CN106867157B - The polyaniline of conductive anti-corrosion function-fluoropolymer composite membrane and preparation method thereof - Google Patents

The polyaniline of conductive anti-corrosion function-fluoropolymer composite membrane and preparation method thereof Download PDF

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CN106867157B
CN106867157B CN201710172725.2A CN201710172725A CN106867157B CN 106867157 B CN106867157 B CN 106867157B CN 201710172725 A CN201710172725 A CN 201710172725A CN 106867157 B CN106867157 B CN 106867157B
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polyaniline
fluoropolymer
parts
composite membrane
powder
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CN106867157A (en
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张书香
刘乾
秦韵涵
张燕妮
王宁
吴奕男
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New Ji'nan Mstar Technology Ltd
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Abstract

The invention discloses a kind of polyaniline-fluoropolymer composite membranes and preparation method thereof of conductive anti-corrosion function, belong to functional material field.Polyaniline-fluoropolymer composite membrane of the conduction anti-corrosion function, is composed of the following components in parts by weight: 5-20 parts of aniline, 50-200 parts of fluoropolymer, 5-20 parts of dopant acid, 25-100 parts of initiator.Polyaniline prepared by the present invention-fluoropolymer composite membrane has the characteristics that high contact angle, acid-alkali-corrosive-resisting, conduction, easy to operate, environmentally protective using Electrostatic Spray Technology simultaneously, safety is endangered without chemical solvent, this technology can be used for the preparation of anti-electromagnetic shielding material, anti-static material, corrosion-resistant material.

Description

The polyaniline of conductive anti-corrosion function-fluoropolymer composite membrane and preparation method thereof
Technical field
The present invention relates to functional material fields, particularly relate to a kind of polyaniline-fluoropolymer of conductive anti-corrosion function Composite membrane and preparation method thereof.
Background technique
In general, conducting polymer (or conducting polymer) can be divided into following three classes according to its conductive principle: One is electronic conductive polymers；One is ionic conductive polymers；It is oxidation-reduction type conducting polymer that another kind, which belongs to,.It leads Electric type polyaniline belongs to electronic conductive polymer, and the common trait of this quasi polymer is that there is alternately on polymer backbone segment Singly-bound and double bond, so as to form linear conjugated n-electron main chain.Conductive polymer material causes extensively because of its special function General concern is widely used in electromagnetic shielding, antistatic, information storage and processing etc..And polyaniline is because it is with excellent Electrochemical properties, chemical stability it is good, have good market prospects, but electrically conductive polyaniline is not melted there is insoluble, with And the shortcomings that bad mechanical property, limit the extensive use of polyaniline technically.
In the actual production process, the surface of material must be subjected to the corrosion contaminations such as soda acid, and this pollution is for material Harm be it is quite serious, be easy to cause the damage of material even to destroy.We select one kind corrosion resistant thus Material carries out coating protection to substrate.
Summary of the invention
The technical problem to be solved in the present invention is to provide one kind to have high hydrophobic, acid and alkali-resistance rotten in metallic substrate surface Electrically conductive corrosion-resistant polyaniline-fluoropolymer composite membrane and its preparation method and application of erosion.
In order to solve the above technical problems, present invention offer technical solution is as follows:
On the one hand, a kind of polyaniline-fluoropolymer composite membrane of conductive anti-corrosion function is provided, by following parts by weight at It is grouped as: 5-20 parts of aniline, 50-200 parts of fluoropolymer, 5-20 parts of dopant acid, 25-100 parts of initiator.
Further, the polyaniline of the conductive anti-corrosion function-fluoropolymer composite membrane, by following parts by weight at It is grouped as: 5-10 parts of aniline, 50-100 parts of fluoropolymer, 10-20 parts of dopant acid, 25-60 parts of initiator.
