Efficient Approach to the Preparation of Flame-Retardant Nanocomposite Polymeric Materials Based on High Density Polyethylene and Magnesium Hydroxide

IF 1.1 4区化学 Q4 CHEMISTRY, PHYSICAL Doklady Physical Chemistry Pub Date : 2023-08-11 DOI:10.1134/S0012501623600055

O. V. Arzhakova, A. A. Dolgova, A. Yu. Kopnov, A. Yu. Yarysheva, A. L. Volynskii

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引用次数: 1

Abstract

A novel approach to the development of nanocomposite materials based on high-density polyethylene and an inorganic flame retardant, magnesium hydroxide, via the fundamental strategy of environmental crazing of polymers has been advanced. Efficient methods for incorporation of magnesium nitrate as a precursor into mesoporous polymeric matrices have been proposed, and optimal conditions providing high-conversion in situ hydrolysis of magnesium salt to magnesium hydroxide within the confined space of mesopores of polymeric matrixes have been found. As a result of in situ hydrolysis, spherical or needle-shaped magnesium hydroxide nanoparticles are found to be uniformly distributed within the volume of the high-density polyethylene matrix. The obtained nanocomposite polymeric materials with a low content of magnesium hydroxide nanoparticles (up to 30 wt %) are characterized by reduced flammability and mechanical characteristics comparable to those of the initial polymer.

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高密度聚乙烯-氢氧化镁纳米复合阻燃高分子材料的高效制备方法

本文提出了一种基于聚合物环境腐蚀的基本策略，以高密度聚乙烯和无机阻燃剂氢氧化镁为基础，开发纳米复合材料的新方法。提出了将硝酸镁作为前驱体加入介孔聚合物基质的有效方法，并找到了在聚合物基质的有限介孔空间内将镁盐原位水解为氢氧化镁的最佳条件。由于原位水解的结果，球形或针状的氢氧化镁纳米颗粒被发现均匀分布在高密度聚乙烯基体的体积内。获得的纳米复合聚合物材料具有低含量的氢氧化镁纳米颗粒(高达30 wt %)，其特点是可燃性降低，机械特性与初始聚合物相当。

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来源期刊

Doklady Physical Chemistry 化学-物理化学

CiteScore

1.50

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Doklady Physical Chemistry is a monthly journal containing English translations of current Russian research in physical chemistry from the Physical Chemistry sections of the Doklady Akademii Nauk (Proceedings of the Russian Academy of Sciences). The journal publishes the most significant new research in physical chemistry being done in Russia, thus ensuring its scientific priority. Doklady Physical Chemistry presents short preliminary accounts of the application of the state-of-the-art physical chemistry ideas and methods to the study of organic and inorganic compounds and macromolecules; polymeric, inorganic and composite materials as well as corresponding processes. The journal is intended for scientists in all fields of chemistry and in interdisciplinary sciences.