30results about How to "Uniform and firm attachment" patented technology

The invention relates to a colored stainless steel based on ion implantation and a preparation method thereof. The technical scheme is as follows: placing a stainless steel to be colored in a vacuum chamber of an ion implantation apparatus, vacuumizing to 0.1-1*10<-5>Pa, and implanting ions on the surface of the stainless steel to obtain the colored stainless steel, wherein the accelerating voltage for ion implantation is 10-100kV, and the ion implantation amount is 1*10<17>-1*10<19> ions / cm<2>; or placing a stainless steel to be colored in a vacuum chamber of an ion implantation apparatus, vacuumizing to 0.1-1*10<-5>Pa, and implanting ions on the surface of the stainless steel, wherein the accelerating voltage for ion implantation is 10-100kV, and the ion implantation amount is 5*10<15>-5*10<19> ions / cm<2>; and taking out, carrying out heat treatment, and cooling to room temperature in the furnace to obtain the colored stainless steel. The invention has the advantages of simple process and clean environment, and the obtained colored stainless steel has the characteristics of multiple color varieties, high reproducibility, uniform color, beautiful appearance, high durability and no separation. Compared with the stainless steel prior to preparation, the surface hardness and the corrosion resistance are obviously improved.

The invention discloses a flame-retardant high-temperature-resistant polyimide composite board and a preparation method thereof. The preparation method comprises the steps of soaking a polyimide board into coating slurry, taking out the polyimide board after 3-5 minutes, heating at 90 DEG C for 5-8 minutes, soaking the polyimide board into the coating slurry again, taking out the polyimide board after 8-12 minutes, heating at 110 DEG C for 10-15 minutes, and finally carrying out vacuum treatment at 155 DEG C for 40-55 minutes, so as to obtain the flame-retardant high-temperature-resistant polyimide composite board, wherein the thickness of the polyimide board is 92%-95% of that of the flame-retardant high-temperature-resistant polyimide composite board. Tests prove that the glass-transition temperature of the flame-retardant high-temperature-resistant polyimide composite board is 302 DEG C, the initial thermal weight loss temperature is 406 DEG C, the oxygen index is 45, the residual rate at 700 DEG C is 37%, the bending strength is 62 MPa, a fishing edge is not adhered with a cutter, and the cutter does not need to be exchanged after 500 meters of the board is cut.

The invention particularly relates to antibacterial stainless steel and a preparing method thereof. According to the technical scheme of the antibacterial stainless steel and the preparing method thereof, stainless steel obtained after surface pretreatment is put into a dopamine buffer solution to be deposited for 0.1 h to 72 h under the condition with the temperature ranging from -5 DEG C to 40 DEG C; then the obtained stainless steel is put into a solution containing titanium ions to be deposited for 0.1 h to 6 h; and finally the obtained stainless steel is put into a solution containing silver ions to be deposited for 0.1 h to 6 h, and therefore the antibacterial stainless steel is obtained. The concentration of the dopamine buffer solution ranges from 0.01 mol / L to 1 mol / L, the concentration of the solution containing the titanium ions ranges from 0.001 mol / L to 1 mol / L, and the concentration of the solution containing the silver ions ranges from 0.001 mol / L to 1 mol / L. By means of the antibacterial stainless steel and the preparing method thereof, the technology is simple, environment friendliness is achieved, and the cost is low; the surface antibacterial nanometer film layer structure of the antibacterial stainless steel prepared through the method is well-defined and orderly, is firmly combined with a base material, is high in corrosion resistance and hardness and has good antibacterial performance both under the illumination condition and the non-illumination condition.

The invention relates to the technical field of silk stockings, in particular to moisturizing silk stockings and a production process thereof, the moisturizing silk stockings are formed by weaving double-layer wrapping silk, and the wrapping silk comprises spandex and chinlon. And the spandex is anti-raveling spandex. The chinlon yarn contains gold sodium hyaluronate particles, and the gold sodium hyaluronate particles are the combination of sodium hyaluronate and gold spheres. The production process comprises the steps of manufacturing the wrapping silk, stabilizing the wrapping silk, weaving a semi-finished product of the silk stocking, sewing a white blank of the silk stocking, and dyeing and shaping the white blank of the silk stocking. Compared with the prior art, the silk stockings have the advantages that the silk stockings are sewn through the wrapping silk made of the chinlon containing the gold sodium hyaluronate particles, synthesis of hyaluronic acid in a human body is promoted, the silk stockings have the moisturizing and water supplementing functions, leg skin is prevented from being dry, and the health care effect is good. The content of gold sodium hyaluronate particles in the silk stockings washed with water still has a good moisturizing effect.

