CN112852269A - Antistatic polyurea coating for petroleum and petrochemical industry and preparation method thereof - Google Patents
Antistatic polyurea coating for petroleum and petrochemical industry and preparation method thereof Download PDFInfo
- Publication number
- CN112852269A CN112852269A CN202110049561.0A CN202110049561A CN112852269A CN 112852269 A CN112852269 A CN 112852269A CN 202110049561 A CN202110049561 A CN 202110049561A CN 112852269 A CN112852269 A CN 112852269A
- Authority
- CN
- China
- Prior art keywords
- component
- carbon nano
- nano tube
- antistatic
- petroleum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/02—Polyureas
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4854—Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6681—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38
- C08G18/6685—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38 with compounds of group C08G18/3225 or polyamines of C08G18/38
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
- C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/04—Antistatic
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Paints Or Removers (AREA)
Abstract
The invention provides an antistatic polyurea coating for petroleum and petrochemical industry and a preparation method thereof, wherein the polyurea coating comprises a component A and a component B, wherein the component A comprises polyalcohol, modified carbon nano tubes and polyisocyanate; the component B comprises amino-terminated polyether, polyol, a coupling agent and the like. According to the method, 4' - (cyclohexane-2, 5-diene-1, 4-dimethylene bis (azaalkylene)) diphenylamine is slowly polymerized on the surface of a carbon nano tube and gradually nucleates and grows, the polyaniline can be uniformly coated on the surface of the carbon nano tube after polymerization, the dispersibility in the solution is greatly improved after the surface of the carbon nano tube is coated and compounded by aniline, the carbon nano tube is well and uniformly connected with each other to form a conductive framework of the material, meanwhile, the carbon nano tube is large in unfolded area, the polyaniline is coated by chemical reduction and oxidation and can be uniformly distributed on a polyurea body, and the excellent physical performance of the polyurea is maintained, and meanwhile, the antistatic property and the anticorrosion performance of the polyurea are improved.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to an antistatic polyurea coating for the petroleum and petrochemical industry and a preparation method thereof.
Background
In the petrochemical industry, most media have flammable and explosive characteristics, and static electricity is often generated and accumulated during the production, transportation, storage and use of the media. If the charges cannot be discharged in time and are gradually accumulated to a certain degree, electrostatic discharge is very easy to occur, flammable and explosive gas, liquid steam or flammable mixture formed by suspended dust and air is ignited, so that fire and even explosion accidents are caused, the personal safety is harmed, and the normal production is influenced. For petrochemical enterprises, the main objective of electrostatic safety protection is to prevent fire explosion.
The prior art discloses a water-based static conductive polyurea coating, which realizes the static conductive function of the water-based polyurea coating, uses conductive powder matched with water-based polyurea to select and determine proper dispersing agent and emulsifying agent, so that the matched conductive powder is uniformly distributed in the water-based polyurea coating, can effectively prevent static aggregation, can release the aggregated static brought by foreign objects through conduction and dissipation, and has the function of preventing static sparks. The polyurea coating is realized by adding conductive powder such as aluminum powder, silver powder, conductive mica powder, conductive mortar powder, conductive carbon black, conductive carbon fiber and conductive graphene, wherein the conductive powder is inorganic filler and is only physically mixed with the polyurea elastomer, the polyurea tensile strength is reduced by adding the filler, the elongation at break is reduced, the physical performance of polyurea is influenced, and the traditional conductive powder such as the aluminum powder, the silver powder and the conductive mica powder has large specific gravity, so that the problems of coating sedimentation and layering, difficult stirring, easy gun blockage in spraying construction and the like are easily caused.
Based on the technical deficiencies of current polyurea coatings, there is a need to improve this.
Disclosure of Invention
In view of the above, the invention provides an antistatic polyurea coating for the petroleum and petrochemical industry and a preparation method thereof, which at least partially solve the technical problems in the prior art.
In a first aspect, the invention provides an antistatic polyurea coating for petroleum and petrochemical industry, which comprises a component A and a component B, wherein the component A comprises polyalcohol, modified carbon nano tubes and polyisocyanate; the component B comprises amino-terminated polyether, polyol, a coupling agent, a chain extender, a catalyst, a water scavenger and color paste;
the preparation method of the modified carbon nano tube comprises the following steps: adding the carbon nano tube and 4, 4' - (cyclohexane-2, 5-diene-1, 4-dimethylene bis (azaalkylidene)) diphenylamine into a hydrochloric acid solution, dispersing, then adding an ammonium persulfate solution, reacting and filtering to obtain the modified carbon nano tube.
