高温接触条件下形状记忆合金阻燃面料的隔热性能

The thermal insulation performance of fireproof fabrics with shape memory alloy springs under hot surface contact

热防护服对于保护消防员与应急救援人员的健康和人生安全起到至关重要的作用。文章在热防护服的防水透气层与隔热层之间设置若干对环境温度变化反应较为灵敏的感温驱动组件——形状记忆合金弹簧,研制具有动态结构的新型热防护服面料。通过高温接触实验,表征各层面料的温度变化,从而评价不同排列方式的形状记忆合金弹簧对面料隔热性能的影响。研究表明,形状记忆合金弹簧可以显著降低传递至人体的热量,弹簧的排列方式对其热传递也具有一定的影响。此研究结果为开发性能优越的形状记忆热防护服提供科学依据。

Thermal protective clothing plays an important role in protecting health and safety of firefighters and emergency rescuers. In this study,shape memory alloy （SMA） springs were set between moisture barrier layer and thermal liner layer of thermal protective clothing to develop novel thermal protective materials with dynamic structure. Hot surface contact experiment was done to characterize the changes in temperature at different layers to evaluate the influence of different arrangement modes of SMA springs on thermal insulation performance of the fabric. The results indicate that SMA spring could greatly decrease the heat transfer to human body,and the spring arrangement mode has certain influence on heat transfer. The research findings may be applied to design excellent thermal protective clothing with proper arrangement of SMA springs.