玻璃钢复合材料耐海水腐蚀性能及抗Cl-渗透寿命预测 后印本

Краткое изложение: The anti-corrosion performance of glass fiber reinforced plastic (GFRP) composites was evaluated by immersion test in 3.5% (mass fraction) sea salt solutions at 70 ℃ in terms of the decreasing trend of the pH value of the solution, the mass variation rate, and the bending strength retention rate of GFRP composites with time. While the surface morphology of the fractured surface of the composites, especially the glass fiber/resin interface before and after corrosion was examined by SEM. The concrete sample wrapped with GFRP composites was used to examine the timewhen Cl- penetrated through the GFRP layer. And, the life of resistance to Cl- penetration of 2 mm thick GFRP composites was predicted. Results showed that the life of resistance to Cl- penetration for the unsaturated ester based GFRP composite was about 30 a; while the epoxy vinyl ester based GFRP composite was about 70 a.