Unlock instant, AI-driven research and patent intelligence for your innovation.

Paraboloid-shaped polyimide/silver composite film and preparation method thereof

A polyimide, composite film technology, applied in textiles and papermaking, fiber processing, fiber types, etc., can solve the problems of high requirements for power supply equipment, affecting the normal operation of other equipment, and high voltage, achieving excellent interface performance, easy to use. The effect of forming and improving the interface adhesion

Active Publication Date: 2021-08-17
BEIJING UNIV OF CHEM TECH
View PDF4 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Paraboloid-shaped polyimide/silver composite film and preparation method thereof
  • Paraboloid-shaped polyimide/silver composite film and preparation method thereof
  • Paraboloid-shaped 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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a paraboloid-shaped polyimide / silver composite film material. A nanofiber film in a matrix layer plays a role in reinforcing fibers, so that the whole film is not easy to crack; meanwhile, the polyimide nanofiber film plays a role in riveting between a silver layer and a polyimide layer to form a similar mechanical interlocking structure, so that the interface adhesion between the silver layer and a polyimide matrix is greatly improved, excellent interface performance is given, and the excellent performance of polyimide is reserved; and controllable preparation of the thickness of the silver layer can be achieved by regulating and controlling the silver content. The preparation method of the film is simple in implementation process, conditions are easy to meet, and the prepared polyimide / silver composite film material has the advantages of being excellent in interface adhesion performance, good in mechanical property, high in silver utilization rate and adjustable and controllable in silver layer thickness.

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
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