GB/T 21655.1-2023Textiles - Evaluation of absorption and quick-drying - Part 1: Method for combination tests (English PDF)

Foreword

This document was drafted in accordance with the rules given in GB/T 1.1-2020 "Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents".

This document is Part 1 of GB/T 21655 "Textiles - Evaluation of absorption and quickdrying". The following parts of GB/T 21655 have been issued:

- Part 1: Method for combination tests;

- Part 2: Method for moisture management tests.

This document replaces GB/T 21655.1-2008 "Textiles - Evaluation of absorption and quick-drying - Part 1: Method for combination tests". Compared with GB/T 21655.1- 2008, in addition to the structural adjustments and editorial changes, the main technical changes in this document are as follows:

- Change "evaporation rate" to "drying rate" and change the definition (see 3.3 of

- Delete the term and definition of "evaporation time" (see 3.4 of Edition 2008);

- Change the principle (see Chapter 4 of this Edition, Chapter 4 of Edition 2008);

- Delete "capillary effect test device" (see 5.5 of Edition 2008). Change "burette" to "micropipette" (see 5.2 of this Edition, 5.3 of Edition 2008). Change "test platform" to "specimen holder" (see 5.6 of this Edition, 5.2 of Edition 2008). Add "dropper" (see 5.7 of this Edition);

- Add the requirements for the standard atmospheric wind speed for the test (see 6.2 of this Edition);

- Change the requirements for sample washing and drying procedures (see 7.2 of this drying rate. Add the sampling requirements (see 8.1.1, 8.2.1, 8.3.1 of this Edition, 8.1.1, 8.2.1, 8.3.1 of Edition 2008);

- Change the test method for drip diffusion time (see 8.2 of this Edition, 8.2 of

- Change the test method for drying rate (see 8.3 of this Edition, see 8.3 of Edition

- Delete the test of drying time (see 8.3.5 of Edition 2008);

- Delete the moisture permeability (see 8.5 of Edition 2008);

quick-drying performance. Add the requirements for marks (see Chapter 9 of this Edition, Chapter 9 of Edition 2008).

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The issuing authority shall not be held responsible for identifying any or all such patent rights.

This document was proposed by China Textile Industry Federation.

This document shall be under the jurisdiction of National Technical Committee on Textiles of Standardization Administration of China (SAC/TC 209).

The drafting organizations of this document: China Textile Standard Inspection and Certification Co., Ltd., Yueyue Home Textile Co., Ltd., Anta (China) Co., Ltd., Nike Sports (China) Co., Ltd., Ningbo Peacebird Fashion Men's Wear Co., Ltd., Jiangsu Carnation Textile Technology Co., Ltd., Toray Fiber Research Institute (China) ) Co., Ltd., Guozhen Health Technology (Beijing) Co., Ltd., Zhejiang Zhongfangbiao Inspection Co., Ltd., Zhejiang Manzi Socks Co., Ltd., Dajiali (Taicang) Quality Technology Testing Center Co., Ltd., Dongguan Chaoying Textile Co., Ltd., Nantong Yitianshi Textile Co., Ltd., Shanghai Little Blue Elephant Clothing Co., Ltd., Shenzhen Ruifeng Instrument Co., Ltd., Huizhou University, Shanghai Mercury Home Textile Co., Ltd., Huamao (Xiamen) Special Materials Co., Ltd., Zhejiang Yuejia Textile Technology Co., Ltd., Single Guide Technology Development (Guangdong) Co., Ltd., Jiangsu Xinzhanjiang Fiber Technology Co., Ltd., Wuhan Maoren Yunshang Technology Co., Ltd.

Main drafters of this document: Ren Hening, Zhang Tianxiang, Zhang Hui, Zheng Yuanyuan, Huang Cong, Wang Baojun, Tan Wanchang, Gao Zhifang, Gu Meihua, Li Qiang, Feng Qianqian, Li Aimin, Hu Junyan, Fu Ziqin, Zhu Xiaoli, Li Weiwei, Wang Yefei, Zhang Ying, Wu Zhongping, Zhu Xiaohui, Zhang Kang, Wu Banjin, Liu Huilin, Zhong Chulong, Wu Ningxi, Li Bing, Zhang Shunying.

Versions of standard substituted by this document are:

- This is the first revision.

Introduction

For the evaluation of textile moisture absorption and quick-drying, there are mainly single-item combination test method and dynamic moisture transfer method, etc. For the convenience of use, it is divided into several parts according to different test principles and methods. GB/T 21655 "Textiles - Evaluation of absorption and quickdrying" is proposed to be composed of the following two parts.

- Part 1: Method for combination tests. The purpose is to provide a method for comprehensively evaluating the moisture absorption and quick-drying properties of textiles by measuring individual tests such as water absorption rate and drying rate.

- Part 2: Method for moisture management tests. The purpose is to provide a method for evaluating the moisture absorption and quick-drying and moisture absorption and perspiration properties of textiles by measuring the dynamic transfer state of liquid water after the test liquid is dropped into the specimen, and obtaining a series of performance indicators.

1 Scope

This document describes the test method for the single test indicator combination of the moisture absorption and quick-drying performance of textiles. It also gives the evaluation indicators.

This document applies to all types of textile products.

2 Normative references

The following referenced documents are indispensable for the application 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 6682, Water for analytical laboratory use -- Specification and test methods GB/T 8629-2017, Textiles -- Domestic washing and drying procedures for textile testing FZ/T 01071, Textiles -- Test method for capillary effect

3 Terms and definitions

4 Principle

Measure the water absorption rate, drip diffusion time, drying rate and wicking height of the fabric under specified conditions to simulate the process of water absorption, diffusion and drying in the fabric, so as to comprehensively characterize the moisture absorption and quick-drying performance of the fabric.

5 Equipment, materials and reagents

6 Standard atmosphere for humidity control and testing

7 Sampling and specimen preparation

7.1 The method and quantity of sample collection shall be carried out according to the product standard or agreed upon by the parties concerned. For fabric samples, cut a fullwidth fabric of more than 0.5 m for each sample. When sampling, avoid the end of the pipe for more than 2 m. For products, take at least one unit.

7.2 Cut each sample into two pieces. One of them is used for pre-wash test and the other is used for post-wash test. The washing method is according to 4N program of type A standard washing machine in GB/T 8629-2017. Conduct continuous washing 5 times. Use standard detergent 3. Dry naturally after washing. It can also be washed according to the number of washings agreed by the parties concerned, but the number of washings shall be at least 5 times.

7.3 Cut the specimen. The number and size of the test specimens shall meet the requirements in Chapter 8. For fabric samples, when cutting samples, they shall be evenly arranged in the area above 150 mm from the edge of the selvage. Each specimen shall not be in the same warp (longitudinal) and weft (horizontal) position. For finished products, specimens shall be selected from the main functional fabrics. Sampling shall avoid defects and wrinkles that affect the test results.

8 Test procedures

9 Evaluation and marks