介孔二氧化硅SBA-15内外表面的原位功能改性提高环氧树脂的防火安全性和热稳定性

IF 8 1区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY
Shuyang Shi , Shuxian Zheng , Kun Zeng , Liang Yue , Xianlai Zhang , Wenhui Rao , Chuanbai Yu
{"title":"介孔二氧化硅SBA-15内外表面的原位功能改性提高环氧树脂的防火安全性和热稳定性","authors":"Shuyang Shi ,&nbsp;Shuxian Zheng ,&nbsp;Kun Zeng ,&nbsp;Liang Yue ,&nbsp;Xianlai Zhang ,&nbsp;Wenhui Rao ,&nbsp;Chuanbai Yu","doi":"10.1016/j.conbuildmat.2025.140672","DOIUrl":null,"url":null,"abstract":"<div><div>The inflammability of epoxy resins (EPs) severely limits their safe and reliable application. The design and application of flame retardants has enormous potential for increasing the fire safety of EP composites. In the present study, a novel organic-inorganic nanohybrid material (VDSZ), consisting of mesoporous silica (SBA-15), P/N/Si-containing compound and the transition metal (Zn), was constructed by in-situ functional modification of the inner and outer surfaces of SBA-15. That is, Zn was in-situ modified on the inner pore surface of SBA-15, and phosphorus-containing compound was in-situ grafting onto outer surface of SBA-15 by Schiff base reaction. The results showed that EP/VDSZ-3 composite had a significant improvement in flame-retardant properties. The limiting oxygen index (LOI) for EP/VDSZ-3 increased from 24.5 % (EP) to 30.8 %, resulting in a UL-94 V-0 rating. Furthermore, the findings of the cone calorimeter test (CCT) demonstrated that, in comparison with pure EP, the peak heat release rate, total smoke generation and smoke production release of EP/VDSZ-3 decreased by 29.16 %, 25.95 %, and 30.90 % respectively. Moreover, the impact strength of EP/VDSZ-1 was 40 % higher than that of pure EP. Meanwhile, the thermal stability of EP composites improved dramatically as the VDSZ increased. This study found that creating a multi-level structure provided a fresh idea for simultaneously boosting polymer flame retardancy, smoke suppression and thermal stability, which will be applied to building materials with flame retardant requirements.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"471 ","pages":"Article 140672"},"PeriodicalIF":8.0000,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"In-situ functional modification of the inner and outer surfaces of mesoporous silica SBA-15 towards improving fire safety and thermal stability of epoxy resins\",\"authors\":\"Shuyang Shi ,&nbsp;Shuxian Zheng ,&nbsp;Kun Zeng ,&nbsp;Liang Yue ,&nbsp;Xianlai Zhang ,&nbsp;Wenhui Rao ,&nbsp;Chuanbai Yu\",\"doi\":\"10.1016/j.conbuildmat.2025.140672\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The inflammability of epoxy resins (EPs) severely limits their safe and reliable application. The design and application of flame retardants has enormous potential for increasing the fire safety of EP composites. In the present study, a novel organic-inorganic nanohybrid material (VDSZ), consisting of mesoporous silica (SBA-15), P/N/Si-containing compound and the transition metal (Zn), was constructed by in-situ functional modification of the inner and outer surfaces of SBA-15. That is, Zn was in-situ modified on the inner pore surface of SBA-15, and phosphorus-containing compound was in-situ grafting onto outer surface of SBA-15 by Schiff base reaction. The results showed that EP/VDSZ-3 composite had a significant improvement in flame-retardant properties. The limiting oxygen index (LOI) for EP/VDSZ-3 increased from 24.5 % (EP) to 30.8 %, resulting in a UL-94 V-0 rating. Furthermore, the findings of the cone calorimeter test (CCT) demonstrated that, in comparison with pure EP, the peak heat release rate, total smoke generation and smoke production release of EP/VDSZ-3 decreased by 29.16 %, 25.95 %, and 30.90 % respectively. Moreover, the impact strength of EP/VDSZ-1 was 40 % higher than that of pure EP. Meanwhile, the thermal stability of EP composites improved dramatically as the VDSZ increased. This study found that creating a multi-level structure provided a fresh idea for simultaneously boosting polymer flame retardancy, smoke suppression and thermal stability, which will be applied to building materials with flame retardant requirements.</div></div>\",\"PeriodicalId\":288,\"journal\":{\"name\":\"Construction and Building Materials\",\"volume\":\"471 \",\"pages\":\"Article 140672\"},\"PeriodicalIF\":8.0000,\"publicationDate\":\"2025-03-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Construction and Building Materials\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0950061825008207\",\"RegionNum\":1,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CONSTRUCTION & BUILDING TECHNOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Construction and Building Materials","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0950061825008207","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CONSTRUCTION & BUILDING TECHNOLOGY","Score":null,"Total":0}
引用次数: 0

