CN115873475B - Solvent-free anticorrosive paint and preparation method thereof - Google Patents
Solvent-free anticorrosive paint and preparation method thereof Download PDFInfo
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- CN115873475B CN115873475B CN202211587648.4A CN202211587648A CN115873475B CN 115873475 B CN115873475 B CN 115873475B CN 202211587648 A CN202211587648 A CN 202211587648A CN 115873475 B CN115873475 B CN 115873475B
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- 239000003973 paint Substances 0.000 title claims abstract description 65
- 238000002360 preparation method Methods 0.000 title abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 62
- 239000003085 diluting agent Substances 0.000 claims abstract description 51
- 239000000049 pigment Substances 0.000 claims abstract description 31
- 239000002270 dispersing agent Substances 0.000 claims abstract description 27
- 239000003822 epoxy resin Substances 0.000 claims abstract description 27
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 27
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- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 24
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- 238000000034 method Methods 0.000 claims description 19
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- 238000000576 coating method Methods 0.000 claims description 17
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 14
- 239000011248 coating agent Substances 0.000 claims description 13
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- 238000002156 mixing Methods 0.000 claims description 11
- 239000002994 raw material Substances 0.000 claims description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 10
- 229910052710 silicon Inorganic materials 0.000 claims description 10
- 239000010703 silicon Substances 0.000 claims description 10
- YUYCVXFAYWRXLS-UHFFFAOYSA-N trimethoxysilane Chemical compound CO[SiH](OC)OC YUYCVXFAYWRXLS-UHFFFAOYSA-N 0.000 claims description 10
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- 238000005342 ion exchange Methods 0.000 claims description 9
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- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 8
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 claims description 8
- UCNNJGDEJXIUCC-UHFFFAOYSA-L hydroxy(oxo)iron;iron Chemical compound [Fe].O[Fe]=O.O[Fe]=O UCNNJGDEJXIUCC-UHFFFAOYSA-L 0.000 claims description 8
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 8
- 235000010215 titanium dioxide Nutrition 0.000 claims description 8
- 229940086542 triethylamine Drugs 0.000 claims description 8
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 6
- PXKLMJQFEQBVLD-UHFFFAOYSA-N bisphenol F Chemical compound C1=CC(O)=CC=C1CC1=CC=C(O)C=C1 PXKLMJQFEQBVLD-UHFFFAOYSA-N 0.000 claims description 6
- 239000004850 liquid epoxy resins (LERs) Substances 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 4
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 3
- 239000000440 bentonite Substances 0.000 claims description 3
- 229910000278 bentonite Inorganic materials 0.000 claims description 3
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 3
- 239000005007 epoxy-phenolic resin Substances 0.000 claims description 3
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 2
- YOBAEOGBNPPUQV-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe].[Fe] YOBAEOGBNPPUQV-UHFFFAOYSA-N 0.000 claims description 2
- 235000012239 silicon dioxide Nutrition 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 239000002253 acid Substances 0.000 abstract description 5
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- 239000007787 solid Substances 0.000 abstract description 3
- 239000000126 substance Substances 0.000 description 26
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 18
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 18
- 239000000243 solution Substances 0.000 description 13
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- 239000012776 electronic material Substances 0.000 description 8
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 8
- 239000010931 gold Substances 0.000 description 8
- 229910052737 gold Inorganic materials 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
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- 235000019832 sodium triphosphate Nutrition 0.000 description 7
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- YBJHBAHKTGYVGT-ZKWXMUAHSA-N (+)-Biotin Chemical compound N1C(=O)N[C@@H]2[C@H](CCCCC(=O)O)SC[C@@H]21 YBJHBAHKTGYVGT-ZKWXMUAHSA-N 0.000 description 2
- JOLVYUIAMRUBRK-UHFFFAOYSA-N 11',12',14',15'-Tetradehydro(Z,Z-)-3-(8-Pentadecenyl)phenol Natural products OC1=CC=CC(CCCCCCCC=CCC=CCC=C)=C1 JOLVYUIAMRUBRK-UHFFFAOYSA-N 0.000 description 2
- YLKVIMNNMLKUGJ-UHFFFAOYSA-N 3-Delta8-pentadecenylphenol Natural products CCCCCCC=CCCCCCCCC1=CC=CC(O)=C1 YLKVIMNNMLKUGJ-UHFFFAOYSA-N 0.000 description 2
- JOLVYUIAMRUBRK-UTOQUPLUSA-N Cardanol Chemical compound OC1=CC=CC(CCCCCCC\C=C/C\C=C/CC=C)=C1 JOLVYUIAMRUBRK-UTOQUPLUSA-N 0.000 description 2
- FAYVLNWNMNHXGA-UHFFFAOYSA-N Cardanoldiene Natural products CCCC=CCC=CCCCCCCCC1=CC=CC(O)=C1 FAYVLNWNMNHXGA-UHFFFAOYSA-N 0.000 description 2
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- PTFIPECGHSYQNR-UHFFFAOYSA-N cardanol Natural products CCCCCCCCCCCCCCCC1=CC=CC(O)=C1 PTFIPECGHSYQNR-UHFFFAOYSA-N 0.000 description 2
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Landscapes
- Paints Or Removers (AREA)
Abstract
The invention provides a solvent-free anticorrosive paint and a preparation method thereof, belonging to the technical field of paint. The solvent-free anticorrosive paint comprises, by weight, 40-50 parts of epoxy resin, 1-5 parts of reactive diluent, 1-2 parts of dispersing agent, 0.1-1 part of leveling agent, 0.1-1 part of defoamer, 35-50 parts of pigment and filler, 0.5-2 parts of coupling agent and 10-30 parts of curing agent; the structural formula of the reactive diluent is shown in formula 1:
Description
Technical Field
The invention relates to the technical field of paint, in particular to a solvent-free anticorrosive paint and a preparation method thereof.
