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系统研究了不同形貌结构的再生涤纶的保温效率。研究表明:线密度为0.8 dtex的再生涤纶的直径为12~14μm,线密度为1 dtex的再生涤纶中空纤维的直径为13~20μm,中空再生涤纶的直径分布较宽,而非中空纤维的纤维直径分布更窄;在相同线密度下,开松后纤维的保温率比未开松纤维的高;在切断长度相同的情况下,线密度越高,相同填充量下纤维的保温性能越差;保温填充材料越少,填充切断长度越短的纤维,越有利于保温性能的提升,而纤维长度越长,填充材料越多的保温效率也更高;在相同填充量情况下,中空纤维比非中空纤维具有更高的保温率;此外,开松后的纤维具有更优良的保温效果,且保温材料填充量达到80 g左右时,充填量基本达到饱和,继续添加试样,会造成纤维之间互相挤压,反而对保温效果不利。
The thermal insulation efficiency of regenerated polyester with different topography was systematically studied. The results show that the diameter of regenerated polyester fiber with linear density of 0.8 dtex is 12 ~ 14 μm, the diameter of regenerated polyester hollow fiber with linear density of 1 dtex is 13 ~ 20 μm, the diameter of hollow regenerated polyester fiber is wide, while the diameter of non-hollow fiber The diameter distribution is narrower; under the same linear density, the heat preservation rate of the opened fiber is higher than that of the unopened fiber; in the same cutting length, the higher the linear density, the worse the heat preservation performance of the fiber under the same filling amount; Filling materials with less insulation, filling the shorter cutting length of the fiber, the more conducive to the improvement of thermal insulation properties, and the longer the fiber length, the more efficient packing material insulation efficiency; the same amount of filling conditions, the hollow fiber ratio Hollow fiber has a higher thermal insulation rate; In addition, the opened fiber has a better insulation effect, and the insulation material filling amount of 80 g or so, the filling volume is almost saturated, continue to add the sample will result in between the fibers Squeeze each other, but adverse effects on the insulation.