257results about How to "Meet appearance requirements" patented technology

The invention relates to a low-viscosity and high-heat conduction epoxy resin electronic potting adhesive which is formed by mixing a component A with an amine curing agent according to the weight ratio of 100:5-12, wherein the component A comprises the following raw materials in weight ratio: 70-85 parts of spherical alumina powder, 10-20 parts of epoxy resin, 2-4 parts of active thinner, 2.5-5 parts of toughening agent and 0.1-0.5 parts of coupling agent. The invention has the advantages that the spherical alumina of the potting adhesive has higher filling amount compared with non-spherical alumina, the viscosity is less affected, the fluidity is favorable and the construction is convenient; the potting adhesive has good dispersibility and is difficult to sedimentate; a condensate has high heat conductivity and can quickly dissipate accumulated heat of heating parts and components; a high-filling filler can reduce a thermal expansion coefficient and a volumetric shrinkage rate and is very suitable for potting parts and components; and the price is cheaper compared with boron nitride and aluminum nitride, and the cost is low.

The invention relates to flame retardant high-heat-conductivity epoxy resin electronic adhesive glue, which is formed by mixing ingredients A with amine curing agents according to the weight ratio of 100:(5-12), wherein the ingredients A comprises the following ingredients in parts by weight: 50 to 60 parts of spherical alumina powder, 20 to 30 parts of flame retardant fillings, 10 to 20 parts of epoxy resin, 1.5 to 2.5 parts of reactive diluents, 2 to 3 parts of halogen-free liquid flame retardants, 2 to 3 parts of toughening agents, 0.2 to 0.8 parts of thixotropic agents and 0.1 to 0.5 parts of coupling agents. According to the adhesive glue provided by the invention, the adhesive glue filled by the spherical alumina has higher condensate heat conductivity when being compared with the adhesive glue filled by the non-spherical alumina, and the heat accumulation of heating devices can be fast dispersed.

The invention discloses a mobile product middle frame. The mobile product middle frame comprises a side frame and a middle plate fixedly arranged in the side frame. A plastic frame is arranged on the middle plate. The plastic frame is formed at the joint of the middle plate and the side frame through injection molding. An earphone hole, a button hole and a USB hole are arranged in the side frame. The invention also provides a processing method for the mobile product middle frame. The method is used for forming the above mobile product middle frame. The side frame is formed from aluminum alloy sections through bending, the middle plate is formed from an aluminum sheet material through impact molding, then the plastic frame is formed from plastics through injection molding, machine processing working procedures are reduced effectively, the processing cost is lowered, the middle frame finished product has characteristics of simple structure and high intensity. Through a plurality of surface treatments, the middle frame is beautiful and fashionable, and appearance requirements of consumers can be met well.

The invention provides a surface treatment method of an aluminum alloy shell, the surface treatment method comprises the following steps that S1, wire drawing is carried out on the side face of the aluminum alloy shell, and a wire-drawn surface is obtained; S2, sand blasting is carried out on the non-wire-drawn surface of the aluminum alloy shell; S3, anodic oxidation treatment is carried out on the whole aluminum alloy shell obtained after wire drawing and sand blasting, and an oxidation film layer is formed; and S4, hole sealing treatment is carried out on the aluminum alloy shell obtained after anodic oxidation treatment, and the aluminum alloy shell obtained after side face wire drawing and non-wire-drawn surface sand blasting is obtained. According to the surface treatment method of the aluminum alloy shell, the appearance of the aluminum alloy shell is rich and diverse.

The invention provides a terminal with a variable color. The terminal comprises a touch screen,a display screen, a circuit board and a liquid crystal light-dimming film, wherein the touch screen is placed over the display screen; the circuit board is arranged under the display screen and formed by a driving circuit; the liquid crystal light-dimming film is mounted on the touch screen; the driving circuit applies control voltage to the crystal light-dimming film; when an amplitude of the control voltage is no less than a preset threshold value, the crystal light-dimming film is transparent; when the mplitude of the control voltage is no more than the preset threshold value, the crystal light-dimming film is non-transparent; and the color of the crystal light-dimming film at the transparent state is different from the color of the display screen.When the display screen is at the idle state, the display screen displays a different contour from a color of a present display screen in the prior art, so requirements for terminal contour by users are met and user visual experience effect is enhanced.

