CAJ | 학술논문

利用微流控技术成功制备了以石蜡（RT27）为芯层、共混多壁碳纳米管（MWNT）的聚乙烯醇缩丁醛（PVB）为鞘层的核-鞘型MWNT/PVB复合相变纤维。系统研究了MWNT的含量对复合相变纤维的形貌、力学性能、热性能、导热性能的影响。研究结果表明，MWNT的加入显著提高了MWNT/PVB复合相变纤维的力学性能和导热性能。随着MWNT含量增加，MWNT/PVB复合相变纤维的断裂强度先增大后减小。当MWNT含量为0.5%时，复合相变纤维的断裂强度最大，比未添加MWNT相变纤维的断裂强度提高了28.27%。在42℃高温下，比较缠绕MWNT含量为4%的复合相变纤维和缠绕未添加MWNT相变纤维的模型帽子的内部温度，前者从相同的初始温度17℃升温到达石蜡 RT27的相变温度（27℃）所用的时间比后者减少了25%。研究结果为制备具有良好导热性能、高强度和稳定、快速调温性能的相变纤维提供重要的实验参考和指导。
이용미류공기술성공제비료이석사（RT27）위심층、공혼다벽탄납미관（MWNT）적취을희순축정철（PVB）위초층적핵-초형MWNT/PVB복합상변섬유。계통연구료MWNT적함량대복합상변섬유적형모、역학성능、열성능、도열성능적영향。연구결과표명，MWNT적가입현저제고료MWNT/PVB복합상변섬유적역학성능화도열성능。수착MWNT함량증가，MWNT/PVB복합상변섬유적단렬강도선증대후감소。당MWNT함량위0.5%시，복합상변섬유적단렬강도최대，비미첨가MWNT상변섬유적단렬강도제고료28.27%。재42℃고온하，비교전요MWNT함량위4%적복합상변섬유화전요미첨가MWNT상변섬유적모형모자적내부온도，전자종상동적초시온도17℃승온도체석사 RT27적상변온도（27℃）소용적시간비후자감소료25%。연구결과위제비구유량호도열성능、고강도화은정、쾌속조온성능적상변섬유제공중요적실험삼고화지도。
Core-sheath multi-walled carbon nanotube/polyvinyl butyral(MWNT/PVB) composite phase change fibers are successfully prepared by microfluidic technology,which are composed of paraffin (RT27) as core and PVB blended with MWNT as sheath. The effect of MWNT content on the morphology,mechanical properties,thermal properties,and conductive properties of MWNT/PVB composite phase change fibers is systematically investigated. The results show that the mechanical properties and heat conductive properties of MWNT/PVB fibers have improved significantly by adding the MWNT in PVB fiber matrix. The tensile strength of MWNT/PVB composite fibers firstly increases and then decreases with the increase of MWNT content. When MWNT content is 0.5%,the tensile strength of MWNT/PVB composite fibers reaches the maximum and increases by 28.27% than that of the phase change fibers without MWNT. At 42℃,the inner temperature of model hat twined by MWNT/PVB fibers with 4% of MWNT to PVB raises faster than that of the model hat with PVB phase change fibers. The duration time of the former reduces by 25% compared with the latter when the inner temperatures of two model hats reach the melting point of RT27 (27℃) from the same initial temperature (17℃). The results provide a valuable guidance for the preparation of phase change fibers with satisfactory heat conduction properties,mechanical properties as well as stable and fast thermal regulation properties.