of stabilizers used in the manufacture of polypropylene is necessary in order to correlate performance properties with polymer composition. This test method provides a means to determine erucamide slip, Vitamin E, Irgafos 168, Irganox 3114, Irganox 1010, and Irganox 1076 levels in polypropylene samples. This test method is also applicable for the determination of other antioxidants, such as Ultranox 626, Ethanox 330, Santanox R, and BHT, but the applicability of this test method has not been investigated for these antioxidants. The additive-extraction procedure is made effective by the insolubility of the polymer sample in solvents generally used for liquid chromatographic analysis. Under optimum conditions, the lowest level of detection for a phenolic antioxidant is approximately 2 ppm. Note 28212;Other methods that have been used successfully to remove additives from the plastics matrix include thin film, microwave, ultrasonic, and supercritical fluid extractions. Other methods have been used successfully to separate additives including SFC and capillary GC. Irgafos 168 is a phosphite antioxidant. Phosphites are known to undergo both oxidation and hydrolysis reactions. Less Irgafos 168 will be determined in the polymer when oxidation occurs during processing. The HPLC separation is capable of separating the phosphite, phosphate (oxidation product), and hydrolysis product and quantify them if standards are obtained. No significant breakdown of the phosphite antioxidant has been seen due to either extraction technique or the separation presented in this standard.1.1 This test method covers a liquid-chromatographic procedure for the separation of some additives currently used in polypropylene. These additives are extracted with a cyclohexane:methylene chloride mixture using either reflux or ultrasonic bath prior to liquid-chromatographic separation. The ultraviolet absorbance (200 nm) of the compound(s) is measured, and quantitation is performed using the internal standard method. 1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in Section 9. Note 18212;There is no known ISO equivalent to this test method.

Standard Test Method for Determination of Phenolic Antioxidants and Erucamide Slip Additives in Polypropylene Homopolymer Formulations Using Liquid Chromatography (LC)

ASTM F2778-09(2015) 通过镜面反射傅立叶变换红外光谱（R-FTIR）测量聚醚醚酮（PEEK）聚合物的结晶度百分比的标准测试方法

4.1 Mechanical properties of PEEK, such as stiffness or yield strength, are influenced by the level of crystallinity.5 The reported crystallinity index determined by this test method has been correlated with percent crystallinity in PEEK by wide-angle X-ray scattering (WAXS) experiments.2, 3 4.2 This test method may be useful for both process development, process control, product development, and research. 1.1 This test method describes the collection of absorption spectra of polyetheretherketone (PEEK) polymer in filled and unfilled grades, as supplied by a vendor, and the subsequent calculation of the percent crystallinity. The material is evaluated by infrared spectroscopy. The intensity (height) of the absorbance peaks is related to the amount of crystalline regions present in the material. 1.2 This test method can be used for PEEK consolidated forms, such as injection molded parts, as long as the samples are optically flat and smooth. 1.3 The applicability of the infrared method to industrial and medical grade PEEK materials has been demonstrated by scientific studies.2, 3 Percentage of crystallinity is related to R-FTIR measurement by calibration through wide-angle x-ray scattering (WAXS) crystallinity measurements.2, 3 It is anticipated that this test method, involving the peak heights near 1305 cm-1 and 1280 cm-1, will be evaluated in an Interlaboratory Study (ILS) conducted according to Test Method E691. 1.4 This test method does not suggest a desired range of crystallinity for specific applications. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.6 This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Test Method for Measurement of Percent Crystallinity of Polyetheretherketone (PEEK) Polymers by Means of Specular Reflectance Fourier Transform Infrared Spectroscopy (R-FTIR)

ASTM D5422-09 用螺旋挤出式毛细管流变仪测量热塑性材料性能的标准试验方法

This test method is useful for the characterization of thermoplastics and thermoplastic compounds, in terms of viscosity, or resistance to flow. The data produced by this test method has been found useful in both quality-control testing and compound development. However, direct correlation with factory conditions is not implied. Flow-performance data permits quality control of incoming thermoplastics and thermoplastic compounds because the flow parameters are sensitive to molecular weight and molecular-weight distribution. Therefore, this test method may distinguish differences between lots. The shear viscosity or flow viscosity of thermoplastics and thermoplastic compounds will not only be sensitive to the raw-polymer molecular properties, but will also be affected by the type and amount of filler, additive, plasticizer, or stabilizer, by the type of copolymer blend, and by the addition of other compounding materials. This test method can serve as a quality-control tool for either incoming materials or for in-house quality-assurance checks on production mixing. This test method is useful to the research and development of new products in that the rheological behavior of a yet uncharacterized thermoplastic or thermoplastic compound can be measured and considered for comparative analysis.1.1 This test method covers the use of a screw-extrusion-type capillary rheometer for the measurement of flow properties of thermoplastics and thermoplastic compounds. The measured flow properties, which are obtained through laboratory investigation, may help to describe the material behavior that occurs in factory processing. 1.2 Since a screw-type capillary rheometer imparts shear energy to the material during testing, the measurements will usually differ from those obtained with a piston-type capillary rheometer (see Test Method D 3835). 1.3 Capillary rheometer measurements for thermoplastics and thermoplastic compounds are described in Test Method D 3835. 1.4 The values stated in SI units are to be regarded as standard. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Note 18212;There is no known ISO equivalent to this standard.

