形状记忆智能织物系统热防护性能评价

Thermal protective performance of smart fabric systems with shape memory fabrics

为提升热防护服的防护性能,该研究基于形状记忆合金丝,开发了10种形状记忆织物,并构建适用于热防护服的温度响应型智能织物系统,探究相邻合金丝间距、形状记忆织物密度和芳纶纱线种类3个因素对形状记忆智能织物系统热防护性能的影响。结果表明:智能织物系统相较于传统热防护织物系统显著降低了织物内表层的温升速率,延长了温升12℃和温升24℃的时间。当合金丝间距为2 cm且使用芳纶1414织造的形状记忆织物纬密为20根/cm时,形状记忆智能织物系统的热防护性能最优。

Ten types of shape memory fabrics were fabricated using shape memory alloys to evaluate the thermal protective performance of these temperature-responsive smart fabric systems. Tests with these fabrics studied the effects of the shape memory alloy spacing, the shape memory fabric density and the aramid yarn type of the fabric on the thermal protective performance. The results demonstrate that the smart fabric systems significantly reduce the temperature rise, specifically prolonging the times for temperature rises of 12 ℃ and 24 ℃. The smart fabric systems provide the best thermal protection with 2 cm shape memory alloy spacings and shape memory fabrics woven using aramid 1414 with a fabric density of 20 wale/cm.