Melamine foam is a new type of sound-absorbing, heat-insulating, heat-preserving and fire-resistant nanomaterials. In addition to excellent sound absorption and heat insulation, compared with similar products such as glass wool and polyurethane foam, its advantages are also high flame retardancy, hygiene and safety. Melamine foam has no residual free formaldehyde and has stable chemical properties, which can meet food-grade hygiene requirements (the raw materials can be used to make tableware). And without adding any flame retardant, the flame retardant performance can reach the B1 level specified by German DIN 4102 and the American UL94-V0 level standard. It is a general foam plastic, such as polyolefin, polystyrene, polyurethane, etc. incomparable. When the melamine foam meets an open flame, the surface layer burns slightly and forms coking, which will extinguish itself away from the fire. When the surface layer is slightly burned, nitrogen and carbon dioxide are released, which has fire extinguishing properties, does not produce toxic smoke, and does not drip, thus greatly reducing the incidence of fire accidents.

At present, the application of melamine foam is very wide. The main fields cover from high-tech fields such as aviation, aerospace, military, electronics, to vehicles, trains, ships and other vehicles, from terminals, theaters, educational venues, recording studios, and cities. Expressway and high-noise working environment to ordinary household decoration, household appliances, daily cleaning products and other civil fields. It is a new type of material with great development prospects in the 21st century.

Application of melamine foam in rail transit

In terms of rail vehicles, the excellent acoustic properties and fire safety characteristics of melamine foam are destined to play a role in the support of vehicle walls and roofs and the decorative interior filling of the laminate. In the application examples of side walls and ceilings, the low thermal conductivity of melamine foam shows high-efficiency heat insulation performance. For example, the operating costs of air-conditioned passenger cars can therefore be greatly reduced. Because Sihang nano-melamine foam is lighter in weight than other heat insulation materials, it also plays a great role in improving energy efficiency in the transportation service industry. In addition, the reduction in the weight of the vehicle wall and roof position lowers the center of gravity of the vehicle, thereby increasing the safety of the vehicle when passing a curve. This is especially important for narrow-gauge rail roads. The melamine foam independently developed and produced by Xiamen Sihang can be compounded with materials such as raised cloth and PU board. Used in high-speed rail, light rail, subway and other rail transit industries. Melamine foam can be used in equipment compartments, air ducts, doors, inner walls of compartments, roofs, seats, side wall insulation, floors, and engine surroundings. The characteristics of light weight and low weight reduce the weight of the whole vehicle, improve the safety of cornering, and reduce energy consumption. At present, CSR and CNR Group has adopted melamine foam as sound insulation and heat insulation materials. Melamine foam has excellent sound insulation and heat insulation effect, and its B1 flame retardant characteristics can meet the flame retardant standards of auto parts without flame retardants.

Application of melamine foam in industrial insulation

People have higher and higher requirements for the flame retardancy of thermal insulation materials, so that traditional thermal insulation materials have to add flame retardants that are harmful to humans and are not durable. However, glass wool and rock wool with flame retardancy will produce a lot of fines during installation and use, causing discomfort to the human body. Xiamen Sihang melamine foam has high temperature resistance, flame retardant (B1 flame retardant) and easy processing characteristics, making it more than any traditional thermal insulation material in terms of insulation, such as glass wool, rock wool, polystyrene, polyurethane foam, etc. . Through mechanical cutting of the shape, it can be processed into heat-insulating material for pipeline protection. While providing thermal insulation, energy loss is controlled, maintenance is simplified, and noise levels are reduced. Its ability to withstand high temperatures (long-term working temperature is about 150°C, short-term peak temperature can reach 240°C); low-temperature ability (long-term working temperature is about -150°C, short-term peak temperature can reach -200°C ) And flame retardancy, so that it can be competent for more technically demanding jobs. Further applications include the insulation of hot water tanks and their equipment.

Application of melamine foam in the field of industrial noise reduction

High-decibel noise in industrial and manufacturing environments not only reduces production efficiency, but also threatens the health of workers. Studies have shown that exposure to high-noise environments can lead to stress and fatigue, which may cause workplace injuries or hearing loss. Working environments polluted by high-intensity noise (such as noise from heavy construction machinery and metal processing plants and other disturbing sounds) can be reduced to acceptable levels by using Xiamen Sihang melamine foam sound-absorbing panels. Sihang nano-melamine foam wall panels and refraction plates can reduce and control noise and reverberation in factories, assembly plants and other industrial occasions by blocking and filtering sound waves. After cutting, the melamine foam board can be directly used on the ceiling and wall of the factory building to achieve sound absorption. After special-shaped cutting, it can be processed into a pipe insulation layer, which has excellent noise reduction and heat preservation effects on hot water tanks, air-conditioning ventilation pipes, gas pipes, and hot air pipes.

