13 results about "Automotive coating" patented technology

This utility model relates to the field of automotive painting auxiliary equipment technology, specifically an auxiliary trolley for installing an electrophoresis chamber for automotive pre-painting. It includes a power mechanism, a main frame of the trolley, kick plates, railings, limiting grooves, a railing door, a trolley positioning and locking mechanism, a patterned steel plate, and a lifting mechanism. The power mechanism is located on both sides of the main frame of the trolley. The railings are fixed along the four perimeters of the main frame, and the kick plates are fixed around the perimeter of the railings. A railing door is located on one side of the railing above one set of power mechanisms. Four trolley positioning and locking mechanisms are respectively located on the main frame of the trolley. Each railing corresponding to a positioning and locking mechanism has a limiting groove. The patterned steel plate is fixedly laid on the upper surface of the main frame of the trolley. The lifting mechanism is located inside the installation auxiliary trolley. This utility model allows for rapid movement and changes in the construction area, greatly shortening the work surface transfer time and improving installation efficiency. It is faster and more labor-saving than manual handling.

The invention relates to the technical field of automobile coatings, in particular to a primer for a nylon and polyphenyl ether composite material and a preparation method of the primer. The primer comprises the following components in parts by weight: 30-40 parts of hydroxy acrylic resin, 1-5 parts of amorphous polyester resin, 1-5 parts of a dispersing agent, 0-1 part of an anti-settling aid, 0-1 part of a flatting agent, 0-1 part of carbon black, 5-20 parts of titanium dioxide, 5-10 parts of filler and 20-40 parts of a solvent. Compared with the prior art, through the synergistic effect of the hydroxy acrylic resin and the amorphous polyester resin, the adhesive force of the primer to a nylon and polyphenyl ether composite material base material is remarkably improved, and particularly, the high-pressure water washing resistance is greatly improved; the key technical problem that the adhesive force of the coated composite material does not reach the standard is effectively solved.

This invention discloses a high-solids-content silicon-containing multi-arm star-shaped hydroxyl polyester for antifouling automotive coatings and its preparation method. The preparation method includes the following steps: mixing 1,3-dihydroxymethylurea, polyol, and caprolactone, adding an acid catalyst for reaction, and after the caprolactone has completely reacted, adding a single-ended epoxy-based polysiloxane and a cationic ring-opening catalyst dropwise. After the addition is complete, the reaction continues until the epoxy value decreases to below 1% of the initial value. Then, distilled water is added to decompose the cationic ring-opening catalyst. The mixture is then distilled under high vacuum conditions and cooled before being discharged to obtain the high-solids-content silicon-containing multi-arm star-shaped hydroxyl polyester. The high-solids-content silicon-containing multi-arm star-shaped hydroxyl polyester of this invention has advantages such as long activation period, low application viscosity, high application solids content, good chemical resistance of the coating film, fluorine-free properties, and good stain resistance when applied to polyurethane coatings.

This application provides a water-based paint, its preparation method, an automotive coating, and an automobile. By weight, it comprises the following components: 5-30 parts of a water-based polyester-modified acrylic resin secondary dispersion, 20-50 parts of a water-based hydroxyl acrylic resin secondary dispersion, 5-15 parts of a water-soluble acrylic resin, 5-15 parts of an acrylic-modified polyester dispersion, 8-13 parts of an amino resin, 1-2 parts of a dispersant, 2-6 parts of an additive, 5-20 parts of a pigment, 1-5 parts of a solvent, and 15-25 parts of water; wherein the hydroxyl content in the solution of the water-based hydroxyl acrylic resin secondary dispersion is 2.5%-5% by weight, and the hydroxyl content in the solution of the water-based polyester-modified acrylic resin secondary dispersion is 3%-5% by weight. The water-based paint of this application, with its components working synergistically, produces a water-based color paste with excellent hardness, gloss, and resistance to gasoline, water, damp heat, and salt spray.

