Standard No.:	SH/T 1780-2015
English Name:	Isoprene rubber(IR)
Chinese Name:	异戊二烯橡胶(IR)
Professional Classification:	SH    Professional Standard - Petrochemical
Issued by:	Ministry of Industry and Information Technology
Issued on:	2015-07-14
Implemented on:	2016-1-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	3000 words
Price(USD):	150.0
Delivery:	via email in 1 business day

1 Scope This standard specifies the classification, technical requirements, test methods, inspection rules, packaging, marking, storage and transportation for isoprene rubber. This standard is applicable to isoprene rubber prepared by solution polymerization via rare earth catalysis. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 528-2009 Rubber, vulcanized or thermoplastic - Determination of tensile stress-strain properties (ISO 37:2005, IDT) GB/T 1232.1-2008 Rubber, unvulcanized - Determinations using a shearing-disc viscometer - Part 1: Determination of Mooney viscosity (GB/T 1232.1-2000, ISO 289-1:1994, NEQ) GB/T 3516-2006 Rubber - Determination of solvent extract (ISO 1407:1992, MOD) GB/T 4498.1-2013 Rubber - Determination of ash - Part 1: Muffle furnace method (ISO 247:2006, MOD) GB/T 7043.2-2001 Rubber - Determination of copper content (ISO 6101-3:1997, NEQ) GB/T 11202-2003 Rubber - Determination of iron content - 1,10-Phenanthroline photometric method (ISO 1657:1986, NEQ) GB/T 19187 Sampling procedures for inspection of raw synthetic rubber GB/T 19188 Rubber, raw natural and raw synthetic - General guidance on storage (ISO 7664:2000, IDT) GB/T 24131-2009 Rubber, raw - Determination of volatile matter content (ISO 248:2005, MOD) GB/T 30918-2014 Non-oil-extended, solution-polymerized isoprene rubber (IR) - Evaluation procedure (ISO 2303:2011, MOD) ISO 1795-2007 Rubber, raw natural and raw synthetic - Sampling and further preparative procedures 3 Product classification Isoprene rubber is classified into isoprene rubber for general products and isoprene rubber for environmental protection products according to different application fields.   Isoprene rubber for general products is divided into four grades according to Mooney viscosity, namely IR60, IR70, IR80 and IR90, whose corresponding central values are 60, 70, 80 and 90 respectively. Isoprene rubber for environmental protection products is divided into four grades according to Mooney viscosity, namely IR60F, IR70F, IR80F and IR90F, whose corresponding central values are 60, 70, 80 and 90 respectively.

Foreword II 1 Scope 2 Normative references 3 Product classification 4 Technical requirements 5 Test methods 6 Inspection rules 7 Packaging, marking, storage and transportation 8 Shelf life Annex A (Normative) Determination of 2,6-di-tert-butyl-p-cresol (antioxidant 264) content in isoprene rubber