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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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六钛酸钾晶须掺杂改性气凝胶的结构和性能
, PP. 20-23
Keywords: sio2气凝胶,六钛酸钾晶须,掺杂,遮光剂,热导率
Abstract:
以六钛酸钾晶须（ptw）为遮光剂，掺入sio2气凝胶中降低气凝胶的热导率。研究偶联剂的种类和添加量、ptw掺入量对气凝胶热导率、密度和比表面积等性能的影响。采用x线衍射仪（xrd）、傅立叶红外光谱仪（ftir）、扫描电子显微镜（sem）对气凝胶进行表征。结果表明：05mlkh550对10gptw进行表面改性后，将ptw按照质量分数2857%掺入sio2气凝胶中可使其热导率降至002355w/(m·k)。ptw在气凝胶中保持原有的晶体结构，sio2仍保持无定形网络结构。
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