热固性塑料标准-分析测试百科网

ASTM D4217-07(2017) 热固性涂料粉末凝胶时间的标准测试方法

1.1 This test method determines the length of time a thermosetting coating powder takes to gel on a polished metal surface at a specified temperature, such as 204°C (400°F). The determination of the gel time is a very simple method for the characterization and quality control of coating powders. However, the gel time determined by this method is not directly related to the time for the coating powder to cure in practical applications. 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. 1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Test Method for Gel Time of Thermosetting Coating Powder

ICS: 83.080.10
CCS
发布: 2017-06-01
实施

ASTM D4242-07(2017) 热固性涂层粉末倾斜板流动的标准测试方法

1.1 This test method specifies a method for determining the flow characteristics of a fused thermosetting coating powder down a plane inclined at a set angle to the horizontal. The test gives an indication of the degree of melt flow that may occur during the curing of the coating powder. This characteristic contributes to the coherence of the coating, to its surface appearance and to the degree of coverage over sharp edges (see Test Method D2967), however, it should not be used as the sole factor for judgment. The test acts as a useful method for checking for batch to batch variation in the behavior of a given coating powder. Correlation between the results from coating powders of differing composition is not to be expected. This method is unlikely to yield meaningful results with coating powders which have gel times of less than one minute at the test temperature (see Test Method D4217). Oven drafts, angle of inclination and pellet variations significantly affect results making inter-lab reproducibility somewhat difficult to correlate. 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 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 to determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Test Method for Inclined Plate Flow for Thermosetting Coating Powders

ICS: 83.080.10
CCS
发布: 2017-06-01
实施

ASTM D4640-86(2017) 测定热固性酚醛树脂的中和固化时间的标准测试方法

1.1 This test method covers the determination of the cure rate at any specified temperature for a thermosetting phenolformaldehyde resin. The time at that temperature required to make a fluid mixture change into a hard immovable mass indicates speed of cure. 1.2 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. 1.3 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. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Test Method for Determining Stroke Cure Time of Thermosetting Phenol-Formaldehyde Resins

ICS: 83.080.10
CCS
发布: 2017-06-01
实施

ISO 15064:2017 塑料.聚氨酯生产中使用的芳族异氰酸酯.甲苯二异氰酸酯(TDI)中同分异构体比率的测定

This document specifies methods for the measurement of toluene-2,6-diisocyanate in mixtures of the 2,4- and 2,6-isomers. Two methods based on infrared spectroscopy are used to give accurate results over a broad range of isomer concentrations. Method A is applicable to toluenediisocyanate (TDI) samples containing between 5 % and 95 % of the 2,6-isomer. Method B is applicable to TDI samples containing 0 % to 5 % of the 2,6-isomer. Both methods are based on the quantitative measurement of absorption bands arising from out-of-plane C−H deformation vibrations of the aromatic ring at 810 cm−1 and 782 cm−1 (12,3 μm and 13,8 μm).

Plastics - Aromatic isocyanates for use in the production of polyurethanes - Determination of the isomer ratio in toluenediisocyanate (TDI)

ICS: 83.080.10
CCS: G31
发布: 2017-06
实施

BS ISO 26603:2017 塑料.聚氨酯生产用芳族异氰酸盐.总氯含量的测定

Plastics. Aromatic isocyanates for use in the production of polyurethanes. Determination of total chlorine

ICS: 83.080.10
CCS: G31
发布: 2017-03-31
实施: 2017-03-31

BS ISO 14900:2017 塑料用于生产聚氨酯的多元醇羟值的测定

Plastics. Polyols for use in the production of polyurethane. Determination of hydroxyl number

ICS: 83.080.10
CCS: G31
发布: 2017-03-31
实施: 2017-03-31

ISO 14900:2017 塑料. 用于聚氨酯生产的多元醇. 羟值的测定

Plastics - Polyols for use in the production of polyurethane - Determination of hydroxyl number

ICS: 83.080.10
CCS: G31
发布: 2017-03-01
实施

ISO 26603:2017 塑料. 用于聚氨酯生产的芳香族异氰酸酯. 总氯含量的测定

This document specifies the determination of the total chlorine content of aromatic isocyanates used in the preparation of polyurethanes. The difference between the total chlorine content and the hydrolyzable chlorine content (see ISO 15028) is a measure of the process solvents left in the product. Both test methods are applicable to a variety of organic compounds, including aliphatic isocyanates, but the amount of sample used might need to be adjusted. These test methods can be used for research or for quality control. NOTE This document is technically equivalent to ASTM D4661–03.

Plastics - Aromatic isocyanates for use in the production of polyurethanes - Determination of total chlorine