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研究了玻璃纤维对γ-十一烯酰氧基丙基三甲氧基硅烷(γ-UTMS)水解物的吸附特征、经γ-UTMS处理后的纤维表面特性及所制得的复合材料的力学特性。证实了上述吸附为多分子层吸附,处理后所得的纤维表面具有良好的憎水性及对不饱和聚酯的浸润性。作为偶联剂使用,宜采用1wt%的γ-UTMS水解液,处理时间为2分钟左右。由此所得的GFRP的抗拉强度可提高15%;由于长链的变形能力,使得界面层对能量的吸收能力提高,致使复合材料的抗冲能力可提高近20%。
The adsorption characteristics of γ-undecylenyloxypropyltrimethoxysilane (γ-UTMS) by glass fiber were studied. The surface properties of the fibers after γ-UTMS treatment and the mechanical properties of the composites . It is confirmed that the adsorption is multi-molecular layer adsorption, and the treated fiber surface has good hydrophobicity and impregnation to unsaturated polyester. As a coupling agent, should be used 1wt% γ-UTMS hydrolyzate, treatment time is about 2 minutes. The tensile strength of the resulting GFRP can be increased by 15%. Due to the long-chain deformability, the energy absorption capacity of the interfacial layer is increased, resulting in an improvement of the impact resistance of the composite by nearly 20%.