50results about How to "Guaranteed Surface Properties" patented technology

The invention discloses a high temperature-resistant ultralow temperature-cured epoxy polyester powdery coating. The high temperature-resistant ultralow temperature-cured epoxy polyester powdery coating solves the problem that the existing low temperature-cured epoxy polyester powdery coating has poor heat resistance and poor thermal conductivity so that in curing, temperatures in a coating film prepared from the existing low temperature-cured epoxy polyester powdery coating are not different and coating curing rates are not different and thus the coating film produces orange peel phenomenon and even crazes and coating film surface-effects are influenced. The high temperature-resistant ultralow temperature-cured epoxy polyester powdery coating is prepared from 30 to 40wt% of epoxy resin, 15 to 20wt% of polyester resin, 0.5 to 1.5wt% of polyarylene sulfide resin, 10 to 15wt% of titanium dioxide, 2 to 5wt% of nano-metal powder subjected to surface treatment, 0.5 to 1wt% of dibutyltin dilaurate, 1 to 3wt% of an assistant, 1 to 5wt% of sodium fluoride, 15 to 20wt% of a filling material and 10 to 15wt% of a pigment. The high temperature-resistant ultralow temperature-cured epoxy polyester powdery coating has a low curing temperature, good heat resistance, and physical and mechanical properties and chemical resistance satisfying industrial requirements.

The invention relates to a D450 electronic yarn impregnating agent and a preparation method thereof. The D450 electronic yarn impregnating agent is prepared from, by mass, 1.0%-10.0% of starch-type film-forming agent, 0.25%-1.5% of auxiliary film-forming agent, 0.5%-1.5% of lubricant, 0.2%-1.0% emulsifier, 0.5%-2.5% of plasticizer, 0.001%-0.01% of defoamer, 0.003%-0.03% of preservative and the balance water. In the D450 electronic yarn manufacturing technology process, the D450 electronic yarn impregnating agent is coated to glass fiber to form an impregnating agent film, abrasion of glass fiber tows can be effectively reduced, hairiness is effectively reduced, meanwhile the D450 electronic yarn impregnating agent also has higher mechanical strength, and the surface properties of electronic base cloth are ensured.

The invention discloses a continuous full-automatic control wrapping system for graphene powder. The system comprises a wrapping mechanism, an operating platform, an independent electrical control cabinet and a stepped supporting plate; and one side of the operating platform is rotatably connected with the stepped supporting plate. According to the system provided by the invention, a screw feederis provided with a screw feeding rod extending to the inner wall of the thick end of a special-shaped quartz furnace tube, and the outer wall of the thin end, close to a collection tank, of the special-shaped quartz furnace tube is provided with a radio frequency coil, so that the above structure can shorten the preparation process time of the material; wrapping of the graphene powder is completedthrough heating and cooling of the radio frequency coil and the inclined wrapping mechanism; quartz baffles are welded in the special-shaped quartz furnace tube, polytetrafluoroethylene strips extending to the inner wall of the special-shaped quartz furnace tube and adhering to the quartz baffles are fixed at the inner wall of a pair of magnetofluids, in the process of collision of the polytetrafluoroethylene strips and the quartz baffles, the powder material is prevented from being agglomerated into a block, and therefore the surface properties of the powder material are effectively ensured.

The invention discloses a waterborne emulsion type glazing golden varnish special for bicycles and a preparation method thereof. The invention relates to the waterborne emulsion type glazing golden varnish special for the bicycles. The waterborne emulsion type glazing golden varnish special for the bicycles comprises the following components by the mass percentage: 65%-75% of an acrylate emulsion,0.2%-0.3% of a pH regulator, 3%-8% of a cosolvent, 0.2%-0.4% of a defoamer, 7%-9% of amino resin, 0.8%-1.5% of a leveling agent, 0.8%-1.2% of an adhesive force promoter, 0.8%-1.2% of a thickener, and5%-20% of deionized water. The waterborne emulsion type glazing golden varnish special for the bicycles has the advantages of low VOC, high weather resistance, abrasion resistance, high gloss, good decorative effect, and easy construction, and can be applied to bicycles, electric bicycles and the like.

