剑麻纤维/酚醛树脂原位复合材料耐磨性能研究

Wear resistance properties of sisal fiber/phenol formaldehyde in-situ composites

为了探讨剑麻纤维对复合材料耐磨性能的影响,采用聚合填充工艺,通过模压成型方式制成剑麻纤维/酚醛树脂(SF/PF)原位复合材料.考察了SF的表面处理方式、用量、长度以及同玻璃纤维(GF)混杂增强与复合材料耐磨性能的关系;用扫描电镜(SEM)对材料磨损的表面形态结构进行了研究.结果表明,SF的用量和长度对材料的耐磨性能有一定影响,合适的用量和长度是得到高耐磨性能复合材料的必要条件,GF与SF混杂后材料的耐磨损性能随着SF用量的增加而增加;SEM揭示了复合材料相应的磨损机理.SF表面处理后复合材料的耐磨性能得到了显著提高.

In order to study the influence of sisal fiber （SF） on the wear resistance properties of composites, a novel blending style--polymerization-filling was introduced for SF/phenol formaldehyde （PF） in-situ composites, which was prepared by compression molding. The effects of SF surface modification, the content, the length and the hybrid with glass fiber on wear resistance of SF/PF in-situ composites were systematically investigated. And the wear surface of the composites was characterized by the scanning electron microscopy （SEM）. Based on that the wear mechanism was analyzed. Results show that the content and the length of SF have a certain effect on wear resistance and the appropriate content and length are necessary for improving wear resistance. Moreover, the addition of glass fiber （SF） results in reduction of wear resistance and SEM reveals corresponding wear mechanism of SF/PF in-situ composites. Wear resistance properties of the composites are improved notably by adding modified SF.