本文着重介绍几种适用于Kevlar-49/环氧复合材料中纤维体积分数的几种测定方法,并加以比较和评述。 一、化学溶液法 1.二甲基亚砜(简称DMSO)溶液法 这种方法分两步进行,即先使用树脂溶胀剂使树脂发生溶胀,然后再将树脂分解。 首先用做为固化树脂溶胀剂的DMSO溶液,在一定温度下,经过一定时间,使固化的Kevlar-49/环氧复合材料中的树脂发生溶胀。不同的温度及不同的时间,其树脂溶胀度是不 This article focuses on several methods for determining the volume fraction of fibers in Kevlar-49 / epoxy composites, and compares and reviews them. First, the chemical solution method 1. Dimethylsulfoxide (DMSO) solution method This method is carried out in two steps, that is, the first use of the resin swelling agent to swell the resin, and then the resin decomposition. First, the resin in the cured Kevlar-49 / epoxy composite is swollen with a certain period of time with a DMSO solution as a curing resin swelling agent. Different temperatures and different times, the degree of swelling of the resin is not