The invention provides a composite material laying compression roller with a laminating-type rubber covered roller structure. The composite material laying compression roller is provided with a metal mandrel which comprises a cylindrical mandrel body part as well as two bearing support parts correspondingly arranged at two ends of the mandrel body part; the bearing support parts and the mandrel body part are coaxially arranged, and the outer diameters of the bearing support parts are less than the outer diameter of the mandrel body part; the outer side surface of the mandrel body part is coated with an elastic rubber layer; the outer side of the elastic rubber layer is coated with a roller surface rubber layer. The composite material laying compression roller with the laminating-type rubber covered roller structure is convenient to process and manufacture and low in production cost, has long service life and favorable maintainability, and overcomes defects of the prior art.

The invention discloses a continuous fiber reinforced thermosetting flame-retardant prepreg and a preparation method thereof. The continuous fiber reinforced thermosetting flame-retardant prepreg comprises a prepreg resin and a continuous fiber fabric, and is prepared by an environment-friendly hot melting process, wherein the content of the prepreg resin in the flame-retardant prepreg is 38-45%, the prepreg resin is prepared from the following raw materials: an epoxy resin, a flame retardant, an auxiliary additive, a leveling additive, a coloring agent, a curing agent and an accelerant, the accelerant comprise a first accelerant and a second accelerant, the first accelerant is one or more of organic urea, thiourea or imidazole compounds, the second accelerant is complexed aromatic diamine, and the flame-retardant prepreg can realize a rapid hot-in and hot-out process at a high temperature of 140-160 DEG C, does not influence the mechanical properties of the molded material, can be rapidly cured and molded for 3-6 minutes, has excellent flame retardant property, can achieve the UL94V0 flame retardant level, and further can achieve spraying-free so as to eliminate the traditional grinding and spraying technological process.

The invention discloses a preparation method of a nitrogen-doped graphene material based on 4-amino-1,2,4-triazole-5-one. The method comprises the steps: dispersing graphene into deionized water; adding a 4-amino-1,2,4-triazole-5-one aqueous solution, heating for 30-60 min at the temperature of 50-100 DEG C, cooling to room temperature, and drying to obtain a graphene-coated 4-amino-1,2,4-triazole-5-one eutectic material; and grinding into powder, and heating for 1.5-6 h in a tubular furnace at the temperature of 500-800 DEG C to obtain the nitrogen-doped graphene material. The surface of the4-amino-1,2,4-triazole-5-one crystal is uniformly coated with graphene in the material obtained by the preparation method disclosed by the invention, and additives such as an adhesive and the like arenot needed, so that the surface performance of the 4-amino-1,2,4-triazole-5-one crystal is completely maintained.

The invention relates to a method for removing non-metallic inclusion in molten steel. The method comprises the following steps that: (1) a ladle filled with the molten steel is hoisted onto a slewing table, argon is blown through an argon blowing hole to stir, and the blowing argon is stopped after 2 minutes at most; (2) one or a plurality of amplitude varying poles are dipped into the molten steel, and an ultrasonic generator is started; (3) after the ultrasonic generator is started for one minute at most, the ultrasonic generator is shut off, and the amplitude varying poles are immediatelydisengaged from the molten steel and are returned to the standby position. The method for removing the non-metallic inclusion in the molten steel can further reduce the inclusion quantity in the molten steel, and can produce the molten steel with adequate small inclusion quantity or adequate small inclusion size, thereby achieving the production requirement of high purity steel.