Further, the fluoropolymer be tetrafluoroethene and ethylene copolymer, poly- perfluoro butyl ethyl propylene acid esters, One of poly- perfluoro butyl ethylmethyl acrylate, polytrifluorochloroethylene, polyacrylic acid trifluoro ethyl ester are a variety of.Fluorine-containing height Polymers due to it is intermolecular be with carbon-fluorine bond (C-F) be connected, fluorine element is the highest element of activity in nature.Due to fluorine element The special construction of electronic shell, making its electronegativity is that nature is highest, has extremely strong attraction to electronics, very easy to capture it He reaches saturated structures by the electronics of element.Fluorine element and nearly all element for being easy to lose electronics and reach rock-steady structure can Reaction.Various characteristics existing for fluorine element also determine the excellent properties that the substance of its composition has other elements not have, Such as water and oil repellant, stability it is good and generate stable compound be not easy to participate in other chemical reactions.
Since, there is extremely strong carbon-fluorine bond, bond energy is far longer than C-H bond, causes to allow in Organic fluoride macromolecule High molecular main chain is protected well.This is also that fluoropolymer has the reason of good " three high two hate " property, i.e. high durable Property, the characteristic of high-fire resistance, high stability and water and oil repellence.
Further, the dopant acid is dodecyl benzene sulfonic acid, five fluorine propionic acid, P-aminoazobenzene -4- sulfonic acid or right Toluenesulfonic acid.
Further, the initiator is potassium peroxydisulfate.
On the other hand, polyaniline-fluoropolymer composite membrane preparation method of above-mentioned conductive anti-corrosion function is provided, it is special Sign is, includes the following steps:
Step 1: aniline and dopant acid being dissolved in solvent and control 0-5 DEG C of reaction temperature, is vigorously stirred, initiation is slowly added dropwise Agent solution stands reaction 10-15h using washing, filtering, drying and obtains doping polyaniline powder；Pass through our legal system Standby polyaniline powder out has the fibre structure of 100 rans and the phenomenon that apparent particle agglomeration occurs, this phenomenon Show to have existed electrification phenomenon on the surface of polyaniline nanoparticles.
Step 2: the polyaniline powder after drying being mixed according to a certain percentage with fluoropolymer powder, in blender 15-30min is stirred, is mixed well.
Step 3: polyaniline obtained in step 2 and fluoropolymer-containing mixture being fitted into electrostatic spraying apparatus, opened Power supply is opened, mixed-powder is sprayed from spray equipment, and even application is on substrate；The electrostatic powder spraying device includes: High-voltage DC power supply, cylinder device, electrostatic gun and reception four parts of cylinder device.The output of high-voltage DC power supply used Voltage is 0-30kV；Cylinder device is suppressed by air compressor, and mixed-powder is driven to connect after electrostatic gun charges Rewinding wound packages put into substrate surface formed a strata aniline-fluoropolymer-containing composite membrane.Due to conventional electrostatic spraying It is all made of liquid spray, typically coating is dissolved into organic solvent, is suppressed using blackwash sprayer using air compressor, The coating of liquid is sprayed onto substrate surface using pressure, it is on the one hand complicated for operation, there are also being exactly that organic solvent is inflammable and explosive, exist Security risk, and not environmentally；Operation of the present invention is simple and easy to do, environmentally protective, the solvent-free pollution of safety.And use electrostatic spraying Technology can more allow polyaniline and fluoropolymer powder to mix and charge.
Step 4: above-mentioned substrate being placed in baking oven, electrically conductive polyaniline-fluoropolymer composite membrane is solidified into.
Wherein, in the step 2, polyaniline powder and fluoropolymer powder mixed proportion are 1:10-15.
Wherein, in the step 3, the voltage of electrostatic spraying apparatus is 10-20kV；In the step 4, cured temperature is 270-300℃。
Polyaniline-fluoropolymer composite membrane application of above-mentioned conduction anti-corrosion function, is used to prepare functional material.
Further, the functional material is anti-electromagnetic shielding material, anti-static material, corrosion-resistant material.
