A kind of forming method of carbon fiber reinforced SIC-based composite material automobile brake pad
A composite material and molding method technology, applied in the direction of friction lining, mechanical equipment, etc., can solve the problems of low efficiency and long process cycle, and achieve the effect of reducing cost, large heat capacity and ensuring stability
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Embodiment 1
[0017] (1) Prepare the carbon fiber prefabricated body in the pre-designed and prepared mold. The prefabricated body adopts the process of continuous stacking of plain carbon cloth prepared by PAN-based 12k continuous carbon fiber and chopped carbon fiber. The laying ratio is 1:6, that is, laying a Layers of carbon cloth, and then continuously lay 6 layers of chopped fibers, the length of the chopped fibers is 2mm. Every time a layer of carbon cloth is laid, SiC powder is evenly spread on the carbon cloth, and the particle size is controlled at 40 μm; after completion, the preform is cut into a ring with a diameter of 400 mm and a thickness of 20 mm. The volume density of the prepared preform is 0.58 g / cm 3 .
[0018] (2) Use phenolic resin as impregnating agent. Soak the ring preform in the phenolic solution for 4 hours. After taking it out, put the prefabricated body into a metal mold, raise the temperature to 90°C and keep it for 1h, then raise the temperature to 150°C a...
Embodiment 2
[0022] (1) Prepare the carbon fiber prefabricated body in the pre-designed and prepared mold. The prefabricated body adopts the process of continuous stacking of unidirectional cloth prepared by PAN-based 6k continuous carbon fiber and chopped carbon fiber. The laying ratio is 1:8, that is, laying a layer of carbon cloth, and then continuously lay 8 layers of chopped fiber, the length of the chopped fiber is 5mm. Every time a layer of carbon cloth is laid, SiC powder is evenly spread on the carbon cloth, and its particle size is controlled at 80 μm; after completion, the prefabricated body is cut into a 300×300mm plate with a thickness of 30mm, and the volume density of the prepared prefabricated body is 0.46 g / cm 3 .
[0023] (2) Use phenolic resin as impregnating agent. Soak the ring preform in the phenolic solution for 4 hours. After taking it out, put the prefabricated body into a metal mold, then place the whole in an oven, raise the temperature to 90°C, keep it for 2 ...
Embodiment 3
[0027] (1) Prepare the carbon fiber prefabricated body in the pre-designed and prepared mold. The prefabricated body adopts the process of continuous stacking of unidirectional fabric prepared by PAN-based 12k continuous carbon fiber and chopped carbon fiber. The laying ratio is 1:6, that is, laying a Layer carbon cloth, and then continuously lay 6 layers of chopped fiber, the length of chopped fiber is 3-4mm. Every time a layer of carbon cloth is laid, SiC powder is evenly spread on the carbon cloth, and the particle size is controlled at 100 μm; after completion, the prefabricated body is cut into a 400×400mm plate with a thickness of 20mm, and the volume density of the prepared prefabricated body is 0.61 g / cm 3 .
[0028] (2) Use furfuryl ketone resin as impregnating agent. Soak the ring preform in the furfurone solution for 2 hours. After taking it out, put the prefabricated body into a metal mold, then place the whole in an oven, raise the temperature to 90°C, keep it ...
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