What is the best material for heat shields? What are the materials of thermal insulation boards

Porous materials. It uses the pores contained in the material itself to insulate heat, because the thermal conductivity of air or inert gases in the voids is very low, such as foam materials, fiber materials, etc.; Heat-reflective materials have a high reflectivity and can reflect heat, such as gold, silver, nickel, aluminum foil or metallized polyester, polyester film, etc. Thermal insulation materials are mainly divided into three categories: porous materials, heat-reflective materials and vacuum materials.

New Thermal Insulation Sheet Material:Nano-airbag reflective layerAfter installation, when the sun is exposed to the sun in summer, the indoor temperature can be reduced by 30%-40% (for example, the temperature can be directly reduced by about 15 when the temperature is 50), and the higher the temperature, the greater the cooling.

Compared with traditional thermal insulation materials: sunscreen heat insulation, waterproof leakage blanket is odorless and non-toxic; It solves the problem of toxic odor volatilization of glass fiber and foam insulation materials in the past, which brings discomfort to the human body and the harm caused by the environment. The use of high reflection composite metal film, the inner layer of high temperature insulation insulation material, non-volatile, non-toxic, applied to the surface of the building, can block ultraviolet rays, reflected heat energy up to 97%, to achieve effective thermal insulation effect, the overall characteristics and strength of the product, can play a role in waterproof leakage repair on the surface of the building, high temperature insulation insulation insulation material layer material is soft and has good sound insulation ability.

Thermal insulation materials are divided into two categories: porous materials and heat-reflective materials. The former uses the pores contained in the material itself to insulate heat, because the thermal conductivity of air or inert gases in the voids is very low, such as foam materials, fiber materials, etc.; The latter material has a high reflectivity and can reflect heat, such as gold, silver, nickel, aluminum foil or metallized polyester, polyimide film, etc. The aerospace industry has strict requirements for the weight and volume of the thermal insulation materials used, and often requires it to have sound insulation, vibration damping, corrosion protection and other properties.

The need for thermal insulation varies from aircraft to aircraft. Foam plastics, ultra-fine glass wool, and high-silicon oxygen foam are commonly used in aircraft cockpits and cockpits to insulate heat. The thermal insulation material used for the head of the missile was phenolic foam in the early days, and with the application of polyurethane foam with good temperature resistance, a single thermal insulation material was developed into a sandwich structure.

The thermal insulation method of the missile instrument compartment is to coat a layer of foaming paint several millimeters thick on the outer skin of the cabin, which is used as an anti-corrosion coating at room temperature, and when the aerodynamic heating reaches more than 200 °C, it will be evenly foamed and play a role in heat insulation. The artificial earth satellite is moving in an alternating environment of high temperature and low temperature, and it is necessary to use multi-layer thermal insulation materials with high reflective properties, which are generally composed of dozens of layers of aluminized film, aluminized polyester film, and aluminized polyimide film. In addition, the development of surface insulation tiles has successfully solved the thermal insulation problem of the space shuttle, and also marks a higher level of the development of thermal insulation materials.

Thermal insulation board is now common in the market is asbestos board.

<> "First, the material of the thermal insulation board has some slippery and permeable sections.

1. Polyurethane rigid foam.

Polyurethane rigid foam is a new type of microcellular foam material with closed-cell structure, which has good thermal insulation performance, low thermal conductivity and water absorption, and is relatively convenient for construction and operation.

2. Polystyrene board reputation insulation layer.

The thermal insulation layer of polystyrene board is made of crushed polystyrene ethylene foam and cement, which has the effect of heat insulation and avoids the thermal expansion, cold contraction and cracking of the surface layer of fine stone concrete.

3. FS cement fly ash insulation roof.

This kind of material is poured and foamed with sulfoaluminate cement, foaming agent and other materials. Its environmental performance is very good, the comprehensive utilization is also good, the density is small, the thermal conductivity is low, and the thermal insulation performance is good.

4. FB new composite roof panel.

It is composed of insulation board, lightweight structural board and air layer, and has good thermal insulation effect and waterproof effect. And the texture is light, reducing weight and improving work efficiency.

