Journal of Vinyl & Additive Technology最新文献_第10页

Polyborosilazane-Modified Silicone Rubber Composites With Ceramifiable Self-Supporting Property and Their Ablation Resistance 具有陶瓷化自支撑性能的聚硼硅氮烷改性硅橡胶复合材料及其抗烧蚀性能

IF 3.6 4区工程技术

Journal of Vinyl & Additive Technology Pub Date : 2026-01-08 Epub Date: 2025-08-24 DOI: 10.1002/vnl.70020

Hongfei Chen, Xiaolong Qu, Jingwen Wang, Mengmeng Ge, Yanfeng Gao

{"title":"Polyborosilazane-Modified Silicone Rubber Composites With Ceramifiable Self-Supporting Property and Their Ablation Resistance","authors":"Hongfei Chen, Xiaolong Qu, Jingwen Wang, Mengmeng Ge, Yanfeng Gao","doi":"10.1002/vnl.70020","DOIUrl":"10.1002/vnl.70020","url":null,"abstract":"<div>\u0000 \u0000 <p>High-performance anti-ablation silicone rubber materials play a crucial role in the thermal protection systems of electric vehicle battery packs. However, conventional flame-retardant silicone rubbers containing fillers often suffer from poor ablation resistance at high temperatures and inadequate structural integrity. In this work, a novel approach was proposed in which the liquid ceramic precursor polyborosilazane (PBSZ) was incorporated into methyl vinyl silicone rubber via melt blending to construct a ceramic-forming network, thereby preparing ceramifiable, flame-retardant composite materials. Compared with unmodified silicone rubber, the composite containing 6 wt% PBSZ exhibited a 78°C increase in initial decomposition temperature, achieved a limiting oxygen index (LOI) of 25.6%, and reached a flexural strength of 12.68 MPa after treatment at 1000°C. Furthermore, after exposure to a 1000°C flame for 1 min, the back-surface temperature remained below 300°C. As the temperature increases, the flexible silicone rubber undergoes ceramization, forming a dense and stable ceramic structure. This work provides a promising strategy for the development of high-performance, flexible, and ablation-resistant materials.</p>\u0000 </div>","PeriodicalId":17662,"journal":{"name":"Journal of Vinyl & Additive Technology","volume":"32 1","pages":"65-76"},"PeriodicalIF":3.6,"publicationDate":"2026-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145941817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Surface Functionalization of Expandable Graphite With Carboxymethyl Cellulose for Enhanced Dispersion and Flame-Retardant Performance in Waterborne Coatings 羧甲基纤维素增强水性涂料分散性和阻燃性能的可膨胀石墨表面功能化研究

IF 3.6 4区工程技术

Journal of Vinyl & Additive Technology Pub Date : 2026-01-08 Epub Date: 2025-08-16 DOI: 10.1002/vnl.70018

Tae Young Kim, Jin Hwan Park, Seo-Jin Kang, Oh Young Kim, Seok-Ho Hwang

{"title":"Surface Functionalization of Expandable Graphite With Carboxymethyl Cellulose for Enhanced Dispersion and Flame-Retardant Performance in Waterborne Coatings","authors":"Tae Young Kim, Jin Hwan Park, Seo-Jin Kang, Oh Young Kim, Seok-Ho Hwang","doi":"10.1002/vnl.70018","DOIUrl":"10.1002/vnl.70018","url":null,"abstract":"<div>\u0000 \u0000 <p>Expandable graphite (EG) is a widely used halogen-free flame-retardant additive; however, its poor hydrophilicity and tendency to agglomerate in aqueous media significantly hinder its dispersion and performance in waterborne intumescent flame-retardant (IFR) coatings. To address these limitations, this study presents a sustainable surface modification strategy that enhances both the dispersibility and flame-retardant functionality of EG. EG was chemically oxidized and subsequently functionalized with sodium carboxymethyl cellulose (CMC) via an epoxy-mediated grafting reaction using phenol novolac epoxy resin as a coupling agent. The resulting CMC-modified EG (CMC-<i>m</i>-EG) exhibited improved hydrophilicity, as confirmed by a decrease in water contact angle from 79.7° to 52.7°, and retained substantial thermal expansion capability (160 mL/g) despite surface coating. X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analyses confirmed successful intercalation and covalent functionalization without significant structural disruption. Incorporation of CMC-<i>m</i>-EG into an acrylic binder resulted in enhanced dispersion, smoother coating morphology, and improved interfacial adhesion. Compared to unmodified EG, CMC-<i>m</i>-EG-containing coatings demonstrated superior mechanical properties and flame retardancy, including an increased limiting oxygen index (LOI) of 25%, and a reduced peak heat release rate (HRR) of 364.4 kW/m<sup>2</sup>, compared to 793.8 and 941.5 kW/m<sup>2</sup> for the EG and neat coatings, respectively. These results highlight the potential of CMC-<i>m</i>-EG as a high-performance additive for waterborne IFR systems.</p>\u0000 </div>","PeriodicalId":17662,"journal":{"name":"Journal of Vinyl & Additive Technology","volume":"32 1","pages":"46-54"},"PeriodicalIF":3.6,"publicationDate":"2026-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145941679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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IF 3.6 4区工程技术

Journal of Vinyl & Additive Technology Pub Date : 2025-12-06

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IF 3.6 4区工程技术

Journal of Vinyl & Additive Technology Pub Date : 2025-12-06

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IF 3.6 4区工程技术

Journal of Vinyl & Additive Technology Pub Date : 2025-12-04

引用次数: 0

IF 3.6 4区工程技术

Journal of Vinyl & Additive Technology Pub Date : 2025-12-02