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​What factors affect the thermal conductivity of thermally conductive silicone grease.

2021-09-25 03:02:35

Professional thermal gel, thermal grease manufacturer. What factors affect the thermal conductivity of thermally conductive silicone grease.

Many electronic products are directly affected by the high temperature caused by the work, which directly causes the product life to be shortened sharply, and even stops working directly after the high temperature. The existing heat dissipation system is completely unable to meet the needs of work until the emergence of thermal grease, which effectively solves the heat dissipation problem , Also reflects the importance of thermal grease. Therefore, the thermal conductivity of thermal grease is very important. So, what factors will affect the thermal conductivity of silicone grease?


1. Deoiling rate

The base rubber generally refers to silicone oil, and the filler is a kind of heat-conducting material. If the compatibility of the two materials is not good, oil will be generated after short-term storage. Although the product can be used after stirring before use, the product is used. After that, as time goes by, the thermal conductive silicone grease used still has the phenomenon of free silicone oil in a short period of time. At high temperatures, the remaining filler will become more and more dry, and there will be powder and cracking phenomena, which will affect the heat transfer effect. Therefore, the user first understands the free parameters of thermally conductive silicone grease.

Second, viscosity.

One of the reasons why viscosity is said is that viscosity is determined by fillers and base materials. If the filler increases or decreases, it will affect viscosity. Thermal conductivity also affects thermal conductivity, but viscosity cannot be used as a measure of thermal conductivity. The size index is detailed in the article "The Relationship between Thermal Conductivity and Viscosity of Thermally Conductive Silicone Grease" published on the official website of Schneider in the early stage. Please go to the official website for inquiries.

Third, stickiness.

In this case, there is no stickiness. We all know that thermally conductive silicone grease will not cure. Viscosity refers to adhesion. If thermally conductive silicone grease is produced, it has no stickiness and is too dry to adhere to the product or adhere to the product. Can not stick to the product tightly, how does the heat generated by the product dissipate quickly, so that the thermally conductive silicone grease is easily separated from the product after use, and the thermal conductivity of the poorly viscous thermally conductive silicone grease is significantly reduced.

The radiator does not work well.

Here again, I would like to introduce to you an on-site solution application of Schnais. The customer uses Schnais thermal grease. Due to the high working temperature of the product, the thermometer will automatically alarm. The heat is radiated outwards, thinking it is thermal conductivity silicone grease, and the thermal conductivity is problematic. After the Schneider sales engineer arrives at the site, it is recommended to replace the radiator to return to normal immediately, because every batch of Schneider products must go through strict inspections when they leave the factory. And audit to ensure stable product performance, so the sales engineer rushed to the site to directly recommend the replacement of the radiator, to solve this problem, the radiator failure, indirectly believes that the thermal grease is abnormal, so the ability to self-examine and analyze is very important.

Factors affecting the thermal conductivity of thermal grease include the proficiency of the staff, the thixotropy, and the thickness of the adhesive layer.


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