Background
Corrosion protection of metals is a non-negligible problem in today's society, and numerous approaches have been taken to reduce corrosion of metals. Among them, the way of using anticorrosive paint to prevent metal from being corroded is more common. Most of the anticorrosive coatings adopted in the market in the early stage are solvent-type coatings, and the anticorrosive coating has good performance and can achieve the long-term anticorrosive effect. But still have a number of disadvantages. Firstly, most of raw materials adopted in the production process are toxic substances, which threatens staff and environment. And in the process of construction drying, volatilization of an organic solvent can cause damage to the coating such as shrinkage cavity, pinholes, orange peel and the like, so that the performance of the coating is seriously affected. Finally, the paint is easy to have hidden trouble of serious accidents such as explosion and the like in the storage process. In order to meet the increasingly stringent environmental and VOCs regulations, the market is increasingly aware of the importance of environmental coatings.
Solvent-free epoxy coatings are increasingly known to the public as a very representative environment-friendly coating. It has excellent corrosion resistance and basically 0 pollution, and is widely accepted by society. Although the conventional solvent-free epoxy paint overcomes some defects of water-based paint and solvent-based paint, the solvent-free paint has higher viscosity due to the higher viscosity of resin, and the viscosity is higher after powder is added to prepare main paint, so that the construction is not facilitated. And the common epoxy resin has the defects of large internal stress, brittle quality, poor impact and the like after being cured. The main paint viscosity and stress are generally adjusted during production by adding reactive diluents. However, the addition of small amounts of reactive diluents is not sufficient to change viscosity and stress; the addition of an excessive amount of reactive diluent can lead to a drastic decrease in coating performance. This problem severely limits the wide application of solvent-free epoxy coatings in heavy duty applications.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a solvent-free anticorrosive paint with low viscosity and high resistance and a preparation method thereof.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
in a first aspect, the invention provides a solvent-free anticorrosive paint, which comprises the following raw materials in parts by weight: 40-50 parts of epoxy resin, 1-5 parts of reactive diluent, 1-2 parts of dispersing agent, 0.1-1 part of leveling agent, 0.1-1 part of defoamer, 35-50 parts of pigment and filler, 0.5-2 parts of coupling agent and 10-30 parts of curing agent; the method comprises the steps of carrying out a first treatment on the surface of the The structural formula of the reactive diluent is shown in formula 1:
as a preferred embodiment of the solvent-free anticorrosive coating of the invention, the reactive diluent is contained in an amount of 1 to 5 parts by weight.
In the solvent-free anticorrosive paint, the reactive diluent is a monofunctional epoxy reactive diluent, and the trimethoxy silane side chain in the molecule can obviously reduce the viscosity of the product on one hand, and is beneficial to the construction of the solvent-free anticorrosive paint; on the other hand, the coupling effect of the epoxy resin and the curing agent can be effectively improved, the crosslinking density of the product is improved, and the properties of the product, such as adhesive force, impact resistance, acid and alkali resistance, salt water resistance, salt fog resistance and the like, are further improved.
The content of reactive diluent is one of the key factors affecting the product performance; if the content of the reactive diluent is too small, the viscosity and the stress of the product are not changed sufficiently; the addition of an excessive amount of reactive diluent can lead to a drastic decrease in coating performance. The inventors prefer that the content of the reactive diluent is 1 to 5 parts by weight.
