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Graphite fiber composite foam carbon and preparation method thereof
The invention discloses graphite fiber composite foam carbon and a preparation method thereof.In the graphite fiber composite foam carbon, mesophase pitch-based graphite fibers are compounded on the ligament part of the graphite fiber composite foam carbon and are arranged in an oriented mode, and the porosity of the foam carbon is larger than 77%; the preparation method comprises the following steps: adding the high-thermal-conductivity mesophase graphite fiber powder into the low-softening-point mesophase pitch, carrying out high-temperature self-foaming to obtain carbon foam, and carrying out oxidation, carbonization and graphitization to obtain the high-thermal-conductivity foam carbon. The foam carbon disclosed by the invention is uniform in pore bubbles and high in porosity, and the graphite fibers are arranged in the ligament part in an oriented manner, so that the foam carbon has relatively high compressive strength and heat conductivity coefficient.
本发明公开了一种石墨纤维复合泡沫炭及其制备方法，所述石墨纤维复合泡沫炭中，中间相沥青基石墨纤维复合在其韧带部分，并取向排列，泡沫碳的孔隙率大于77%；制备方法为：向低软化点中间相沥青中添加高导热中间相石墨纤维粉，高温自发泡得到碳泡沫，经过氧化，碳化，石墨化后得到高导热泡沫炭。本发明所述的泡沫炭，孔泡均匀，孔隙率高，石墨纤维在韧带部分取向排列，具有较高的抗压强度和导热系数。
Graphite fiber composite foam carbon and preparation method thereof
The invention discloses graphite fiber composite foam carbon and a preparation method thereof.In the graphite fiber composite foam carbon, mesophase pitch-based graphite fibers are compounded on the ligament part of the graphite fiber composite foam carbon and are arranged in an oriented mode, and the porosity of the foam carbon is larger than 77%; the preparation method comprises the following steps: adding the high-thermal-conductivity mesophase graphite fiber powder into the low-softening-point mesophase pitch, carrying out high-temperature self-foaming to obtain carbon foam, and carrying out oxidation, carbonization and graphitization to obtain the high-thermal-conductivity foam carbon. The foam carbon disclosed by the invention is uniform in pore bubbles and high in porosity, and the graphite fibers are arranged in the ligament part in an oriented manner, so that the foam carbon has relatively high compressive strength and heat conductivity coefficient.
本发明公开了一种石墨纤维复合泡沫炭及其制备方法，所述石墨纤维复合泡沫炭中，中间相沥青基石墨纤维复合在其韧带部分，并取向排列，泡沫碳的孔隙率大于77%；制备方法为：向低软化点中间相沥青中添加高导热中间相石墨纤维粉，高温自发泡得到碳泡沫，经过氧化，碳化，石墨化后得到高导热泡沫炭。本发明所述的泡沫炭，孔泡均匀，孔隙率高，石墨纤维在韧带部分取向排列，具有较高的抗压强度和导热系数。
Graphite fiber composite foam carbon and preparation method thereof
一种石墨纤维复合泡沫炭及其制备方法
ZHAO HONGMEI (author) / HE SHUYING (author)
2022-12-09
Patent
Electronic Resource
Chinese
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