The Higher The Thermal Conductivity Of Thermal Grease, The Better The Thermal Conductivity?

- Aug 31, 2020-

      The higher the thermal conductivity of the thermal grease, the better the thermal conductivity under normal conditions, but the correct use of the thermal grease also directly affects the thermal conductivity of the thermal grease. Everyone knows the principle that you pay for what you pay for. Some domestic thermal grease manufacturers have to consider their own gimmicks about performance, diamond, and silver content (it is impossible to buy ginseng at the price of radish).

      Thermally conductive silicone grease is a thermally conductive silicone material, which is widely used as a filler for the heat transfer medium between the heating element and the radiator. It can maintain the grease state when used for a long time at a temperature of -50 ℃-+230 ℃ , Will not appear to dry, harden or melt. So when we buy thermal grease, are the higher the thermal conductivity, the better the thermal conductivity?


What is the highest thermal conductivity of thermal grease? Is the thermal conductivity of thermal grease as high as possible?

导热硅脂导热系数最高是多少,导热硅脂导热系数是不是越高越好

      Regarding the above problem, I believe many friends have this idea: because thermal conductive silicone grease is used as a filler for the heat transfer medium between the heating element and the radiator to improve the thermal conductivity of the heating element. Therefore, for thermal grease, the higher the thermal conductivity, the better. But the facts tell us that this is only one-sided. The thermal conductivity of thermal grease is actually only one of the factors we consider in the purchase process.


      There are many factors that determine whether thermal grease is suitable for its own products, such as thermal conductivity, thermal resistance, oil release rate, price, etc. When all factors meet the requirements of product use, it can be called a good thermal grease. Because blindly pursuing high thermal conductivity, on the one hand, it cannot achieve the best thermal conductivity; on the other hand, it may also cause unnecessary waste of cost. Nowadays, the thermal conductivity of thermal grease on the market is generally 0.8-5.0W/(m·K) (measured according to international standards), and it is mainly divided into three colors: white, silver and gray. The following factors should be considered when purchasing thermal grease:

1. Thermal conductivity: Under the same other conditions, the higher the thermal conductivity of the product, the faster the thermal conductivity, and therefore the better the effect.

2. High and low temperature resistance: The working temperature of high-quality qualified thermal conductive silicone grease is relatively wide, and it can generally maintain the grease-like form at a temperature of -50°C to 230°C for a long time. However, many thermally conductive silicone greases doped with other substances on the market will swell when the temperature is too high, the volume of the thermally conductive silicone grease will swell, causing the distance between molecules to be extended and the mutual force weakened, even after a period of use Dry and cracked.

3. Oil separation and volatility: This is an important index for evaluating the heat resistance and stability of the product. Generally speaking, the lower the oil content of thermal grease, the better, because silicone grease with higher oil content will separate some grease after being used or stored for a long time. These greases not only increase thermal resistance, but may also cause short circuits in electronic product accessories.


What is the highest thermal conductivity of thermal grease? Is the thermal conductivity of thermal grease as high as possible?

Product introduction of GLPOLY thermal grease XK-X series:

Thermal conductivity of GLPOLY thermal grease XK-X series: 1.0-5.0W/(m·K). A variety of thermal conductivity and packaging for customers to choose.

product advantages: 

1. Use high-quality polysiloxane and first-class thermal conductivity and insulating materials, as well as special additives and pastes synthesized by technology.

2. It is suitable for high heat source thermal interface material, which is different from the traditional thermal grease 50-80um interface thickness. GLPOLY thermal grease XK-X series materials provide applications below 50um.

3. There is no liquefaction, solidification, cracking, etc. during use, no lead metal or other harmful substances, and no adverse effects on the human body.

4. XK-X series of thermal conductive silicone grease has good thermal conductivity, low oil permeability and high temperature stability, thereby improving the heat transfer from electrical appliances and electronic devices to radiators or chassis.

5. It can work in an environment of -50C-150°C without air drying, hardening or melting.


GLPOLY thermal grease XK-X series product uses:

1. It is used to form a layer of heat transfer on the heating tube as a medium for heat: such as the heating tube in irons, coffee pots, and electric kettles to dissipate heat.

2. The medium between the power amplifier tube and the heat sink used in the electronics industry: such as TV, CD, VCD, IC and power amplifier on the host computer.

3. Other product applications. LCD display tube, LED lighting, CPU heat dissipation.


Instructions for use of GLPOLY thermal grease XK-X series products:

1. The surface in contact with thermal grease must be clean and dry;

2. Spread a thin layer of thermal grease evenly on the flat surface of the electronic device or radiator;

3. Press the electronic device and the plane of the radiator tightly, so that the thermal conductive silicone grease forms a very thin interface between the two planes;

4. Reinforce the radiator;