Views: 0 Author: Site Editor Publish Time: 2026-09-02 Origin: Site
Application scenarios of melamine sponge
Melamine sponge, with its unique three-dimensional open-pore structure and six core properties of sound absorption, heat insulation, flame retardant, light weight, temperature resistance and environmental protection, is playing a key role in more and more industries. From magnificent stadiums to sophisticated electronic equipment, from speeding high-speed trains to underground industrial pipelines, melamine sponge has penetrated into every aspect of modern industry and daily life with its diverse application forms.
This article will systematically sort out the typical application scenarios of melamine sponge in various fields, show how this hexagonal material can exert value in different industries, and provide a reference for customers in various fields in material selection and application.
Building Acoustics is one of the most classic and mature application fields of melamine sponge. As people"s requirements for indoor acoustic environment quality continue to increase, and the country continues to increase standards for green buildings and healthy buildings, melamine sponge is becoming a material for public design.
Professional acoustic spaces such as concert halls, theaters, recording studios, and cinemas have extremely stringent requirements for acoustic indicators such as reverberation time, frequency response, and speech intelligibility. Melamine sponge has become the core material for acoustic treatment in these spaces due to its wide-band and high-absorption acoustic properties.
In concert halls, melamine sponge is usually processed into wedge-shaped or pyramid-shaped sound absorbers and installed on walls and ceilings. This special shape can not only increase the effective sound absorption area, but also effectively diffuse reflected sound, making the sound field more uniform. By precisely controlling the number, layout, and thickness of sound absorbers, acoustic designers can adjust the reverberation time to an optimal value—without making the sound muddy due to too long reverberation, or drying out the sound field due to excessive sound absorption.
In recording studios and studios, melamine foam is used to control room standing waves and flutter echoes, creating a pure acoustic environment. Its dust-free and fiber-free characteristics are particularly important for recording environments that require extremely high cleanliness - if fiber dust floats in the air, it will not only affect the life of the equipment, but may also enter the recording equipment and affect the sound quality.
Long-span public buildings such as gymnasiums, convention and exhibition centers, airport terminals, and high-speed rail stations have huge spatial volumes, complex sound sources, and long reverberation times, which are difficult points in acoustic design. Traditional materials such as glass wool and rock wool are often inefficient in these tall spaces and difficult to install and maintain.
Melamine sponge is made into a space sound absorber and suspended below the building"s ceiling. This cloud-like sound absorber design can significantly increase the sound absorption area and effectively shorten the reverberation time without affecting the building height and visual effects. At the same time, the lightweight properties of melamine sponge greatly reduce the load of the suspended ceiling structure. For large-span buildings, structural safety and economy are more guaranteed.
In office buildings, schools, hospitals and other places, melamine sponge is used for sound-absorbing treatment on walls and ceilings, effectively reducing noise from people and equipment, and improving space comfort. Its fire protection performance meets the B1 level standard and fully complies with the domestic fire acceptance regulations for public buildings, allowing users to enjoy a good acoustic environment without worrying about fire safety hazards.
With the rapid development of urban transportation, road noise has become an important factor affecting residents" quality of life. Traditional sound barriers mostly use metal plates, acrylic plates or concrete structures. Although they can block some sounds, their effects are limited and they are visually stiff.
As a sound barrier core material, melamine sponge has excellent mid- and high-frequency sound absorption properties and can effectively absorb tire friction and engine roar in traffic noise. Combined with a metal or cement shell, it forms an absorption + isolation combined sound barrier, with a noise reduction effect of up to 20-35dB. At the same time, melamine sponge has good weather resistance, anti-aging, does not absorb water, and has an outdoor service life of more than 15 years. It is an ideal choice for the core material of road sound barriers.
In the industrial field, energy saving, consumption reduction and safe production are eternal themes. Melamine sponge has become the preferred solution for thermal insulation and noise reduction of industrial pipelines and equipment due to its high temperature resistance, good heat insulation, light weight, and convenient construction.
Thermal pipelines and process pipelines often have two problems at the same time: first, large heat loss and high energy consumption; second, flow noise and vibration noise generated by pipeline fluids are transmitted through the pipelines, affecting the workshop environment.