Optionally, the antistatic polyurea coating for petroleum and petrochemical industry is characterized in that the carbon nanotube is a multi-walled carbon nanotube, the diameter of the multi-walled carbon nanotube is 10-30 nm, and the specific surface area of the multi-walled carbon nanotube is 30-50 m2/g。
Optionally, the antistatic polyurea coating for petroleum and petrochemical industry comprises one or more of polyoxypropylene glycol, polytetrahydrofuran ether glycol, polycaprolactone glycol, polyester glycol and polycarbonate glycol.
Optionally, the antistatic polyurea coating for the petroleum and petrochemical industry includes one or more of diphenylmethane diisocyanate, isophorone diisocyanate, dicyclohexylmethane diisocyanate, methylcyclohexyl diisocyanate, cyclohexanedimethylene isocyanate, xylylene diisocyanate, and 1, 4-cyclohexanediisocyanate.
Optionally, the amine-terminated polyether comprises difunctional amine-terminated polyether or trifunctional amine-terminated polyether.
Optionally, the antistatic polyurea coating for petroleum and petrochemical industry comprises one or more of 3, 5-dimethylthiotoluenediamine, 2, 4-diamino-3, 5-dimethylthiochlorobenzene, 4 '-bis-sec-butylaminodiphenylmethane, N, -dialkylphenylenediamine, 2, 4-diamino-3-methylthio-5-propyltoluene, 3' -dimethyl-4, 4 '-diaminodicyclohexylmethane, 4' -bis-sec-butylaminodicyclohexylmethane, 3 '-dimethyl-4, 4' -bis-sec-butylaminodicyclohexylmethane, trimethylhexamethylenediamine and hydrogenated MDA.
Optionally, the coupling agent comprises one or more of a silane coupling agent, a titanate coupling agent, an aluminate coupling agent, a borate coupling agent, a bimetallic coupling agent and a phosphate coupling agent; the catalyst comprises one or more of bismuth isooctanoate, zinc isooctanoate, triethylene diamine, dimorpholinodiethyl ether, tetrabutyl titanate and tetraisopropyl titanate; the water scavenger comprises a molecular sieve.
Optionally, in the antistatic polyurea coating for the petroleum and petrochemical industry, the mass ratio of the polyhydric alcohol to the modified carbon nano tube to the polyisocyanate in the component A is (50-100) to (1-4) to (150-250); the component B comprises (by mass ratio) amino-terminated polyether (30-60): (20-50): (1-2): (20-40): 0-1): 1-5).
In a second aspect, the invention also provides a preparation method of the antistatic polyurea coating for the petroleum and petrochemical industry, which comprises the preparation of the component A and the preparation of the component B, wherein the preparation of the component A comprises the following steps: stirring and heating polyol, adding the modified carbon nano tube, dehydrating under vacuum, adding polyisocyanate, and reacting to obtain a component A;
the preparation of the component B comprises the following steps: and uniformly mixing the amino-terminated polyether, the polyol, the coupling agent, the chain extender, the catalyst, the water removing agent and the color paste, and filtering to obtain the component B.
Optionally, in the preparation method of the antistatic polyurea coating for the petroleum and petrochemical industry, the polyol is stirred and heated, then the modified carbon nanotube is added, the dehydration is performed under vacuum, then the polyisocyanate is added, and the reaction is performed until the NCO content is 14-17%, so that the component A is obtained.
