<section data-role="outer" class="article135" label="edit by 135editor"><p style="margin-bottom: 0px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; color: rgb(34, 34, 34); font-size: 17px; letter-spacing: 0.544px; text-align: justify; line-height: 1.75em; visibility: visible; font-family: system-ui, -apple-system, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;, Arial, sans-serif; overflow-wrap: break-word !important;" align="justify"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; font-size: 14px; color: rgb(63, 63, 63); visibility: visible; overflow-wrap: break-word !important;"></span></p><section style="margin: 0px; padding: 0px 5px 0px 10px; outline: 0px; max-width: 100%; font-size: 16px; color: rgb(100, 153, 249); text-align: center; visibility: visible; overflow-wrap: break-word !important;" class=""><strong data-brushtype="text" style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; overflow-wrap: break-word !important;">保温性能超强的纤维</strong></section><section style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(183, 210, 255); text-align: center; visibility: visible; overflow-wrap: break-word !important;" class=""><br style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; letter-spacing: 0.544px; background-color: rgb(247, 250, 255); visibility: visible; font-family: system-ui, -apple-system, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;, Arial, sans-serif; overflow-wrap: break-word !important;"></section><p style="margin-bottom: 0px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; color: rgb(34, 34, 34); font-size: 17px; letter-spacing: 0.544px; text-align: justify; line-height: 1.75em; visibility: visible; font-family: system-ui, -apple-system, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;, Arial, sans-serif; overflow-wrap: break-word !important;" align="justify"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; font-size: 14px; color: rgb(63, 63, 63); visibility: visible; overflow-wrap: break-word !important;">中空纤维和超细纤维是化学纤维中保暖性能较好的纤维。研究发现纤维材料的保暖性能与纤维材料内部静止空气含量成正比，与纤维直径成反比，与整体材料密度成反比。气凝胶纤维具有孔隙率极高、密度超低等显著特征，理论上是隔热保温效果最好的一种纤维，有望取代超细纤维成为下一代保暖纤维的最重要发展方向。</span></p><p style="margin-bottom: 0px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; color: rgb(34, 34, 34); font-size: 17px; letter-spacing: 0.544px; text-align: justify; line-height: 1.75em; visibility: visible; font-family: system-ui, -apple-system, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;, Arial, sans-serif; overflow-wrap: break-word !important;" align="justify"><br></p><section style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(34, 34, 34); font-size: 17px; letter-spacing: 0.544px; text-align: justify; line-height: 1.75em; visibility: visible; font-family: system-ui, -apple-system, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;, Arial, sans-serif; overflow-wrap: break-word !important;" class=""><p style="margin-bottom: 0px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; font-size: 15px; visibility: visible; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(63, 63, 63); font-size: 14px; caret-color: red; visibility: visible; overflow-wrap: break-word !important;">凯夫拉气凝胶纤维是通过溶解杜邦TM的Kevlar纤维获得纳米纤维分散液，然后进行湿法纺丝、特种干燥等过程制成的，孔隙率高达98%，比表面积达240m2/g，该气凝胶纤维具有优异的力学性能，可以任意弯曲、打结、编织等，具有优异的隔热性能，常温下热导率仅为0.027W/m·K，在低温下其隔热性能是棉布的2.8倍，可在-196-300℃的极端环境下长时间发挥隔热保温性能；具有优异的化学稳定性，可进行染色、疏水化、化学镀等多种改性，且不损伤气凝胶主体骨架结构。重要的是该气凝胶纤维也可以通过填充相变材料制备成空调纤维，其热焓值可达162J/g，远超现有空调纤维的热焓值。</span></p></section></section>