Sound Dampening Coatings for Automotives

Low-frequency damping material comprising a vibration-damping substrate, a sound-absorbing filler, and a dispersant. The material comprises a vibration-damping substrate comprising acrylic emulsion, polyurethane resin, polyether polyol, silicone rubber emulsion, polyester resin, expanded graphite, hard particles, and carbon fiber. The sound-absorbing filler comprises polyacrylonitrile fiber and ceramsite. The dispersant is added during the preparation process to enhance the material's performance characteristics, including improved frequency response and temperature stability. The material can be molded into various shapes for specific applications, such as vibration reduction and noise reduction in mechanical equipment, automobiles, aircraft, and engineering and construction.

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A low-density high-damping sound insulation coating comprising a polymer resin, a filler, and an additive that provides superior sound insulation performance while maintaining low density. The coating combines a polymer resin with a filler and an additive that enhances damping properties through nano-silica reinforcement. The additive is specifically formulated to maintain the coating's low density and hardness while preventing foam formation. The coating's unique combination of polymer, filler, and additive achieves high sound insulation while minimizing weight and maintaining structural integrity.

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Water-based damping coating for maglev trains and EMUs that achieves superior sound insulation while maintaining environmental sustainability. The coating combines a water-based emulsion with fluorocarbon emulsion, expanded graphite, and expanded vermiculite to create a damping system that effectively reduces external noise transmission. The formulation incorporates a film-forming additive, dispersant, defoaming agent, and leveling agent to ensure uniform coating application. The coating's unique combination of properties makes it an essential component in high-speed rail applications where noise reduction is critical.

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A sound insulation coating comprising a two-component composition that provides improved noise reduction between floors. The coating consists of a primer, a rubber particle mixture, a glass bead mixture, an oxidant, a reducing agent, an emulsifier, ammonia, and preservative. The coating contains composite rubber particles that absorb and dissipate sound energy through reflection and absorption, while the glass beads fill gaps and enhance sound absorption.

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A system for detecting and preventing overvoltage conditions in electrical circuits. The system employs a voltage monitoring module that continuously monitors the voltage levels across the circuit. When the monitored voltage exceeds a predetermined threshold, the system initiates a shutdown sequence to protect the circuit components from damage. The shutdown sequence includes disconnecting power to the circuit and initiating a diagnostic routine to identify the cause of the overvoltage condition. The diagnostic routine provides detailed information on the fault condition, enabling maintenance personnel to quickly identify and address the issue.

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Preparing a water-based sound-insulation noise-reduction coating for the floor slab. The preparation method involves adding an ammonia water solution, a film-forming auxiliary agent, a water-soluble dispersing agent, the defoaming agent is an organic silicon defoaming agent, the leveling agent is an organic silicon leveling agent, and the wetting agent is an organic silicon wetting agent.

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A waterborne damping paint for vehicles that achieves high damping performance while maintaining wide temperature stability. The paint combines a waterborne acrylic emulsion with a modified hollow glass microsphere (HGMS) system. The HGMS comprises a glass microsphere grafted with a silane coupling agent, which enhances compatibility with the emulsion. The emulsion and HGMS blend in a 1:3 ratio, with the emulsion containing a 48-52% water content and a glass transition temperature of 5-20°C. The emulsion polymerizes to form a stable film, while the HGMS provides superior sound insulation properties. The paint formulation enables a wide operating temperature range (from 5°C to 120°C) and high damping peak values, making it suitable for automotive applications requiring advanced noise reduction capabilities.

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A water-based noise reduction coating for electric vehicles that specifically targets high-frequency noise reduction. The coating employs a proprietary emulsion formulation combining pure acrylic and styrene acrylic polymers with functional powders containing modified carbon fiber and mica. The coating's unique composition enables effective noise reduction in both low- and high-frequency regions, making it particularly suitable for electric vehicles with high-frequency noise issues.

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Water-based sound insulation coating comprising a water-based hyperbranched acrylic modified alkyd resin, water-based low-molecular-weight epoxy resin, water-based phenolic ammonia resin, and organic color paste. The coating combines these components in a specific ratio to achieve superior sound insulation properties, including reduced surface tension and improved wetting agent performance. The formulation enables effective sound absorption while maintaining adhesion and corrosion resistance.

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A waterborne noise-reducing coating for automobiles that achieves effective sound absorption and insulation through a novel nanostructured film. The coating combines rutile titanium dioxide with graphene aerogel, strength film former, and polypropylene fibers to create a multi-layered nanostructure. The film-forming agent is a blend of SWF-05 and WZ-624 special film-forming agents. The coating formulation includes a water-based emulsion, rutile titanium dioxide, strength film former, graphene aerogel, methyl acrylate, methyl methacrylate, divinylbenzene, acrylamide, isoprene, silica, dispersant, wetting agent, thickener, defoamer, and polypropylene fibers. The formulation is optimized for waterborne application and provides superior noise reduction performance compared to conventional coatings.

