With the development of rail transportation industry, people have higher and higher requirements on high-speed train, energy saving, comfort, safety and light quality, all of which cannot be developed without excellent materials.

In recent years, multi-functional polymer composites have been applied more and more widely in the rail transit industry.

High speed, energy saving, comfortable, safety, etc. are some of the many requirements nowadays expected for rail transports. To fulfill all these requirements, better high-performance polymer composites are needed. In fact, these materials are being applied in the industry frequently now.

From the interior of the carriage to the glass of the train, from the ceiling of the train to the smokeless floor, from the chassis, bogies to the ballast bed, sleepers, electric communication, the application of new polymer materials everywhere.

Driven by the strong market demand, material suppliers have increased investment in the research and development of high-performance rail vehicle materials.

Polymer board train interior is more beautiful and comfortable

With the development and maturity of high-speed railway technology, railway transportation mode becomes faster and more comfortable, and the interior material of train no longer meets the single requirement of safety simply.

With the development and popularization of polymer material, train interior decoration material has a qualitative leap in appearance and performance.

Dupont introduced aviation high-performance materials into the train interior.

Nomex honeycomb panel is strong, rigid, lightweight, durable, meets the strictest standards for fire, smoke and poison protection, is corrosion resistant, and has good insulation and sound insulation. This material is used in 25% of the exterior materials and 95% of the interior of Boeing and airbus. It has been successfully used on trains for more than 20 years.

Nomex honeycomb panel is made of Nomex honeycomb core plus surface panel.

Unique materials and sandwich construction make Nomex honeycomb panels better insulated and soundproof than other metal and fiberglass materials, thus reducing energy consumption and providing comfortable travel environment for passengers.

Nomex honeycomb panels can be as low as 0.048g/cm3(48kg/m3) while meeting the various strength and rigidity required by train interior design.

An 8mm thick honeycomb panel weighs only 1.6 kilograms per square meter.

If the Nomex honeycomb plate is used instead of fiberglass as the interior, the weight of each carriage can be reduced by 800-1000 kg.

If the aluminum honeycomb board is replaced, the weight can be reduced by at least half, which can greatly reduce the weight of the train and the energy consumption of the train operation.

So far, Nomex cellular board has been applied to more than 5,000 passenger trains worldwide, including high-speed trains, double-decker trains, subways, light rail and intercity rail trains.

The Nomex honeycomb board is widely used by internationally renowned bus manufacturers such as Alstom, Fiat, Breda, Rotem and China changchun bus manufacturer as the interior parts of the train's ceiling, window frames, luggage racks, partitions, floors and cabinets.

In 2010, at the international rail transit technology exhibition in Berlin, Germany, bayer materials technology co., ltd. presented innovative solutions to the plate made from polycarbonate model cloning and PC+ABS (acrylonitrile-butadiene-styrene copolymer) by benlan.

The product is safe and durable, with high fire resistance, strong noise protection and effective resistance to intense mechanical impact.

Excellent fracture and fracture resistance and high impact resistance even at freezing temperatures.

Bibenlan plate can be produced by hot pressing, which is easy to be shaped. It not only meets the safety requirements, but also the transparent polycarbonate has excellent optical quality, which can be used for glass assembly and meets the requirements of the appearance of the interior materials. It is an ideal train interior materials.

The product is used in the Dutch train and has been put on the market in Germany.

High-performance low-smoke flame retardant cable materials can meet the strict requirements of fire safety in subway system.

Fire retardant composite train safety guards

The rail transit industry has strict requirements for the infrastructure (tunnels) and the cables used in all vehicles to prevent fire smoke and gas from harming the safety of passengers.

The London rail transit system, the world's oldest subway system, has no exit at a considerable length of tunnel. This design makes it a major fire safety hazard, so its standards for low smoke and low toxicity are also among the strictest in the world.

In response to this demand, the company developed two new cable materials, ECCOH 5803 and ECCOH 5806, which, for the first time in the market, can meet the strict requirements of low smoke and low toxicity as well as excellent oil resistance. At 100 degrees Celsius, the material can withstand IRM 903 standard oil for up to seven days.

In addition, halogen free, no acid gas release in fire, wide operating temperature range and strong UV resistance are the advantages of these products.

The cable made of lanxess Levapren (eevm), a vinyl acetate copolymer, produces little toxic gas and has a very low smoke density.

