As thermal conductive silicone grease is a chemical substance, it also has relevant performance parameters reflecting its own working characteristics. As long as we understand the meaning of these parameters, we can judge the performance of a thermal conductive material: bels, Laird 1. Working temperature working temperature is an important parameter to ensure that the thermal conductive material is in solid or liquid state. If the temperature is too high, the thermal conductive material will be transformed into liquid; If the temperature is too low, it will become solid due to the increase of viscosity, which is not conducive to heat dissipation. The working temperature of heat conductive silicone grease is generally - 50 ℃ ~ 180 ℃. We don't have to worry about the working temperature of thermal conductive silicone grease. After all, it is difficult to exceed the temperature of CPU by conventional means. 2. Thermal conductivity the thermal conductivity of the thermal conductive silicone grease is basically the same as that of the radiator. Its unit is w / MK, that is, the heat conduction power when the temperature difference of the cylinder with a cross-sectional area of 1 square meter along the axial direction is 1 kelvin (1K = 1 ℃). The larger the value, the faster the heat transfer rate and the better the thermal conductivity of the material. At present, the thermal conductivity of mainstream thermal conductive silicone grease is greater than 1.134w/mk. 3. Thermal resistance coefficient thermal resistance coefficient represents the obstruction of an object to heat conduction. The concept of thermal resistance is similar to that of resistance, and the unit is also similar (℃ / W), that is, the temperature difference at both 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 under the same ambient temperature and heat conduction power, the lower the thermal resistance, the lower the temperature of the heating object. The size of thermal resistance is closely related to the material used in thermal conductive silicone grease. 4. Dielectric constant for some CPUs without metal cover protection, dielectric constant is an important parameter, which is related to whether there is a short circuit in the computer. Ordinary thermal conductive silicone grease adopts materials with good insulation, but some special silicone grease (such as silver containing silicone grease) may have certain conductivity. Now many CPUs are equipped with metal top covers for heat conduction and core protection, so there is no need to worry about the short circuit caused by the overflow of heat conduction silicone grease. At present, the dielectric constant of thermal conductive silicone grease used in mainstream radiators is greater than 5.1. 5. Viscosity refers to the viscosity of hot silicone grease. The viscosity of thermal conductive silicone grease is about 68. 6. Insulated heat conducting graphite sheet graphite heat sink is a new heat conducting and radiating material with unique grain orientation and uniform heat conduction along two directions. The lamellar structure can well adapt to the surface, shield heat sources and components, and improve the performance of consumer electronic products. The product not only dissipates heat evenly, but also provides heat isolation in terms of thickness. The molecular structure diagram of heat conducting graphite sheet is as follows: molecular structure diagram of heat conducting graphite sheet. The unique combination of heat dissipation and heat insulation properties of graphite heat conducting sheet (GTS) solution makes (GTS) heat conducting graphite an outstanding material choice for heat management solutions. (GTS) thermal conductive graphite sheet has ultra-high thermal conductivity in the range of 150-1500w / m-K. The chemical composition of (GTS) thermal flexible graphite sheet is mainly a single carbon (c) element, which is a natural element mineral. Thin film polymer compounds can obtain (GTS) graphitized films under high temperature and high pressure by chemical methods, because carbon is a non-metallic element, but it has the conductivity and thermal conductivity of metal materials and plasticity like plastics, Moreover, there are some good process properties such as special thermal properties, chemical stability, lubrication and coating on solid surfaces. Therefore, heat conductive graphite (GTS) has been widely used in many fields such as electronics, communication, lighting, aviation, national defense and military industry. (GTS) graphite heat conductive materials provide a unique solution with comprehensive high performance for the heat management industry.