GB/T 15257-1994 Mixed modulation chloroprene rubber CR321,CR322

GB/T 15257-2008 Mixed modulation chloroprene rubber CR321、CR322

GB 6734 GB 6735 GB 6736 GB 9004 GB/T 528-1998 Rubber,vulcanized or thermoplastic—Determination of tensile stress-strain properties GB/T 528-2009 Rubber,vulcanized or thermoplastic—Determination of tensile stress-strain properties GB/T 1232.1-2000 Rubber,unvulcanized—Determinations using a shearing-disc viscometer—Part 1:Determination of Mooney viscosity GB/T 1232.1-2016 Rubber,unvulcanized—Determinations using a shearing-disc viscometer—Part 1:Determination of Mooney viscosity GB/T 1232.3-2021 Rubber,unvulcanized—Determinations using a shearing-disc viscometer—Part 3:Determination of the Delta Mooney value for non-pigmented,oil-extended emulsion-polymerized SBR GB/T 1232.4-2017 Rubber,unvulcanized—Determinations using a shearing-disc viscometer—Part 4:Determination of the Mooney stress-relaxation rate GB/T 1233-1992 Rubber, unvulcanized—Determination of prevulcanization characteristics—Shearing disk method GB/T 1233-2008 Rubber,unvulcanized—Determinations of pre-vulcanization characteristic using a shearing disc viscometer GB/T 2941-2006 Rubber—General procedures for preparing and conditioning test pieces for physical test methods GB 5577-1985 Codification of types for synthetic rubbers GB/T 5577-2008 Codification of types for synthetic rubbers GB/T 5577-2022 Specification for the codification of synthetic rubber GB/T 6038-1993 Rubber test mixes—Preparation, mixing and vulcanization—Equipment and procedures GB/T 6038-2006 Rubber test mixes—Preparation,mixing and vulcanization—Equipment and procedures GB/T 2941-2025 Rubber—General procedures for preparing and conditioning test pieces for physical test methods GB/T 1232.2-2025 Rubber, unvulcanized—Determinations using a shearing-disc viscometer—Part 2:Determinations of pre-vulcanization characteristics