As a preferred embodiment of the solvent-free anticorrosive paint of the invention, the preparation method of the reactive diluent comprises the following steps:
s1: reacting epichlorohydrin, 3-allylphenol and a catalyst 1 at 80-120 ℃ to obtain 3-allylphenol glycidyl ether;
s2: and (3) reacting the 3-allylphenol glycidyl ether obtained in the step (S1), the catalyst (2) and trimethoxy hydrosilane at 40-60 ℃ to obtain the reactive diluent.
The reactive diluent of the invention has the reaction process that:
as a preferred embodiment of the solvent-free anticorrosive paint, in the step S1, the molar ratio of the epichlorohydrin to the 3-allylphenol is 2:1-5:1.
As a preferred embodiment of the solvent-free anticorrosive paint of the present invention, in step S1, the catalyst 1 is benzyl triethyl amine chloride; the mass of the catalyst 1 is 0.1-3% of the total mass of epichlorohydrin and 3-allylphenol.
As a preferred embodiment of the solvent-free anticorrosive paint, in the step S2, the molar ratio of the 3-allylphenol glycidyl ether to trimethoxy hydrosilane is 1:1-1:1.5.
As a preferred embodiment of the solvent-free anticorrosive paint of the present invention, in the step S2, the catalyst 2 is platinum (0) -1, 3-divinyl-1, 3-tetramethyldisiloxane; the mass of the catalyst 2 is 10-30% of the total mass of the 3-allylphenol glycidyl ether and trimethoxy hydrosilane.
The reactive diluent obtained by controlling the raw material proportion, the temperature, the time and other parameters in the preparation process of the reactive diluent has relatively good performance, and can exert ideal dilution effect in the whole solvent-free anticorrosive paint.
As a preferred embodiment of the solvent-free anticorrosive coating of the present invention, at least one of the following (a) to (g):
(a) The epoxy resin is at least one of bisphenol A type liquid epoxy resin, bisphenol F type liquid epoxy resin, modified epoxy phenolic resin and functional hyperbranched epoxy resin;
preferably, the bisphenol A type liquid epoxy resin is selected from 128R and 127E of Kunshan Limited of Nanya electronic materials, 828 of Guangzhou Liqian chemical industry Limited, 128 of Hongchang electronic materials, 815 of Guangzhou Libao trade development Limited; the bisphenol F type liquid epoxy resin is selected from 170 of Kunshan limited company of Nanya electronic material, 862 of Van-Mei-Yi chemical industry company of America; the modified epoxy phenolic resin is selected from 8240 of Hensmei company, 2098FS of Yilbu chemical Co., ltd; the functional hyperbranched epoxy resin is selected from EV-2098 of Yierfu chemical Co.
(b) The dispersing agent is at least one of polyurethane dispersing agent and acrylic dispersing agent;
the dispersing agent can effectively disperse the components in the product, so that the components can be uniformly dispersed, and the performance degradation of the product caused by agglomeration is avoided.
(c) The leveling agent is at least one of acrylic leveling agents and organic silicon leveling agents;
the leveling agent can reduce the surface tension of the product, so that the product has good fluidity and leveling property, and meanwhile, the wetting property and the brightening function of the product can be improved.
(d) The defoaming agent is at least one of organic silicon defoaming agents and non-organic silicon defoaming agents;
preferably, the organic silicon defoamer is X680 of Hengshi gold image chemical industry Co., ltd, 750S of Hensmei company; the non-organic silicon defoamer is Dynoadd Taier chemical F-705.
(e) The pigment and filler is at least one of titanium white, iron black, iron red, natural barium sulfate, precipitated barium sulfate, talcum powder, silicon dioxide ion exchange type antirust pigment and bentonite;
(f) The coupling agent is a silane coupling agent; preferably, the silane coupling agent is selected from at least one of KH560 of Nanjing's dawn chemical industry and OFS-6040 of Guangzhou Hui applied New Material Co.
(g) The curing agent is at least one of modified phenolic amine epoxy curing agent and modified alicyclic amine epoxy curing agent.
Specifically, the modified phenolic amine epoxy curing agent is at least one selected from 2003D of Kadli chemical industry Co., ltd, 717 and 715 of conventional biotin-resistant biological material technical material Co., ltd and 2008D of Anhui Meadon biological material Co., ltd; the modified alicyclic amine epoxy curing agent is at least one of R-2259, R-3224-8 and R-3217 of Razithro chemical industry Co., ltd, and 280A of Guangzhou Libao trade development Co.
