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Schematic diagram of silicone heating sheet (SCS):
According to industry insiders, the silicone heating sheet (SCS) is flexible, easier to get close to the heating object, and the shape can be designed to be heated according to the requirements, so that the heat can be transferred to wherever it is needed. While carbon is the main component of a general flat heating element, the silicone heater is composed of nickel alloy resistance wires arranged in an arrangement, so it can be used with peace of mind.
In addition, the surface heater can be made into a variety of shapes upon request.
Main features of Silica Gel Heating Sheet (SCS) products:
Silicone heating sheet (SCS) is also known as silicone heating film, silicone rubber heating sheet, oil drum heater, etc. Statistics of experts in the silicone rubber industry.
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Silicone heating sheet (SCS), that is, silicone rubber heating sheet (heating sheet), also known as silicone rubber heating gasket, electric heating film, electric heating heater, electric heating sheet, oil drum heater, heating belt, heating plate, etc., have different names.
Since the size of the silicone rubber heating element is basically not limited, from a few square meters to a few square centimeters, and can be designed into various shapes as needed, the heating element can be used for voltage conditions, making it more and more popular. It is used in various fields.
Silicone heating pads have been widely used in the following 18 industries, providing a thermal environment for outdoor communication equipment, outdoor thermal insulation and anti-freezing, chemical equipment heating, pipeline anti-freezing, outdoor equipment backup battery insulation, medical, solar equipment, etc.
1. Heating plate of heat transfer machine.
2. The baking cup is not (plate) machine heating sheet.
3. Oil drum heater.
4. Heater heater for heat sealer.
5. Heating and heat preservation of medical devices.
6. Chemical pipeline heating.
7. Heating of large equipment.
8. Semiconductor processing is set up for old and slow cracking.
9. Heating and heat preservation of various mechanical instruments.
10. Medical and outpatient treatment equipment, such as blood analyzer, respiratory instrument, and hydrotherapy instrument.
11. Antifreeze for military facilities, aircraft instruments and hydraulic equipment.
12. The battery is heated.
13. Catering service equipment.
14. Factory bonding and partial assembly for any application that requires a soft shape or design.
15. Analytical instruments.
16. Aerospace.
17. Anti-freezing equipment.
Classification of silica gel heating sheets: special-shaped silicone heating sheets, flexible silicone heating sheets, medical silicone heating sheets, and adjustable temperature silicone heating sheets.
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Thermal pads fill the air gap between the heat-generating device and the heat sink or metal base, and their flexible, elastic characteristics allow them to be used to cover very uneven surfaces. Heat is conducted from the discrete device or the entire PCB to the metal enclosure or diffusion plate, increasing the efficiency and lifetime of the heat-generating electronic assembly.
In the use of gasket, pressure and temperature are mutually restricted, with the increase of temperature, after a period of equipment operation, the gasket material softens, creep, stress relaxation, mechanical strength will also decrease, and the pressure of the seal is reduced.
In the use of gasket, pressure and temperature are mutually restricted, with the increase of temperature, after a period of equipment operation, the gasket material softens, creep, stress relaxation, mechanical strength will also decrease, sealing pressure decreases. Vice versa.
General properties of silicone thermal pads:
1) It has good elasticity and recovery, and can adapt to pressure changes and temperature fluctuations;
2) It has appropriate softness and can fit well with the contact surface;
3) Do not pollute the process medium;
4) Have enough toughness without breaking the ring due to pressure and fastening force;
5) It does not harden at low temperature, and the shrinkage is small;
6) Good processing performance, easy installation and compression;
7) Non-adhesive sealing surface, easy to disassemble;
8) The cost is competitive and the service life is long.
Application areas of thermal pads:
aerospace, military and automotive electronic cooling and heating components, such as electronic devices, semiconductor storage devices, etc.;
General purpose inverters, medical equipment, DSC;
Automotive electronics, such as in-vehicle cameras, motor control units, car navigation, automotive lighting (LED);
laser HUD light source;
3C consumer goods and handheld electronic devices (such as mobile phones, tablets, computers, AR VR, etc.);
Base stations, chassis, IGBT modules. Collapsed.
