高等学校化学学报2018，Vol.39Issue(5)：1084-1090,7.DOI:10.7503/cjcu20160675
生物基不饱和聚酯树脂胶液及其棉织物增强复合材料的制备与性能
Preparation and Properties of a Bio-based Unsaturated Polyester Resin Glue and Its Cotton Fabric-reinforced Composite
摘要
Abstract
A novel blending solvent, the mixture of acrylated epoxidized soybean oil(AESO)and glycidyl methacrylate(GMA), was proposed to prepare bio-based unsaturated polyester systems. The bio-based unsaturated polyester(UPOEM)was synthesized by ethylene glycol, oxalic acid and maleic anhydride via a melt polycondensation. By dilution using the blending solvent of AESO/GMA, the resulting unsaturated polyester resin glues have low viscosity, high bio-based content, good storage stability, and improved wettability with reinforcing fibers. Experimental data show that GMA can effectively reduce the viscosity of the AESO/UPOEM systems. When GMA,AESO and UPOEM are blended in a mass ratio of 100:100:300,the viscosity is decreased to 780 mPa·s, only 5.4% of the original. The GMA/AESO/UPOEM mixture keeps yellow and transparent, and the viscosity is constant at room temperature for more than 30 d. Furthermore, green composites were prepared by compositing the unsaturated polyester systems with cotton fabrics via a free radical polymerization performed at 100 ℃ for 2 h and 150 ℃ for 3 h, under a pressure of 15 MPa in a hot pressing machine,and using a mixture of tert-butyl peroxybenzoate and isophorondiamine as initiator. The ten-sile and thermo-mechanical properties of the resulting green composites were examined by universal testing ma-chine,dynamic mechanical analysis(DMA)and thermogravimetric analysis(TGA), respectively. The results show that the composites have good tensile strength close to 30 MPa, and their glass transition temperature (Tg)and thermal decomposition temperature(Td,5%)are greater than 90 ℃ and 248 ℃, respectively. These results suggest that the bio-based unsaturated polyester systems have a great potential for various applications.关键词
生物基不饱和聚酯/丙烯酸环氧大豆油/甲基丙烯酸缩水甘油酯/活性稀释剂/绿色复合材料Key words
Bio-based unsaturated polyester/Acrylated epoxidized soybean oil/Glycidyl methacrylate/Reactive diluent/Green composite分类
化学化工引用本文复制引用
杨泽文,张艳艳,付飞亚,刘向东..生物基不饱和聚酯树脂胶液及其棉织物增强复合材料的制备与性能[J].高等学校化学学报,2018,39(5):1084-1090,7.基金项目
国家自然科学基金(批准号:51573167)资助. Supported by the National Natural Science Foundation of China(No.51573167). （批准号:51573167）
