What are the applications of thermal sensitive materials, can you give an example

The application of thermal sensitive materials is very wide, covering industrial, medical, communications, electronic products and other fields. The following are some specific application examples of thermal sensitive materials:

1. Industrial sector

Temperature detection and control: Thermal sensitive materials can be used for temperature detection and control in industrial equipment, such as oven temperature control, heaters, etc. They monitor temperature changes in real time to ensure equipment is operating within the right temperature range, improving productivity and safety.

Thermal film: Used to measure temperature distribution in machines, equipment and processes to help improve production efficiency and quality. Thermal film usually consists of two layers of film, one layer is a heat-sensitive material, when heated to change color or chemical reaction; The other layer is a protective layer, which is used to protect the heat-sensitive material.

2. Medical field

Medical devices: Heat-sensitive materials have important applications in medical devices, such as thermometers. The thermal element in the thermometer can sense the temperature of the human body, convert the temperature information into an electrical signal for processing and display, and provide the doctor with accurate temperature data.

Thermal film: In the medical field, thermal film can be used to record the body's surface temperature distribution, helping doctors diagnose diseases and monitor outcomes. For example, by recording the temperature distribution of the patient's body surface, doctors can determine whether there is inflammation, blood circulation disorders and other problems.

3. Communications

Fiber optic connectors: Thermal sensitive materials can be used in fiber optic connectors to ensure the stability and reliability of the fiber optic connection when the temperature changes. Since optical fiber communication is very sensitive to temperature, the use of heat-sensitive materials to monitor and control temperature is essential to ensure the quality of communication.

4. Electronic products

Temperature sensing and control: In electronic products, thermal sensitive materials can be used for temperature sensing and control, such as the driver circuit of the display screen, the panel of the flat screen TV, etc. These electronic products generate heat during operation, and if the temperature is too high, it may cause damage to the equipment. Therefore, the use of heat-sensitive materials to monitor and control the temperature can ensure the normal operation of electronic products and extend the service life.

Thermistor: Thermistor is one of the commonly used thermal components in electronic products. It uses the property that the resistance of the material changes with the temperature to measure the temperature, and converts the temperature information into an electrical signal for processing. For example, in electronic temperature controllers, thermistors can be used as temperature sensing elements to sense changes in ambient temperature and control the operation of cooling or heating equipment.

Specific application case

Application of PTC thermistor in filament preheating: PTC thermistor can be used in various fluorescent lamp electronic ballasts and electronic energy-saving lamps. In the filament preheating circuit, the PTC thermistor is directly connected to both ends of the resonant capacitor of the lamp tube, the hard start of the electronic ballast and the electronic energy-saving lamp can be changed to the preheat start, and the life of the lamp tube can be extended.

The application of thermistor in the rice cooker: the magnetic steel temperature limit in the rice cooker makes use of the temperature characteristics of thermal ferrite. When the rice in the pot is done and the temperature at the bottom of the pot rises to a certain value, the thermal ferrite loses its magnetization characteristics, and the spring force will press down the permanent magnet and cut off the power supply, so as to realize the automatic heat preservation function.

In summary, thermal sensitive materials have a wide range of application values in various fields, they ensure the normal operation of equipment and extend the service life by sensing and controlling the temperature. With the continuous development and innovation of science and technology, the application field of thermal sensitive materials will continue to expand and deepen.