Second, how to choose thermal insulation board materials.

1. It can be selected according to the temperature resistance of the thermal insulation board material. Common thermal insulation board materials are high temperature, medium temperature and low temperature. If used in an environment with a temperature of 100-150°C, high or medium temperature insulation board material.

If it is used in an environment of about 10-30 years, choose a low-temperature thermal insulation board material.

2. According to the selection of thermal insulation board materials, it is recommended to choose different materials of thermal insulation board materials for different regions. When purchasing thermal insulation board materials, it is necessary to consider whether the physical properties can be consistent with the environment in which they are used.

The traditional insulation board materials include glass fiber, asbestos, rock wool, silicate, etc., and the new insulation board has aerogel felt, vacuum board, etc. Thermal insulation materials are divided into three categories: porous materials, heat-reflective materials and true chain bypass materials. It is to use the pores contained in the material itself to insulate the heat.

Temperature has a direct impact on the thermal conductivity of various thermal insulation materials, and the thermal conductivity of materials increases when the temperature increases. As the temperature increases, the thermal movement of the solid molecules of the material increases, and at the same time, the thermal conductivity of the air in the pores of the material and the radiation between the pore walls also increase. However, this effect is not significant in the temperature range of 0-50, and the effect of temperature should only be considered for materials at high or negative temperatures.

The heat of summer makes many people's homes like stoves, and the heat in summer not only comes from the walls, but also the roof is also a way for heat to enter, so more and more people will decorate the house with thermal insulation layer treatment, and when it comes to thermal insulation treatment, it has to be mentionedThermal insulation panels。So what are the types of heat shields? Which is better?

Below we will give you a detailed introduction to the heat shield, I hope you can help after reading it.

Which is better?

Thermal insulation board type 1, asbestos board: asbestos board is the abbreviation of asbestos fiber cement plate, which is produced with asbestos, glass fiber, clay and other materials in accordance with scientific formulas. It has strong tension resistance, can withstand pressure, can withstand about 1400, and has the effect of heat insulation, thermal insulation and sound insulation.

The thermal insulation effect of asbestos board has a real feeling in many consumers, so the popularity of asbestos board is very high.

Type 2 of heat insulation board, fireproof board: fireproof heat insulation board, as the name suggests, can be insulated without entering, and can also be fireproof. And this is also one of the biggest advantages of fire insulation panels.

Roof insulation board, is the country's first patented product, made of perlite, mineralized raw materials, plant fibers and other natural materials, using scientific thermal reaction, after special processing technology to make. It has a series of advantages such as heat preservation, waterproof, fire prevention, and heat insulation.

Heat insulation board type 3, vacuum board: the so-called vacuum heat insulation board, that is, the latest environmental protection board in recent years, belongs to one of the vacuum insulation materials. It is a vacuum heat insulation board composed of a filling core material and a vacuum-protected surface.

Although you may not like the vacuum insulation board, you will still question what kind of heat insulation board there are, since the vacuum board is made in this world, there must be a reason for its existence. Although vacuum insulation panels are not as popular as other types of thermal insulation panels, the advantages of vacuum insulation panels should not be overlooked.

4. Extruded plastic board: Extruded plastic board is actually a new type of thermal insulation material with polystyrene resin as the main raw material, processed by special processing technology, and then continuously extruded into foam. When facing the types of heat shields, the first thing to do is to clarify the main advantages and characteristics of this type of heat shield, in order to help you solve the real problem.

The main characteristics of extruded plastic insulation board are sound insulation, flame retardant, environmental protection, stability, economy, high pressure resistance and so on.

Thermal insulation board type 5, foam board: foam insulation board, which includes two layers of foam insulation board inside and outside. Hard sheets inside and out.

Fit inside and out. When the foam insulation board is placed on the wall, the mortar cement smeared on the wall will be integrated into the inner groove of the insulation board, and the cement mortar will also be irritated to fit the wall and support the foam insulation board. It is like inputting a foam insulation board into a wall.

What are the types of heat shields that are brought to you? Which is better? All of it.