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提出了采用线性回归处理分析玻纤与浸润液体动态润湿的新方法,结合高精度电子天平,表征了玻纤表面动态润湿性能。研究结果表明:在玻纤表面动态润湿过程中,随着润湿速度的增加,动态接触角有增大的趋势,玻纤与去离子水、乙二醇、760E环氧、CYD128环氧的接触角分别由66.04°、42.21°、51.31°、73.90°增加到69.05°、46.95°、74.58°、170.06°,玻纤表面可润湿性能下降。玻纤表面动态润湿过程中,黏度越大,随着润湿速度增加,可润湿性能下降越快,即玻纤与CYD128环氧体系的接触角下降96.16°,而与760E环氧树脂和乙二醇的接触角下降分别为23.27°和4.74°。基于新方法的玻纤表面动态润湿系统中,玻纤所受作用力随三相接触线移动速率和浸润液体黏度的增加而增大。
A new method to analyze the dynamic wetting of glass fiber and infiltrating liquid by linear regression is proposed. The dynamic wetting property of glass fiber is characterized by high precision electronic balance. The results show that the dynamic contact angle tends to increase with the increase of wetting speed during the dynamic wetting process of glass fiber. The glass fiber is mixed with deionized water, ethylene glycol, 760E epoxy, CYD128 epoxy The contact angles increased from 66.04 °, 42.21 °, 51.31 ° and 73.90 ° to 69.05 °, 46.95 °, 74.58 ° and 170.06 °, respectively. The wettability of glass fiber surface decreased. During the process of dynamic wetting of glass fiber, the higher the viscosity, the faster the wettability decreases with the increase of wetting speed, that is, the contact angle between glass fiber and CYD128 epoxy system decreases by 96.16 °, while the contact angle with 760E epoxy resin and The contact angles of ethylene glycol decreased by 23.27 ° and 4.74 °, respectively. Based on the new method, the force applied to glass fiber increases with the moving speed of the contact line and the viscosity of the infiltrated liquid.