海洋环境下碳纤维增强复合材料片材的耐久性

Durability of Carbon Fiber Reinforced Polymer(CFRP)Sheet under Marine Environment

摘要:

模拟研究了海洋环境(盐水浸渍、盐溶液干湿循环、冻融循环单独或耦合作用)下碳纤维增强复合材料(CFRP)片材的耐久性.结果表明:在海洋环境中快速老化后,CFRP片材的应力-应变关系仍呈典型的线性关系;CFRP片材抗拉强度下降幅度最大,延伸率次之,弹性模量最小;多因素耦合作用对CFRP片材抗拉强度和弹性模量的影响远远大于单一因素作用.

Abstract:

Durability of CFRP sheet was studied in simulative way under marine environment(such as single factor effect and multi-factor combined effects of salt solution immersion,wet and dry cycles in salt solution,freeze and thaw cycles).The results show that after fast aging under marine environment the relation between stress and strain of CFRP sheet still show typical linearity.The tensile strength of CFRP sheet decreases greatly,the elongation decreases even more greatly whereas the elastic modulus decreases slightly.The multi-factor combined effects on tensile strength and elastic modulus of CFRP sheet are stronger than single factor effect.