CN111534208A - Preparation process of coastal building anticorrosive paint - Google Patents
Preparation process of coastal building anticorrosive paint Download PDFInfo
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- CN111534208A CN111534208A CN202010534811.5A CN202010534811A CN111534208A CN 111534208 A CN111534208 A CN 111534208A CN 202010534811 A CN202010534811 A CN 202010534811A CN 111534208 A CN111534208 A CN 111534208A
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- 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
- C09D175/04—Polyurethanes
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
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- C08G18/752—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group
- C08G18/753—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group
- C08G18/755—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group and at least one isocyanate or isothiocyanate group linked to a secondary carbon atom of the cycloaliphatic ring, e.g. isophorone diisocyanate
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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Abstract
The invention provides a preparation process of a coastal building anticorrosive paint, and relates to the technical field of paint processing. The preparation process of the coastal building anticorrosive paint mainly comprises the following steps: the preparation method disclosed by the invention overcomes the defects of the prior art, effectively improves the salt spray corrosion resistance of the coating while ensuring the adhesiveness of the coating, improves the practical value of the coating outside buildings in coastal areas, and reduces the waste of resources.
Description
Technical Field
The invention relates to the technical field of coating processing, in particular to a preparation process of a coastal building anticorrosive coating.
Background
The paint is a kind of common decoration material which is coated on the surface of the protected or decorated object and can form a firmly attached continuous film with the coated object, and is a viscous liquid which is prepared by using resin, oil or emulsion as main material, adding or not adding pigment and filler, adding corresponding auxiliary agent and using organic solvent or water.
The general outdoor paint not only needs to have certain aesthetic property, but also needs to be small in size, resistant to oxidation and ultraviolet rays, so that the service life of the outdoor paint can be prolonged, the exterior of a building in a coastal region is eroded by sea wind for a long time, and the sea wind contains a large amount of sea salt, so that the exterior of the building can be accelerated to corrode, so that the exterior of the building in the coastal region is generally coated and protected by paint with a certain anticorrosion effect, but the traditional anticorrosion paint is not excellent in the anticorrosion protection effect on the sea salt, the surface corrosion can be caused even if the traditional anticorrosion paint is exposed to the sea wind environment for a long time, the integral aesthetic property is reduced, and the paint needs to be supplemented regularly, so that the promotion of the salt spray corrosion resistance of the paint is an important research direction for the exterior protection.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a preparation process of the coastal building anticorrosive coating, which can effectively improve the salt spray corrosion resistance of the coating while ensuring the adhesiveness of the coating, improve the practical value of the coating outside buildings in coastal areas and reduce the waste of resources.
In order to achieve the above purpose, the technical scheme of the invention is realized by the following technical scheme:
a preparation process of a coastal building anticorrosive paint comprises the following steps:
(1) modification treatment of epoxy resin: selecting bisphenol A type epoxy resin, mixing isophorone diisocyanate, polypropylene glycol and nitropropane, placing the mixture in a high-pressure reaction kettle, uniformly mixing the mixture at the temperature of 120 ℃ and under the pressure of 4-6Mpa, standing the mixture for 2 hours, and taking the mixture out to obtain modified epoxy resin for later use;
(2) and (3) secondary modification of epoxy resin: taking out the modified epoxy resin, adding the nano graphene, mixing, heating to 140 ℃ and 150 ℃, uniformly stirring, and standing in a high-voltage electric field for 3-5min to obtain secondary modified epoxy resin for later use;
(3) and (3) mixing of fillers: mixing the fillers, sintering at high temperature, taking out, grinding, crushing, sieving with a 120-mesh sieve, adding into the secondary modified epoxy resin, heating to 70-80 ℃, uniformly stirring, continuously heating to 90-100 ℃, preserving heat, and standing for 30-40min to obtain a mixture for later use;
(4) preparing auxiliary materials: selecting polyacrylate emulsion, mixing, adding organic fluorine, uniformly mixing at 80-85 ℃, sealing, and stirring at a high speed of 1200-1400r/min for 20-30min to obtain mixed emulsion for later use;
(5) and (3) mixing auxiliary agents: and adding the mixed emulsion into the mixture, adding the mixed auxiliary agent, heating and uniformly stirring at the high temperature of 90-95 ℃ in a stirrer, adjusting the temperature to 50-60 ℃, adding the pigment, the curing agent and the deionized water, and continuously stirring to obtain the coastal building anticorrosive paint.
