玻璃纤维/不饱和聚酯微孔复合材料的制备研究

Study on Preparation of Glass Fiber/Unsaturated Polyester Microcellular Composite

用超饱和气体法制备了玻璃纤维/不饱和聚酯微孔复合材料。考察了保压时间对微孔复合材料泡孔直径及泡孔密度的影响,并对固化反应进行了动力学分析。结果表明:I阶段保压时间对泡孔直径及泡孔密度的影响大于II阶段保压时间;I、II阶段的最佳保压时间均为30min;在固化反应过程中,随着固化剂活性、固化剂浓度、不饱和聚酯分子中双键的浓度和反应温度的升高,固化反应速率升高。

The glass fiber/unsaturated polyester microcellular composite was prepared by super-saturated gas technology. The effects of packing time on cell diameter and cell density were studied. The reaction kinetics of the curing reaction was analyzed. The results indicate： the effect of packing time at stage I on cell diameter and cell density is greater than that of the packing time at stage II; the optimum packing time at both stage I and stage II is 30min; during the curing reaction, with the increase of curing agent activation, curing agent concentration, concentration of double-key in unsaturated polyester, and reaction temperature, the curing reaction rate increases.