GB/T 40921-2021 English PDF

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GB/T 40921-2021: Expanded polypropylene (PP-E) beads
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 40921-2021	249	Add to Cart	3 days	Expanded polypropylene (PP-E) beads	Valid

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Basic data

Standard ID: GB/T 40921-2021 (GB/T40921-2021)
Description (Translated English): Expanded polypropylene (PP-E) beads
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G32
Word Count Estimation: 13,170
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 40921-2021: Expanded polypropylene (PP-E) beads

---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.
Expanded polypropylene (PP-E) beads ICS 83.100 CCSG32 National Standards of People's Republic of China Expanded polypropylene (PP-E) beads Released on 2021-11-26 2022-06-01 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. 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 National Light Industry Council. This document is under the jurisdiction of the National Plastic Products Standardization Technical Committee (SAC/TC48). This document was drafted by. Wuxi Huitong Lightweight Materials Co., Ltd., Beijing Technology and Business University, Jiangnan University, Nanjing Geli New Materials Co., Ltd. The company, Changzhou Huaao Plastic New Material Co., Ltd., East China University of Science and Technology, Beijing University of Chemical Technology, Zhejiang University, Sichuan University. The main drafters of this document. He Ruoxu, Zhu Min, Zhou Hongfu, Ni Zhongbin, Chen Mingqing, Zhu Jiadao, Yao Weiping, Zhao Ling, Liu Tao, He Yadong, Cao Kun, Liao Xia, Zeng Jia, Liu Wanwan, Wang Xiangdong, Ye Zhiyin. Expanded polypropylene (PP-E) beads

1 Scope

This document specifies the product classification, requirements, test methods, inspection rules, marking, packaging, transportation and Store. This document applies to polypropylene and its copolymers as the main raw material, adding a nucleating agent, and using a physical foaming agent to prepare a certain size And shaped foamed polypropylene beads.

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 2918-2018 Standard environment for condition adjustment and testing of plastic specimens GB/T 6343-2009 Determination of Apparent Density of Foam Plastic and Rubber GB 8410-2006 Combustion characteristics of automotive interior materials GB/T 8813-2020 Determination of the compressive properties of rigid foam GB/T 9345.1-2008 Determination of Ash in Plastics Part 1.General Method GB/T 13464-2008 Thermal analysis test method for material thermal stability GB/T 21389-2008 Vernier, band meter and digital caliper GB/T 31838.3-2019 Dielectric and resistance characteristics of solid insulating materials Part 3.Resistance characteristics (DC method) Surface electricity Resistance and surface resistivity HJ/T 400-2007 Sampling and determination method of volatile organic compounds and aldehydes and ketones in vehicles

3 Terms and definitions

There are no terms and definitions that need to be defined in this document.

4 categories

4.1 Category 4.1.1 According to the characteristics, it can be divided into two categories. general (T) and functional (G); functional types include antistatic (GK) and flame retardant (GZ). 4.1.2 According to the bulk density of the beads and the apparent density of the molded product (see Appendix A for the molding method), the sizes are divided into 8 basic specifications, see Table 1. 4.2 Product marking 4.2.1 Marking method Product Name-Category-Bead Bulk Density-Molded Product Apparent Density-Number of this document ......

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