Preparation and Characterization of Sandwich Structured Materials with Interesting Insulation and Fire Resistance
作者机构:Yunnan Provincial Key Laboratory of Wood Adhesives and Glued ProductsSouthwest Forestry UniversityKunming650224China Department of Polymers and PigmentsNational Research CentreCairo12622Egypt
出 版 物:《Journal of Renewable Materials》 (可再生材料杂志(英文))
年 卷 期:2022年第10卷第8期
页 面:2029-2039页
核心收录:
学科分类:0907[农学-林学] 08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程(可授工学、理学学位)]
基 金:National Natural Science Foundation of China(NSFC 31760187,31971595) Yunnan Provincial Natural Science Foundation(2017FB060) the“Ten-thousand Program”–Youth Talent Support Program and Yunnan Provincial Reserve Talents for Middle&Young Academic and Technical Leaders(2019HB026) the 111 Project(D21027)
主 题:Building materials tannin resin sandwich structure insulation fire resistance
摘 要:A cellular material in the form of 3-layered sandwich structure material was prepared via sole use of mechanical stirring without any use of a foaming agent,while Tween-80 was employed as a foam stabilizer via a developed in-situ mold *** resulting structure displayed a good appearance with no visual *** 3-layered composition of the sandwish structure,“nonporous resin layer-porous foam layer-nonporous resin layer,was examined in terms of the microstructure,density&density distribution,pulverization ratio,mechanical strength,insulation and flame retardant *** was indicated from the results that the bonding between the resin layer and foam layer was tight,while the tensile rupture always occurred in the porous ***,the density of the sandwich structure material was symmetrical with“saddledistribution,and a uniform density for any given *** increase in the density at the interface layer provided a good interpretation for the tensile rupture never occurred at the *** brittleness resistance of the developed material was significantly improved,and the pulverization ratio was sharply decreased from 9.93%to 0.31%.The material acquired a thermal conductivity and limiting oxygen index(LOI)of 0.0241 W/m⋅K and 29.92%,respectively,indicating potential use of such materials broadly in fields of insulation and flame retardancy.