The traditional solution is usually to set up the thermal insulation layer and the sound insulation layer separately, which requires a variety of materials and multi-layer construction. Not only is the cost high and the construction period long, but there may be gaps between layers, which affects the effect. Melamine sponge combines heat insulation and sound absorption. One layer of material can solve the two problems of insulation and noise reduction at the same time.
Melamine sponge can be processed into pipe shells or rolls and wrapped directly on the pipe surface. For small-diameter pipes, prefabricated pipe shells are used, which are easy to install and fit tightly; for large-diameter or special-shaped pipes, they are wound on-site using coiled materials for flexible adaptation. The composite aluminum foil surface layer can further enhance the heat reflection and insulation effect and protect the sponge from water vapor and dust erosion.
Since the material does not shed slag or fiber dust, construction workers can operate with bare hands without wearing masks, gloves and other special protective equipment, greatly improving construction efficiency.
Injection molding machines, die-casting machines, forging furnaces, heat treatment furnaces, generator sets, compressors, fans... Heavy equipment in factories generally have high surface temperatures and loud operating noise. High temperature not only causes a large amount of heat energy waste, but may also pose a risk of burns to operators; high-intensity noise harms workers" hearing health and can easily lead to occupational disease disputes.
Melamine sponge sheets can be directly laid on the inner wall of the equipment casing to form a dual barrier of heat insulation and sound absorption:
——Thermal insulation level: effectively blocks the heat inside the equipment from radiating outward, lowers the ambient temperature of the workshop, reduces air conditioning energy consumption, and protects operators from high temperature burns;
——Sound absorption level: Absorb mechanical noise and air flow noise generated by equipment operation, reduce the overall noise level in the workshop, and improve the working environment.
Compared with traditional insulation materials such as asbestos and glass wool, melamine sponge does not produce dust pollution and will not fail due to moisture. It has stable performance and low maintenance cost for long-term use.
Industrial control cabinets, electrical cabinets, frequency converter cabinets, heat exchange equipment and other closed spaces have limited internal space and dense electronic components, which have high requirements for temperature control, noise control and fire safety.
Melamine foam can be processed into precisely sized lining pieces and attached to the interior of the cabinet. The ultra-thin thickness takes up almost no internal space, but can achieve triple protection at the same time: heat insulation - blocking the temperature fluctuations of the external environment and keeping the temperature inside the cabinet stable; sound absorption - absorbing the noise generated by the operation of fans and components, reducing the noise impact of the equipment on the outside world; flame retardant - B1 level flame retardant performance, in the event of a circuit failure and fire, it can effectively prevent the spread of the fire and buy time for power outage and fire extinguishing.
Today, with the rapid development of new energy and energy storage, the application of melamine sponge in energy storage power stations, data centers and other scenarios is also growing rapidly, becoming an important material to ensure the safe and stable operation of key equipment.
Transportation vehicles have extremely demanding requirements on materials—they must be light, safe, and comfortable. Melamine sponge happens to meet the three core requirements of lightweight, high fire resistance, and low noise at the same time, so it has been widely used in automobiles, Rail Transit, ships, aviation and other fields.
The NVH (noise, vibration and harshness) performance of the automotive industry is directly related to the driving experience and product quality. At the same time, the popularity of new energy vehicles has brought new challenges - battery thermal management and high-frequency motor noise.
The applications of melamine sponge in automobiles mainly include: filling the roof/ceiling to effectively absorb road noise and wind noise while reducing the weight of the ceiling; filling cavity parts such as door panels, pillars, and trunks to weaken the transmission of external noise into the car; hood/front compartment heat insulation The sound-absorbing mat blocks the transmission of high temperature and noise from the engine compartment to the cab, and protects surrounding plastic parts and wiring harnesses; the battery pack protection is combined with aerogel composite modification to form an ultra-thin thermal insulation layer, which is used for thermal protection of the power battery and delays the spread of heat when the battery core is thermally out of control.
Melamine sponge products that comply with IATF 16949 automotive industry quality system standards are low VOC, low odor, and friendly to interior air quality. They are the preferred supporting materials for OEMs and first-tier suppliers.
High-speed rail, subway, light rail, tram and other Rail Transit tools have the highest fire safety requirements in the industry. Rail TransitMaterials used in the industry must pass strict fire tests such as EN 45545, including multiple dimensions such as flammability, smoke density, and smoke toxicity.
