增容剂对HDPE/UHMWPE/纳米HA生物复合材料性能的影响  

Effect of Compatibilizers on Properties of HDPE/UHMWPE/Nano-hydroxyapatite Biomaterial Composite

作　　者：沈惠玲[1] 张娜[1] 

机构地区：[1]天津科技大学材料科学与化学工程学院,天津300457

出　　处：《塑料科技》2011年第1期99-103,共5页Plastics Science and Technology

摘　　要：通过熔融共混法制备了高密度聚乙烯/超高分子量聚乙烯/纳米羟基磷灰(石HDPE/UHMWPE/纳米HA)生物复合材料,研究了增容剂三元乙丙橡胶接枝马来酸(酐EPDM-g-MAH)和聚烯烃弹性体接枝马来酸酐(POE-g-MAH)对复合材料力学性能的影响,并利用红外光谱、扫描电镜、热重分析仪及熔体流动速率仪表征了复合材料的微观结构、热性能和流动性能。结果表明:EPDM-g-MAH和POE-g-MAH均可提高HDPE/UHMWPE/纳米HA复合材料的相容性,其中EPDM-g-MAH的增容效果更明显;随着增容剂用量的增大,复合材料的熔体流动速率、热变形温度和热稳定性逐渐下降;与添加POE-g-MAH相比,含有EPDM-g-MAH的复合材料的综合性能较好。The biomaterial composites of HDPE/UHMWPE/nano-hydroxyapatite（nano-HA） were prepared by means of melt blending.The effects of compatibilizers（EPDM-g-MAH and POE-g-MAH） on mechanical properties of HDPE/UHMWPE/nano-HA composite were investigated.The microstructure,melt flowability and thermal stability of the composite were characterized by IR,SEM,TGA and MFR.The results show that both EPDM-g-MAH and POE-g-MAH can improve the compatibility of HDPE/UHMWPE/nano-HA composite,wherein the compatibilization effect of EPDM-g-MAH is better;with the increase of compatibilizer content,the MFR,heat deflection temperature and thermal stability of the composite decrease;compared with the addition of POE-g-MAH,the comprehensive properties of HDPE/UHMWPE/nano-HA composite added with EPDM-g-MAH is better.

关 键 词：高密度聚乙烯 超高分子量聚乙烯 纳米羟基磷灰石 增容剂 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]