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GB/T 9994-2018Conventional moisture regains of textile materials (English PDF)

纺织材料公定回潮率

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

March 15, 2018

Implementation date

October 1, 2018

Scope

GB/T 9994-2018 is the English-translated version of 纺织材料公定回潮率.

GB/T 9994-2018 sets the conventional moisture regains of the main textile materials, the agreed values used to calculate the mass of textile materials, the linear density of yarns, the mass per unit area of fabrics and the fibre content in the quantitative analysis of multi-component products.

It defines textile materials, moisture regain, conventional moisture regain, moisture regain in the standard atmosphere and conventional mass, and lists the values in a table.

This edition revises the values for cotton fabrics, wool woven fabrics and modal, lyocell and aramid fibres, adds chitosan, polytrimethylene terephthalate, polybutylene terephthalate, ultra-high molecular weight polyethylene, polyolefin elastomer, polyphenylene sulfide, polyimide and carbon fibres, and drops fluorocarbon fibre.

Moisture content itself is determined by the oven-drying method of GB/T 9995. It replaces GB/T 9994-2008, was issued on 15 March 2018 and has applied since 1 October 2018.

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Document preview — GB/T 9994-2018

National Standard of the People's Republic of China

ICS
59.080.01
Classification
W 04
Replacing
GB/T 9994-2008

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Contents

  • Foreword
  • 1 Scope
  • 2 Normative references
  • 3 Terms and definitions
  • 4 The official moisture regain of textile materials

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This standard replaces GB/T 9994-2008 "Public moisture regain of textile materials." Major technical changes compared to GB/T 9994-2008 as follows.

--- Change "blend product" to "multi-component product" and delete the note in the scope;

--- Revised the fixed moisture regain of cotton fabrics, wool woven fabrics, modal fibers, lyocell fibers and aramid fibers;

--- Increased chitosan fiber, polytrimethylene terephthalate fiber, polybutylene terephthalate fiber, ultra high molecular weight polyethylene Specific moisture regain of fibers, polyolefin elastomer fibers, polyphenylene sulfide fibers, polyimide fibers, and carbon fibers;

--- Removed fluorocarbon fiber and its official moisture regain.

1 Scope

This standard specifies the official moisture regain of major textile materials.

This standard is applicable to textile materials and can be used to calculate the mass of textile materials, the linear density of yarns, and the mass per unit area of fabrics. And fiber content in quantitative analysis of multi-component products.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest version (including all amendments) applies to this document.

GB/T 4146.1 Chemical fiber for textiles - Part 1: Generic name

GB/T 9995 Determination of moisture content and moisture regain of textile materials by oven drying

GB/T 11951 Textile Natural Fiber Terminology

3 Terms and definitions

The following terms and definitions as defined in GB/T 4146.1 and GB/T 11951 apply to this document.

3.1 Textile materials

The collective name for textile raw materials, semi-finished textile products and finished products used to make textiles.

Note: Including all kinds of fibers, slivers, yarns, fabrics, etc.

3.2 Moisture regain

The dry mass percentage of the measured material in the textile material measured by the prescribed method.

3.3 Conventional moisture regain

The agreed value of the moisture regain of textile materials.

3.4 Moisture regain in the standard atmosphere

After the textile material is pre-humidified, the moisture regain in the standard atmosphere reaches moisture balance.

3.5 Conventional mass

The quality of the textile material after drying is added to the quality of the material corresponding to the quality of the fixed moisture regain.

4 The official moisture regain of textile materials

The official moisture regain of textile materials is shown in Table 1.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Cited by

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Editions of GB/T 9994

EditionTitleRevisionStatus
GB/T 9994-2018Conventional moisture regains of textile materialscurrent editionCurrent
GB/T 9994-2008Conventional moisture regains of textile materialsprevious editionSuperseded

This page sells the current edition, GB/T 9994-2018. Earlier editions are listed for reference only.

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