炭黑含量测定方法标准对比研究  

Comparative Study of Test Methods for Carbon Black Content

作　　者：李岩 张伟杰 唐晓旭 姜磊 黄家文 程德宝 LI Yan;ZHANG Weijie;TANG Xiaoxu;JIANG Lei;HUANG Jiawen;CHENG Debao(China Academy of Building Research,Beijing 100013,China;National Engineering Research Center of Building Technology,Beijing 100013,China;Hebei Yutong Special Rubber Hose Co,Ltd,Hengshui 053500,China)

机构地区：[1]中国建筑科学研究院有限公司,北京100013 [2]国家建筑工程技术研究中心,北京100013 [3]河北宇通特种胶管有限公司,河北衡水053500

出　　处：《中国塑料》2021年第10期120-125,共6页China Plastics

基　　金：中国建筑科学研究院有限公司青年科研基金项目(20200112331030035)。

摘　　要：对比了3个国内外炭黑含量测定方法标准,探讨了管式电炉法、马弗炉法、热重分析仪法等3种测试方法的差异,并据此对GB/T 13021—XXXX《聚乙烯管材和管件炭黑含量的测定(热失重法)》标准的修订提供了建议。结果表明,GB/T 13021—1991包含的测定方法较为单一;建议GB/T 13021—XXXX标准修订时,在管式电炉法中,增加若使用氧气含量小于0.002%的氮气则可不进行除氧等规定,并增加试验前对样品舟的清洁和称重要求;增加马弗炉法(传统马弗炉法和微波马弗炉法)和热重分析仪法;马弗炉法建议称重步骤采用ISO 6964-2019的规定;热重分析仪法建议在ISO 6964-2019规定的基础上,增加取样部位和取值说明要求。This paper compared three test methods and standards of carbon black content at home and abroad and discussed the differences among the three test methods,including the tubular electric furnace method,muffle furnace method,and thermogravimetric analysis method. Based on the comparative studies,some suggestions were provided for the revision the GB/T 13021—1991 standard. The results indicated that the determination method included in the GB/T13021—1991 standard was relatively simple. To revise the GB/T 13021—1991 standard,some regulations were recommended to be included. For example,if the nitrogen with an oxygen content of less than 0. 002 %,oxygen removal may not be carried out in the tubular electric furnace method. The other regulations were also suggested to use,including the requirement for cleaning and weighting the sample prior to the formal test,appending a muffle furnace method(either a traditional muffle furnace method or a microwave muffle furnace method)and a thermogravimetric analyzer method. In muffle furnace method,weighing steps were recommended to adopt according to the provisions of the ISO 6964-2019 standard. In the thermogravimetric analyzer method,the sampling position and value description were recommended to be included in addition to the provisions of ISO 6964-2019.

关 键 词：聚乙烯 管材 炭黑 含量 管式电炉法 马弗炉法 热重分析仪法 

分 类 号：TQ320.77[化学工程—合成树脂塑料工业]