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Aerogel sound-absorbing, noise-reducing thermal insulation coating with enhanced sound absorption and noise reduction properties. The coating combines aerogel powder with a proprietary blend of acrylic emulsion, open-cell perlite, and other additives to create a high-performance insulation system. The aerogel emulsion serves as a matrix for the aerogel particles, while the perlite provides thermal insulation properties. The coating achieves superior sound absorption and noise reduction through its unique aerogel structure, which enhances sound wave transmission while suppressing sound reflections.

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Water-based damping material for automobiles that eliminates the need for toxic asphalt-based damping materials while maintaining high-performance sound insulation. The material comprises a water-based polymer matrix with integrated phase change material (PCM) that slowly vaporizes during baking, suppressing bubbling while maintaining structural integrity. This approach enables the material to achieve superior sound insulation performance while minimizing the environmental impact of traditional damping materials.

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Latex paint with enhanced sound insulation properties, particularly for curtain wall applications. The paint combines a composite emulsion with specialized additives to achieve superior sound absorption while maintaining aesthetic properties. The formulation includes a high-performance emulsion, a thickening agent, a reinforcing fiber, a foaming agent, a water-repellent agent, an antibacterial agent, a polymer powder, graphite powder, metal powder, nano-titanium dioxide particles, and kaolin. The paint's unique blend of these components enables effective sound absorption while maintaining the paint's visual appeal.

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Damping coating with an interpenetrating network structure and a preparation method, wherein the coating comprises a polyhydroxy polyurethane resin and different molecular weights of the same type of epoxy resin.

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A spray-type sound-absorbing and sound-insulating material for vehicles, ships, and other high-speed applications that provides effective noise reduction through a novel spray formulation. The material combines a water-based emulsion with sound-absorbing nano particles and a proprietary foaming agent to create a sprayable, compact, and environmentally friendly solution. The spray formulation enables rapid curing to form a durable, high-performance coating that can be applied to existing surfaces.

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A sound insulation coating that prevents sound propagation and controls noise transmission through a novel combination of inorganic and organic materials. The coating comprises a matrix of bentonite, cellulose, acrylic emulsion, silicone acrylic emulsion, mineral fiber, mica powder, microbead powder, talc, kaolin, and diatomaceous earth, with specific particle sizes for each component. The coating achieves superior sound insulation properties through its unique blend of inorganic and organic components, which work together to absorb and dissipate sound energy.

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Water-based damping coating for automotive interiors that combines improved performance with enhanced environmental sustainability. The coating utilizes a polymer resin matrix with strategically selected fillers and additives, which enables enhanced vibration damping, thermal insulation, and sealing properties. The coating can be applied directly to metal surfaces through a single-stage process, eliminating the need for multiple coats and multiple equipment. The formulation achieves superior performance while maintaining low VOC levels and environmental compatibility.

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Noise suppression absorbers for electronic devices that utilize a novel resin system with integrated absorptive filler. The absorptive filler is incorporated into the resin matrix during processing, enabling the creation of noise-reducing coatings that can be applied to surfaces through various methods. The system combines the benefits of traditional noise suppression materials with the advantages of a self-contained, sprayable coating.

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Epoxy-based sound-absorbing coatings for automotive seat parts that combine the benefits of traditional acoustic foam materials with advanced waterborne technology. The coatings employ a proprietary epoxy resin system, specifically designed to enhance sound absorption while maintaining performance in waterborne applications. The system integrates a high-performance epoxy resin with a silicone-modified epoxy auxiliary agent and a specialized sound-absorbing additive, resulting in a coating that delivers superior sound absorption performance compared to traditional acoustic foams.

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A water-based damping coating that combines enhanced anti-corrosion and damping properties with improved adhesion and environmental sustainability. The coating comprises a network cross-linked structure formed by a water-based resin and a prepolymer resin, with a mass fraction of each component being 15% water-based resin, 7% prepolymer resin, 2-10% titanium dioxide, 2-10% hollow glass beads, 0-10% zinc phosphate, 0-10% aluminum tripolyphosphate, and 0-10% composite silicate rock slices. The coating exhibits superior performance in both damping and corrosion resistance, with enhanced adhesion properties compared to conventional coatings, while minimizing volatile organic compounds (VOCs) and environmental impact.

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