GB/T 38173-2019Polytetrafluoroethylene staple fibre (English PDF)
聚四氟乙烯短纤维
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
October 18, 2019
Implementation date
May 1, 2020
Scope
GB/T 38173-2019 is the English-translated version of 聚四氟乙烯短纤维.
GB/T 38173-2019 is the Chinese standard "Polytetrafluoroethylene staple fibre". Its scope clause reads: This standard specifies the terms and definitions of Teflon staple fibers, product identification, technical requirements, test methods, inspection rules and signs, Packaging, transportation and storage requirements.
This standard applies to polytetrafluoroethylene staple fibers with a micronaire value of 3.0 to 7.0. Its clauses include terms and definitions; product identification.
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Document preview — GB/T 38173-2019
National Standard of the People's Republic of China
- ICS
- 59.060.20
- Classification
- W 52
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Product identification
1 Scope
This standard specifies the terms and definitions of Teflon staple fibers, product identification, technical requirements, test methods, inspection rules and signs,
Packaging, transportation and storage requirements.
This standard applies to polytetrafluoroethylene staple fibers with a micronaire value of 3.0 to 7.0.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
Textiles and textiles - Performance and test terms - Part 1. Fibers and yarns
GB/T 3291.3 Textiles and textile materials - Performance and test terms - Part 3. General
GB/T 4146 (all parts) textile chemical fiber
GB/T 6498-2008 cotton fiber micronaire test method
GB/T 6505-2017 Chemical fiber filament heat shrinkage test method (after treatment)
GB/T 8170-2008 Numerical rounding rules and the representation and determination of limit values
GB/T 14334-2006 chemical fiber short fiber sampling method
GB/T 14344 Test method for tensile properties of chemical fiber filaments
GB/T 35748-2017 PTFE filament
3 Terms and definitions
GB/T 3291.1, GB/T 3291.3, GB/T 4146 (all parts), GB/T 6498-2008 and the following terms and conditions
The meaning applies to this document. For ease of use, some of the terms and definitions in GB/T 6498-2008 are repeated below.
3.1
Short fibers of interconnected network structures made from polytetrafluoroethylene resin.
3.2 Micronaire value
A measure of the gas permeability of a certain cotton fiber under specified conditions, expressed as a micronaire scale. The micronaire ruler is based on international agreements.
Set a series of cotton micronaire values and calibrate.
[GB/T 6498-2008, definition 3.1]
4 Product identification
4.1
Product specifications are expressed in terms of fiber cut length.
4.2
The product identification shall contain information such as specifications, product names or batch numbers, which can be effectively distinguished.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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