Carbon fiber power-based carbon/carbon composite preform and shaping method and application thereof
A carbon composite material and carbon fiber powder technology, applied in ceramic molding machines, manufacturing tools, etc., can solve problems such as limited application, and achieve the effects of reducing machining amount, reducing chemical vapor deposition time and deposition cost, and reducing consumption.
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[0032] Example 1:
[0033] A carbon / carbon composite material body based on carbon fiber powder. By weight, carbon fiber powder is 30%~80%, thermosetting resin 15%~30%, curing agent 1.2%~3.0%, graphite powder 0%~50%, Flow aid 0.1﹪~1.0﹪, the sum of each component is 100%, prepared by molding, curing and demolding the above raw materials; the density of the carbon / carbon composite material body is 0.7g / ㎝ 3 ~1.0g / ㎝ 3 , The strength meets the requirements of process flow; the particle size of the carbon fiber powder is 100 mesh to 300 mesh; the graphite powder is flake graphite that has passed an 800 mesh sieve; the thermosetting resin is phenolic resin; the curing agent is hexamethine Tetraamine; The flow aid is fumed silica.
[0034] A carbon / carbon composite material body based on carbon fiber powder, by weight, carbon fiber powder 50%~65%, thermosetting resin 15%~30%, curing agent 1.2%~3.0%, graphite powder 8%~20%, Flow aid 0.1﹪~1.0﹪, the sum of each component is 100%, prepared by...
Example Embodiment
[0048] Example 2:
[0049] In order to increase the fluidity of the raw materials when adding materials, the present invention takes 60% of carbon fiber powder, 23% of thermosetting resin, 1.8% of curing agent, 15% of graphite powder, and 0.2% of flow aid in step (1) by weight. The sum of parts is 100%. After mold loading, curing and demolding, 800mm×800mm×15mm carbon / carbon composite square plate-shaped blanks are prepared. The density of the prepared blanks is 0.72g / ㎝ 3 , The strength meets the requirements of process flow. After chemical vapor deposition, machining, and chemical vapor deposition of the green body, 800mm×800mm×15mm carbon / carbon composite square plate products are prepared, and the product density is 1.26g / ㎝ 3 , The strength is 43MPa.
[0050] The same as in Example 1.
Example Embodiment
[0051] Example 3:
[0052] by figure 2 , image 3 It can be seen that in step ⑴ of the present invention, 60% of carbon fiber powder, 23% of thermosetting resin, 1.8% of curing agent, 15% of graphite powder, 0.2% of flow aid are taken by weight, and the sum of each component is 100%, because The blank is in the shape of an annular plate, and the opening of the female mold 2 in this embodiment is the feed port. Pour the ball-milled raw materials into the female mold 2, tap it to meet the size requirements, cover the male mold 1; after curing and demolding, prepare a circular plate-shaped carbon / carbon composite material blank, the prepared blank The density is 0.71g / ㎝ 3 , The strength meets the requirements of process flow. After the green body is chemical vapor deposition, machining, and chemical vapor deposition again, a circular plate-shaped carbon / carbon composite product is prepared, and the product density is 1.25g / cm 3 , The strength is 44MPa. Compared with the traditiona...
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