碳纳米管对液体石蜡微胶囊性能影响的探究

发布时间：2018-12-11 12:19

【摘要】：以液体石蜡为囊芯,三聚氰胺-甲醛树脂作壳材,碳纳米管为改性剂,采用原位聚合法制备碳纳米管/石蜡相变储能微胶囊。研究了碳纳米管对于微胶囊相变储能材料的粒径分布、包覆率、机械强度、密封性的影响。结果表明,随着碳纳米管量增加,囊芯所占比例逐渐减小,包覆率逐渐降低;当添加MNCNTs-OH量为0.0,1.7%,3.3%,6.7%时,破损率分别为22.3%,15.9%,14.7%,17.6%,且比未添加MNCNTs-OH的相变微胶囊重量释放速率慢,说明MNCNTs-OH不仅能够降低胶囊破损率,改善了胶囊壁材的韧性与强度,而且提高相变微胶囊的密封性。
[Abstract]:Carbon nanotubes (CNTs) / paraffin phase change microcapsules (PCMs) were prepared by in-situ polymerization with liquid paraffin as the core, melamine formaldehyde resin as shell material and carbon nanotubes as modifier. The effects of carbon nanotubes (CNTs) on the particle size distribution, encapsulation rate, mechanical strength and sealing of microencapsulated phase change energy storage materials were studied. The results show that with the increase of carbon nanotubes, the proportion of the core decreases and the coating rate decreases. When the amount of MNCNTs-OH added was 0.01.7and 3.3and 6.7, the rate of breakage was 22.3and 15.9and 14.717.6respectively, and the release rate was slower than the weight release rate of phase change microcapsules without adding MNCNTs-OH. The results show that MNCNTs-OH can not only reduce the damage rate of the capsule, improve the toughness and strength of the capsule wall material, but also improve the sealing ability of the phase change microcapsule.
【作者单位】：辽宁石油化工大学化学化工与环境学部;
【基金】：辽宁省自然科学基金(2013020079)
【分类号】：TB34;TQ317

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