44results about How to "Improve finishing performance" patented technology

The invention discloses an aging-resistant PC-PBT plastic alloy, which is composed of the following components in weight part: 100 parts of PC, 20-40 parts of PBT, 4-8 parts of compatibilizer and 0.5-1.5 parts of age resister. The PC-PBT plastic alloy disclosed by the invention has the advantages of good thermal tolerance, good stress cracking resistance, excellent abrasive resistance, excellent chemical corrosive resistance, high low-temperature impact strength, easiness in machining and good coating property, and is mainly applied to bumpers, chassis and panels of superior quality cars, fenders of motorcycles and the like. The aging-resistant PC-PBT plastic alloy also has excellent thermal aging property, thereby being suitable for use in the extremely high temperature environment.

The invention belongs to the filed of chemical modification processing of paint, in particular relates to a urush modulating method, and provides a high-quality raw lacquer modulating method. The modulating process comprises the following steps: filtering raw lacquer by 300-mesh grass cloth to remove impurities; pouring settled tung oil into a polyreaction pot, and adding bismuth nitrate into the polyreaction pot; regulating the acid value of the tung oil to make the acid value reach between 6.7 and 6.9; keeping the temperature of the tung oil after acid value regulation between 35 and 45 DEG C and adding the raw lacquer and a coloring material for mixing; and grinding the mixture of the raw lacquer, the tung oil and the coloring material, and packaging the mixture to obtain a finished product. The urush modulating method improves the labor production efficiency by adopting a novel process to shorten the drying time, improves the coating performance and physicochemical performance of urush, and makes products have high purity and good quality.

The invention relates to a special flooring waterborne polyurethane sub-gloss varnish product and a preparation method and application thereof. Particularly, the varnish product comprises a first container and a second container; the first container comprises a component A which is prepared from, by weight, 40-70 parts of polyacrylate dispersoid, 0.01-5 parts of siloxane dispersing agent, 0.01-5 parts of organosilicone defoaming agent and 0.01-5 parts of non-organosilicone defoaming agent; the second container comprises a component B which is prepared from 10-35 parts by weight of isocyanate curing agent. The invention further discloses the preparation method and application of the varnish product. The varnish product is excellent in surface finishing effect and chemical resistance, other comprehensive properties are balanced, and the varnish product can well meet various indexes of requirements of the national standard.

The invention relates to an ultraviolet (UV) base oil metal tank UV printing and coating method which includes the following steps: 1) pre-printing computer direct platemaking; 2) inner coating which includes adopting inner coating to coat the inner surface; 3) conducting instantaneous high temperature processing on the surface of a base material; 4) instantaneous continuous completion of UV base oil coating, UV base oil solidification through a UV lamp and UV ink printing; 5) follow-up continuous solidification of a UV ink layer through a UV lamp group; 6) conducting polishing and coating to protect printed patterns from being scrapped and damaged. By means of the method, the UV base oil outer coating replaces the traditional solvent type base oil outer coating, the film layer is thin, natural gas energy consumed by tunnel type drying room drying and solidification and waste gas discharged to the nature are greatly reduced, the energy is saved, and the environment is protected. In addition, the new process that the UV base oil coating and UV ink printing are finished together continuously is achieved, the printing and coating production efficiency can be greatly improved, and meanwhile coating capacity of a coating line is released.

The invention relates to living body detection of a biological recognition technology, and provides a living body video picture processing method and device, computer equipment and a storage medium. The method comprises the following steps: receiving a detection request of a living body video and storing the living body video into a memory; obtaining an original living body video data packet, andcalculating the number of pictures in the original living body video data packet; performing frame extraction on the pictures in the original living body video data packet according to the number of the pictures in the original living body video data packet to obtain a target picture; decoding the target picture to obtain a decoded target picture; and feeding back the decoded target picture to a bottom layer interface. The device, the computer equipment and the storage medium are all used for processing the living body video pictures based on the steps of the method. According to the method, intermediate processing links are reduced by directly operating in the memory, the living body video arrangement processing performance is improved, the processing speed of living body video detectiondecoding videos is increased, and the performance loss of a GPU is reduced.