Compared with the prior art, the preparation method of the antistatic polyurea coating for the petroleum and petrochemical industry has the following beneficial effects:
(1) the antistatic polyurea coating for the petroleum and petrochemical industry comprises a modified carbon nano tube, wherein 4, 4' - (cyclohexane-2, 5-diene-1, 4-dimethylenebis (azaalkylene)) diphenylamine is slowly polymerized on the surface of the carbon nano tube and gradually nucleates and grows, the polyaniline can be uniformly coated on the surface of the carbon nano tube after polymerization, the dispersibility of the polyaniline in a solution is greatly improved after the surface of the carbon nano tube is coated and compounded by aniline, and the agglomeration phenomenon is reduced, and the amorphous shape enables a large number of carbon nano tubes to be well and uniformly connected with one another to form a conductive framework of the material; the 4, 4' - (cyclohexyl-2, 5-diene-1, 4-dimethylene bis (azaalkylidene)) diphenylamine structure contains amino, and can react with isocyanate, so that the dispersion uniformity of the carbon nano tube in a system is improved, a conductive coating is formed, and the conductivity of the coating is improved; in addition, the reaction of the amino and the isocyanate can also increase the crosslinking density of the polyurea; the antistatic polyurea coating for the petroleum and petrochemical industry has the advantages that the carbon nano tube is large in unfolded area and small in using amount, polyaniline is wrapped by chemical reduction and oxidation, so that the polyaniline can be uniformly distributed on a polyurea body, the conductivity of the carbon nano tube is fully exerted, and the antistatic property and the corrosion resistance of polyurea are improved while the excellent physical properties of the polyurea are maintained;
(2) the carbon nano tubes used in the antistatic polyurea coating for the petroleum and petrochemical industry are powdery substances, but are small in addition amount, are not physically mixed, and are chemically bonded with polyurea, so that the physical performance and the spraying efficiency of the polyurea are not influenced.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
An antistatic polyurea coating for petroleum and petrochemical industry comprises a component A and a component B, wherein the component A comprises polyalcohol, modified carbon nano tubes and polyisocyanate; the component B comprises amino-terminated polyether, polyol, a coupling agent, a chain extender, a catalyst, a water scavenger and color paste;
the preparation method of the modified carbon nano tube comprises the following steps: adding the carbon nano tube and 4, 4' - (cyclohexane-2, 5-diene-1, 4-dimethylene bis (azaalkylidene)) diphenylamine into a hydrochloric acid solution, dispersing, then adding an ammonium persulfate solution, reacting and filtering to obtain the modified carbon nano tube.
In this application, 4' - (cyclohexane-2, 5-diene-1, 4-dimethylenebis (azaalkylidene)) diphenylamine is an intrinsic polyaniline and is available from kull chemical technology (beijing) ltd.
The antistatic polyurea coating for the petroleum and petrochemical industry comprises a modified carbon nano tube, wherein 4, 4' - (cyclohexane-2, 5-diene-1, 4-dimethylenebis (azaalkylene)) diphenylamine is slowly polymerized on the surface of the carbon nano tube and gradually nucleates and grows, the polyaniline can be uniformly coated on the surface of the carbon nano tube after polymerization, the surface of the carbon nano tube is coated and compounded by benzene and amine, the dispersibility of the polyaniline in a solution is greatly improved, the agglomeration phenomenon is reduced, and the amorphous morphology enables a large number of carbon nano tubes to be well and uniformly connected with one another to form a conductive framework of the material; the 4, 4' - (cyclohexyl-2, 5-diene-1, 4-dimethylene bis (azaalkylidene)) diphenylamine structure contains amino, and can react with isocyanate, so that the dispersion uniformity of the carbon nano tube in a system is improved, a conductive coating is formed, and the conductivity of the coating is improved; in addition, the reaction of the amino and the isocyanate can also increase the crosslinking density of the polyurea; the antistatic polyurea coating for the petroleum and petrochemical industry has the advantages that the carbon nano tubes are large in unfolded area and small in using amount, the polyaniline is wrapped by chemical reduction and oxidation, the polyaniline can be uniformly distributed on the polyurea body, the conductivity of the carbon nano tubes is fully exerted, the excellent physical properties of the polyurea are maintained, the antistatic property and the corrosion resistance of the polyurea are improved, the carbon nano tubes are powdery substances, but are small in adding amount, are not physically mixed and are chemically bonded with the polyurea, and therefore the physical properties and the spraying efficiency of the polyurea cannot be influenced; the antistatic polyurea coating for the petrochemical industry can be applied to the petrochemical industry and other industries to prevent static accumulation.
In some embodiments, the preparation method of the modified carbon nanotube specifically comprises: adding 1-4 parts by weight of carbon nano tube and 2-6 parts by weight of 4, 4' - (cyclohexane-2, 5-diene-1, 4-dimethylene bis (azaalkylene)) diphenylamine into 50 parts by weight of 1mol/L hydrochloric acid solution, performing ultrasonic dispersion for 1-2 hours, then adding 50 parts by weight of 1mol/L ammonium persulfate solution, continuing to react for 2 hours, after the reaction is finished, filtering, washing the product with deionized water, and performing vacuum drying at 60 ℃ for 12 hours to obtain the modified carbon nano tube.
