CN109265735A - A kind of preparation method of conductive modified sponge - Google Patents
A kind of preparation method of conductive modified sponge Download PDFInfo
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- CN109265735A CN109265735A CN201811124136.8A CN201811124136A CN109265735A CN 109265735 A CN109265735 A CN 109265735A CN 201811124136 A CN201811124136 A CN 201811124136A CN 109265735 A CN109265735 A CN 109265735A
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- sponge
- conductive modified
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/36—After-treatment
- C08J9/40—Impregnation
- C08J9/405—Impregnation with polymerisable compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2329/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2329/02—Homopolymers or copolymers of unsaturated alcohols
- C08J2329/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
Abstract
The present invention relates to sponge material fields, and to solve the problem of that conductive sponge has preparation difficulty or there are generation environment pollution and hard brittleness in the prior art, the present invention provides a kind of preparation methods of conductive modified sponge.Preparation method includes following preparation step: 1) according to 100 parts by weight of sponge matrix, 30~45 parts by weight of conductive modified liquid, the ratio of 15~18.5 parts by weight of 3.5~4.2 parts by weight of buffer and promotor weighs each raw material and carries out ingredient；2) buffer is added into conductive modified liquid, then sponge matrix is placed in conductive modified liquid, warming-in-water is carried out to 45~65 DEG C to conductive modified liquid, promotor is then slowly added to, is dried to obtain conductive modified sponge after standing 2~6h.The present invention can carry out effective conductive treatment to conventional sponges by introducing conductive modified liquid, so that sponge has good electric conductivity, while elasticity and flexibility possessed by keeping sponge itself.
Description
Technical field
The present invention relates to sponge material field more particularly to a kind of conductive modified sponges.
Background technique
With the rapid development and improvement of living standard of modern science and technology, high-tech product is increasingly by the blueness of people
It looks at, has brought convenience in life and spiritual enjoyment, however the electromagnetic radiation generated therewith is also increasingly severe, prevents
The environmentally friendly topic that electromagnetic radiation also becomes more concerned at people, the method for the effective anti-electromagnetic radiation of most convenient are using electromagnetic screen
It covers, i.e., the propagation of electromagnetic radiation is obstructed by reflection effect and sink effect using conductive, magnetic property good metal mesh.It leads
Electric sponge is a kind of material for integrating conduction and electro-magnetic screen function, it is a kind of tridimensional network, has foam hole
Diameter uniformly, softness, high resilience, not furfur, and with the conductive effective phase it is long, shield effectiveness is good, and not by temperature and humidity
The features such as influence, sheet resistance value can be set by practical use, is widely used in computer, LCD display, LCD TV, swashs
Optical printer, high speed copier, communication apparatus, mobile phone, satellite communication, Medical Devices, high-pressure unit test, instrument,
Gasket/partition, plate electronic product, packaging of shockproof conduction etc..At present there are mainly two types of conductive sponge preparation methods, the first
It is that conductive agent is added during sponge foaming, keeps sponge conductive；Second is with polyester sponge or polyethers sponge
For matrix, after carrying out conductive treatment to matrix, then to the matrix plating metal of conductive treatment, make sponge that there is conduction
Property.The first preparation method cannot use on a large scale because technique manufacture is complicated, be presently mainly to use second
Kind preparation method, wherein conductive treatment mainly has chemical nickel plating or electroless copper and physical vapour deposition (PVD) in the preparation method
Then nickel metal or physical vapour deposition (PVD) copper metal carry out re-plating nickel after electronickelling or first electro-coppering, but second of preparation side
Method lacks there is also pollution environment and leads to the problem of hard brittleness.Therefore, preparing conductive sponge to low pollution and relative ease is
The a great problem of current conductive sponge manufacturing field.