Standard Test Method for Measurement of Properties of Thermoplastic Materials by Screw-Extrusion Capillary Rheometer

ASTM F624-09 评定医学用热塑性聚氨基甲酸乙酯固体及溶液的标准指南

This guide is intended to aid device fabricators in the selection of proper commercially available polyurethane solids and solutions for their application. The polyurethanes covered by this guide may be thermoformed or solution cast into biomedical devices for use as surgical aids or for implantation as determined to be appropriate, based on supporting biocompatibility and physical test data.1.1 This guide covers the evaluation of thermoplastic polyurethanes in both solid and solution form for biomedical applications. The polymers have been reacted to completion and require no further chemical processing. 1.2 The tests and methods listed in this guide may be referenced in specification containing minimum required values and tolerances for specific end-use products. 1.3 Standard tests for biocompatibility are included to aid in the assessment of safe utilization in biomedical applications. Compliance with these criteria shall not be construed as an endorsement of implantability. Since many compositions, formulations, and forms of thermoplastic polyurethanes in solid and solution forms are within this material class, the formulator or fabricator must evaluate the biocompatibility of the specific composition or form in the intended use and after completion of all manufacturing processes including sterilization. 1.4 Purchase specifications may be prepared by agreement between the buyer and seller by selection of appropriate tests and methods from those listed applicable to the specific biomedical end use. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Guide for Evaluation of Thermoplastic Polyurethane Solids and Solutions for Biomedical Applications

ASTM D6150-09 由于挥发导致的塑料溶胶和有机溶胶的估计加工损失的标准试验方法

The volatile components of a plastisol or organosol influences the weight loss during processing. It is possible that this information will be useful to the producer and user and to environmental interests for estimating the volatiles emitted by the plastisol or organosol during processing. Results obtained by this test method are not strictly equivalent to those experienced during product processing wherein conditions of temperature, air flow, coating mass, and configuration are potentially quite different. This test method is not necessarily applicable to all types of plastisol and organosol applications. Any change in the specified testing time or temperature to accommodate unique applications shall be included in the report (see 7.3).1.1 This test method describes a procedure for the determination of the relative volatility of polyvinyl chloride plastisols and organosols at elevated temperatures. 1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.3 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes, excluding those in tables and figures, shall not be considered as requirements of this standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Note 18212;There is no known ISO equivalent to this test method.

Standard Test Method for Estimating Processing Losses of Plastisols and Organosols Due to Volatility

ASTM D5721-08(2013) 聚烯烃薄膜在热风炉中热老化试验标准实施规程

4.1 Under the severe conditions of this test, the specimens undergo degradation at a rate that is a function of the thermal endurance of the geomembrane under examination. 4.2 The elevated temperature for this practice should represent conditions that are sufficiently severe to induce failure of polyolefin geomembranes within an abbreviated period of time. 4.3 The rate of change of a particular property as a function of temperature may be evaluated using the temperatures and times outlined in Practice D3045. 4.4 Any correlation between this practice and natural life of these materials must be determined for the particular application in which the materials are to be used. 4.5 Air-oven aging can be used to evaluate and compare the performance of various heat stabilizer packages. 1.1 This practice covers a means for estimating the resistance of polyolefin geomembranes to thermal aging in the presence of air. Only the procedure for heat exposure is specified, not the test method or specimen. The effect of heat on any particular property may be determined by selection of the appropriate test method and specimen. 1.2 This practice should be used as a guide to compare thermal aging characteristics of materials as measured by the change in some property of interest. This practice does not predict thermal aging characteristics where interactions between stress, environment, temperature, and time control failure. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Practice for Air-Oven Aging of Polyolefin Geomembranes

ASTM D3275-08(2013) E-CTFE-氟塑料模压、挤压和涂覆材料的标准分类系统

1.1 This classification system covers melt processible molding, extrusion, and coating materials of ethylene-chlorotrifluoroethylene (E-CTFE) fluoroplastics. The resin is a copolymer of ethylene and chlorotrifluoroethylene containing approximately 80 weight8201;% of chlorotrifluoroethylene. 1.2 The values stated in SI units, as detailed in IEEE/ASTM8201;SI-10, are to be regarded as standard. 1.3 The following precautionary statement pertains only to the test methods portion, Section 11 of this classification system.This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.Note 1—Although this classification system and ISO8201;12086-1 and ISO8201;12086-2 differ in approach or detail, data obtained using either are technically equivalent.

