Uniform mixing of thermal conductive sheet materials, thermal conductivity enhancement solution

The core value of thermal conductive sheets lies in efficient heat transfer, and their thermal conductivity is entirely dependent on the uniformity of the mixing of thermal conductive fillers (such as graphene, alumina, boron nitride) with the substrate material. Traditional mixing often leads to agglomeration of fillers and insufficient wrapping of the matrix, which not only creates a "local insulation zone" in the thermal conductive sheet, but also affects the consistency of appearance due to color mottled, directly reducing the reliability of heat dissipation of the end product. ​

1、 Mixing of thermal conductive sheet material: the difference in effect is intuitively visible
In response to the composite characteristics of thermal conductive sheet materials (thermal conductive fillers+silicone/rubber/resin matrix), SMIDA achieves a breakthrough from "unevenness" to "homogenization" through the synergistic effect of "centrifugal homogenization+precise shearing":
After traditional mixing, the thermal conductive filler aggregates into visible particles, and there is a clear layering between the matrix and the filler; The color depth of the thermal conductive sheet varies, and there are local "white spots/black spots"; Tests have shown that thermal resistance fluctuates greatly, and heat accumulation can easily cause equipment overheating. ​
After SMIDA stirring: the thermal conductive filler is completely dispersed in the matrix without any agglomerated particles; The thermal conductive sheet has uniform and consistent color throughout the entire area, with a smooth and flawless surface; Stable and significantly reduced thermal resistance, greatly improved heat transfer efficiency, suitable for high-power heat dissipation needs. ​

2、 Core application areas of thermal conductive sheet materials
SMIDA mixers are deeply adapted to various production scenarios of thermal conductive sheets, solving industry heat dissipation pain points:
1. In the field of new energy vehicles
Used for the production of thermal pads for power battery packs and motor controllers, SMIDA stirring ensures uniform distribution of thermal fillers, stable thermal conductivity of the pads, and can quickly export the working heat of the battery and motor, avoiding safety hazards caused by local overheating. It is suitable for new energy vehicles with long range and high power requirements. ​
2. In the field of consumer electronics
The CPU/GPU thermal conductive silicone sheet for smartphones and laptops is stirred by SMIDA without filler aggregation. The thickness of the thermal conductive sheet is uniform, and there are no gaps when bonding electronic components. The heat dissipation efficiency is increased by more than 30%, effectively solving the problem of "overheating and frequency reduction" of the device. ​
3. Industrial equipment field
The heat dissipation and thermal conductivity fins of industrial frequency converters and server cabinets are made of SMIDA mixed materials, which have more stable high and low temperature resistance and uniform thermal conductivity to ensure temperature balance of various components of the equipment, extend the service life of industrial equipment, and reduce maintenance costs. ​
4. LED lighting field
The heat dissipation substrate thermal conductive sheet of high-power LED lamps is fully integrated with the silicone substrate after stirring. The thermal conductive sheet can tightly adhere to the heat dissipation structure of the lamp, quickly dissipate the heat of the LED chip, avoid "light decay" caused by overheating, and extend the service life of the lamp to over 50000 hours. ​

3、 Highlights of exclusive mixing design for thermal conductive sheets
Directional dispersion structure of fillers: The stirring blade adopts a spiral tooth design, which achieves directional dispersion according to the different characteristics of sheet-like (graphene) and granular (alumina) thermal conductive fillers, avoiding the disorderly accumulation of fillers and affecting the thermal conductivity path. ​
Adaptive viscosity adjustment: Based on the viscosity changes of the matrix material (silicone/resin), different revolution and rotation speeds are matched to ensure the dispersion of the filler while avoiding performance degradation caused by excessive shear of the matrix. ​
Contactless mixing chamber: A mixing container is placed on the inner wall of the mixing chamber to avoid direct contact between the equipment and the material, reducing subsequent cleaning processes. ​

Free access to thermal conductivity testing
If you are troubled by uneven mixing of thermal conductive sheet materials and low thermal conductivity efficiency, please contact SMIDA to enjoy:
✅ Free sample testing
Official website testing application: www.smidacn.com
Email: blue_liu@smida.com.cn ​
Let the thermal conductive sheet truly achieve "uniform heat dissipation and efficient temperature protection".