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首页> 外文会议>Proceedings of the First International Conference on Application and Commercialization of Sol-Gel Processing, Saarbruecken, Germany >Preparation and properties of poly(vinyl acetate)/silica-gel hybrids obtained by sol-gel process: effect of methyl groups in silicon alkoxide
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Preparation and properties of poly(vinyl acetate)/silica-gel hybrids obtained by sol-gel process: effect of methyl groups in silicon alkoxide

机译：溶胶-凝胶法制备聚醋酸乙烯酯/硅胶杂化物的制备及性能：烷氧基硅中甲基的影响

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摘要

A copolymer of vinyl acetate (VAc) and vinyl triethoxysilane (VTES) having molar ratio of 9:1 was synthesized and incorporated with silica-gel by the sol-gel process. Tetratethoxysilane (TEOS), methyltriethoxysilane (MTES), and dimenthyldiethoxysilane (DMDES) were used s slicon alkoxides. SThe tensile strength of copoly (VAc/VTES)/silica-gel hybrids was higher than that of PVAc/silica-gel hybrids because of strong bonding between copolymer and silica-network. The strength of the copolymer hybrids prepared from STEOS and MTES increased up to 50 MPa and 43 MPa, respectively. On the other hand, the strength of the hybrid from DMDES decreased with DMDEs content. The elongation of the hybrids increased by mixing 20 wt
机译：合成摩尔比为9：1的乙酸乙烯酯（VAc）和乙烯基三乙氧基硅烷（VTES）的共聚物，并通过溶胶-凝胶法将其与硅胶结合。使用二甲硅烷基醇盐中的四乙氧基乙氧基硅烷（TEOS），甲基三乙氧基硅烷（MTES）和二薄荷基二乙氧基硅烷（DMDES）。 S由于共聚物和二氧化硅网络之间的牢固结合，共聚（VAc / VTES）/硅胶杂化物的抗张强度高于PVAc /硅胶杂化物的抗张强度。由STEOS和MTES制备的共聚物杂化物的强度分别增加到50 MPa和43 MPa。另一方面，来自DMDES的杂种的强度随DMDEs含量的降低而降低。通过混合20 wt％来增加杂种的伸长率

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