The invention has the following advantages:
In above scheme, synthesized polyaniline powder is in fibre structure, and the diameter of nanofiber is on 100 nanometers of left sides There is the protrusion of some 30-100 nanosizeds on the right side on the surface of fiber, and there are the reunions of nanosphere in the end of fiber Phenomenon；The composite membrane that polyaniline powder is prepared with fluoropolymer is placed on seven days intimal surfaces in strong acid aqueous slkali and has kept It is good；The adhesive force of coating is level-one；And the polyaniline-the thickness of fluoropolymer composite membrane on substrate surface can pass through Time of powder spray and fountain height are controlled, to meet the needs of for not having to property.
Using the Organic conductor of U.S.'s Bio-Rad FTS165 Fourier transformation infrared spectrometer characterization synthesis； The appearance form of polyaniline sample carries out observation with Japan's Hitachi company S-2500 type scanning electron microscope and takes pictures.
Detailed description of the invention
Fig. 1 is polyaniline infrared spectrogram prepared by the embodiment of the present invention 1；
Fig. 2 is the stereoscan photograph of polyaniline prepared by the embodiment of the present invention 1；
Fig. 3 is polyaniline-fluoropolymer composite membrane adhesive force photo prepared by the embodiment of the present invention 1；
Fig. 4 is that polyaniline-fluoropolymer composite membrane prepared by the embodiment of the present invention 1 shines the static contact angle of water Piece.
Specific embodiment
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool Body embodiment is described in detail.
The present invention aiming at the problem that metal base is easily damaged by corrosion in the prior art, provide it is a kind of have high hydrophobic, Electrically conductive corrosion-resistant polyaniline-fluoropolymer composite membrane of acid-alkali-corrosive-resisting and its preparation method and application.
Embodiment 1:
The polyaniline of conductive anti-corrosion function-fluoropolymer composite membrane, is composed of the following components in parts by weight: 5 parts of aniline, 200 parts of polytrifluorochloroethylene, five 10 parts of fluorine propionic acid, 25 parts of potassium peroxydisulfate.
The compound membrane preparation method of polyaniline-fluoropolymer of conductive anti-corrosion function, includes the following steps:
Step 1: 50 parts of mistake will be weighed in the distilled water solution for being dissolved in 1000 parts of 25 parts by weight potassium peroxydisulfate of initiator In the aqueous solution and constant pressure funnel of potassium sulfate；Five fluorine propionic acid of the aniline of 5 parts by weight and 10 parts by weight are dissolved in distilled water In, reaction temperature is controlled at 0 DEG C, after being vigorously stirred 30min, persulfate aqueous solution is started to be slowly dropped to aniline miscible fluid In, after dripping, reaction 12h is stood, doped polyaniline is obtained after reaction, by washing, filtering, drying, is mixed Miscellaneous state polyaniline powder.
Step 2: doping polyaniline powder and polytrifluorochloroethylene powder being mixed according to the ratio of 1:12, in blender It is mixed well in middle stirring 30min, obtains polyaniline-fluoropolymer powder.
Step 3: the powder of electrically conductive polyaniline-polytrifluorochloroethylene obtained in step 2) is packed into electrostatic spraying apparatus In, the substrate of film forming is put into powder spray bucket, power supply is opened.The voltage of spraying is adjusted in 20kV, mixed-powder is from spraying It is sprayed in device and the static electrification at gun slot will have electrically conductive polyaniline-polytrifluorochloroethylene powder after substrate surface spray is even The substrate at end is put into baking oven, and electrically conductive polyaniline-fluoropolymer composite membrane is solidified at 285 DEG C.
Embodiment 2:
The polyaniline of conductive anti-corrosion function-fluoropolymer composite membrane, is composed of the following components in parts by weight: aniline 10 Part, tetrafluoroethene with 150 parts of ethylene copolymer, 20 parts of dodecyl benzene sulfonic acid, 50 parts of potassium peroxydisulfate.
The compound membrane preparation method of polyaniline-fluoropolymer of conductive anti-corrosion function, includes the following steps:
1) potassium peroxydisulfate of 50 parts by weight of initiator is dissolved in and weighs 50 parts of persulfuric acid in 1000 parts of distilled water solution In the aqueous solution and constant pressure funnel of potassium；The dodecyl benzene sulfonic acid of the aniline of 10 parts by weight and 20 parts by weight is dissolved in distillation In water, reaction temperature is controlled at 5 DEG C, after being vigorously stirred 30min, starts the persulfate aqueous solution to be slowly dropped to aniline miscible In liquid, after dripping, reaction 12h is stood, doped polyaniline is obtained after reaction, by washing, filtering, drying, obtains Doping polyaniline powder.
