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首页> 外文期刊>Journal of Applied Polymer Science >Water-Blown Polyurethane/Polyisocyanurate Foams Made from Recycled Polyethylene Terephthalate and Liquefied Wood-Based Polyester Polyol
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Water-Blown Polyurethane/Polyisocyanurate Foams Made from Recycled Polyethylene Terephthalate and Liquefied Wood-Based Polyester Polyol

机译：再生聚对苯二甲酸乙二醇酯和液化木基聚酯多元醇制得的水性聚氨酯/聚异氰脲酸酯泡沫

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摘要

Depolymerized polyethylene terephthalate and liquefied wood polyesters can be used as a polyol for the production of polyurethane/polyisocyanurate foams. In this research, liquefied wood was synthesized by using a combination of diethylene glycol and glycerol and due to the possibility of using glycerol that is a by-product in biodiesel production, our goal was to use as much glycerol in the liquefaction reagent as possible. We determined the properties of the polyols, properties of produced foams, and explained their correlation. Greater amount of glycerol in the liquefaction reagent resulted in higher OH number, molecular weight, functionality, and viscosity of the polyol, as well as in longer cream time and tack free time in foam preparation. Glass transition temperature, density, and water absorption of the foam increased with increasing amount of glycerol in liquefied wood. Compressive stress increased up to 30% of the glycerol in the reagent and then reduced, while thermal conductivity was not affected. (c) 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41522.
机译：解聚的聚对苯二甲酸乙二酯和液化的木质聚酯可用作多元醇，用于生产聚氨酯/聚异氰脲酸酯泡沫。在这项研究中，液化木材是通过使用二甘醇和甘油的组合来合成的，并且由于有可能使用生物柴油生产中的副产品甘油，因此我们的目标是在液化剂中使用尽可能多的甘油。我们确定了多元醇的性质，生产的泡沫的性质，并解释了它们的相关性。液化剂中甘油的含量越高，多元醇的OH值，分子量，官能度和粘度就越高，泡沫制备中的乳化时间和脱粘时间越长。泡沫的玻璃化转变温度，密度和吸水率随液化木材中甘油含量的增加而增加。压缩应力最多可增加试剂中甘油的30％，然后降低，而热导率不受影响。 （c）2014 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，41522。

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