摘要
采用熔融共混和注塑成型的方法制备了硅烷偶联剂处理的剑麻短纤维(SF)增强聚丙烯(PP)的复合材料,研究了SF表面偶联剂处理对复合材料的晶形结构、微观结构、热性能及力学性能的影响.结果表明硅烷处理削弱了SF在PP结晶过程中的异相成核作用,降低了SF/PP复合材料中PP相的结晶度、结晶温度和结晶速率;提高了复合材料中β-晶型PP的相对含量;增强了SF/PP的界面键合,显著提高了复合材料的冲击强度.
After sisal fibers (SF) surface modification was carried out with silane coupling agent, the SF were melt blended with polypropylene (PP) and then injection molded. The PP/SF composites were characterized by means of DSC analysis, mechanical testing, wide - angle X - ray diffraction, and SEM examination. The results showed that SF surface treatment with silane decreased the crystallization temperature, crystallization rate and degree of crystallinity of the PP in SF/PP composites, increased the relative amount of the β - form of PP crystals, improved the interfacial interaction between the reinforcing SF and PP matrix. It leaded to the improvement in the Izod impact strength of composites.
出处
《材料科学与工艺》
EI
CAS
CSCD
北大核心
2005年第3期329-333,共5页
Materials Science and Technology
基金
国家自然科学基金资助项目(10172037)
香港特别行政区RGC资助项目(9040422)
