玻璃纤维增强环氧复合材料耐海水性能研究进展

摘要/Abstract

摘要： 综述了玻璃纤维增强环氧复合材料(GFRP)耐海水(SW)性能进展,讨论了随浸泡时间的变化其吸水率和力学性能的变化,并探讨了海水浸泡对GFRP性能的影响因素和腐蚀机理。结果表明:GFRP纤维体积分数、制备工艺、水质和温度等因素均对GFRP的吸水率和力学性能有较大影响;海水中所含的酸、碱、盐等化学物质及微生物将导致GFRP物理和化学降解损坏。此外,老化初期,水分在GFRP中塑化溶胀产生的积极作用和腐蚀引起的结构破坏的双重作用机制导致材料力学性能存在波动。

关键词: GFRP, 吸水率, 海水老化, 力学性能, 界面脱粘

Abstract: Benefiting from good mechanical properties, excellent corrosion resistance and light weight property, glass fiber reinforced polymer composites are recommended for use in marine infrastructures. However, the poor marine environment accelerates the corrosion of composites, which can easily result in the deterioration of material properties. In this paper, the seawater (SW) ageing of epoxy/glass fiber composites(GFRP) was summarized. The changes of water absorption and mechanical properties with immersion time were discussed, and the influence factors and corrosion mechanism of seawater immersion corrosion were analyzed. The results show that temperatures, preparation crafts, water species and fiber volume fraction of GFRP have great influence on the water absorption and mechanical properties of GFRP. Water and chemical substances, such as acids, bases, salts, and microbes contained in seawater, will lead to the physical and chemical degradation of GFRP. In addition, water creates a dual mechanism of positive effect by plasticizing and swelling and negative structural damage caused by corrosion, which leads to the fluctuation of mechanical properties of GFRP in the early stage of aging.

Key words: GFRP, water absorption, seawater aging, mechanical property, interfacial debond

中图分类号:

TB332

陈尚能, 申明霞, 曾少华, 陆凤玲. 玻璃纤维增强环氧复合材料耐海水性能研究进展[J]. 玻璃钢/复合材料, 2019, 0(2): 108-114.

CHEN Shang-neng, SHEN Ming-xia, ZENG Shao-hua, LU Feng-ling. DEVELOPMENT OF SEAWATER RESISTANT OF FRP EPOXY COMPOSITES[J]. Fiber Reinforced Plastics/Composites, 2019, 0(2): 108-114.

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