聚醚硅氧烷/聚半硅氧烷双重改性蓖麻油基水性聚氨酯  

Castor Oil Based Waterborne Polyurethane Doubly Modified Polyether Modified by Polysiloxane and Double-decker Octaphenylsilsesquioxanetetraol

作　　者：葛硕硕 张萍波 蒋平平 唐敏艳 俞晓琴 包燕敏 高学文 GE Shuo-shuo;ZHANG Plng-bo;JIANG Ping-ping;TANG Min-yan;YU Xiao-qin;BAO Yan-min;GAO Xue-wen(School of Chemical and Material Engineering,Jiangnan University,Wuxi 214122,Jiangsu,China;Kunshan Jialipu Making-plate Adhesive Ink Co.,Ltd.,Kunshan 215300,Jiangsu,China;Jiahe Industrial（Suzhou）Co.,Ltd,Suzhou 215021,Jiangsu,China)

机构地区：[1]江南大学化学与材料工程学院,江苏无锡214122 [2]昆山嘉利普制版胶粘剂油墨有限公司,江苏昆山215300 [3]嘉合实业苏州有限公司,江苏苏州215021

出　　处：《精细化工》2018年第9期1504-1510,1517,共8页Fine Chemicals

基　　金：江苏省产学研联合创新资金项目(BY2014023-08)~~

摘　　要：以蓖麻油与端羟基聚醚改性聚二甲氧基硅氧烷（PEPSO）互混作为多元醇原料，制备出植物油基水性聚氨酯，将不同用量的四羟基八苯基双层笼型倍半硅氧烷（DDSQ-40H）引入到其中，制备出系列PEPSO／DDSQ-40H复合改性聚氨酯纳米复合材料（WPU-15、WPU-15-2、WPU-15-4、WPU-15-6、WPU-15-8）。利用FTIR、1HNMR、TGA、SEM、TEM和粒径分析仪对DDSQ-40H及PEPSO／DDSQ-40H进行了结构表征与性能测试，并探讨了DDSQ-40H对聚氨酯材料热稳定性、表面疏水性及力学性能的影响。TGA结果表明，与不含DDSQ-40H的聚氨酯材料相比，当DDSQ-40H6用量为8％（以扩链剂乙二胺物质的量为基准，下同）时，复合材料的初始降解温度（乃％）提高了22．5℃静态接触角、扫描电镜测试结果表明，随DDSQ-40H用量的增加，粒子问出现团聚现象，但仍能均匀分散于水性聚氨酯基体中，材料表面的疏水性增大，样品WPU-15-6的静态接触角达到90．4°；拉伸测试结果表明，DDSQ-40H的引入能在一定程度上提高材料的拉伸强度，由WPU-15的9．7MPa增至WPU-15-6的16．0MPa。Plant oil-based waterborne polyurethanes were synthesized from castor oll and hydroxyl- terminated polyether modified polysiloxane （PEPSO）. During the synthesis of prepolymer, different amount of double-decker octaphenylsilsesquioxanetetraol （DDSQ-4OH） was introduced into the waterborne polyurethane main chains, which led to a series of PEPSO/DDSQ-4OH modified waterborne polyurethane nanocomposites with different amount of DDSQ-4OH （WPU-15, WPU-15-2, WPU-15-4, WPU-15-6 and WPU-15-8）. FTIR, 1HNMR, TGA, SEM, TEM and particle size analyzer were used to characterize these materials. The influence of nano-particle DDSQ-4OH on the thermal stability, hydrophobicity and mechanical properties of polyurethane materials was discussed. TGA results showed that the initial decomposition temperature （T5%） of the composite containing 8% （based on mole of the chain extender ethylenediamine, as the below） DDSQ-4OH increased by 22.5 ℃ compared with WPU which didn＇t contain DDSQ-4OH. Static contact angle test and SEM results revealed that when the DDSQ-4OH amount increased, the hydrophobicity of the obtained polyurethanes was improved, and the static contact angle of sample WPU-15-6 reached 90.4°. DDSQ-4OH could disperse homogeneously in the WPU matrix, although nanoparticles may occur to aggregate with increasing the addition amount of DDSQ-4OH. Mechanical test results demonstrated that the introduction of DDSQ-4OH could enhance the tensile strength of polyurethanes to some extent, the tensile strength increased from 9.7 MPa （WPU-15） to 16.0 MPa （WPU-15-6）.

关 键 词：聚醚硅氧烷二元醇 四羟基八苯基双层笼型倍半硅氧烷 植物油基水性聚氨酯 复合材料 功能材料 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]