The utility model discloses a kind of automobile coating production systems, belong to coating production field, sequentially including premixing system, grinding system, paint mixing system and filtering system, premixing material discharge pipe is connected with the feed inlet of grinding system, grinding fine slurry discharge pipe is connected with the first paint mixing feed inlet of paint mixing system, paint mixing discharge pipe is connected with the feed inlet of filtering system, premixing pigment feed pipe is connected with first tubular screw conveyor, premixing filler feed pipe is connected with second tubular screw conveyor.The utility model can realize continuous production, product uniformity is better, avoid the problem that product is uneven and leads to poor quality.

This invention discloses a method for preparing and applying a high-bird-drop-resistant clear coat for automobiles, belonging to the field of automotive coating technology. This invention constructs a special ternary crosslinking network of "acrylic resin-amino resin-blocked isocyanate" and introduces a functional resin containing urethane bonds (-NH-CO-O-) as an acid-resistant modifying component to prepare a high-performance single-component solvent-based clear coat. The method first constructs a basic crosslinking system through the pre-dispersion of multiple resins, then uses leveling agents, drying agents, and other additives for synergistic compounding and regulation, finally obtaining the finished product. The clear coat of this invention utilizes the high chemical inertness of urethane bonds to significantly improve the paint film's resistance to acidic substances in bird droppings, achieving a bird dropping resistance rating of Rbd2 or higher, while maintaining the ease of application of a single-component system.

This application relates to a nozzle and adhesive spraying device for automotive body painting, belonging to the technical field of automotive coating equipment. It includes a nozzle body with a fan-shaped diffusion cavity inside. One end of the nozzle body has a feed channel communicating with the small end of the fan-shaped diffusion cavity, and the other end has an outlet communicating with the large end of the fan-shaped diffusion cavity. The outlet is an arc-shaped slit with the same curvature as the large end of the fan-shaped diffusion cavity, and the symmetry plane of the outlet coincides with the symmetry plane of the fan-shaped diffusion cavity. Because the arc-shaped slit outlet has the same curvature as the large end of the fan-shaped diffusion cavity, and the symmetry plane of the outlet coincides with the symmetry plane of the fan-shaped diffusion cavity, the flow direction of the adhesive at the slit outlet matches the expansion direction of the fan-shaped diffusion cavity. This reduces the accumulation or turbulence of the adhesive at the edge of the outlet, making the travel of the adhesive strip sprayed from any position of the outlet more consistent and the thickness uniform, meeting process requirements.

This invention relates to the field of automotive surface treatment technology and discloses a method for enhancing the weather resistance of nanocomposite automotive coatings. This method aims to address the defects of existing nanocoatings, such as stress imbalance, brittle cracking, and photo-induced oxidative degradation. It is characterized by comprising: preparing nanoparticles with an inorganic oxide core and a flexible polyorganosiloxane shell; constructing a hybrid additive containing doped cerium dioxide and a hindered amine stabilizer; constructing a multi-level interwoven film matrix using fluorinated modified resin and branched polyester; and achieving a continuous gradient distribution of coating modulus through gradient modulus control technology. Through the above scheme, this application achieves stress buffering between the inorganic hard core and the organic matrix, suppresses photocatalytic activity, and significantly enhances the coating's high and low temperature resistance, mechanical strength, and long-term weather resistance stability.

The application discloses a kind of preparation methods of phase change heat insulation automobile paint, belong to coating preparation technical field, including automobile paint, automobile paint includes thermosetting hydroxyl acrylic resin, heat insulation microparticle, coating solvent, diluent, dispersing agent, rheological aid, leveling agent, ultraviolet absorber;The preparation method includes the following steps: S1, the core layer microparticle is prepared by mixing reflective microparticle and phase change material heated to molten state, S2, the oil phase of methyl methacrylate, core layer microparticle, oil phase solvent, initiator, which is mixed with the water phase of deionized water, emulsifier, is made into emulsion, and the heat insulation microparticle is obtained by heating emulsion and reacting, S3, coating solvent, diluent, thermosetting hydroxyl acrylic resin, heat insulation microparticle, dispersing agent, rheological aid, leveling agent, ultraviolet absorber are sequentially mixed and stirred uniformly to obtain automobile paint;The automobile paint of the application can improve the heat insulation effect of automobile and slow down the amplitude of the temperature rise in the automobile.

