丁腈基聚氨酯脲有机蒙脱土复合材料的制备与性能  

The Preparation and Properties for Poly(HTBN) Urethane-Urea/ OMMT Nanocomposites

作　　者：李再峰[1] 孙健[1] 王胜军[1] 李金艳[1] 郝俊松[1] 杜娟[1] 

机构地区：[1]生态化工教育部重点实验室(青岛科技大学),山东青岛266042

出　　处：《高分子材料科学与工程》2010年第8期120-123,共4页Polymer Materials Science & Engineering

基　　金：山东省自然科学基金资助项目(Y2008B08);山东省中青年科学家奖励基金(2007BS04001);山东省科技攻关计划(2008GG10003008)

摘　　要：采用超声波辅助混合手段,将丁腈羟液体聚合物多元醇和有机蒙脱土(OMMT)进行预混插层处理,然后与甲苯二异氰酸酯(TDI)进行反应,得到层状硅酸盐复合预聚体。将预聚体与扩链剂(DMTDA)反应制备出聚氨酯脲(PUU)/有机蒙脱土(OMMT)复合材料。用材料拉伸机、热失重分析仪(TGA)、动态粘弹谱仪(DMA)分别对材料的性能进行测试。结果表明,当OMMT含量在3%时,材料表现出较强的增强作用,力学性能达到最高值。OMMT的加入提高了聚氨酯弹性体第一和第二热失重区的热降解温度,提高了软段的玻璃化转变温度和内损耗因子tanδ。透射电镜表明复合材料有较好的插层、剥离行为。With ultrasonic wave assistant mixing way, a intercalated mixture of polyol/OMMT was pretreated. The clay composed prepolymer was prepared by reaction of polyol/OMMT mixture with toluene diisocyanate （TDI）. Then the resultant prepolymer reacted with extender by the prepolymer process, and then the polyuretahne-urea/ organo montmorillonite （PUU/OMMT） nanocomposites were got. The properties of PUU/OMMT nanocomposites were characterized by Fourier transform infrared spectrum （FT-IR）, strain-stress machine, thermogravimetry analysis（TG）, dynamic mechanical analysis（DMA）. The results show that when the OMMT content is 3%, the strong reinforcement between nano particle and PUU macromolecule chain was present, and the PUU/OMMT nanocomposites perform the super mechanical properties, owing the presence of OMMT, both the Tg of the soft segment and the tan8 of the PUU increase, and the decomposition temperature for the first step and the second step increases respectively. Transmission electron microscopy （TEM） images show that the better intercalative or exfoliated behavour is observed.

关 键 词：丁腈 聚氨酯脲 纳米复合材料 性能 

分 类 号：TB383[一般工业技术—材料科学与工程]