溶剂对聚氨酯预聚体中异氰酸根含量测定的影响  

The Effect of Solvent on Isocyanate Group Content Determination in Polyurethane Prepolymer

作　　者：郭焕 谭舸 

机构地区：[1]大连固瑞聚氨酯有限公司,辽宁大连116000

出　　处：《聚氨酯工业》2014年第3期44-46,共3页Polyurethane Industry

摘　　要：采用丙酮溶解预聚体,甲苯-二正丁胺为反应体系,考察不同溶剂及反应时间对聚氨酯预聚体中异氰酸酯含量测定的影响,同时考察了溶剂用量对测定结果的影响。结果表明,丙酮为溶剂,甲苯-二正丁胺与异氰酸根反应,结果准确度在国家标准允许范围内,测定异氰酸根含量结果与理论值基本一致。The effects of different solvents and reaction times on determination of isocyanate group content in polyurethane prepolymer were studied, reaction system was toluene-butylamine using acetone dissolving prepolymet. Meanwhile the influence of the solvent dosage on the test results was investigated. The tests showed that the result accuracy was in the extent permitted of national standard when solvent was acetone, isoeyanate reacted with toluene-dibutylamine. The test result of isocyanate group content was consistent with theoretical values.

关 键 词：聚氨酯预聚体 溶剂 异氰酸根含量 二正丁胺 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]