Thermally conductive materials Currently, the mainstream products on the market are silicone-based thermally conductive materials. Because silicone is easier to add fillers, silicone is mostly used as a dispersant, and thermally conductive fillers such as alumina and boron nitride are added to improve the thermal conductivity of the product. However, silicon-based heat-conducting products will precipitate low-molecular-weight siloxane, which will cause short circuits and affect conduction. Therefore, silicon-based heat-conducting products are generally not used in precision components such as semiconductors.
Thermal conduction products are classified according to their form: they can be divided into thermally conductive adhesives, thermally conductive potting adhesives, thermally conductive caulking agents, thermally conductive silicone sheets, thermally conductive silicone grease, thermally conductive phase change materials, thermally conductive wave absorbers, and thermally conductive insulating sheets.
1. Thermally conductive silicone sheet (also called thermally conductive silicone pad
, Thermally conductive silicone sheet) has good thermal conductivity and high-level pressure resistance, which meets the current needs of the electronics industry for thermally conductive materials. It is the best product to replace the binary heat dissipation system of silicone grease thermal paste and mica sheet. This type of product is easy to install, conducive to automatic production and product maintenance, and is a new material with great craftsmanship and practicability. The thickness and hardness of the heat-conducting silicone sheet can be adjusted according to different designs, so in the heat-conducting channel, it can bridge the size difference between the heat dissipation structure and the chip, and reduce the work difference requirements for the contact surface of the heat dissipation device in the structural design, especially for the The flatness and roughness of the work difference, if the processing accuracy is improved, the product cost will be greatly increased, so the thermal conductive silicone sheet can fully increase the contact area between the heating element and the heat dissipation device, and reduce the production cost of the radiator.
2. Thermally conductive silicone grease is a white or gray thermally conductive and insulating viscous object. The substance has a certain viscosity, no obvious graininess, non-toxic, tasteless, non-corrosive, stable chemical and physical properties and excellent thermal conductivity. , electrical insulation, high temperature resistance, aging resistance and waterproof properties. Under normal circumstances, thermal conductive silicone grease is insoluble in water, not easily oxidized, and has certain lubricity and electrical insulation. TSP700 thermal conductive silicone grease also has low oil separation (tends to zero), and very good weather resistance (including high temperature resistance and low temperature resistance, water resistance, ozone resistance, weather aging resistance, etc.), and can be used at temperatures ranging from -30°C to 150°C Under long-term use, it can still keep the contact surface wet even at a temperature above +200°C.
3. Thermally conductive silicone tape is widely used in the bonding between power devices and heat sinks. It can realize the functions of heat conduction, insulation and fixing at the same time, and can effectively reduce the volume of equipment. It is a favorable choice for reducing equipment costs.
4. Thermally conductive silicone cloth is a silicone polymer elastomer reinforced with glass fiber as the base material, also known as thermally conductive silicone cloth, tear-resistant silicone cloth
5. The heat conduction phase change material utilizes the characteristics of the base material to undergo a phase change at the working temperature, so that the material can be more closely attached to the contact surface, and at the same time, it can obtain ultra-low thermal resistance and conduct heat transfer more thoroughly.
6. Thermally conductive gap filler, specially designed for optimizing dispensing control, achieving better thermal conductivity and mechanical properties, and has the advantage of being highly engineered. Since it is dispensed in a liquid state, the material exerts little stress on the part during assembly. Can be used to join and coat the most complex geometries and multi-layer surfaces, providing unlimited thickness coverage for uneven board geometries.
7. High thermal conductivity potting glue: It is a two-component addition type silicone rubber, which is composed of two parts AB and AB. After mixing according to the ratio, it will be cured into a high-performance elastomer through reaction. Provide excellent heat dissipation and moisture-proof potting protection for circuit board components.
8. Thermally conductive adhesive: One-component room temperature curing silicone rubber, which has excellent adhesion to metal, plastic, and ceramic surfaces after curing. It is widely used in filling and fixing between electronic components and radiators, improving Conduct heat and improve the stability of components. In particular, mechanically fastening structures cannot be achieved.
About silicone foam, please check the details:
https://www.siliconefoam.net/product-ultra-soft-silicone-iota-bf-2000-.html
