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Introduction to thermal conductive gel and its applications


Thermal gel series products are a two-component preformed thermally conductive silicone grease product that mainly meets the needs of low pressure and high compression modulus when the product is in use. It can realize automated production and have good contact and performance when assembling electronic products. It has low contact thermal resistance and good electrical insulation properties. This material has some advantages of both thermal pads and thermal grease, which better makes up for the weaknesses of both.

Thermal conductive gel inherits the advantages of silicone materials such as good affinity, weather resistance, high and low temperature resistance, and good insulation. At the same time, it has strong plasticity and can fill uneven interfaces and meet the heat transfer needs of various applications. It has high-efficiency thermal conductivity, low compression force application, low pressure, high compression ratio, high electrical insulation, good temperature resistance, and can realize automated use.

Characteristics of thermal conductive gel

01Performance features

Compared with thermal pads, thermal conductive gel is softer and has better surface affinity. It can be compressed to a very low thickness, which significantly improves the heat transfer efficiency. It can be compressed to a minimum of 0.1mm. At this time, the thermal resistance can be At 0.08℃·in2/W – 0.3℃·in2/W, the performance of some silicone greases can be achieved. In addition, thermal conductive gel has almost no hardness and will not produce internal stress on the equipment after use.

02 Advantages of continuous operation

Thermal conductive gel can be directly weighed and used. The commonly used continuous use method is a dispensing machine, which can achieve fixed-point quantitative control, save labor and improve production efficiency.

03 How to use thermal conductive gel

When using manual thermal glue, you need to unscrew the mouth cover, connect the threaded mixing head, then clamp the hose into the bayonet of the AB glue gun, and apply glue hard. The AB glue is extruded from the glue gun to the mixing head, and guided by the thread. Complete the uniform mixing (the two colors A/B are mixed into a uniform color), and finally apply the uniformly mixed thermal conductive glue to the heating position according to the heat dissipation structure design. For the dispensing type, follow the instructions for use of the dispensing machine.

04 The curing time starts from the contact between the A and B glue mixing heads. The viscosity will increase in 5 minutes and dry in 10 minutes. From 30 minutes to 3 hours, the product will gradually harden and become elastic, showing that the hardness continues to rise until it no longer changes. .

05 Reliability: The cured thermally conductive adhesive is equivalent to a thermally conductive silicone sheet, has good high temperature resistance and aging resistance, and can work at -40~150℃ for a long time.

06 Special attention: Thermal conductive gel is different from adhesive glue. Its adhesive force is weak and cannot be used to fix heat sinks.

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