探讨了水热处理对可逆热致变色竹粉/塑料复合材料的材色和力学性能的影响.通过ESEM观察竹粉/塑料试样表面的微观结构;分别利用FTIR和DSC方法表征试样表面化学成分的变化以及试样的结晶度.研究结果表明:水热处理对可逆热致变色竹粉/塑料复合材料各性能具有较大的影响,其影响程度为:水热80℃处理＞常温水浴处理＞干热80℃处理,水热处理使试样表面产生较大裂纹,接触角和力学性能明显降低,材色变化非常显著;常温水浴处理使得试样表面产生微裂纹,接触角略有降低,其力学性能呈现先升后降再升高的趋势,材色变化较明显;干热处理之后的试样表面光滑、平整,接触角反而增大,其力学性能变化不一致,材色变化不明显.红外光谱和差示扫描量热法分析表明,干热80℃、常温水浴和水热80℃处理使竹粉和高密度聚乙烯发生一定程度的降解,且高密度聚乙烯会发生再结晶现象.
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