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95results about How to "Surface performance is stable" patented technology

Production method of interphase carbon-coated graphite negative electrode material

The invention provides a production method of an interphase carbon-coated graphite negative electrode material. The production method is characterized in that natural graphite or artificial graphite with median particle diameter being 10 to 30 micrometers is adopted as a raw material A, interphase carbon microspheres are adopted as a raw material B, and nano-grade micro powder asphalt is adopted as a raw material C. The raw material A is carbonized at the temperature of 1200 to 1500 DEG C or is graphitized at the temperature of 2800 to 3200 DEG C. The raw material B is crushed into nano powder with median particle diameter being less than or equal to 80nm by utilizing a nano crushing method. The raw material A and the raw material B are mixed in a ratio of 100/(3-10) to be primarily coated and modified, the raw material C is added into the mixture of the raw material A and the raw material B according to a ratio of (A+B)/C being equal to 100/(5-10) to be secondarily coated and modified, and finally the mixture is secondarily and thermally treated at the temperature of 1200 to 1500 DEG C or 2800 to 3200 DEG C. The production method has the advantages that the conductivity is good, the capacity is high, the cycling performance is good, the service life is long, and compatibility with electrolyte is good.
Owner:大连宏光锂业有限责任公司

Method for surface nano-crystallization and structure stabilization of metal material

The invention discloses a method for surface nano-crystallization and structure stabilization of a metal material and belongs to the technical field of surface treatment of materials. The method disclosed by the invention comprises the following steps: by taking the metal material as an object, firstly performing stress relief annealing pretreatment to remove internal stress left by a previous machining process; then putting into a surface mechanical grinding device under vacuum conditions, and repeatedly hitting the surface of the material at high frequency by utilizing a large number of steel balls to perform surface nano-crystallization treatment; further performing pressure relief annealing treatment to remove the internal stress produced in the mechanical grinding treatment; and finally performing high-energy ion injection on the material after surface nano-crystallization to obtain the metal material with a stable surface nano-layer. According to the method disclosed by the invention, the surface mechanical grinding is combined with the high-energy ion injection, so that the nano-layer can be prepared on the surface of the metal material, the nano-layer has good stability in the subsequent cold and hot processing, and thus the stability of the mechanical properties of the surface of the material can be kept; in addition, the method disclosed by the invention is simple in process, low in investment, high in efficiency, low in energy consumption, pollution-free and easy to realize industrial production.
Owner:KUNMING UNIV OF SCI & TECH

Method for manufacturing plastic carrier belt

The invention relates to a method for manufacturing a plastic carrier belt. The method comprises the following steps of (1) sheet manufacturing, wherein the sheet manufacturing step comprises forming of two kinds of particles through prilling, drying and extruding, and one kind of plastic particles forms a middle layer of the sheet, and the other kind of plastic particles forms an upper surface layer and a lower surface layer of the sheet; (2) sheet slitting, wherein the sheet obtained through co-extrusion of three layers is slit by a tool on an extruding machine to form strip-shaped sheets; (3) pocket forming, wherein the slit sheets are arranged on a punch press, the sheets are punched through a forming device, a row of positioning round holes is formed at one side in the length direction of the sheets, a row of pocket type loading holes is formed at the other side in the length direction of the sheets, the sheets are stretched and formed, and the carrier belt is obtained. The method has the pertinence according to different characteristics of raw materials on the layers, the materials are different in layers, the optimum performance of the materials on each layer can make good for deficiency, the performance is stable, the optimum performance of the materials can be fully developed, and therefore on the premise of ensuring the needed performance of the carrier belt, the production cost is reduced.
Owner:ZHEJIANG JIEMEI ELECTRONICS & TECH

Method for preparing zinc alloy super-hydrophobic and self-cleaning surface by using ultra-short pulse laser

