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High-speed rail insulation materials with sound absorption, thermal insulation and other multiple functions, mainly for engine insulation and the overall vehicle insulation. In winter, the insulation material can ensure the temperature inside the vehicle to be stable and prevent the heat loss of the air conditioner from dissipating outwards. In summer, the insulation material can isolate the effect of solar heat radiation and external heat to improve the air conditioning and cooling effect. Insulation materials can reduce high-speed rail in order to maintain the temperature stability of the car and the energy consumption, to help high-speed rail energy conservation. 

Application Status of High Speed ​​Railway Insulation Materials

1. High thermal conductivity, poor insulation, air conditioning equipment running higher energy consumption.

2.Compact body space, high requirements for insulation thickness, traditional materials difficult to meet the requirements.

3. The traditional insulation material has poor compressive and anti-seismic performance. During the long-term operation of the HSR, the material is in a vibrating state. The materials are subject to self-weight and vibration and easily deformed and settled. As a result, the heat insulation effect is reduced and the equipment burden on the air conditioner is increased.

4. Insulation properties easy to decay, natural pulverization greatly shortened its life expectancy, only 3 to 5 years, continue to use will result in a serious waste of energy.

Comparison of performance parameters

 

Aerogel insulation blanket

Rock wool

Aluminum silicate fiber blanket

Thermal Conductivity,W/(m•K)
(25℃)

0.018≤

0.035

0.038

density,kg/m3

180

100~120

120~170

Hydrophobic rate

≥ 99%

不防水

Service life,years

≥ 20

3~5

Compressive strength

deformation10%

50Kpa

Large compression deformation

deformation25%

100Kpa

Moisture absorption rate(vol%)

0.32

5

Seismic performance

Excellent, no change in performance over long term use

After a certain period of time after the shock will appear under the ball fell, cotton elongated elongated, and even fragmentation

 

 Aerogel Insulation blanket's main advantage:

1. The special structure of airgel and its waterproof and compressive properties make it can last more than 20 years, which is much higher than that of traditional materials.

2. Ultra-low thermal conductivity, the best thermal insulation effect, is the world's lowest thermal conductivity of solid materials, greatly reducing air conditioning and other equipment, energy consumption and improve train comfort.

3. Ultra-low insulation thickness, in line with the vehicle for the insulation material of the strict requirements.

4. Special process to make it with the overall waterproof performance, hydrophobic rate ≥ 99%, isolated liquid water, while allowing water vapor through, reducing the possibility of mold growth and improve the quality of the environment inside the car.

5. Excellent fire performance, rail vehicle materials fire test to achieve S4 level (DIN 5510), to provide the perfect vehicle fire protection, to ensure the safety of the train.

6. The special nano-dimensional three-dimensional network structure gives the airgel a good compression, shock and seismic performance, can withstand savage construction, thermal insulation performance is stable and lasting, the perfect adaptation to the continuous vibration of the vehicle running status.

7. The vehicle insulation at the same time, you can also play a sound-absorbing noise reduction, shock absorption and other functions to ensure the car environment, protection of equipment.

8. Does not contain harmful substances, green.

9. Soft and light, easy to cut, easy to install, cost savings.

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