Aerogel Insulation Paste

 

Key Properties：

1. Effective barrier heat transfer mode: its nanoscale porous structure can inhibit gas convection, making it difficult for air molecules to move freely in the pores, thereby reducing the heat loss caused by air convection; At the same time, it can reduce the solid heat conduction. When heat is conducted in the solid skeleton of aerogel, the path is tortuous and long, and the conduction difficulty is significantly increased. It can also block thermal radiation, and has significant scattering and absorption effects on thermal radiation, further enhancing the heat insulation effect.

 

2.Good chemical stability: The aerogel itself is chemically stable, and the thermal insulation paste made can resist the erosion of a variety of chemical substances, and can maintain stable performance in different chemical environments. It can be used for equipment insulation in chemical, petroleum and other industries to reduce the safety risks caused by chemical corrosion, while some traditional thermal insulation materials may have performance degradation or damage in specific chemical environments.

 

3. Low maintenance cost: Due to the long service life and stable performance of aerogel insulation paste, frequent replacement and maintenance are not required during use, greatly reducing maintenance costs and human input. Traditional insulation materials have a relatively short service life and need to be replaced regularly, increasing maintenance costs and workload.

 

4. Good flexibility: Some aerogel insulation paste has a certain degree of flexibility, can be bent or stretched to a certain extent, to adapt to the heat insulation needs of different shapes and moving parts, while the traditional block or plate insulation material flexibility is poor.

1. Inhibit gas convection
Nanoscale pores limit air flow: Aerogels, the core component of aerogels thermal insulation paste, have nanoscale porous structures with a porosity of up to 80%-99.8%. These pores are extremely small, and the average pore size is usually less than the free path of air molecules (about 70nm at normal temperature and pressure). When the air is wrapped in such a small pore, the heat convection movement between molecules is greatly limited, and it is difficult to form an effective heat transfer channel, which inhibits the air convection heat transfer. This is like "locking" the air, so that it cannot move freely to transfer heat, greatly reducing the heat loss caused by air convection.

2. Reduce solid heat conduction
Zigzag paths impede heat conduction: The aerogel's solid skeleton consists of nanoscale particles interconnected to form a highly dispersed and intricate structure. This structure allows heat to travel along extremely winding and long paths as it travels through the solid skeleton. Different from the relatively straight heat conduction path in conventional materials, the distance of heat conduction in aerogel is greatly extended, and the conduction difficulty is significantly increased, thus effectively reducing the efficiency of heat conduction.

Low thermal conductivity reduces conduction heat: Aerogel itself has an extremely low thermal conductivity, which is one of the key factors for its excellent thermal insulation performance. Low thermal conductivity means that relatively little heat is transmitted through the aerogel at the same temperature gradient. Even if the heat enters the solid skeleton of the aerogel, due to its low thermal conductivity, the speed of heat transfer will become very slow, further reducing the overall heat conduction.

3. Block thermal radiation
Microstructure scatters thermal radiation: The nanoporous microstructure of aerogel has a significant scattering effect on thermal radiation. When the heat radiation enters the aerogel insulation paste, it will constantly reflect and scatter between the numerous pore walls and the solid skeleton. This scattering makes the propagation direction of heat radiation constantly change, and the originally linear heat radiation energy is gradually dispersed and consumed in the process of multiple scattering, which is difficult to directly penetrate the material, thus effectively blocking the transmission of heat radiation.

Specific components absorb thermal radiation: The aerogel insulation paste may contain some components that have the ability to absorb specific wavelengths of thermal radiation. These ingredients are able to absorb the energy of thermal radiation and convert it into other forms of energy, such as heat energy, which in turn prevents the heat radiation from passing directly through the insulating paste. Through the double action of scattering and absorption, the aerogel thermal insulation paste can effectively block the thermal radiation and further enhance its thermal insulation effect.

4. Good sealing reduces heat transfer
The paste form forms a dense sealing layer: the aerogel thermal insulation paste is a paste, which can be closely adhered to the surface of the protected object after application to form a continuous and dense sealing layer. This sealing layer can not only prevent the convection of air heat transfer, but also prevent the interference of external factors such as water vapor on the heat insulation effect. For example, if water vapor intrudes into the thermal insulation material, it will greatly increase the heat transfer due to the high thermal conductivity of water, and the sealing layer of aerogel thermal insulation paste can effectively avoid this situation and ensure the stability of the thermal insulation performance.

1. How to monitor product quality in real time on the production line, and how to deal with quality fluctuations?
A number of quality control points are set up on the production line to monitor raw material input, reaction process parameters, and product samples in real time. In case of quality fluctuations, immediately suspend the production line, trace the source of the problem, replace the batch if it is a raw material problem, and adjust the parameters in time if it is a process problem. At the same time, the products already produced are fully inspected to ensure that unqualified products do not enter the market.

2. How to ensure the consistency of product quality in different batches?
We have established standardized production process and strict raw material inspection system. Each batch of raw materials has to pass strict inspection, and only those that meet the standards can be put into production. The production process is carried out in strict accordance with the established process parameters, and staff training is strengthened to ensure uniform operation standards. In addition, the production equipment is calibrated and maintained regularly to reduce product differences caused by equipment factors.

3. Is the construction of aerogel insulation paste complicated? Do you need any special tools and skills?
Construction is relatively simple and requires no special tools. Because it is paste, it can be directly applied on the surface of the object with common tools such as spatula and scraper. After simple training, the construction personnel master the basic smearing skills to ensure uniform smearing. However, for large area construction, it is recommended to use mechanical coating equipment to improve efficiency.

4. How to further improve the compatibility of aerogel insulation paste with different substrates?
We are conducting in-depth research to improve the interaction with different substrate surfaces by adjusting the formulation of the aerogel insulation paste and adding specific coupling agents or interface modifiers. At the same time, according to the characteristics of different substrates, customized pretreatment processes are developed to enhance the adhesion and compatibility between the two. At present, significant improvement has been achieved on some metal and plastic substrates, and it will continue to expand to more types of substrates in the future.

5. In the context of global supply chain, how to deal with possible logistics and transportation problems?
We have developed a diversified logistics strategy, working with multiple logistics service providers to ensure reliable logistics channels in different regions. For international transport, we pay close attention to international trade policies and transport market dynamics, and plan transport routes in advance to avoid delays caused by trade barriers or transport congestion. At the same time, we have established a logistics early warning mechanism to track the status of cargo transportation in real time, and in case of problems, we can quickly launch emergency plans, such as adjusting the mode of transportation or changing logistics partners, to ensure that products are delivered to customers on time.

6. How to ensure that products always comply with relevant regulations and certification standards?
We have set up a special regulatory compliance team, responsible for tracking changes in domestic and foreign regulations and policies, and timely convey relevant information to the R & D, production and quality control departments. In the process of product development and production, we design and operate in strict accordance with regulations and certification standards, and carry out strict quality control in every link from raw material procurement to product delivery. Regular internal and third-party testing of products to ensure that products continue to comply with relevant regulations and certification standards. At the same time, strengthen communication and cooperation with certification bodies, and timely understand the update of certification standards in order to prepare for it in advance.

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