The invention discloses copolymer of grafting maleic anhydride on molten polypropylene and a preparation method for the copolymer. The preparation method comprises the following steps of: uniformly stirring the following raw materials in percentage by weight: 85 to 98.6 percent of polypropylene, 0.5 to 8 percent of maleic anhydride, 0.5 to 10 percent of beta-pinene, 0.2 to 3.5 percent of initiator and 0.2 to 2 percent of antioxidant; and performing melt extrusion granulation by using a stepwise heating mode. A weight ratio of the maleic anhydride to the beta-pinene in the copolymer is 1:0.5-1:20. A second comonomer of beta-pinene is introduced, the grafting rate of grafting the maleic anhydride on the polypropylene is improved, and the beta-pinene has a crosslinking function and can keep the impact strength.

The invention discloses copolymer of glycidyl methacrylate and polypropylene and a preparation method thereof. The preparation method comprises the following steps of: uniformly stirring the following raw materials in percentage by weight: 85 to 98 percent of polypropylene, 0.5 to 8 percent of glycidyl methacrylate, 0.5 to 13 percent of divinylbenzene, 0.1 to 3.5 percent of initiator and 0.1 to 2 percent of antioxidant, and performing melt extrusion granulation by using a stepwise heating mode. A weight ratio of the glycidyl methacrylate to the divinylbenzene in the copolymer is 1:0.6-1:16. A second cograft monomer of divinylbenzene is introduced, and the grafting rate of grafting the glycidyl methacrylate on the polypropylene is improved.

The invention belongs to the filed of chemical modification processing of paint, in particular relates to a urush modulating method, and provides a high-quality raw lacquer modulating method. The modulating process comprises the following steps: filtering raw lacquer by 300-mesh grass cloth to remove impurities; pouring settled tung oil into a polyreaction pot, and adding bismuth nitrate into thepolyreaction pot; regulating the acid value of the tung oil to make the acid value reach between 6.7 and 6.9; keeping the temperature of the tung oil after acid value regulation between 35 and 45 DEGC and adding the raw lacquer and a coloring material for mixing; and grinding the mixture of the raw lacquer, the tung oil and the coloring material, and packaging the mixture to obtain a finished product. The urush modulating method improves the labor production efficiency by adopting a novel process to shorten the drying time, improves the coating performance and physicochemical performance of urush, and makes products have high purity and good quality.

The invention discloses a single-component modified silicone flame-retardant sealant and a preparation method thereof, and belongs to the field of high polymer materials. According to the single-component modified silicone flame-retardant sealant disclosed by the invention, siloxane-terminated polyether resin is used as a colloid skeleton raw material, so that the definition of modified silicone in national standard is met, and meanwhile, the problems that a traditional silicone adhesive product is poor in adhesion to a porous material, silicone oil is separated out and causes pollution, and surface coating cannot be carried out can be effectively solved; a halogen-free environment-friendly flame retardant is used, so that toxic gases such as halogen hydride and the like cannot be released due to high temperature under the condition of ensuring the flame retardant effect; and by matching with other components such as a UV-aging-resistant agent and a plasticizer, the obtained flame-retardant sealant product also has good mechanical properties and weather resistance and durability. The invention further provides a preparation method of the single-component modified silicone flame-retardant sealant, the method is simple in operation steps and low in requirements on instruments and process conditions, and industrial large-scale production can be realized.

The invention relates to a special flooring waterborne polyurethane sub-gloss varnish product and a preparation method and application thereof. Particularly, the varnish product comprises a first container and a second container; the first container comprises a component A which is prepared from, by weight, 40-70 parts of polyacrylate dispersoid, 0.01-5 parts of siloxane dispersing agent, 0.01-5 parts of organosilicone defoaming agent and 0.01-5 parts of non-organosilicone defoaming agent; the second container comprises a component B which is prepared from 10-35 parts by weight of isocyanate curing agent. The invention further discloses the preparation method and application of the varnish product. The varnish product is excellent in surface finishing effect and chemical resistance, other comprehensive properties are balanced, and the varnish product can well meet various indexes of requirements of the national standard.

