超声波对γ射线辐照高密度聚乙烯/绢英粉体系力学性能的影响  

THE EFFECT OF ULTRASONIC IRRADIATION ON THE MECHANICAL PROPERTIES OF γ-RAY IRRADIATED HDPE/STC BLENDS

作　　者：范萍[1] 徐闻[1] 刘鹏波[1] 马学军[1] 

机构地区：[1]高分子材料工程国家重点实验室四川大学高分子研究所,四川成都610065

出　　处：《高分子材料科学与工程》2004年第2期148-150,154,共4页Polymer Materials Science & Engineering

基　　金：国家重点基础研究专项经费(G1999064809);国家教育委员会重点科学技术项目(20034006)

摘　　要：采用γ射线在空气中对高密度聚乙烯(HDPE)进行辐照,在其分子链上引入了含氧极性基团,改善了HDPE与无机填料绢英粉(STC)共混体系的界面相互作用,大幅度提高了γ射线辐照HDPE(γ-HDPE)/STC/界面改性剂体系的力学性能。在此基础上,通过超声波处理绢英粉/界面改性剂浆料,利用超声波强大的分散功能使团聚的STC粒子得到良好的解团聚、分散,界面改性剂能更有效地包覆STC,使其在γ-HDPE基体中得到良好的分散,进一步提高了γ-HDPE/STC/界面改性剂体系的力学性能。Some oxygen-containing polar groups were introduced onto the molecular chains of HDPE through γ-ray irradiation. The interfacial adhesion between irradiated HDPE (γ-HDPE) and interface modifier treated Sericite-tridymite-cristobalite(t-STC) was strengthened, the mechanical properties of γ-HDPE/t-STC blend was thus improved greatly. Through ultrasonic irradiation of STC suspension (u-STC), the mechanical properties of γ-HDPE/STC blend are further improved. The elongation at break, yield and impact strength of γ-HDPE/STC(60/40) are increased to 340%, (29.4) MPa, (74.5) J/m from 128%, (27.4) MPa, (58.1) J/m, respectively.

关 键 词：超声波 Γ射线 聚乙烯/绢英粉体 HDPE 含氧极性基团 改性剂 

分 类 号：O631.21[理学—高分子化学] TB559[理学—化学]