文献类型：期刊文献

中文题名：玻璃纤维增强聚丙烯复合材料界面结合的研究 2. 界面剪切强度的影响因素及最佳值的判断

英文题名：STUDY ON THE INTERFACIAL BONDING OF GLASS FIBER REINFORCED POLYPROPYLENE COMPOSITE2. EFFECT ELEMENTS ON INTERFACIAL SHEAR STRENGTH AND DETERMINATION OF ITS OPTIMUM

作者：王宏岗[1];郑安呐[1];戴干策[1]

机构：[1]华东理工大学材料工程学院

年份：1999

卷号：16

期号：3

起止页码：51

中文期刊名：复合材料学报

外文期刊名：Acta Materiae Compositae Sinica

收录：CSTPCD;;EI(收录号：2000215121545);Scopus;北大核心:【北大核心1996】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：玻璃纤维;聚丙烯;界面剪切强度;复合材料

外文关键词：critical fragment length of single fiber, glass fiber, polypropylene, interfacial shear strengthalso these cracks extending into matrix do not form. The properties of macroscopic mechanics of the composites collaterally confirm this argument.

摘要：通过单丝临界断裂长度法，研究了聚丙烯（ＰＰ）与玻璃纤维（ＧＦ）间界面剪切强度（ＩＳＳ），发现调节酸酐改性聚丙烯（ＭＰＰ）的加入量，可以相应调整ＩＳＳ；基体熔体与ＧＦ接触时间在８～１０ｍｉｎ以后界面才能结合完全。当ＩＳＳ小于４ＭＰａ时界面结合过弱，纤维在断口处与基体脱粘，形成空管状；ＩＳＳ高于７ＭＰａ时界面结合过强，纤维断口处基体产生垂直于纤维的裂缝，材料变脆；ＩＳＳ在４～７ＭＰａ时界面结合最佳，既不产生明显脱粘，也不产生向基体内扩张的裂缝。
On the basis of the analysis method of the critical fragment length of single fiber, the interfacial shear strength (ISS) of polypropylene (PP) / glass fiber (GF) composites is researched. It is found that adjusting the dosage of anhydride grafted polypropylene (MPP) can effectively change ISS. The interfacial bonding of the composite does not come up to a steady level until the contacting time of the melted PP with the fiber is longer than 810 min. When ISS is smaller than 4 MPa, the interfacial bonding is too weak and the fibers at both sides of the broken point are debonding with the matrix, forming a hollow tube. However, when ISS is higher than 7 MPa, the interfacial bonding is too strong and many cracks form, which lie in the matrix around the broken point of the fiber and in the vertical direction from the fiber axis. The composite becomes brittle. While ISS is among 4 and 7, the interfacial bonding lies in an optimum situation. Not only the debonding at the interface does not generate, but