CN104263276B - The preparation method of the high connductivity high tenacity graphite viscose glue of carbon nano-tube modification - Google Patents
The preparation method of the high connductivity high tenacity graphite viscose glue of carbon nano-tube modification Download PDFInfo
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- CN104263276B CN104263276B CN201410584453.3A CN201410584453A CN104263276B CN 104263276 B CN104263276 B CN 104263276B CN 201410584453 A CN201410584453 A CN 201410584453A CN 104263276 B CN104263276 B CN 104263276B
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Abstract
The invention discloses a kind of preparation method of the high connductivity high tenacity graphite viscose glue of carbon nano-tube modification, including step：Step 1, the hydrophilic radical in carbon nano tube surface chemical modification；Step 2, dispersant is dissolved in deionized water and obtains dispersant solution；CNT with hydrophilic radical is scattered in dispersant solution by step 3, obtains carbon nano tube dispersion liquid；Step 4, will take supernatant liquor after carbon nano tube dispersion liquid low-speed centrifugal, supernatant liquor is mixed with resin stoste, obtain the graphite viscose glue of carbon nano-tube modification.Graphite viscose glue of the present invention is used for prepare the gum dipping process of soft graphite grounding body, while graphite paper being improved with fiber adhesive force, is also remarkably improved the electric conductivity and pliability of composite graphite band.
Description
Technical field
The present invention relates to resin material technical field, more particularly to a kind of high connductivity high tenacity graphite of carbon nano-tube modification
The preparation method of viscose glue.
Background technology
Conducting resinl is mainly made up of resin matrix, conducting particles and dispersant, auxiliary agent etc..Matrix mainly includes asphalt mixtures modified by epoxy resin
Fat, acrylate, polyurethane etc..Although macromolecule this body structure of height conjugate type also has electric conductivity, such as big point
Sub- pyridine class formation etc., can pass through electronics or ionic conduction, but the electric conductivity of this kind of conducting resinl at most can only achieve semiconductor
Degree, it is impossible to low resistance as metal, it is difficult to play a part of to be conductively connected.Conduction currently used in the market
Glue is mostly packing type.
Conducting resinl requires that conducting particles itself will have good electric conductivity particle diameter can add in suitable scope
Conductive path is formed in conducting resinl matrix.Conventional conductive filler is usually gold, silver, copper, aluminium, zinc, iron, the powder of nickel and stone
Ink and some conductive compounds.However, in general conducting resinl the addition of conductive filler all more than 50%, this often leads to lead
The viscosity of the resin matrix of electric glue is increased considerably, and have impact on the mechanical performance of adhesive.
CNT can show metallic excellent electrical conductivity under certain ad hoc structure.Additionally, CNT
Also there is high intensity and great toughness, in theory 100 times for steel of tensile strength, nearly 2 times of carbon fiber, be to be at present
Specific strength only known to the mankind and specific stiffness highest material.And density is only the 1/6 of steel, and there is good pliability.
Expanded graphite Jing rolls the graphite paper to be formed, and forms graphite tape with the single rolling thermosetting after impregnation, for making
Make soft graphite grounding body.The glue adopted in gum dipping process, using thermosetting acrylic glue or phenolic resin etc., after thermosetting
Show high resistivity, many electrical conductivity that can affect grounding body of consumption, consumption have lacked the adhesive force that can affect graphite.
The content of the invention
For problems of the prior art, the invention provides a kind of high connductivity high tenacity stone of carbon nano-tube modification
The preparation method of black viscose glue, obtained graphite viscose glue is used for make the gum dipping process of soft graphite grounding body, graphite is being improved
While the adhesive force of paper and fiber, the electric conductivity and pliability of composite graphite band can be also improved.
To solve above-mentioned technical problem, the present invention is adopted the following technical scheme that：
The preparation method of the high connductivity high tenacity graphite viscose glue of carbon nano-tube modification, including step：
Step 1, the hydrophilic radical in carbon nano tube surface chemical modification；
Step 2, dispersant is dissolved in deionized water and obtains dispersant solution, wherein dispersant mass fraction be 0.4 ~
4%；
CNT with hydrophilic radical is scattered in dispersant solution by step 3, obtains carbon nano tube dispersion liquid, its
Middle carbon nanotube mass fraction is 2 ~ 10%；
Step 4, will take supernatant liquor after carbon nano tube dispersion liquid low-speed centrifugal, and supernatant liquor is pressed quality with resin stoste
Than（20~60）：100 mixing, obtain the graphite viscose glue of carbon nano-tube modification.
