GB/T 45709-2025 Active National standards

GB/T 45709-2025 Determination of absolute molecular mass and molecular mass distribution of polyethylene terephthalate fibre and chip—Advanced polymer chromatography-multi angle laser light scattering (APC-MALLS)

GB/T 45709-2025 Determination of absolute molecular mass and molecular mass distribution of polyethylene terephthalate fibre and chip—Advanced polymer chromatography-multi angle laser light scattering (APC-MALLS)

Publish Date: 2025-05-30 Implement Date: 2025-12-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 45709-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Chemical fibers

ICS Name: Artificial fibers

Publish Date: 2025-05-30

Implement Date: 2025-12-01

Pages: 12 pages

Scope

This document describes a method for determining the absolute molecular weight and distribution of polyethylene terephthalate (PET) using high-performance polymer chromatography combined with multi-angle laser light scattering.
This document is applicable to polyethylene terephthalate fibers and slices, and other PET products can be referenced for implementation.

Development Information

Word Count: 13 Thousand words Pages: 12 pages

Referenced Standards

GB/T 4146-1984 Textile terms and terminology (Parts of chemical fibers) GB/T 4146.1-2009 Textiles—Man-made fibres—Part 1:Generic names GB/T 4146.1-2020 Textiles—Man-made fibres—Part 1:Generic names GB/T 4146.2-2017 Textiles—Man-made fibers—Part 2:Terms of products GB/T 4146.3-2011 Textiles—Man-made fibers—Part 3:Terms of inspection

Related Standards

GB/T 4146-1984 Replaced

GB/T 4146-1984 Textile terms and terminology (Parts of chemical fibers)

Publish Date: 1984-02-22

GB/T 6509-1986 Replaced

GB/T 6509-1986 Method for determination of low molecular weight compounds content in polyamide 6

Publish Date: 1986-06-18

GB/T 9997-1988 Replaced

GB/T 9997-1988 Man-made fibres—Determination of breaking strength and elongation of individual fibres

Publish Date: 1988-12-10

GB/T 14334-1993 Replaced

GB/T 14334-1993 Sampling method of synthetic staple fibres

Publish Date: 1993-04-20

GB/T 14335-1993 Replaced

GB/T 14335-1993 Testing method for linear density of synthetic staple fibres

Publish Date: 1993-04-20

GB/T 14336-1993 Replaced

GB/T 14336-1993 Testing method for length of synthetic staple fibres

Publish Date: 1993-04-20