本文以Al(OH)3和H3PO4为原料,研究了磷酸盐粘结剂的最佳合成条件,探讨了P/Al配比和反应温度对Al(H2PO4)3的形成以及填料的加入对粘结剂耐热性的影响,利用XRD和TGDSC对粘结剂晶体结构和涂层热性能进行了分析.结果表明:P/Al比例为3∶1.4,合成温度在120~200℃范围内,可获得性能较好的Al(H2PO4)3粘结剂.填料的加入有利于粘结剂表面吸附水的蒸发和磷酸盐基体分子间结晶水的脱除,提高了涂层的热稳定性和耐高温性能.
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