The invention discloses an online pressure metal thermal treatment process and an online pressure metal thermal treatment device. According to the process, a pressure device is adopted to synchronously heat a workpiece and apply a pressure to the workpiece so as to realize thermal treatment and then discharging and cooling are automatically carried out. The metal thermal treatment device comprises a supporting body, a pressure mechanism, two heating mechanisms, a temperature control device, a time control device and a cooling mechanism, wherein the pressure mechanism comprises first and second pressure bases which are mounted in the supporting body and can be propped against each other and first and second driving mechanisms; first and second profiled grooves are respectively formed in the opposite surfaces of the first and second pressure bases; insulation structures are also arranged on the outer surfaces of the first and second pressure bases; the two heating mechanisms are respectively mounted in the first and second pressure bases; the temperature control accuracy of the temperature control device is 1 DEG C; the temperature control device is mounted outside the supporting body; the time control accuracy of the time control device is 1s; the time control device is mounted outside the supporting body; the cooling mechanism is mounted below the supporting body. According to the online pressure metal thermal treatment process and the online pressure metal thermal treatment device, the fact that the workpiece has qualified performance in the treatment process is guaranteed, and the phenomena of deformation, blowing-out discharging and the like are avoided.

The invention discloses an evaporation technology of a metallized polypropylene film dielectric capacitor. The technology comprises steps as follows: 1) surface treatment of a polypropylene film layer; 2) pretreatment of an evaporation material; 3) evaporation. An evaporation layer of a metallized polypropylene film dielectric capacitor obtained with the evaporation technology is firmly combined with a base material and has the excellent surface performance, and the obtained metallized polypropylene film dielectric capacitor is high in self-healing property and has the very high wet resistance.

The invention belongs to the technical field of material preparation, and in particular relates to a method for preparing nitrogen-doped graphene with furoxan derivatives as a nitrogen source. The method comprises: dispersing graphene in water to obtain a graphene aqueous solution; adding furoxan derivatives to the graphene aqueous solution, heating and stirring at 50-70°C for 30-60min, cooling to 20-40°C, and constant temperature Drying to obtain graphene-coated furoxan derivative eutectics; grinding the graphene-coated furoxan derivative eutectics into powder, and heating to 500-800°C, constant temperature for 3-5h, to obtain nitrogen doped graphene. In the nitrogen-doped graphene, the graphene is uniformly coated on the surface of the furoxan derivative crystal, without using additives such as adhesives, and completely maintains the surface properties of the furoxan derivative crystal.

A method for preparing a graphene material based on 5,5'-diamino-3,3'-1,2,4-triazole cobalt salt is disclosed. The method includes dispersing graphene into deionized water; adding an aqueous solutionof the 5,5'-diamino-3,3'-1,2,4-triazole cobalt salt; heating at 50-100 DEG C for 30-60 min; cooling to 0-4 DEG C; drying to obtain a 5,5'-diamino-3,3'-1,2,4-triazole cobalt salt eutectic substance coated with graphene; grinding the substance into powder; and heating the powder in a tubular furnace at 500-800 DEG C for 3-5 h to obtain the nitrogen--cobalt co-doped graphene material. In the obtainedmaterial, 5,5'-diamino-3,3'-1,2,4-triazole cobalt salt crystals are evenly coated with the graphene, and surface performance of the 5,5'-diamino-3,3'-1,2,4-triazole cobalt salt crystals can be completely maintained without the use of an adhesive or other auxiliary agents.

The invention discloses a woven bag internally covering film. The internally covering film comprises the components by the weight percentage: 75%-85% of EVA 14-2; 15%-10% of LLDPE 18; 6%-3% of HDPE 9455; and 4%-2% of linear 7042 or 7047. The woven bag internally covering film can be directly internally adhered to woven cloth, replaces an internally covering film having a layer structure; and the woven bag internally covering film has smooth surface, has strong adhesion ability on the woven cloth, and reduces the manufacturing cost of a woven bag with the internally covering film.

