Aerogel heat insulation sheet stands out for its efficient heat insulation performance. This material is mainly refined from silica aerogel, which plays an important role in many fields with its extremely low thermal conductivity and excellent thermal insulation characteristics. According to its material composition, structural morphology and unique functional characteristics, aerogel insulation sheets can be further divided into several categories to meet the application needs of different fields. Next, we will discuss these different types of aerogel insulation sheets and their application fields.

1、 According to different types of material composition
1.1 Silica (SiO ₂) aerogel insulation sheet
Characteristics: This type of insulation sheet is the most common type on the market, with a porosity of over 90%, resulting in a very low thermal conductivity ranging from 0.015 to 0.03 W/(m · K). At the same time, it also has excellent temperature resistance and can withstand a wide temperature range from -200 ℃ to 650 ℃.
Disadvantages: Although silica aerogel insulation sheet has many advantages, its brittleness is large, and its strength needs to be improved by means of fiber reinforcement.
Application: This type of insulation sheet has a wide range of applications in various fields, including pipeline insulation, building energy conservation, and insulation of industrial equipment.
1.2 Carbon based aerogel insulation sheet
Features: This insulation sheet is made of graphene, carbon nanotubes, or carbon fibers as the skeleton, exhibiting excellent conductivity and being able to withstand high temperatures, up to 2000 ℃. However, its thermal conductivity is slightly higher than that of silica aerogel insulation sheet.
Application: carbon based aerogel heat insulation sheet is widely used in high-temperature furnace lining, battery thermal management, electromagnetic shielding and other scenarios.
1.3 Organic polymer aerogel insulation sheet
Materials: This type of insulation sheet is mainly made of organic polymers such as polyimide (PI), polyurethane (PU), and cellulose.
Characteristics: They have excellent flexibility and can be easily bent, but it should be noted that their temperature resistance is relatively poor, generally unable to withstand high temperatures exceeding 300 ℃.
Application: Due to these advantages, organic polymer aerogel insulation sheets play an important role in many fields, such as thermal insulation of flexible electronic equipment, clothing insulation and low-temperature environment insulation.
1.4 Metal oxide aerogel insulation sheet
Material: These insulation sheets are mainly made of metal oxides such as aluminum oxide (Al ₂ O3) and zirconium oxide (ZrO ₂) as raw materials.
Characteristics: They can withstand ultra-high temperatures, have strong antioxidant properties, and although their density is relatively high.
Application: Metal oxide aerogel insulation sheets play a key role in the thermal protection of spacecraft and the thermal insulation layer of nuclear reactors.

2、 Classified by structural form
2.1 Pure Aerosol gel Tablets
Characteristics: This type of insulation sheet does not contain a carrier and has the characteristic of being lightweight, but its mechanical properties are relatively weak, so it usually needs to be encapsulated when in use, such as as as the core material of vacuum insulation panels.
2.2 Fiber reinforced aerogel heat insulation sheet
Reinforcement material: This type of insulation sheet significantly enhances its tensile strength by adding reinforcement materials such as glass fiber, ceramic fiber, carbon fiber, or pre oxidized wire. They can be processed into rolls or sheets to meet the wrapping requirements of complex shapes.
2.3 Composite aerogel insulation sheet
Composite mode: by combining with ceramic fiber felt, foam metal or porous polymer, this type of heat insulation sheet not only has excellent heat insulation performance, but also provides structural support function. For example, the composite felt of aerogel and ceramic fiber is widely used for heat insulation and support of high-temperature pipelines.

3、 Classified by functional characteristics
3.1 Hydrophobic aerogel insulation sheet
This type of insulation sheet has undergone special surface silane modification treatment, which gives it excellent hydrophobicity and a contact angle of over 150 °. In humid environments such as ships and cold storage facilities, the use of this insulation sheet can effectively prevent water absorption, thereby ensuring its stable performance.
3.2 Hydrophilic aerogel insulation sheet
The characteristic of this type of insulation sheet is its hydrophilicity, which is particularly suitable for occasions that require moisture absorption or use in combination with phase change materials (PCM), such as temperature regulating textiles.
3.3 Flame retardant aerogel heat insulation sheet
This type of insulation sheet has been specially modified with flame retardants such as phosphorus compounds, and has successfully passed UL94 V-0 certification. They have a wide range of applications in fields such as new energy vehicle battery packs and building fire isolation layers.

4、 Classification of Preparation Processes
4.1 Supercritical dry gas gel
This type of aerogel is famous for its integrity of pore structure and excellent performance. However, its high cost and long production cycle also restrict its wide application.
4.2 Atmospheric dry air gel
This kind of aerogels has been optimized by the sol gel method, and the production cost has been reduced, which is very suitable for large-scale production. Although its porosity is slightly lower than that of supercritical dry gas gel, atmospheric dry gas gel has been widely used in many fields due to its superior cost and production capacity.

5、 Future prospects
Multi functional integration:
The aerogel will be combined with sensors, energy storage elements or self-cleaning technology to expand its application range.
Cost reduction strategy:
By further optimizing atmospheric drying technology and developing and utilizing bio based raw materials such as cellulose, production costs can be reduced.
Adapt to extreme environments:
The aerogel material that can withstand ultra-high temperature (>1500 ℃) or deep low temperature (such as liquid hydrogen storage) environment has been developed.

6、 Typical application scenarios
In the industrial field, aerogels are widely used in the thermal insulation of petrochemical pipelines and LNG tanks, among which SiO ₂ - based fiber reinforced aerogels perform well. In addition, in the construction field, curtain wall insulation interlayer and energy-saving windows also use a large number of aerogel technology, especially transparent aerogel glass, which is both beautiful and practical. In aerospace, the heat insulation of rocket engine nozzle mainly depends on the high efficiency of ZrO ₂ aerogel. The new energy field is also a stage for aerogel to show its skills. The thermal insulation of new energy vehicle batteries and the fireproof layer of high-speed railway carriages are inseparable from its contributions.

7、 New energy power battery gas gel insulation pad supplier
It is estimated that by 2028, the global market size of aerogel will exceed the threshold of US $5 billion, of which the new energy power battery insulation pad market occupies a pivotal position. With the rapid development of China's new energy vehicle market, the demand for aerogel insulation pads also shows a strong growth momentum. Many enterprises have entered the field of new energy gas gel materials to meet the strong demand of the market.

In the domestic and international markets, many well-known suppliers of aerogel insulation pads stand out, such as Abby Aihe, Wujiang Electromechanical, Haiying Special Material, etc. These enterprises not only provide high-quality aerogel insulation cushion products, but also are committed to promoting the development of new energy technologies. In addition, many emerging companies such as Nano Technology and Fanrui Yihui have also occupied a place in the market.
The industrial chain of aerogel enterprises covers key links such as gelling and packaging, as well as diversified downstream applications such as battery packs, energy storage, rail transit, construction and pipelines. From the precursors of materials to various fibers such as ceramic fiber, glass fiber, foam, etc., to packaging materials such as PET, PI film, hot-melt adhesive, silica gel frame, etc., every link of the industrial chain of aerogel enterprises is crucial. At the same time, equipment in the production process such as supercritical equipment, hot press machines, die-cutting equipment, etc. are also indispensable components.