2) doping polyaniline powder and tetrafluoroethene and ethylene copolymer powders are mixed according to the ratio of 1:10, is being stirred It mixes to stir in device and be mixed well in 30min, obtain polyaniline-fluoropolymer powder.
3) powder of the electrically conductive polyaniline-tetrafluoroethene and ethylene copolymer produced in step 2) is packed into existing electrostatic In spray equipment, the substrate of film forming is put into powder spray bucket, opens power supply.The voltage of spraying is adjusted in 20kV, mixed powder End will have electrically conductive polyaniline-tetrafluoro second after substrate surface spray is even from ejection and the static electrification at gun slot in spray equipment Alkene and the substrate of ethylene copolymer powders are put into baking oven, and electrically conductive polyaniline-tetrafluoroethylene-Ethylene copolymerization is solidified at 270 DEG C Object composite membrane.
Embodiment 3
The polyaniline of conductive anti-corrosion function-fluoropolymer composite membrane, is composed of the following components in parts by weight: aniline 15 Part, 100 parts of polytrifluorochloroethylene, tetrafluoroethene with 100 parts of ethylene copolymer, 20 parts of P-aminoazobenzene -4- sulfonic acid, persulfuric acid 45 parts of potassium.
The compound membrane preparation method of polyaniline-fluoropolymer of conductive anti-corrosion function, includes the following steps:
1) potassium peroxydisulfate of 45 parts by weight of initiator is dissolved in and weighs 50 parts of persulfuric acid in 1000 parts of distilled water solution In the aqueous solution and constant pressure funnel of potassium；P-aminoazobenzene -4- the sulfonic acid of the aniline of 15 parts by weight and 20 parts by weight is molten In distilled water, reaction temperature is controlled at 5 DEG C, after being vigorously stirred 30min, persulfate aqueous solution is started to be slowly dropped to polyphenyl In amine aqueous solution, after dripping, reaction 12h is stood, obtains doped polyaniline after reaction, by washing, filtering, drying, Obtain doping polyaniline powder.
2) by doping polyaniline powder and tetrafluoroethene and ethylene copolymer powders and polytrifluorochloroethylene according to 1:5: 10 ratio mixing, stirs in blender and mixes well in 30min, obtain polyaniline-fluoropolymer powder.
3) the fluoropolymer-containing powder of the electrically conductive polyaniline-produced in step 2) is packed into existing electrostatic spraying apparatus In, the substrate of film forming is put into powder spray bucket, power supply is opened.The voltage of spraying is adjusted in 10kV, mixed-powder is from spraying It is sprayed in device and the static electrification at gun slot will have electrically conductive polyaniline-fluoropolymer powder after substrate surface spray is even Substrate be put into baking oven, electrically conductive polyaniline-fluoropolymer composite membrane is solidified at 300 DEG C.
Embodiment 4
The polyaniline of electric protection function-fluoropolymer composite membrane, is composed of the following components in parts by weight: 5 parts of aniline, gathering 200 parts of perfluoro butyl ethylmethyl acrylate, five 10 parts of fluorine propionic acid, 30 parts of potassium peroxydisulfate.
The compound membrane preparation method of polyaniline-fluoropolymer of conductive anti-corrosion function, includes the following steps:
Step 1: 50 parts of mistake will be weighed in the distilled water solution for being dissolved in 1000 parts of 25 parts by weight potassium peroxydisulfate of initiator In the aqueous solution and constant pressure funnel of potassium sulfate；Five fluorine propionic acid of the aniline of 5 parts by weight and 10 parts by weight are dissolved in distilled water In, reaction temperature is controlled at 0 DEG C, after being vigorously stirred 30min, persulfate aqueous solution is started to be slowly dropped to aniline miscible fluid In, after dripping, reaction 12h is stood, doped polyaniline is obtained after reaction, by washing, filtering, drying, is mixed Miscellaneous state polyaniline powder.
