GB/T 3780.21-2025 Active National standards

GB/T 3780.21-2025 Carbon black—Part 21:Determination of sieve residue—Water washing method

Publish Date: 2025-08-01 Implement Date: 2026-02-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 3780.21-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Carbon black

ICS Name: Rubber synthetic ingredients

Publish Date: 2025-08-01

Implement Date: 2026-02-01

Publisher: 国家市场监督管理总局、国家标准化管理委员会

Technical Committee: 全国橡胶与橡胶制品标准化技术委员会(SAC/TC 35)

Pages: 16 pages

Scope

本文件描述了用水冲洗法测定未处理过的炭黑及橡胶制品用粉剂筛余物的方法。
本文件适用于炭黑、橡胶制品用粉剂等筛余物的测定，不适用于经油处理过的炭黑及粉剂筛余物的测定。

Development Information

Drafting Units:

中昊黑元化工研究设计院有限公司、四川轻化工大学、安徽佳通乘用子午线轮胎有限公司、曲靖众一精细化工股份有限公司、金能科技股份有限公司、山西安仑化工有限公司、山西盛达威科技有限公司

Drafting Persons:

孙莉萍、刘健、林毅、刘朗、胡小丽、张慧、薛亚磊、胡春雷

Word Count: 19 Thousand words Pages: 16 pages

Same series standard

GB/T 3780.7-2025 Carbon black—Part 7:Determination of pH value GB/T 3780.31-2025 Carbon black—Part 31:Determination of total hydrogen content

Replace the following standards

GB/T 3780.21-2016 Carbon black—Part 21:Determination of sieve residue—Water washing method GB/T 3781.5-2019 Acetylene black—Part 5:Determination of grit content

Referenced Standards

GB 3778-1994 Carbon black for use in rubber industry GB 3778-2003 Carbon black for use in rubber products GB/T 3778-2011 Carbon black for use in rubber products GB/T 3778-2021 Carbon black for use in rubber products GB/T 3782-1993 Acetylene black—Specification limits GB/T 3782-2006 Acetylene black GB/T 3782-2016 Acetylene black GB/T 6003.1-1997 Test sieves of metal wire cloth GB/T 6003.1-2012 Test sieves—Technical requirements and testing—Part 1:Test sieves of metal wire cloth GB/T 6003.1-2022 Test sieves—Technical requirements and testing—Part 1:Test sieves of metal wire cloth GB/T 7044-1993 Colour black—Specification GB/T 7044-2003 Colour carbon black GB/T 7044-2013 Colour carbon black GB/T 7044-2022 Colour carbon black GB/T 8170-1987 Rules for rounding off of numberical values GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values

Adopt standards

ISO 1437:2017

Related Standards

GB/T 11409.4-1989 Replaced

GB/T 11409.4-1989 Test method of weight loss on heating for rubber antiagers and vulcanizing accelerators

Publish Date: 1989-03-31

GB/T 11409.5-1989 Replaced

GB/T 11409.5-1989 Test method of residue on sieve for rubber antiagers and vulcanizing accelerators

Publish Date: 1989-03-31

GB/T 11409.7-1989 Replaced

GB/T 11409.7-1989 Test method of ash for rubber antiagers and vulcanizing accelerators

Publish Date: 1989-03-31

GB/T 11409.8-1989 Replaced

GB/T 11409.8-1989 Test method of viscosity for rubber antiagers and vulcanizing accelerators—Rotational viscometer method

Publish Date: 1989-03-31

GB/T 12827-1991 Replaced

GB/T 12827-1991 Standard reference acetylene black and standard practice for evaluation

Publish Date: 1991-04-23

GB/T 13021-1991 Replaced

GB/T 13021-1991 Determination for the carbon black content of polyethylene pipes and fittings by calcination and pyrolysis

Publish Date: 1991-07-03