Thermal conductive silicone is also called heat paste, cooling oil, silicone grease, thermal paste, belonging to organic compound into a paste of silicon thermal conductive materials, has good thermal conductivity, environmental protection, tasteless, electrical insulation and the characteristics of high and low temperature resistance, high stability, high temperature curing, slurry, do not contain toxic, harmless to human body, it has good compatibility with plastic, metal and other materials, no corrosion, swelling,Low oil separation, can be safely used in electronic and electrical products.As the heat transfer medium of heating element and radiator, thermal conductive silicone grease can play the role of heat dissipation and filling.Effectively and persistently transfer heat.
What are the parameters that determine the performance of thermal silicone grease?Yao Neng comes to analyze these problems with you:
1, thermal conductivity (thermal conductivity)
The thermal conductivity coefficient of thermal conductivity silicone grease is basically the same as that of radiator, its unit is W/ MK, namely the temperature difference of the cylinder with a cross-sectional area of 1 square meter along the axial direction of 1 meter distance is 1 kelvin (1K=1℃) when the heat conduction power.The higher the value is, the faster the heat transfer rate and the better the thermal conductivity of the material is.At present, the thermal conductivity coefficient of mainstream thermal silicone grease is more than 1.05W/mK, and the thermal conductivity coefficient is an important index to measure the parameters of silicone grease.
2, thermal resistance coefficient
The thermal resistance coefficient represents the obstruction of the heat transfer of the object.The concept of thermal resistance is very similar to that of resistance, and its unit is also similar (℃/W). It is the temperature difference between the two ends of the heat conduction path when the continuous heat transfer power of the object is 1W.Obviously, the lower the thermal resistance, the better, because the same ambient temperature and thermal power, the lower the thermal resistance, the lower the temperature of the heating object.There is a great relationship between the size of the thermal resistance and the material selected by the thermal conductive silicone grease. The raw materials of the thermal conductive silicone grease are of high quality.
3. Dielectric constant
Dielectric constant is a very important parameter, which is related to the computer or electronic and electrical products whether there is a short circuit.Common thermal silicone grease is the material of good insulation, but some special silicone grease (such as silver-containing silicone grease, etc.) may have a certain electrical conductivity.Now many CPUs are equipped with metal caps for heat conduction and protection of the core, so there is no need to worry about short circuit caused by heat conduction silicone grease overflow.At present, the dielectric constant of thermal silicone grease used in mainstream radiators is greater than 3.2.
4, working temperature
The working temperature is an important parameter to ensure that the thermal conductive silicone grease is in solid or liquid state. If the temperature is too high, the thermal conductive material will be transformed into liquid state.If the temperature is too low, it will become solid due to increased viscosity, both of which are not conducive to heat dissipation.The working temperature of thermal silicone grease is generally -50℃ ~ 200℃.As for the working temperature of thermal conductive silicone grease, the working temperature of most electronic and electrical products will not exceed this temperature range.
Shenzhen yiu can technology co., LTD is specialized in the production and sales of silicone grease, thermal paste, paste of thermal conductivity of thermal conductivity, thermal conductivity silica gel, the thermal conductive adhesive, thermal silicone power, high temperature electronic silica gel, silica gel, silica gel, etc., product quality reliable, products, environmental protection, can provide free samples for customer service and technical consulting, and related to replace the imported silicone and silicone products.
For more information about thermal silicone grease, thermal silica gel, electronic silica gel and thermal conductive materials, you can consult with Yaoneng Company or visit the website of Yaoneng Company http://www.ynbond.com. We will serve you wholeheartedly.