GB/T 12832-2008 Active National standards

GB/T 12832-2008 Rubber—Determination of crystallization effects by hardness measurements

Publish Date: 2008-04-01 Implement Date: 2008-09-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 12832-2008

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Rubber products and their auxiliary materials

ICS Name: Rubber

Publish Date: 2008-04-01

Implement Date: 2008-09-01

Pages: 7 pages

Scope

This standard specifies the use of hardness measurement methods to determine the effect of rubber gradually hardening over time due to crystallization. It is limited to materials with an initial hardness of 10 IRHD to 85 IRHD at the test temperature. This standard is applicable to the determination of raw rubber, uncured (mixed) rubber, and vulcanized rubber. It is mainly suitable for rubbers with obvious crystallization tendencies at low temperatures, such as chloroprene rubber and natural rubber. This standard is not applicable to rapidly crystallizing materials that reach a relatively high degree of crystallinity within 15 minutes at the test temperature.