Preferably, the mixing mass ratio of the bisphenol A epoxy resin, the isophorone diisocyanate, the polypropylene glycol and the nitropropane in the step (1) is 25-30: 6-8: 4-5: 5-8.
Preferably, the mass ratio of the modified epoxy resin to the nano graphene in the step (2) is 50-52: 3-6.
Preferably, the filler in the step (3) is composed of the following materials in parts by weight: 4-6 parts of titanium dioxide, 1-3 parts of silicon dioxide, 2-4 parts of mica, 2-3 parts of bentonite, 2-3 parts of cerium oxide and 4-6 parts of acetylene black.
Preferably, the mass ratio of the secondary modified epoxy resin to the filler in the step (3) is 6-8: 1-3.
Preferably, the mass ratio of the polyacrylate emulsion to the organic fluorine in the step (4) is 12-14: 2-3.
Preferably, the mixing aid in the step (5) comprises the following substances in parts by weight: 2-3 parts of defoaming agent, 1-3 parts of wetting agent, 1-2 parts of plasticizer and 3-4 parts of organosilicon surfactant.
Preferably, the mass ratio of the substances in the step (5) is 2-3: 16-20: 26-30: 0-2: 2-3: 12-16.
The invention provides a preparation process of a coastal building anticorrosive paint, which has the advantages that compared with the prior art:
(1) according to the invention, the epoxy resin is preliminarily modified by adopting isophorone diisocyanate, polypropylene glycol and nitropropane, so that the mechanical property of the coating is effectively improved, meanwhile, the waterproof and anti-corrosion properties of the coating are improved, and the durability of the coating is enhanced;
(2) according to the epoxy resin, the nano graphene is subjected to treatment denaturation in a high-voltage electric field, so that the nano graphene can be effectively dispersed into the epoxy resin, meanwhile, the electric field modification improves the adhesiveness of the epoxy resin, so that the later-stage coating firmness is facilitated, the epoxy resin is prevented from falling off, and the corrosion resistance of the coating is further enhanced;
(3) according to the invention, the acrylate emulsion modified by organic fluorine is added in a mixing manner, so that the cohesiveness of the coating is further improved, the performance of the coating is enhanced, and meanwhile, the smoothness of the coated surface of the coating is effectively ensured after the acrylate emulsion is mixed with the secondarily modified oxygen-mixed resin, and the corrosion resistance is enhanced.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
a preparation process of a coastal building anticorrosive paint comprises the following steps:
(1) modification treatment of epoxy resin: selecting bisphenol A type epoxy resin, mixing isophorone diisocyanate, polypropylene glycol and nitropropane, placing the mixture in a high-pressure reaction kettle, uniformly mixing the mixture at the temperature of 120 ℃ and under the pressure of 4Mpa, standing the mixture for 2 hours, and taking the mixture out to obtain modified epoxy resin for later use;
(2) and (3) secondary modification of epoxy resin: taking out the modified epoxy resin, adding the nano graphene, mixing, heating to 140 ℃, uniformly stirring, and standing in a high-voltage electric field for 3min to obtain secondary modified epoxy resin for later use;
(3) and (3) mixing of fillers: mixing fillers, sintering at high temperature, taking out, grinding, crushing, sieving with a 120-mesh sieve, adding into the secondary modified epoxy resin, heating to 70 ℃, uniformly stirring, continuously heating to 90 ℃, preserving heat, and standing for 30min to obtain a mixture for later use;
(4) preparing auxiliary materials: selecting polyacrylate emulsion, mixing, adding organic fluorine, uniformly mixing at 80 ℃, sealing, and stirring at a high speed of 1200r/min for 20min to obtain mixed emulsion for later use;
(5) and (3) mixing auxiliary agents: and adding the mixed emulsion into the mixture, adding the mixed auxiliary agent, heating and stirring uniformly in a stirrer at a high temperature of 90 ℃, adjusting the temperature to 50 ℃, adding the pigment, the curing agent and the deionized water, and continuously stirring to obtain the coastal building anticorrosive paint.
