Thermally Conductive Silicone Sheet
Thermal conductive silicone sheet is a flexible thermal conductive medium material synthesized through a special process using organic silicon as the substrate and high thermal conductivity fillers such as alumina and boron nitride added. Featuring high thermal conductivity, insulation, and weather resistance, it can fill the gaps between electronic components and heat sinks, replacing traditional silicone grease and solving the problem of performance degradation caused by heat accumulation in equipment. It is suitable for various fields such as consumer electronics, automobiles, and communication base stations.
Description
1, Introduction to Thermal Conductive Silicone Sheet
Thermal conductive silicone sheet is a type of silicone product with high thermal conductivity. It is a thermal conductive material made from silicone as the substrate, added with thermal conductive fillers such as metal oxides, and processed through mixing, vulcanization, and other processes. It has good flexibility, insulation, and temperature resistance, and is widely used in electronic devices for heat dissipation, gap filling, and insulation, such as LED lamps, computer hosts, servers, etc. It can also be used for induction cooker cooking, induction cooker base heating, high-temperature surface heating of kitchenware and metal products, electric blankets, and oven heating. It is also widely used in thermal control of industrial products.
2, Raw materials for production
The raw materials for manufacturing thermal conductive silicone film usually include thermal conductive powder, thermal conductive silicone oil, adhesives, flame retardants, etc. The selection of raw materials should be determined based on factors such as the required thermal conductivity, material cost, and availability. For example, if thermal conductive silicone sheets are required to have high thermal conductivity and strength, the selection of raw materials will focus more on high thermal conductivity thermal conductive powders; If better insulation performance and high temperature resistance are required, the raw materials will be adjusted accordingly.
3, Production steps
(1) Raw material preparation
Select suitable raw materials such as thermal conductive powder, thermal conductive silicone oil, adhesive, flame retardant, etc. based on product performance requirements and cost considerations. For example, for products that require high thermal conductivity, thermal conductive powder 13 with excellent thermal conductivity performance will be selected.
(2) Proportioning and Mixing
Mix the prepared raw materials according to the required formula, and then use a mixer or ball mill to blend them together, ensuring that the final composition of the thermal conductive silicone film meets the required specifications. For example, based on specific thermal conductivity and physical performance requirements, the proportion of each raw material can be precisely controlled.
(3) Forming
The molding methods usually include compression and extrusion. Taking compression as an example, the mixed material is placed in a hopper and sufficient pressure is applied to press it out through a rolling mill to achieve the required thickness and width, in order to meet the size requirements of different application scenarios.
(4) High temperature baking
The extruded material needs to be subjected to high-temperature baking, heating the material to a temperature below its melting point to bond the particles together, making the material more compact and improving its performance.
(5) Processing and testing
Processing: Cut the baked material separately into various sizes required by the customer, which may require cutting molds. For example, cutting materials into specific shapes and sizes according to customer demand.
Testing: Conduct various tests on materials, including thermal conductivity testing, physical performance testing, etc., to ensure that they meet the required requirements. Only products that pass the test can proceed to the next step of process .
4, Customized instructions
The manufacturing process of thermal conductive silicone film can be customized according to different materials and applications. For example, some application scenarios require thermal conductive silicone sheets to have high thermal conductivity and strength, while others require good insulation and high temperature resistance. Therefore, during manufacturing, adjustments and optimizations will be made to the selection of raw materials, formula ratios, production processes, etc. according to different application requirements.
5, Quality control
During the production process, a series of inspections and tests are required to ensure that each batch of thermal conductive silicone sheets meets the specifications and performance requirements. Strict quality control can ensure the quality and consistency of thermal conductive silicon film, providing customers with reliable products.
6, Product advantages
High thermal conductivity: It can quickly and effectively dissipate heat, improve heat dissipation efficiency, and maintain stable device temperature in electronic devices.
Good insulation: can ensure the safe operation of electronic devices, avoid equipment damage and safety hazards caused by leakage and other problems.
Strong temperature resistance: It can work stably for a long time in the temperature range of -50 ℃ -200 ℃ and adapt to different working environments.
Easy to use: Due to its soft, foldable and bendable characteristics, it can adapt to various complex structures and irregular surfaces, making it easy to install and use.
Other advantages: It can achieve low thermal resistance under low pressure, low hardness, good compliance, low stress, and can more effectively protect electrical components; Has superior high and low temperature resistance, weather resistance, radiation resistance, and dielectric properties; Excellent chemical and mechanical stability, without the need for chemical reactions; Die cutting capability, convenient for mass production; Can be reworked without any change in adhesive strength; It can be cut according to customer requirements, with no backing tape, single-sided or double-sided adhesive tape available for selection.
7, Application Cases
(1) In the field of electronic devices
In computer hosts, thermal conductive silicone pads can quickly transfer the heat generated by the CPU to the heat sink, and then dissipate the heat through a fan to ensure that the CPU operates at a suitable temperature, avoiding performance degradation or even damage caused by overheating.
(2) Electromagnetic stove field
The thermal conductive silicone sheet for induction cookers is divided into calcium silicate version and silicone version. The material of the calcium silicate version is mainly gypsum, which is hard and heat-resistant; The silicone version is mainly made of silicone, which can resist higher temperatures. They are installed on the top or base of the induction cooker, which can use the heat generated by the cooking of the induction cooker to continuously heat the food, avoid uneven heating of the ingredients, and also suppress the heat loss of the food, keeping it fresh. In addition, it can also be used for high-temperature surface heating of kitchenware, metal products, and as a heating material for electric blankets and ovens.
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