Viscoelastic and Thermal Properties of Polyurethane Foams Obtained from Renewable and Recyclable Components  

作　　者：S.Gaidukovs G.Gaidukova A.Ivdre U.Cabulis 

机构地区：[1]Faculty of Material Science and Applied Chemistry,Institute of Polymer Materials,Riga Technical University,3/7 Paula Valdena St.,LV 1048,Riga,Latvia [2]Faculty of Material Science and Applied Chemistry,Institute of Applied Chemistry,Riga Technical University,3/7 Paula Valdena St.,LV 1048,Riga,Latvia [3]Latvian State Institute of Wood Chemistry,27 Dzerbenes St.,LV-1006,Riga,Latvia

出　　处：《Journal of Renewable Materials》2018年第7期755-763,共9页可再生材料杂志（英文）

摘　　要：This article deals with the study of the viscoelastic and thermal properties of polyurethane (PU) rigid foamsfrom biobased and recycled components. Rapeseed oil (RO) and recycled poly(ethylene terephthalate)(PET) were used to synthesize PU polyols. Addition of adipic acid (ADA) to polyol resulted in improvedthermal and viscoelastic properties of foam materials. ADA content was varied from 1 to 6 wt%. Results ofthe dynamic mechanical spectra indicate an increase of the storage modulus E′ and the loss modulus E″ inthe whole temperature range for specimens with higher loading of ADA. In addition, damping factor shiftedto higher temperatures, but damping intensity remained almost unaffected by the compositions. Scanningelectron microscopy of the foams’ cross sections testified that the average cells’ size of 110 mm was unaffectedby the ADA content in polyol.

关 键 词：Polyurethane rigid foam rapeseed oil recycled poly(ethylene terephthalate) viscoelastic properties THERMALPROPERTIES 

分 类 号：O63[理学—高分子化学]