In some embodiments, the carbon nanotubes are multi-walled carbon nanotubes having a diameter of 10 to 30nm and a specific surface area of 30 to 50m2/g。
In some embodiments, the multi-walled carbon nanotubes are less than 5 μm in length.
In some embodiments, the polyol comprises one or more of a polyoxypropylene diol, a polytetrahydrofuran ether diol, a polycaprolactone diol, a polyester diol, a polycarbonate diol.
In some embodiments, the polyol has an average molecular weight of 400 to 1500.
In some embodiments, the polyisocyanate includes one or more of diphenylmethane diisocyanate, isophorone diisocyanate, dicyclohexylmethane diisocyanate, methylcyclohexyl diisocyanate, cyclohexanedimethylene diisocyanate, xylylene diisocyanate, 1, 4-cyclohexanediisocyanate.
In some embodiments, the amino-terminated polyether comprises a difunctional amino-terminated polyether or a trifunctional amino-terminated polyether.
In some embodiments, the chain extender comprises one or more of 3, 5-dimethylthiotoluenediamine, 2, 4-diamino-3, 5-dimethylthiochlorobenzene, 4 '-bis-sec-butylaminodiphenylmethane, N, -dialkylphenylenediamine, 2, 4-diamino-3-methylthio-5-propyltoluene, 3' -dimethyl-4, 4 '-diaminodicyclohexylmethane, 4' -bis-sec-butylaminodicyclohexylmethane, 3 '-dimethyl-4, 4' -bis-sec-butylamino-dicyclohexylmethane, trimethylhexamethylenediamine, hydrogenated MDA.
In some embodiments, the coupling agent comprises one or more of a silane coupling agent, a titanate coupling agent, an aluminate coupling agent, a borate coupling agent, a bimetallic coupling agent, and a phosphate coupling agent; the catalyst comprises one or more of bismuth isooctanoate, zinc isooctanoate, triethylene diamine, dimorpholinodiethyl ether, tetrabutyl titanate and tetraisopropyl titanate.
In some embodiments, the water scavenger comprises a molecular sieve having a molecular sieve specification of 3A or 4A.
In some embodiments, the color paste is a polyurethane industry common color paste, and the colors include red, yellow, blue, green, white, and black pastes.
In some embodiments, the mass ratio of the polyol to the modified carbon nanotube to the polyisocyanate in the A component is (50-100): 1-4): 150-250;
the component B comprises (by mass ratio) amino-terminated polyether (30-60): (20-50): (1-2): (20-40): 0-1): 1-5).
Based on the same inventive concept, the application also provides a preparation method of the antistatic polyurea coating for the petroleum and petrochemical industry, which comprises the preparation of the component A and the preparation of the component B, wherein the preparation of the component A comprises the following steps: stirring and heating polyhydric alcohol, dehydrating under vacuum, adding polyisocyanate, and reacting to obtain a component A;
the preparation of the component B comprises the following steps: and uniformly mixing the amino-terminated polyether, the polyol, the coupling agent, the chain extender, the catalyst, the water removing agent and the color paste, and filtering to obtain the component B.
In some embodiments, the a component is prepared by: stirring and heating polyhydric alcohol to 95-105 ℃, adding the modified carbon nano tube, dehydrating for 5-7 h in the air, relieving vacuum, cooling to below 50 ℃, adding polyisocyanate, reacting for 3-4 h at 90 ℃, measuring-NCO value, and discharging to obtain the prepolymer A component.
In some embodiments, the NCO content of the A component in the prepolymer is 14-17%.
In some embodiments, the isocyanate index of the A component and the B component is 1.05 to 1.10.
When the antistatic polyurea coating for the petroleum and petrochemical industry is used, the component A and the component B are mixed according to the volume ratio of 1: 1-1.2 and then coated on the surface of a sample.
The preparation method of the antistatic polyurea coating for petroleum and petrochemical industry of the present application is further illustrated by specific examples.