The invention relates to the technical field of amorphous alloy and in particular relates to a surface treatment method of amorphous alloy. The method comprises the following steps: 1, performing cold spraying, namely spraying an aluminum layer or an aluminum alloy layer to the surface of the amorphous alloy by adopting a cold spraying process to obtain a semi-finished product; 2, performing anodizing treatment, namely performing anodizing treatment on the aluminum layer or the aluminum alloy layer in the semi-finished product obtained in the step 1 to enable an aluminum oxide film to be formed on the surface the aluminum layer or the aluminum alloy layer to obtain a finished product. According to the method, the treated amorphous alloy product can be perfectly matched with an aluminum alloy product in appearance, and the appearance requirements of industrial design are met; moreover, compared with a PVD (physical vapor deposition) technology, the method has the characteristics that the appearance requirements can be well met on the basis of the advantage of low cost, and the application range of the amorphous alloy is greatly expanded.

The invention discloses a polypropylene composite for a fender as well as a preparation method of the polypropylene composite. The polypropylene composite is prepared from 42-92wt% of polypropylene, 2-5wt% of an oligomer with few flow marks, 1-5wt% of a polar monomer graft olefin polymer, 0-2wt% of a special nucleating agent for polypropylene, 0-4wt% of a processing aid, 0-2wt% of a light stabilizer and 5-40wt% of talcum powder. The preparation method comprises the following steps: melting, mixing and dispersing the polypropylene, the oligomer with few flow marks, the polar monomer graft olefin polymer, the special nucleating agent for polypropylene, the processing aid and the light stabilizer in a double-screw extruder; feeding the talcum powder into the double-screw extruder from one side by an agravic metering balance; and extruding and granulating, thereby finally obtaining the product, namely the polypropylene composite. The polypropylene composite has the characteristics of high rigidity, high gloss and no flow marks and meets the requirements of large-sized polypropylene parts on appearance, and polypropylene injection molded parts have no flow marks.

The invention discloses a solar cell for an all-black crystalline silicon photovoltaic module and a preparation method of the solar cell. A front composite film is prepared by adopting tubular PECVD equipment and comprises a SiNx: Hy layer, a SiOxNy layer and a SiOx layer. The SiNx:Hy layer is connected with the n-type doped layer, and the SiOx layer is connected with a front silver electrode. TheSiNx: Hy layer is composed of 3 to 4 SiNx: Hy layers with different refractive indexes and thicknesses. The SiOxNy layer is composed of 2 to 3 SiOxNy layers with different refractive indexes and thicknesses. The SiOx layer is composed of 1 to 2 SiOx layers with different refractive indexes and thicknesses. By the adoption of the method, the requirement of the all-black crystalline silicon photovoltaic module can be completely met; the appearance color difference of the black module is remarkably eliminated; and the method can be applied to a traditional white backboard photovoltaic module.

The invention discloses a 6xxx/7xxx aluminum alloy composite. The 6xxx/7xxx aluminum alloy composite comprises a core layer alloy and a coating layer alloy. A preparation method of the 6xxx/7xxx aluminum alloy composite comprises the steps that (1) preparation of the core layer alloy and the coating layer alloy plates is carried out; (2) surface treatment is carried out; (3) welding fixing is carried out; (4) preheating and hot rolling are carried out; (5) a cutting plate is transversely cut; (6) solution hardening is carried out; (7) stretching is carried out; (8) aging is carried out; and (9) saw cutting is carried out, and thus the finished 6xxx/7xxx aluminum alloy composite is obtained. The 6xxx/7xxx aluminum alloy composite is prepared by a rolling complex mode, and technologies of the solution hardening and the aging are limited at the same time, so that the 6xxx/7xxx aluminum alloy composite obtains high strength, has the characteristic of an excellent anodic oxidation effect, can meet the requirement of a high-end electronic product on the appearance and strength, is an ideal material for manufacturing an appearance piece of the electronic product and has very high utilization potentiality.

The invention discloses a production technique of concentrated clear persimmon juice. When being used for producing persimmon juice, the technique can concentratedly consume the raw material in a short time in the harvesting time of persimmon fruit, thereby enhancing economic value of persimmon. Orderly heating and cooling in combination with enzymolysis are used for removing pectin and starch which affect the clear juice, and the clear and bright juice is obtained through centrifugal separation. The low-temperature distillation is used for concentration in the concentration stage, thereby controlling the conditions in the whole technical process and maintaining the nutritional ingredients in fruit to the maximum, and the color and flavor of the fruit juice are maintained to the maximum.

The invention discloses a friction-resistant aluminum alloy hub spinning process. Main procedures of the process comprise the steps of melting, casting pre-forming, homogenizing treatment, heating spinning, pre-heat treatment, shot blasting, spinning, heat treatment, shot blasting, machining and coating. Heat-spinning plastic deformation can make up superfine loosening defects, so that mechanical performance of a hub is improved; and the casting spinning new technology greatly improves the overall strength and corrosion resistance of a wheel, the machining allowance is greatly reduced, the service life of the wheel is significantly prolonged, safety of the wheel is significantly improved, vehicle weight reducing and oil saving are facilitated, and the wheel production cost is decreased.