Patent Office of the People's Republic of China discloses a kind of hair of the preparation method of coiled omnibearing electroconductive sponge on October 19th, 2011
Bright patent application, application notification number is CN102220614A, which employs vacuum PVD conductive nickel layer, then water
Plating, obtains conductive sponge by washing and drying.But use the method for vacuum PVD conductive nickel layer by vacuum item
The continuous consumption of part and target nickel metal once encounters water, oil in production process so that this layer of conductive nickel layer is extremely enervated
Mark, hand are touched, and be will lead to nickel layer and are fallen off, cause product defects；And this method, with the increase of matrix sponge thickness, plating is saturating
Property worse and worse, when sponge thickness be greater than 3.0mm when, physical vaporous deposition can not plate sponge.
Patent Office of the People's Republic of China also discloses a kind of patent of invention Shen of the preparation method of conductive sponge on July 24th, 2013
Please, application notification number be CN103215590A, with thickness no more than 10 millimeters polyester sponge or polyethers sponge coiled material or
Sheet material is substrate, and step includes chemical pretreatment, to the coated substrate carbonaceous conductive layer after chemical pretreatment, then carries out gas gas-phase objects
Reason deposited metal nickel or metallic copper, the substrate electronickelling to gas phase physical deposition nickel or copper obtain conduction after washing and drying
Sponge；Or the substrate elder generation electro-coppering to gas phase physical deposition nickel or copper, re-plating nickel, conductive sea is obtained after washing and drying
It is continuous.The present invention is environmental-friendly, and it is easy to fall off and lead to overcome film layer during direct physical vapour deposition (PVD) nickel metal or copper metal
Product defects are caused, the problem of substrate is incompletely plated due to thickness limitation is also overcomed.But carbonaceous conductive layer and gas phase physical deposition gold
Belong to conductive layer nickel and copper will lead to the elastic property decline of cavernous body, it is caused to generate hard brittleness.
Summary of the invention
For solution, conductive sponge is difficult in the presence of preparation in the prior art, or pollutes there are generation environment and ask with firmly brittle
Topic, the present invention provides a kind of preparation methods of conductive modified sponge.Its by introduce conductive modified liquid, can to conventional sponges into
The effective conductive treatment of row, so that sponge has good electric conductivity, while elasticity possessed by keeping sponge itself and soft
Toughness.
To achieve the above object, the invention adopts the following technical scheme:
A kind of preparation method of conductive modified sponge, the preparation method includes following preparation step:
1) according to 100 parts by weight of sponge matrix, 30~45 parts by weight of conductive modified liquid, 3.5~4.2 parts by weight of buffer and promotion
The ratio of 15~18.5 parts by weight of agent weighs each raw material and carries out ingredient；
2) buffer is added into conductive modified liquid, then sponge matrix is placed in conductive modified liquid, to conductive modified liquid into
Row warming-in-water is then slowly added to promotor to 45~65 DEG C, is dried to obtain conductive modified sponge after standing 2~6h.
Preferably, the step 1) blending process is according to 100 parts by weight of sponge matrix, 35~42 weight of conductive modified liquid
Part, the ratio of 15.5~17.5 parts by weight of 3.75~4.1 parts by weight of buffer and promotor weighs each raw material.
Preferably, the step 1) blending process is according to 100 parts by weight of sponge matrix, 35 parts by weight of conductive modified liquid,
The ratio of 15.75 parts by weight of 3.85 parts by weight of buffer and promotor weighs each raw material.
By, to processing is modified, keeping the same of sponge high resiliency and high-flexibility feature using conductive modified liquid
When, so that sponge has good electric conductivity.Buffer enables to sponge matrix to keep being modified during modification
The stability of liquid pH value, so that modifying process is more stable.Promotor can promote the quickening of modifying process, so that modification efficiency
It is higher.
Preferably, the step 1) sponge matrix is the organic polymer that material is hydroxyl.
The organic polymer of Han Qiang Ji has more good modified effect.
Preferably, the step 1) sponge matrix is polyvinylalcohol sponge.
