非膨胀型改性海泡石纤维防火涂料的制备及其防火性能  

Modified Seafoam Fibers for Improving Fire Performance of Non-Intumescent Fire Coatings

作　　者：薛永刚 高金宝 刘奕岑 方云超 李严 XUE Yonggang;GAO Jinbao;LIU Yicen;FANG Yunchao;LI Yan(Hebei Chenxiang Industry Co.,Ltd.,Shijiazhuang 050500,China;School of Computer Technology,Hebei Vocational University of Industry and Technology,Shijiazhuang 050091,China;Materials Science and Engineering,China University of Geosciences Beijing,Beijing 100083,China;Materials Science and Engineering,Beijing University of Technology,Beijing 100124,China;BBMG Coatings Co.,Ltd.,Beijing 100096,China)

机构地区：[1]河北辰翔实业股份有限公司,石家庄050500 [2]河北工业职业技术大学计算机技术学院,石家庄050091 [3]中国地质大学(北京)材料科学与工程学院,北京100083 [4]北京工业大学材料科学与工程学院,北京100124 [5]北京金隅涂料有限责任公司,北京100096

出　　处：《硅酸盐学报》2025年第3期666-674,共9页Journal of The Chinese Ceramic Society

摘　　要：近年来,对于钢结构防火涂料中非膨胀型防火涂料的研究主要关注于新型隔热填料的开发。开发具有更低导热系数的隔热填料,形成更加稳定的隔热防火涂层成为目前研究的重点。本工作通过添加水镁石纤维和氧化硅纤维及一些高分子改性剂,制备得到改性海泡石纤维,并将其应用于非膨胀型防火涂料当中,使其具有更慢的升温速率,抗裂性能更高。在防火涂料中添加20%改性海泡石纤维时,其有效防火时间可达185 min,同时具有0.042 MPa的粘结强度和0.461 MPa的抗压强度,与其他防火材料相比,表现出更加出色的防火隔热性能。本工作为非膨胀型防火材料的新型隔热填料提供了新的方案,具有较高的市场应用价值及发展前景。Introduction Steel building is a form of construction.Non-intumescent fireproofing materials have superior fireproofing effects and can provide effective fireproofing and thermal insulation protection for steel structures.However,the modification and innovation of non-intumescent fireproofing materials are insufficient in China at present.Seafoam has a good thermal stability and a low thermal conductivity,having a thermal insulation effect,which can be used as a filler for fireproof coating or fireproof board.Seafoam can effectively improve the fire resistance of fireproof coating or fireproof board.Seafoam mineral fibers dispersed in a low concentration solution can form a stable high-viscosity suspension,so they can be dispersed and modified with other fillers and added to fireproof coating or fireproof board slurry.Therefore,the fire performance of seafoam fiber fireproofing materials can be improved.In this work,a modified seafoam fiber was added to fireproof coatings for improving the fire performance of non-intumescent fireproof coatings.This modified fiber as a kind of modified fiber was prepared via mixing seafoam fiber,magnesium hydroxide fiber and silicon oxide fiber under high-speed mixing and adding polymer modifier.In addition,the physical and chemical properties and fire performance of the finished product were also analyzed.Methods In this work,5-70 mm hydromagnesite fibers were ground in a mill to obtain the fibers with the lengths of<5 mm.Subsequently,1-5 mm seafoam fibers and 3-6 mm silicon oxide fibers were selected,and 50%seafoam fibers,30%hydromagnesite fibers,8%silicon oxide fibers,5%organic bentonite,1%polymer water-absorbent resins,1%starch ether,5%hydroxypropyl methyl cellulose ether were mixed as raw materials in a dry mixer for 30 min to obtain the modified seafoam fibers.The modified seafoam fibers were analyzed based on the physical phase characterization.Cement,kaolin,modified fiber,and fire protection additives in different weight ratios were added to the dry mixer and stirred for 3

关 键 词：海泡石纤维 水镁石纤维 氧化硅纤维 非膨胀型防火涂料 钢结构 

分 类 号：TU545[建筑科学—建筑技术科学]