Method for fabricating high performance carbon/carbon friction resistance material
A technology of friction materials and manufacturing methods, applied in chemical instruments and methods, brake parts, friction linings, etc., can solve problems such as unstable friction performance, large amount of high-temperature wear, and low shear performance, and achieve improved compactness Efficiency, excellent friction performance, and excellent shear resistance
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Embodiment 1
[0026] (1) Adopt the pre-impregnated carbon cloth with a phenolic resin content of 40%, and lay it in layers after cutting, and the layer thickness is 45mm to make a carbon cloth laminate reinforcement;
[0027] (2) The carbon cloth laminate reinforcement is cured by hot pressing at 160 °C. The curing pressure is determined according to the glue content as the curing pressure of 4MPa, the curing pressure temperature is 160 °C, and the curing time is 3h. Fabric reinforcement, which is machined to form a net size blank;
[0028] (3) Put the resin-based carbon cloth reinforcement at 800℃N 2 Carbonization is carried out under the protection, the heating rate is controlled at 30℃ / h, and the formation density is less than 1.2g / cm 3 char / char skeleton;
[0029] (4) The carbon / carbon framework is dense in the confined soaking CVD furnace, the process temperature is 900 °C, the vacuum degree in the furnace is 80KPa, and the propylene gas (C 3 H 6 ) as a dense precursor for depositi...
Embodiment 2
[0033] (1) adopting the pre-impregnated carbon cloth with phenolic resin content of 50%, cutting and laying the layers, the thickness of the layers is 40mm, and the carbon cloth layered reinforcement is made;
[0034] (2) The carbon cloth laminate reinforcement is cured by hot pressing at 150 °C. The curing pressure is determined according to the glue content as the curing pressure of 3MPa, the curing pressure temperature is 150 °C, and the curing time is 4h. After hot pressing and curing, resin-based carbon is formed. Fabric reinforcement, which is machined to form a net size blank;
[0035] (3) Put the resin-based carbon cloth reinforcement at 700℃N 2 Carbonization is carried out under protection, and the heating rate is controlled at 20 °C / h to form a carbon / carbon framework with a density of less than 1.2g / cm3;
[0036] (4) The carbon / carbon skeleton is dense in the confined soaking CVD furnace, the process temperature is 1000 ° C, the vacuum degree in the furnace is 50 K...
Embodiment 3
[0040] (1) Adopt the pre-impregnated carbon cloth with phenolic resin content of 55%, cut it and lay it in layers, and the thickness of the layered layer is 45mm to make a carbon cloth laminated reinforcement;
[0041] (2) The carbon cloth laminate reinforcement is cured by hot pressing at 150 °C. The curing pressure is determined according to the glue content as the curing pressure of 2MPa, the curing pressure temperature is 150 °C, the curing time is 3.5h, and the resin matrix is formed after hot pressing and curing. Carbon cloth reinforcement, which is machined to form a net size blank;
[0042] (3) Put the resin-based carbon cloth reinforcement at 750℃N 2 Carbonization is carried out under the protection, the heating rate is controlled at 25℃ / h, and the density is less than 1.2g / cm 3 char / char skeleton;
[0043] (4) The carbon / carbon skeleton is dense in the confined soaking CVD furnace, the process temperature is 1100 ° C, the vacuum degree in the furnace is 60 KPa, a...
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