Polyvinylalcohol sponge is a kind of existing and conventional sponge, and preparation is easy and cost is relatively low, with high-hydroscopicity
Feature, therefore have more preferably modified effect.
Preferably, step 1) conductive modified liquid pyrroles's aqueous solution.
Imine group contained by pyrroles in pyrroles's aqueous solution can form hydrogen between the hydroxyl of composite sponge matrix surface
Key makes it in composite sponge matrix surface in membranaceous growth, so that composite sponge matrix surface, which forms one layer, has electric conductivity
Film layer.
Preferably, the molar concentration of pyrroles is 1.75~2.0mol/L in step 1) pyrroles's aqueous solution.
Pyrroles's aqueous solution in the concentration range has excellent modified effect.
Preferably, the step 1) buffer is citric acid.
The addition of citric acid enables to solution system in modifying process to be in a weakly acidic state always, is conducive to
The growth of conductive film layer.
Preferably, it is liquor potassic permanganate that the step 1) rush is economical.
Potassium permanganate can promote pyrroles to be polymerized to polypyrrole, the i.e. ingredient of conductive film layer.
Preferably, the step 1) liquor potassic permanganate is the potassium permanganate solution of 4.5~5.5wt%.
The facilitation effect that potassium permanganate solution in the concentration range polymerize pyrroles is the most excellent.
The beneficial effects of the present invention are:
1) conductive modified sponge made from the method for the present invention has good conductive property；
2) conductive modified sponge made from the method for the present invention maintains good elastic property on the basis of having electric conductivity；
3) the method for the present invention can directly using existing polyvinylalcohol sponge as matrix prepare, raw material sources are extensive, cost compared with
It is low.
Specific embodiment
Further clear detailed description explanation is made to the present invention below in conjunction with specific embodiment.Ordinary skill
Personnel will realize the present invention based on these explanations.In addition, the reality of the invention being related in following the description
The embodiment that example is generally only a branch of the invention is applied, instead of all the embodiments.Therefore, based on the implementation in the present invention
Example, those of ordinary skill in the art's every other embodiment obtained without making creative work, is all answered
When belonging to the scope of protection of the invention.
Embodiment 1
A kind of preparation method of conductive modified sponge, the preparation method includes following preparation step:
1) according to 100 parts by weight of sponge matrix, 30 parts by weight of conductive modified liquid, 15 weight of 3.5 parts by weight of buffer and promotor
The ratio of part weighs each raw material and carries out ingredient, and wherein sponge matrix is polyvinylalcohol sponge, and conductive modified liquid is that molar concentration is
Pyrroles's aqueous solution of 1.75mol/L, buffer are citric acid, and promotor is the potassium permanganate solution of 4.5wt%；
2) buffer is added into conductive modified liquid, then sponge matrix is placed in conductive modified liquid, to conductive modified liquid into
Row warming-in-water is then slowly added to promotor to 45 DEG C, is dried to obtain conductive modified sponge after standing 6h.
Embodiment 2
A kind of preparation method of conductive modified sponge, the preparation method includes following preparation step:
1) according to 100 parts by weight of sponge matrix, 45 parts by weight of conductive modified liquid, 18.5 weight of 4.2 parts by weight of buffer and promotor
The ratio of amount part weighs each raw material and carries out ingredient, and wherein sponge matrix is polyvinylalcohol sponge, and conductive modified liquid is molar concentration
For pyrroles's aqueous solution of 2.0mol/L, buffer is citric acid, and promotor is the potassium permanganate solution of 5.5wt%；
2) buffer is added into conductive modified liquid, then sponge matrix is placed in conductive modified liquid, to conductive modified liquid into
Row warming-in-water is then slowly added to promotor to 65 DEG C, is dried to obtain conductive modified sponge after standing 2h.
