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 SEM. The results show that the interracial 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 ℃.
参考文献
| [1] | H. L. BOS;J. MUSSIG;M. J. A. VAN DEN OEVER .Mechanical properties of short-flax-fibre reinforced compounds[J].Composites, Part A. Applied science and manufacturing,2006(10):1591-1604. |
| [2] | 王璐琳,何莉萍,田永,屈伟平.表面处理对剑麻纤维增强聚丙烯复合材料力学性能的影响[J].机械工程材料,2008(05):58-61. |
| [3] | 韦春,牛永亮,牟秋红,钟锦标,杨小王.剑麻纤维/酚醛树脂原位复合材料耐磨性能研究[J].材料科学与工艺,2007(06):835-838. |
| [4] | 何莉萍,田永,吴振军,王璐琳,屈伟平,丁舟波.剑麻纤维增强聚丙烯复合材料的拉伸性能[J].材料科学与工程学报,2008(03):395-399. |
| [5] | 郑学晶,秦树法,马力强,史令茹,汤克勇.剑麻纤维增强胶原基复合材料[J].复合材料学报,2008(03):12-19. |
| [6] | 董瑞玲 .高绝缘高韧性耐热型酚醛塑料的研制[D].西北工业大学,2001. |
| [7] | 韦春,牟秋红,牛永亮,傅裕,陈滔.剑麻纤维/酚醛树脂复合材料的动态力学性能、力学性能和热性能[J].材料科学与工程学报,2005(06):839-842. |
| [8] | 才红.表面改性对剑麻纤维复合材料热性能的影响[J].现代塑料加工应用,2005(02):17-20. |
| [9] | 廖双泉,马凤国,邵自强,廖建和,谭惠民.不同预处理对剑麻纤维组分和结构的影响[J].纤维素科学与技术,2002(02):37-42. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%