Wherein, the mixing mass ratio of the bisphenol A type epoxy resin, the isophorone diisocyanate, the polypropylene glycol and the nitropropane in the step (1) is 25: 6: 4: 5; the mass ratio of the modified epoxy resin to the nano graphene in the step (2) is 50: 3; the filler in the step (3) is composed of the following substances in parts by weight: 4 parts of titanium dioxide, 1 part of silicon dioxide, 2 parts of mica, 2 parts of bentonite, 2 parts of cerium oxide and 4 parts of acetylene black; the mass ratio of the secondary modified epoxy resin to the filler in the step (3) is 6: 1; in the step (4), the mixing mass ratio of the polyacrylate emulsion to the organic fluorine is 12: 2; the mixed auxiliary agent in the step (5) comprises the following substances in parts by weight: 2 parts of defoaming agent, 1 part of wetting agent, 1 part of plasticizer and 3 parts of silicone surfactant; the mass ratio of the mixed substances in the step (5) is 2: 16: 26: 1: 2: 12 of mixed auxiliary agent, mixed emulsion, mixed material, pigment, curing agent and deionized water.
Example 2:
a preparation process of a coastal building anticorrosive paint comprises the following steps:
(1) modification treatment of epoxy resin: selecting bisphenol A type epoxy resin, mixing isophorone diisocyanate, polypropylene glycol and nitropropane, placing the mixture in a high-pressure reaction kettle, uniformly mixing the mixture at the temperature of 120 ℃ and under the pressure of 6Mpa, standing the mixture for 2 hours, and taking the mixture out to obtain modified epoxy resin for later use;
(2) and (3) secondary modification of epoxy resin: taking out the modified epoxy resin, adding the nano graphene, mixing, heating to 150 ℃, uniformly stirring, and standing in a high-voltage electric field for 5min to obtain secondary modified epoxy resin for later use;
(3) and (3) mixing of fillers: mixing fillers, sintering at high temperature, taking out, grinding, crushing, sieving with a 120-mesh sieve, adding into the secondary modified epoxy resin, heating to 80 ℃, uniformly stirring, continuously heating to 100 ℃, preserving heat, and standing for 40min to obtain a mixture for later use;
(4) preparing auxiliary materials: selecting polyacrylate emulsion, mixing with organic fluorine, uniformly mixing at 85 ℃, sealing, and stirring at a high speed of 1400r/min for 30min to obtain mixed emulsion for later use;
(5) and (3) mixing auxiliary agents: and adding the mixed emulsion into the mixture, adding the mixed auxiliary agent, heating and stirring uniformly in a stirrer at a high temperature of 95 ℃, adjusting the temperature to 60 ℃, adding the pigment, the curing agent and the deionized water, and continuously stirring to obtain the coastal building anticorrosive paint.
Wherein, the mixing mass ratio of the bisphenol A type epoxy resin, the isophorone diisocyanate, the polypropylene glycol and the nitropropane in the step (1) is 30: 8: 5: 8; the mass ratio of the modified epoxy resin to the nano graphene in the step (2) is 52: 6; the filler in the step (3) is composed of the following substances in parts by weight: 6 parts of titanium dioxide, 3 parts of silicon dioxide, 4 parts of mica, 3 parts of bentonite, 3 parts of cerium oxide and 6 parts of acetylene black; the mass ratio of the secondary modified epoxy resin to the filler in the step (3) is 8: 3; the mixing mass ratio of the polyacrylate emulsion to the organic fluorine in the step (4) is 14: 3; the mixed auxiliary agent in the step (5) comprises the following substances in parts by weight: 3 parts of defoaming agent, 3 parts of wetting agent, 2 parts of plasticizer and 4 parts of silicone surfactant; the mass ratio of the mixed substances in the step (5) is 3: 20: 30: 2: 3: 16 of mixed auxiliary agent, mixed emulsion, mixed material, pigment, curing agent and deionized water.
Example 3:
a preparation process of a coastal building anticorrosive paint comprises the following steps:
(1) modification treatment of epoxy resin: selecting bisphenol A type epoxy resin, mixing isophorone diisocyanate, polypropylene glycol and nitropropane, placing the mixture in a high-pressure reaction kettle, uniformly mixing the mixture at the temperature of 120 ℃ and the pressure of 5Mpa, standing the mixture for 2 hours, and taking the mixture out to obtain modified epoxy resin for later use;
(2) and (3) secondary modification of epoxy resin: taking out the modified epoxy resin, adding the nano graphene, mixing, heating to 145 ℃, uniformly stirring, and standing in a high-voltage electric field for 4min to obtain secondary modified epoxy resin for later use;
(3) and (3) mixing of fillers: mixing fillers, sintering at high temperature, taking out, grinding, crushing, sieving with a 120-mesh sieve, adding into the secondary modified epoxy resin, heating to 75 ℃, uniformly stirring, continuously heating to 95 ℃, keeping the temperature, and standing for 35min to obtain a mixture for later use;
(4) preparing auxiliary materials: selecting polyacrylate emulsion, mixing with organic fluorine, uniformly mixing at 80 ℃, sealing, and stirring at a high speed of 1300r/min for 25min to obtain mixed emulsion for later use;
(5) and (3) mixing auxiliary agents: and adding the mixed emulsion into the mixture, adding the mixed auxiliary agent, heating and stirring uniformly in a stirrer at a high temperature of 90 ℃, adjusting the temperature to 55 ℃, adding the pigment, the curing agent and the deionized water, and continuously stirring to obtain the coastal building anticorrosive paint.
