GB/T 3515-2005 (English Version) PDF

Standard No.: GB/T 3515-2005
Language: Chinese, Available in English version
Release Date: 2005
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 3515-2005
Replace: GB/T 3515-1983

Scope: This standard specifies the method for determining the content of carbon black in rubber by pyrolysis. This standard applies to vulcanized rubber and compounded rubber of the following polymers: - natural rubber or isoprene rubber; - butadiene rubber; - styrene-butadiene rubber; - butyl rubber; - acrylic rubber; - ethylene propylene rubber; - polyether; - derived polyvinyl compounds; - silicone rubber; - fluorosilicone rubber; - chlorosulfonated polyethylene (mass fraction of chlorine is less than 30%). However, it cannot be added with carbon-containing residues formed during pyrolysis, such as lead salts, cobalt salts, graphite, phenolic resins and other resins, pitch or cellulose. If it contains inorganic complexing agents such as alumina or calcium carbonate, it will cause decomposition, dehydration or the formation of volatile halides due to the presence of halogenated polymers at the pyrolysis temperature, so the accuracy of this method will be affected. This method is not applicable to chloroprene rubber, so it is not applicable to nitrile rubber with a mass fraction of acrylonitrile higher than 30%.

GB/T 3515-2005 Referenced Document

2005 GB/T 3515-2005 Rubber.Determination of carbon black content.Pyrolytic method
1983 GB/T 3515-1983 Vulcanized Rubber,vulcanized--Determination of carbon black content--Pyrolytic method