剑麻纤维素微晶/酚醛树脂力学性能和动态力学性能的研究  

Mechanical and Dynamic Mechanical Properties of SFCM/PF

作　　者：黄绍军[1] 韦春[1] 刘红霞[1] 吕建[1] 曾思华[1] 

机构地区：[1]桂林理工大学材料科学与工程学院,广西桂林541004

出　　处：《现代塑料加工应用》2013年第1期1-4,共4页Modern Plastics Processing and Applications

基　　金：国家自然科学基金(51163003;21264005)资助

摘　　要：采用硅烷偶联剂KH550对从剑麻中提取的剑麻纤维素微晶(SFCM)进行改性,对SFCM与酚醛树脂(PF)进行熔融共混、用模压成型工艺制备SCFM/PF复合材料,研究SFCM含量对复合材料的力学性能、动态力学性能、蠕变和应力松弛性能的影响。结果表明,与PF相比,SFCM/PF复合材料的冲击强度和弯曲强度分别提高了54.94%,31.37%,储能模量提高了30%,玻璃化转变温度提高了41℃,蠕变和应力松弛性能也得到了提高。Sisal fiber cellulose microcrystalline（SFCM） extracted trom slsat I1oer wa~ modified by coupling agent KH550, the SFCM/phenolic formaldehyde（PF） composites were prepared by blending technology and molding method. Effects of the SFCM con- tents on the mechanical properties,dynamic mechanical properties, creep and stress re- laxation of the composites were studied. The results show that compared with PF, the impact strength and bending strength of the SCFM/PF composites are increased by 54.94% and 31.37% respectively. The storage modulus and the glass transition tempera- ture are increased by 30% and 41 ℃ respectively. The behaviors of the stress relaxa- tion and creep are also improved.

关 键 词：剑麻纤维素微晶 酚醛树脂 复合材料 力学性能 动态力学性能 蠕变应力松弛 

分 类 号：TQ327[化学工程—合成树脂塑料工业]