DURABILITY OF UNSATURATED POLYESTER RESIN BASED AND EPOXY VINYL ESTER RESIN BASED GLASS FIBER-REINFORCED PLASTICS COMPOSITES

Abstract

Abstract: In recent years, GFRP composites are gradually used to wrap ocean engineering structures, which act as substitutes of anti-corrosion paints or coatings, working as protective layers to prolong the service life of these ocean engineering structures. In order to research the durability of GFRP composites in ocean environment, hydrothermal aging, freeze-thaw aging and ultraviolet aging were adopted to study the corrosion behavior of glass fiber-reinforced plastics composites in ocean environment. The mass variation rate, retention rate of bending strength and SEM were used to analyze the corrosion mechanism and durability of 189 unsaturated polyester resin based and MFE-2 epoxy vinyl ester resin based glass fiber-reinforced plastics (GFRP) composites. The results show that the number of ester group on the resin molecular chain is the main factor that affects the durability of GFRP composites in ocean environment. The number of ester group on the MFE-2 epoxy vinyl ester resin molecular chain is about 1/3 of the 189 unsaturated polyester resin. To be concludes, the MFE-2 GFRP possesses better durability in ocean environment.

Key words: unsaturated polyester resin, epoxy vinyl ester resin, glass fiber-reinforced plastics composites, seawater corrosion resistance

CLC Number:

TB332

NIE Ya-nan, MA Dong-yang, WANG Cheng-qi. DURABILITY OF UNSATURATED POLYESTER RESIN BASED AND EPOXY VINYL ESTER RESIN BASED GLASS FIBER-REINFORCED PLASTICS COMPOSITES[J]. COMPOSITES SCIENCE AND ENGINEERING, 2015, 0(11): 53-58.

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