Preferably, CNT is multi-walled carbon nano-tubes.
Above-mentioned dispersant is lauryl sodium sulfate or neopelex.
Above-mentioned resin stoste is thermosetting acrylic glue or phenolic resin.
Using acidifying or purifying process hydrophilic radical in carbon nano tube surface chemical modification in step 1.
Dispersant is dissolved in by deionized water using stirring and sonic oscillation mode in step 2.
The CNT with hydrophilic radical is scattered in by dispersant solution using sonic oscillation mode in step 3.
Supernatant liquor is mixed with resin stoste using stirring and sonic oscillation mode in step 4.
Graphite viscose glue of the present invention can be used for the gum dipping process of graphite line, and graphite line can be used for graphite grounding body, and which specifically should
With for：Roll-in is carried out to worm graphite and makes myrmekite ink paper；Inorfil and metallic fiber surface are infiltrated into graphite of the present invention
Viscose glue, and be laid between two-layer worm graphite paper, Jing thermosettings, roll-in obtain composite graphite paper；Cut composite graphite paper to be answered
Graphite tape is closed, twisting is carried out to composite graphite band and is obtained low-resistivity graphite line.
Graphite viscose glue of the present invention is used for prepare the gum dipping process of soft graphite grounding body, improving, graphite paper is attached with fiber
While putting forth effort, the electric conductivity and pliability of composite graphite band are also remarkably improved.
Description of the drawings
Fig. 1 is graphite viscose preparation technology schematic diagram of the present invention.
Specific embodiment
When being embodied as, step of the present invention is as follows：
Step 1, the hydrophilic radical in carbon nano tube surface chemical modification.
Can be by technique hydrophilic radical, such as hydroxyl in carbon nano tube surface chemical modification such as acidifying or purifying.This step
Suddenly belong to routine techniques, therefore not to repeat here.
Step 2, prepares dispersant solution.
50ml deionized waters are weighed, dispersant, such as lauryl sodium sulfate, neopelex, dispersant is added
Quality for deionized water quality 0.4% ~ 4%；Coordinate ultrasonic vibration mode by dispersant uniform dissolution in deionization by stirring
In water.
Step 3, prepares carbon nano tube dispersion liquid.
The CNT for being modified with hydrophilic radical is dispersed in dispersant solution using supersonic oscillations mode,
Form carbon nano tube dispersion liquid, wherein carbon nanotube mass for deionized water quality 2% ~ 10%.
Step 4, prepares the graphite viscose glue of carbon nano-tube modification.
Supernatant liquor will be taken after carbon nano tube dispersion liquid low-speed centrifugal, will be upper using the method for ultrasonic oscillation cooperation stirring
Layer clear liquid is with resin stoste in mass ratio（20~60）：100 mixing, obtain the graphite viscose glue of carbon nano-tube modification.
The present invention is further illustrated below in conjunction with embodiment.
Embodiment 1
Take 50ml deionized waters, add that lauryl sodium sulfate is agitated and sonic oscillation prepares dispersant solution, to point
Add CNT in dispersant solution, 2 hours ultrasonic vibrations of Jing are prepared into carbon nano tube dispersion liquid, carbon nanotube mass for go from
The 10wt% of sub- water quality, 4wt% of the lauryl sodium sulfate quality for deionized water quality.By carbon nano tube dispersion liquid with
2000r/min speed low-speed centrifugal 20min, by supernatant liquor with acrylate substrate with mass ratio 60:After 100 ratio mixing
Agitated, ultrasonic vibration, obtains resistivity 2 × 103The high tenacity viscose glue of Ω m, elongation at break up to 700%；And former acrylate
The resistivity of matrix is 1 × 108Ω m, elongation at break about 300%, it can be seen that the electric conductivity and machinery of resin glue after doping
Performance is significantly enhanced.