Example 1
A preparation method of an antistatic polyurea coating for the petroleum and petrochemical industry comprises the preparation of a component A and the preparation of a component B, wherein the preparation of the component A comprises the following steps:
s1, adding 1 part by weight of multi-walled carbon nanotube and 6 parts by weight of 4, 4' - (cyclohexane-2, 5-diene-1, 4-dimethylenebis (azaalkylene)) diphenylamine into 50 parts by weight of 1mol/L hydrochloric acid solution, performing ultrasonic dispersion for 1h, adding 50 parts by weight of 1mol/L ammonium persulfate solution, continuing to react for 2h, finishing the reaction, filtering, washing the product with deionized water, performing vacuum drying at 60 ℃ for 12h to obtain a modified multi-walled carbon nanotube, and sealing in an inert environment for later use;
s2, stirring and heating 150 parts by weight of PTMEG1000 to 95 ℃, dehydrating for 5 hours under vacuum-0.1 MPa, relieving the vacuum, cooling to below 50 ℃, adding 200 parts of MDI-50, reacting for 3-4 hours at 90 ℃, measuring the-NCO value to be 15% after the reaction is finished, and discharging to obtain the prepolymer A component.
The preparation of the component B comprises the following steps: the component B is prepared by putting 50 parts by weight of amino-terminated polyether D2000, 20 parts by weight of PTMEG650, 1 part by weight of titanate coupling agent KR-TTS, 20 parts by weight of chain extender 4, 4' -bis-sec-butyl aminodiphenylmethane (Unilink4200), 1 part by weight of 4A molecular sieve and 4 parts by weight of black color paste into a high-speed dispersion machine storage tank in sequence, stirring for 15min at room temperature, grinding by a sand mill and filtering.
Example 2
A preparation method of an antistatic polyurea coating for the petroleum and petrochemical industry comprises the preparation of a component A and the preparation of a component B, wherein the preparation of the component A comprises the following steps:
s1, adding 1 part by weight of multi-walled carbon nanotube and 6 parts by weight of 4, 4' - (cyclohexane-2, 5-diene-1, 4-dimethylenebis (azaalkylene)) diphenylamine into 50 parts by weight of 1mol/L hydrochloric acid solution, performing ultrasonic dispersion for 1h, adding 50 parts by weight of 1mol/L ammonium persulfate solution, continuing to react for 2h, finishing the reaction, filtering, washing the product with deionized water, performing vacuum drying at 60 ℃ for 12h to obtain a modified multi-walled carbon nanotube, and sealing in an inert environment for later use;
s2, stirring and heating 150 parts by weight of PTMEG1000 to 95 ℃, dehydrating for 5 hours under vacuum-0.1 MPa, relieving the vacuum, cooling to below 50 ℃, adding 200 parts of MDI-50, reacting for 3-4 hours at 90 ℃, measuring the-NCO value to be 15% after the reaction is finished, and discharging to obtain the prepolymer A component.
The preparation of the component B comprises the following steps: the component B is prepared by putting 50 parts by weight of amino-terminated polyether D2000, 20 parts by weight of PTMEG650, 1 part by weight of titanate coupling agent KR-TTS, 20 parts by weight of chain extender 4, 4' -bis-sec-butyl aminodiphenylmethane (Unilink4200), 1 part by weight of 4A molecular sieve and 4 parts by weight of black color paste into a high-speed dispersion machine storage tank in sequence, stirring for 15min at room temperature, grinding by a sand mill and filtering.
The antistatic polyurea coating for the petroleum and petrochemical industry prepared in the above examples 1-2 is prepared by mixing the component A and the component B according to the volume ratio of 1:1, uniformly mixing the components by a spraying machine, spraying the mixture on the surface of a steel plate to obtain a coating, placing the obtained coating in an environment with the temperature of (25 +/-2) DEG C and the humidity of (50 +/-5)%, curing for 7 days, and testing the tensile strength, the electrical conductivity, the tensile strength, the elongation at break and the tear strength, wherein the results are shown in the following table 1.
TABLE 1 Properties of the coatings obtained in the different examples
| Performance of | Example 1 | Example 2 |
| Tensile strength (Mpa) | ≥8 | ≥8.5 |
| Conductivity (S/cm) | 3.6×10-3 | 1.6×10-3 |
| Tensile strength (Mpa) | 18 | 20 |
| Elongation at Break (%) | 350 | 450 |
| Tear Strength (N/mm) | 75 | 80 |
As can be seen from table 1 above, the coating layer formed by the antistatic polyurea coating prepared by the present invention has good drawing strength, conductivity, tensile strength, elongation at break and tear strength, and the formed coating layer has good physical properties.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. An antistatic polyurea coating for petroleum and petrochemical industry is characterized in that: the modified carbon nano tube composite material comprises a component A and a component B, wherein the component A comprises polyalcohol, modified carbon nano tubes and polyisocyanate; the component B comprises amino-terminated polyether, polyol, a coupling agent, a chain extender, a catalyst, a water scavenger and color paste;
the preparation method of the modified carbon nano tube comprises the following steps: adding the carbon nano tube and 4, 4' - (cyclohexane-2, 5-diene-1, 4-dimethylene bis (azaalkylidene)) diphenylamine into a hydrochloric acid solution, dispersing, then adding an ammonium persulfate solution, reacting and filtering to obtain the modified carbon nano tube.