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Thermally conductive silicone sheet is also called thermal pad, Born BN-FS800 is a kind of thermal interface material, which has a lot of anti-bending and chaotic applications in the application of thermal conductivity and heat dissipation of electronic products.
1. Power conversion alarm.
2. Communication field.
3. LED and lighting industry.
4. Automation equipment.
5. Consumer electronics.
Including PCB circuit board, thermal conductivity of tablet computer, thermal conductivity and heat dissipation of mobile phone, power supply and so on.
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Thermal conductive silicone sheet is mainly used in the field of digging stupidity, usually electronic products usually appear to heat up, and thermal pads are mainly used in the heat dissipation of these heating components to prevent high temperature damage to the Chang accompaniment.
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1. The role of thermally conductive silica gel sheet.
1) The main purpose of thermally conductive silica gel sheet is to reduce the contact thermal resistance generated between the surface of the heat source and the contact surface of the heat dissipation device.
2) The thermally conductive silica gel sheet only plays the role of thermal conduction, forming a good thermal conductivity path between the heating element and the heat dissipation device, and forming a heat dissipation module together with the heat sink and structural fixing parts (fans).
3) Thermally conductive silica gel sheet can fill the gap of the contact surface well and extrude the air out of the contact surface, air is a poor conductor of heat, which will seriously hinder the transfer of heat between the contact surfaces; With the supplement of thermally conductive silica gel sheet, the contact surface can be better fully contacted, and the face-to-face contact can be truly achieved, and the temperature reaction can reach as small a temperature difference as possible.
2. How to choose a thermally conductive silicone sheet?
Generally, before choosing a thermally conductive silica gel sheet, the following should be considered: electronic product structure, thermal conductivity, size, thickness, thermal resistance and expected results.
1) Product structure design selection.
In different requirements and use environment, the heat dissipation scheme is different, should be combined with the actual situation, choose the best heat dissipation scheme, in the structural design of electronic products should consider the thermal conductive silica gel sheet into the design problem, design a reasonable heat dissipation structure, so that the role of the thermal conductive silica gel sheet is maximized.
2) Selection of thermal conductivity of thermally conductive silica gel sheet.
The choice of thermal conductivity depends on the effect you expect to achieve, and the other depends on the power consumption of the heat source and the amount of heat dissipated by the design of the heat sink or heat dissipation structure. The thermal conductivity of the thermally conductive silica sheet is selected according to these needs. The cost of low thermal conductivity is relatively low, and the high thermal conductivity can have good effect and high cost.
3) Selection of the thickness of the thermally conductive silicone sheet.
This thickness should take into account the heat dissipation scheme used in the electronic product itself, if it is to choose heat dissipation structural parts, it is necessary to consider the morphological structure of the heat dissipation structural parts on the contact surface, and balance the design structure and the thickness selection of the thermal conductive silicone sheet. The thickness selection is also related to the hardness, density, compression ratio and other parameters of the product.
4) Selection of the size of the thermally conductive silicone sheet.
The best way to size the thermally conductive silicone sheet is to cover the heat source. Breakdown voltage, resistance, surface resistivity, etc. can be satisfied.
Translucent mold silica gel is mainly filled with fumed silica, white silica gel is mainly filled with calcium carbonate, silica powder, titanium dioxide, zinc oxide, part of which contains precipitation silica, due to the meteorological silica market ** is generally 30 yuan a kilogram, imports can reach more than 100, ordinary calcium carbonate filler 15-20 yuan is already good, the main difference between the two is that the filling ingredients are different, except that part of the translucent mold glue itself is added with color powder to become white. In terms of strength, the glue filled with silica is generally stronger, mainly because the silica particle size is relatively small, with a good reinforcing effect, and the glue filled with ordinary filler is mainly used to reduce costs. I'm a glue maker, so I can continue to ask if I don't understand.
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