Wherein, the mixing mass ratio of the bisphenol A type epoxy resin, the isophorone diisocyanate, the polypropylene glycol and the nitropropane in the step (1) is 28: 7: 4.5: 6.5; the mass ratio of the modified epoxy resin to the nano graphene in the step (2) is 51: 4.5; the filler in the step (3) is composed of the following substances in parts by weight: 5 parts of titanium dioxide, 2 parts of silicon dioxide, 3 parts of mica, 2.5 parts of bentonite, 2.5 parts of cerium oxide and 4.5 parts of acetylene black; the mass ratio of the secondary modified epoxy resin to the filler in the step (3) is 7: 2; the mixing mass ratio of the polyacrylate emulsion to the organic fluorine in the step (4) is 13: 2.5; the mixed auxiliary agent in the step (5) comprises the following substances in parts by weight: 2.5 parts of defoaming agent, 2 parts of wetting agent, 1.5 parts of plasticizer and 3.5 parts of silicone surfactant; the mass ratio of the mixed substances in the step (5) is 2.5: 18: 28: 1: 2.5: 14.
Comparative example 1:
the preparation process of the paint comprises the following steps:
(1) modification treatment of epoxy resin: selecting bisphenol A type epoxy resin, mixing isophorone diisocyanate, polypropylene glycol and nitropropane, placing the mixture in a high-pressure reaction kettle, uniformly mixing the mixture at the temperature of 120 ℃ and the pressure of 5Mpa, standing the mixture for 2 hours, and taking the mixture out to obtain modified epoxy resin for later use;
(2) and (3) mixing of fillers: mixing fillers, sintering at high temperature, taking out, grinding, crushing, sieving with a 120-mesh sieve, adding into the modified epoxy resin, heating to 75 ℃, uniformly stirring, continuously heating to 95 ℃, keeping the temperature, and standing for 35min to obtain a mixture for later use;
(3) preparing auxiliary materials: selecting polyacrylate emulsion, mixing with organic fluorine, uniformly mixing at 80 ℃, sealing, and stirring at a high speed of 1300r/min for 25min to obtain mixed emulsion for later use;
(4) and (3) mixing auxiliary agents: and adding the mixed emulsion into the mixture, adding the mixed auxiliary agent, heating and stirring uniformly in a stirrer at a high temperature of 90 ℃, adjusting the temperature to 55 ℃, adding the pigment, the curing agent and the deionized water, and continuously stirring to obtain the coastal building anticorrosive paint.
Wherein, the mixing mass ratio of the bisphenol A type epoxy resin, the isophorone diisocyanate, the polypropylene glycol and the nitropropane in the step (1) is 28: 7: 4.5: 6.5; the filler in the step (2) consists of the following substances in parts by weight: 5 parts of titanium dioxide, 2 parts of silicon dioxide, 3 parts of mica, 2.5 parts of bentonite, 2.5 parts of cerium oxide and 4.5 parts of acetylene black; the mass ratio of the modified epoxy resin to the filler in the step (2) is 7: 2; the mixing mass ratio of the polyacrylate emulsion to the organic fluorine in the step (3) is 13: 2.5; the mixed auxiliary agent in the step (4) comprises the following substances in parts by weight: 2.5 parts of defoaming agent, 2 parts of wetting agent, 1.5 parts of plasticizer and 3.5 parts of silicone surfactant; the mass ratio of the mixed substances in the step (4) is 2.5: 18: 28: 1: 2.5: 14.
