Abstract

The efficiency of application of magnesite as an active filler of an epoxy polymer has been proved, which improves strength and changes physicochemical properties of epoxy composites. The optimal content of magnesite as a structuring additive and as a filler in the epoxy composition (0.1 and 100 wt %) was selected, at which magnesite strengthens the epoxy composite. It has been found that the introduction of magnesite into the epoxy composite leads to an increase in the Vicat heat resistance from 132 to 148–216°С, increases the thermal stability of the epoxy composite, therewith a shift in the initial temperature of destruction to the region of higher temperatures occurs. In addition, thermal destruction of the composite improves the yield of carbonized structures (from 54 to 70–83 wt %), which prevent the release of volatile pyrolysis products into the gas phase thereby result in a decrease in the flammability of the epoxy composite.

中文翻译：

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菱镁矿对改性环氧复合材料理化和力学性能影响的研究

摘要

菱镁矿作为环氧聚合物的活性填料的应用已被证明是有效的，它提高了环氧复合材料的强度并改变了其物理化学性能。选择了菱镁矿作为结构添加剂和环氧树脂组合物中填料的最佳含量（0.1 和 100 重量％），在该含量下菱镁矿增强了环氧复合材料。已经发现，将菱镁矿引入环氧树脂复合材料导致维卡耐热性从 132 增加到 148-216°С，增加了环氧树脂复合材料的热稳定性，从而使初始破坏温度转变为出现温度较高的区域。此外，复合材料的热破坏提高了碳化结构的产率（从 54 到 70-83 wt%），