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不同型号PVA对纳米TiO2/PVA复合材料性能的影响

, PP. 88-93

Keywords: 聚乙烯醇(17-99与17-88),纳米TiO2,复合材料,阻隔性能,耐水性能

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Abstract:

用硅烷偶联剂γ-甲基丙烯酰氧基丙基三甲氧基硅烷(KH550)对纳米TiO2进行改性,将不同比例的聚乙烯醇(17-88与17-99)相混合制成胶液,再采用直接共混法制备了纳米TiO2/聚乙烯醇(PVA)复合材料,并流延成膜。通过自制透水仪、扫描电镜、热失重分析、拉伸强度、耐水性能以及透明性对纳米TiO2/PVA复合膜进行表征,探讨不同含量的PVA17-88对复合膜的性能影响。结果表明,PVA17-88的质量分数为30%,纳米TiO2/PVA膜厚度控制在25~30μm,透水量较大,拉伸强度达到28.72MPa,耐水性能最佳。

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