Embodiment 3
A kind of preparation method of conductive modified sponge, the preparation method includes following preparation step:
1) according to 100 parts by weight of sponge matrix, 35 parts by weight of conductive modified liquid, 15.5 weight of 3.75 parts by weight of buffer and promotor
The ratio of amount part weighs each raw material and carries out ingredient, and wherein sponge matrix is polyvinylalcohol sponge, and conductive modified liquid is molar concentration
For pyrroles's aqueous solution of 2.0mol/L, buffer is citric acid, and promotor is the potassium permanganate solution of 5.5wt%；
2) buffer is added into conductive modified liquid, then sponge matrix is placed in conductive modified liquid, to conductive modified liquid into
Row warming-in-water is then slowly added to promotor to 55 DEG C, is dried to obtain conductive modified sponge after standing 4h.
Embodiment 4
A kind of preparation method of conductive modified sponge, the preparation method includes following preparation step:
1) according to 100 parts by weight of sponge matrix, 42 parts by weight of conductive modified liquid, 17.5 weight of 4.1 parts by weight of buffer and promotor
The ratio of amount part weighs each raw material and carries out ingredient, and wherein sponge matrix is polyvinylalcohol sponge, and conductive modified liquid is molar concentration
For pyrroles's aqueous solution of 1.75mol/L, buffer is citric acid, and promotor is the potassium permanganate solution of 4.5wt%；
2) buffer is added into conductive modified liquid, then sponge matrix is placed in conductive modified liquid, to conductive modified liquid into
Row warming-in-water is then slowly added to promotor to 55 DEG C, is dried to obtain conductive modified sponge after standing 6h.
Embodiment 5
A kind of preparation method of conductive modified sponge, the preparation method includes following preparation step:
1) according to 100 parts by weight of sponge matrix, 35 parts by weight of conductive modified liquid, 3.85 parts by weight of buffer and promotor 15.75
The ratio of parts by weight weighs each raw material and carries out ingredient, and wherein sponge matrix is polyvinylalcohol sponge, and conductive modified liquid is mole dense
Degree is pyrroles's aqueous solution of 1.85mol/L, and buffer is citric acid, and promotor is the potassium permanganate solution of 4.75wt%；
2) buffer is added into conductive modified liquid, then sponge matrix is placed in conductive modified liquid, to conductive modified liquid into
Row warming-in-water is then slowly added to promotor to 65 DEG C, is dried to obtain conductive modified sponge after standing 4h.
Conductive modified sponge obtained by Examples 1 to 5 is detected, partial detection is as shown in the table.
| Detection project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Water imbibition/% | ≥1200 | ≥1200 | ≥1200 | ≥1200 | ≥1200 |
| Tensile modulus of elasticity/MPa | ≥12 | ≥12 | ≥12 | ≥12 | ≥12 |
| Elongation at break/% | ≥230 | ≥230 | ≥230 | ≥230 | ≥230 |
| Sheet resistance (Ω) | ≤10 | ≤10 | ≤10 | ≤10 | ≤10 |
| Section vertical resistor (Ω) | ≤0.13 | ≤0.13 | ≤0.13 | ≤0.13 | ≤0.13 |
As upper table it will be evident that conductive modified sponge obtained by the method for the present invention has very good electric conductivity
And mechanical property.
Claims (10)
1. a kind of preparation method of conductive modified sponge, which is characterized in that the preparation method includes following preparation step:
1) according to 100 parts by weight of sponge matrix, 30~45 parts by weight of conductive modified liquid, 3.5~4.2 parts by weight of buffer and promotion
The ratio of 15~18.5 parts by weight of agent weighs each raw material and carries out ingredient；
2) buffer is added into conductive modified liquid, then sponge matrix is placed in conductive modified liquid, to conductive modified liquid into
Row warming-in-water is then slowly added to promotor to 45~65 DEG C, is dried to obtain conductive modified sponge after standing 2~6h.
2. a kind of preparation method of conductive modified sponge according to claim 1, which is characterized in that the step 1) ingredient
Process is according to 100 parts by weight of sponge matrix, 35~42 parts by weight of conductive modified liquid, 3.75~4.1 parts by weight of buffer and promotion
The ratio of 15.5~17.5 parts by weight of agent weighs each raw material.
