What are the advantages of polyimide film
Polyimide film is a high-performance organic polymer material with the following advantages:
1. Excellent high temperature resistance: Polyimide film has a high glass transition temperature and thermal decomposition temperature, and can be used for a long time in high temperature environments. Generally speaking, it can maintain good physical properties and chemical stability in the temperature r
Polyimide film is a high-performance organic polymer material with the following advantages:
1. Excellent high temperature resistance: Polyimide film has a high glass transition temperature and thermal decomposition temperature, and can be used for a long time in high temperature environments. Generally speaking, it can maintain good physical properties and chemical stability in the temperature range of 200 ℃ -300 ℃, and some high-performance polyimide films can even withstand higher temperatures, which gives it unique advantages in high-temperature applications such as aerospace, electronics and electrical.
2. Good mechanical properties: It has high strength and modulus, with tensile strength usually above 100MPa, and some even reaching 200MPa-300MPa. At the same time, it also has good flexibility and tear resistance. This excellent mechanical performance enables polyimide film to withstand large external forces in applications, is not easily damaged, and can be used to manufacture various components that require high strength and durability.
3. Outstanding electrical insulation performance: Polyimide film has excellent dielectric properties, with a dielectric constant generally between 3-4 and stable over a wide frequency range. It has high insulation resistance and a breakdown field strength of over 100kV/mm. It can effectively isolate current, prevent leakage and short circuit, and is an ideal insulation material in the field of electronics and electrical engineering. It is widely used for insulation protection of wires, cables, motors, transformers, etc.
4. Excellent chemical stability: It has good tolerance to most chemical reagents and is not easily corroded by acids, bases, organic solvents, etc. This characteristic enables polyimide films to maintain stable performance even in harsh chemical environments, making them suitable for manufacturing components that come into contact with various chemicals in the chemical industry, as well as packaging materials that require chemical corrosion resistance.
5. Low moisture absorption: The moisture absorption of polyimide film is relatively low, generally around 1% -3%. Low moisture absorption helps maintain its performance stability in humid environments, avoiding a decrease in the electrical and mechanical properties of materials due to moisture absorption. It also prevents size changes caused by moisture absorption, improving its reliability in precision instruments and electronic devices.
6. High transparency and good optical performance: Some polyimide films have high transparency, reaching over 90%, and have good optical uniformity and low birefringence characteristics. This makes it an important application in the field of optics, such as liquid crystal displays, organic light-emitting diode displays, etc. It can be used as a transparent substrate or optical compensation film, which can meet the strict requirements of optical devices for material optical performance.
7. Good radiation resistance: Polyimide film has good resistance to radiation such as gamma rays and electron beams, and its performance changes little after being exposed to radiation. This characteristic makes it widely used in fields with harsh radiation environments such as aerospace and nuclear industry, and can be used to manufacture radiation protection materials for electronic equipment and personnel.
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