This utility model discloses an adjustable-angle coating device, comprising: a closed coating chamber, wherein several paint tanks are symmetrically distributed in a cross shape on the inner center of the closed coating chamber, and the opposite sides of each paint tank are fixedly connected to the closed coating chamber. One-way valves are symmetrically mounted on the opposite sides of each paint tank, and guide pipes are fixedly connected to the opposite ends of each one-way valve. Elliptical clamps are fixedly connected to the opposite ends of each guide pipe. The opposing elliptical clamps provide a horizontal elastic clamping operation for the automotive coating panel, allowing for quick insertion and vertical mounting without abrading the outer surface of the panel. Simultaneously, the guide pipes, in conjunction with the paint tanks, inject paint into the clamps, ensuring that the contact area with the panel is also coated with paint, avoiding common clamping dead angles that affect coating uniformity and prolong coating time.

This application discloses a test method for the influence of a skid-mounted anti-stick coating on the pretreatment electrophoresis bath solution, relating to the field of automotive coating technology. The method includes: S1, setting up experimental conditions simulating a production site: determining the size of the skid-mounted anti-stick coating test piece and preparing the test piece, preparing experimental equipment, configuring the new pretreatment and electrophoresis bath solutions, and setting the bath solution and related experimental parameters based on production line parameters; determining the size of the skid-mounted anti-stick coating test piece by proportionally converting the actual volume of the production line tank, the maximum area of ​​the skids simultaneously entering the tank, and the amount of bath solution that the experimental equipment can hold; S2, initial bath solution detection and test piece preparation: using experimental equipment to detect the parameters and infrared spectral elements of the newly configured bath solution; when the bath solution parameters meet the median of the production specified threshold, preparing the initial phosphating test piece CP-P0 and the initial electrophoresis test piece CP-ED0; S3, immersing the coating test piece in the bath solution and recording its state; S4, post-immersion bath solution detection and test piece preparation.

This invention belongs to the field of automotive coating technology, specifically relating to a wet-on-wet waterborne automotive intermediate coating based on interface self-reinforcement and multi-network synergy, its preparation method, and application. It consists of the following components: a waterborne main resin system, amino resin, an aqueous solution of zirconium carbonate ammonium, polyethylene glycol-block-polycaprolactone-urea copolymer, flash-drying wax emulsion, a volatile pH adjuster, solvent, additives, waterborne colorant, and water. The intermediate coating of this invention utilizes the thermosensitive properties of zirconium carbonate to rapidly form an ionic cross-linked network during flash-drying, instantly enhancing wet film strength and fundamentally preventing problems such as undercoating and bleeding. Through the synergistic effect of the chemical cross-linking of the amino resin and the dynamic hydrogen bond network of the thermosensitive hydrogen bond enhancer, the coating film simultaneously possesses high hardness, chemical resistance, and excellent flexibility and stone chip resistance. The flash-drying wax emulsion forms a network on the coating film surface, improving scratch resistance; during baking, it melts and interpenetrates with the upper and lower coatings, forming a reinforced interface and locking in interlayer adhesion.

This application relates to a door electrophoresis anti-opening fixture, belonging to the field of automotive coating manufacturing technology. The fixture includes a first limiting member, a second limiting member, and a connecting member. The first limiting member is used to connect to the vehicle body and has a first groove for accommodating the vehicle body. The second limiting member is used to connect to the door and has a second groove for accommodating the door, the shape of which matches the partial structural contour of the door. The connecting member is connected to both the first and second limiting members. This door electrophoresis anti-opening fixture, through the engagement of the first limiting member with the vehicle body, the engagement of the second limiting member with the door, and the cooperation with the connecting member, not only significantly improves operational convenience and optimizes production time, but also effectively reduces the incidence of equipment collision accidents caused by door shaking through a stable and reliable limiting effect.