剑麻纤维素微晶/酚醛树脂复合材料的力学性能和摩擦性能  

Mechanical and Friction Properties of SFCM/PF Composites

作　　者：黄绍军[1] 韦春[1] 刘红霞[1] 吕建[1] 余传柏[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：《高分子材料科学与工程》2013年第4期97-100,共4页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(51163003;21264005);广西自然科学基金资助项目(2010GXNSFA;013030;2012GXNSFBA;053153;2012GXNSFBA;053155)

摘　　要：采用3-氨基丙基三乙氧基硅烷(KH550)对自行制备的剑麻纤维素微晶(SFCM)进行表面改性,采用双螺杆挤出机对SFCM与酚醛树脂(PF)进行熔融共混,采用模压成型方法制备SFCM/PF复合材料。研究不同SFCM含量的SFCM/PF复合材料的力学、摩擦学性能,并采用扫描电镜(SEM)观察磨损面的形貌。结果表明,SFCM的加入能有效提高复合材料的力学性能和摩擦性能,当SFCM含量为6%时,复合材料的冲击强度提高了55.56%,SFCM含量为4%时,复合材料的弯曲强度提高了31.37%;SEM观察发现,改性后的SFCM为微纤维形态,径向尺寸为10μm;热重分析表明,改性SFCM初始分解温度比剑麻纤维提高了60℃。Cellulose microcrystal extracted from sisal fiber （SFCM） was modified by silane coupling agent KH550. The SFCM/phenolic formaldehyde （PF） composites with different contents of SFCM were prepared by blending technology and molding method. Effects of the SFCM contents on the mechanical properties, hardness, and friction properties of the composites were studied. The impact strength and the flexural strength of the composites are increased by 55.56 % and 31.37 % respectively, and the friction properties of the composites are improved obviously by adding SFCM. SEM results show that the morphology of modified SFCM is in micro-fiber, and the initial decomposition temperature of modified SFCM increases by 60 ℃ over that of sisal fiber.

关 键 词：剑麻纤维素微晶 酚醛树脂 复合材料 摩擦性能 

分 类 号：TQ323.1[化学工程—合成树脂塑料工业]