The invention provides a PMMA/ABS (polymethyl methacrylate/acrylonitrile butadiene styrene) composite material and a manufacturing method, which can solve the problems of poor thermal resistance, scraping resistance and high surface gloss and insufficiency in complex product molding requirements existing in the prior art. In the technical scheme, the composite material comprises the following components in parts by weight: 40-58 parts of ABS, 30-45 parts of polymethylmethacrylate, 5-12 parts of styrene-acrylonitrile, 0.1-0.3 part of antioxidant, 0.05-0.1 part of auxiliary antioxidant and 1.0-1.5 parts of lubricant. Through specific compound formulation, the invention ensures a PMMA/ABS alloy material has excellent thermal property, scraping resistance and high surface gloss and meets the molding requirements for the complex products, and improves processing property of materials.

The invention discloses an inverted punching and riveting machine and a riveting method thereof. The punching and riveting machine comprises a worktable, a fixture, a punch and an oil cylinder, the punch consists of one or more than one punch needles, an upper die and a lower die, the punch and the oil cylinder are arranged on the lower side of the worktable in an inverted manner, a top plate, a slider and a sensing device with a magnet and a check block are disposed on the upper side of the worktable, the slider is used for mounting the fixture and is limited by the sensing device with the magnet and the check block, a pre-tightening device for tightening the fixture in advance is arranged on the punch, the oil cylinder is fixedly connected with the lower die, the punch needles penetrate through the upper die, and the lower end surface of each punch needle is abutted onto the lower die. The punch and the oil cylinder are arranged on the lower side of the worktable in the inverted manner, accordingly, the structure of the punching and riveting machine is compact and small, spaces are saved, the gravity center of the punching and riveting machine is low, a plurality of rivets can be simultaneously placed on workpieces to be riveted in advance and are punched to deform by the aid of the punch needles at one step, machining efficiency is greatly improved, and the rivets are impacted in a closed area and are quite safe.

Aluminum alloy wheel hot spinning process to improve the overall strength of the wheel. The main process of the process is melting-casting pre-forming-homogenization treatment-heating spinning-preheating treatment-shot peening-spinning-heat treatment-shot peening-machine Plus‑coating. The plastic deformation of hot spinning can bridge the fine loose defects, thereby improving the mechanical properties of the wheel hub. The new casting and spinning process greatly improves the overall strength and corrosion resistance of the wheel, while the machining allowance is greatly reduced, and the service life and safety of the wheel are improved. Significantly improved, which is conducive to vehicle weight reduction and fuel saving, and the production cost of wheels is reduced.

The invention provides a Decitabine freeze-dried preparation and a preparation method thereof. The solution before being subject to freeze-drying process comprises Decitabine, organic solvent, pH regulator, and water for injection. The preparation method comprises the following steps: uniformly dispersing Decitabine in the organic solvent, putting the mixture in a 0-10 DEG C solution of water forinjection dissolving the pH regulator to dissolve Decitabine completely, so as to let the organic solvent account for 0.3-4.0 % of the total volume of the final mixture; then filtering, degerming, carrying out split charging in glass bottles, carrying out freeze drying to remove the organic solvent and the water for injection, so as to obtain the Decitabine freeze-dried preparation for clinical use. According to the invention, in the freeze-dried preparation, the content of the organic solvent residues is less than 0.8%, the preparation process is simple and convenient, the production steps are easy to control, the pollution to production equipment and environment caused by the organic solvent is reduced, and the product quality is guaranteed.

The invention provides modified plastic for laser welding. The modified plastic is prepared in the way that a perylene-series black toner is added into a base material through which laser can penetrate, the perylene-series black toner accounts for 0.05-5% of the modified plastic according to mass percent, and laser can penetrate the modified plastic at 800-1,100 nm. The invention further providesa preparation method of the modified plastic for laser welding. The invention provides the modified plastic, which is high in laser transmittivity, easy to dye, low in mobility and good in weather fastness and can meet the requirements on performance and appearance in case of long-time exposure, and application of the laser welding technology to the field of automobile interior and exterior trimming is greatly expanded.

The invention provides a heat radiating method and device, wherein the heat radiating method comprises the following steps of: detecting a temperature of a terminal device in real time; and driving a telescopic heat radiating fin to extend towards the outside of the terminal device according to the temperature and an unfolding condition. The heat radiating method and device not only meet the requirements on the terminal for the appearance and the volume, but also realize good heat radiation.