Embodiment 2
Take 50ml deionized waters, add that lauryl sodium sulfate is agitated and sonic oscillation prepares dispersant solution, to point
Add CNT in dispersant solution, 5 hours ultrasonic vibrations of Jing are prepared into carbon nano tube dispersion liquid, carbon nanotube mass for go from
The 2wt% of sub- water quality, 0.4wt% of the lauryl sodium sulfate quality for deionized water quality.By carbon nano tube dispersion liquid with
2000r/min speed low-speed centrifugal 20min, by supernatant liquor and acrylate substrate in mass ratio 20:After 100 ratio mixing
Agitated, ultrasonic vibration, obtains resistivity 3 × 103The high tenacity viscose glue of Ω m, elongation at break up to 600%；And former acrylate
The resistivity of matrix is 1 × 108Ω m, elongation at break about 300%, it can be seen that the electric conductivity and machinery of resin glue after doping
Performance is significantly enhanced.
It is to illustrate this patent described in above-described embodiment, though illustrated by specific term in text, not
The protection domain that this patent can be limited with this, the personage for being familiar with this technical field can be right after the spirit of understanding this patent with principle
Which is changed or is changed and reach equivalent purpose, and this equivalent change and modification, should all be covered by right institute circle
Determine in category.
Claims (4)
1. the preparation method of the high connductivity high tenacity graphite viscose glue of carbon nano-tube modification, it is characterised in that including step：
Step 1, the hydrophilic radical in carbon nano tube surface chemical modification；
Step 2, dispersant is dissolved in deionized water and obtains dispersant solution, wherein dispersant mass fraction be 0.4～
4%；Described dispersant is lauryl sodium sulfate or neopelex；
CNT with hydrophilic radical is scattered in dispersant solution by step 3, obtains carbon nano tube dispersion liquid, wherein carbon
Nanotube quality fraction is 2～10%；
Step 4, will take supernatant liquor after carbon nano tube dispersion liquid low-speed centrifugal, by supernatant liquor with resin stoste in mass ratio
(20～60)：100 mixing, obtain the graphite viscose glue of carbon nano-tube modification；
Dispersant is dissolved in by deionized water using stirring and sonic oscillation mode in step 2；
The CNT with hydrophilic radical is scattered in by dispersant solution using sonic oscillation mode in step 3；
Supernatant liquor is mixed with resin stoste using stirring and sonic oscillation mode in step 4.
2. the preparation method of the high connductivity high tenacity graphite viscose glue of carbon nano-tube modification as claimed in claim 1, its feature exist
In：
Described CNT is multi-walled carbon nano-tubes.
3. the preparation method of the high connductivity high tenacity graphite viscose glue of carbon nano-tube modification as claimed in claim 1, its feature exist
In：
Using acidifying or purifying process hydrophilic radical in carbon nano tube surface chemical modification in step 1.
4. the preparation method of the high connductivity high tenacity graphite viscose glue of carbon nano-tube modification as claimed in claim 1, its feature exist
In：
Described resin stoste is thermosetting acrylic glue or phenolic resin.
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| CN110280151A (en) * | 2019-06-03 | 2019-09-27 | 扬州大学 | Super hydrophilic electrically conductive composite fibre film and its preparation method and application |
| CN113201297B (en) * | 2020-09-11 | 2022-09-06 | 广西电网有限责任公司桂林供电局 | Preparation method of conductive adhesive for graphite grounding material |
| CN114736631A (en) * | 2022-04-29 | 2022-07-12 | 浙江元盛塑业股份有限公司 | Preparation method of conductive adhesive |
| CN115386317A (en) * | 2022-08-16 | 2022-11-25 | 浙江工业大学 | Preparation method of high-thermal-conductivity and high-electrical-conductivity composite adhesive taking graphene and carbon nano tubes as fillers |
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| CN101663714B (en) * | 2007-02-20 | 2012-06-06 | 东丽株式会社 | Carbon nanotube assembly and electrically conductive film |
| JP5390881B2 (en) * | 2008-03-04 | 2014-01-15 | リンテック株式会社 | Adhesive composition and adhesive sheet |
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