Equips Thermal Control Materials For Optimal Temperature - Efficient Energy Storage And Thermal Management With A Sophisticated Phase Change Mechanism: Phase Change Materials For Military Aviation

Equips Thermal Control Materials For Optimal Temperature - Efficient Energy Storage And Thermal Management With A Sophisticated Phase Change Mechanism: Phase Change Materials For Military Aviation

Product introduction:

-- Basic information

1. Phase change material (PCM) for military aviation is a kind of advanced material specially applied in the field of military aviation, which has many unique and key characteristics and functions.
2. The phase transition temperature is usually set in a specific range, and near this temperature, the material exhibits a strong temperature regulation ability.
3. When the local temperature of aviation equipment rises to near the phase transition temperature, it can rapidly absorb a large amount of latent heat through phase transition, effectively reduce the temperature of the high temperature area of the equipment, and prevent key components such as aircraft engines from failing due to overheating, performance reduction or even damage.
4. When the temperature is reduced, the stored heat can be released to stabilize the operating temperature of the equipment and reduce the interference of temperature fluctuations on the precision operation of the equipment.

-- Material type
1. Organic phase change materials

• It has the advantages of wide range of phase transition temperature, good chemical stability and relatively low cost.
• However, the thermal conductivity of organic phase change materials is relatively low, and the thermal response rate may be slow.

2. Inorganic phase change materials

• Inorganic phase change materials have high thermal conductivity and high heat transfer efficiency, but some materials may be corrosive, and there may be a large volume change during the phase change process.

3. Composite phase change materials

• Organic and inorganic phase change materials are combined, or phase change materials are combined with other materials such as fibers, foams, etc.
• To give full play to the advantages of various materials, overcome the shortcomings of a single material, improve the performance and applicability of phase change materials.

Nature of the product:
-- Physical properties
1. Status change feature

• The phase change materials widely used in the field of military aviation are mostly solid-liquid phase change types.
• When the ambient temperature climbs to a specific phase transition temperature threshold, the material smoothly transitions from solid to liquid.
• And when the temperature drops, it can reversibly change from liquid to solid.
• It is worth emphasizing that in the whole phase transition process of solid-liquid conversion, the chemical composition and properties of the material itself remain constant and will not change.

2. Influence of density variation

• When the phase transition phenomenon occurs, the density of the material is not unchanged, but usually produces a certain amplitude of fluctuation.
• This dynamic change of density has a significant influence on the encapsulation of phase change materials and practical application scenarios.

-- Chemical properties
1. Chemical stability

• Military aviation phase change materials have excellent chemical stability. In the long cycle, no matter what kind of complex and harsh environmental conditions, it can effectively resist the invasion of various chemical reactions such as decomposition, oxidation and corrosion.
• The lasting stability of the material's own properties reduces the risk of potential damage to aviation equipment due to the chemical instability of the material.

2. Material compatibility

• In the application context of aviation equipment, phase change materials have good compatibility with other types of materials in the equipment. Whether it is working with metal components, or with plastic, rubber and other non-metallic materials contact with each other, reducing adverse interactions.

Product application case:

-- Aircraft landing gear thermal protection
1. Landing gear brake system cooling

• During the landing of the aircraft, the landing gear brake system will generate a lot of heat, if the heat can not be dissipated in time, it may lead to the deterioration of the brake system performance, and even brake failure and other dangerous situations.
• The phase change material is applied to the heat dissipation structure of the landing gear brake system. During the braking process, the phase change material absorbs the heat generated by the brake, reduces the temperature of the brake system, and ensures the reliability and safety of the brake system.
• At the same time, the heat storage function of phase change materials can also gradually release the absorbed heat in a period of time after the aircraft takes off, reducing the impact of heat on other parts of the aircraft.

2. Thermal protection of landing gear structure

• During high-speed flight and takeoff and landing, the landing gear will be affected by air friction and aerodynamic heating, which will increase the temperature of the landing gear structure.
• Adding phase change materials to the structural materials of the landing gear, or coating the surface of the landing gear containing phase change materials, can absorb heat in high temperature environment, reduce the temperature of the landing gear structure, reduce the thermal stress damage to the landing gear structure, and extend the service life of the landing gear.

-- Aircraft cabin environmental control
1. Cabin insulation and sound insulation

• The comfort of an aircraft cabin is crucial to the pilot and passenger experience.
• The application of phase change materials to the inner wall, ceiling and floor of the cabin can play a role in heat and sound insulation.
• In high temperature environments, phase change materials absorb heat and reduce the temperature inside the cabin. At low temperatures, phase change materials release heat and maintain the temperature inside the cabin.
• At the same time, the porous structure or multi-layer structure of the phase change material can also absorb the noise in the cabin and improve the quietness of the cabin.

2. Cabin air conditioning system assistance

• The aircraft's cabin air conditioning system consumes a lot of energy to maintain the temperature and humidity in the cabin.
• By combining phase change materials with cabin air conditioning system, the heat storage and heat release functions of phase change materials can be utilized to reduce the energy consumption of air conditioning system.
• For example, before the aircraft takes off, the phase change material is heated or cooled to the appropriate temperature, and during the flight, the phase change material automatically releases or absorbs heat according to the temperature change in the cockpit, and the auxiliary air conditioning system maintains the temperature stability in the cockpit.