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.

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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.