Bio-Based Rigid Polyurethane Foams for Cryogenic Insulation

作     者：Laima Vevere Beatrise Sture Vladimir Yakushin Mikelis Kirpluks Ugis Cabulis 

作者机构：Latvian State Institute of Wood ChemistryRigaLV-1006Latvia 

出 版 物：《Journal of Renewable Materials》 (可再生材料杂志（英文）)

年 卷 期：2024年第12卷第3期

页      面：585-602页

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 0907[农学-林学] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 

基　　金：funded by projects“Smart Materials,Photonics,Technologies and Engineering Ecosystem(MOTE)”(Contract No.VPP-EM-FOTONIKA-2022/1-0001) “Bio-Based Cryogenic Insulation for Aerospace Application(BioSpace)”(Contract No.4000135271/21/NL/SC) 

主　　题：Cryogenic insulation polyurethanes tall oil 4th generation physical blowing agents 

摘      要：Cryogenic insulation material rigid polyurethane(PU)foams were developed using bio-based and recycled *** obtained from tall oil fatty acids produced as a side stream of wood biomass pulping and recycled polyethylene terephthalate were used to develop rigid PU foam *** 4th generation physical blowing agents with low global warming potential and low ozone depletion potential were used to develop rigid PU foam cryogenic insulation with excellent mechanical and thermal *** rigid PU foams had a thermal conductivity coefficient as low as 0.0171 W/m·K and an apparent density of 37-40 kg/m^(3).The developed rigid PU foams had anisotropic compression strength properties,which were higher parallel to the foaming ***,the compression strength was also influenced by the type of applied bio-based *** bio-based polyols with higher OH group functionality delivered higher crosslinking density of polymer matrix;thus,the mechanical properties were also *** mechanical strength of the foams increased when materials were tested at liquid nitrogen temperature due to the stiffening of the polymer *** thermal properties of the developed materials were determined using differential scanning calorimetry,dynamic mechanical analysis,and thermogravimetric analysis ***,the developed rigid PU foams had good adhesion to the aluminium substrate before and after applying cyroshock and an excellent safety coefficient of *** PU foams developed using Solstice LBA delivered adhesion strength of~0.5 MPa and may be considered for application as cryogenic insulation in the aerospace industry.