2. The antistatic polyurea coating for petroleum and petrochemical industry according to claim 1, wherein: the carbon nano tube is a multi-walled carbon nano tube, the diameter of the multi-walled carbon nano tube is 10-30 nm, and the specific surface area of the multi-walled carbon nano tube is 30-50 m2/g。
3. The antistatic polyurea coating for petroleum and petrochemical industry according to claim 1, wherein: the polyalcohol comprises one or more of polyoxypropylene diol, polytetrahydrofuran ether diol, polycaprolactone diol, polyester diol and polycarbonate diol.
4. The antistatic polyurea coating for petroleum and petrochemical industry according to claim 1, wherein: the polyisocyanate comprises one or more of diphenylmethane diisocyanate, isophorone diisocyanate, dicyclohexylmethane diisocyanate, methylcyclohexyl diisocyanate, cyclohexane dimethylene diisocyanate, xylylene diisocyanate and 1, 4-cyclohexane diisocyanate.
5. The antistatic polyurea coating for petroleum and petrochemical industry according to claim 1, wherein: the amino-terminated polyether comprises a difunctional amino-terminated polyether or a trifunctional amino-terminated polyether.
6. The antistatic polyurea coating for petroleum and petrochemical industry according to claim 1, wherein: the chain extender comprises one or more of 3, 5-dimethylthiotoluenediamine, 2, 4-diamino-3, 5-dimethylthiochlorobenzene, 4 '-bis-sec-butylaminodiphenylmethane, N-dialkyl phenylenediamine, 2, 4-diamino-3-methylthio-5-propyltoluene, 3' -dimethyl-4, 4 '-diaminodicyclohexylmethane, 4' -bis-sec-butylaminodicyclohexylmethane, 3 '-dimethyl-4, 4' -bis-sec-butylaminodicyclohexylmethane, trimethylhexamethylenediamine and hydrogenated MDA.
7. The antistatic polyurea coating for petroleum and petrochemical industry according to claim 1, wherein: the coupling agent comprises one or more of silane coupling agent, titanate coupling agent, aluminate coupling agent, borate coupling agent, bimetallic coupling agent and phosphate coupling agent; the catalyst comprises one or more of bismuth isooctanoate, zinc isooctanoate, triethylene diamine, dimorpholinodiethyl ether, tetrabutyl titanate and tetraisopropyl titanate; the water scavenger comprises a molecular sieve.
8. The antistatic polyurea coating for petroleum and petrochemical industry according to claim 1, wherein: the mass ratio of the polyhydric alcohol to the modified carbon nano tube to the polyisocyanate in the component A is (50-100) to (1-4) to (150-250); the component B comprises (by mass ratio) amino-terminated polyether (30-60): (20-50): (1-2): (20-40): 0-1): 1-5).
9. The preparation method of the antistatic polyurea coating used in the petroleum and petrochemical industry according to any one of claims 1 to 8, wherein the preparation method comprises the following steps: the preparation method comprises the preparation of a component A and the preparation of a component B, wherein the preparation of the component A comprises the following steps: stirring and heating polyol, adding the modified carbon nano tube, dehydrating under vacuum, adding polyisocyanate, and reacting to obtain a component A;
the preparation of the component B comprises the following steps: and uniformly mixing the amino-terminated polyether, the polyol, the coupling agent, the chain extender, the catalyst, the water removing agent and the color paste, and filtering to obtain the component B.
