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

• 作者: A.Ivdre G.Gaidukova S.Gaidukovs U.Cabulis
• 来源期刊: 可再生材料杂志(英文)
• 学科: 化学
• 关键词: Polyurethane rigid foam RAPESEED oil recycled poly(ethylene terephthalate) VISCOELASTIC PROPERTIES thermal PROPERTIES
• 年，卷（期）: 2018,（7）
• 页码范围: 755-763
• 页数: 9页
• 分类号: O63

摘要

This article deals with the study of the viscoelastic and thermal properties of polyurethane (PU) rigid foams from 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 improved thermal and viscoelastic properties of foam materials. ADA content was varied from 1 to 6 wt%. Results of the dynamic mechanical spectra indicate an increase of the storage modulus E′ and the loss modulus E″ in the whole temperature range for specimens with higher loading of ADA. In addition, damping factor shifted to higher temperatures, but damping intensity remained almost unaffected by the compositions. Scanning electron microscopy of the foams’ cross sections testified that the average cells’ size of 110 mm was unaffected by the ADA content in polyol.