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GB/T 9756-2018: Synthetic resin emulsion coatings for interior wall Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 9756: Historical versions
GB/T 9756-2018: Synthetic resin emulsion coatings for interior wall---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/GBT9756-2018GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 87.040 G 51 Replacing GB/T 9756-2009 Synthetic resin emulsion coatings for interior wall Issued on. JUNE 7, 2018 Implemented on. JANUARY 1, 2019 Issued by. State Administration for Market Regulation; Standardization Administration of the People's Republic of China. Table of ContentsForeword... 3 1 Scope... 5 2 Normative references... 5 3 Classification and grading... 6 4 Requirements... 6 5 General requirements... 7 6 Inspection rules... 12 7 Marking, packaging and storage... 13 Annex A (Normative) Method for testing anti-efflorescence... 14ForewordThis Standard was drafted in accordance with the rules given in GB/T 1.1-2009. This Standard replaces GB/T 9756-2009, Synthetic resin emulsion coatings for interior wall. Compared with GB/T 9756-2009, the major technical changes, in addition to editorial changes, are as follows. -- Change the scope of the standard (see Clause 1; Clause 1 of 2009 edition); -- Delete the normative references including “GB/T 1250 and JC/T 412.1-2006” (see Clause 2 of 2009 edition); -- Add the normative references including “GB/T 6682-2008, GB/T 8170-2008 and GB/T 23981-2009” (see Clause 2); -- Add the items, indexes and test methods of low-temperature film-forming properties of primers and finishes (see 4.1, 4.2 and 5.5.5); -- Change the technical indexes of scrub resistance of film of finishes. the qualified product’s acceptance index of scrub resistance of film of finishes is changed from “≥ 300 times” into “≥ 350 times”, the first-class product’s index is changed from “≥ 1000 times” into “1,500 times” and superior product’s index is changed from “≥ 5,000” into “≥ 6,000” (see 4.2; 4.2 of 2009 edition); -- Add the specifications of waterproof abrasive paper used for substrate polishing and the inspection method for substrate flatness for the item of scrub resistance of film (see 5.3); -- Change the contents including wet-film thickness, sample density and unit of test panel area in the calculation equation of primer brushing amount (see 5.4.2.1; 5.2.2.4 of 2009 edition); -- Add the panel making requirements for the arbitration test for the items of contrast ratio and scrub resistance of film (see 5.4.3.2); -- Change the test panel thickness for the item of scrub resistance of film, from “430 mm × 150 mm × (4 ~ 6) mm” into “430 mm × 150 mm × 6 mm” (see Table 5; Table 5 of 2009 edition); -- Add the requirements for brushes during the arbitration test for the item of scrub resistance of film (see 5.5.11); -- Add the processing requirements, when the PVA water solution for the item anti- efflorescence has aggregation, precipitation, etc. during storage (see A.1.1.1; A.1.1.1 of 2009 edition); -- Change the storage period of the PVA-iron blue water dispersion liquid, from “not exceeding 1 month” into “not exceeding 15 d” (see A.1.1.2; A.1.1.2 of 2009 edition); -- Change the height of the test solution immersion test panels for the item of anti- efflorescence, from “greater than 1/2 of the test panel thickness” into “greater than 2/3 of the test panel thickness” (see A.3.2; A.3.2 of 2009 edition). This Standard was proposed by the China Petroleum and Chemical Industry Association. This Standard shall be under the jurisdiction of National Technical Committee 5 on Paints and Pigments of Standardization Administration of China (SAC/TC 5). The drafting organizations of this Standard. CNOOC Changzhou Paint Chemical Research Institute, Dow Chemical Company (China) Investment Co., Ltd., ICI Swire Paints (Shanghai) Co., Ltd., Nippon Paint (China) Co., Ltd., Shanghai Research Institute of Paint and Coatings Co., Ltd., Guangdong Carpoly Technological Materials Co., Ltd., Foshan Shunde District BATF Industrial Co., Ltd., Guangdong Huarun Paints Co., Ltd., 3trees Paint Co., Ltd., Guangdong Bardese Chemical Co., Ltd., Zhejiang Huade New Materials Co., Ltd., Shenzhen Grandland Environmental Protection Paint Co., Ltd., Caparol (China) Co., Ltd., Hebei Tianxin Construction Group Co., Ltd., First New Material Technology Development Co., Ltd., Zhanchen New Material Group Co., Ltd., Zhejiang Transfar Paint Co., Ltd., China Paint MFG (Shenzhen) Co., Ltd., Hebei Chenyang Industry and Trade Group Co., Ltd., Ningbo Xinan Coating Co., Ltd., Shandong Lehua Paint Industry Co., Ltd., Alligator Paint (Shanghai) Co., Ltd., Northwest Yongxin Paint Co., Ltd., DMT Production (Beijing) Co., Ltd., Bauhinia Coatings (Shanghai) Co., Ltd., BASF New Materials Co., Ltd., Jiangsu Elephant Coating Co., Ltd., Maco Group Co., Ltd., Kansai Paint (China) Investment Co., Ltd., Antext Chemical (Zhongshan) Co., Ltd., Xiang Jiang Paint Technology Co., Ltd., Shanghai Jianke Technical Assessment of Construction Co., Ltd. The main drafters of this Standard. Liu Lin, Tang Ying, Nan Xuan, Wang Yan, Gao Jidong, Zhang