10. The method for preparing an antistatic polyurea coating for the petroleum and petrochemical industry according to claim 9, wherein: and stirring and heating the polyhydric alcohol, adding the modified carbon nano tube, dehydrating under vacuum, adding the polyisocyanate, and reacting until the NCO content is 14-17% to obtain the component A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110049561.0A CN112852269A (en) | 2021-01-14 | 2021-01-14 | Antistatic polyurea coating for petroleum and petrochemical industry and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110049561.0A CN112852269A (en) | 2021-01-14 | 2021-01-14 | Antistatic polyurea coating for petroleum and petrochemical industry and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112852269A true CN112852269A (en) | 2021-05-28 |
Family
ID=76006144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110049561.0A Pending CN112852269A (en) | 2021-01-14 | 2021-01-14 | Antistatic polyurea coating for petroleum and petrochemical industry and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112852269A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114656828A (en) * | 2022-03-09 | 2022-06-24 | 青岛爱尔家佳新材料股份有限公司 | Flame-retardant polyurea for new energy battery box and preparation method thereof |
| CN115651512A (en) * | 2022-11-14 | 2023-01-31 | 中冶武汉冶金建筑研究院有限公司 | Multifunctional polyaspartic acid ester polyurea and preparation method thereof |
| WO2024094900A1 (en) | 2022-11-04 | 2024-05-10 | Sika Technology Ag | Anti-static coating system |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101338017A (en) * | 2008-08-11 | 2009-01-07 | 海洋化工研究院 | Antistatic flexible polyurea composition, preparation thereof, construction method and applications |
| JP2013003577A (en) * | 2011-06-15 | 2013-01-07 | Xerox Corp | Charge roller surface coating comprising carbon nanotubes |
| KR20130066384A (en) * | 2011-12-12 | 2013-06-20 | 건양대학교산학협력단 | Coating composition comprising aniline terminated waterborne polyurethane and carbon nanotube |
| CN103709362A (en) * | 2013-12-21 | 2014-04-09 | 青岛海洋新材料科技有限公司 | Spray coating type fire-retardant antistatic polyurethane elastomer and preparation method thereof |
| CN104098944A (en) * | 2013-05-31 | 2014-10-15 | 江西省电力科学研究院 | Method for preparing high-performance fluoro-carbon anticorrosive coating through grafting of conducting polymer onto carbon nanotube |
| CN109384919A (en) * | 2018-11-07 | 2019-02-26 | 江苏维特金属防腐科技有限公司 | Electrically conductive polyaniline carbon nanotube nucleocapsid hybrid composite material, preparation method and applications |
| CN110305573A (en) * | 2019-06-27 | 2019-10-08 | 青岛爱尔家佳新材料股份有限公司 | A kind of carbon nano-tube modification polyureas explosion-proof lamp and preparation method thereof |
| CN111423797A (en) * | 2019-01-10 | 2020-07-17 | 沈阳化工研究院有限公司 | Water-based static conductive polyurea coating and preparation method thereof |
| CN111499834A (en) * | 2020-04-22 | 2020-08-07 | 青岛爱尔家佳新材料股份有限公司 | Flame-retardant polyurea anti-explosion protection material and preparation method thereof |
| CN111808261A (en) * | 2020-06-29 | 2020-10-23 | 青岛爱尔家佳新材料股份有限公司 | Antistatic and explosion-proof polyurea material and preparation method and application thereof |
-
2021
- 2021-01-14 CN CN202110049561.0A patent/CN112852269A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101338017A (en) * | 2008-08-11 | 2009-01-07 | 海洋化工研究院 | Antistatic flexible polyurea composition, preparation thereof, construction method and applications |
| JP2013003577A (en) * | 2011-06-15 | 2013-01-07 | Xerox Corp | Charge roller surface coating comprising carbon nanotubes |
| KR20130066384A (en) * | 2011-12-12 | 2013-06-20 | 건양대학교산학협력단 | Coating composition comprising aniline terminated waterborne polyurethane and carbon nanotube |
| CN104098944A (en) * | 2013-05-31 | 2014-10-15 | 江西省电力科学研究院 | Method for preparing high-performance fluoro-carbon anticorrosive coating through grafting of conducting polymer onto carbon nanotube |
| CN103709362A (en) * | 2013-12-21 | 2014-04-09 | 青岛海洋新材料科技有限公司 | Spray coating type fire-retardant antistatic polyurethane elastomer and preparation method thereof |
| CN109384919A (en) * | 2018-11-07 | 2019-02-26 | 江苏维特金属防腐科技有限公司 | Electrically conductive polyaniline carbon nanotube nucleocapsid hybrid composite material, preparation method and applications |
| CN111423797A (en) * | 2019-01-10 | 2020-07-17 | 沈阳化工研究院有限公司 | Water-based static conductive polyurea coating and preparation method thereof |
