原位聚合法制备连续玻璃纤维增强PCBT复合材料及其性能  

Preparation and properties of continuous fiber reinforced PCBT composites by in-situ polymerization

作　　者：张翼鹏[1,2] 颜春[1] 阮春寅[1] 丁江平[1] 刘俊龙[2] 范欣愉[1] 

机构地区：[1]中国科学院宁波材料技术与工程研究所,宁波315201 [2]大连工业大学纺织与材料工程学院,大连116034

出　　处：《复合材料学报》2012年第4期29-35,共7页Acta Materiae Compositae Sinica

基　　金：中国科学院知识创新工程重要方向项目(KGCX2-EW-210);宁波市自然科学基金(2011A610115)

摘　　要：采用环状对苯二甲酸丁二醇酯(CBT)原位聚合制备了连续玻璃纤维(GF)增强聚环状对苯二甲酸丁二醇酯(PCBT)复合材料。考察了聚合反应中催化剂用量对PCBT结晶度以及GF/PCBT复合材料力学性能的影响。当催化剂用量为0.5%(质量分数)时,PCBT的结晶度为53%,GF/PCBT的力学性能达到最佳,拉伸强度为522MPa,拉伸模量为27GPa,弯曲强度为481MPa,弯曲模量为24.8GPa,层间剪切强度(ILSS)为43MPa。SEM观察表明,发现催化剂用量为0.5%时,树脂与纤维的结合性较好。进一步研究了淬火和退火后处理对复合材料力学性能的影响。发现复合材料退火处理后具有较好的力学性能,其中拉伸强度为545MPa,弯曲强度为495MPa。Continuous glass fiber（GF） reinforced poly（cyclic butylene terephthalate）（PCBT） composites were prepared via in-situ polymerization of cyclic butylene terephthalate（CBT）.The effects of the catalyst contents on the crystallinity and the mechanical properties of GF/PCBT composites were studied.When the catalyst mass fraction reaches 0.5%,the crystallinity is 53% and the GF/PCBT composites show the highest values of mechanical properties,tensile strength 522 MPa,tensile modulus 27 GPa,flexural strength 481 MPa,flexural modulus 24.8 GPa and interlaminar shear strength（ILSS） 43 MPa.The SEM results show good bonding quality between the fiber and the matrix at 0.5% of catalyst.The effects of quenching and annealing treatments on the mechanical properties of GF/PCBT composites were further investigated.The results show that the improved mechanical properties after annealing treatment,tensile strength is 545 MPa and flexural strength is 495 MPa.

关 键 词：聚环状对苯二甲酸丁二醇酯 复合材料 原位聚合 真空辅助树脂灌注 力学性能 结晶度 

分 类 号：TB332[一般工业技术—材料科学与工程]