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Polymer-matrix electric conduction gradient function material and preparation method thereof

A technology of gradient functional materials and functional materials, which is applied in the field of preparing polymer-based conductive gradient functional materials and polymer-based conductive gradient functional materials, can solve the problems of staying in the experimental stage and not suitable for preparing polymer membrane materials, etc. The effect of stable process, excellent mechanical properties and strong market competitiveness

Inactive Publication Date: 2010-05-12
BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, the preparation methods of gradient functional materials mainly include non-equilibrium swelling method, diffusion copolymerization method, free radical copolymerization method, melt extrusion method, electric field induction method, electrochemical method, temperature gradient method, fiber arrangement method, centrifugation method, etc. Although the methods have their own characteristics, most of them are still in the experimental stage, and the gradient materials prepared by some methods are not even continuous but step-like, which is still a long way from industrial application, and is not suitable for the preparation of polymers. membrane material.

Method used

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  • Polymer-matrix electric conduction gradient function material and preparation method thereof
  • Polymer-matrix electric conduction gradient function material and preparation method thereof
  • Polymer-matrix electric conduction gradient function material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Put 5g of ABS and 20ml of acetone in a three-necked flask with a stirring device, place it in a 40℃ water bath, and stir at a stirring speed of 50 rpm until the ABS is completely dissolved, then add 2.14g The brass powder was stirred for 10 minutes, and then the solution was drooled on a glass substrate soaked in acetone for 10 hours, and then the drooled glass plate was placed horizontally in a room with slow air circulation to dry naturally. After drying, it is peeled off from the glass plate to obtain the gradient conductive functional film material. Observe the section of the film with an optical microscope (e.g. figure 1 ), it is found that the Cu powder on the lower surface of the film material is the most, and it gradually decreases from bottom to top until there is almost no Cu powder on the surface, forming an obvious composition gradient; use the PC68 digital high resistance meter and the insulation test electrode box to test the upper and lower parts of the fil...

Embodiment 2

[0041] Put 5g PAN and 30ml dimethylformamide in a three-necked flask with a stirring device, place it in a water bath at 90°C, and stir at a stirring speed of 100 rpm until PAN is completely dissolved. At the same time, add 1.3 g of red copper and stir for 3 minutes, and then the solution was drooled on the glass substrate soaked in dimethylformamide for 24 hours, and then the drooled glass substrate was placed horizontally in an oven at 130°C for drying. After drying, it is peeled off from the glass plate to obtain the gradient conductive functional film material. Observe the section of the material with an optical microscope ( figure 2 ), it is obvious that the filler has a gradient distribution in the matrix. The resistivity test shows that the surface resistivity of the upper surface is ρs 1 =9.70×10 15 Ω, the surface resistivity of the lower surface ρs 2 =7.60×10 4 Ω, to achieve the gradient of conductivity.

Embodiment 3

[0043] Mix 3gPS and 2g ABS and put them into a three-necked flask containing 25ml of 1,2-dichloroethane. Under the condition of a water bath at 60℃, stir at a stirring speed of 70 rpm until the ABS and PS are completely dissolved. Add 2.14g of nickel and stir for 5min. Then the solution is drooled on the glass substrate soaked in 1,2-dichloroethane for 24h, and then the drooled glass substrate is placed horizontally in an oven at 65℃ to dry. The gradient conductive functional film material is obtained by peeling off the board. Optical microscope observation of material section ( image 3 ), it can be seen that the bottom surface of the film is rich in metal, and the surface is rich in base material, forming a certain gradient. The resistivity test shows that the surface resistivity of the upper surface is ρs 1 =3.35×10 15 Ω, the surface resistivity of the lower surface ρs 2 = 4.37×10 4 Ω, the resistivity of the upper and lower surfaces differs by 11 orders of magnitude, realizi...

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Abstract

The invention discloses a polymer-matrix electric conduction gradient function material and a preparation method thereof. The content of electric conduction filler in the prepared polymer-matrix electric conduction gradient function material shows continuous gradient change along the thickness direction of the material from low to high, and the performance also changes correspondingly. The preparation of the material mainly uses rheology principle to realize the gradient of distribution of material components by controlling and influencing thermodynamic factor and dynamic factor in the deposition process.

Description

Technical field [0001] The invention relates to a functional material, in particular to a polymer-based conductive gradient functional material, and a method for preparing a polymer-based conductive gradient functional material. Background technique [0002] In the 1980s, in order to take into account the strength and thermal protection of aerospace materials, Japan's Shinno Masaichi and others proposed a gradient combination of metal and heat-resistant ceramics, so that there is no obvious interface inside the material, so as to relieve the thermal stress inside the material This novel idea (Masoyuki Niino, Toshio Hirai, and Ryuzo Watanabe, Tilting functional materials-super heat-resistant materials for space machines を目指して[J]. Journal of the Society of Composite Materials, 1987, 13(6): 257- 264; M. Koizumi. FGM Activities in Japan. Composites Part B, 1997, 28(B): 1-4), which led to the research boom of functionally graded materials. Functionally Gradient Materials (FGM) is a n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L55/02C08L33/20C08L25/06C08K3/08C08K7/08C08K7/06C08K9/04C08J5/18
Inventor 温变英宦春花
Owner BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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