A kind of nano-graphite conductive thin film and preparation method thereof

A technology of nano-graphite sheet and conductive film, which is applied to the field of nano-graphite sheet conductive film and its production, can solve the problems of uncontrollable dispersion range and dispersion effect, easy agglomeration and difficult dispersion of carbon-based fillers, etc., and achieves dispersion range and dispersion effect. Accurate and controllable, good film forming effect and high forming efficiency

Active Publication Date: 2017-05-03
CHINA THREE GORGES UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Effectively solve the problems that carbon-based fillers are easy to agglomerate, difficult to disperse, poor uniformity, uncontrollable dispersion range and dispersion effect

Method used

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  • A kind of nano-graphite conductive thin film and preparation method thereof
  • A kind of nano-graphite conductive thin film and preparation method thereof
  • A kind of nano-graphite conductive thin film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1) Pretreatment of nano-graphite sheets

[0034] Prepare 100ml of absolute ethanol, put nano-graphite sheets into it, disperse for 40 minutes by ultrasonic dispersion, then stir at room temperature for 24 hours, filter the suspension, and wash repeatedly with absolute ethanol for 4-6 times, then place The obtained product was dried in an oven at 60° C. for 24 hours, taken out and sealed for use.

[0035] 2) Preparation of high temperature resistant separation membrane

[0036] According to the shape of the "honeycomb" conductive film to be prepared, prepare a high-temperature-resistant separation membrane with a size of 50×50mm, then scrub it with ethanol, dry it at room temperature, and then fix it on the tape casting device on the baseband.

[0037] 3) Preparation of substrate membrane material slurry

[0038] In terms of mass fraction, weigh 34 parts of phenolic resin, 3.0 parts of polyether siloxane copolymer, 2.0 parts of γ-glycidyl etheroxypropyl trimethoxysila...

Embodiment 2

[0044] 1) Pretreatment of nano-graphite sheets

[0045] Prepare 100ml of absolute ethanol, put nano-graphite sheets into it, disperse for 40 minutes by ultrasonic dispersion, then stir at room temperature for 24 hours, filter the suspension, and wash repeatedly with absolute ethanol for 4-6 times, then place The obtained product was dried in an oven at 60° C. for 24 hours, taken out and sealed for use.

[0046] 2) Preparation of high temperature resistant separation membrane

[0047] According to the shape of the "Chinese knot" conductive film to be prepared, prepare a high-temperature-resistant separation membrane with a size of 50×50mm, then scrub it with ethanol, dry it at room temperature, and then fix it on the tape-casting device with adhesive tape on the baseband.

[0048] 3) Preparation of substrate membrane material slurry

[0049] In terms of mass fraction, weigh 33 parts of epoxy resin, 3.0 parts of polyether siloxane copolymer, 3.0 parts of γ-glycidyl etheroxypr...

Embodiment 3

[0055] 1) Pretreatment of nano-graphite sheets

[0056] Prepare 100ml of absolute ethanol, put nano-graphite sheets into it, disperse for 40 minutes by ultrasonic dispersion, then stir at room temperature for 24 hours, filter the suspension, and wash repeatedly with absolute ethanol for 4-6 times, then place The obtained product was dried in an oven at 60° C. for 24 hours, taken out and sealed for use.

[0057] 2) Preparation of high temperature resistant separation membrane

[0058] According to the shape of the "heart-shaped" conductive film to be prepared, prepare a high-temperature-resistant separation membrane with a size of 50 × 50 mm, then wipe it with absolute ethanol, dry it at room temperature, and then fix it on the flow tube with adhesive tape. over the base tape of the die forming device.

[0059] 3) Preparation of substrate membrane material slurry

[0060] In terms of mass fractions, 35 parts of polyurethane, 2.0 parts of polyether siloxane copolymer, 3.0 par...

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Abstract

The present invention discloses a nano-graphite sheet conductive thin film and a preparation method therefor. The nano-graphite sheet conductive thin film is a composite conductive thin film, which uses a nano-graphite sheet as filler and a film-forming substance as a matrix film material. The preparation method comprises: firstly, uniformity mixing a diluent and an auxiliary agent with the film-forming substance to obtain a sizing agent of the matrix film material; then forming a film by using a tape-casting method; carrying out heating and drying to adjust the hardness of the matrix film material; then accurately inserting the nano-graphite sheet into the matrix film material by using a micro powder injection molding method; and carrying out heating and curing to obtain the nano-graphite sheet conductive thin film. According to the present invention, controllable preparation of the nano-graphite sheet conductive thin film can be achieved, the dispersion scope and effect of the nano-graphite sheet in the matrix film material are ensured, and the problem that unevenly dispersion of conductive filler is avoided. The prepared nano-graphite sheet conductive thin film has the advantages of being high in strength, hard to be damaged, randomly controllable in shape, stable in conductivity property and the like, and the conductive effect is significantly improved.

Description

technical field [0001] The invention relates to a conductive film containing carbon-based conductive fillers, in particular to a nano-graphite conductive film and a manufacturing method thereof. Background technique [0002] Conductive film is mainly used to conduct current and eliminate static electricity. The thickness is generally 0.1-1mm. It has important applications in many aspects such as antistatic, electromagnetic shielding, electric heating, anti-corrosion conduction, and electronic circuits. [0003] Conductive films can be divided into structural conductive films and composite conductive films according to their internal composition and conductive mechanism. Structural conductive film, because of its complex preparation process and difficult preparation, composite conductive film is widely used in practical applications; composite conductive film is made by passing organic or inorganic conductive fillers with conductive function through a certain process. The me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L61/06C08L63/00C08L75/04C08K3/04B29D7/01
Inventor 吴海华郭辉熊盼吴朝王从军
Owner CHINA THREE GORGES UNIV
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