Evolution of Surface Composition, Porosity, and Surface Area of Glass Fibers in a Moist Atmosphere
Evolution of Surface Composition, Porosity, and Surface Area of Glass Fibers in a Moist Atmosphere
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潮湿气氛中玻璃纤维表面成分、孔隙率和表面积的演变
DOI：
10.1021/la950531e
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发表时间：
1996
期刊：
影响因子：
3.9
通讯作者：
E. Guilloteau
中科院分区：
文献类型：
--
作者：
P. Trens;and R. Denoyel;E. Guilloteau
这项工作的目的是研究水分对 C 和 E 玻璃纤维表面化学和织构的影响。热分析（在受控速率转化分析条件下）结合质谱、表面积测定（通过 77 K 下的氪吸附）、通过重量分析法吸附水和 AFM 来表征新型纤维和老化纤维（在 50 °C、95% 湿度下几天）。虽然老化对 E 玻璃纤维影响很小，这可以通过出现小粗糙度和亲水表面位点来解释，但在 C 玻璃纤维上观察到的变化却很大。表面积增加至少10倍，出现微孔（由气体吸附显示），并在表面形成簇（由AFM证明）。钠和钙从本体迁移到表面（在那里它们以碳酸盐的形式稳定，与热分析结果一致）可以解释微孔和团簇的形成。
The aim of this work is to study the influence of moisture on the surface chemistry and texture of C and E glass fibers. Thermal analysis (in the conditions of controlled rate transformation analysis) coupled with mass spectroscopy, surface area determination (by krypton adsorption at 77 K), adsorption of water by gravimetry, and AFM were used to characterize both novel and aged fibers (a few days at 50 °C in 95% humidity). Whereas aging has little effect on E glass fibers which can be interpreted by the appearance of both a small roughness and hydrophilic superficial sites, the changes observed on the C glass fibers are drastic. The surface area is increased by at least 10 times, micropores appear (as shown by gas adsorption), and clusters (evidenced by AFM) are formed on the surface. The migration of sodium and calcium from the bulk toward the surface (where they are stabilized under the form of carbonates in agreement with thermal analysis results) could explain the formation of both micropores and clu...