GB/T 33728-2017 English PDF (GB/T33728-2017)

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GB/T 33728-2017: Textiles -- Evaluation for electrostatic properties -- Method of static decay
GB/T 33728-2017
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 59.080.30
W 04
Textiles – Evaluation for Electrostatic
Properties – Method of Static Decay
ISSUED ON. MAY 12, 2017
IMPLEMENTED ON. DECEMBER 1, 2017
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of PRC.
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Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Terms and Definitions ... 4
4 Principle ... 4
5 Apparatus ... 5
6 Test Conditions ... 6
7 Specimen Preparation ... 6
8 Test Procedures ... 6
9 Result Expression ... 7
10 Evaluation ... 7
11 Test Report ... 7
Foreword
This Standard was drafted as per the rules specified in GB/T 1.1-2009.
This Standard was proposed by China National Textile and Apparel Council.
This Standard shall be under the jurisdiction of National Technical Committee for
Standardization of Textiles (SAC/TC 209).
Drafting organizations of this Standard. Shanghai Hi-Clean Static Test Technology
Center, CTTC (Beijing) Inspection and Certification Center Co., Ltd., Shanghai Chenlong
Static Technology Co., Ltd. Shandong RUYI Technology Group Co., Ltd., and Ningbo
Textile Equipment Factory.
Chief drafting staffs of this Standard. Ren Shengxin, Han Yuru, Huang Jianhua, Xu
Ming, Wang Baojun, Wei Xiaobo, Huang Wei, Yang Jingwen, Du Yuanshu, Zhao Hui,
Hu Junwei, and Zhu Yafen.
Textiles – Evaluation for Electrostatic
Properties – Method of Static Decay
1 Scope
This Standard specifies the test method and evaluation of static decay time of textiles.
This Standard is applicable to various types of textiles. Other membrane materials can
be used for reference.
2 Normative References
The following documents are essential to the application of this document. For the
dated documents, only the versions with the dates indicated are applicable to this
document; for the undated documents, only the latest version (including all the
amendments) are applicable to this document.
GB/T 8629-2001 Textiles – Domestic Washing and Drying Procedures for Textile
Testing
3 Terms and Definitions
The following terms and definitions are applicable to this document.
3.1 Static decay time
The time required for the voltage of charged sample to decay to the given percentage
of its starting value.
4 Principle
After the sample is charged to 5000V, turn off the power; the voltage on the sample is
attenuated by earthing, then determine the time required by its voltage decaying to
500V.