摘要
高吸水纤维具有吸水速度快、吸水倍率高等特点。采用高吸水纤维制备非织造材料,设计用作防护服的其中一层。该材料吸水后暴露于火中,水具有较大的比热,当水受热蒸发时,大量的能量被吸收,可提高其防护性能。为研究不同湿态的高吸水非织造材料在防护服中的热防护性能,进行了耐热性能测试、耐火性能测试以及热辐射和热对流综合热防护性能试验(TPP试验)。对高吸水材料吸水保水性能进行测试,测试织物在不同含水率状态下耐不同温度、火焰、热辐射和热对流的综合热防护值。结果表明,对于不同含水率的非织造材料,在高强热流量作用下,水分有助于提高织物的热防护性能、耐热性能以及耐火焰性能,二级烧伤时间和TPP值均随面料含水率的增大而增大。
Super absorbent fiber has the characteristics of fast water absorption rate and high water absorption rate.Nonwovens are prepared from superabsorbent fibers and designed as one layer of protective clothing.The material is exposed to fire after absorbing water.As water has a large seific heat,when water is heated and evaporated,a large amount of energy is absorbed,which can improve its protection performance.In order to study the thermal protection perfornance of super absorbent nonwoven materials in different wet states in protective clothing,the characterization is conducted through the heat resistance test,fire resistance test and TPP experiment.And the water absorption and retention performance of the super absorption material are tested.The comprehensive thermal protection value of the fabric is tested under different moisture content and different temperature,flame,thermal radiation and thermal convection.The results show that for nonwovens with different moisture content,the moisture content helps to improve the thermal protection,heat resistance and flame resistance of the fabric under the action of high heat flux.The time of second degree burm and TPP value both increase with the moisture content of the fabric.
作者
玉佳静
段成璞
吴佳佳
林小琳
徐先林
YU Jiajing;DUAN Chengpu;WU Jajia;LIN Xiaolin;XU Xianlin(School of Textile,Science and Engineering,Tiangong University,Tianjin 300387,China)
出处
《上海纺织科技》
北大核心
2020年第12期52-56,共5页
Shanghai Textile Science & Technology
关键词
非织造材料
防护服
含水率
热防护性能
nonwoven material
protective clothing
moisture percentage
thermal protection performance(TPP)
