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首页> 外文期刊>Journal of Adhesion Science and Technology: The International Journal of Theoredtical and Basic Aspects of Adhesion Science and Its Applications in All Areas of Technology >Adsorption of #gamma#-UPS silane onto E-glass fibers from aqueous solutions
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Adsorption of #gamma#-UPS silane onto E-glass fibers from aqueous solutions

机译：水溶液将＃γ＃-UPS硅烷吸附到电子玻璃纤维上

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摘要

The deposition of #gamma#-ureidopropyltrimethoxysilane (#gamma#-UPS) from aqueous solutions onto plasma-treated E-glass fibers was investigated over a wide range of concentrations and pH chosen, the silane was shown to form a surface consisting of silanols. At high concentrations, the silane was shown to form a different surface, consisting of condensed Si-O-Si groups. The ureidosilane thus produced a hydrophobic surface at high concentrations. Osterholtz and Pohl demonstratedthat condensation of #gamma#-APTES (#gamma#-amino-propyltriethoxysilane) increased rapidly between pH 6 and 7, and that the hydrolysis was slow. This pH range corresponds to the most extensive adsorption of #gamma#-UPS onto the E-glass surface, as judged from water contact angle, mass loss, and SEM results. The silane was deposited as patches onto the E-glass fibers. At the higher solution concentrations, an outer surface or 'skin' was formed over these patches, giving the appearance of completely siloxane polymer-coated fibers. The structure under the outer surface was open and porous.
机译：在很宽的浓度和所选择的pH范围内，研究了＃γ＃-脲基丙基三甲氧基硅烷（＃gamma＃-UPS）从水溶液到等离子体处理过的E玻璃纤维上的沉积，显示硅烷形成了由硅烷醇组成的表面。在高浓度下，显示硅烷形成不同的表面，该表面由稠合的Si-O-Si基团组成。因此，脲基硅烷在高浓度下产生疏水表面。 Osterholtz和Pohl证明，在pH值6和7之间，＃γ＃-APTES（＃γ＃-氨基-丙基三乙氧基硅烷）的缩合迅速增加，并且水解缓慢。根据水接触角，质量损失和SEM结果判断，此pH范围对应于＃gamma＃-UPS在电子玻璃表面上的最广泛吸附。硅烷以贴剂的形式沉积在E玻璃纤维上。在较高的溶液浓度下，在这些贴剂上形成了外表面或“表皮”，从而呈现出完全覆盖了硅氧烷聚合物的纤维。外表面下的结构是开放且多孔的。

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