The present invention relates to a method for preparing a zinc alloy super-hydrophobic and self-cleaning surface by using ultra-short pulse laser, and belongs to the technical field of metal substrate surface modification. According to the method, a zinc alloy sample is subjected to polishing pretreatment, the sample surface is washed respectively with deionized water and dehydrated alcohol, blow drying or air drying is performed, a laser processing technology is utilized, ultra-short pulse laser is used to adjust the relevant process parameters, the sample is subjected to a surface treatment, countless micro structures are processed on the sample surface, and after completing the processing, the processed sample is placed into an electric heating drying box to bake so as to obtain the zinc alloy super-hydrophobic surface having the micron-scale granular or papillary structure, wherein the surface has characteristics of self-cleaning function, excellent friction resistance, and excellent corrosion resistance. The preparation method of the present invention has characteristics of simple process, convenient operation, high efficiency, low energy consumption, low cost, green environmental protection, and easy industrial application achieving.
Owner:金顿激光科技(佛山)有限公司

Preparation method of bionic rice leaf surface lattice anisotropy super-hydrophobic surface material

The invention relates to a preparation method of a bionic rice leaf surface lattice anisotropy super-hydrophobic surface material. The method sequentially comprises steps of (1) slicing a polytetrafluoroethylene high polymer material, sequentially putting the sliced polytetrafluoroethylene high polymer material into methylbenzene, absolute ethyl alcohol and the deionized water, respectively carrying out ultrasonic cleaning for 5-15 minutes, and drying at 40-90 DEG C; (2) drawing a bionic rice leaf surface lattice anisotropic structure graph by using Marking Mate software; (3) setting process parameters of laser equipment, setting the light spot diameter to be 0.1-0.5 mm, setting the engraving speed to be 10-100mm/s, setting the engraving mode to be horizontal and bidirectional, setting thepower to be 1%-10% and setting the engraving frequency to be 1-10 times, placing a treated base material on a laser equipment sample table, and completing laser engraving of the bionic rice leaf lattice anisotropic structure graph so as to obtain the bionic rice leaf lattice anisotropic structure graph. The method is advantaged in that the method is simple, the structure preparation method is rapid, environmental pollution is avoided, the prepared anisotropic super-hydrophobic surface is of a hierarchical structure similar to rice leaf surfaces, the anisotropic wettability is shown, and the method is suitable for industrial batch production.
Owner:HUBEI POLYTECHNIC UNIV

Multi-layer coated co-extrusion profile and production method thereof

The invention provides a multi-layer coated co-extrusion profile and a production method thereof. The co-extrusion profile comprises a rigid core and a coating layer coating the periphery of the rigid core in a co-extrusion mode, wherein the coating layer comprises an inner coating layer and an outer coating layer, the inner coating layer is prepared from a polyolefin wood-plastic material which takes polyolefin, unsaturated carboxylic acid modified polyolefin and plant fiber powder as main components, the outer coating layer is made of one of a thermoplastic elastomer, a thermoplastic engineering plastic, an ionic polymerization resin and an ionic polymerization resin reinforced polyolefin plastic, a first adhesive layer is also arranged between the rigid core and the inner coating layer, and an adhesive selected by the first adhesive layer is unsaturated carboxylic acid modified polyolefin hot melt glue or polyurethane hot melt glue. According to the invention, through the arrangement of the multi-layer structure, the profile has the physical strength of the core material, the wood-like effect and corrosion resistance of the wood-plastic layer and the wear resistance of the co-extrusion surface layer at the same time.
Owner:ANHUI SENTAI WPC GRP CO LTD

Method for preparing silicone rubber super-hydrophobic self-cleaning surface with pulse laser

The invention relates to a method for preparing a silicone rubber super-hydrophobic self-cleaning surface with a pulse laser. The pulse layer is used to perform laser scanning on the surface of a silicone rubber sample, a micro nano structure is formed on the surface of the silicone rubber sample, and the super-hydrophobic self-cleaning surface is prepared. The laser preparation method adopted in the invention has the advantages of simple process and mature technology, and only changes the structure of the surface layer of the silicone rubber without changing its body composition, structure and characteristics. Compared with a method adopting the use of chemical reagents on the surface modification of silicone rubber, the method provided by the invention is higher in laser processing efficiency, lower in energy consumption, lower in cost and greener. With the method of the present invention, it is possible to obtain a super-hydrophobic silicone rubber surface within a wide range of process conditions and has a very important effect on practical applications. The method is simple in process, safe and reliable, and suitable for processing silicone rubber products of various shapes and specifications and products covered by silicone rubber. The prepared super-hydrophobic silicone rubber is stable in surface performance and particularly suitable for large-scale industrial production.
Owner:HUBEI UNIV OF TECH