The inherent flame retardant properties and low smoke and non-toxic performance of melamine sponge perfectly meet the fire protection requirements of the Rail Transit industry. Its application in Rail Transit covers: filling the ceiling, side walls, and end walls of the cabin interior, taking into account sound insulation, noise reduction, and fire protection; customized special-shaped sound-absorbing components in the cab and passenger area to specifically absorb wheel-rail friction noise and air-conditioning system noise; HVAC system duct linings and silencers to reduce airflow noise in the ventilation system; equipment cabin electrical cabinets, traction converter linings, triple protection of heat insulation, sound absorption, and flame retardancy.
Lightweight is another important consideration Rail Transit. The density of melamine sponge is only 8-12 kg/m³, which is more than 50% lighter than traditional sound insulation materials, helping to reduce the weight of the vehicle, improve transportation efficiency, and reduce energy consumption.
Ships and offshore platforms have been in a marine environment with high humidity and high salt spray for a long time, which places extremely high requirements on the weather resistance, corrosion resistance and fire resistance of materials.
Melamine sponge has good chemical stability, is acid and alkali resistant, salt spray resistant, does not absorb water, and is suitable for use in marine environments. Its applications in ships include: cabin sound insulation and heat insulation, engine room noise reduction, Pipe Insulation, cabin decoration, etc. Its fire resistance meets the relevant standards of IMO (International Maritime Organization), and its low-smoke and non-toxic properties are particularly important in closed cabins - in the event of a fire, the escape time of crew and passengers is crucial.
In industries such as home appliances, electronics, and energy storage, products are developing in the direction of becoming lighter, thinner, smarter, and safer. Internal space is becoming more and more compact, and the performance requirements for materials are getting higher and higher. Melamine sponge has found more and more applications in these fields due to its ultra-thin shape and multiple properties.
Air conditioners, range hoods, washing machines, dishwashers, refrigerators... There are more and more home appliances in modern families, and noise issues are becoming more and more of a concern to consumers. Noise level has become an important indicator of the quality of home appliances.
Typical applications of melamine sponge in home appliances include: the inner wall of the air conditioner casing and the lining of the air duct to absorb fan airflow noise and compressor operating noise; filling the cavity around the fan volute and body of the range hood to reduce the aerodynamic noise when the fan operates at high speed; lining the outside and door of the dishwasher and washing machine barrel to reduce the impact sound of water flow and motor noise during the washing process; the sound insulation and box insulation of the refrigerator compressor compartment to reduce operating noise and improve the insulation effect.
In addition to noise reduction, the thermal insulation and flame retardant properties of melamine sponge also provide additional protection for the safety of home appliances. The internal space of home appliances is small and the components are densely packed. Once a circuit failure occurs, flame retardant materials can effectively prevent the spread of fire and reduce safety risks.
With the popularization of mobile electronic devices and the development of fast charging technology, portable energy storage products (power banks, outdoor power supplies, etc.) are becoming more and more powerful and charging faster and faster. Along with this comes the issue of heat dissipation and safety - high-power fast charging will generate a lot of heat. If it cannot be effectively insulated, it may cause the temperature of the casing to be too high, affecting the user experience and even causing safety issues.
Airgel composite modified melamine sponge is an ideal insulation material for portable energy storage equipment: ultra-thin and light, with a thermal conductivity as low as 0.015 W/(m·K), a thin layer can achieve a good thermal insulation effect without occupying valuable internal space; it is flexible and processable and can be die-cut into any shape, perfectly fitting the gap between the battery and the casing; intrinsically flame retardant, even if the battery suffers from thermal runaway, it can effectively block flames and high temperatures, improving product safety level; buffering protection, the sponge itself is elastic and can provide a buffer when dropped to protect the internal battery cells.
According to the GB 4943.1-2022 standard, the surface temperature of non-metallic housings of electronic products must not exceed 48°C. Using airgel composite melamine sponge as the thermal insulation layer can effectively reduce the surface temperature of the shell and help the product pass 3C safety certification.
Precision testing instruments, medical equipment, industrial control equipment, communication base stations, etc. have high requirements for temperature stability and noise control in the working environment. External temperature fluctuations may affect the measurement accuracy of the instrument, and fan noise may affect the normal use of the equipment.