Comparative example 2:
a preparation process of a coating comprises the following steps:
(1) modification treatment of epoxy resin: selecting bisphenol A type epoxy resin, mixing isophorone diisocyanate, polypropylene glycol and nitropropane, placing the mixture in a high-pressure reaction kettle, uniformly mixing the mixture at the temperature of 120 ℃ and the pressure of 5Mpa, standing the mixture for 2 hours, and taking the mixture out to obtain modified epoxy resin for later use;
(2) and (3) secondary modification of epoxy resin: taking out the modified epoxy resin, adding the nano graphene, mixing, heating to 145 ℃, uniformly stirring, and standing in a high-voltage electric field for 4min to obtain secondary modified epoxy resin for later use;
(3) and (3) mixing of fillers: mixing fillers, sintering at high temperature, taking out, grinding, crushing, sieving with a 120-mesh sieve, adding into the secondary modified epoxy resin, heating to 75 ℃, uniformly stirring, continuously heating to 95 ℃, keeping the temperature, and standing for 35min to obtain a mixture for later use;
(4) and (3) mixing auxiliary agents: and adding the mixed auxiliary agent into the mixture, heating and stirring the mixture uniformly at a high temperature of 90 ℃ in a stirrer, adjusting the temperature to 55 ℃, adding the pigment, the curing agent and the deionized water, and continuously stirring to obtain the coastal building anticorrosive paint.
Wherein, the mixing mass ratio of the bisphenol A type epoxy resin, the isophorone diisocyanate, the polypropylene glycol and the nitropropane in the step (1) is 28: 7: 4.5: 6.5; the mass ratio of the modified epoxy resin to the nano graphene in the step (2) is 51: 4.5; the filler in the step (3) is composed of the following substances in parts by weight: 5 parts of titanium dioxide, 2 parts of silicon dioxide, 3 parts of mica, 2.5 parts of bentonite, 2.5 parts of cerium oxide and 4.5 parts of acetylene black; the mass ratio of the secondary modified epoxy resin to the filler in the step (3) is 7: 2; the mixed auxiliary agent in the step (4) comprises the following substances in parts by weight: 2.5 parts of defoaming agent, 2 parts of wetting agent, 1.5 parts of plasticizer and 3.5 parts of silicone surfactant; the mass ratio of the mixed materials in the step (4) is 2.5: 28: 1: 2.5: 14.
And (3) detection:
selecting the coatings obtained in the examples 1-3 as experimental groups 1-3, selecting the comparative examples 1-2 as comparison groups 1-2, selecting common outdoor coatings as comparison groups 3, uniformly coating each group of coatings on steel plates with the same specification, drying, and detecting the salt fog resistance of the coatings after 200h, 500h, 1000h, 3000h and 4000h by using a neutral salt fog resistance detection standard GB/T1771-91, wherein the results are shown in the following table (wherein A is the smooth surface of the coatings, does not peel off, B is the trace corrosion on the surface, does not peel off, C is the surface which is in a concave-convex shape and can be touched and does not peel off, a small amount of corrosion exists in the steel plates, and D is the large amount of mottled surfaces, easy to fall off and a large amount of corrosion exists in the steel plates):
the above table shows that the coating prepared by the method has good salt spray resistance and ageing resistance, and the salt spray corrosion resistance of the coating can be improved by the secondary modification treatment of the epoxy resin and the addition of the polyacrylate emulsion mixed with the organic fluorine, so that the coating is suitable for outdoor buildings in coastal cities.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. The preparation process of the coastal building anticorrosive paint is characterized by comprising the following steps of:
(1) modification treatment of epoxy resin: selecting bisphenol A type epoxy resin, mixing isophorone diisocyanate, polypropylene glycol and nitropropane, placing the mixture in a high-pressure reaction kettle, uniformly mixing the mixture at the temperature of 120 ℃ and under the pressure of 4-6Mpa, standing the mixture for 2 hours, and taking the mixture out to obtain modified epoxy resin for later use;
(2) and (3) secondary modification of epoxy resin: taking out the modified epoxy resin, adding the nano graphene, mixing, heating to 140 ℃ and 150 ℃, uniformly stirring, and standing in a high-voltage electric field for 3-5min to obtain secondary modified epoxy resin for later use;
(3) and (3) mixing of fillers: mixing the fillers, sintering at high temperature, taking out, grinding, crushing, sieving with a 120-mesh sieve, adding into the secondary modified epoxy resin, heating to 70-80 ℃, uniformly stirring, continuously heating to 90-100 ℃, preserving heat, and standing for 30-40min to obtain a mixture for later use;
(4) preparing auxiliary materials: selecting polyacrylate emulsion, mixing, adding organic fluorine, uniformly mixing at 80-85 ℃, sealing, and stirring at a high speed of 1200-1400r/min for 20-30min to obtain mixed emulsion for later use;
(5) and (3) mixing auxiliary agents: and adding the mixed emulsion into the mixture, adding the mixed auxiliary agent, heating and uniformly stirring at the high temperature of 90-95 ℃ in a stirrer, adjusting the temperature to 50-60 ℃, adding the pigment, the curing agent and the deionized water, and continuously stirring to obtain the coastal building anticorrosive paint.
