The curing kinetics and properties of self-healing and thermally conductive polymeric composites based on ethylene vinyl acetate copolymer filled with nano alumina

IF 2.1 4区材料科学 Q3 MATERIALS SCIENCE, COATINGS & FILMS

Journal of Plastic Film & Sheeting Pub Date : 2024-05-28 DOI:10.1177/87560879241251901

Hongyi Lin, Yuchi Zhang, Renjin Gao, Liwei Wang, Jianrong Xia, Hanyu Xue

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引用次数: 0

Abstract

We have investigated a self-healing thermally conductive Ethylene-vinyl acetate (EVA) hot melt adhesive (NAEDS, which denotes the addition of nano-alumina and disulfide bonded EVA hot melt adhesives) that can be used to effectively solve adhesive layer separation problem in photovoltaic (PV) modules and the difficulty of recycling. More specifically, we used diallyl disulfide as a cross-linking agent for EVA and alumina nanofillers as a reinforcing phase. The nano alumina filler gave the EVA better thermal conductivity. We used FTIR, SEM, and DSC to characterize and analyze NAEDS properties. The disulfide bonds in NAEDS underwent a rearrangement reaction under ultraviolet light, resulting in the self-healing of the resin (self-healing efficiency of 78.8%). The added nano alumina not only reduced the resin curing activation energy, improving its curing performance but also enhanced its thermal conductivity, achieving a 2.61 W/(m*k) thermal conductivity coefficient. The overall NAEDS performance is improved.

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基于填充纳米氧化铝的乙烯-醋酸乙烯共聚物的自愈合导热聚合物复合材料的固化动力学和性能

我们研究了一种自愈合导热乙烯-醋酸乙烯（EVA）热熔胶（NAEDS，表示添加纳米氧化铝和二硫化物粘合的 EVA 热熔胶），它可用于有效解决光伏（PV）模块中的胶层分离问题和回收困难问题。具体而言，我们使用二烯丙基二硫化物作为 EVA 的交联剂，并使用纳米氧化铝填料作为增强相。纳米氧化铝填料使 EVA 具有更好的导热性。我们使用傅立叶变换红外光谱（FTIR）、扫描电子显微镜（SEM）和电热恒温分析仪（DSC）来表征和分析 NAEDS 的特性。在紫外线照射下，NAEDS中的二硫键发生了重排反应，从而实现了树脂的自愈合（自愈合效率为78.8%）。添加的纳米氧化铝不仅降低了树脂的固化活化能，改善了其固化性能，还提高了其导热性能，导热系数达到 2.61 W/（m*k）。NAEDS 的整体性能得到了改善。

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来源期刊

Journal of Plastic Film & Sheeting 工程技术-材料科学：膜

CiteScore

6.00

自引率

16.10%

发文量

审稿时长

>12 weeks

期刊介绍： The Journal of Plastic Film and Sheeting improves communication concerning plastic film and sheeting with major emphasis on the propogation of knowledge which will serve to advance the science and technology of these products and thus better serve industry and the ultimate consumer. The journal reports on the wide variety of advances that are rapidly taking place in the technology of plastic film and sheeting. This journal is a member of the Committee on Publication Ethics (COPE).