A novel strategy to endow aluminum trihydrate-filled ethylene vinyl acetate composite with excellent flame retardancy, mechanical property and acid/alkali corrosion resistance concurrently

IF 6.5 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Communications Pub Date : 2025-02-27 DOI:10.1016/j.coco.2025.102329

Haoqi Xing , Zhuoli Yu , Mengna Liu , Xuefan Yang , Jichun Liu , Haibo Chang , Bingli Pan

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引用次数: 0

Abstract

Low efficiency and poor acid/alkali corrosion resistance are the main drawbacks of aluminum trihydrate (ATH) as a flame retardant to polymers. Herein, ethylene vinyl acetate (EVA) was chosen as polymer matrix and a blend of EVA18 (EVA with 18 % VA) and EVA40 (EVA with 40 % VA) was crosslinked properly. A composite flame retardant of microencapsulated expandable graphite/microencapsulated red phosphorus (MEG/MRP) was introduced to crosslinked EVA (CLEVA) blend/ATH composite. The obtained CLEVA blend/ATH/MEG/MRP composite was investigated regarding its various properties. Results evince that up to 65 wt% ATH has to be used in order to confer adequate flame retardance on EVA due to its low efficiency, and the mechanical performance of EVA is worsened markedly. The CLEVA blend/ATH/MEG/MRP composite with 24 wt% ATH, 5 wt% MEG and 1 wt% MRP shows excellent flame retardancy, mechanical property, acid/alkali corrosion resistance and electrical insulation concurrently. Especially, both strength and elasticity of flame-retarded CLEVA blend/ATH/MEG/MRP composite are better than those of neat EVA. Remarkable synergism between ATH and MEG/MRP is found in CLEVA, which has increased flame-retardant efficiency significantly. The increase in mechanical property derives mainly from crosslinking of polymer blend and the intumescent char produced by MEG upon combustion contributes greatly to the enhanced flame retardancy and corrosion resistance. This work develops a simple and novel strategy to overcome the handicaps of ATH and acquires flame-retarded EVA/ATH composite with excellent comprehensive properties.

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来源期刊

Composites Communications Materials Science-Ceramics and Composites

CiteScore

12.10

自引率

10.00%

发文量

340

审稿时长

36 days

期刊介绍： Composites Communications (Compos. Commun.) is a peer-reviewed journal publishing short communications and letters on the latest advances in composites science and technology. With a rapid review and publication process, its goal is to disseminate new knowledge promptly within the composites community. The journal welcomes manuscripts presenting creative concepts and new findings in design, state-of-the-art approaches in processing, synthesis, characterization, and mechanics modeling. In addition to traditional fiber-/particulate-reinforced engineering composites, it encourages submissions on composites with exceptional physical, mechanical, and fracture properties, as well as those with unique functions and significant application potential. This includes biomimetic and bio-inspired composites for biomedical applications, functional nano-composites for thermal management and energy applications, and composites designed for extreme service environments.