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本文以煤为原料,采用简单的工艺路线在常压下成功制备了炭泡沫材料,考察了机械压力、炭化升温速率、石墨化温度对煤基炭泡沫性能的影响情况。研究表明:1)炭泡沫材料的体积密度和压缩强度随着压力的增加不断提高,其中压缩强度最低为10.21MPa,最高可以达到16.47MPa,并且炭泡沫均表现出脆性断裂的特征;2)炭化升温速率的提高,体积密度逐渐减小,压缩强度也随之降低,同时炭化升温速率的变化并未改变材料脆性断裂的特征;3)石墨化温度的升高,材料的体积密度随之增大,但温度的升高造成高温热应力增大,导致压缩强度降低。
In this paper, coal as raw material, a simple process route under normal pressure was successfully prepared carbon foam material, investigated the mechanical pressure, carbonization temperature rate, graphitization temperature on the coal-based carbon foam properties. The results show that: 1) the bulk density and compressive strength of carbon foam materials increase with the increase of pressure, the lowest compressive strength is 10.21MPa, the highest can reach 16.47MPa, and the carbon foam exhibits the characteristics of brittle fracture; 2) The increase of heating rate, the decrease of bulk density and the decrease of compressive strength, while the change of carbonization temperature does not change the brittle fracture characteristics of the material.3) The graphitization temperature increases and the bulk density of the material increases , But the increase of temperature causes the high temperature thermal stress to increase, resulting in the reduction of compressive strength.