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首页> 外文期刊>Journal of Applied Polymer Science >Incorporation of postconsumer polyurethane foam into a polymer/clay aerogel matrix
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Incorporation of postconsumer polyurethane foam into a polymer/clay aerogel matrix

机译：将消费后聚氨酯泡沫混入聚合物/粘土气凝胶基质中

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摘要

The feasibility of incorporating ground recycled polyurethane (PU) foam into clay/polymer aerogels was demonstrated, and a range of compositions were prepared and characterized to determine the effect of variation in the formulations on density and mechanical properties of the resulting materials. This study followed a modified combinatorial approach. Initially, experiments were performed in water using either sodium exchanged montmorillonite or laponite clay, poly(vinyl alcohol) (PVOH) solution as the polymer binder, and the recycled PU foam. Freezing and freeze-drying the aqueous gels produced aerogels, which were characterized through density and mechanical testing, scanning electron microscopy, and thermal gravimetric analysis. The study was expanded by exploring alternative binder chemistries, including the use of an alginate polymer in place of the PVOH or adding a polyisocyanate as a crosslinking agent for PVOH. The effect of recycled PU foam content, clay type and level, and binder type and level on the mechanical properties of the aerogels were determined and will be discussed herein. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42586.
机译：证明了将磨碎的回收聚氨酯（PU）泡沫掺入粘土/聚合物气凝胶的可行性，并制备了一系列组合物并进行了表征，以确定配方变化对所得材料的密度和机械性能的影响。这项研究遵循了一种改进的组合方法。最初，使用钠交换的蒙脱石或锂皂石粘土，聚乙烯醇（PVOH）（PVOH）溶液作为聚合物粘合剂以及再生的PU泡沫在水中进行实验。将含水凝胶冷冻并冷冻干燥，制得气凝胶，通过密度和机械测试，扫描电子显微镜和热重分析对其进行表征。通过探索替代的粘合剂化学方法，包括使用藻酸盐聚合物代替PVOH或添加多异氰酸酯作为PVOH的交联剂，扩大了研究范围。确定了再循环的PU泡沫含量，粘土类型和含量以及粘合剂类型和含量对气凝胶机械性能的影响，并将在本文中进行讨论。 （c）2015 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，42586。

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