灰分指标在PVC-U管材标准中的设立探讨
Discussion on Establishment of Ash Content Index in PVC-U Pipe Standards
何郑钧 1肖照华 2杨科杰 3扈廷勇4
作者信息
- 1. 浙江钛石质量检测研究院有限公司,浙江 诸暨,311814
- 2. 梧州市产品质量检验所,广西 梧州,543002
- 3. 浙江枫叶管业科技股份有限公司,浙江 诸暨,311816
- 4. 广西五一管业股份有限公司,广西 梧州,543000
- 折叠
摘要
研究了硬聚氯乙烯(PVC-U)管材灰分指标的测定方法及其在产品标准中的应用.结果表明:在相同灼烧条件下,不同种类PVC-U管材用无机填料的失重率各不相同.不能只依据灰分推导 PVC-U 管材的填充材料用量和力学性能变化.以灰分指标为代用指标缺乏可靠性,灰分限量值设定无法提升产品质量,对产品质量控制产生干扰作用,且 GB/T 5836.1-2018《建筑排水用硬聚氯乙烯(PVC-U)管材》现有力学性能指标作为直接性能指标能够满足 PVC-U 管材的使用性能要求,没有必要增加灰分指标.
Abstract
The determination method of ash content index of unplasticized poly(vinyl chloride)(PVC-U)pipes and its application in product standards were studied.The results show that under the same burning conditions,the weight loss rates of inorganic fillers used in different types of PVC-U pipes vary.The filling material dosage and mechanical property changes of PVC-U pipes cannot be derived solely based on ash content.The use of ash content index as a substitute indicator lacks reliability,and the setting of ash content limit values cannot improve product quality,which interferes with product quality control.Moreover,the existing mechanical property indicators in GB/T 5836.1-2018"Unplasticized poly(vinyl chloride)(PVC-U)pipes for soil and waste discharge inside buildings"can meet the performance requirements of PVC-U pipes as a direct property indicator,and there is no need to increase the ash content index.
关键词
硬聚氯乙烯管材/灰分指标/无机填料/力学性能Key words
unplasticized poly(vinyl chloride)pipe/ash content index/inorganic filler/mechanical property引用本文复制引用
基金项目
广西科技基地和人才专项(2020AC26007)
梧州高新区、梧州学院产学研项目(2020)(2020G006)
出版年
2024
NETL
NSTL
万方数据