负载脂肪酸酯的定形相变复合纤维的制备与性能研究  

Preparation and properties of form-stable phase change composite fibers with the GMS loading

作　　者：柯惠珍[1] 逄增媛 宗雪[1] 魏取福[1] 蔡以兵[1] 黄锋林[1] 

机构地区：[1]江南大学生态纺织教育部重点实验室,江苏无锡214122

出　　处：《功能材料》2014年第11期11051-11055,共5页Journal of Functional Materials

基　　金：国家高技术研究发展计划(863计划)资助项目(2012AA030313);教育部长江学者和创新团队发展计划资助项目(IRT1135);江苏省产学研联合创新基金资助项目(BY2012068);江苏省科技支撑资助项目(SBE201201094)

摘　　要：以单硬脂酸甘油酯(GMS)为固液相变材料,以聚对苯二甲酸乙二酯(PET)纤维为支撑材料,通过静电纺丝方法成功制备了新型的GMS/PET定形相变复合纤维。FE-SEM观察显示随着定形相变复合纤维中GMS含量的增加,纤维直径逐渐增大且直径分布更广,纤维交叉点之间也出现粘连。XRD分析结果表明,静电纺丝过程中GMS和PET纤维基体能够很好地结合,由于PET纤维基体的支撑保护作用阻碍了GMS的结晶,导致结晶度下降。DSC分析结果表明,静电纺GMS/PET定形相变复合纤维是一种相变过程完全可逆的储能材料,其相变焓值随着纤维中GMS含量的增加而逐渐增大,相变焓效率>85%。在DSC热循环测试过程中定形相变复合纤维的相变温度和相变焓值几乎没有变化,表明了该材料具有良好的热循环稳定性。An innovative type of glycerol monostearate /polyethylene terephthalate（ GMS /PET） form-stable phase change composite fibers in which GMS acts as a solid-liquid phase change material and PET serves as a supporting material was successfully fabricated by electrospinning. The FE-SEM images revealed that the diameters of the form-stable phase change composite fibers gradually increased with the increasing GMS loading,whilst the wider diameter distribution and the adhesion among the composite fiber intersections could be also observed. The XRD patterns suggested that the GMS and PET exhibited good compatibility with each other and the crystallization degree of GMS in the fibers remarkably decreased resulting from the crystallization being hindered by the PET supporting skeleton. The DSC analysis showed that electrospun GMS /PET form-stable phase change composite fibers were a kind of transition reversible latent heat storage materials and the phase transition enthalpies of the composite fibers gradually increased with the increase of GMS contents. The efficiency of enthalpies was larger than 85%. Moreover,the DSC thermal cycling test indicated that the phase change temperatures and enthalpies had almost no significant variation after the thermal cycling test,suggesting that electrospun GMS /PET form-stable phase change composite fibers had good thermal reliability.

关 键 词：单硬脂酸甘油酯 静电纺丝 定形相变复合纤维 形貌结构 储热性能 

分 类 号：TQ342.94[化学工程—化纤工业]