RTM用双马来酰亚胺树脂及其复合材料的制备与性能研究

发布时间：2018-01-09 01:07

本文关键词：RTM用双马来酰亚胺树脂及其复合材料的制备与性能研究　出处：《玻璃钢/复合材料》2017年10期 　论文类型：期刊论文

【摘要】：采用一种含醚键双马单体对双马来酰亚胺树脂进行改性,制备了一种适用于复合材料树脂转移模塑成型工艺(RTM)的高韧性双马来酰亚胺树脂基体,并研究了其流变特性、耐热性能、力学性能及其复合材料的力学性能。树脂体系的流变性能数据表明树脂在注射温度(100℃)下具有较长的适用期(~3 h),能够满足RTM成型的要求。树脂浇注体的拉伸强度为115 MPa,断裂延伸率为3.1%,弯曲强度为159 MPa,玻璃化转变温度为270℃,表明树脂具有较高的韧性和耐温等级。以本树脂体系作为基体制备得到的碳纤维增强复合材料具有较高的力学性能,同时在230℃下具有较高的力学性能保持率。
[Abstract]:Using a bismaleimide containing ether bond monomer of bismaleimide resin was modified, prepared for composite resin transfer molding (RTM) high toughness bismaleimide resin matrix, and its rheological properties of heat resistance, mechanical properties and mechanical properties of the composite materials the rheological properties of the resin system. The data show that in the resin injection temperature (100 DEG C) for the period is longer (~3 h), to meet the requirements of molding. The tensile strength of RTM resin was 115 MPa, the elongation rate is 3.1%, the flexural strength is 159 MPa, the glass transition temperature of 270 DEG C that shows that the resin has high tenacity and high temperature grade. To the resin system as the mechanical properties of composite materials with high carbon fiber prepared by coating was enhanced, and has high mechanical properties at 230 DEG C retention rate.

【作者单位】：中航复合材料有限责任公司;中航工业复合材料技术中心;先进复合材料重点实验室;
【分类号】：TB332;TQ323.7
【正文快照】： 1前言复合材料树脂转移模塑成型(RTM)工艺可实现复杂复合材料结构的近净尺寸整体成型,尺寸精度高,同时可大幅度降低紧固件的使用量,提高复合材料结构一体化程度。目前用于先进树脂基复合材料的树脂基体主要有环氧树脂、双马来酰亚胺树脂(BMI)和聚酰亚胺树脂。BMI树脂作为一种

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