An intrinsic flame‐retardant and heat‐resistant vinyl ester resin by crosslinking with diisocyanate, styrene and phosphorus‐containing hydroxyl compound

Author:

Zhang Yuguo1,Wang Jun1,Chen Xi2,Yang Shuang2ORCID,Wang Jingsheng1,Chen Kaiwen1,Gan Xianghui1,Zhu Lu3,Xu Lin4,Huo Siqi56

Affiliation:

1. School of Materials Science and Engineering Wuhan University of Technology Wuhan China

2. School of Mechanical and Electronic Engineering Wuhan University of Technology Wuhan China

3. Wuhan East Lake of HiTech Group Co., Ltd Wuhan China

4. Jiangsu LVDAO Pipes and Valves Co., Ltd Jiangsu China

5. Centre for Future Materials University of Southern Queensland Springfield Australia

6. School of Engineering University of Southern Queensland Springfield Australia

Abstract

AbstractIn this work, 2‐(6‐oxido‐6H‐dibenz<c,e><1,2>oxaphosphorin‐6‐yl)‐methanol (ODOPM) was synthesized, and covalently introduced into vinyl ester resin (VER) by combining with 4,4′‐diphenylmethane diisocyanate (MDI). The influences of ODOPM and MDI on the thermal properties, flame retardancy, and flame‐retardant mode‐of‐action of the resin were investigated. When the phosphorus addition reaches 1.3 wt%, the limiting oxygen index (LOI) of VER/ODOPM‐1.3 boosts to 30.3% and vertical burning (UL‐94) rating increases to V‐0. Compared with the virgin VER, the peak heat release rate (PHRR) and total heat release (THR) of VER/ODOPM‐1.3 are significantly reduced by 64.2% and 35.1%, respectively. The introduction of ODOPM and MDI significantly enhances the flame retardancy of VER. ODOPM and MDI are chemically linked to the polymer network of VER, which increases the glass transition temperature (Tg) and rigidity. This work offers a facile method for improving both thermal and flame‐retardant properties of vinyl ester resin.

Publisher

Wiley

Subject

Materials Chemistry,Polymers and Plastics,Physical and Theoretical Chemistry

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