Step 2: doping polyaniline powder and poly- perfluoro butyl ethylmethyl acrylate are mixed according to the ratio of 1:12 It closes, stirs in blender and mixed well in 30min, obtain polyaniline-fluoropolymer powder.
Step 3: the powder of electrically conductive polyaniline-polytrifluorochloroethylene obtained in step 2) is packed into electrostatic spraying apparatus In, the substrate of film forming is put into powder spray bucket, power supply is opened.The voltage of spraying is adjusted in 20kV, mixed-powder is from spraying It is sprayed in device and the static electrification at gun slot will have electrically conductive polyaniline-polytrifluorochloroethylene powder after substrate surface spray is even The substrate at end is put into baking oven, and electrically conductive polyaniline-fluoropolymer composite membrane is solidified at 285 DEG C.
Embodiment 5
The polyaniline of conductive anti-corrosion function-fluoropolymer composite membrane, is composed of the following components in parts by weight: aniline 15 Part, poly- 100 parts of perfluoro butyl ethyl propylene acid esters, tetrafluoroethene with 100 parts of ethylene copolymer, P-aminoazobenzene -4- sulfonic acid 20 parts, 60 parts of potassium peroxydisulfate.
The compound membrane preparation method of polyaniline-fluoropolymer of conductive anti-corrosion function, includes the following steps:
1) potassium peroxydisulfate of 45 parts by weight of initiator is dissolved in and weighs 50 parts of persulfuric acid in 1000 parts of distilled water solution In the aqueous solution and constant pressure funnel of potassium；P-aminoazobenzene -4- the sulfonic acid of the aniline of 15 parts by weight and 20 parts by weight is molten In distilled water, reaction temperature is controlled at 5 DEG C, after being vigorously stirred 30min, persulfate aqueous solution is started to be slowly dropped to polyphenyl In amine aqueous solution, after dripping, reaction 12h is stood, obtains doped polyaniline after reaction, by washing, filtering, drying, Obtain doping polyaniline powder.
2) by doping polyaniline powder and tetrafluoroethene and ethylene copolymer powders and poly- perfluoro butyl ethylacrylic acid Ester is mixed according to the ratio of 1:7:8, is stirred in blender and is mixed well in 30min, obtains polyaniline-fluoropolymer powder End.
3) the fluoropolymer-containing powder of the electrically conductive polyaniline-produced in step 2) is packed into existing electrostatic spraying apparatus In, the substrate of film forming is put into powder spray bucket, power supply is opened.The voltage of spraying is adjusted in 10kV, mixed-powder is from spraying It is sprayed in device and the static electrification at gun slot will have electrically conductive polyaniline-fluoropolymer powder after substrate surface spray is even Substrate be put into baking oven, electrically conductive polyaniline-fluoropolymer composite membrane is solidified at 300 DEG C.
Embodiment 6
The polyaniline of conductive anti-corrosion function-fluoropolymer composite membrane, is composed of the following components in parts by weight: aniline 15 Part, 60 parts of polytrifluorochloroethylene, 60 parts of polyacrylic acid trifluoro ethyl ester, 60 parts of poly- perfluoro butyl ethylmethyl acrylate, to ammonia 20 parts of base azobenzene-, 45 parts of potassium peroxydisulfate.
The compound membrane preparation method of polyaniline-fluoropolymer of conductive anti-corrosion function, includes the following steps:
1) potassium peroxydisulfate of 45 parts by weight of initiator is dissolved in and weighs 50 parts of persulfuric acid in 1000 parts of distilled water solution In the aqueous solution and constant pressure funnel of potassium；P-aminoazobenzene -4- the sulfonic acid of the aniline of 15 parts by weight and 20 parts by weight is molten In distilled water, reaction temperature is controlled at 5 DEG C, after being vigorously stirred 30min, persulfate aqueous solution is started to be slowly dropped to polyphenyl In amine aqueous solution, after dripping, reaction 12h is stood, obtains doped polyaniline after reaction, by washing, filtering, drying, Obtain doping polyaniline powder.
