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usheenthermal
The thermal gap filling material is a new type of material that solves the heat transfer problem of equipment or electronic products. With the development of science and technology, the development trend of miniaturization, high integration, light and thin dexterity makes the product’s heat dissipation requirements higher, and the general direct Contact heat dissipation can no longer meet its heat dissipation requirements, so the emergence of thermal gap filling materials provides a solution to its heat conduction problem. There are many kinds of thermal gap filling materials, such as silicone thermal film, silicone oil-free thermal pad, thermal gel, thermal conductive silicone cloth, thermal grease, thermal phase change film, carbon fiber thermal pad, etc. Most of the thermal gap filling materials It is made with silicone oil as raw material. Of course, some products that are sensitive to silicone oil or require high operating environment require the use of heat-conducting materials that do not contain silicone oil.
Many electrical equipment and electronic instruments have a prescribed voltage. When current passes through a resistor, heat is generated. The heat is not easy to circulate inside, resulting in an increase in temperature and affecting the equipment. High temperature will cause temperature-sensitive semiconductors, electrolytic capacitors, and processors. When electronic components fail, the aging speed of materials will be accelerated under high-temperature environments, so heat needs to be directed to the outside to reduce the temperature of the equipment.
The use of electrical equipment is a process of energy conversion, and the conversion of electrical energy into target energy is often accompanied by loss, and most of the lost energy will be dissipated in the form of heat. The greater the power, the greater the amount of heat it emits. The more, the higher the requirements for heat dissipation. Mounting the radiator above the radiator can effectively reduce the temperature of the heat source, but there is a problem: there is a gap between the radiator and the heat source.
High temperature will cause temperature-sensitive semiconductors, electrolytic capacitors, processors, and other electronic components to malfunction, material aging speeds up, internal parts are prone to fire due to high temperatures, so timely heat dissipation is required, and the heat source of machinery and equipment is not the whole, but Similar to power consumption electronic components, it is necessary to install a radiator or heat sink above or near it to guide the heat to the outside, thereby reducing the temperature.
Contact between the radiator and the heat source surface is a common way to dissipate heat, but there is a gap between the radiator and the heat source surface. When the heat transfer from the heat source surface to the radiator is hindered, the heat dissipation effect is reduced, so thermally conductive gap fillers are required. There are many types of thermally conductive jointing materials, such as thermally conductive silicone sheet, thermally conductive silicone cloth, thermally conductive gel, thermally conductive silicone grease, non-silicone oil thermally conductive gasket, carbon fiber thermally conductive gasket, etc. Most of the raw materials of thermally conductive gap filler contain silicone oil. Therefore, it is impossible to avoid the precipitation of small siloxane molecules during use, which will affect the performance and service life of the product.
There are gaps in the direct contact between the radiator and the heat source. No matter how smooth the surface is and how strong the pressure is, there will still be gaps, so use thermally conductive gap fillers. Most of the thermal conductive materials on the market are made of silicone oil as raw materials, so it is inevitable that small siloxane molecules will precipitate during use. Some industries and products require thermal conductivity materials that do not precipitate small siloxane molecules due to equipment environmental conditions. -Non-silicone oil thermally conductive gasket.
Electricity-driven machinery and equipment, such as mobile phones, computers, smart watches, and electric cars, are flooding all aspects of people’s lives, and they will inevitably generate heat during operation. If the temperature continues to rise and not drop, it may Will cause damage to the equipment, so why is it hot? Theoretically, the conversion of energy is conserved, but in reality, under the resistance of many factors, the conversion of energy is accompanied by time loss. When electric energy is converted into other target energy, it is accompanied by the occurrence of heat generation. The simple understanding is that when current passes through the resistance, it will be generated. Heat, but the space in the equipment is narrow, the air circulation is not smooth, the heat is not easy to dissipate and accumulate in a local location, causing the local temperature of the equipment to rise.
The heat generated during the use of all kinds of electrical equipment is often encountered in life. High temperature will cause temperature-sensitive semiconductors, electrolytic capacitors and other components to accelerate material aging, increase internal mechanical stress and other problems, and may cause internal problems. The part catches fire, so why does the electrical equipment heat up when it is used? Electrical equipment is a kind of machinery and equipment driven by electrical energy, and when electrical energy is converted into other energy, it will be accompanied by loss. A large part of this part of energy is dissipated in the form of heat. This is also caused by the operation of electrical equipment. One of the causes of fever.
