接触角法测玄武岩及玻璃纤维表面能实验

邓锐; 李敏; 张佐光; 贾晶晶

接触角法测玄武岩及玻璃纤维表面能实验

北京航空航天大学材料科学与工程学院, 北京 100083

详细信息

中图分类号: TB 332
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出版历程
- 收稿日期: 2006-11-12
- 网络出版日期: 2007-11-30

Surface free energy of basalt and glass fibers by contact angle method

School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

摘要

摘要: 通过Wilhelmy吊片法测试液体与玄武岩、玻璃纤维单丝的前进接触角,应用OWRK理论计算得到纤维表面能及其色散与极性分量.实验研究表明:未经表面处理的玄武岩纤维表面能高于S-2玻璃纤维,去除浸润剂后2种纤维表面能的极性分量均明显降低,并且测试液体的极性分量对纤维表面能的测试结果影响甚大.分析结果为纤维与树脂的表面张力合理匹配、形成良好界面浸润和粘接提供了理论依据.
- 复合材料 /
- 玄武岩纤维 /
- 玻璃纤维 /
- 接触角 /
- 表面能
Abstract: The surface free energies and their dispersion/polar components of basalt and glass fiber were investigated using dynamic contact angle analysis. According to Fowkes′ and Good′s theory,by making use of the contact angle values for monofiber surfaces and standard liquids with known values of surface energy,surface free energy values as well as their components of both fibers were evaluated. It was found that the surface free energy of sized basalt fiber was higher than sized S-2 glass fiber while the polar component of both fibers tended to decrease without sizing; the liquid polarity also influenced the quantity of polar interactions as well as the quantity of dispersion interactions. These results indicate that sizing on the fiber improves wettability and interface adhesion between fibers and resin in fiber reinforced composites.
- composites /
- basalt fiber /
- glass fiber /
- contact angle /
- surface free energy

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