GB/T 17748—2016中涂层耐磨耗性实验方法存在的问题研究  

Research on the Problems in the Testing Method for Wear Resistance of Coating in GB/T 17748—2016

作　　者：张伟杰 唐晓旭 牛海山 梁杨 杨兵 Zhang Weijie;Tang Xiaoxu;Niu Haishan;Liang Yang;Yang Bing(China Academy of Building Research,Beijing 100013,China)

机构地区：[1]中国建筑科学研究院有限公司,北京100013

出　　处：《涂料工业》2023年第12期52-57,共6页Paint & Coatings Industry

基　　金：中国建筑科学研究院有限公司青年科研基金资助(20230112331030036)。

摘　　要：通过研究GB/T 17748—2016《建筑幕墙用铝塑复合板》中涂层耐磨耗性实验方法,发现标准中缺少仪器校准步骤,无法保证砂束流出导管后的磨损区域,建议修订标准时参考ASTM D968—2015和YS/T 1186—2017补充仪器校准程序;磨损终点的确定是以仪器校准为前提,否则得到的磨损终点很容易是一个月牙形而不是标准中所描述的圆形;标准中未给出砂子使用次数,建议参考ASTM D968—2015中的25次,以保证砂子的最佳磨损效果;标准中规定砂子粒径的同时,还需规定砂子密度,确保流速一致;每次加入漏斗中的砂量,建议参考国外标准定为2~3 L;检测结果要达到标准规定的耐磨耗性≥5 L/μm难度很大,并且直接计算结果受仪器、磨料影响较大,重复性和复现性较低,建议采用排序判定方式。“Aluminium—plastic composite panel for curtain wall”(GB/T 17748—2016)was the main testing standard for aluminum—plastic composite panel for curtain wall.This paper mainly studied the test method of coating wear resistance in the standard.It was found that the standard lacks the instrument calibration procedure,which could not guarantee where the abrasion area would be formed after the sand beam flows out of the catheter.It was suggested that the standard should refer to ASTM D968—2015 and YS/T 1186—2017 to supplement the instrument calibration procedure in the next revision process.The determination of the wear end point was based on the instrument calibration.If the instrument calibration was not carried out,the wear end point obtained was easily a crescent area rather than the circular area described in the standard.The standard did not give the number of times the sand was used.It was recommended to replace the sand by referring to the 25 times of use in ASTM D968—2015 to ensure the best wear effect of the sand.The standard should not only give the specified value of sand particle size,but also give the specified value of sand density to ensure consistent flow rate.It was also necessary to fix the amount of sand added into the funnel each time.It was recommended to refer to the foreign standard 2-3 L to ensure the accuracy of detection.It was very difficult for the test results to meet the wear resistance≥5 L/μm specified in the standard,and the direct calculation results were greatly affected by instruments and abrasives,and the repeatability and reproducibility were low.It was recommended to use sequencing method to determine.

关 键 词：GB/T 17748—2016 耐磨耗性 仪器校准 磨损终点 砂束流速 排序 

分 类 号：TQ630.72[化学工程—精细化工]