GB/T 39822-2021 Active National standards

GB/T 39822-2021 Plastics—Determination of yellowness index and change in yellowness index

Publish Date: 2021-03-09 Implement Date: 2021-10-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 39822-2021

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Basic standards and general methods for synthetic resins and plastics

ICS Name: Plastic Composite

Publish Date: 2021-03-09

Implement Date: 2021-10-01

Pages: 11 pages

Scope

This standard specifies the method for determining the yellow index and its change value of transparent or opaque plastics.
This standard is applicable to the determination of the yellow index and its change value of plastic materials.
Note 1: The shapes of the samples include molded boards or discs, films, sheets, powders, and particles. It is not applicable to plastics containing fluorescent agents.
Note 2: The change value of the yellow index is often used to evaluate the impact of the environment on color stability, such as high temperature and ultraviolet radiation.