Tough and soundproof PBAT/PLA composite foams with a multilayer oriented porous architecture

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

Composites Communications Pub Date : 2025-04-10 DOI:10.1016/j.coco.2025.102402

Feng Chen , Ruijie Shen , Jikai Ye , Ziyi Liu , Tong Liu , Zhengjian Chen , Tairong Kuang , Jiangming Jin , Yanpei Fei

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引用次数: 0

Abstract

Foam materials have a wide range of application prospects in the fields of construction engineering and transport due to their excellent lightweight, thermal insulation and sound absorption properties. However, common polymeric foams with homogeneous porous structure, showed insufficient compressive moduli and weak sound insulation (STL value). In this research, series sandwich Poly (butylene adipate-co-terephthalate) (PBAT)/Polylactic acid (PLA) composite foams were toughened by using a pressure-induced flow (PIF) treatment, following an ScCO₂ foaming process. The test results show that PIF treatment could greatly increase the compressive strength and the sound insulation performance due to the significant sandwich phase morphology and oriented porous structure in PBAT/PLA composite foams. The average sound insulation in the frequency range of 500∼6400 Hz reaches average 30 dB. With the assistance of COMSOL Multiphysics software for modeling and analysis of the experimental results, the simulation of the sound insulation curve obtained and the experimental results match well. The finite element analysis results show that the multilayer oriented bubble structure of PIF PBAT/PLA improves the sound insulation performance of the foam material to a certain extent.

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具有多层定向多孔结构的PBAT/PLA复合泡沫材料

泡沫材料由于其优异的轻质、保温、吸声性能，在建筑工程、交通运输等领域有着广泛的应用前景。而普通泡沫聚合物的孔隙结构均质，压缩模量不足，隔声能力较弱。在本研究中，在ScCO2发泡工艺之后，采用压力诱导流动（PIF）处理系列夹层聚己二酸丁二酯(PBAT)/聚乳酸（PLA）复合泡沫。试验结果表明，PIF处理后的PBAT/PLA复合泡沫材料具有明显的夹层相形态和定向多孔结构，可显著提高其抗压强度和隔声性能。在500 ~ 6400 Hz的频率范围内，平均隔声达到平均30 dB。利用COMSOL Multiphysics软件对实验结果进行建模和分析，仿真得到的隔声曲线与实验结果吻合较好。有限元分析结果表明，PIF PBAT/PLA多层定向气泡结构在一定程度上提高了泡沫材料的隔声性能。

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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.