共找到 916 条与 胶乳和生橡胶 相关的标准,共 62 页
Determination methods of total solids, pH and viscosity and judgement of degree of precure of compounded latices
Reclaimed isobutene-isoprene (IIR) rubber. Evaluation procedure
Reclaimed rubber derived from products containing mainly natural rubber. Evaluation procedure
Raw rubber or unvulcanized compounds. Determination of green strength
Rubber, raw. Determination of volatile-matter content. Hot-mill method and oven method
This standard covers the test methods for synthetic rubber lattices ABR, BR, CR, IIR, NBR, NCR, NIR, PBR, PSBR, SBR, SCR, SIR, synthetic rubber lattices with substituted carboxylic acid groups on the polymer chain, and reinforced synthetic rubber lattices. Covered tests include the procedure for collecting samples and determining total solid content, volatile unsaturates content, pH, surface tension, viscosity, coagulum, bound styrene, Mooney viscosity, mechanical stability, polystyrene reinforcement in contained polymer, and residual acrylonitrile content. Each test method contains information on material exceptions, apparatus, and test procedures.
Standard Test Methods for Rubber Latices—Synthetic
ISO 19050:2015 describes the method of determination of both major and trace levels of metal contents in rubber ? raw, vulcanized ? by ICP-OES.
Rubber, raw, vulcanised — Determination of metal content by ICP-OES
Reclaimed isobutene-isoprene (IIR) rubber - Evaluation procedure
Reclaimed rubber derived from products containing mainly natural rubber - Evaluation procedure
This document specifies two methods for the determination of volatile-matter content in raw rubbers by using a hot mill or an oven. These methods are applicable to the determination of the volatile-matter content in the “R” group of rubbers listed in ISO 1629. These are rubbers having an unsaturated carbon chain, for example natural rubber and synthetic rubbers derived at least partly from di-olefins. These methods can also be applicable to other raw rubbers, but in these cases it is necessary to demonstrate that the change in mass is due solely to loss of actual volatile matter and not to rubber degradation. The hot-mill method is not applicable to natural rubber, to synthetic rubbers which are too difficult to handle on a hot mill or to synthetic rubbers in powder or chip form. The two methods do not necessarily give identical results. Therefore, in the case of dispute, the oven method, procedure A, is the reference method. NOTE The applicability of each test method to various types of rubber is summarized in Annex A.
Rubber, raw - Determination of volatile-matter content - Part 1: Hot-mill method and oven method
1.1?This specification covers requirements for first grade concentrated natural rubber latex (see Table 1) of the following categories: Category 1—Centrifuged Hevea natural latex stabilized with ammonia only. Category 2—Creamed Hevea natural latex stabilized with ammonia only.
Standard Specification for Rubber—Concentrated, Ammonia Stabilized, Creamed, and Centrifuged Natural Latex
Rubber, raw — Determination of bound acrylonitrile content in acrylonitrile-butadiene rubber(NBR) — Part 2: Kjeldahl method
Rubber, raw natural, and rubber latex, natural —Determination of nitrogen content
Rubber, raw natural, and rubber latex, natural —Determination of nitrogen content
Rubber, raw — Determination of bound acrylonitrile content in acrylonitrile-butadiene rubber (NBR) —Part 1: Combustion (Dumas) method
Synthetic rubber latex — Preparation of dry polymer
Natural rubber latex concentrate — Centrifuged or creamed, ammonia-preserved types — Specifications
Synthetic rubber latex — Preparation of dry polymer
Rubber, raw — Determination of bound acrylonitrile content in acrylonitrile-butadiene rubber (NBR) —Part 1: Combustion (Dumas) method
Natural rubber latex concentrate — Centrifuged or creamed, ammonia-preserved types — Specifications
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