GB/T 39933-2021 English PDFUS$259.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 39933-2021: Rotational moulding - Test method for low temperature impact Status: Valid
Basic dataStandard ID: GB/T 39933-2021 (GB/T39933-2021)Description (Translated English): Rotational moulding - Test method for low temperature impact Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: G31 Word Count Estimation: 14,115 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 39933-2021: Rotational moulding - Test method for low temperature impact---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.Rotational moulding - Test method for low temperature impact ICS 83.080.01 G31 National Standards of People's Republic of China Rotational molding low temperature impact test Released on 2021-03-09 2021-07-01 implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee Table of contentsForeword Ⅰ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Principle 2 5 Equipment 2 6 Sample 5 7 Test environment 6 8 Test procedure 6 9 Data processing 7 10 Precision 8 11 Test report 8 Appendix A (informative appendix) Test data table 10 Appendix B (informative appendix) Test data table example 11ForewordThis standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by the China National Light Industry Council. This standard is under the jurisdiction of the National Standardization Technical Committee for Plastic Products (SAC/TC48). Drafting organizations of this standard. Zhejiang Ruitang Plastic Technology Co., Ltd., Anhui Ningguo Tianyi Rotomolding Co., Ltd., Yantai Town Taihaili Fang Technology Co., Ltd., Dongguan Jingjian Automation Equipment Co., Ltd., Hebei Jinhoudun Plastic Co., Ltd., Beijing Low-Carbon Clean Energy Research Institute, China Petroleum & Chemical Corporation Zhenhai Refining and Chemical Company, National Chemical Building Materials Testing Center. The main drafters of this standard. Wen Yuan, Huang Ming, Chen Dongmei, Qiu Jiandao, Li Yanping, Sun Xiaojie, Lin Huajie, Zhang Wei, Guo Deyu, Song Hongsuo, Zhang Hongsong, Yang Laiqin, Shi Chuncai. Rotational molding low temperature impact test1 ScopeThis standard specifies two methods for the low-temperature impact test of rotational molding. the passing method (A method) and the gradient method (B method). This standard applies to the low-temperature impact performance of rotationally molded semi-rigid plastic products or rigid plastic products at -40°C. Other temperature The impact performance below can refer to this standard, and the low temperature impact performance of rotomolding materials can refer to this standard. This standard does not apply to rotomolding products with a thickness of less than 3.0mm.2 Normative referencesThe following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated reference documents, the latest version (including all amendments) is applicable to this document. GB/T 2035-2008 Plastic Terms and Definitions GB/T 2918 Standard environment for condition adjustment and testing of plastic samples GB/T 10589 Technical conditions of low temperature test chamber GB/T 11997-2008 Plastic multi-purpose sample GB/T 14123 Mechanical impact testing machine performance characteristics3 Terms and definitionsThe following terms and definitions defined in GB/T 2035-2008 apply to this document. 3.1 Rotational moulding Rotational molding Rotomolding Spin molding Put the resin molding material into the mold, heat the mold and make it rotate continuously at a low speed, the resin in the mold gradually under the action of gravity and heat Gradually coated and adhered to the inner surface of the mold to form the required shape, and then cooled to obtain a processing method for plastic products. Note. Rewrite GB/T 2035-2008, definition 2.873. 3.2 Ductile failure After the test, the sample forms a through crack, gap or hole, and the sample around the crack, gap or hole is stretched. 3.3 Brittle failure After the test, the sample is broken, split into more than two pieces, or formed through cracks, gaps or holes, and the cracks, gaps or holes are tested around the There is no stretching phenomenon. 3.4 Unbroken nofailure After the test, the sample is intact, or only cracks and gaps that do not penetrate the sample are formed. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 39933-2021_English be delivered?Answer: Upon your order, we will start to translate GB/T 39933-2021_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 39933-2021_English with my colleagues?Answer: Yes. 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