| CN110305573A (en) * | 2019-06-27 | 2019-10-08 | 青岛爱尔家佳新材料股份有限公司 | A kind of carbon nano-tube modification polyureas explosion-proof lamp and preparation method thereof |
| CN111499834A (en) * | 2020-04-22 | 2020-08-07 | 青岛爱尔家佳新材料股份有限公司 | Flame-retardant polyurea anti-explosion protection material and preparation method thereof |
| CN111808261A (en) * | 2020-06-29 | 2020-10-23 | 青岛爱尔家佳新材料股份有限公司 | Antistatic and explosion-proof polyurea material and preparation method and application thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114656828A (en) * | 2022-03-09 | 2022-06-24 | 青岛爱尔家佳新材料股份有限公司 | Flame-retardant polyurea for new energy battery box and preparation method thereof |
| CN114656828B (en) * | 2022-03-09 | 2022-11-22 | 青岛爱尔家佳新材料股份有限公司 | Flame-retardant polyurea for new energy battery box and preparation method thereof |
| WO2024094900A1 (en) | 2022-11-04 | 2024-05-10 | Sika Technology Ag | Anti-static coating system |
| CN115651512A (en) * | 2022-11-14 | 2023-01-31 | 中冶武汉冶金建筑研究院有限公司 | Multifunctional polyaspartic acid ester polyurea and preparation method thereof |
| CN115651512B (en) * | 2022-11-14 | 2023-12-08 | 中冶武汉冶金建筑研究院有限公司 | Multifunctional polyaspartic acid ester polyurea and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112852269A (en) | Antistatic polyurea coating for petroleum and petrochemical industry and preparation method thereof | |
| CN107828046B (en) | Preparation method of waterborne polyurethane/dopamine modified graphene nano composite emulsion | |
| CN105153905B (en) | A kind of preparation method and applications of graphene modified polyurethane film forming agent | |
| CN101585902B (en) | Fluorinated polyurethane nanometer composite material and preparation method thereof | |
| CN101845217B (en) | Preparation method of water-based polyurethane/nano-silicon dioxide composite emulsion | |
| CN111808261B (en) | Antistatic and explosion-proof polyurea material and preparation method and application thereof | |
| CN111411416B (en) | Graphene spandex and preparation method thereof | |
| CN103555185A (en) | Surface flame retardant coating of rubber as well as preparation method of coating | |
| CN106947373A (en) | The SiO of surface-modified nano containing acrylate polymer2The cation electrodeposition coating of microballoon | |
| Wu et al. | Preparation of waterborne polyurethane nanocomposite reinforced with halloysite nanotubes for coating applications | |
| CN114805736A (en) | A kind of polyurethane elastomer composite material and preparation method thereof | |
| CN103834034B (en) | Polyureas copolymer with main chain containing siloxane composition unit and preparation method thereof | |
| CN115262231A (en) | A self-healing self-cleaning electromagnetic shielding fabric coating and its preparation method and application | |
| Ashraf et al. | Development of novel conducting composites of linseed‐oil‐based poly (urethane amide) with nanostructured poly (1‐naphthylamine) | |
| CN104744988B (en) | A kind of preparation method for being used to improve the nano-alumina dispersions and super abrasive high concentrations of toluene diisocyanate of high concentrations of toluene diisocyanate anti-wear performance | |
| CN113004779A (en) | Polyurea coating for seepage prevention of storage power station warehouse basin and preparation method thereof | |
| CN112708271A (en) | Preparation method of hydroxyl modified anti-knock material prepolymer | |
| CN111909350A (en) | Nano-silica modified aqueous polyurea and preparation method thereof | |
| CN112812540A (en) | Hydroxyl and amino modified anti-knock composite material and preparation method thereof | |
| CN112592648A (en) | Spraying type anti-corrosion polyurea coating for waste incineration industry and preparation method thereof | |
| CN114921168A (en) | Carbon-silicon nano material modified waterborne polyurethane emulsion, and synthesis method and application thereof | |
| CN114525051A (en) | Anticorrosive conductive coating and preparation method thereof | |
| CN112760020A (en) | Antibacterial and anticorrosive polyurea coating and preparation method thereof | |
| CN113980566A (en) | Polyacrylate functionalized graphene modified polyurethane composite coating and preparation method thereof | |
| CN114752246B (en) | Hollow multi-shell core-shell material, preparation method thereof and explosion-proof polyurea |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210528 |