中间相沥青基碳碳复合材料热压制备及性能研究中期报告

精品文档---下载后可任意编辑中间相沥青基碳碳复合材料热压制备及性能讨论中期报告中间相沥青基碳碳复合材料热压制备及性能讨论中期报告摘要中间相沥青作为一种优良的碳源，通常用于制备高性能的碳材料。热压制备方法具有简单、快速、容易实现精准加工等优点，因此被广泛应用于复合材料的制备。本文以中间相沥青为碳源，采纳热压法制备中间相沥青基碳碳复合材料，并讨论了不同压制温度及时间对复合材料性能的影响。实验结果表明，随着压制温度的升高，复合材料的密度增加，孔隙率逐渐减小。随着压制时间的延长，材料密度增加较快，但在一定时间后增加趋势减缓。复合材料的拉伸强度、热导率及耐热性能随着压制温度的升高逐渐提高，并在一定时间后趋于平稳。最终得到的复合材料具有较高的密度、热导率及耐热性能，并且具有良好的力学性能，可以广泛应用于航空、航天、汽车等领域。关键词：中间相沥青；碳碳复合材料；热压制备；性能AbstractAs an excellent carbon source, mesophase pitch is commonly used to prepare high-performance carbon materials. The hot-pressing method has the advantages of simplicity, rapidity, and easy realization of precision processing, and is therefore widely used in the preparation of composite materials. In this paper, mesophase pitch was used as the carbon source, and the hot-pressing method was adopted to prepare mesophase pitch-based carbon-carbon composites. The effect of different pressing temperatures and times on the properties of the composite material was studied.The experimental results show that with the increase of pressing temperature, the density of the composite material increases and the porosity gradually decreases. With the prolongation of pressing time, the material density increases rapidly, but the increasing trend slows down after a certain time. The tensile strength, thermal conductivity and heat resistance of the composite material gradually increase with the increase of pressing temperature, and tend to be stable 精品文档---下载后可任意编辑after a certain time. The final composite material has high density, thermal conductivity and heat resistance, and good mechanical properties, and can be widely used in aviation, aerospace, automobile and other fields.Keywords: mesophase pitch; carbon-carbon composites; hot-pressing preparation; properties.