Reliability has always been pursued by people. Although there is no product in the world that can be used permanently, high reliability products allow people to use them with peace of mind without worrying about problems. With the development of society, people's material wealth has increased, and they have begun to pursue a high-quality life. Reliability is also one of their pursuits.
Thermal management is a specialized field for solving thermal problems, and thermal interface materials are a well-known discipline in the field of thermal management. With the development of the economy and technological progress, many high-tech products have been developed, and their own heat dissipation needs to be solved in a timely manner. In the past, when there was no thermal management field, people often simply installed heat sinks on power consuming components, which had low heat dissipation effects. Subsequently, thermal interface materials were filled between the heat sink and power consuming components to reduce interface thermal resistance and improve thermal conductivity.
Thermal conductive silicone sheet is a member of thermal conductive interface materials. Thermal conductive silicone sheet, also known as thermal conductive silicone film, heat dissipation silicone film, etc., is a gap filling thermal conductive material made by refining silicone resin as the substrate and adding thermal conductive, temperature resistant, and insulating materials in a certain proportion. It is filled between the heat source and the heat sink, serving as a thermal conductive medium. Due to its soft nature, it can eliminate air between the interfaces, improve thermal conductivity efficiency, and reduce interface thermal resistance.
The reliability of thermal conductive silicone film is highly valued by people. Many thermal conductive material manufacturers advertise high reliability to attract people's attention. People may say that thermal conductive silicone film is just an auxiliary material for thermal conductivity, as long as it has a high thermal conductivity and low oil output?
Here is a simple life example to illustrate. A person who purchases a fast and fuel-efficient car, but it is very unreliable and goes to the 4S store for maintenance four or five times a month, would still consider it a car? The reliability of thermal conductive silicone film is not only responsible for oneself, but also for customers. Thermal conductive silicone film is not a short-term product. According to big data statistics, the service life of thermal conductive silicone film is generally 5-10 years. If problems occur frequently during use, it will not only affect the thermal conductivity, but also the reliability of the product.
How to determine the reliability of thermal conductive silicone film? Firstly, the main function of thermal conductive silicone film is thermal conductivity, and thermal conductivity is a parameter that intuitively understands the performance of thermal conductive silicone film. However, there may be some changes in thermal conductivity during long-term operation, which is normal. As long as it does not exceed the error range, it represents that the reliability of thermal conductive silicone film is qualified.
Then, is the oil release rate of the thermal conductive silicone film normal? The oil release phenomenon of the thermal conductive silicone film is normal because there are not many finished products of the thermal conductive silicone film, and there may be some small molecules that are not completely mixed and are free. In a long-term heated and compressed environment, small molecules will precipitate. If the quality of the thermal conductive silicone film is unqualified, its oil release rate will increase, which will affect the reliability of the product.
Secondly, the compression rate and resilience of thermal conductive silicone film. Thermal conductive silicone film is a soft and elastic thermal pad that fills the interface and has compression and rebound under low pressure. If the compression rate and rebound of thermal conductive silicone film are not qualified, it may cause the thermal conductive silicone film to be unable to recover to its original state, thereby affecting its performance.
Thermal conductive silicone sheet is an effective thermal interface material that can improve the heat transfer rate between power consuming components and heat sinks. High reliability thermal conductive silicone sheet not only solves the heat dissipation problem of the product, but also improves its stability.