The invention relates to a hot rolled steel plate for a container with yield strength of 750MPa and a manufacturing method thereof and solves the technical problem that rusty red scales are likely to be generated on the surface of the hot rolled steel plate for the container with yield strength of 750MPa and the production cost is high. The hot rolled steel plate for the container with yield strength of 750MPa provided by the invention comprises the chemical components in percentages by weight: 0.06-0.09% of C, 0.25-0.35% of Si, 1.65-1.75% of Mn, less than or equal to 0.015% of P, less than or equal to 0.003% of S, 0.050-0.070% of Nb, 0.085-0.095% of Ti, 0.0015-0.0045% of Ca, 0.02-0.005% of Alt and the balance of Fe and inevitable impurities. No rusty red scales are generated on the surface of the hot rolled steel plate provided by the invention, and the hot rolled steel plate is used for manufacturing panels and structural parts of containers.

The invention discloses a single-component silane-modified polyether sealant for ALC boards, which contains the following raw materials in parts by mass: 100 parts of silane-modified polyether resin, 90-150 parts of plasticizer, and 100-100 parts of filler 300 parts, 0~25 parts of pigment, 0~20 parts of thixotropic agent, 0.5~5 parts of UV absorber, 0.5~5 parts of light stabilizer, 0.5~5 parts of water remover, 2~3 parts of first adhesion promoter 0.5-1 part of the second adhesion promoter, 0.05-2 parts of the catalyst. The present invention selects silane-modified polyether resin with a linear structure of 16000-28000 g / mol in number average molecular weight and bis(acetylacetonate) dibutyltin and / or tetraethyl silicate and bis(acetyloxy) The reaction product of dibutyltin is matched, and the first adhesion promoter and the second adhesion promoter and other components are coordinated to prepare a one-component silane-modified polyether sealant for ALC boards, and the prepared single-component The silane-modified polyether sealant has ultra-low modulus, high elongation, fast curing, good ALC board adhesion, and is safe and environmentally friendly, with good stability and excellent coating performance.

The invention provides a flame-retardant and high-temperature resistant oriented particle board, which comprises a surface layer and a core layer, the surface layer is composed of large shavings; the core layer is composed of large shavings and fine shavings, and the paving angle between the surface layer and the core layer is 45-90°. The present invention also provides a method for preparing flame-retardant and high-temperature-resistant oriented strand board, including shavings, initial washing of shavings, drying, re-washing of shavings, draining, balancing, curing, drying, mixing, sizing, paving, hot pressing, Trimming, sanding. The beneficial effects of the present invention are: the flame-retardant and high-temperature-resistant oriented particle board of the present invention has good thermal stability, is not easy to delaminate and crack when heated, and can ensure stable flame-retardant performance; it is difficult to release toxic substances when heated; the added flame-retardant components can effectively adhere to On the surface of shavings, it has good flame retardant performance and can withstand high temperature attack; it has good physical and mechanical properties and good durability.

The invention discloses acrylate modified polyurethane resin for leather finish. The acrylate modified polyurethane resin for leather finish is characterized by being prepared from the following components in parts by weight: 50-65 parts of polyalcohol, 140.1-169.54 parts of solvent, 4-10 parts of chain extender micromolecular alcohol, 0.03-0.04 part of antioxidant, 16-34 parts of isocyanate, 0.02-0.03 parts of catalyst, 0.01-0.02 part of polymerization inhibitor, 2.1-3.6 parts of hydroxyl acrylate, 1.15-1.85 parts of end-capping reagent, 0.68-1 part of initiator and 55-77 parts of acrylic monomer. The invention further discloses a preparation method of the acrylate modified polyurethane resin for leather finish. By adopting polyurethane resin as a base material and acrylate as a main modifying material, the product provided by the invention has the advantages of two resins, and the cost is reduced by over 30% compared with that of pure polyurethane. The acrylate modified polyurethane resin for leather finish disclosed by the invention has excellent composite material performance and higher cost performance, so that the solid content is improved by over 50%.