The applications of melamine sponge in precision equipment include: cavity filling, filling the inner wall of the equipment casing to isolate external environmental temperature interference and keeping the internal temperature stable; air duct sound absorption, used for cooling air duct lining, reducing fan and air flow noise without affecting ventilation and heat dissipation; flame retardant insulation, used as a protective layer around the circuit board to improve the electrical safety performance of the equipment.
The heating, ventilation and air conditioning system (HVAC) is the breathing system of modern buildings, but it is also one of the main sources of noise in buildings. Fan noise, air flow noise, pipe vibration noise... These noises are transmitted to various rooms through the air ducts, affecting indoor comfort.
The inner wall of the air duct of the central air conditioning system is usually a smooth metal surface. Sound reflects back and forth in the duct, which not only slows down the attenuation, but also easily generates standing waves and resonance. The traditional noise reduction measure is to install silencers in the air ducts, which takes up building space and increases wind resistance.
Melamine sponge air duct lining is a more efficient and compact solution: full-section sound absorption, the sponge is directly attached to the inner wall of the air duct, continuously absorbing noise throughout the entire length of the air duct, and the sound attenuation capacity is much higher than that of a single-point silencer; the resistance is small, the open-hole structure is breathable and has a certain roughness It will not significantly increase the wind resistance and has minimal impact on the air volume of the air conditioning system; it is thermal insulation and energy-saving, and it also plays the role of air duct insulation, reducing the loss of hot and cold energy in the air duct, and reducing the energy consumption of air conditioning operations; fire safety, B1 level flame retardant, in line with the fire protection requirements of ventilation and air conditioning systems.
For occasions with high requirements for cleanliness, the melamine sponge air duct lining can be covered with a breathable non-woven protective film on the surface, which does not affect the sound absorption effect, but also prevents fibers from falling off, ensuring air quality.
HVAC equipment such as fans, heat pumps, cooling towers, and heat exchange stations are usually concentrated in the computer room. The noise in the computer room is often as high as 80-95 decibels, making it the most noisy area in the building. If not handled properly, noise can travel outward through walls, pipes and vents, affecting the surrounding area.
The applications of melamine sponge in computer room noise reduction include: wall sound absorption - melamine sponge sound-absorbing panels are laid on the walls and ceiling of the computer room to reduce reverberation noise in the computer room; equipment soundproof covers - soundproof covers are made for high-noise equipment , the outer layer is sound-insulated with metal plates, and the inner layer is sound-absorbed with melamine sponge, which has a significant noise reduction effect; fan silencer - install a silencer at the fan inlet and outlet, and use melamine sponge as the sound-absorbing core material to effectively reduce aerodynamic noise.
Since melamine sponge has a temperature resistance of up to 240°C, it can be used stably even in high-temperature exhaust systems of heat pump units without deformation or performance degradation due to high temperatures.
In modern buildings, the noise generated by mechanical and electrical systems (heating, ventilation, water supply and drainage, electrical) is an important factor affecting the quality of the indoor environment. Elevator shafts, pipe shafts, pump rooms, heat exchange stations, etc. are all common noise sources.
Melamine sponge can be used as the core material of the comprehensive noise reduction solution and is used in: elevator shafts - attached to the inner wall of the shaft, absorbing the mechanical noise and airflow noise generated by the operation of the elevator, and reducing the impact on adjacent rooms; pipe wells - wrapping the pipes and filling the shaft space, weakening the transmission of fluid noise in the pipes; ceiling cavity - filling the cavity above the suspended ceiling, absorbing the noise from the equipment layer above.
Shanghai Junhua New Materials Co., Ltd. is a high-tech enterprise focusing on the research and development, production and sales of melamine sponge. It has full chain capabilities from raw materials to finished products:
• Technology accumulation: 23 independent research and development patents, 7 registered trademarks
• Quality assurance: UL certification, IATF 16949, ISO 9001/14001/45001, BSCI certification, accepted worldwide
• Production capacity guarantee: annual production capacity of 100,000 cubic meters, warehousing area of 20,000 square meters, multiple flat cutting/vertical cutting/die cutting equipment, stable delivery
• Customized processing: die cutting/compositing/special-shaped processing/hydrophobic treatment/airgel composite to meet diverse needs
• Industry applications: Aerospace, new energy vehicles, Rail Transit, industrial insulation, Building Acoustics
