摘要
利用亚麻纤维作为增强体,与热塑性聚丙烯(PP)纤维进行混合,同时与PP长丝形成PP包覆亚麻的纱线结构,并利用机织工艺织成二维机织布作为复合材料的预制件,采用层合热压方法制备亚麻/聚丙烯复合材料板材.通过对板材弯曲性能测试,研究了不同制备工艺、不同纱线结构以及不同纤维质量分数等因素对复合材料弯曲性能的影响.结果表明,"三明治"铺层方法制备的板材较"混纤法"制备的板材体现出更优良的弯曲机械性能;与加捻纱相比,包覆纱结构热塑性复合材料表现出更优越的弯曲性能;以亚麻/聚丙烯包覆纱为增强体的复合材料,亚麻纤维质量分数为43.5%的板材性能最优良.
Flax fiber was used as reinforcing material to commingle with polypropylene （PP） fiber to realize the mixture of two materials at the stage of yam. Meanwhile, PP filaments were introduced to produce a core-spun yam with flax/PP as core and PP filament as outer sheath. The commingled yams were woven into 2-D fabric which was used as the prefabricated material. The composite laminates were prepared by hot press technology. The effects of manufacture technology, yam structure and fiber weight fraction on flexural properties of composites were investigated through analyzing the flexural testing results. The results show that the properties of composites made by sandwich stacking method are better than the properties of composites made by fiber blending method, and wrap yarns demonstrate a significant improvement over twisted yarns when they are used in the manufacture of composites. When flax/PP wrap yarns are involved in the process of composite lamination,43.5% of flax fiber fraction is considered the best ratio as far as flexural properties are concerned.
出处
《天津工业大学学报》
CAS
北大核心
2009年第3期6-9,共4页
Journal of Tiangong University
关键词
亚麻纤维
聚丙烯
机织
热压
弯曲性能
flax fiber
polypropylene （PP）
weaving
hot press
flexural properties