2) by doping polyaniline powder and polyacrylic acid trifluoro ethyl ester, polytrifluorochloroethylene and poly- perfluoro butyl ethyl first Base acrylate is mixed according to the ratio of 1:5:5:5, is stirred in blender and is mixed well in 30min, it is fluorine-containing to obtain polyaniline- Polymer powder.
3) the fluoropolymer-containing powder of the electrically conductive polyaniline-produced in step 2) is packed into existing electrostatic spraying apparatus In, the substrate of film forming is put into powder spray bucket, power supply is opened.The voltage of spraying is adjusted in 15kV, mixed-powder is from spraying It is sprayed in device and the static electrification at gun slot will have electrically conductive polyaniline-fluoropolymer powder after substrate surface spray is even Substrate be put into baking oven, electrically conductive polyaniline-fluoropolymer composite membrane is solidified at 300 DEG C.
Since length is limited, beneficial effect in order to further illustrate the present invention, it is related right only to construct by taking embodiment 1 as an example Ratio.
Comparative example 1:
In the comparative example, prepared polyaniline-fluoropolymer composite membrane, fluoropolymer is polytetrafluoroethylene (PTFE), His component and preparation method are same as Example 1.
Comparative example 2:
In the comparative example, prepared polyaniline-fluoropolymer composite membrane, fluoropolymer is Kynoar, His component and preparation method are same as Example 1.
Comparative example 3:
In the comparative example, prepared polyaniline film does not contain fluoropolymer, other components and preparation method with Embodiment 1 is identical.
There is cracking pulverized state in the polyaniline film prepared, does not meet relevant criterion.
Examples 1 to 6 and comparative example 1~3 are carried out Contact-angle measurement and spray by effect in order to further illustrate the present invention Moisture grade tests hydrophobicity, the paint adhesion, resistance to highly acid of composite membrane.
Contact-angle measurement and water spray classification are tested all in accordance in DL/T810-2012 and DL/T810-2002 about hydrophobicity Method and steps.Contact angle is tested using full-automatic contact angle tester, and micro syringe when test will test water droplet In coating surface, droplet size is 3 μ l, and five different zones of same coating is selected to test its contact angle respectively, and is calculated average Value, respectively obtains the contact angle of coating.Water injector should be able to have preferable atomizing effect, each amount of water sprayed in water spray test 0.7~1ml, sprinkler nozzle distance sample 25cm, water spray 1 time, totally 25 times per second.Water spray rank value should spray 25 seconds in It completes.
Using QFZ- type adhesion tester of lacquer film, measured according to " paint film adhesion measuring method " GB/T1720-79 (89) The adhesive force of film.
The substrate for being coated with above-mentioned composite membrane is respectively placed in the aqueous hydrochloric acid solution of 0.1mol/L and the hydrogen-oxygen of 0.1mol/L Change in sodium water solution, observes 7 days, measure the resistance to acid and alkali of film.Related performance indicators are shown in Table 1:
Table 1
Fig. 1-Fig. 4 is polyaniline-fluoropolymer composite membrane index of correlation prepared by the embodiment of the present invention 1, such as Fig. 1 Shown in polyaniline infrared tube spectrogram, in 3200cm-1It is the vibration absorption peak of N-H key, in 1495cm-1And 1144cm-1And 890cm-1Place is the vibration absorption peak of phenyl ring；As shown in figure 3, adhesive force is measured using QFZ-II adherometer scratch, Intact all whole circles are level-one, other ranks are unqualified；As shown in figure 4, polyaniline-fluoropolymer prepared by embodiment 1 Composite membrane is 125 ° to the static contact angle of water.
Embodiment 1-6 hydrophobicity with higher in the present invention, even if in the environment of strong acid and strong base, excellent corrosion Good, paint adhesion is level-one.And the present invention very cleverly uses electrostatic spraying technology for powder paints, and having prepared has conduction Etch-proof polyaniline-fluoropolymer composite membrane, this method can be operated under any temperature strip part, and a whole set of dress It is simple to set installation, easy to operate, at low cost, repeatability is strong, prepared by the large-scale production suitable for such composite membrane, has Vast market prospect.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications It should be regarded as protection scope of the present invention.

