Synthesis of Phenyl and Vinyl Groups-Containing Silsesquioxane and Properties of Its Vinyl Ester Resin Composites

被引：0
|
作者：
Zhou H. [1 ]
Zhang Z. [1 ]
Zhang W. [1 ]
Yang R. [1 ]
Zhao H. [2 ]
Zhao S. [2 ]
机构：
[1] National Engineering Technology Research Center of Flame Retardant Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing
[2] Standards & Metrology Research Institute China Academy of Railway Sciences Co., Ltd., Beijing
来源：
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2024年 / 40卷 / 02期
关键词：
flame retardancy; mechanical property; phenyl and vinyl groups- containing polyhedral oligomeric silsesquioxane; vinyl ester resin;
D O I：
10.16865/j.cnki.1000-7555.2024.0030
中图分类号：
学科分类号：
摘要：
A phenyl and vinyl groups- containing polyhedral oligomeric silsesquioxanes (MPOSS) was synthesized by phenyltrimethoxysilane and methylacryloxypropyltrimethoxysilane, 1H-NMR, 13C-NMR, 29Si-NMR and MALDI- TOF- MS were used to characterize the structure of MPOSS. MPOSS is mainly T10 and T12 cage structure with good thermal stability and high carbon residue. MPOSS was applied to modify vinyl ester resin to produce VER/MPOSS composites, TGA, DSC and mechanical tests show that MPOSS can be crosslinked into vinyl ester resin network structure via free radical polymerization, the thermal stability, char residue and glass transition temperature of VER/MPOSS composites increase with the increase of MPOSS ratio. Compared with pure VER, the bending strength, bending modulus and breaking force of composites with 20% MPOSS added are increased by 203%, 365% and 200% respectively, MPOSS improves the mechanical properties significantly. Limiting oxygen index(LOI), CONE calorimetry (CONE) and TG- FTIR tests show that MPOSS promotes the formation of dense char layer and prevents the release of volatile organic products, thus reducing the heat release, smoke release and toxic gas release of VER, and enhancing the flame retardancy. Therefore, MPOSS has a good application prospect in the modification of vinyl ester resin. © 2024 Sichuan University. All rights reserved.
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页码：52 / 64
页数：12
相关论文
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