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环氧树脂和双马树脂的热水老化及弯曲性能研究 被引量:6

Studies of Epoxy Resin and Bismaleimide Resin on Not-water Aging and Bending Properties
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摘要 对环氧和双马树脂进行96℃热水老化处理后,再经60℃恒温干燥脱水处理。分别测量了两个过程的吸水率、脱水率与时间的关系,计算了它们的平衡含水(脱水)量M∞、扩散系数Dx、动力学参数k和n、渗透系数P,阐明了两种树脂的吸水和脱水过程均源于扩散。其次,比较了两种树脂的弯曲性能,实验结果表明经热水老化的两种树脂性能明显降低;干燥脱水能使树脂弯曲性能得到恢复,但依然低于树脂的初始性能。 Epoxy and bismaleimide resins were treated in hot water at 96℃. After that, the resins that reached water-absorption equilibrium were dried at 60℃. The relationships between water-uptake (water loss) and immersed time were measured, and the equilibrium water-absorption (water-desorption) content M_∞, diffusion coefficient D_x, kinetics parameter k,n, and permeability coefficient P was calculated, respectively. The calculated results show that water-absorption (water-desorption) of resins were controlled by diffusion in the range of investigated time. It is found that bending properties of both resins obviously decreased after hot-water aging. Drying contributed to restore the bending properties of resins after aging. However, the bending properties of resins after drying were still lower than those initially.
出处 《航空材料学报》 EI CAS CSCD 2005年第3期37-44,共8页 Journal of Aeronautical Materials
关键词 热水老化 双马树脂 性能研究 环氧树脂 弯曲性能 动力学参数 老化处理 脱水处理 恒温干燥 扩散系数 渗透系数 脱水过程 树脂性能 吸水率 脱水率 hot-water aging water-absorption water-desorption bending properties epoxy and bismaleimide
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参考文献18

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