What is a liquid metal thermal paste?Liquid metal thermal paste is a paste-like material with metallic characteristics.It has the following characteristics:1.High thermal conductivity2. Good adhesion3. High temperature resistance4. Does not flow at high temperatures5. Non-volatile6. Does not oxidize7. Does not cure at room temperature8. Conductive9. Non-flammable and explosive10. Non-toxic environmental protectionApplication fields of liquid metal thermal paste.Liquid metal thermal pastes can be used in magical aerospace and Computer configuration, and much more. This is a novel in recent years, and its thermal conductivity is far superior to traditional silicone oil-based silicone grease.The method of use is to first clean the surface of the object, take out a small amount of liquid metal thermal paste, and apply it evenly on the surface.It is also a pure metal paste-like thermal interface material, which has super high thermal conductivity and stability, can break through the traditional thermal interface materials, and has excellent thermal conductivity. Widely used for heat dissipation of electronic equipment in high temperature and high density heat flow occasions.How often to replace theliquid metal thermal paste?After testing, the performance of the liquid metal thermal paste used on the CPU for more than 2 years has not deterioratedIt can be seen that the liquid metal thermal paste has a long service life.NOTICE: Liquid metal is conductive, novices need to do a good job to insulation, and don’t put liquid metal with aluminum and aluminum alloyLiquid metal thermal paste and thermally conductive silicone greaseSilicone grease filling effectFor safety considerations, the conductivity of silicone grease must be very weak. Therefore, some silver and aluminum will be added on the basis of aluminium oxide to improve the thermal conductivity. Due to the smallest particles still can’t fill the gap completely, the effect of silicone grease is very limited.Advantages of liquid metals Even if the traditional silicone grease doesn’t care about the conductivity, full use of metal powder is useless. The cost of moving from micron to nanometre will increase exponentially, but the performance will be not very strong.Metals are directly composed of atoms, and the atoms are connected by metal bonds. Since the outer layer of the gallium atom has only three electrons, the force of constraining between the atoms is very weak, so the gallium-based alloy can be in a liquid state at normal temperature.Liquid metalfilling effectNanometrethermalpasteThe performance of liquid metal is modified by a special process. The metal thermalpaste made by adding nanometre metal particles is a 100% thick metal thermal grease with a thermal conductivity that more than 20 W / m · K, it’s veryadhesive and heatresisting. It will not flow, evaporate, oxidize or dry out in high temperature environments. It is an ideal thermally conductive material to replace silicone grease. It can also be used for IGBT and large LED cooling, power battery cooling, CPU / GPU cooling, and can maintain high thermal conductivity and safety for a long time. Metal thermal paste is a non-toxic product that complies with EU RoHS standards. It can be directly applied between the heat source and the heat sink, which can completely fill the gap and take advantage of the high thermal conductivity of the metal. The applied thickness can be between 0.01 mm and 0.2 mm. At the same time, the liquid metal does not react with copper and stainless steel, so that the safety and service life of the contact device can be achieved. ingredientGaInSnAgZnThermal conductivity>20W/m·KPackaging specifications5g, 10g, 100gConductivity3 X 106S/mViscosity8000 mPa·sOperating temperature-50℃～600℃Volatility
Are the liquid metal thermal pastes that be used in CPUof laptop dangerous and corrosive?In few years ago, people blurry think that liquid metal thermal paste could corrode the radiator and conduct electricity, no one to use it. That's because people don't know much about liquid metal thermal paste.But the truth is use of liquid metal thermal paste on the CPU is obviously better than the currently available heatconduction grease. Not only is it not corrosive, but as it doesn’t need additional protection, as long as it's used correctlyAs shown at right, it is the effect sketch of the liquid metal thermal paste on the CPU, the gray metal who looks like plasticine actually is insulating material. it can prevent the conductive effectively. For the CPU, it doesn’t require additional protection as long as the cover is not opened and the liquid metal is applied not too much. Liquid metal thermal paste is not corrosive. As long as it uses properly and evenly, the effect after use is also very prominent.Caution: Do not use too much liquid metal thermal paste on the CPU. Do a good job of insulation protection, open the cover with caution. In recent years, with the development of electronic devices toward higher integration, the heat generated in the unit area has continued to rise.In order to meet requirements of heat dissipation, the heat product by electronic devices needs to be conducted to the heat sink firstly and then emitted from the heat sink to the air.However, there are a large number of extremely uneven potholes between the surface of the electronic device and the heat sink.Therefore, people generally adopt the thermal interface material with high-thermal conductivity to fill the potholes, and the air in it is eliminated.Thus establishing a heat conduction channel between the surface of the electronic device and the heat sink.A new type of liquid metal filled thermal conductive silicone grease can be product by f filling liquid metal into a silicone oil matrix.The results of the study show that the thermal conductivity of liquid metal filled silicone grease is eminently better than the currently available thermal grease.
