摘要
利用双螺杆挤出机制备了聚丙烯（PP）／热塑性聚氨酯弹性体（PuR—T）共混材料，研究了这类共混材料经1～25kGy剂量的γ射线辐照前后的力学性能、动态力学行为与形态。发现在空气气氛下经γ射线（尤其是剂量为5kGy）辐照后，PP／PUR-T（85／15）体系的界面粘结得到了明显改善，其拉伸强度、弯曲强度、弯曲弹性模量及缺口冲击强度均比未辐照时有明显提高，表明γ射线辐照对PP／PUR-T共混材料有增容作用。
polypropylene/ thermoplastic polyurethane （ PP/PUR-T） blends were prepared with co-rotating twin screws extru- der. The mechanical properties, dynamic mechanical behavior （DMA） and morphology of the γirradiated blends were investigated. It was found that the interface adhesive of the PP/PUR-T （85/15） was improved, and the tensile strength, flexural modulus （and strength） and notched impact strength of the blends were increased after being γ irradiated in air, especially when the radiation dose was 5 kGy. It was showed that the compatibility of the PP/PUR-T could be improved by γradiation.
出处
《工程塑料应用》
CAS
CSCD
北大核心
2007年第12期43-45,共3页
Engineering Plastics Application
关键词
聚丙烯
热塑性聚氨酯弹性体
Γ射线辐照
性能
形态
polypropylene, thermoplastic polyurethane, γradiation, property, morphology
