甲基乙烯基硅橡胶生胶摩尔质量和乙烯基含量的快速测定  

Rapid Determination of Molar Mass and Vinyl Content of Methyl Vinyl Silicone Rubber

作　　者：陈立军 乔艳慧 刘彬 CHEN Li-Jun;QIAO Yan-Hui;LIU Bin(Research Center of Silicone New Material Engineering and Technology,Tangshan Sanyou Silicon Industry Co.,Ltd.,Tangshan 063305,Hebei)

机构地区：[1]唐山三友硅业有限责任公司河北省有机硅新材料工程技术研究中心

出　　处：《有机硅材料》2019年第6期488-492,共5页Silicone Material

摘　　要：采用门尼黏度仪测定甲基乙烯基硅橡胶生胶的摩尔质量,采用顶空气相色谱测定其乙烯基含量.结果表明,样品门尼黏度与摩尔质量的标准曲线相关性较好,采用门尼黏度仪测生胶的摩尔质量精密度高;顶空气相色谱测定乙烯基值精密度良好,与国标中规定的化学法测定结果无显著性差异,符合测试要求.相比现有的行业和国家标准,这两种方法具有数据检测准确、快速、重复性好、对环境无污染等优点.The molar mass of methyl vinyl silicone rubber was measured by Mooney viscometer,and the vinyl content was determined by HS-GS. The correlation is better between the Mooney value of the sample and the standard curve of the molar mass. Results show that there is a good correlation of the standard curve between the Mooney value and the molar mass. Using the Mooney viscometer to measure the molar mass of the rubber has high precision. The head space gas chromatography is used to determine the vinyl value,which has high precision and is in accordance with the national standard. There is no significant difference in the results of the chemical method and it meets the requirements of the test. Compared with the current industry and national standards,both methods have the advantages of accurate,rapid,reproducible and environmental friendly.

关 键 词：摩尔质量 乙烯基含量 甲基乙烯基硅橡胶生胶 顶空气相色谱仪 门尼黏度仪 

分 类 号：TQ333.93[化学工程—橡胶工业]