低游离TDI含量聚氨酯固化剂的研究  

Polyurethane curing agent with low free TDI content

作　　者：孙德彬[1] 花铁果 

机构地区：[1]中南林业科技大学材料科学与工程学院,湖南长沙410004 [2]广东产品质量监督检验研究院,广东佛山528300

出　　处：《中南林业科技大学学报》2010年第8期129-132,共4页Journal of Central South University of Forestry & Technology

基　　金：湖南省教育厅资助项目"环保型聚氨酯涂料的研究"(项目编号09C1013);中南林业科技大学青年基金资助项目(项目编号2009055B)

摘　　要：聚氨酯固化剂中游离二异氰酸酯(TDI)含量是重要的环境评价指标。通过对TDI和TMP的摩尔比、反应温度、滴加反应时间和保温反应时间等工艺参数对游离TDI含量的影响进行了探讨,采用响应面法建立了二次回归模型,用此模型对合成工艺进行优化。结果显示:当摩尔比为0.25、滴加反应时间为5.6 h、反应温度为64℃、保温时间为2 h时,能够获得比较理想的效果,反应物中游离TDI的含量为1.07%。The content of free TDI in polyurethane curing agent is an very important evaluation index.Effects of molar ratio of TDI to TMP,reaction temperature,dropping time and holding time on free TDI content were discussed.A quadratic regression models was built up.The synthesis process was analyzed by response surface methodology and was optimized.The results show that the ideal content of free TDI was 1.07% as molar ratio was 0.25,dropping time was 5.6 hours,reaction temperature was 64°C and holding time was 2 hours.

关 键 词：化学工程 聚氨酯涂料 聚氨酯固化剂 低游离TDI 响应面分析 

分 类 号：TQ630.1[化学工程—精细化工]