Development of multifunctional passive cooling PE composites with high reflectivity and flame retardancy by combining inorganic flame retardant and organic aromatic compound

IF 3.8 4区工程技术 Q2 CHEMISTRY, APPLIED

Journal of Vinyl & Additive Technology Pub Date : 2024-09-27 DOI:10.1002/vnl.22168

Kesong Wang, Xiaofei Wang, Yanli Qi, Tingting Chen, Jun Zhang

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引用次数: 0

Abstract

In recent years, the pressing issue of energy problems has led to increased interest in passive cooling materials due to their energy-saving potential. In this work, antimony trioxide (Sb₂O₃) and decabromodiphenylethane (DBDPE) were added into polyethylene (PE) composites to obtain cooling materials with high reflectivity and flame retardancy. With 7 wt% Sb₂O₃ and 21 wt% DBDPE, the reflectance of samples in all solar wavelengths was greatly improved by at least 47.76%. Furthermore, the internal temperature of the self-designed temperature test device was reduced from 47.1 to 28.4 °C with a sunlight simulator at a light intensity of 1000 W/m² for 1 h at an indoor temperature of 25 °C. In addition, the UL-94 vertical flammability rating was upgraded from No Rating to V-0, and the limiting oxygen index value increased by at least 6.2%. The selection of a PE matrix with a higher degree of crystallinity resulted in enhanced mechanical properties. These multifunctional PE composites have the advantage in its high reflectance across all solar wavelengths and relatively good flame retardancy. Evidently, resultant characteristics make these composites potential candidates for application in the passive cooling field.

Highlights

Inorganic and organic particles were incorporated into the PE matrix.
Multifunctional reflective cooling composites were prepared.
The factors affecting the reflectivity of composites were analyzed.

Abstract Image

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近年来，由于能源问题的紧迫性，人们对被动冷却材料的节能潜力越来越感兴趣。本文将三氧化二锑（Sb2O3）和十溴二甲基苯乙烷（DBDPE）添加到聚乙烯（PE）复合材料中，获得了具有高反射率和阻燃性的冷却材料。当Sb2O3质量分数为7 wt%， DBDPE质量分数为21 wt%时，样品在所有太阳波长下的反射率至少提高了47.76%。在室内温度为25℃、光照强度为1000 W/m2、光照模拟器照射1 h的条件下，将自行设计的温度测试装置内部温度从47.1℃降至28.4℃。UL-94的垂直可燃性等级由无级提升至V-0级，极限氧指数提高至少6.2%。选用结晶度较高的聚乙烯基体，提高了材料的力学性能。这些多功能PE复合材料在所有太阳波长的高反射率和相对较好的阻燃性方面具有优势。显然，复合材料的合成特性使其在被动冷却领域具有潜在的应用前景。无机和有机颗粒被掺入PE基质中。制备了多功能反射冷却复合材料。分析了影响复合材料反射率的因素。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Vinyl & Additive Technology 工程技术-材料科学：纺织

CiteScore

5.40

自引率

14.80%

发文量

审稿时长

>12 weeks

期刊介绍： Journal of Vinyl and Additive Technology is a peer-reviewed technical publication for new work in the fields of polymer modifiers and additives, vinyl polymers and selected review papers. Over half of all papers in JVAT are based on technology of additives and modifiers for all classes of polymers: thermoset polymers and both condensation and addition thermoplastics. Papers on vinyl technology include PVC additives.