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A kind of parabolic polyimide/silver composite film and preparation method thereof

A technology of polyimide and composite film, which is applied in textiles and papermaking, fiber treatment, fiber type, etc. It can solve the problems of high requirements for power supply equipment, high voltage, and affecting the normal operation of other equipment, and achieve excellent interface performance. Easy to form and not easy to crack

Active Publication Date: 2022-05-20
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method greatly improves the accuracy of the parabola, but the required voltage is extremely high, and the requirements for the power supply equipment are high, and the excessively strong electric field may affect the normal operation of other equipment

Method used

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  • A kind of parabolic polyimide/silver composite film and preparation method thereof
  • A kind of parabolic polyimide/silver composite film and preparation method thereof
  • A kind of parabolic polyimide/silver composite film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A. Using BTDA and ODA as a monomer to synthesize a polyamic acid solution with a solid content of 15wt% in DMAc, the curvature is 5m -1 A parabolic polyamic acid nanofiber membrane with a thickness of 50 μm is spun by electrospinning on a parabolic substrate;

[0031] B. Soak the nanofibrous membrane obtained in step A in 0.1M silver nitrate solution for 20min to carry out ion exchange, the consumption of soluble silver salt solution is 2g / cm 2 Polyamic acid nanofiber membrane, and the nanofiber membrane is micro-crosslinked under the induction of metal ions, and after washing and drying, a parabolic anchored polyamic acid network insoluble in DMAc is formed;

[0032] C. Mix the polyamic acid solution with a solid content of 12% and silver trifluoroacetylacetonate (AgTFA) according to the silver content of 13wt% and stir vigorously until uniform, and the parabolic anchored polyamic acid network obtained in step B flows upstream Extend into a film with a thickness of 30...

Embodiment 2

[0035] A. Using BTDA and ODA as a monomer to synthesize a polyamic acid solution with a solid content of 15wt% in DMAc, the curvature is 5m -1 A parabolic polyamic acid nanofiber membrane with a thickness of 10 μm is spun by electrospinning on a parabolic substrate;

[0036] B. Soak the nanofibrous membrane obtained in step A in 0.1M silver nitrate solution for 20min to carry out ion exchange, the consumption of soluble silver salt solution is 2g / cm 2 Polyamic acid nanofiber membrane, and the nanofiber membrane is micro-crosslinked under the induction of metal ions, and after washing and drying, a parabolic anchored polyamic acid network insoluble in DMAc is formed;

[0037] C. Mix the polyamic acid solution with a solid content of 12% and silver trifluoroacetylacetonate (AgTFA) according to the silver content of 13wt% and stir vigorously until uniform, and the parabolic anchored polyamic acid network obtained in step B flows upstream Extend into a film with a thickness of 30...

Embodiment 3

[0040] A. Using BTDA and ODA as a monomer to synthesize a polyamic acid solution with a solid content of 15wt% in DMAc, the curvature is 5m -1 A parabolic polyamic acid nanofiber membrane with a thickness of 10 μm is spun by electrospinning on a parabolic substrate;

[0041]B. Soak the nanofibrous membrane obtained in step A in 0.2M silver nitrate solution for 20min to carry out ion exchange, the consumption of soluble silver salt solution is 2g / cm 2 Polyamic acid nanofiber membrane, and the nanofiber membrane is micro-crosslinked under the induction of metal ions, and after washing and drying, a parabolic anchored polyamic acid network insoluble in DMAc is formed;

[0042] C. Mix the polyamic acid solution with a solid content of 12% and silver trifluoroacetylacetonate (AgTFA) according to the silver content of 13wt% and stir vigorously until uniform, and the parabolic anchored polyamic acid network obtained in step B flows upstream Extend into a film with a thickness of 300...

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Abstract

A kind of parabolic polyimide / silver composite thin film material, the nanofiber membrane in its matrix layer plays the effect of reinforcing fiber, so the overall thin film is not easy to crack, simultaneously the polyimide nanofiber membrane is in the silver layer and polyimide The amine layers play a riveting role to form a mechanical interlocking structure, which greatly improves the interface adhesion between the silver layer and the polyimide substrate, endows it with excellent interface properties, and retains the polyimide Excellent performance, and the controllable preparation of the thickness of the silver layer can be realized by adjusting the silver content. The preparation method of the film of the present invention is simple in implementation process and easy to meet the conditions, and the prepared polyimide / silver composite film material has excellent interface bonding performance, good mechanical properties, high silver utilization rate, and adjustable and controllable silver layer thickness The advantages.

Description

technical field [0001] The invention belongs to the field of polymer-metal composite materials, and relates to a method for preparing a parabolic polyimide / silver composite film. Background technique [0002] Surface silverized polyimide film is widely used in aviation due to its unparalleled reflectivity and electrical conductivity of the silver layer on the surface, coupled with the excellent thermal stability and physical and mechanical properties of the polyimide matrix itself, as well as the characteristics of light weight and high strength. Aerospace, microelectronics and other fields have a wide range of applications. The metallized parabolic film is an important part of the structure of the spaceborne antenna, which directly affects the electrical performance of the antenna, the shape of the antenna, and also plays a decisive role in the quality of the antenna, the cost, and the strength of the ability to adapt to the environment. role. [0003] The traditional for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/00D06N3/12D04H1/4334D04H1/728D04H1/76D06M11/65D06M101/30
CPCD06N3/0011D06N3/125D06N3/0063D06N3/0077D04H1/4334D04H1/728D04H1/76D06M11/65D06M2101/30
Inventor 齐胜利王希董南希田国峰武德珍
Owner BEIJING UNIV OF CHEM TECH
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