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首页> 外文期刊>Journal of Applied Polymer Science >Experimental evaluation of the hydrothermal stability of a silicone/zeolite composite foam for solar adsorption heating and cooling application
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Experimental evaluation of the hydrothermal stability of a silicone/zeolite composite foam for solar adsorption heating and cooling application

机译：太阳能吸附加热和冷却应用硅胶/沸石复合泡沫水热稳定性的实验评价

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摘要

This article evaluates the hydrothermal and mechanical stability of an adsorbent composite foam based on zeolite silicone for application in adsorption heat pump. The adsorption properties of the fresh composite adsorbents and their morphological features were already presented in previous papers. In the present work, hydrothermal aging of composite foams, at varying SAPO-34 zeolite contents and under real operating conditions, was carried out in order to verify the stability of the synthetized material. This improvement of knowledge is a key point for the industrial application. This evaluation was successfully performed by means of adsorption measurements and compression test on aged samples, up to 1500 aging cycles. The adsorption properties of composite foams are effective and stable up to the maximum number of cycles of the aging process. Instead, from the mechanical point of view, composite foams with high content of zeolite, aged at long cycles, evidenced a slight stiffening that stimulates mechanical brittle behavior. The composite foam with 67% zeolite filler represents a threshold value beyond which the action of the hydrothermal aging implies a significant loss of flexibility and mechanical integrity, which limits its applicability under typical conditions. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48311.
机译：本文评估基于沸石硅氧烷的吸附剂复合泡沫的水热和机械稳定性，用于吸附热泵。新鲜复合吸附剂的吸附性能及其形态特征已经呈现在先前的论文中。在本作工作中，进行复合泡沫的水热老化，在不同的SAPO-34沸石含量和实际操作条件下进行，以验证合成材料的稳定性。这种知识的改进是工业应用的关键点。通过对老化样品的吸附测量和压缩试验成功进行该评估，高达1500次老化循环。复合泡沫的吸附性能有效且稳定于老化过程的最大循环次数。相反，从机械的角度来看，具有高沸石含量的复合泡沫，长期老化，显着刺激机械脆性行为。具有67％沸石填料的复合泡沫代表阈值，超出了水热老化的作用意味着柔韧性和机械完整性的显着损失，这限制了其在典型条件下的适用性。 （c）2019 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019,136,48311。

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