A kind of photochromic PET film preparation process that can be durable, including WO 3 , TiO 2 The 8% glycerol solution was added to the composite sol with a molecular ratio of 22:1:1-15:1:1 to ZnO to form a photochromic solution; the PET base film was transferred to the soaking kettle, and after vertical soaking, After oblique soaking, liquid control, and drying, the upper guide roller guides the upper film, and the lower guide roller guides the PET base film and the lower film. The final structure of the three lamination is the upper film-upper photochromic layer-PET Film formation of the base film-under the photochromic layer-under the cover film. The film formed in this way has uniform and excellent optical properties, while avoiding inter-film peeling, and has better durability in use.

The invention provides a method for producing a car mold through a lost foam casting process, and particularly relates to the technical field of car mold manufacturing. The lost foam casting method isadopted for preparing the car mold, after a foam model is coated with a coating, shock chilling drying is carried out, the coating is evenly and stably attached to the model, through a turnover sandadding vibration compaction method of a sand box, quartz sand is filled fully, and is not prone to collapse and burning, the method is simple and easy to operate, the parameters are controllable, andthe method is suitable for large-scale production. The prepared car mold has two types, one type is composed of an upper mold and a lower mold, the other type is composed of a female mold, a male moldand a blank holder, the hardness reaches above 310 HB, the tensile strength reaches above 370 MPa, and the two types both have the higher wear-resistance and anti-deforming properties.

The invention discloses a method for surface treatment of nickel-chromium alloy wire. The method comprises: obtaining nickel-chromium alloy wire, and using HNO 3 solution pretreatment to obtain pretreated nickel-chromium alloy wire; anneal the pretreated nickel-chromium alloy wire in an annealing furnace to obtain a nickel-chromium alloy wire with a uniform emerald green oxide film on the surface, wherein the annealed An air stirrer is provided in the furnace, a vent is provided on the furnace cover of the annealing furnace, the annealing temperature is 890-930° C., and the annealing time is 2.5-3.5 hours. The invention can obtain the nickel-chromium alloy wire with a uniform emerald green oxide film on the surface, the oxidation color of the nickel-chromium alloy wire is evenly and stably attached, and the color is emerald green, which satisfies the needs of customers to the greatest extent and greatly improves the quality of products. help.

The invention discloses a preparation method of silane-modified graphene, a sheet metal part, an air conditioner outdoor unit, and an air conditioner, wherein the preparation method of the silane-modified graphene comprises the following steps: adding graphene oxide and Solvent; stir at room temperature for 12h-36h, ultrasonically oscillate for 30min-60min; add silane coupling agent to the reactor; heat up to 50°C-200°C, stir for 12h-36h, until the mixture gradually turns from golden brown to black Brown, no reaction. The silane-modified graphene prepared by the invention can effectively improve the anti-corrosion performance of sheet metal parts in heavy corrosion environments.

The invention relates to a preparation method of a zinc oxide nano-rod array on a stainless steel surface. The preparation method comprises orderly carrying out ultrasonic cleaning on stainless steel through anhydrous ethanol and distilled water, carrying out blow-drying, immersing the stainless steel in a mixed solution and carrying out irradiation on the stainless steel through a microwave oven 1-5 times to obtain the zinc oxide nano-rod array on the stainless steel surface, wherein in each irradiation process, irradiation time is in a range of 0.5-10min and irradiation interval time is in a range of 5-10s. The mixed solution comprises a zinc ion solution, an ammonia ion solution and a graphene oxide solution, the zinc ion solution has a concentration of 0.001-0.1mol / L, the ammonia ion solution has a concentration of 0.001-0.1mol / L and the graphene oxide solution has a concentration of 0.01-2g / L. The preparation method has simple processes, is fast and environmentally friendly and has a low cost. The zinc oxide nano-rod array on the stainless steel surface has excellent photocatalytic and photoelectrochemical performances, nanostructured morphology, a controllable microstructure, firm combination with a base, good corrosion resistance and high hardness.