Claims (8)

1. a kind of polyaniline-fluoropolymer composite membrane of conduction anti-corrosion function, which is characterized in that by the ingredient of following parts by weight Composition: 5-20 parts of aniline, 50-200 parts of fluoropolymer, 5-20 parts of dopant acid, 25-100 parts of initiator；
The fluoropolymer is tetrafluoroethene and ethylene copolymer, poly- perfluoro butyl ethyl propylene acid esters, poly- perfluoro butyl second One of methyl acrylate, polytrifluorochloroethylene, polyacrylic acid trifluoro ethyl ester are a variety of；
The dopant acid is dodecyl benzene sulfonic acid, five fluorine propionic acid, P-aminoazobenzene -4- sulfonic acid or p-methyl benzenesulfonic acid；
The polyaniline-fluoropolymer composite membrane is prepared by the following method:
Step 1: by 0-5 DEG C of reaction temperature of aniline and dopant acid control soluble in water, being vigorously stirred, initiator is slowly added dropwise Solution stands reaction 10-15h using washing, filtering, drying and obtains doping polyaniline powder；
Step 2: doping polyaniline powder being mixed according to a certain percentage with fluoropolymer powder, is stirred in blender 15-30min is mixed well；
Step 3: polyaniline obtained in step 2 and fluoropolymer-containing mixture being fitted into electrostatic spraying apparatus, electricity is opened Source, mixed-powder are sprayed from spray equipment, and even application is on substrate；
Step 4: above-mentioned substrate being placed in baking oven, electrically conductive polyaniline-fluoropolymer composite membrane is solidified into.
2. polyaniline-fluoropolymer composite membrane of conduction anti-corrosion function according to claim 1, which is characterized in that by Following parts by weight at being grouped as: 5-10 parts of aniline, 50-100 parts of fluoropolymer, 10-20 parts of dopant acid, initiator 25-60 Part.
3. polyaniline-fluoropolymer composite membrane of conduction anti-corrosion function according to claim 1 or 2, which is characterized in that The initiator is potassium peroxydisulfate.
4. polyaniline-fluoropolymer composite membrane preparation method of any conductive anti-corrosion function of claim 1-3, It is characterized in that, includes the following steps:
Step 1: by 0-5 DEG C of reaction temperature of aniline and dopant acid control soluble in water, being vigorously stirred, it is molten that initiator is slowly added dropwise Liquid stands reaction 10-15h using washing, filtering, drying and obtains doping polyaniline powder；
Step 2: doping polyaniline powder being mixed according to a certain percentage with fluoropolymer powder, is stirred in blender 15-30min is mixed well；
Step 3: polyaniline obtained in step 2 and fluoropolymer-containing mixture being fitted into electrostatic spraying apparatus, electricity is opened Source, mixed-powder are sprayed from spray equipment, and even application is on substrate；
Step 4: above-mentioned substrate being placed in baking oven, electrically conductive polyaniline-fluoropolymer composite membrane is solidified into.
5. polyaniline-fluoropolymer composite membrane preparation method of conduction anti-corrosion function according to claim 4, special Sign is, in the step 2, polyaniline powder and fluoropolymer powder mixed proportion are 1:10-15.
6. polyaniline-fluoropolymer composite membrane preparation method of conduction anti-corrosion function according to claim 4, special Sign is, in the step 3, the voltage of electrostatic spraying apparatus is 10-20kV；In the step 4, cured temperature is 270- 300℃。
7. polyaniline-fluoropolymer composite membrane application of any conductive anti-corrosion function of claim 1-3, feature It is, is used to prepare functional material.
8. polyaniline-fluoropolymer composite membrane application of conduction anti-corrosion function according to claim 7, feature exist In the functional material is anti-electromagnetic shielding material, anti-static material, corrosion-resistant material.
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