Application of glass fiber reinforced nylon in the field of high-speed rail

Glass fiber reinforced nylon has high strength, light weight, abrasion resistance, corrosion resistance, and easy molding. The glass fiber content is more than 30%. After toughening, weather resistance, insulation and other modifications, it faces new opportunities in the rapid development of the world's high-speed rail.

The operating speed of high-speed railways generally reaches 250 kilometers per hour, requiring high rigidity, high stability and suitable elasticity, performance reliability and convenience of maintenance of the track, which puts forward higher and higher requirements for the use of new materials. The application of glass fiber reinforced nylon in the future high-speed rail is mainly reflected in two aspects: one is the application of track parts; the other is the lightweight application of carriages.

The application of glass fiber reinforced nylon in high-speed rail track components mainly includes insulating rail block, insulating sleeve, gauge baffle, switch rail support seat, etc.

The high-speed rail is fully accelerated. Under the repeated action of high-speed dynamic loads, the track must have sufficient strength and maintain sufficient elasticity. The elasticity of the track is provided by the fastener system, and the key component of the insulating gauge block is reinforced by 30% fiber. Made of nylon 6 material, it ensures the comfort and safety of the carriage.

At present, high-speed railways have designed new railway turnouts, using concrete turnout sleepers, and plastic insulating sleeves are prepared in the turnout sleepers. It is related to the use mission of the turnout and the safe driving of the locomotive. It requires high strength, insulation, toughness and other properties. Made of glass fiber reinforced and toughened nylon 6 material.

The speed of the high-speed rail will become faster and faster. The speed of the super high-speed rail currently under development in China has reached 1,000 km/h. The faster the speed, the research significance of its lightweight will become more prominent.

Glass fiber reinforced nylon has the following major directions in the lightweight application of high-speed rail:

1. Honeycomb interior parts replace steel plates to reduce vehicle weight.

2. The vehicle friction plate adopts self-lubricating glass fiber reinforced nylon 6 to replace the steel friction system, which not only saves materials and reduces weight, but also is durable.

3. The transmission system bearing cage is made of glass fiber reinforced nylon 6 material, which greatly extends the service life of locomotive bearings.

4. High-speed rail truck core liner, which is a high-load bearing component of the vehicle. Under the conditions of longitudinal, lateral, torsion and dynamic acceleration of the vehicle running at high speed, the maximum pressure of the core liner can reach 11MP, and glass fiber reinforced nylon 6 is fully capable. , And can lose weight.

Hebei Yuniu Fiberglass Manufacturing Company Limited is a fiberglass material manufacturer with over 10-year experience, 7- year exporting experience.

We are manufacturer of fiberglass raw materials, Such asfiberglass roving, fiberglass yarn, fiberglass chopped strand mat, fiberglass chopped strands, fiberglass black mat, fiberglass woven roving, fiberglass fabric, fiberglass cloth..And so on.

If any needs, please contact us freely.

We will do our best to help and support you.