In the case of cables, the halogenated cable sheath is not suitable as it releases poisonous gas during combustion. As a kind of halogen-free synthetic rubber, it has excellent properties of oil resistance, ozone resistance, uv resistance and weather resistance.

In addition, this low-viscosity EVM rubber is also easy to be mixed with a large amount of flame retardant filler, such as aluminum hydroxide.

In addition, the rubber floor made by Levapren is often used in places with large human traffic, such as railway stations and subways.

It meets high fire standards, such as Germany's DIN 4102 fire standard B1 level.

When properly synthesized, Levapren will not release highly corrosive hydrogen halogens (such as hydrofluoric acid) that can cause significant damage when a fire occurs, nor will it produce black smoke that reduces visibility, helping to increase visibility on escape routes during a fire.

At the same time, adopt the rubber floor of Levapren, resist ozone, endure weather, not fade easily, and have good wear-resisting and anti-loss performance.

Reduce vibration and noise to create a comfortable traffic environment

With the high-speed development of rail transit, the vibration and noise caused by train operation is more intense, which not only causes discomfort to passengers, but also seriously interferes with the normal life and work of residents along the line.

The application of vibration and noise reduction materials can not only reduce the fatigue and wear of vehicles, rails and electrical equipment, but also reduce the impact of vibration and noise on residents and buildings along the road.

China's first high-speed train with a speed of 350 km/h, the beijing-tianjin inter-city passenger line, carries about 60-80 trains a day between Beijing and tianjin.

Despite the constant movement of trains every day, there was no noise that would upset nearby residents, thanks to the wingentek sound insulation, which allows high-speed rail builders to put an end to the noise by building a transparent barrier on either side of the tracks.

Poktronic sound insulation series is a new product developed on the basis of its classic poktronic product for sound insulation and windshield efficiency.

This product is transparent, with good landscape effect, aging resistance, non-discoloration, impact resistance, and excellent sound insulation.

When it is used as a large area of sound-proof wall, it can reflect sound and greatly reduce noise transmission.

The good wear resistance and excellent strength, even under the violent impact, will not produce debris, effectively prevent the accident when the collision caused by the debris flying around injuries;

At the same time it anti-aging, anti-ultraviolet light and easy to clean characteristics, can reduce the cost of sound insulation board maintenance, and increase the use of life.

What's more, this kind of noise control material with excellent performance can be 100% recycled and reused.

If protected by a windshield made of ordinary mineral glass, it weighs twice as much as a boxer solution and requires a completely different engineering structure.

The sound insulation is also used on a highway from guangzhou to shenzhen in southern China.

Bayer USES Durflex polyurethane micro-foam elastomer to make polyurethane ballast bed, which can greatly improve the transverse supporting performance of the ballast bed, reduce vibration, reduce noise and improve ride comfort.

Transparent sound screens are a threat to birds that cannot identify such obstacles and need to be protected from them, according to research.

By printing 2mm wide black stripes on the overall surface of the material, win chuang can protect birds with a protective film.

Because these streaks are embedded within the material, it is difficult to remove them with either a cleaning agent or a doodling agent.

The streaks can be visually recognized by birds, while also ensuring maximum transparency.

In recent years, vibration and noise reduction composite materials and products emerge in endlessly, and their applications are more and more extensive.

For example, bayer USES Durflex polyurethane micro-foam elastomer to make polyurethane ballast space, and forms polyurethane solidified integral ballast bed.

This product is especially suitable for special sections, such as Bridges, tunnels, heavy duty sections, desert sections, access and exit stations, ballastless and ballastless transition sections, as well as sections with low vibration and noise requirements, which can significantly improve the transverse support performance of ballast beds, reduce vibration, reduce noise and improve ride comfort.

In addition to the above properties, such as fire prevention, vibration and noise reduction, appearance, etc., the polymer composite used in trains also has other excellent properties, such as sustainability, dustproof cleaning, weight reduction, etc.

With the continuous development of high-speed railway technology in the world, the commercial operation speed of high-speed trains has been improved rapidly.

The economy of travel time, the improvement of travel conditions and the reduction of travel costs, coupled with the international community's increasing awareness of the earth's environmental protection on which people depend, make high-speed railways show a strong momentum of development worldwide.

The application of high performance polymer composites in the rail transit industry will be more and more.

With the development of rail transportation industry, people have increasingly higher requirements on high-speed train, energy saving, comfort, safety and light quality, all of which cannot be developed without excellent materials.

In recent years, multi-functional polymer composites have been applied more and more widely in the rail transit industry.