新型亚微米级聚苯乙烯泡沫的热导率分析

IF 3.2 4区工程技术 Q2 CHEMISTRY, APPLIED

Journal of Cellular Plastics Pub Date : 2020-10-06 DOI:10.1177/0021955X20943101

FA Almeida, H. Beyrichen, N. Dodamani, R. Caps, A. Müller, R. Oberhoffer

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引用次数: 5

摘要

介绍了具有亚微米孔径和开孔结构的新型聚苯乙烯(PS)泡沫材料作为真空绝热板(vip)的潜在芯材。介绍了充气和真空PS泡沫的导热系数λ的测量，以及温度T、不透明剂和气体压力p对导热系数λ的影响。通过电子显微镜观察到的泡沫微观结构的初步结果证实，可以实现小于1µm的孔径。在约7 mW/(m·K)的真空条件下，测量了先进样品的导热系数。

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Thermal conductivity analysis of a new sub-micron sized polystyrene foam

New polystyrene (PS) foams with submicron pore sizes and open pore structure are introduced as potential cores for vacuum insulation panels (VIPs). Measurements of the thermal conductivity λ of the air-filled and evacuated PS foams, the influence of temperature T, opacifiers as well as gas pressure p on the thermal conductivity λ are presented. First results of the foam microstructures, as visualized by electron microscopy, confirm that pore sizes below 1 µm can be achieved. Thermal conductivity values of advanced samples in vacuum of about 7 mW/(m·K) were measured.

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来源期刊

Journal of Cellular Plastics 工程技术-高分子科学

CiteScore

5.00

自引率

16.00%

发文量

审稿时长

3 months

期刊介绍： The Journal of Cellular Plastics is a fully peer reviewed international journal that publishes original research and review articles covering the latest advances in foamed plastics technology.