Preparation and Characterization of Sandwich Structured Materials with Interesting Insulation and Fire Resistance

作     者：Haizhu Wu Jinxing Li Shouhu Bao Fuxian Yang Jun Zhang Hisham Essawy Guanben Du Xiaojian Zhou 

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.