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Preparation method of high-thermal-conductivity graphite film modified C/C composite material
The invention discloses a preparation method of a high-thermal-conductivity graphite film modified C/C composite material, which comprises the following steps of: spreading and fixing a high-thermal-conductivity graphite film on a plastic film, and taking a short fiber net tire, non-woven cloth and a cut fixed graphite film as raw materials; laying layers according to a sequence of a net tire, a fixed graphite film, a plastic film, 90-degree non-woven cloth, the fixed graphite film, the plastic film, the net tire, the fixed graphite film, the plastic film, the 0-degree non-woven cloth, the net tire, the fixed graphite film, the plastic film and the 90-degree non-woven cloth, and connecting the layers by needling to form a high-thermal-conductivity graphite film modified carbon fiber preform; the plastic film fixing template is removed after high-temperature heat treatment, then ultrasonic cleaning and drying are conducted, the material is put into a deposition furnace to be subjected to pyrolytic carbon deposition densification and carbonization supplementary densification, ultra-high-temperature graphitization treatment is conducted, and the density of the finally prepared material is larger than or equal to 1.76 g/cm < 3 >. The graphite film, the carbon fibers and the matrix carbon microcrystals are arranged in order, and the heat conductivity of the graphite film modified C/C composite material is improved.
本发明公开了一种高导热石墨膜改性C/C复合材料的制备方法，先将高导热石墨膜铺展固定在塑料膜上，以短纤维网胎，无纬布和裁好的固定石墨膜为原料，按照网胎/固定石墨膜‑塑料膜/90°无纬布/固定石墨膜‑塑料膜/网胎/固定石墨膜‑塑料膜/0°无纬布/网胎/固定石墨膜‑塑料膜/90°无纬布的顺序铺层，层与层之间用针刺连接成，编制成高导热石墨膜改性炭纤维预制体；高温热处理后除掉塑料膜固定模板，再超声波清洗、烘干，并放入沉积炉中进行热解炭沉积增密和炭化补充增密，并超高温石墨化处理，最终制备的材料密度≥1.76g/cm3。本发明石墨膜、炭纤维和基体炭微晶排列整齐，提升了石墨膜改性C/C复合材料的热导率。
Preparation method of high-thermal-conductivity graphite film modified C/C composite material
The invention discloses a preparation method of a high-thermal-conductivity graphite film modified C/C composite material, which comprises the following steps of: spreading and fixing a high-thermal-conductivity graphite film on a plastic film, and taking a short fiber net tire, non-woven cloth and a cut fixed graphite film as raw materials; laying layers according to a sequence of a net tire, a fixed graphite film, a plastic film, 90-degree non-woven cloth, the fixed graphite film, the plastic film, the net tire, the fixed graphite film, the plastic film, the 0-degree non-woven cloth, the net tire, the fixed graphite film, the plastic film and the 90-degree non-woven cloth, and connecting the layers by needling to form a high-thermal-conductivity graphite film modified carbon fiber preform; the plastic film fixing template is removed after high-temperature heat treatment, then ultrasonic cleaning and drying are conducted, the material is put into a deposition furnace to be subjected to pyrolytic carbon deposition densification and carbonization supplementary densification, ultra-high-temperature graphitization treatment is conducted, and the density of the finally prepared material is larger than or equal to 1.76 g/cm < 3 >. The graphite film, the carbon fibers and the matrix carbon microcrystals are arranged in order, and the heat conductivity of the graphite film modified C/C composite material is improved.
本发明公开了一种高导热石墨膜改性C/C复合材料的制备方法，先将高导热石墨膜铺展固定在塑料膜上，以短纤维网胎，无纬布和裁好的固定石墨膜为原料，按照网胎/固定石墨膜‑塑料膜/90°无纬布/固定石墨膜‑塑料膜/网胎/固定石墨膜‑塑料膜/0°无纬布/网胎/固定石墨膜‑塑料膜/90°无纬布的顺序铺层，层与层之间用针刺连接成，编制成高导热石墨膜改性炭纤维预制体；高温热处理后除掉塑料膜固定模板，再超声波清洗、烘干，并放入沉积炉中进行热解炭沉积增密和炭化补充增密，并超高温石墨化处理，最终制备的材料密度≥1.76g/cm3。本发明石墨膜、炭纤维和基体炭微晶排列整齐，提升了石墨膜改性C/C复合材料的热导率。
Preparation method of high-thermal-conductivity graphite film modified C/C composite material
一种高导热石墨膜改性C/C复合材料的制备方法
YANG XIN (author) / LIU ZHONGGUO (author) / ZUO YUANMING (author) / HUANG QIZHONG (author)
2023-05-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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