{"title":"Construction of dense SiO2 layers by ferric phytate to enhance flame retardancy of polydimethylsiloxane foam composites","authors":"Mengmeng Yang, Xin He, Yong Fang, Hu Bi, Guodong Jiang, Yucai Shen","doi":"10.1016/j.matlet.2025.138486","DOIUrl":null,"url":null,"abstract":"<div><div>Polydimethylsiloxane (PDMS) foam is a widely used porous material with excellent properties across various fields. However, its flammability poses a significant challenge to its broader application. In this study, ferric phytate (PA-Fe) was introduced as a novel flame retardant into PDMS foam. Experimental and molecular dynamics (MD) simulation results reveal that its exceptional flame retardancy derives from the formation of dense SiO<sub>2</sub> layers induced by Fe<sup>3+</sup> during combustion. These SiO<sub>2</sub> layers exhibit more dense structure compared to those generated by pure PDMS foam combustion, providing the foam with enhanced self-extinguishing properties. This study offers a novel strategy for developing highly flame-retardant silicone materials.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"391 ","pages":"Article 138486"},"PeriodicalIF":2.7000,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Letters","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0167577X25005154","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Polydimethylsiloxane (PDMS) foam is a widely used porous material with excellent properties across various fields. However, its flammability poses a significant challenge to its broader application. In this study, ferric phytate (PA-Fe) was introduced as a novel flame retardant into PDMS foam. Experimental and molecular dynamics (MD) simulation results reveal that its exceptional flame retardancy derives from the formation of dense SiO2 layers induced by Fe3+ during combustion. These SiO2 layers exhibit more dense structure compared to those generated by pure PDMS foam combustion, providing the foam with enhanced self-extinguishing properties. This study offers a novel strategy for developing highly flame-retardant silicone materials.
期刊介绍：
Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review.
Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials.
Contributions include, but are not limited to, a variety of topics such as:
• Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors
• Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart
• Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction
• Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots.
• Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing.
• Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic
• Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive
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