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为了增强竹塑复合材料力学性能,在传统的偶联剂、温度、竹塑比等的影响因素下,再加入竹纤维来提高传统竹塑复合材料的力学性能。以聚丙烯(PP)为基体材料,运用热压工艺,研究了加入竹纤维对传统竹塑复合材料的力学性能的影响。以偶联剂用量、热压温度、竹粉比例、竹纤维用量为正交因素,用极差分析的方法确定影响材料力学性能的最优配方,结果表明,竹塑比为5:5,钛酸酯偶联剂用量1%,热压温度在190℃,竹纤维用量15g,复合材料冲击强度最大达25.26kJ·m-2,拉伸强度最大达27.81MPa,均优于传统复合材料。因此加入竹纤维能有效的提高复合材料的力学性能。
In order to enhance the mechanical properties of bamboo-plastic composites, bamboo fibers were added to improve the mechanical properties of the traditional bamboo-plastic composites under the influence of the traditional coupling agent, temperature, bamboo-plastic ratio and so on. Using polypropylene (PP) as matrix material, the effects of adding bamboo fiber on the mechanical properties of traditional bamboo-plastic composites were studied by using hot pressing process. The optimal formula that affects the mechanical properties of the material was determined by the method of range analysis with the amount of coupling agent, hot pressing temperature, proportion of bamboo powder and the amount of bamboo fiber as the orthogonal factors. The results showed that the ratio of bamboo to plastic was 5: 5, The amount of ester coupling agent was 1%, hot pressing temperature was 190 ℃, the amount of bamboo fiber was 15g, the impact strength of composite reached 25.26kJ · m-2 and the tensile strength reached 27.81MPa, which were better than the traditional composite materials. Therefore, adding bamboo fiber can effectively improve the mechanical properties of composites.