本文選題：超高分子量聚乙烯 + 低密度聚乙烯��； 參考：《材料科學與工藝》2017年01期

【摘要】：為實現(xiàn)聚乙烯單聚合物復合材料(PE SPC)的嵌件注射成型,研究基體與增強體間的界面非常關鍵.本文采用超高分子量聚乙烯(UHMWPE)纖維增強低密度聚乙烯(LDPE)基體,對纖維和基體進行了差示掃描量熱儀測試,在偏光顯微鏡下模擬了基體與纖維的復合過程,研究不同因素對復合材料界面結(jié)晶形態(tài)的影響.根據(jù)DSC確定了UHMWPE和LDPE復合的溫度范圍在110.98~147.14℃;合適的溫度和剪切作用都有利于界面橫晶的產(chǎn)生,從而使基體和纖維產(chǎn)生更好的粘結(jié),提高復合材料的力學性能;溫度比剪切的影響更大,注射溫度設置在125~135℃可在保證纖維與基體復合的情況下不破壞纖維的增強作用;纖維絲之間會相互影響界面結(jié)晶形態(tài),部分界面有橫晶產(chǎn)生,說明在實際注射成型過程中纖維束或纖維布的結(jié)構(gòu)對基體滲透和界面形成有較大影響.
[Abstract]:In order to realize the injection molding of PE SPC, it is very important to study the interface between matrix and reinforcement. In this paper, UHMWPE fiber reinforced LDPE matrix was used to measure the fiber and matrix by differential scanning calorimeter (DSC). The composite process of matrix and fiber was simulated under polarizing microscope. The effect of different factors on the interfacial crystalline morphology of composites was studied. According to DSC, the composite temperature range of UHMWPE and LDPE is 110.98 ~ 147.14 鈩，

本文編號：1855977