摘要

环氧树脂(EPs)的易燃性严重限制了其安全可靠的应用。阻燃剂的设计和应用对提高EP复合材料的防火安全性具有巨大的潜力。本研究通过对介孔二氧化硅(SBA-15)、含P/N/ si化合物和过渡金属(Zn)进行原位功能修饰,构建了一种新型的有机-无机纳米杂化材料(VDSZ)。即在SBA-15的内孔表面对Zn进行原位修饰,并通过席夫碱反应将含磷化合物接枝到SBA-15的外表面。结果表明,EP/VDSZ-3复合材料的阻燃性能有明显改善。EP/VDSZ-3的极限氧指数(LOI)从24.5% % (EP)提高到30.8 %,达到UL-94的V-0等级。此外,锥量热测试(CCT)结果表明,与纯EP相比,EP/VDSZ-3的峰值放热率、总发烟量和产烟量分别降低了29.16 %、25.95 %和30.90 %。EP/VDSZ-1的冲击强度比纯EP高40 %。同时,随着VDSZ的增大,EP复合材料的热稳定性显著提高。本研究发现,创建多层结构为同时提高聚合物的阻燃性、抑烟性和热稳定性提供了新的思路,将应用于有阻燃要求的建筑材料。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
In-situ functional modification of the inner and outer surfaces of mesoporous silica SBA-15 towards improving fire safety and thermal stability of epoxy resins
The inflammability of epoxy resins (EPs) severely limits their safe and reliable application. The design and application of flame retardants has enormous potential for increasing the fire safety of EP composites. In the present study, a novel organic-inorganic nanohybrid material (VDSZ), consisting of mesoporous silica (SBA-15), P/N/Si-containing compound and the transition metal (Zn), was constructed by in-situ functional modification of the inner and outer surfaces of SBA-15. That is, Zn was in-situ modified on the inner pore surface of SBA-15, and phosphorus-containing compound was in-situ grafting onto outer surface of SBA-15 by Schiff base reaction. The results showed that EP/VDSZ-3 composite had a significant improvement in flame-retardant properties. The limiting oxygen index (LOI) for EP/VDSZ-3 increased from 24.5 % (EP) to 30.8 %, resulting in a UL-94 V-0 rating. Furthermore, the findings of the cone calorimeter test (CCT) demonstrated that, in comparison with pure EP, the peak heat release rate, total smoke generation and smoke production release of EP/VDSZ-3 decreased by 29.16 %, 25.95 %, and 30.90 % respectively. Moreover, the impact strength of EP/VDSZ-1 was 40 % higher than that of pure EP. Meanwhile, the thermal stability of EP composites improved dramatically as the VDSZ increased. This study found that creating a multi-level structure provided a fresh idea for simultaneously boosting polymer flame retardancy, smoke suppression and thermal stability, which will be applied to building materials with flame retardant requirements.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Construction and Building Materials
Construction and Building Materials 工程技术-材料科学:综合
CiteScore
13.80
自引率
21.60%
发文量
3632
审稿时长
82 days
期刊介绍: Construction and Building Materials offers an international platform for sharing innovative and original research and development in the realm of construction and building materials, along with their practical applications in new projects and repair practices. The journal publishes a diverse array of pioneering research and application papers, detailing laboratory investigations and, to a limited extent, numerical analyses or reports on full-scale projects. Multi-part papers are discouraged. Additionally, Construction and Building Materials features comprehensive case studies and insightful review articles that contribute to new insights in the field. Our focus is on papers related to construction materials, excluding those on structural engineering, geotechnics, and unbound highway layers. Covered materials and technologies encompass cement, concrete reinforcement, bricks and mortars, additives, corrosion technology, ceramics, timber, steel, polymers, glass fibers, recycled materials, bamboo, rammed earth, non-conventional building materials, bituminous materials, and applications in railway materials.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信