反射冷却增塑型聚氯乙烯/沉淀硫酸钡复合材料在整个太阳波段的建筑屋顶应用的发展

IF 3.8 4区工程技术 Q2 CHEMISTRY, APPLIED Journal of Vinyl & Additive Technology Pub Date : 2023-09-06 DOI:10.1002/vnl.22038

Songcheng Han, Zhangbin Yang, Ling Zhang, Zhen Zhang, Jun Zhang

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引用次数: 0

摘要

硫酸钡（BaSO4）在整个太阳波段（280–2500）具有高反射率 nm）。在本研究中，采用熔融共混法将BaSO4掺入增塑聚氯乙烯（PVC）基体中。其目的是制造在太阳波段表现出优异反射冷却性能的复合材料，特别是用于建筑屋顶。通过将BaSO4的含量从0增加到200 phr，样品在太阳波段的总反射率有了显著的提高，从6%提高到48.8%。此外，样品的热导率也有了明显的提高，由0.178提高到0.262，提高了46.3% W m−1 K−1。此外，当在1000的太阳光强度下受到太阳模拟器的照射时 1的W/m2 h、室内模拟辐照温度从41.4°C降至27.4°C。制备了具有反射冷却性能的白色增塑聚氯乙烯（PVC）薄膜。BaSO4提高了PVC的太阳反射率和冷却性能。建立了BaSO4在PVC中的反射机理。

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Development of reflective cooling plasticized polyvinyl chloride/precipitated barium sulfate composites for building roof applications throughout entire solar wavebands

Barium sulfate (BaSO₄) has high reflectance throughout entire solar waveband (280–2500 nm). In this study, the melt blending method was used to incorporate BaSO₄ into a plasticized polyvinyl chloride (PVC) matrix. The aim was to create composites that exhibit excellent reflective cooling performance in the solar waveband, specifically for use in building roofs. By increasing the content of BaSO₄ from 0 to 200 phr, the total reflectance of the samples in the solar waveband showed significant improvement, rising from 6% to 48.8%. Furthermore, the thermal conductivity of the samples accordingly emerged apparent enhancement, increasing by 46.3% from 0.178 to 0.262 W m⁻¹ K⁻¹. Additionally, when subjected to irradiation by a solar simulator under a solar light intensity of 1000 W/m² for 1 h, the indoor simulated irradiation temperature decreased from 41.4 to 27.4°C.

Highlights

White plasticized polyvinyl chloride (PVC) films with reflective cooling performance were prepared.
The solar reflectance and cooling performance of PVC was enhanced by BaSO₄.
The reflectance mechanism of BaSO₄ in PVC was established.

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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.