Short carbon fiber modified high friction composite and preparing method and application thereof
A short carbon fiber and composite material technology, applied in friction linings, mechanical equipment, etc., can solve problems such as poor toughness, low room temperature and high temperature strength, toughening and forming difficulties, etc., to achieve high conductivity, low friction coefficient, The effect of stabilizing the coefficient of friction
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[0094] Example 1
[0095] The short carbon fiber modified high friction composite material prepared in Example 1 includes the following components in terms of mass percentage:
[0096] Short carbon fiber 2.0%, iron 10%, chromium 5%, silicon carbide 3%, zirconia 3%, granular graphite 2%, flake graphite 10%, iron chromium alloy 8%, nano alumina dispersion strengthened copper powder 30% , Electrolytic copper powder 27%. The particle size of iron, chromium, silicon carbide, zirconia, and iron-chromium alloy is 100 microns, the particle size of granular graphite and flake graphite is 120 microns, the particle size of nano alumina dispersed copper powder is 120 microns, electrolytic copper powder The particle size is 200 microns. The short carbon fiber has a diameter of 8 μm and a length of 2 mm. The difference from Comparative Example 2 and Comparative Example 3 is that the copper powder part uses nano-alumina dispersion-strengthened copper powder, and the short carbon fiber is resin...
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[0101] Example 2
[0102] The short carbon fiber modified high friction composite material prepared in Example 2 includes the following components in terms of mass percentage:
[0103] Short carbon fiber 2.0%, iron 10%, chromium 3%, silicon carbide 2%, granular graphite 2%, flake graphite 10%, iron-chromium alloy 9%, and nano-yttrium oxide dispersed copper powder 62%. The particle size of iron, chromium, silicon carbide, and iron-chromium alloy is 100 microns, the particle size of granular graphite and flake graphite is 120 microns, and the particle size of nano-yttrium oxide dispersed copper powder is 100 microns. The short carbon fiber has a diameter of 8 μm and a length of 2 mm.
[0104] First, resin-coated-carbonized short carbon fibers are prepared. Dissolve the prepared phenolic resin in an organic solvent to obtain a saturated solution of phenolic resin alcohol; then impregnate the short carbon fibers with a saturated solution of phenolic resin alcohol at 80°C for 2h; then d...
Example Embodiment
[0108] Example 3
[0109] The short carbon fiber modified high friction composite material prepared in Example 3 includes the following components in terms of mass percentage:
[0110] Short carbon fiber 1.5%, iron 10%, chromium 4%, silicon carbide 2%, zirconia 3.5%, granular graphite 2%, flake graphite 12%, iron-chromium alloy 6%, nano-alumina dispersed copper powder 25%, Electrolytic copper powder 34%. The particle size of iron, chromium, silicon carbide, zirconia, and iron-chromium alloy is 90 microns, the particle size of granular graphite and flake graphite is 120 microns, the particle size of nano-yttrium oxide dispersed copper powder is 100 microns, electrolytic copper powder The particle size is 150 microns. The short carbon fiber has a diameter of 8 μm and a length of 2 mm.
[0111] First, resin-coated-carbonized short carbon fibers are prepared. Dissolve the prepared phenolic resin in an organic solvent to obtain a saturated solution of phenolic resin alcohol; then impr...
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