梳状相变聚合物为芯材的复合调温纤维的制备及热性能  

Fabrication and thermal properties of wet-spun thermo-regulating fibers with a novel comb-like phase change polymer core

作　　者：李树芹 陈赛 王学晨[1] 张兴祥[1] 石海峰[1] 

机构地区：[1]天津工业大学材料科学与工程学院天津市先进纤维与储能技术重点实验室,天津300387

出　　处：《复合材料学报》2018年第1期8-15,共8页Acta Materiae Compositae Sinica

基　　金：天津市应用基础与前沿计划重点项目(16JCZDJC37000)

摘　　要：通过自由基聚合方法成功制备的新型梳状相变聚合物-聚二乙二醇十六烷基醚单丙烯酸酯(PC16E2AC),其相变温度为35℃,十分接近人体温度。选取PC16E2AC为芯材,丙烯腈偏氯乙烯共聚物(P(AN-co-VDC))为皮材,利用同轴湿法纺丝工艺制备了一系列热焓值不同的PC16E2AC-P(AN-co-VDC)复合调温纤维,并对其形貌、结构和热性能进行了表征。结果表明:制备的PC16E2AC-P(AN-co-VDC)复合调温纤维直径均一,表面光滑,具有明显的皮芯结构。并且随着皮芯挤出比(S∶C)的增加,皮材直径逐渐增大,芯材直径逐渐减小,复合调温纤维的断裂强度逐渐增大,热焓值也从23J/g逐渐增加到57J/g。此外,PC16E2AC-P(AN-coVDC)复合调温纤维在低于220℃具有良好的热稳定性。300次的冷/热循环测试和24h的抽提实验表明,该复合调温纤维具有良好的耐热循环稳定性和抗渗透性。值得注意的是,PC16E2AC-P(AN-co-VDC)复合调温纤维的相变温度始终在35℃左右,表明其有望用于智能纺织品领域。A novel phase change polymer,poly（diethylene glycol hexadecyl ether acrylate）（PC16 E2 AC）,was successfully synthesized by the free radical polymerization method.PC16 E2 AC with melting peak temperature at approximately 35℃,being close to the temperature of human skin,was selected as the core material to fabricate a series of core-sheath thermo-regulating fibers with various heat enthalpies via bicomponent wet-spinning technology with acrylonitrile-vinylidene chloride copolymer（P（AN-co-VDC））being employed as sheath.The morphology,microstructure and thermal property of the composite thermo-regulated fibers were characterized systematically.The results show that the PC16 E2 AC-P（AN-co-VDC）composite thermo-regulated fibers have uniform diameter,smooth surface and obvious core-sheath structure.Moreover,with increasing of the core-sheath extrusion ratio（S∶C）,the diameter of sheath increases gradually while the diameter of core shows the opposite trend.The breaking strength of PC16 E2 AC-P（AN-co-VDC）composite fibers improves steadily and the enthalpy also changes from 23 J/g to 57 J/g in the meantime.The fibers have good thermal stability under 220℃.300 times thermal cycle test and 24 hours extraction experiment in toluene shed light on the good thermal reliability and excellent anti-osmosis property of the PC16 E2 AC-P（AN-co-VDC）composite thermo-regulated fibers.It is noted that the melting peak temperature of the PC16 E2 AC-P（AN-co-VDC）composite thermo-regulated fibers always remains at about 35℃,which indicates thepotential for their application in smart textiles.

关 键 词：梳状聚合物 相变 调温纤维 湿法纺丝 皮芯结构 

分 类 号：TQ324[化学工程—合成树脂塑料工业]