Standard Classification System for E-CTFE-Fluoroplastic Molding, Extrusion, and Coating Materials

ASTM D4101-08 丙烯塑料注射和挤出材料的标准规范

1.1 This specification covers polypropylene materials suitable for injection molding and extrusion. Polymers consist of homopolymer, copolymers, and elastomer compounded with or without the addition of impact modifiers (ethylene-propylene rubber, polyisobutylene rubber, and butyl rubber), colorants, stabilizers, lubricants, or reinforcements. 1.2 This specification allows for the use of those polypropylene materials that can be recycled, reconstituted, and reground, provided that: (1) the requirements as stated in this specification are met, and (2) the material has not been modified in any way to alter its conformance to food contact regulations or similar requirements. The proportions of recycled, reconstituted, and reground material used, as well as the nature and the amount of any contaminant, cannot be practically covered in this specification. It is the responsibility of the supplier and the buyer of recycled, reconstituted, and reground materials to ensure compliance. (See Guide D 7209.) 1.3 The values stated in SI units are to be regarded as the standard. Note 18212;The properties included in this specification are those required to identify the compositions covered. There may be other requirements necessary to identify particular characteristics important to specific applications. These will be designated by using the suffixes given in Section 1. 1.4 The following safety hazards caveat pertains only to the test methods portion, Section 13, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Note 28212;There is no similar or equivalent ISO standard.

Standard Specification for Polypropylene Injection and Extrusion Materials

ASTM D3275-08 E-CTFE-氟塑料模压、挤压和涂覆材料的标准分类系统

1.1 This classification system covers melt processible molding, extrusion, and coating materials of ethylene-chlorotrifluoroethylene (E-CTFE) fluoroplastics. The resin is a copolymer of ethylene and chlorotrifluoroethylene containing approximately 80 weight % of chlorotrifluoroethylene. 1.2 The values stated in SI units, as detailed in IEEE/ASTM SI-10, are to be regarded as standard. 1.3 The following precautionary statement pertains only to the test methods portion, Section 11 of this classification system.This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Note 18212;Although this classification system and ISO 12086-1 and ISO 12086-2 differ in approach or detail, data obtained using either are technically equivalent.

Standard Classification System for E-CTFE-Fluoroplastic Molding, Extrusion, and Coating Materials

ASTM D5721-08 聚烯烃土工薄膜在热风炉中老化的标准实施规程

Under the severe conditions of this test, the specimens undergo degradation at a rate that is a function of the thermal endurance of the geomembrane under examination. The elevated temperature for this practice should represent conditions that are sufficiently severe to induce failure of polyolefin geomembranes within an abbreviated period of time. The rate of change of a particular property as a function of temperature may be evaluated using the temperatures and times outlined in Practice D 3045. Any correlation between this practice and natural life of these materials must be determined for the particular application in which the materials are to be used. Air-oven aging can be used to evaluate and compare the performance of various heat stabilizer packages.1.1 This practice covers a means for estimating the resistance of polyolefin geomembranes to thermal aging in the presence of air. Only the procedure for heat exposure is specified, not the test method or specimen. The effect of heat on any particular property may be determined by selection of the appropriate test method and specimen. 1.2 This practice should be used as a guide to compare thermal aging characteristics of materials as measured by the change in some property of interest. This practice does not predict thermal aging characteristics where interactions between stress, environment, temperature, and time control failure. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Practice for Air-Oven Aging of Polyolefin Geomembranes

ASTM D7399-08 用红外分光光度计测定聚丙烯/低密度聚乙烯混合物中聚丙烯数量的标准试验方法

In recycling PP and LDPE, it is important to the end product properties as well as to the processing conditions to know what the purity of the mixture is. In many cases, it is vital to know that the recycled material is reasonably free of a contaminant.1.1 This test method uses an infrared approach for determining the presence of polypropylene (PP) physically mixed in with low density polyethylene – usually for recycling purposes. Note 18212;Quantitative determinations require several standard mixtures in the concentration range of interest and well defined baseline anchoring points. 1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Note 28212;There is no known ISO equivalent to this standard.

Standard Test Method for Determination of the Amount of Polypropylene (PP) in Polypropylene/LDPE Mixtures Using Infrared Spectrophotometer (FTIR)

ASTM D6835-08(2014) 热塑性弹性醚酯模塑和挤制材料的标准分类系统

1.1 This classification system covers segmented block copolyether-ester elastomers suitable for molding and extrusion. 1.2 This classification system allows for the use of segmented block copolyether-ester elastomers that are recycled provided that the requirements as stated in this classification system are met. The proportions of recycled material used, as well as the nature and amount of any contaminant, however, cannot be covered practically in this specification. 1.3 The properties included in this classification system are those required to identify the compositions covered. It is possible that there are other requirements necessary to identify particular characteristics important to specialized applications. One way of specifying them is by using the suffixes as given in Section 5. 1.4 This classification system and subsequent line callout (specification) are intended to provide a means of calling out plastic materials used in the fabrication of end items or parts. It is not intended for the selection of materials. Material selection is best made by those having expertise in the plastic field after careful consideration of the design and the performance required of the part, the environment to which it will be exposed, the fabrication process to be employed, the costs involved, and the inherent properties of the material other than those covered by this classification system. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.6 The following precautionary caveat pertains only to the test methods portion, Section 11, of this classification system. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.Note 1—This standard, ISO 14910-1, and ISO 14910-2 address the same subject matter, but differ in technical content.

Standard Classification System for Thermoplastic Elastomer-Ether-Ester Molding and Extrusion Materials 40;TEEE41;