How to use thermal paste correctly?In case of the CPUA. Clean the CPU core and radiator surface with a high purity solvent such as high purity iso-amyl alcohol or acetone and a flurry-free cloth such as a cloth used for wiping lenses (a fingerprint may be about 0.005 inches thick).If the surface is clean without oil, this step can be skipped, if there is more difficult to clean the oil, can use precision electrical cleaner cleaning, will not be in conflict with thermal paste.B. Determine the area where the CPU is in contact with the heat sink and squeeze enough thermal paste into the center of the area.C. Using a clean tool, remove a small amount of thermal paste and transfer it to the corner of the CPU core. You only need a small piece, about half the size of a grain of rice.D. Slip your fingers into the plastic bag, then rub the thermal paste on the bottom of the radiator with your fingers until the thermal paste evenly covers the entire area in contact with the CPU.Ensure that the thermal paste can fill the bottom of the radiator gap and uneven places.Note: do not apply directly with your fingers.E. With no flannelette will be wiped off the heat conduction paste at the bottom of the radiator, at this time you can see the heat conduction paste at the bottom of the radiator and other areas color is not the same, indicating that heat conduction paste has evenly filled the gap in the base.F. Start with the tool at the corner of the CPU core and spread the thermal paste evenly throughout the core.The flatter the surface to be contacted, the thinner the need for thermal paste.For an ordinary radiator underside, the thermal paste is about the thickness of a piece of regular paper (0.003-0.005 inches). If the radiator underside is bright and flat, the thermal paste can be as thin as translucent. G. Make sure there are no foreign bodies on the radiator base and CPU core surface. Place the radiator on the CPU. At this point, only press lightly and do not rotate or shift the radiator.Otherwise, it may lead to uneven thickness of thermal paste between the radiator and CPU.If there is no metal thermal paste on the CPU, which problems will occur?Metal Thermal paste is the heat conduction material of electronic components, such as the gap between the processor CPU and the radiator, the filling of the gap between the high-power transistor, SCR element diode and the material (copper, aluminum), the assembly of transistors, CPU;Temperature sensor;Automotive electronic parts, automotive refrigerator, power module, printer head, electronic appliances, audio crystal cooling, reduce the operating temperature of heating components, increase the life of the crystal.Thermal paste has excellent heat resistance, electrical insulation, thermal conductivity, damping, and viscosity is not sensitive to temperature.Its chemical properties are stable, volatile, non - toxic and tasteless. If there is no metal thermal paste on the CPU, some serious problems will occur as below:A. If there is no heat conduction paste between the CPU and the radiator, although the computer can be turned on, but the full load temperature is very high, resulting in the running speed will become very slow, believe that now basically everyone has a computer, under the same conditions, the CPU temperature, the operation of the computer light and easy to see can be seen.B. It is recommended to apply thermal paste, because the difference between thermal paste and no thermal paste can be up to 30℃, the stability of the system is greatly affected.C. The material of thermal paste also affects the thermal conductivity, such as ordinary thermal paste and gallium based alloy thermal paste, thermal conductivity difference will directly affect the service life of the heating original. However, heat conduction paste also has service life, the service life of general heat conduction paste can reach more than a year.When found that the CPU began to heat, it means that the heat dissipation performance of thermal paste began to decline, in order to CPU life safety, thermal paste is essential.