Application of melamine foam in aerospace and navigation

Acoustic components made of melamine foam covered with aluminum foil or waterproof non-woven fabric are used in the noise treatment of naval engine compartments. Passenger aircraft supporting manufacturers have used melamine foam to fill aviation seats. In addition to its excellent sound absorption and flame-retardant properties, aviation seats containing melamine foam are much lighter than traditional seats. Reduce weight and save fuel costs. This brings economic and environmental benefits to airlines. The low density and high sound absorption of melamine foam make it very useful in the aviation field. The acoustic components covered with aluminum foil made by Xiamen Sihang melamine foam are used in the payload area of the rocket launcher. Such a setting can reduce the acoustic pressure, which can well protect highly sensitive instruments and equipment in transportation, such as artificial satellites. Acoustic components made of melamine foam covered with aluminum foil or waterproof non-woven fabric are used in the noise treatment of naval engine compartments. As a low-density insulation and noise reduction material, melamine foam has been widely used in aviation seats, interior filling of cabin cavities, passenger ship cabins, warship engine rooms, cryogenic liquefied gas ships and artificial satellites.

Application of melamine foam in the field of architectural acoustics

Melamine foam's high-efficiency sound-absorbing ability and fire-retardant properties (in line with GB/T8624-2006 B1 flame retardant standard, and no need to add flame retardant media) make it widely used in the construction field. Acoustic and noise control products made of melamine foam can provide effective sound solutions in recording studios, anechoic rooms, offices, classrooms, restaurants, theaters, stadiums, and industrial assembly lines. The suspended sound-absorbing panel system made of melamine foam is used in public buildings such as shooting ranges, stadiums and ice rinks to reduce noise. Its high sound absorption capacity, lighter weight, higher fire safety performance and simple cable structure construction technology are fully reflected in these applications. Decorative acoustic panels, suspended sound absorbers, and metal ceiling panels supported by melamine foam have a significant improvement effect on the acoustic effect. The application of Xiamen Sihang melamine foam in restaurant ceilings, corridor sound-absorbing ceilings, indoor soft-packed walls, office partitions, light-weight mezzanine partition walls, and shutter rollers can not only insulate heat but also reduce noise. Melamine foam has sound absorption, flame retardancy and high temperature resistance. Its unique open-hole three-dimensional structure can effectively block sound waves. It is easy to cut and can be compounded with aluminum foil or plastic film. Used in ceilings, upholstered furniture, walls, partitions, mezzanine, pipe walls, etc. Due to sound insulation, high temperature resistance (high temperature resistance peak up to 240 ℃), and easy cutting, it can be processed into flame retardant cotton, sound absorbing cotton, space sound absorber, high temperature resistant cotton, and flame retardant soft bag. It is widely used in meeting rooms, halls, studios, restaurants, gymnasiums, swimming pools, art centers, theaters, etc.

Application of melamine foam in automobile manufacturing

In addition to the excellent acoustic properties of melamine foam, its products have high heat insulation, high fire safety, high atomization performance, high chemical resistance and light weight characteristics that make it useful in the automotive industry. Melamine foam can be compounded with PVC film, felt, non-woven fabric, PU board and other materials, and made of felt, fiber, metal sheet, and plastic film. It can be used in equipment cabins, wind Roads, doors, inner walls of cars, roofs, seats, side wall insulation, floor and engine surrounding sound insulation, insulation components and mufflers. The laminated sound-absorbing device is very suitable for the installation of the cover and transmission pipe on the underside of the car hood and in front of the car body end wall. Because the parts with melamine foam as the core can output relatively higher bending strength than other sound-absorbing materials, and reduce the wear of the connecting parts. Due to its composite properties, Xiamen Sihang melamine foam is also used for noise reduction in the engine room. For example, the heat insulation muffler board made of melamine foam and aluminum foil, and the inlaid interior parts made of melamine foam have The acoustic characteristics can reduce the noise level in the cab. Because of its elasticity, light weight and acoustic properties, melamine foam is also used as a filler in the automotive industry. The light weight of the melamine foam produced by Xiamen Sihang reduces the weight of the vehicle, improves the safety of cornering, and reduces energy consumption.

Application of melamine foam in the field of equipment air conditioning

Excellent sound absorption and fire resistance are the important advantages of Xiamen Sihang melamine foam, which can be used in the noise reduction of the ventilation circulation system of air conditioning equipment. The inner wall of the fan cover can also be installed with Xiamen Sihang melamine foam to reduce the noise level. Its low thermal conductivity and high temperature resistance can play an important role.

Application of melamine foam in soilless cultivation

1g of ordinary polyurethane foam can only absorb 30g of water and has a short water retention time; while 1g of melamine foam can absorb 300g of water, which is 10 times the water absorption capacity of polyurethane foam, and has a long water retention time. Due to the outstanding water absorption and water retention properties of melamine foam, it has a good application prospect in the field of planting substrates. As the base, it has strong water content (no loss of nutrient solution), anti-aging, stable performance, and can be immersed in the nutrient solution for a long time without deforming or aging. It is widely used in greenhouse planting, modern agriculture, artificial breeding, vegetable planting base, cultivation of green vegetables and other fields.

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