PHET/PF原位复合材料力学、动态力学和热性能研究  

Study on Mechanical Properties,Dynamic Mechanical Properties and Thermal Properties of PHET/PF In-situ Composites

作　　者：高秋姗[1] 韦春[1] 卢卫中[1] 

机构地区：[1]桂林理工大学有色金属及材料加工新技术教育部重点实验室,材料科学与工程学院,广西桂林541004

出　　处：《塑料工业》2010年第11期55-58,共4页China Plastics Industry

基　　金：国家自然科学基金(50763001);广西自然科学基金(桂科自0728223);广西应用基础研究专项(桂科基0836016);广西研究生教育创新计划项目(2009105960305M13)

摘　　要：自行合成了端羟基的热致性聚酯液晶(PHET),采用原位复合的方法制备了热致性聚酯液晶(PHET)/酚醛树脂(PF)原位复合材料,研究了PHET的用量对PHET/PF原位复合材料的冲击强度、弯曲强度、动态力学性能、热性能等的影响。结果表明,PHET的加入可以提高PHET/PF原位复合材料的力学性能、动态力学性能和热性能,当PHET质量分数为7.5%时,原位复合材料的冲击强度、弯曲强度和玻璃化转变温度(Tg)分别提高了44.69%、44.68%和22.9℃。在200℃时,PHET/PF共混物中液晶丝状织态结构明显且分布连续。In this paper,thermotropic liquid crystal polymer（PHET）/phenol-formaldehyde resin（PF）in-situ composites were prepared by the in-situ composite method.Effects of PHET contents on impact strength,bending strength,dynamic mechanical properties,and thermal properties of PHET/PF composite were studied.Results showed that the addition of PHET improved the mechanical properties,dynamic mechanical properties,and thermal properties of PHET/PF composites.When the amount of PHET was 7.5%,the impact strength,bending strength and the glass transition temperature of PHET/PF composites increased by 44.69%,44.68% and 22.9 ℃,respectively.The formation of fibrillar PHET structures were well-distributed under 200 ℃.

关 键 词：酚醛树脂 热致性聚酯液晶 原位复合材料 力学性能 动态力学性能 热性能 

分 类 号：TB332[一般工业技术—材料科学与工程]