POSS改性聚氨酯的合成及性能  

Synthesis and Properties of POSS Modifated Polyurethane

作　　者：王文平[1] 丁伟良[1] 吕晓勇[1] 俞建[1] 江航[1] 

机构地区：[1]合肥工业大学化学工程学院,安徽合肥230009

出　　处：《高分子材料科学与工程》2013年第1期40-43,共4页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(50673023)

摘　　要：以甲苯-2,4-二异氰酸酯为硬段结构物质,聚乙二醇4000为软段物质,1,4-丁二醇为交联剂,在氮气保护的氛围下通过加入不同量的1,3,5,7,9,11,13-苯基-15-二乙醇胺丙基笼形低聚倍半硅氧烷(羟基POSS)合成出POSS改性的聚氨酯(POSS-PU)。采用傅里叶红外技术(FT-IR)、氢谱核磁共振(1H-NMR)、差示扫描量热技术(DSC)和热重分析技术(TGA)及电子拉力试验机对POSS-PU的结构和性能进行了研究。结果表明,POSS的引入量为10%时,POSS-PU的Tg提高近5℃,Tm提高了10℃,分解温度提高了35℃,拉伸强度和断裂伸长率增加了近1倍。A POSS-PU composite was synthesized by the reaction of toluene-2,4-diisocya- nate and polyethylene glycol with 1,3,5,7,9, 11, 13-phenyl-15-diethanol amine propyl polyhedral oligomeric silesesquioxanes （ hydroxyl POSS） under the protection of nitrogen. 1,4-butyl glycol was applied as cross-linking agent. The structures and properties of the POSS-PU composite synthesized were investigated by Fourier infrared technology （FT-IR）, hydrogen spectrum nuclear magnetic resonance （1H-NMR）, differential scanning calorimetry （DSC） technology, thermogravimetric analysis （TGA） and the electronic tensile testing machine. The results show that when the POSS content is 10 %, Tg of POSS-PU increases by nearly 5 ℃, Tm increases 10 ℃, the decomposition temperature increases 35 ℃, tensile strength and elongation at break increase almost 1 times.

关 键 词：聚氨酯 笼形低聚倍半硅氧烷 结构 热性能 力学性能 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]