The invention discloses a high temperature-resistant ultralow temperature-cured epoxy polyester powdery coating. The high temperature-resistant ultralow temperature-cured epoxy polyester powdery coating solves the problem that the existing low temperature-cured epoxy polyester powdery coating has poor heat resistance and poor thermal conductivity so that in curing, temperatures in a coating film prepared from the existing low temperature-cured epoxy polyester powdery coating are not different and coating curing rates are not different and thus the coating film produces orange peel phenomenon and even crazes and coating film surface-effects are influenced. The high temperature-resistant ultralow temperature-cured epoxy polyester powdery coating is prepared from 30 to 40wt% of epoxy resin, 15 to 20wt% of polyester resin, 0.5 to 1.5wt% of polyarylene sulfide resin, 10 to 15wt% of titanium dioxide, 2 to 5wt% of nano-metal powder subjected to surface treatment, 0.5 to 1wt% of dibutyltin dilaurate, 1 to 3wt% of an assistant, 1 to 5wt% of sodium fluoride, 15 to 20wt% of a filling material and 10 to 15wt% of a pigment. The high temperature-resistant ultralow temperature-cured epoxy polyester powdery coating has a low curing temperature, good heat resistance, and physical and mechanical properties and chemical resistance satisfying industrial requirements.

The invention provides a nylon carbon fiber. The nylon carbon fiber comprises a core layer and a skin layer, and is prepared by composite spinning of the core layer made of a nylon material and the skin layer made of a carbon black material through a composite spinning assembly; the core layer deviates from the circle center of the skin layer and is not completely wrapped in the skin layer; a concave transition area is formed in the adjacent connection position of the core layer and the skin layer, and the core layer area of the transition area is in a sticky state through physicochemical treatment and is coated with a metal coating; and the nylon carbon fiber forms anisotropic manifestation on the periphery of the cross section by taking the geometric center as the center. The nylon carbon fiber disclosed by the invention has excellent electrical conductivity and anisotropy, has dual characteristics of nylon and carbon fiber, also has the advantages of metal fiber, is convenient for later manufacturing and treatment, and has application prospects in various fields.

The invention discloses an environment-friendly water paint used in pump industry and a preparation method thereof and relates to the technical field of anticorrosive coatings. The environment-friendly water paint is prepared from, by weight, waterborne resin comprising 15-25% of polyester polyol, assistants comprising 0.12-0.35% of film forming additive, 0.9-2.1% of neutralizer, 0.18-1.5% of defoamer, 0.15-0.38% of dispersant, 30-37% of ionic water, 0.1-0.35% of wetting agent and 0.75-1.67% of drier, packing comprising 0.31-0.67% of carbon black, 5-12% of iron oxide black, 5-8.8% of 808 anti-rust material, 2.5-5.3% of compound zinc phosphate, 5.5-8.8% of compound ferrotitanium powder, 7-11.6% of barium sulfate and 1-3.3% of talcum powder, 4.3-7.8% of anti-sinking thixotropic agent. The paint has good environmental friendliness and meets the national standard requirements in the aspects of corrosion, rusting and impact resistance and the like.

The invention discloses a ceramic brake pad process. The ceramic brake pad process includes the following steps: P2, mixing materials; P3, filtering; P4, hot pressing forming; P5, heat treatment; P6, grinding treatment; P7, surface treatment; P8. Spraying; P9. Packaging: According to the requirements, use a sealing machine and a heat shrinking machine to shrink the finished brake pads in a vacuum through a plastic film, and then pack them into boxes for storage to complete the manufacture of the brake pads. A kind of ceramics provided by the invention The brake pad process adopts reasonable materials and proportions, and filters and sieves after mixing to ensure fineness, improve the compactness of hot pressing, ensure structural strength and wear resistance, and perform heat treatment and surface treatment after hot pressing , to ensure the surface properties of the brake pads, improve the stability of the brakes, facilitate production and processing, and ensure the safety of use.