碳酸钙填充的含铅PVC材料中灰分的测定  

Determination of ash in lead-containing PVC materials filled with calcium carbonate

作　　者：杜文佳 林纬文 陈小函 肖照华 扈廷勇 DU Wenjia;LIN Weiwen;CHEN Xiaohan;XIAO Zhaohua;HU Tingyong(Wuzhou Food and Drug Inspection Institute,Wuzhou 543002,China;Guangxi Wuyi Pipe Industry Co.,Ltd.,Wuzhou 543000,China;Wuzhou Product Quality Inspection Institute,Wuzhou 543002,China)

机构地区：[1]梧州市食品药品检验所,广西梧州543002 [2]广西五一管业股份有限公司,广西梧州543000 [3]梧州市产品质量检验所,广西梧州543002

出　　处：《聚氯乙烯》2024年第7期25-29,36,共6页Polyvinyl Chloride

摘　　要：对比分析采用GB/T 9345.5-2010《塑料灰分的测定第5部分:聚氯乙烯》中方法A和方法C测定碳酸钙填充含铅PVC材料灰分结果的差异,指出碳酸钙填充含铅PVC材料按方法B和方法C测定灰分过程中,碳酸钙转化为硫酸钙导致灰分测定结果偏高,从技术与标准化方面进行了讨论并提出了标准的应用建议。A comparative analysis was conducted on the differences in the ash determination results of lead-containing PVC materials filled with calcium carbonate by method A and method C in GB/T 9345.5-2010 Plastics-Determination of ash-Part 5:Poly(vinyl chloride).It was pointed out that in the determination of ash content in lead-containing PVC materials filled with calcium carbonate according to method B and method C,the conversion of calcium carbonate to calcium sulfate led to higher ash determination results.Technical and standardization aspects were discussed,and suggestions for the application of the national standard were proposed.

关 键 词：PVC 国家标准 碳酸钙 硬脂酸铅 灰分 硫酸铅 硫酸钙 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业] TQ014