The preparation method of gold finger tape Physical and chemical properties

by:Yourijiu     2021-08-08

The preparation method of gold finger tape:

The preparation method of the film is that the polyamic acid solution is cast into a film, stretched, and then imidized at a high temperature. The film is yellow and transparent, and the relative density is 1.39~1.45. , It has outstanding high temperature resistance, radiation resistance, chemical corrosion resistance and electrical insulation properties. It can be used for a long time in the air at 250~280°C. The glass transition temperature is 280°C, 385°C and above 500°C, respectively, 20° The tensile strength at C is 200MPa, and at 200°C is greater than 100MPa. It is particularly suitable for use as a flexible printed circuit board substrate and various high-temperature resistant electrical and electrical insulation materials.


Physical properties of gold finger tape:

Thermosetting polyimide has excellent thermal stability, chemical resistance and mechanical resistance Performance, usually orange, the flexural strength of graphite or glass fiber reinforced polyimide can reach 345 MPa, and the flexural modulus can reach 20 GPa. Thermosetting polyimide has very small creep and high tensile strength , The use temperature range of polyimide covers a wide range, from minus one hundred degrees to two or three Baidu.


Chemical properties of gold finger tape

Polyimide is chemically stable. Polyimides do not need to add flame retardants to prevent combustion. General polyimides are resistant to chemical solvents such as hydrocarbons, esters, ethers, alcohols and chlorofluorocarbons. They are also resistant to weak acids but are not recommended for use. Used in strong alkali and inorganic acid environments, some polyimides such as CP1 and CORIN XLS are soluble in solvents. This property helps to develop their applications in spray coating and low-temperature crosslinking.

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