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Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 44749.2-2024: Adhesives - Test methods for the evaluation and selection of adhesives for indoor wood products - Part 2: Resistance to delamination in severe environments Status: Valid
Basic dataStandard ID: GB/T 44749.2-2024 (GB/T44749.2-2024)Description (Translated English): Adhesives - Test methods for the evaluation and selection of adhesives for indoor wood products - Part 2: Resistance to delamination in severe environments Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: G38 Classification of International Standard: 83.180 Word Count Estimation: 12,138 Date of Issue: 2024-10-26 Date of Implementation: 2025-05-01 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 44749.2-2024: Adhesives - Test methods for the evaluation and selection of adhesives for indoor wood products - Part 2: Resistance to delamination in severe environments---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT44749.2-2024 ICS 83.180 CCSG38 National Standard of the People's Republic of China Adhesives Evaluation and Application of Adhesives for Interior Wood Products Selected test methods Part 2.Tests in harsh environments Delamination resistance (ISO 26842-2.2020,MOD) Released on October 26, 2024 Implementation on May 1, 2025 State Administration for Market Regulation The National Standardization Administration issued PrefaceThis document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting. This document is Part 2 of GB/T 44749 Adhesives - Test methods for evaluation and selection of adhesives for interior wood products. GB/T 44749 has published the following parts. --- Part 1.Resistance to delamination in non-harsh environments; --- Part 2.Resistance to delamination in harsh environments. This document is modified to adopt ISO 26842-2.2020 "Adhesives for interior wood products - Evaluation and selection of test methods - Part 2 Points. Resistance to delamination in harsh environments. Compared with ISO 26842-2.2020, this document has many structural adjustments. See Appendix A for the table. This document has many technical differences compared to ISO 26842-2.2020. A list of these technical differences and their reasons is given in Appendix B. The following editorial changes have been made to this document. --- Moved the evaluation part of the principle to the result calculation and evaluation part, and modified the description of the principle according to Chinese conventions; --- Change the equipment names in test equipment and tools to commonly used domestic names. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by the China Petroleum and Chemical Industry Federation. This document is under the jurisdiction of the National Technical Committee for Standardization of Adhesives (SAC/TC185). This document was drafted by. Shanghai Rubber Products Research Institute Co., Ltd., Shanghai Jianke Inspection Co., Ltd., Fuzhou Rongjian Engineering Inspection Co., Ltd. Company, Xiamen Baianxing New Materials Co., Ltd., Shenzhen Beice Testing Technology Co., Ltd., Guangdong Yutian Bali Technology Co., Ltd., Guangdong Baiyun Technology Co., Ltd., Asahikawa Chemical (Suzhou) Co., Ltd., Shenzhen Furniture Research and Development Institute, Welltone Technology Co., Ltd., Wuhan Han Shuangbang New Materials Co., Ltd. The main drafters of this document are. Shen Yan, Miao Ce, Hu Xiaozhen, Zhang Chongmiao, Gan Yongqiang, Xu Yanhua, Liao Wuming, Lin Huayu, Qiu Weijun, Huang Lei, Zhang Yaling, Xue Runze, Wu Kang, Zhou Yehua, Wang Fangxian, and You Renguo.introductionWith the change of wood raw material structure, the supply of wood products in my country has shifted from traditional solid wood to glued wood materials. It is mainly used in the wood product manufacturing industry to connect and fix various parts. Different types of wood product adhesives can meet To meet the requirements of different materials and processes, ensure the stability and aesthetics of furniture. In order to standardize the quality of adhesive products and guide the healthy and effective development of the product market With the development of the industry, my country has gradually established a relatively complete adhesive standard system. The "Standard Method" is an important part of the adhesive standard system, which aims to evaluate the anti-delamination performance of adhesives used for wood products under different environmental conditions. The price is to be composed of the following two parts. --- Part 1.Anti-delamination in non-harsh environments. The purpose is to specify the adhesives for wood products used in non-harsh environments. Test method for resistance to delamination of adhesives. --- Part 2.Resistance to delamination in harsh environments. The purpose is to specify the resistance of adhesives for wood products used in harsh environments. A layered testing approach. This document applies to high-durability products for indoor use (such as chair legs, fixtures, musical instruments) and semi-outdoor use (such as those exposed to windows). The window frame and floor in the sunlight nearby) provide a reliable basis for selecting and evaluating the anti-delamination property of adhesives for wood products, which is helpful to eliminate technical Trade barriers, better promote trade, exchanges and technological cooperation, and promote industry development. Adhesives Evaluation and Application of Adhesives for Interior Wood Products Selected test methods Part 2.Tests in harsh environments Delamination resistance1 ScopeThis document describes the test method for the delamination resistance of adhesives used on wood products intended for use in harsh environments. This document provides a guide to the selection of agent/wood combinations where the product is exposed to extreme changes in temperature and humidity. Cyclic tests at different temperatures and humidity levels to verify whether the selected adhesive or the product bonded by the adhesive meets the corresponding anti-delamination requirements. Require. This document is intended to assist users in selecting appropriate adhesives and in evaluating adhesives and wood products bonded to them. This document is applicable to the determination of the delamination resistance of adhesives for interior wood products in non-harsh environments, and can be used as a reference for other adhesive products. This document is not applicable to the determination of structural components. NOTE. When this method is used to test actual bonded products, the test results may not be accurate because the test laboratory generally has no control over how the product is assembled. Comparability.2 Normative referencesThe contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB/T 17517 Test method for compressive shear strength of adhesives between wood and wood (GB/T 17517-1998, ISO 6238. 1987,eqv) pieces) pieces)3 Terms and DefinitionsThe following terms and definitions apply to this document. 3.1 Delamination The phenomenon that boards are bonded together by adhesive and then separate after the environmental conditions change. 3.2 Delamination length The length of delamination at the edge of the board after bonding. 3.3 The ability of an adhesive to resist delamination under environmental conditions. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 44749.2-2024_English be delivered?Answer: Upon your order, we will start to translate GB/T 44749.2-2024_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 44749.2-2024_English with my colleagues?Answer: Yes. 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