以聚(丙烯腈-甲基丙烯酸甲酯-丙烯酸丁酯)为壳,对甲苯磺酰肼(TSH)为核,通过悬浮聚合法制得热胀性微胶囊.探讨了乳化剂和单体组成对微胶囊粒径、热膨胀性能的影响,并对其结构与性能进行了表征.红外谱图证实了AN-MMA-BA共聚物对TSH的成功包覆.微胶囊的横切扫描电镜图片显现出规整的核-壳结构.壳层共聚单体组成AN/MMA/BA为70%/20%/10%时所合成的微胶囊具有良好的热胀性能,含2%热胀性微胶囊的水性木器涂层经热处理后明显膨胀;热失重分析表明,较之于未加微胶囊的涂层,加入2%热胀性微胶囊涂层胶膜的失重起始温度提高了20℃以上,涂层热稳定性能提高,热分解温度范围为210～380℃,在250～320℃之间缓慢分解.
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