Weiqun, Luo Zhiqing, Liang Piaojian, Kou Hui, Lin Changqing, Li Jinming, Wang Weidong, Xu Xinxiang, Xiong Jun, Feng Xijie, Zhan Mingjia, Ye Shuqing, Wu Yong, Lin Qingwen, Hu Zhongyuan, Hu Jinping, Shen Xiaozhong, Xu Haifeng, Li Huaming, Yang Guoping, Xing Jun, Wang Fei, Yang Shaowu, Liu Fengxian, Meng Xianfeng, Yang Liwen, Zheng Daming, Hu Xiaozhen, Han Chaozheng. The previous editions of the standard replaced by this Standard are as follows. -- GB/T 9756-1988, GB/T 9756-1995, GB/T 9756-2001, GB/T 9756-2009. Synthetic resin emulsion coatings for interior wall1 ScopeThis Standard specifies the classification and grading, requirements, test methods, inspection rules and marking, packaging and storage, etc. for synthetic resin emulsion coatings for interior wall. This Standard applies to coatings for interior wall, including primers and finishes, which is based on synthetic resin emulsion, prepared with pigments, body pigments and all kinds of auxiliaries and forms a thin coating layer with a smooth surface after application.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition dated applies to this document. For undated references, the latest edition of the referenced documents (including all amendments) applies to this document. GB/T 1728-1979, Methods of test for drying time of coatings of paints and putties GB/T 1766-2008, Paints and varnishes – Rating schemes of degradation of coats GB/T 1910, Newsprint GB/T 3186, Paints, varnishes and raw materials for paints and varnishes – Sampling GB/T 6682-2008, Water for analytical laboratory use – Specification and test methods GB/T 6750-2007, Paints and varnishes – Determination of density – Pycnometer method GB/T 8170-2008, Rules of rounding off for numerical values and expression and judgement of limiting values GB/T 9265-2009, Determination for alkali resistance of film of architectural paints and coatings GB/T 9266-2009, Determination of scrub resistance of film of architectural paints and coatings3 Classification and gradingSynthetic resin emulsion coatings for interior wall are classified into primers and finishes in this Standard. Finishes are graded into qualified products, first-class products and superior products in accordance with the requirements for use.4 Requirements4.1 Primers shall be as required by Table 1. 4.2 Finishes shall be as required in Table 2.5 General requirements5.1 Sampling Conduct sampling as specified in GB/T 3186 or in accordance with a method as agreed. Sampling volume shall be as required by inspection. 5.2 Test environment Unless specified otherwise, the conditioning of test panels and the temperature- humidity of test shall be as specified in GB/T 9278. 5.3 Test base materials and their treatment methods Unless agreed otherwise, select base materials as specified in Table 3 and Table 5. For contrast ratio, use the polyester films or card papers as required in 4.4 of GB/T 23981-2009; use cement MDF panels containing no asbestos fibre reinforcement (A.1.3) for the item of anti-efflorescence; use cement panels containing no asbestos fibre for the other items. 5.4 Preparation of test sample panels 5.4.1 Sample preparation When the dilution ratio is not indicated for products to tested, make panels after stirring uniformly. When the dilution ratio is indicated for products to be tested, except for the item of contrast ratio, panels needs to be made for the others to carry out the items of inspection; panels shall be made after mixing uniformly in accordance with the dilution ratio specified; if the proportion is within a range, an intermediate value shall be taken. 5.4.2 Preparation of primer test sample panels 5.4.3 Preparation of test sample panels for finishes 5.5 Operational method 5.5.1 General Unless specified otherwise, only use reagents confirmed to be chemically pure or above, and distilled water or deionized water meeting the Grade-3 water requirements of GB/T 6682-2008 in test. Solutions for test shall be conditioned to test temperature before test. 5.5.9 Anti-efflorescence As specified in Annex A. 5.5.10 Contrast ratio Carry out test as specified in GB/T 23981-2009; use the polyester film method for arbitration inspection. 5.5.11 Scrub resistance Carry out test as specified in GB/T 9266-2009; use a brush with the maximum bristle bearing-pressure within (190 ± 40) N.6 Inspection rules6.1 Inspection classification 6.1.1 Product inspection includes exit-factory inspection and type inspection. 6.2 Criteria for inspection results 6.2.1 The criteria for inspection results shall be as specified in the rounding-off value comparison method of GB/T 8170-2008. 6.2.2 When the inspection results of the inspection items are as required in this Standard, then the test sample meet the requirements of this Standard.7 Marking, packaging and storage7.1 Marking Carry out test as specified in GB/T 9175.If water needs to be added for dilution, the dilution ratio shall be specified. 7.2 Packaging Carry out test in accordance with the grade two packaging requirements of GB/T 13491-1992. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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