玻纤/乙烯基酯复合材料的制备及其盐雾腐蚀行为  

PREPARATION AND SALT SPRAY ATMOSPHERIC CORROSION BEHAVIOR OF GLASS FIBER/VINYL ESTER COMPOSITES

作　　者：瞿立 康少付 李进 程璇[2] QU Li;KANG Shao-fu;LI Jin;CHENG Xuan(Key Laboratory of Ningxia for Photovoltaic Materials,Ningxia University,Yinchuan 750021,China;Key Laboratory of Fujian Province for Special Advanced Materials,Xiamen University,Xiamen 361005,China)

机构地区：[1]宁夏大学宁夏光伏材料重点实验室,银川750021 [2]厦门大学福建省特种先进材料重点实验室,厦门361005

出　　处：《玻璃钢／复合材料》2019年第11期95-99,共5页Fiber Reinforced Plastics/Composites

基　　金：福建省特种先进材料重点实验室资助课题;宁夏回族自治区重点研发项目(2018BDE02048)

摘　　要：我国新建的燃煤火力发电机组大多采用石灰石-湿法脱硫工艺,湿法烟气引起的盐雾腐蚀是导致火电厂烟囱内衬材料脱落的重要因素。本文基于真空辅助成型(VARTM)工艺低成本制造了玻纤/乙烯基酯复合材料,并在盐雾试验箱中分别腐蚀4 d、14 d、28 d和60 d,模拟其在自然盐雾环境下的力学性能变化,分析了复合材料的耐盐雾腐蚀性能,并采用SEM法分析微观机理和腐蚀前后试样表面形貌演化规律。结果表明,经过60 d的盐雾腐蚀,复合材料的力学性能均呈现出先增加后下降的趋势,在盐雾腐蚀60 d后,拉伸强度、弯曲强度、层间剪切强度分别下降了5. 6%、12. 71%、13. 61%。微观形貌表征发现,盐雾腐蚀后树脂基体发生了膨胀开裂,在纤维-树脂界面处形成缺陷进而导致力学性能下降。Limestone wet desulfurization has been mainstream during practical process of coal-fired generating units built in China.However,salt spray take a significant role in detachment of chimney lining materials caused by wet flue gas.In this paper,glass fiber/vinyl ester composites was fabricated based on the low-costing process of vacuum assisted molding(VARTM)process and its mechanical properties was investigated in natural salt spray environment simulated by salt spray testing chamber for 4 days,14 days,28 days and 60 days to evaluate corrosion resistance.Meanwhile,cross-reference of corrosion was observed with the help of SEM to reveal the microscopic mechanism and evolution law of surface morphology.The results show that the mechanical properties of the composites are increased and then decreased with the increase of the days of salt spray corrosion.After 60 days of salt spray corrosion,tensile strength,bending strength and interlaminar shear strength respectively decreased by 5.6%,12.71%and 13.61%.The morphological characterization showed that the resin matrix exploded and cracked after salt spray corrosion,and defects were formed at the fiber-resin interface,which led to a decrease in mechanical properties.

关 键 词：内衬防腐 复合材料 VARTM工艺 盐雾腐蚀 性能分析 

分 类 号：TB332[一般工业技术—材料科学与工程]