摘要
研究了用甲基丙烯酸甲酯（ Ｍ Ｍ Ａ）处理硅灰石微粒表面的微观变化。测定了硅灰石微粒与聚醋酸乙烯乳液（ Ｐ Ｖ Ａ Ｃ乳液）的接触角及吸附热Δ Ｈａ，结果表明：处理后的硅灰石微粒润湿性能显著增强，放出的吸附热为－ ３．３６×１０２ Ｊ·ｍ ｏｌ－ １。并研究了硅灰石微粒的应用，用硅灰石粉末作填料，可降低涂料成本，增强分散性和稳定性。
Microscopic changes on the surface of wollastanite particles treated with methyl methacrylate(MMA) are investigated.The touching angle and absorbing heat between wollastanite particle and PVAC emulsion are tested.The results indicate that the wetting property of the treated wollastanite particles is obviously increased and -3.36×10\+2 J·mol\+ -1 of absorbing heat are released.Also, the application of wollastanite particles is studied.With wollastanite powder as stuffing, the lower cost, higher dispersion and more stability are obtained.
