54results about How to "Improve frictional stability" patented technology

The invention discloses a C / C-SiC composite material, and a preparation method and an application thereof. The C / C-SiC composite material comprises a carbon fiber prefabricated part, a carbon matrix and a silicon carbide matrix, aperatures of the carbon fiber prefabricated part are filled with the carbon matrix and the silicon carbide matrix, the silicon carbide matrix comprises a first silicon carbide matrix and a second silicon carbide matrix, and the second silicon carbide matrix is introduced through a vapor silicon infiltration sintering technology. The preparation method comprises the following steps: 1, introducing the carbon matrix; and 2, respectively introducing the first silicon carbide matrix and the second silicon carbide matrix. The C / C-SiC composite material has the advantages of uniform components, high density, fine matrix particles, high friction stability, high heat conductivity and excellent mechanical performances. The preparation method is simple, and the composite material has excellent performances.

The invention discloses a multielement resin base carbon compound disc-type braking pad and a preparation method thereof. The braking pad is obtained by carrying out mould pressing and forming once on the following raw materials: unmodified phenolic resin, organosilicone modified phenolic resin, polyacrylate modified phenolic resin, polyacrylonitrile carbon fiber, artificial granular graphite, natural crystalline flake graphite, granular coke, silicon carbide, aramid pulp, compound mineral fiber, steel fiber, red copper powder, ferrous sulfide and barium sulfate. The product disclosed by the invention has the advantages of high temperature resistance, ablation resistance, small heat expansion coefficient, high specific strength, high specific modulus, good abrasion resistance, low noise, excellent initial performance, short breaking-in period, small heat fade, long service life, excellent pedal comfort degree, excellent high temperature and high speed performance and stable abrasion grade under different braking conditions, the effect on considering the good abrasion resistance and low noise is achieved, no dust is generated during braking, and various materials are all environment-friendly environment-protection materials. The multielement resin base carbon compound disc-type braking pad also has the function of automatically cleaning the braking disc.

The invention discloses a lubricant composition containing a corrosion resistant ionic liquid. The composition comprises, by mass, 99.9%-98% of base oil and 0.1%-2% of the corrosion resistant ionic liquid, wherein the base oil is selected from multiply-alkylated cyclopentane with 2 to 5 alkyl chains, the corrosion resistant ionic liquid is obtained by compounding one of benzotriazole diglycol mono methyl ether, benzotriazole triglycol mono methyl ether and benzotriazole tetraglycol mono methyl ether with one of lithium tetrafluoroborate, lithium hexafluorophosphate, lithium trifluoromethanesulfonate and lithium bis(trifluoromethanesulphonyl)imide. The ionic liquid and the lubricant composition can be synchronously synthesized, the process is simple, and the lubricant composition has good corrosion resistance and excellent tribological properties.

The invention discloses a s-triazine ionic liquid used as a lubricant and a preparation method thereof. This ionic liquid is composed of diethylene glycol monomethyl ether, triethylene glycol monomethyl ether or tetraethylene glycol monomethyl ether derivatives of s-triazine and lithium tetrafluoroborate, lithium hexafluorophosphate, lithium trifluoromethanesulfonate or bis(trifluoro Methylsulfonyl)imide obtained after mixing with lithium. The ionic liquid has good chemical stability, thermal stability and anti-friction and anti-wear properties. The ionic liquid provided by the invention has simple preparation process, low cost and excellent performance, and is suitable for industrial application.

The invention relates to a preparation method of an aluminum matrix composite material brake disc, and belongs to the field of metal matrix composite materials. BN powder, MoS2 powder and titanium-plated diamond micro-powder are selected to serve as a reinforcement body, and pure aluminum serves as a matrix; through ball milling, the BN powder and Al powder are firstly mixed, and therefore the BNpowder is evenly distributed in the Al powder to form composite powder; then the composite powder, the MoS2 powder and the titanium-plated diamond micro-powder are mixed evenly according to a certainproportion, then pressing and pre-forming are carried out, in the pressing process, through a powder filling control manner, (BN+Al) composite powder is distributed to the 1 / 4 width position of the inner side of a pre-forming blank of an annular brake disc, and (BN+Al+MoS2+titanium-plated diamond) quaternary mixing powder is distributed to the outer side; and finally, the pressed and pre-formed blank is placed into a vacuum hot-pressing furnace for hot pressed sintering, and the composite aluminum matrix composite material brake disc is finally obtained. By means of the above method, the prepared motorbike brake disc is small in mass and better in radiating performance and wear-resisting property, and the working stability and reliability of the brake disc can be comprehensively improved.