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GB/T 40872-2021 English PDF

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GB/T 40872-2021: Plastics - Test methods of polyethylene cellular
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Basic data

Standard ID GB/T 40872-2021 (GB/T40872-2021)
Description (Translated English) Plastics - Test methods of polyethylene cellular
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard G31
Word Count Estimation 16,155
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 40872-2021: Plastics - Test methods of polyethylene cellular

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Plastics - Test methods of polyethylene cellular ICS 83.100 CCSG31 National Standards of People's Republic of China Test method for plastic polyethylene foam (ISO 7214.2012, Celularplastics-Polyethylene-Methodsoftest, MOD) Released on 2021-10-11 2022-05-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. This document uses the redrafting method to modify and adopt ISO 7214.2012 "Test Method for Foamed Plastic Polyethylene". Compared with ISO 7214.2012, this document has more structural adjustments. Appendix A lists this document and ISO 7214.2012. The chapter number comparison list. Compared with ISO 7214.2012, this document has technical differences. The set vertical single line (|) is marked, and a list of the corresponding technical differences and their reasons is given in Appendix B. The following editorial changes have been made to this document. ---The standard name is changed to "Plastic Polyethylene Foam Test Method". Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents. This document was proposed by the China Petroleum and Chemical Industry Federation. This document is under the jurisdiction of the National Plastics Standardization Technical Committee (SAC/TC15). This document was drafted by. Hubei Xiangyuan New Material Technology Co., Ltd., Guangde Xiangyuan New Material Technology Co., Ltd., Fujian Sansheng Industrial Co., Ltd. Co., Ltd., Guangdong Tianan New Materials Co., Ltd., Hubei University, Hubei University of Science and Technology, Liaocheng University, Dongguan Hebiao Technology Co., Ltd., Hubei Institute of Standardization and Quality, Shanghai Jianke Inspection Co., Ltd., Shanghai Pu Gong Inspection Technology Co., Ltd., China Building Materials Inspection Certification Group Co., Ltd., China Blue Chenguang Chengdu Testing Technology Co., Ltd. The main drafters of this document. Wei Qiong, Duan Jianping, Hu Zhifei, Song Daiying, Hao Tonghui, Li Yuesheng, Teng Mouyong, Qu Xinghe, Yang Jian, Pan Xiaoying, Ma Youjin, Liu Yingzhuo, Liu Lirong, Zheng Sunxing, Zhang Qunchao, Sun Shaofa. Test method for plastic polyethylene foam

1 Scope

This document describes the test methods for flexible and semi-rigid foams made of polyethylene. This document applies to polyethylene foam materials.

2 Normative references

The content of the following documents constitutes an indispensable clause of this document through normative references in the text. Among them, dated quotations Only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to This document. GB/T 531.1 Test method for indentation hardness of vulcanized rubber or thermoplastic rubber Part 1.Shore durometer method (Shore hardness) (GB/T 531.1-2008, ISO 7619.2004, IDT) GB/T 6342 Determination of linear dimensions of foam plastics and rubber (GB/T 6342-1996, idtISO 1923.1981) GB/T 6343 Determination of apparent density of foamed plastics and rubber (GB/T 6343-2009, ISO 845..2006, IDT) GB/T 6344 Determination of tensile strength and elongation at break of flexible foam polymer materials (GB/T 6344-2008, ISO 1798. 2008, IDT) GB/T 6669 Determination of Compression Set of Flexible Foam Polymeric Materials (GB/T 6669-2008, ISO 1856.2000, IDT) GB/T 8332 Test method for the combustion performance of foam plastics Horizontal combustion method (GB/T 8332-2008, ISO 9772.2001, IDT) GB/T 8810 Determination of Water Absorption of Rigid Foam Plastics (GB/T 8810-2005, ISO 2896.2001, MOD) GB/T 8811 Rigid foam plastic dimensional stability test method (GB/T 8811-2008, ISO 2796.1986, IDT) GB/T 10294 Determination of steady-state thermal resistance and related characteristics of thermal insulation materials Protective hot plate method (GB/T 10294-2008, ISO 8302.1991, IDT) GB/T 10295 Determination of steady-state thermal resistance and related characteristics of thermal insulation materials by calorimeter method (GB/T 10295-2008, ISO 8301. 1991, IDT) GB/T 15048-1994 Rigid foam plastic compression creep test method (idtISO 7850.1986) GB/T 18942.1 Determination of compressive stress-strain characteristics of polymer porous elastic materials Part 1.Low-density materials (GB/T 18942.1-2003, ISO 3386-1.1986, IDT) GB/T 18943 Determination of dynamic cushioning properties of porous rubber and plastics (GB/T 18943-2008, ISO 4651.1988, IDT) GB/T 21332 Determination of water vapor transmission performance of rigid foam (GB/T 21332-2008, ISO 1663.1999, IDT)

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Skin The untreated surface layer after the foam is manufactured.

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