Method for preparing aluminum alloy super-hydrophobic and self-cleaning surface by using ultra-short pulse laser

The present invention relates to a method for preparing an aluminum alloy super-hydrophobic and self-cleaning surface by using ultra-short pulse laser, and belongs to the technical field of metal substrate surface modification. According to the method, an aluminum alloy sample is subjected to polishing pretreatment, the sample surface is cleaned respectively with deionized water and dehydrated alcohol, then blow drying with cold wind or air drying is performed, a laser processing technology is utilized, short pulse laser is used to adjust the relevant process parameters, the sample is subjected to a surface treatment, countless micro structures are processed on the sample surface, and after completing the processing, the processed sample is placed into an electric heating drying box to bake so as to obtain the aluminum alloy super-hydrophobic and self-cleaning surface having the micron-scale papillary structure, wherein the surface has characteristics of good super-hydrophobicity and excellent self-cleaning function. The preparation method of the present invention has characteristics of simple process, convenient operation, high efficiency, low energy consumption, low cost, green environmental protection, and easy industrial application achieving.
Owner:金顿激光科技(佛山)有限公司

Nickel-based titanium nitride metal ceramic coating material and preparation method and application thereof

The invention discloses a nickel-based titanium nitride metal ceramic coating material and preparation method and application thereof. The preparation method comprises the following steps that S1, mixing and ball milling, carrying out ball milling on a mixed raw material and a ball milling solvent; the mixed raw materials are calculated according to the mass ratio of 60%-85% of a titanium nitride,10-30% of nickel and 0.5-10% of carbon; S2, mixed forming agent, after the ball milling is finished, adding the mixed forming agent into the ball mill to carry out rolling ball milling, and a mixed material liquid is obtained; S3, spray granulation, carrying out spray granulation on the mixed material liquid in the step S2, so as to obtain mixed materials; S4, carbonizing to prepare the powder, drying the mixed material granules in the step S3, then carrying out carbonization and solid solution reaction in a high-temperature carbonization furnace to obtain (Ti, Ni) (C,N) solid solution powder; S5, screening particles, the (Ti, Ni) (C,N) solid solution powder is sieved by a mesh sieve, so as to obtain the nickel-based titanium nitride metal ceramic coating material with the average grain diameter of 60-100 microns. The nickel-based titanium nitride metal ceramic coating material prepared by the preparation method has high wear resistance and strong corrosion resistance.
Owner:GUANGDONG POWER GRID CO LTD +1

Stainless steel surface treatment method capable of improving anti-corrosion capacity

The invention discloses a stainless steel surface treatment method capable of improving the anti-corrosion capacity. The stainless steel surface treatment method comprises the following steps that a steel sample with the size being 15*15*10 mm is cut to serve as a base material, and AlN is selected to serve as a source electrode material; the steel sample is subjected to abrasive paper grinding and mechanical polishing many times and then sequentially cleaned and dried; and aluminum diffusion treatment is conducted through a double-layer glow plasma surface alloying vacuum furnace, a stainlesssteel cylinder serves as an auxiliary cathode, the base material and the AlN are placed in the auxiliary cathode, surface treatment begins to be conducted, and the sample is cooled to be the indoor temperature with a furnace after treatment. According to the stainless steel surface treatment method capable of improving the anti-corrosion capacity, operation is easy, the implementation process isenvironmentally friendly and free of pollution, and the combining force between a diffusion layer and a base body is increased; AlN is selected to serve as the source electrode material and can generate N2 in a reaction, other oxidation reactions are avoided, and the cleanliness of the surface layer of steel is improved; and an anti-corrosion aluminium oxide surface layer can be formed on the surface of the stainless steel with the passage of time, after an oxidation film is formed on the surface, further infiltration of oxygen atoms can be effectively prevented, and the overall surface performance is stable.
Owner:江苏徐钢钢铁集团有限公司
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