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Standard Test Method for Rubber´Determination of Bound Styrene in Styrene Butadiene Rubber by Refractive Index
NORMA vydaná dňa 1.1.2019
Označenie normy: ASTM D5775-95(2019)
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.1.2019
Kód tovaru: NS-936571
Počet strán: 4
Približná hmotnosť: 12 g (0.03 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
bound styrene, refractive index, styrene-butadiene rubber (SBR),, ICS Number Code 83.060 (Rubber)
Significance and Use | ||||
4.1 The bound styrene test is a measure of the bound monomeric composition of the rubber. It is used as a check on the accuracy of monomer charging and also as a guide to the uniformity of the product, since the bound styrene content affects the physical properties. |
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1. Scope | ||||
1.1 This test method covers the determination of styrene content, and is intended for general use on solid uncompounded styrene-butadiene copolymers, commonly referred to as SBR, prepared by the emulsion process. SBR polymers prepared in solution will require the use of different refractive index tables because the vinyl content of the butadiene differs from that in the emulsion polymers. It is applicable to polymers having less than 55 % bound styrene. Note 1: The nomenclature used in this test method is in
accordance with Practice D1418.
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, health, and environmental 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. |
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2. Referenced Documents | ||||
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