| UHMWPE/PLA共混体系的制备 |
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| 引用本文： | 李晓梅,周威,蒋涛.UHMWPE/PLA共混体系的制备[J].合成树脂及塑料,2008,25(2):11-15. |
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| 作者姓名： | 李晓梅 周威 蒋涛 |
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| 作者单位： | 湖北大学材料科学与工程学院,武汉,湖北,430062 |
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| 摘 要： | 利用熔融共混法制备了超高相对分子质量聚乙烯(UHMWPE),聚乳酸(PLA)共混体系,讨论了PLA含量对共混体系熔体流动性能、力学性能、结晶性能及吸水性能的影响.结果表明:随PLA含量的增加,UHMWPE/PLA共混体系的熔体流动性显著增强;体系收缩率下降,尺寸稳定性变好;屈服拉伸强度和缺口冲击强度下降,断裂由韧性断裂逐渐转变为脆性断裂;当w(PLA)为10%时,所制备的共混体系既能保证UHMWPE原有的缺口冲击强度和韧性断裂,又具有较好的熔体流动性能;PLA与UHMWPE共混可加快共混体系的结晶速率,使熔点下降;随着PLA含量的增加,共混体系的吸水率也随之增加.
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| 关 键 词： | 超高相对分子质量聚乙烯 聚乳酸 熔融共混 |
Preparation of UHMWPE/PLA blends |
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| Li Xiaomei,Zhou Wei,Jiang Tao.Preparation of UHMWPE/PLA blends[J].China Synthetic Resin and Plastics,2008,25(2):11-15. |
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| Authors: | Li Xiaomei Zhou Wei Jiang Tao |
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| Affiliation: | Li Xiaomei Zhou Wei Jiang Tao (Faculty of Materials Science , Engineering,Hubei University,Wuhan 430062,China) |
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| Abstract: | The authors of this article prepared a blend system consisting of ultrahigh molecular weight polyethylene and polylactic acid (UHMWPE/PLA) and discussed the influences of PLA content on melt flow rate (MFR), mechanical properties,crystallinity and water absorption of the blend.The results show that there appears a remarkable enhancement in melt flowability,a drop in shrinkage and an improvement in dimension stability and a reduction in tensile yield strength and notched charpoy impact strength of the blend ... |
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| Keywords: | ultrahigh molecular weight polyethylene polylactic acid melt blending |
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