摘要
以相变蜡为储能调温材料、聚乙烯醇(PVA)为包覆材料,经高速剪切乳化制备储能调温整理液,并通过浸轧-焙烘方式整理棉织物。分析相变蜡的基本性能和PVA的成膜性能,探讨相变蜡与PVA的配比及乳化剂用量对整理液性能的影响,并采用扫描电子显微镜(SEM)、热差示扫描量热仪(DSC)、热重分析仪(TG)、迷你温度记录仪和水洗实验表征调温棉织物的表面形貌、储能调温性能和耐洗牢度。结果表明:相变蜡的熔融温度为30.24℃,热焓值为190.0 J/g,过冷度为5.82℃,PVA在70℃以上成膜速率快,成膜性良好且与基材的黏附性较强;当相变蜡与PVA的投料比为5∶1,乳化剂用量占相变蜡4.8%(质量分数)时,所得储能调温整理液较为稳定;通过浸轧-焙烘整理,所得调温棉织物的纤维表面包裹明显的储能调温薄膜,相变热焓值为20.51 J/g,相转变温度为27.67℃,在同等降温条件下表现出优异的储能调温功能,可经受住约30次的水洗。
The thermo-regulated finishing agents were prepared by high speed shear emulsification with phase change wax as energy storage and temperature control materials,polyvinyl alcohol(PVA)as coating materials,and then the cotton fabrics were treated by the prepared finishing agent by a padding-curing process.The basic properties of the phase change wax and the film forming properties of PVA were analyzed,the effects of the phase change wax and PVA ratios and the amounts of emulsifier on the performance of the finishing agent were investigated,and the surface morphology,heat storage and temperature regulation performance and washing fastness of resultant thermo-regulating cotton fabrics were characterized by SEM,DSC,TG,mini temperature recorder and water washing experiments.The results show that the melting temperature of the phase change wax is 30.24℃,the thermal enthalpy value is 190.0 J/g,the degree of supercooling is 5.82℃.PVA has high film formation speed,good film-forming ability and strong adhesion to the substrate when the temperature is above 70℃;when the ratio of the phase change wax to PVA is 5∶1 and the amount of the emulsifier is 4.8%(mass fraction)of the phase change wax,the prepared thermo-regulating finishing agent is relatively stable;after a padding-curing process,the surface of the cotton fibers is wrapped by an apparent film,and the prepared thermo-regulating cotton fabrics have phase change heat enthalpy of 20.51 J/g and phase transition temperature of 27.67℃.Under the same cooling conditions,the finished cotton fabrics exhibit good heat storage and temperature regulation performance,and can withstand 30 times of washing.
作者
刘国金
石峰
张国庆
周岚
LIU Guo-jin;SHI Feng;ZHANG Guo-qing;ZHOU Lan(College of Textiles Science and Engineering,Zhejiang Sci-Tech University,Hangzhou 310018,China)
出处
《材料工程》
EI
CAS
CSCD
北大核心
2020年第12期97-102,共6页
Journal of Materials Engineering
关键词
相变蜡
聚乙烯醇
储能调温整理液
棉织物
phase change wax
polyvinyl alcohol
thermo-regulated finishing agent
cotton fabrics
