Flame retardant polymethyl methacrylate toughened by a phosphorus-containing vitrimer

IF 4.5 3区工程技术 Q1 CHEMISTRY, APPLIED

Reactive & Functional Polymers Pub Date : 2024-11-15 DOI:10.1016/j.reactfunctpolym.2024.106104

Di Zhang , Yingke Zhu , Weihong Cao , Jinquan Chen , Zhenghong Guo , Zhengping Fang , Juan Li

引用次数: 0

Abstract

The flammability of poly (methyl methacrylate) (PMMA) poses a fire safety hazard to its applications. A hybrid of piperazine pyrophosphates (PAPP) and aluminum diethylhypophosphate (ADP) were used to modify the flame retardancy of PMMA, and a phosphorus-containing vitrimer (V) was incorporated to toughen the PMMA blends. The PMMA containing 20 wt% PAPP/ADP achieves the UL-94 V0 rating with an increased limiting oxygen index (LOI) value of 24.3 vol%. After incorporating 2.0 wt% V into flame retardant PMMA, both the UL-94 V0 rating and an increase of 56 % for the impact strength of PMMA blends are obtained. The gas-condensed hybrid effects of ADP/PAPP modify the flame retardancy of PMMA and the transesterification between vitrimer and PMMA enhances its mechanical properties. This provides a feasible method to prepare PMMA blends with good comprehensive performances.

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由含磷玻璃聚合物增韧的阻燃聚甲基丙烯酸甲酯

聚甲基丙烯酸甲酯（PMMA）的易燃性为其应用带来了消防安全隐患。哌嗪焦磷酸盐（PAPP）和二乙基磷酸铝（ADP）的混合物被用来改变聚甲基丙烯酸甲酯（PMMA）的阻燃性，而含磷的三聚体（V）被用来增强聚甲基丙烯酸甲酯（PMMA）混合物的韧性。含有 20 wt% PAPP/ADP 的 PMMA 达到了 UL-94 V0 级，极限氧指数（LOI）值增加到 24.3 vol%。在阻燃 PMMA 中加入 2.0 wt% 的 V 后，PMMA 混合物不仅达到了 UL-94 V0 级，而且冲击强度提高了 56%。ADP/PAPP的气凝混合效应改变了PMMA的阻燃性，而三元乙丙橡胶与PMMA之间的酯化反应增强了其机械性能。这为制备具有良好综合性能的 PMMA 共混物提供了一种可行的方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Reactive & Functional Polymers 工程技术-高分子科学

CiteScore

8.90

自引率

5.90%

发文量

259

审稿时长

27 days

期刊介绍： Reactive & Functional Polymers provides a forum to disseminate original ideas, concepts and developments in the science and technology of polymers with functional groups, which impart specific chemical reactivity or physical, chemical, structural, biological, and pharmacological functionality. The scope covers organic polymers, acting for instance as reagents, catalysts, templates, ion-exchangers, selective sorbents, chelating or antimicrobial agents, drug carriers, sensors, membranes, and hydrogels. This also includes reactive cross-linkable prepolymers and high-performance thermosetting polymers, natural or degradable polymers, conducting polymers, and porous polymers. Original research articles must contain thorough molecular and material characterization data on synthesis of the above polymers in combination with their applications. Applications include but are not limited to catalysis, water or effluent treatment, separations and recovery, electronics and information storage, energy conversion, encapsulation, or adhesion.