文章摘要
赵姣姣,周建华,崔艳娇.纳米胶囊化二元复合相变材料的制备及热性能[J].精细化工,2019,36(6):
纳米胶囊化二元复合相变材料的制备及热性能
Preparation and Thermal Properties of Nanoencapsulated Binary Phase Change Materials
投稿时间:2018-11-22  修订日期:2019-01-22
DOI:
中文关键词: 相变材料  纳米胶囊  PMMA  潜热储存  调温织物
英文关键词: phase change material  nanocapsule  PMMA  latent heat storage  thermoregulation textile
基金项目:陕西省教育厅服务地方专项计划项目(16JF006);陕西省自然科学基础研究计划项目(2017JZ003)
作者单位E-mail
赵姣姣 陕西科技大学 2363894503@qq.com 
周建华 陕西科技大学 zhoujianh@21cn.com 
崔艳娇 陕西科技大学  
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中文摘要:
      以正十八烷(C18)和硬脂酸丁酯(BS)为复合芯材,聚甲基丙烯酸甲酯(PMMA)为壁材,通过无皂乳液聚合法制备纳米胶囊化相变材料,探讨了乳化剂种类和用量、引发剂种类和用量、芯壁比对纳米胶囊的影响,并采用透射电子显微镜(TEM)、场发射扫描电镜(SEM)、傅里叶红外光谱分析仪(FTIR)、X-衍射仪(XRD)、示差扫描量热仪(DSC)和热重分析仪(TGA)对纳米胶囊的形貌、化学结构和热性能进行测试表征。研究表明,当烷基乙烯基磺酸盐(AVS)用量占油相总质量的3.0wt%,过硫酸铵(APS)用量占单体MMA质量的1.2wt%,芯壁比为2:4时,制备的纳米胶囊单体转化率最高、粒径最小、球形形貌最规整。相变纳米胶囊的熔融焓和结晶焓分别为56.89 J/g和54.02 J/g,具有良好的储热能力和耐热性能,且整理于织物上有较好的调温效果。
英文摘要:
      Nanoencapsulated phase change materials were prepared through surfactant-free emulsion polymerization with n-octadecane (C18) and n-butyl stearate (BS) as binary cores and poly(methyl methacrylate) (PMMA) as shell. The effects of the type and dosage of emulsifier, the type and dosage of initiator and core/shell mass ratio on nanocapsules were studied. The surface morphology, chemical structure and thermal properties of phase change nanocapsules were characterized by transmission electron microscopy (TEM), field emission scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), X-Ray diffraction (XRD), differential scanning calorimetry (DSC) and thermogravimetric analyzer (TGA). The results indicate that the best preparation conditions of nanocapsules are when the alkyl vinyl sulfonate (AVS) dosage is 3.0wt% to oil phase, ammonium persulfate (APS) dosage is 1.2wt% to MMA and core/shell mass ratio is 2:4. At the moment the monomer conversion of nanocapsules is the highest, particle size is the smallest and spherical morphology is the most regular. In addition, phase change nanocapsules have good latent heat storage capacity and heat resistance, and their melting enthalpy and crystallization enthalpy are 56.89 J/g and 54.02 J/g, respectively. The finished fabrics with phase change nanocapsules have better thermoregulation effect.
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