摘要
One kind of novel reactive thermotropic liquid crystalline polymer-methacryloyl copolymer (LCMC) containing polyester mesogenic units was synthesized. Its structure, morphology and properties were investigated systemically by Ubbelohde viscometer, differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FTIR), wide-angle X-ray diffractometry (WAXD) and polarizing optical microscopy (POM). The results indicate that it is one kind of nematic thermotropic liquid crystal polymer (TLCP). The impact strength, bending strength and the morphologies of impact fracture surface of LCMC, unsaturated polyester (UP) and glass fiber (GF) in-situ hybrid composites were studied by Izod impact tester, universal testing machine and scanning electron microscopy (SEM), respectively. The results show that the impact and bending strength of composites containing LCMC are improved, especially the composites containing 5% LCMC increases most obviously. These results with SEM results reveal that LCMC plays an important role in the improvement of interfacial adhesive between matrix and fiber.
One kind of novel reactive thermotropic liquid crystalline polymer-methacryloyl copolymer （LCMC） containing polyester mesogenic units was synthesized. Its structure, morphology and properties were investigated systemically by Ubbelohde viscometer, differential scanning calorimetry （DSC）, Fourier transform infrared spectroscopy （FTIR）, wide-angle X-ray diffractometry （WAXD） and polarizing optical microscopy （POM）. The results indicate that it is one kind of nematic thermotropic liquid crystal polymer （TLCP）. The impact strength, bending strength and the morphologies of impact fracture surface of LCMC, unsaturated polyester （UP） and glass fiber （GF） in-situ hybrid composites were studied by Izod impact tester, universal testing machine and scanning electron microscopy （SEM）, respectively. The results show that the impact and bending strength of composites containing LCMC are improved, especially the composites containing 5% LCMC increases most obviously. These results with SEM results reveal that LCMC plays an important role in the improvement of interfacial adhesive between matrix and fiber.
出处
《中国有色金属学会会刊：英文版》
CSCD
2006年第B02期529-533,共5页
Transactions of Nonferrous Metals Society of China
基金
Project(50473060) supported by the National Natural Science Foundation of China
关键词
现场杂化复合物
热致液晶聚合物
不饱和聚酯
制备
力学性质
thermotropic liquid crystalline polymer
in-situ hybrid composite
unsaturated polyester
mechanical properties
