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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Synthesis and characterization of novel aramid-zirconium oxide micro-composites
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Synthesis and characterization of novel aramid-zirconium oxide micro-composites

机译：新型芳纶-氧化锆微复合材料的合成与表征

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New micro-composites containing different proportions of zirconium oxide in aromatic polyamide have been prepared via a sol-gel process. Poly(phenyleneterephthalamide) chains with carbonyl chloride end groups were synthesized by reacting a mixture of p- and m-phenylene diamines with terephthaloyl chloride. The chain ends were endcapped with aminophenyltrimethoxysilane. Appropriate amount of zirconium propoxide solution (82.3 wt.%) in propanol was mixed in the polymer solution and then a stoichiometric amount of water was added to the mixture to carry out the hydrolysis of methoxy and propoxy groups. Hybrid materials using different proportions of zirconium propoxide in the organic polymer were thus prepared. Thin films cast from this material were transparent, yellow in color and tough. A gradual increase in the tensile strength was observed with increase in the zirconia content (up to 10%). The tensile modulus of the hybrid mixture was in the range of 2.7 to 4.0 cpa at 25 degrees C. The values of the tensile strength varied from 163 to 203 MPa at 25 degrees C. The maximum strain at the break point initially increased but then decreased with further addition of zirconia. The glass transition temperature determined from the maxima of the tan delta data using dynamic mechanical thermal analysis increased with increase in the zirconia content. The thermal decomposition temperature of the hybrid material measured through thermogravimeteric analysis was around 450 degrees C.
机译：已经通过溶胶-凝胶法制备了在芳族聚酰胺中含有不同比例的氧化锆的新型微复合材料。通过使对和间亚苯基二胺的混合物与对苯二甲酰氯反应合成具有羰基氯端基的聚对苯二甲酰胺链。链端用氨基苯基三甲氧基硅烷封端。在聚合物溶液中混合适量的丙醇中的丙氧化锆溶液（82.3重量％），然后向该混合物中添加化学计量的水以进行甲氧基和丙氧基的水解。从而制备了在有机聚合物中使用不同比例的丙氧化锆的杂化材料。用这种材料浇铸的薄膜是透明的，黄色的和坚韧的。随着氧化锆含量的增加（至多10％），拉伸强度逐渐增加。杂化混合物在25摄氏度时的拉伸模量在2.7至4.0 cpa的范围内。在25摄氏度时抗张强度的值在163 MPa至203 MPa之间变化。断裂点的最大应变最初增加，但随后降低进一步添加氧化锆。使用动态机械热分析，根据tanδ数据的最大值确定的玻璃化转变温度随氧化锆含量的增加而增加。通过热重分析测定的杂化材料的热分解温度为约450℃。

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