改性椰纤维增强聚乳酸复合材料力学性能
发布时间：2018-08-04 17:43
【摘要】：目的添加适量椰纤维(CF)改善聚乳酸(PLA)的力学性能,以适应产品的包装。方法采用熔融共混法制备不同CF含量的CF/PLA复合材料。通过力学性能测试、扫描电子显微镜观察和动态热力学性能测试,探讨添加不同含量的碱洗CF对复合材料力学性能的影响。结果与纯PLA相比,复合材料的拉伸强度降低,冲击强度增大,储能模量增大,玻璃化转变温度降低。当碱洗CF质量分数为3%时,复合材料的冲击强度比纯PLA增加了24%。结论添加CF有利于提高复合材料的力学性能,碱液浸泡更有利于改善CF和PLA基体的界面相容性。
[Abstract]:Objective to improve the mechanical properties of polylactic acid (PLA) by adding proper amount of coconut fiber (CF). Methods CF/PLA composites with different CF content were prepared by melt blending method. The effects of alkali washing CF on the mechanical properties of composites were investigated by means of mechanical properties test, scanning electron microscopy (SEM) observation and dynamic thermodynamics test. Results compared with pure PLA, the tensile strength, impact strength, storage modulus and glass transition temperature of the composites decreased. When the alkali washing CF content is 3, the impact strength of the composite is 24% higher than that of pure PLA. Conclusion the addition of CF can improve the mechanical properties of the composites, and the soaking of alkali solution can improve the interfacial compatibility between CF and PLA matrix.
【作者单位】： 哈尔滨商业大学;
【基金】：国家十二五科技支撑计划(2011BAD24B01-3) 哈尔滨市科技研发资金(2014RFXXJ057) 哈尔滨商业大学研究团队支持项目(2016TD005)
【分类号】：TB332
本文编号：2164627
[Abstract]:Objective to improve the mechanical properties of polylactic acid (PLA) by adding proper amount of coconut fiber (CF). Methods CF/PLA composites with different CF content were prepared by melt blending method. The effects of alkali washing CF on the mechanical properties of composites were investigated by means of mechanical properties test, scanning electron microscopy (SEM) observation and dynamic thermodynamics test. Results compared with pure PLA, the tensile strength, impact strength, storage modulus and glass transition temperature of the composites decreased. When the alkali washing CF content is 3, the impact strength of the composite is 24% higher than that of pure PLA. Conclusion the addition of CF can improve the mechanical properties of the composites, and the soaking of alkali solution can improve the interfacial compatibility between CF and PLA matrix.
【作者单位】： 哈尔滨商业大学;
【基金】：国家十二五科技支撑计划(2011BAD24B01-3) 哈尔滨市科技研发资金(2014RFXXJ057) 哈尔滨商业大学研究团队支持项目(2016TD005)
【分类号】：TB332
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