GB/T 41553-2022 Bamboo fiber
1 Scope
This document provides the classification and codes of bamboo fibers, specifies their technical requirements, and describes the corresponding test methods, inspection rules, as well as packaging, marking, transportation, and storage.
This document is applicable to natural fibers processed from bamboo as the raw material.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 2677.8 Fibrous raw material - Determination of acid-insoluble lignin
GB/T 2677.10 Fibrous raw material - Determination of holocellulose
GB/T 2828.1 Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
GB/T 3291.1 Textiles -Terms of textiles material properties and test - Part 1: Fibre and yarn
GB/T 5707 Textiles - Bast fibres textile products - Terminology
GB/T 5889 Method of quantitative analysis of ramle chemical components
GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values
GB/T 9994 Conventional moisture regains of textile materials
GB/T 9995 Determination of moisture content and moisture regain of textile - Oven-drying method
GB/T 10685 Wool - Determination of fiber diameter - Projection microscope method
GB/T 17644 Test method for whiteness and chromaticity of textile fibres
GB/T 18147.2 Test method for hemp fibre - Part 2: Test method for residual gum content of hemp fibre
GB/T 18147.3 Test method for hemp fiber - Part 3: Test method for length of hemp fiber
GB/T 18147.4 Test method for hemp fiber - Part 4: Test method for fineness of hemp fiber
GB/T 35378-2017 Testing methods for tensile mechanical properties of plant short individual fibers
GB/T 36394 Terminology of bamboo products
NY/T 2635 Test method for breaking tenacity of ramie fiber
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 3291.1, GB/T 5707, GB/T 36394 and GB/T 9994 as well as the following apply.
3.1
bamboo fiber
bundle-form, filamentous, or fluffy units derived from bamboo through chemical or mechanical processing, comprising individual fiber cells and aggregates of multiple fiber cells
3.2
bamboo fibers for textiles
bundle-form bamboo fibers, which are separated from bamboo with a typical length exceeding 30mm and are suitable for textile processing while retaining the natural characteristics of bamboo
3.3
bamboo fibers for non-textiles
bundle-form bamboo fibers separated from bamboo, which are unsuitable for textile processing but retain the natural characteristics of bamboo
Note: Primarily used for composite materials.
3.4
moisture regain
amount of water present in a material, as determined under specified conditions
Note: Expressed as the percentage of the difference between the mass of the specimen before drying and the mass after drying, relative to the mass after drying.
3.5
conventional moisture regain
agreed-upon or specified value representing the moisture regain of a material
3.6
residual gum content
percentage ratio of the dry weight of residual gum substances remaining in the fibers to the dry weight of the fibers themselves
3.7
breaking force
force applied to stretch a fiber until it breaks under specified conditions
3.8
breaking strength
ratio of the breaking force of a fiber to its linear density
3.9
sticky fiber
bamboo fibers that are notably coarse and stiff, with a linear density exceeding that of regular bamboo fibers by more than 100%
3.10
nep
granular defects formed by the twisting and knotting of short, fine bamboo fibers
Foreword I
1 Scope
2 Normative references
3 Terms and definitions
4 Classification and code
5 Requirements
6 Test methods
7 Inspection rules
8 Packaging, marking, transportation, and storage