The invention discloses an environment-friendly medium density fiberboard fiber preheating combination process and production equipment thereof, and belongs to the field of medium density fiberboard machining.The environment-friendly medium density fiberboard fiber preheating combination process and production equipment thereof comprise a bottom plate, two vertical plates are fixedly connected to the top face of the bottom plate in a front-back symmetry mode, and a conveying belt is installed between the vertical plates; a plurality of shells are fixedly connected to the side wall of the conveying belt, a fixing plate is fixedly connected to the top faces of the shells, a leakage net is arranged in a cavity of the fixing plate, a cover plate is movably connected to the top face of the leakage net, a driving mechanism is arranged on the side wall of the fixing plate, and two fixing mechanisms are arranged on the front side wall and the rear side wall of the cover plate respectively. Four supporting plates are fixedly connected to the top face of the bottom plate, the same microwave heating box is fixedly connected to the top faces of the supporting plates, and a steam injection heater is installed at the position, close to the left side, of the top face of the bottom plate.

The invention relates to a reaction injection molding technology for an automobile spoiler. The reaction injection molding technology comprises the following steps of 1, removing burrs in an automobile spoiler mold; 2, spraying a release agent in the automobile spoiler mold; 3, wiping the release agent; 7, adjusting the temperature of an upper mold body to be 80+ / -10 DEG C, and adjusting the temperature of a lower mold body to be 90+ / -10 DEG C; 8, carrying out curing and pressure maintaining, wherein the pressure maintaining time is 30+ / -10 s; and 9, opening the upper mold body and the lower mold body (opening the mold) to take out a product, namely the automobile spoiler. According to the reaction injection molding technology, polyether polyol (POLY), weighed isocyanate (ISO) and weighedmineral powder are mixed into liquid in proportion, the mixed liquid is injected into the automobile spoiler mold at the moment of mixing for curing and pressure maintaining so as to form the automobile spoiler, a thin-wall article is easily produced through the steps, the produced automobile spoiler has good coating performance and excellent mechanical properties, the product design is free, andin addition, the equipment and mold cost is low.

The invention relates to a three-dimensional embossed leather manufacturing method and belongs to the technical field of leather manufacturing. The method includes steps that the raw leather is sequentially subjected to leather grinding, spray filling, roll coating filling, static drying, rolling finish, embossing plate, surface grinding, and softening to become three-dimensional embossed leather,specifically, the step of spray filling includes that spraying a first filling on the surface of the ground raw leather; the spray quality is 5-10 g per square foot; and the first filling is composedof, by mass, 50%-55% of water, 30%-40% of a first aqueous acrylic resin dispersion, and 7%-15% of a first penetrant, and the water, the first aqueous acrylic resin dispersion and the first penetrantaccount for 100% in total. The finished three-dimensional embossed leather according to the method has a strong sense of three-dimensionality, has good peeling strength and a good coating effect, andthe method is relatively simple and convenient to promote.

The invention discloses an aging-resistant PC-PBT plastic alloy, which is composed of the following components in weight part: 100 parts of PC, 20-40 parts of PBT, 4-8 parts of compatibilizer and 0.5-1.5 parts of age resister. The PC-PBT plastic alloy disclosed by the invention has the advantages of good thermal tolerance, good stress cracking resistance, excellent abrasive resistance, excellent chemical corrosive resistance, high low-temperature impact strength, easiness in machining and good coating property, and is mainly applied to bumpers, chassis and panels of superior quality cars, fenders of motorcycles and the like. The aging-resistant PC-PBT plastic alloy also has excellent thermal aging property, thereby being suitable for use in the extremely high temperature environment.

A new process for preparing terephthaloyl chloride, carbon tetrachloride is used as solvent, Lewis acid is used as catalyst, terephthalic acid and methyl trichlorosilane are reacted at 40-77°C for 6-12h, hydrogen chloride gas enters the absorption device to produce into hydrochloric acid. After the reaction is completed, the solvent carbon tetrachloride is evaporated under reduced pressure for mechanical use, and then the product terephthaloyl chloride is evaporated under reduced pressure, the temperature is lowered, crystallized, and dried to obtain high-quality terephthaloyl chloride. After cooling the mother liquor and adding water to quench the Lewis acid, the by-product polymethylsilsesquioxane is subjected to solid-liquid separation and dried to obtain polymethylsilsesquioxane with good quality.