T/CRIA 25001-2017 Pre-dispersed Rubber Additives General Specification

Scope

Scope: This standard specifies the terms and definitions, technical requirements, and test methods for pre-dispersed rubber additives. This standard applies to pre-dispersed rubber additives with a rubber additive content greater than 40% and a carrier that is a polymer. Main technical content: 3 Terms and definitions The following terms and definitions apply to this document. 3.1 Pre-dispersed rubber additives A quantitatively dispersed rubber additive evenly distributed into a quantitatively determined polymer carrier and molded into a certain shape of mixture. 3.2 Active content The content of rubber additives in pre-dispersed rubber additives, often converted by the content of sulfur or metal oxides in pre-dispersed rubber additives. 3.3 Dispersibility The degree of dispersion of rubber additives in a polymer carrier. 4 Technical requirements 4.1 The surface of pre-dispersed rubber additives should not stick together. 4.2 The sieve residue of 20 mesh should be greater than or equal to 99.5%. 4.3 Other technical requirements shall be determined by mutual consultation between the supplier and the buyer. 5 Test methods 5.1 General rules 5.1.1 Unless otherwise specified, the reagents and water used in this standard refer to analytical-pure reagents and Class III water in accordance with GB/T 6682. 5.1.2 The instruments should be clean and dried and calibrated before use. 5.1.3 The samples should not have air bubbles or pores, and the surface should be smooth. 5.1.4 When heating the samples, care should be taken to avoid losses of volatile components causing errors. 5.1.5 The environmental adjustment and standard temperature of the test for the samples shall be in accordance with GB/T 2941. 5.1.6 The determination of test results shall be carried out in accordance with the method of comparing the rounded values in GB/T 8170. 5.2 Sample preparation 5.2.1 Take about 200g of samples (accurate to 1g) and pass them through the rollers four

Development Information

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