3. a kind of preparation method of conductive modified sponge according to claim 1, which is characterized in that the step 1) ingredient
Process is according to 100 parts by weight of sponge matrix, 35 parts by weight of conductive modified liquid, 15.75 weight of 3.85 parts by weight of buffer and promotor
The ratio of amount part weighs each raw material.
4. a kind of preparation method of conductive modified sponge according to claim 1 or 2 or 3, which is characterized in that step 1) institute
Stating sponge matrix is the organic polymer that material is hydroxyl.
5. a kind of preparation method of conductive modified sponge according to claim 4, which is characterized in that the step 1) sponge
Matrix is polyvinylalcohol sponge.
6. a kind of preparation method of conductive modified sponge according to claim 1 or 2 or 3, which is characterized in that step 1) institute
State conductive modified liquid pyrroles's aqueous solution.
7. a kind of preparation method of conductive modified sponge according to claim 6, which is characterized in that the step 1) pyrroles
The molar concentration of pyrroles is 1.75~2.0mol/L in aqueous solution.
8. a kind of preparation method of conductive modified sponge according to claim 1 or 2 or 3, which is characterized in that step 1) institute
Stating buffer is citric acid.
9. a kind of preparation method of conductive modified sponge according to claim 1 or 2 or 3, which is characterized in that step 1) institute
It is liquor potassic permanganate that it is economical, which to state rush,.
10. a kind of preparation method of conductive modified sponge according to claim 9, which is characterized in that the step 1) height
Potassium manganate solution is the potassium permanganate solution of 4.5~5.5wt%.
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| CN201811124136.8A CN109265735A (en) | 2018-09-26 | 2018-09-26 | A kind of preparation method of conductive modified sponge |
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| CN201811124136.8A CN109265735A (en) | 2018-09-26 | 2018-09-26 | A kind of preparation method of conductive modified sponge |
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|---|---|---|---|---|
| US20070065586A1 (en) * | 2005-09-09 | 2007-03-22 | The Hong Kong Polytechnic University | Methods for coating conducting polymer |
| CN103215590A (en) * | 2013-04-11 | 2013-07-24 | 梧州三和新材料科技有限公司 | Preparation method of conductive sponges |
| CN105013335A (en) * | 2015-06-29 | 2015-11-04 | 天津工业大学 | Polymer conductive composite membrane and preparation method thereof |
| CN106188610A (en) * | 2016-07-11 | 2016-12-07 | 武汉纺织大学 | A kind of preparation method and application of polypyrrole/polyurethane sponge conducing composite material |
| CN106987020A (en) * | 2017-04-21 | 2017-07-28 | 唐林元 | A kind of preparation method of shielding conducting foam |
| CN108546340A (en) * | 2018-05-04 | 2018-09-18 | 南京恒新新材料有限公司 | A kind of conducting polymer inhales wave sponge and preparation method thereof |
-
2018
- 2018-09-26 CN CN201811124136.8A patent/CN109265735A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070065586A1 (en) * | 2005-09-09 | 2007-03-22 | The Hong Kong Polytechnic University | Methods for coating conducting polymer |
| CN103215590A (en) * | 2013-04-11 | 2013-07-24 | 梧州三和新材料科技有限公司 | Preparation method of conductive sponges |
| CN105013335A (en) * | 2015-06-29 | 2015-11-04 | 天津工业大学 | Polymer conductive composite membrane and preparation method thereof |
| CN106188610A (en) * | 2016-07-11 | 2016-12-07 | 武汉纺织大学 | A kind of preparation method and application of polypyrrole/polyurethane sponge conducing composite material |
| CN106987020A (en) * | 2017-04-21 | 2017-07-28 | 唐林元 | A kind of preparation method of shielding conducting foam |
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| Title |
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