Carbon Fiber Heating Cable

Carbon fiber is a new type of high-performance fiber-reinforced material with excellent properties such as high strength, high modulus, high temperature resistance, wear resistance, fatigue resistance, corrosion resistance, creep resistance, conductivity, and thermal conductivity. It can reduce the weight of components, thereby improving their technical performance. Therefore, using carbon fiber as an electric heating element has many excellent properties that cannot be compared to metal, PTC and other electric heating elements: 1. Rapid heating up Capable of producing the life light required by the human body, far-infrared radiation ranging from 8 μ m to 15 μ m.   2. High efficiency of electric thermal conversion, saving energy Floor infrared heating wire is a type of all black body material, with an electric heating conversion efficiency that is 30% higher than metal heating, and an electric heating efficiency of about 100%.   3. High tensile strength Under the same allowable current load area, the strength of carbon fiber is 6-10 times higher than that of metal wire, and it will not break during use, so the tensile strength does not change much during the electric heating process.   4. No arcing due to broken wires Effectively prevent the occurrence of fires.   5. Lightweight Effectively reducing the weight of components, thereby improving their technical performance.   6. Stable chemical properties Corrosion resistant and not easily oxidized. When heated to 3000 degrees Celsius in an anaerobic state, its mechanical properties do not change, and it overcomes the limitations of metal wires in an electric heating state PTC、 The disadvantage of low strength and easy oxidation and burning of silicon carbide heating elements.   7. Long service life Carbon fiber electric heating wire have the same lifespan as buildings.

Temperature High temperature environment: Prolonged exposure to high temperatures can accelerate the aging of the insulation material of the electric heating wire. At the same time, high temperature will increase the resistance of the electric heating wire, which leads to more heat generation, further accelerating the damage of the electric heating wire and shortening its service life. Low temperature environment: Under low temperature conditions, the flexibility of the electric heating wire will decrease and become more prone to breakage. For example, for electric heating wires used outdoors in cold weather, if appropriate insulation measures are not taken, the insulation layer is prone to rupture when subjected to external tension or bending, thereby affecting the performance and service life of the electric heating wire. Humidity Frequent changes in humidity: Frequent changes in environmental humidity can cause the insulation material of the electric hotlines to expand and contract. For example, when the humidity increases, the insulation material absorbs moisture and expands; When the humidity decreases, it will lose water and shrink again. This repeated expansion and contraction can cause stress inside the insulation material, which over time can lead to cracks and delamination in the insulation material, damaging its insulation performance and affecting the service life of the electric heating wire. Chemical substances: In environments with corrosive chemicals such as acid, alkali, salt, etc., the metal wires and insulation materials of electric heating wires will be corroded. For example, acidic substances can react chemically with metal wires, causing rust and corrosion on the metal surface, resulting in a decrease in the conductivity of the wire and an increase in resistance. At the same time, corrosive substances can also damage the structure of insulation materials, making them fragile and losing their insulation protection function, thereby shortening the service life of electric heating wires. Mechanical stress: If the heating wire is in an environment that is susceptible to mechanical vibration, impact, or tension, it can cause damage to it. For example, in some industrial equipment, the electric heating wire may vibrate with the operation of the equipment, and long-term vibration can cause fatigue fracture of the wires inside the electric heating wire. In addition, when the electric heating wire is stretched or squeezed by external forces, it will cause deformation of the internal structure, resulting in poor contact between the wires, increased resistance, and thus affecting the heating effect and service life of the electric heating wire.

Carbon fiber endows its composite materials with excellent properties due to its inherent characteristics, including high specific strength, high specific modulus, high temperature resistance, corrosion resistance, fatigue resistance, creep resistance, conductivity, heat transfer, and low coefficient of thermal expansion. This provides the possibility and inevitability for its application in the wire and cable industry.   Development and Application of Carbon Fiber Heating Cable:   People have long known that electric heating technology using metal materials as heating elements has been widely applied in various fields. However, metal wires are prone to oxidation on the surface at high temperatures. Due to the continuous thickening of the oxide layer, the effective area for current flow decreases, increasing the current load and making them prone to burning out. Under the same allowable current load area, the strength of metal wire is 6-10 times lower than that of carbon fiber, and it is prone to breakage during use.   Carbon fiber is a hexagonal lattice layered structure composed of graphite, and is a fully black body material. Therefore, in electric heating applications, it exhibits high electric thermal conversion efficiency. Under specific conditions, high temperature does not oxidize, and the load intensity and mechanical strength per unit area of current do not change.   The current applications of carbon fiber heating cables are as follows:   Low temperature radiation heating cable floor heating system.   Thermal insulation heating for constant temperature brooding boxes, flower rooms, nurseries, vegetable greenhouses, etc. Road snow melting and airport runway snow melting: Ideal products for floor heating in concrete structures, can also be used in snow melting devices to prevent frost on roof rainwater and drainage pipes, and can be used for soil heating.   Pipeline and tank insulation and antifreeze: Electric heat tracing products have been widely promoted and applied in China in recent years. Its application areas mainly focus on petroleum, chemical, power, railway, and civil or commercial buildings. With the development of China's power industry, the market prospects for electric heat tracing products, which mainly rely on clean and pollution-free electricity, are very broad. At the same time, higher requirements have been put forward for the performance of electric heat tracing products.   Soil insulation for football fields, lawns, and public green spaces: Solar water heaters are designed to supplement heat energy when the water temperature of the solar water heater cannot meet the needs of daily life or engineering due to insufficient sunlight during long-term rainy or winter seasons. It has strong resistance to extreme heat, cold, and high temperature and humidity environments, and has the function of preventing dry burning. Even if the water tank is occasionally short of water and accidentally powered on, it will not burn out the electric heater and water tank, ensuring safe use.