Abstract

The results of investigations of the mechanical and thermal properties of the composites modified with a structure-forming agent based on aluminum hydroxide and a high- and low-density polyethylene blend are reported. The properties of the polymer composites, including the fracture stress, relative elongation, melt flow index, heat resistance, thermal stability, and thermomechanics, have been studied. All the composite materials have been based on a titanium dioxide-modified (1 wt %) high- and low-density polyethylene blend (50/50). The aluminum hydroxide content has been varied within 1‒30 wt %. Using the data obtained on the Kanavets device, the temperature dependences of the deformation have been built and the regularities of changes in the thermomechanical curves have been established. It has been shown that, in all the investigated samples, a transition from the solid to viscous-flow state occurs with increasing temperature. The thermal stability has been estimated by the thermogravimetric analysis.

中文翻译：

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基于氢氧化铝和聚乙烯混合物的二氧化钛改性复合材料的机械和热性能

摘要

报道了用基于氢氧化铝和高低密度聚乙烯共混物的结构形成剂改性的复合材料的机械和热性能的研究结果。研究了聚合物复合材料的性能，包括断裂应力、相对伸长率、熔体流动指数、耐热性、热稳定性和热机械性能。所有复合材料均基于二氧化钛改性（1 wt%）高密度和低密度聚乙烯混合物（50/50）。氢氧化铝含量在 1-30 wt% 范围内变化。利用卡纳韦茨装置获得的数据，建立了变形的温度依赖性，并建立了热机械曲线的变化规律。研究表明，在所有研究的样品中，随着温度的升高，会发生从固态到粘流态的转变。通过热重分析评估了热稳定性。