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Radiation-resistant polyimide film insulating cable with high bonding strength and method for producing same

A polyimide film and insulated cable technology, which is applied in the direction of insulated cables, insulated conductors, organic insulators, etc., can solve the problems of large loss of mechanical strength, low temperature resistance of perfluoroethylene propylene, and poor radiation resistance. Achieve the effects of improving temperature resistance, high radiation resistance, high temperature resistance and radiation resistance

Active Publication Date: 2010-06-02
SHANGHAI ELECTRIC CABLE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing polyimide film wrapping wire generally adopts polyimide composite film coated with perfluoroethylene propylene. Although polyimide has excellent comprehensive properties, the perfluoroethylene propylene used as the bonding layer is temperature-resistant The grade is low, and can only be used in an environment below 200 ° C, and the loss of mechanical strength is greater when the temperature is higher than 200 ° C; the radiation resistance is poor, and the radiation dose reaches 10 3 Gy began to decline in performance, so the polyimide film wrapping wire using perfluoroethylene propylene as a binder is limited in the application of some high temperature and high radiation dose occasions.

Method used

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  • Radiation-resistant polyimide film insulating cable with high bonding strength and method for producing same
  • Radiation-resistant polyimide film insulating cable with high bonding strength and method for producing same
  • Radiation-resistant polyimide film insulating cable with high bonding strength and method for producing same

Examples

Experimental program
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Effect test

Embodiment 1

[0033] like figure 1 As shown, a layer of polyimide film 2 is first wrapped around the conductor 1, and then the adhesive 4 is applied. The adhesive 4 uses 1,2,4,5-benzenetetracarboxylic dianhydride / 3,3 - Diaminobenzophenone, and cured at 180°C for 5 minutes; then wrapping the second layer of film 3, and cured at 300°C for 10 minutes, so that the two layers of film are bonded together to form a high temperature resistant, radiation resistant Insulated cables.

Embodiment 2

[0035] First wrap a layer of polyimide film 2 around the conductor, and then apply adhesive 4, which uses 3,3',4,4'-biphenyltetracarboxylic dianhydride / 4,4 -Diphenyl ether diamine, and cured at 150°C for 10 minutes; then wrap the second layer of film 3, and perform the second coating, the coating is a polyimide protective layer 5, using 3, 3', 4,4'-benzophenonetetracarboxylic dianhydride / 3,3-diaminodiphenylmethane, and cured at 320°C for 10 minutes to bond the two layers of film together to form a high temperature and radiation resistant tape Sheathed insulated cables.

Embodiment 3

[0037] First wrap a layer of polyimide film 2 around the conductor, and then apply adhesive 4, which uses 3,3',4,4'-diphenyl ether tetracarboxylic dianhydride / 3,3 -diaminobenzophenone, and cured at 180°C for 5 minutes; then wrapped the second layer of film 3, and cured at 300°C for 10 minutes, so that the two layers of films are bonded together, The braided shielding layer 6 is silver-plated copper wire to form a shielded cable with continuous high temperature resistance, radiation resistance and high bonding strength.

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Abstract

The invention discloses a novel radiation-resistant polyimide film insulating cable with high bonding strength and a method for producing the same. The polyimide film insulating cable is produced by coating radiation-resistant and high-temperature resistant polyimide which is used as the binder on a winded polyimide film to carry out the semi-imidization for the binder, winding a second layer of polyimide film and carrying out postprocessing of solidification for the binder to form continous insulating layers. The polyimide film insulating cable has high temperature and radiation resisting performance and can be widely applied to the filed of the aviation, the aerospace, the nuclear power and the high-temperature electronic apparatus.

Description

technical field [0001] The invention belongs to the field of industrial cables, and in particular relates to a novel polyimide film insulated cable with radiation resistance and high bonding strength and a preparation method thereof. Background technique [0002] Polyimide film insulated wires and cables are widely used in aerospace, nuclear power and high temperature resistant electrical and electronic industries due to their excellent high and low temperature resistance, insulation performance, mechanical properties, especially excellent radiation resistance. The existing polyimide film wrapping wire generally adopts polyimide composite film coated with perfluoroethylene propylene. Although polyimide has excellent comprehensive properties, the perfluoroethylene propylene used as the bonding layer is temperature-resistant The grade is low, and can only be used in an environment below 200 ° C, and the loss of mechanical strength is greater when the temperature is higher than...

Claims

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Application Information

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IPC IPC(8): H01B7/00H01B7/02H01B7/28H01B3/30H01B13/08C09J177/06
Inventor 王新营严波黄一钊张敬平
Owner SHANGHAI ELECTRIC CABLE RES INST
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