152 results about "Black lead" patented technology

The wearing piece of non-asbestos high srength material applies the high molecular compound, phenolic ressin as the agglomerant. The metal fiber or organic fiber is strengthen component. The stuffing applies regulator with frictional properties and barium sulfate, black lead, alumina as accessory ingredient. The production possesses excellent characteristic of physical chemical and mechanical and thermo-stability.

A preparation of electric conductive composite by synergism of conductive filler, particularly relates to a preparation of electric conductive composite by synergism between carbon nano-tube and conductive carbon filler. The preparation is characterized by using processing apparatus for high-molecular material to melt mix and granulate after mixing polymer, carbon nano-tube, carbon black, black lead, carbon fiber according to a definite ratio. The preparation is simple to operate, easy for application in industry, can further produce electric conductive composite with great electric conductivity and combination property, which can be widely used in automobile, electric and electronic apparatus, office equipment, industrial mechanism, and can satisfy and expand need of high-molecular materials in various application fields.

The invention discloses a making method for lithium ion battery negative materials, comprising the steps of: (1) mixing the black lead, clad material and solvent, evacuating, stripping solvent and cladding the natural black lead in the clad materials; (2) polymerizing the materials and the surface of the natural black lead will get the microencapsulation cladding layer; (3) charring or charring the products of step (2) to get the carbon negative materials with the artificial black lead layer coated on the surface, this is the lithium ion battery negative materials. The detecting results of the battery negative materials are: tap density is more than 1.02, specific surface area is lese than 2.0, the first discharging capacity is more than 350mAh / g (non-reversible capacity is less than 25mAh / g), the first charging efficiency is more than 93%, after circulating 460 times, the rest first capacity is more than 90%.

The invention relates to a nonclay one-way plugging drilling fluid. The raw material comprises the following components by mass part: 5-40 parts of main anchoring agent, 1-5 parts of auxiliary anchoring agent, 20-150 parts of one-way plugging agent, 5-20 parts of inhibiting agent, 0-20 parts of lubricating agent, 0-500 parts of weighting agent and 1000 parts of water, wherein the main anchoring agent is made of polyacrylamide, polyanionic cellulose or sulfonate copolymer fluid loss additive DSP-2; the auxiliary anchoring agent is made of xanthan gum or sodium carboxymethyl cellulose; the one-way plugging agent is made of polymer elastic microspheres SFH-1 or rubber particles; the inhibiting agent is made of amino polyol, potassium polyacrylate or polyhydric alcohols; the lubricating agent is made of the drilling fluid FYR lubricating agent, white oil or black lead; and the weighting agent is made of one of sodium formate and potassium formate or the mixture of sodium formate and potassium formate. The drilling fluid has the characteristic of one-way plugging, so as to be taken as drilling fluid, completion fluid or workover fluid; and the remarkable effects of improving the drilling rate, stabilizing the well wall and protecting a reservoir are achieved.

The invention discloses a method for preparing graphite-catalyst composite material used to compose diamond, and relative device. The inventive method comprises that first arranges clean graphite particles into a heating room (6) to be preheated while the low limit of heating temperature is higher than the boiling point of plated carbonyl metal complex and the high limit is designed according to plated thickness, then feeds the heated graphite particles into a plating room (7) with a vibrator or mixer (11), feeds carbonyl metal complex steam to plate, at last feeds the graphite particles into a cooling inactivating room (8) to be cooled and inactivated to be fed out or fed into next cycle. The inventive graphite-catalyst composite material has metal layer on the face of each graphite particle, with continuous metal contact between the particles in composite rod, while the invention can realize continuous catalyst metal membrane in composition, and continuously feed carbon source into diamond crystal nucleus to obtain complete crystal nucleus.

The invention discloses a preparation technique of reaction heat pressing original position autogeny copper base material, relates to preparation technique of a copper base material applied to micro electric industry. Focusing on the problem that existing original position autogeny preparation technique is of expensive devices, complex operation while the product is hard to specify. The technique is achieved through following steps: a, put powder of Ti, B, Cu into ball milling cylinder and vacuum the cylinder, aerate with argon gas, blend the mixed powder for 6 to 12 hours for while the ratio of grinding media to material is 1 to 20 : 1 and rotating speed at 200 to 400 round per minutes; b: shape the blended powder in black lead moulds making the density to 20 to 40 percent; c, sinter the powder together with the mould into vacuum heat press furnace and make the density to 90 to 99 percent, furnace cool to room temperature, unmould to acquire the TiB2 / Cu complex material. The device in the invention is of simple and easy operation, the volume fraction is easy to control while the reaction temperature needs not to be very high and without side reaction product.

The pole piece of anode is composed of pyrite, acetylene black, black lead, binding agent and additive. After the pyrite is taken by heat treatment, it mixes with compression-treated acetylene black, black lead and additive. Two methods are used in making the anode powder piece. One is slurry method: after the anode powder mixes with deionized water and industrial spirit, the Teflon liquid cream is added to form a cream; first pressing it to form film and then making it into piece. The second method is rolling forming: after the industrial spirit, Teflon liquid cream are added into the anode powder, first pressing it into film; then making it into pieces; the pieces are put into bake oven to remove water and then put into vacuum case for drying.