Heat-dissipating silicone sheet is a widely used material in thermally conductive filling materials. With its excellent thermal conductivity, it is accepted and applied by consumers. The heat-dissipating silicone sheet is made of silicone oil as the base material and added with a gap made of temperature-resistant and thermally conductive materials. The filled thermal pad has the characteristics of high thermal conductivity, low interface thermal resistance, insulation, compressibility, etc., because of its softer hardness, it can realize a smaller thermal resistance under low pressure conditions, and at the same time Eliminate the air between the contact surfaces and fully fill the rough surfaces between the contact surfaces to improve the heat conduction effect of the contact surfaces.
Heating of machinery and equipment is common, because when current flows through the resistor, heat is generated, and the internal heat of the device is not easy to circulate, which may easily cause local temperature rise. In order to ensure that the device can run for a long time, a heat dissipation module will be installed above the heat source. The heat is directed from the heat source to the heat dissipation module, thereby reducing the temperature.
Battery application and research is the main core of the current development of the times. It is the most widely used in the field of new energy, ranging from micro-robots to large space stations. There are battery applications. It can be said that the development of the battery industry is a sunrise industry today. Large and small batteries fill people’s lives and work, and people’s clothing, food, housing, and transportation are inseparable from their existence. While they provide power for machinery and equipment or electronic consumer products, they have many potential safety hazards, such as high temperature, fire, malfunction and malfunction. , The service life drops sharply, etc., among which high-temperature fire is the most deadly.
The core of a pure electric vehicle is its battery pack, and the battery generates a lot of heat during the driving process. If the temperature is not controlled in time, it will cause the car battery to run out of control, which will cause a chain reaction, and there are great safety risks. Therefore, battery heat is required. management. In pure electric vehicles, hybrid electric vehicles and other power systems that use batteries as the power source, battery thermal management mainly includes: air cooling, liquid cooling, thermoelectric cooling, heat pipe cooling, and phase change material thermal management. To put it simply, it is to monitor the temperature of the battery, including heating and heat dissipation, to ensure that the battery is in a suitable working environment and to ensure its performance and service life.
In order to ensure that the machinery and equipment can run for a long time, a radiator is usually installed above the power consumption components to guide the heat from the heat source to the radiator, so as to dissipate heat in time, so that the machinery and equipment can operate within a stable temperature range. There are gaps between the heat source and the radiator, and the air between the gaps will hinder the transfer of heat. Therefore, it is necessary to fill the heat transfer material between the two to remove the air at the interface, so that the heat can quickly pass through the heat transfer material to the radiator. Large machinery and equipment or some high-precision instruments require high voltages, and their internal voltages are often too high. Common heat-conducting materials are extremely easy to be ionized, so that the heat-conducting materials are broken down, and the heat-conducting materials make them work. Thermally conductive materials with breakdown voltage, such as heat dissipation insulators.
The heat of machinery and equipment is inevitable, because in reality there will be losses when electric energy is converted into other energy. A large part of this lost energy is dissipated to the outside in the form of heat. This is why heat is generated when current passes through the resistor. . The conductivity of heat in the air is low, and it is easy to accumulate inside the equipment and cannot be effectively dissipated to the outside, causing the internal temperature to rise, which affects the equipment.
Automated industrial production is the trend of the times. Most enterprises and factories have developed to a fully automated production model, which can not only improve production efficiency, but also reduce labor costs, and machine-produced products can effectively guarantee their quality, so fully automated Assembly line production is the main force of the future social production mode. Machinery and equipment can work 24/7, but there will be heat during the operation of machinery and equipment. If it is not effectively controlled, long-term high-temperature operation will cause damage to machinery and equipment. In severe cases, it may crash or even catch fire, so timely heat dissipation It is one of the keys to maintain long-term working of machinery and equipment.
Sheen Technology Co., Limited.
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Dongguan Sheen Electronic Technology Co., Ltd.
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