摘要
通过辐照法将马来酸酐(MAH)基团接枝到聚苯醚(PPE)上,制备了PPE-g-MAH,将其和聚酰胺(PA)66通过熔融共混挤出方法制备了PPE-g-MAH/PA66共混物。采用差示扫描量热、吸水性实验、维卡软化和热变形实验、拉伸和冲击性能测试及动态力学性能测试等对PPE-g-MAH/PA66共混物性能进行了研究。结果表明,与PPE/PA66共混物相比,PPE-g-MAH/PA66共混物的耐热性能、力学性能和吸水性能均得到改善;随PPE-g-MAH含量的增加,PPE-g-MAH/PA66共混物中PA66的熔融温度和玻璃化转变温度均向PPE方向移动,表明两者的相容性有所提升,且共混物的维卡软化温度、热变形温度、25℃之前的储能模量均升高,吸水率降低;当PPE-g-MAH含量较低时,共混物拉伸强度提升明显而冲击强度升幅较小,当PPE-g-MAH含量较高时,共混物冲击强度提升明显而拉伸强度基本不变。因此,可以根据实际的应用要求选择合适的PPE-g-MAH含量。
PPE-g-MAH was prepared by grafting MAH onto poly（phenylene ether） （PPE） using pre-irradiation method. ThePPE-g-MAH/polyamide（PA） 66 blends were prepared by molten extrusion using PPE-g-MAH and PA66. Properties of PPE-g-MAH/PA66 blends were investigated by DSC,water absorption experiment,the Vicat softening temperature and thermal deformationtemperature experiment,tensile and impact measurement and dynamic mechanical properties tests. The results show that comparingwith PPE/PA66 blends,the heat resistance,mechanical properties,water absorption of PPE-g-MAH/PA66 blends are improved.With the content of PPE-g-MAH increasing,the melting temperature and glass-transition temperature of PA66 in PPE-g-MAH/PA66 blends move to PPE,which indicates the compatible of PPE-g-MAH and PA66 is better. The Vicat softening temperature,thermal deformation temperature and the storage modulus before 25℃ of the blends increase,the water absorption decreases. Whenthe content of PPE-g-MAH is low,the tensile strength of the blend increases obvious but impact strength increases a little,whenthe content of PPE-g-MAH is high,the impact strength of the blend increases obvious but tensile strength has no change basically.Therefore,the suitable content of PPE-g-MAH can be chosen according to the practical application.
出处
《工程塑料应用》
CAS
CSCD
北大核心
2016年第8期41-45,共5页
Engineering Plastics Application
基金
吉林省与中国科学院科技合作高技术产业化项目(2015SYHZ0012)
关键词
接枝
增容
聚苯醚
聚酰胺66
力学性能
耐热性能
吸水率
grafting
compatibilization
poly（phenylene ether）
polyamide 66
mechanical property
heat resistance
water absorption
