消防服外层疏水涂层织物的制备及耐酸碱性能研究
Preparation and acid and alkali resistance of hydrophobic coated fabrics for the outer layer of firefighting clothing
肖阳阳 1石佩玉 1孙冰冰 1王妮2
作者信息
- 1. 产业用纺织品教育部工程研究中心,东华大学,上海 201620;东华大学 纺织学院,上海 201620
- 2. 产业用纺织品教育部工程研究中心,东华大学,上海 201620;东华大学 纺织学院,上海 201620;纤维材料技术创新中心,河北 石家庄 050035
- 折叠
摘要
为了应对应急救援任务时所面对的复杂环境,满足极端场景下特种防护服装疏水、耐酸碱性能日益增长的需求,开发此类功能的织物势在必行.本研究将化学稳定性强的聚四氟乙烯(PTFE)与改性三聚磷酸铝(ATP)均匀混合制备分散良好的PTFE‒ATP耐酸碱剂,通过两步浸渍涂层法将PTFE‒ATP和聚二甲基硅氧烷(PDMS)依次负载到消防服外层织物表面,表征其表面形貌、润湿性能、表面固、液黏附作用、耐酸、耐碱性能、热稳定性能、透气性能、透湿性能等.结果表明:织物表面形成了致密、粗糙的PDMS/PTFE‒ATP涂层,且表现出了优异的疏水性能(接触角为(151.92±1.34)°)、极低的固、液界面附着力和耐酸、耐碱性能(pH为1～14,接触角约为150°),在接触96%浓硫酸(H2SO4)或 30%氢氧化钠(NaOH)1 h后未见严重的侵蚀、渗透现象.PDMS/PTFE‒ATP涂层的负载对织物的热稳定性能、透湿性能的影响甚微且改性后织物的透气性能仍能保持甚至优于国内常用的消防服外层织物.可为提高消防服外层织物酸碱侵蚀威胁提供一种较环保、创新且实用的解决方案.
Abstract
In order to cope with the complex environment faced during emergency rescue missions and meet the increasing de-mand for hydrophobic and acid alkali resistant properties of special protective clothing in extreme scenarios,it is imperative to de-velop fabrics with such functions.This study uniformly mixed chemically stable polytetrafluoroethylene(PTFE)with modified aluminum tripolyphosphate(ATP)to prepare a well dispersed PTFE ATP acid and alkali resistant agent.Through a two‒step impregnation coating method,PTFE ATP and polydimethylsi-loxane(PDMS)were sequentially loaded onto the surface of the outer fabric of firefighting suits,and their surface morphology,wetting properties,surface solid liquid adhesion,acid and alkali resistance,thermal stability,breathability,and moisture perme-ability were characterized.The results showed that a dense and rough PDMS/PTFE‒ATP coating was formed on the surface of the fabric,exhibiting excellent hydrophobicity(contact angle of(151.92±1.34)°),extremely low adhesion between solid and liq-uid interfaces,and acid and alkali resistance(pH 1～14,contact angle of about 150°).No serious erosion or penetration was ob-served after 1 hour of contact with 96%concentrated sulfuric acid(H2SO4)or 30%sodium hydroxide(NaOH).The loading of PDMS/PTFE‒ATP coating has little effect on the thermal stabil-ity and moisture permeability of the fabric,and the modified fab-ric still maintains or even outperforms the commonly used outer layer fabric of firefighting suits in China in terms of breathability.This provides an environmentally friendly,innovative,and practi-cal solution to address the threat of acid and alkali erosion on the outer fabric of firefighting suits.
关键词
两步涂层法/PDMS/PTFE‒ATP/消防服外层织物/疏水性能/固、液界面附着力/耐酸碱性能Key words
two‒step coating method/PDMS/PTFE‒ATP/outer fabric of fire suit/hydrophobicity/solid‒liquid interface adhesion/acid and alkali resistance引用本文复制引用
出版年
2024
NETL
NSTL
万方数据