摘要
为了提高剑麻纤维和树脂基体的界面结合力,对剑麻纤维(SF)表面分别进行碱处理、热处理、KH-550硅烷偶联剂处理和氰乙基化处理后,再与酚醛树脂(PF)混合、辊炼和模压成型,制备了SF/PF复合材料;研究了表面处理方法对其冲击强度、弯曲强度、耐磨性和热失重的影响,并借助扫描电镜观察了复合材料的界面形态。结果表明:SF经过不同方法表面处理后,有效改善了SF与PF的界面结合力,其中碱处理使复合材料的冲击强度提高幅度最大,达到了34%;KH-550硅烷偶联剂处理使弯曲强度提高幅度最大,达20%,耐磨性能最好,提高了3.5倍;氰乙基化处理使复合材料初始分解温度由263℃提高到280℃。
In order to improve the interracial adhesion between sisal fiber （SF） and resin matrix, SF surface was treated by alkali, heat, KH-550 silane coupling agent and cyanoethylation, respectively. The sisal fiber/phenol formaldehyde （SF/PF） composite was prepared by compression molding technology after mixing and rolling the treated SF and PF. Effect of surface treatment method on impact strength, bending strength, wear resistance and thermal weightlessness of the composite was studied. And the interface morphology of the composite was observed by GEM. The results show that the interfacial adhesion between SF and PF effectively increased after surface modification. Impact strength of the composite was improved by 34% after alkali method treating of SF. The bending strength was improved by 20% and wear-resistance was improved by 350% after KH-550 method treating of SF. The initial decomposition temperature of the composite increased from 263℃to 280 ℃
出处
《机械工程材料》
CAS
CSCD
北大核心
2010年第3期15-18,共4页
Materials For Mechanical Engineering
基金
广东省自然科学基金资助项目(06301028)
韩山师范学院青年科学基金资助项目(413509)
