以玻璃纤维增强复合材料的腐蚀理论为基础,模拟海水环境,研究环氧乙烯基不饱和聚酯树脂（901树脂）浇铸体和GFRP的吸湿特性,对GFRP在不同介质盐度下拉伸性能、弯曲性能、抗冲击性能和巴士硬度的演变规律进行试验探索,通过扫描电镜观察分析了材料表观状况、微观结构的变化,并在湿热环境下研究基体与纤维之间膨胀系数不匹配和复合材料层间剪切性能.试验结果表明,GFRP的吸湿呈现＂两阶段吸湿＂规律;拉伸强度、弯曲强度、冲击强度和巴士硬度均呈现总体下降但有起伏的趋势;断口形貌分析表明,GFRP腐蚀后基体和纤维均呈现脆性断裂形式.
Based on the basic theories of glass fiber reinforced plastic compound material（GFRP）,this study investigates the corrode approaches and processing as it is being used in the marine environment.Firstly the moisture absorption of EPOXY vinyl ester matrix and GFRP is studied,and then the aged specimens＇mechanical properties including tensile strength,flexural strength,impact strength and Barcol hardness are tested for recognizing the law and corruption mechanisms.The surface morphology and micro-morphology are observed by Scanning electron microscope（SEM）.Test results show that the corrosion of polymer and composites materials is a relaxation process.Moisture infiltration of matrix followed Fick No2 law,and with the increasing of the salinity,the D is decreased.The mismatch behavior between fiber and matrix and the shear properties of GFRP were studied and the aging mechanism and evolution change in mechanical properties of 901 polymer and GFRP were investigated in sea water.
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