聚苯乙烯纳米粒子及其石蜡乳液的制备与应用  

Preparation and application of polystyrene nanoparticles and paraffin emulsions

作　　者：薛中衡 任钦益 刘海涓 柯文涛 辛跃 朱新生[1] XUE Zhongheng;REN Qinyi;LIU Haijuan;KE Wentao;XIN Yue;ZHU Xinsheng(Faculty of Textile and Clothing Engineering,Soochow University,Suzhou 215021)

机构地区：[1]苏州大学纺织与服装工程学院,江苏苏州215021

出　　处：《合成纤维工业》2022年第3期59-64,共6页China Synthetic Fiber Industry

摘　　要：以苯乙烯(St)与苯乙烯磺酸钠(NaSS)为单体,通过无皂乳液聚合制备磺化聚苯乙烯纳米粒子(nano-SPS);然后将nano-SPS和石蜡在强剪切作用下形成石蜡Pickering乳液,采用石蜡Pickering乳液浸渍整理黏胶非织造布制备相变材料;对nano-SPS的结构形态、石蜡Pickering乳液的稳定性及相变材料的热性能进行表征。结果表明:NaSS参与了St的共聚,当NaSS相对St质量体积分数为25%时,nano-SPS呈单分散性,粒径约为40 nm,水接触角为60.4°,具有较好的亲水性;用nano-SPS乳化石蜡的最佳条件为nano-SPS质量分数1.5%、石蜡/水体积比55/45,石蜡乳液具有良好的储存稳定性;用上述石蜡乳液浸渍整理非织造布制得的相变材料石蜡负载率为351.6%时,相变焓达105.0 J/g,具有良好的相变蓄热能力。Sulfonated polystyrene nanoparticles(nano-SPS)were prepared by soap-free emulsion polymerization using styrene(St)and sodium styrene sulfonate(Na SS)as monomers.A paraffin Pickering emulsion was formed from nano SPS and paraffin under strong shear and was used to impregnate and finish viscose nonwoven materials to prepare phase change material.The morphology of nano-SPS,the stability of paraffin Pickering emulsion and the thermal properties of the phase change material were investigated.The results showed that Na SS participated in the copolymerization of St and nano-SPS was in monodispersion with a particle size about 40 nm and exhibited a relatively good hydrophilicity with a water contact angle of 60.4°when the volume fraction of NASS based on St was 25%;paraffin emulsion exhibited good storage stability when the conditions for emulsifying paraffin with nano-SPS were optimized as follows:nano-SPS mass fraction 1.5%,paraffin/water volume ratio 55/45;and the phase change material had the enthalpy of phase change up to 105.0 J/g,indicating a good phase change heat storage capacity,when the paraffin loading rate of the phase change material prepared by impregnating and finishing nonwovens with the above paraffin emulsion was 351.6%.

关 键 词：非织造布 聚苯乙烯 无皂乳液聚合 石蜡乳液 相变材料 

分 类 号：TQ342.85[化学工程—化纤工业]