以黄麻纤维(JF)和聚丙烯(PP)为原料,利用混炼和注塑成型的方法制备JF/PP复合材料。考察了碳酸钙、云母粉和硅灰石对JF/PP复合材料力学性能、热稳定性、结晶度和吸水性能的影响,利用扫描电子显微镜(SEM)观察了填料填充前后的JF/PP复合材料拉伸断裂面。结果表明:硅灰石填充的JF/PP复合材料的力学性能最好,其拉伸强度、弯曲强度和弯曲模量分别为26.8MPa、45.3MPa和2658.1MPa,添加填料后,复合材料的热稳定性和吸水率增加,3种填料对复合材料的结晶度影响较小,SEM结果表明,填料能填充复合材料的孔洞结构,使得JF与PP界面相容性提高,其中硅灰石填充的JF/PP复合材料的界面性能最好。
Jute fiber (JF) and polypropylene (PP) were used as raw materials to prepare JF/PP Composites by mixing and injection molding.The effects of calcium carbonate,mica powder and wollastonite on the mechanical properties,thermal stability,crystallinity and water absorption of the JF/PP composites were investigated.The tensile fracture surface of the JF/PP before and after filling was observed by scanning electron microscope (SEM).The results shown that the mechanical properties of JF/PP filled with wollastonite were the best,and the tensile strength,flexural strength and flexural modulus were 26.8MPa,45.3MPa and 2658.1MPa,respectively.After adding fillers,the thermal stability and water absorption of the composites increased,and the three fillers had little effect on its crystallinity.The SEM results shown that the fillers can fill the pore structure of the composites,making the composites more stable.The interface compatibility between JF and PP was improved,and the interface performance of the JF/PP composite filled with wollastonite was the best.
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基金资助
陕西省教育厅重点科研计划项目(20JY051)
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