2. The preparation process of the coastal building anticorrosive paint according to claim 1, characterized in that: in the step (1), the mixing mass ratio of the bisphenol A type epoxy resin, the isophorone diisocyanate, the polypropylene glycol and the nitropropane is 25-30: 6-8: 4-5: 5-8.
3. The preparation process of the coastal building anticorrosive paint according to claim 1, characterized in that: the mass ratio of the modified epoxy resin to the nano graphene in the step (2) is 50-52: 3-6.
4. The preparation process of the coastal building anticorrosive paint according to claim 1, characterized in that: the filler in the step (3) is composed of the following substances in parts by weight: 4-6 parts of titanium dioxide, 1-3 parts of silicon dioxide, 2-4 parts of mica, 2-3 parts of bentonite, 2-3 parts of cerium oxide and 4-6 parts of acetylene black.
5. The preparation process of the coastal building anticorrosive paint according to claim 1, characterized in that: the mass ratio of the secondary modified epoxy resin to the filler in the step (3) is 6-8: 1-3.
6. The preparation process of the coastal building anticorrosive paint according to claim 1, characterized in that: in the step (4), the mixing mass ratio of the polyacrylate emulsion to the organic fluorine is 12-14: 2-3.
7. The preparation process of the coastal building anticorrosive paint according to claim 1, characterized in that: the mixed auxiliary agent in the step (5) comprises the following substances in parts by weight: 2-3 parts of defoaming agent, 1-3 parts of wetting agent, 1-2 parts of plasticizer and 3-4 parts of organosilicon surfactant.
8. The preparation process of the coastal building anticorrosive paint according to claim 1, characterized in that: the mass ratio of the mixed substances in the step (5) is 2-3: 16-20: 26-30: 0-2: 2-3: 12-16.
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| CN202010534811.5A CN111534208A (en) | 2020-06-12 | 2020-06-12 | Preparation process of coastal building anticorrosive paint |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112608436A (en) * | 2020-12-14 | 2021-04-06 | 武汉材料保护研究所有限公司 | Polyurethane modified graphene microchip and preparation method thereof |
| CN112646479A (en) * | 2020-12-23 | 2021-04-13 | 蚌埠市科达电器有限公司 | Light-weight corrosion-resistant gas leakage monitor |
| WO2023240757A1 (en) * | 2022-06-15 | 2023-12-21 | 青岛大学 | Environment-friendly coating for buildings and preparation method therefor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1566234A (en) * | 2003-07-10 | 2005-01-19 | 浙江化工科技集团有限公司 | Aqueous fluorine paint |
| CN110066593A (en) * | 2019-03-14 | 2019-07-30 | 广西经正科技开发有限责任公司 | A kind of epoxy resin modification polyurethane anticorrosion water paint and preparation method thereof |
-
2020
- 2020-06-12 CN CN202010534811.5A patent/CN111534208A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1566234A (en) * | 2003-07-10 | 2005-01-19 | 浙江化工科技集团有限公司 | Aqueous fluorine paint |
| CN110066593A (en) * | 2019-03-14 | 2019-07-30 | 广西经正科技开发有限责任公司 | A kind of epoxy resin modification polyurethane anticorrosion water paint and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112608436A (en) * | 2020-12-14 | 2021-04-06 | 武汉材料保护研究所有限公司 | Polyurethane modified graphene microchip and preparation method thereof |
| CN112646479A (en) * | 2020-12-23 | 2021-04-13 | 蚌埠市科达电器有限公司 | Light-weight corrosion-resistant gas leakage monitor |
| WO2023240757A1 (en) * | 2022-06-15 | 2023-12-21 | 青岛大学 | Environment-friendly coating for buildings and preparation method therefor |
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