基于微波辅助合成相变储能微胶囊的PE调温纤维的纺制
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摘要
以脲醛树脂为壁材、月桂醇为芯材,采用微波辅助原位包覆聚合反应制备了脲醛树脂/月桂醇相变储能微胶囊(UF/LA-PCESMs),将其与聚乙烯基体混合、造粒,通过熔融纺丝法制得了聚乙烯储能调温纤维(UF/LAPCESMs-PE),并进行了形貌、热性能和力学性能表征。结果表明:随UF/LA-PCESMs含量的增加,纤维的储能潜热稳步增加,实验范围内最高可达74. 52 J/g。在热失重实验中,纤维最大失重速率温度随UF/LA-PCESMs含量增加向高温移动,热稳定性良好。抗张强度随UF/LA-PCESMs含量增加而下降,但在实验范围内(最高为20%)仍可满足常规纤维使用要求。SEM照片显示,UF/LA-PCESMs较好地分布于PE基体中,其结构保留较为完整。
Taking urea-formaldehyde resin as wall material and lauryl alcohol as core material,poly( urea-formaldehyde)/lauryl alcohol phase-change energy storage microcapsules( UF/LA-PCESMs) were prepared by microwave-assisted in-situ encapsulation polymerization. And polyethylene energy storage thermoregulated fibers( UF/LA-PCESMs-PE fibers) were obtained by the process of blending( UF/LA PCESMs and PE), granulating and melt spinning. The morphology, thermal and mechanical properties were characterized,respectively. The results show that the latent heat of UF/LA-PCESMs-PE fibers increases steadily with the increase of UF/LA-PCESMs contents and could achieve 74. 52 J/g. The maximum weight loss rate of fibers could move to high temperature with the increase of UF/LA-PCESMs contents. This indicates that UF/LA-PCESMs could improve the thermal stability of PE fibers. The tensile strength decreases with the increase of UF/LA-PCESMs contents. However,the mechanical properties of UF/LA-PCESMs-PE fibers could still satisfy with the requirements of textile( UF/LA-PCESMs contents range from 0 to 20 wt%).The results of SEM show that UF/LA-PCESMs are well distributed in PE matrix and the structure remains intact.
Taking urea-formaldehyde resin as wall material and lauryl alcohol as core material,poly( urea-formaldehyde)/lauryl alcohol phase-change energy storage microcapsules( UF/LA-PCESMs) were prepared by microwave-assisted in-situ encapsulation polymerization. And polyethylene energy storage thermoregulated fibers( UF/LA-PCESMs-PE fibers) were obtained by the process of blending( UF/LA PCESMs and PE), granulating and melt spinning. The morphology, thermal and mechanical properties were characterized,respectively. The results show that the latent heat of UF/LA-PCESMs-PE fibers increases steadily with the increase of UF/LA-PCESMs contents and could achieve 74. 52 J/g. The maximum weight loss rate of fibers could move to high temperature with the increase of UF/LA-PCESMs contents. This indicates that UF/LA-PCESMs could improve the thermal stability of PE fibers. The tensile strength decreases with the increase of UF/LA-PCESMs contents. However,the mechanical properties of UF/LA-PCESMs-PE fibers could still satisfy with the requirements of textile( UF/LA-PCESMs contents range from 0 to 20 wt%).The results of SEM show that UF/LA-PCESMs are well distributed in PE matrix and the structure remains intact.
引文
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[2]YI S,SUN S,DENG Y,et al.Preparation of composite thermochromic and phase-change materials by the sol-gel method and its application in textiles[J].J Textile Inst,2015,106(10):1071-1077.
[3]ZHANG Z,ZHANG X,SHI H,et al.Thermo-regulated sheath/core submicron fiber with poly(diethylene glycol hexadecyl ether acrylate)as a core[J].Textile Res J,2015,86(5):493-501.
[4]WEDER M.Scale of change[J].Textile Month,2001,(10):37-38.
[5]谢跃亭,邢善静,曹俊友,等.基于相变材料作用下的智能调温纤维[J].合成纤维,2017,46(9):27-30.
[6]张春媛,王军.智能纤维在服装中的应用与发展[J].纺织科技进展,2017(7):49-52.
[7]张希莹,方东根,沈雷,等.智能纤维及智能纺织品的研究与开发[J].纺织导报,2015(6):103-106.
[8]NELSON G.Microencapsulation in textile finishing[J].Rev Prog Coloration,2001,31:57-64.
[9]HOLMES D A.Performance characteristics of waterproof breathable fabrics[J].J Coated Fabrics,2000,29(4):306-316.
[10]SEN A K.Coated textiles:Principle and applications[M].Lancaster,PA:Technomic Publishing Co.,2001.
[11]VIGO T L,FROST C M.Temperature-adaptable textile fibers and method of preparing same:US,4871615[P].1989-10-03.