In a second aspect, a method for preparing the solvent-free anticorrosive paint is provided, comprising the following steps:
s1: uniformly mixing epoxy resin, a dispersing agent, pigment and filler, an active diluent, a defoaming agent, a leveling agent and a coupling agent according to a proportion to obtain main paint;
s2: and (3) uniformly mixing the main paint obtained in the step (S1) with a curing agent in proportion to obtain the solvent-free anticorrosive paint.
As a preferred embodiment of the method for preparing the solvent-free anticorrosive paint, the fineness of the main paint is less than or equal to 60 mu m.
Compared with the prior art, the invention has the beneficial effects that: the solid content of the solvent-free anticorrosive paint is more than 98.5 percent by adding the specific reactive diluent, and the solvent-free anticorrosive paint has the advantages of low viscosity, high adhesive force, impact resistance, acid and alkali resistance, salt fog resistance and good salt water resistance; and the preparation method is simple and is easy for mass production.
Detailed Description
The objects, technical solutions and advantages of the present invention will be further described with reference to specific examples, which are intended to be illustrative of the contents of the present invention in detail, not limiting the present invention. All other embodiments, which can be made by those skilled in the art without the inventive effort, are intended to be within the scope of the present invention. The experimental reagents and instruments involved in the practice of the present invention are common reagents and instruments unless otherwise specified.
The reactive diluent 1 is self-made, and the preparation steps of the product are as follows:
s1: adding epichlorohydrin, 3-allyl phenol and benzyl triethyl amine chloride into a three-neck flask, wherein the molar ratio of the epichlorohydrin to the 3-allyl phenol is 3:1, and the mass of the benzyl triethyl amine chloride is 1% of the total mass of the epichlorohydrin and the 3-allyl phenol; reacting for 1.5h at 100 ℃, cooling to room temperature, and washing the obtained product to obtain 3-allylphenol glycidyl ether;
s2: and (3) dissolving the 3-allylphenol glycidyl ether obtained in the step (S1) in toluene, wherein the volume ratio of the 3-allylphenol glycidyl ether to the toluene is 1:3, so as to obtain a solution 1. And uniformly mixing trimethoxy silane and methanol, wherein the volume ratio of the trimethoxy silane to the methanol is 1:2.4, and obtaining a solution 2.
Adding the solution 1 into a three-neck flask, adding platinum (0) -1, 3-divinyl-1, 3-tetramethyl disiloxane, uniformly mixing, adding the solution 2 drops into the three-neck flask at 50 ℃ for reaction for 1.5 hours, cooling to room temperature, and washing the obtained product to obtain the active diluent. Wherein the molar ratio of the 3-allylphenol glycidyl ether to the trimethoxy silane is 1:1.2, and the mass of the platinum (0) -1, 3-divinyl-1, 3-tetramethyl disiloxane is 20% of the total mass of the 3-allylphenol glycidyl ether and the trimethoxy silane.
The reactive diluent 2 is self-made, and the preparation steps of the product are as follows:
s1: adding epichlorohydrin, 3-allyl phenol and benzyl triethyl amine chloride into a three-neck flask, wherein the molar ratio of the epichlorohydrin to the 3-allyl phenol is 2:1, and the mass of the benzyl triethyl amine chloride is 0.1% of the total mass of the epichlorohydrin and the 3-allyl phenol; reacting for 1h at 80 ℃, cooling to room temperature, and washing the obtained product to obtain the 3-allylphenol glycidyl ether.
S2: dissolving the 3-allylphenol glycidyl ether obtained in the step S1 in toluene, wherein the volume ratio of the 3-allylphenol glycidyl ether to the toluene is 1:3, so as to obtain a solution 1; and uniformly mixing trimethoxy silane and methanol, wherein the volume ratio of the trimethoxy silane to the methanol is 1:2.4, and obtaining a solution 2.
Adding the solution 1 into a three-neck flask, adding platinum (0) -1, 3-divinyl-1, 3-tetramethyl disiloxane, uniformly mixing, adding 2 drops of the solution into the three-neck flask at 40 ℃ for reaction for 1h, cooling to room temperature, and washing the obtained product to obtain an active diluent; wherein, the mol ratio of the 3-allylphenol glycidyl ether to the trimethoxy hydrosilane is 1: the mass of the platinum (0) -1, 3-divinyl-1, 3-tetramethyldisiloxane is 10% of the total mass of the 3-allylphenol glycidyl ether and the trimethoxyhydrosilane.
The reactive diluent 3 is self-made, and the preparation steps of the product are as follows:
s1: adding epichlorohydrin, 3-allyl phenol and benzyl triethyl amine chloride into a three-neck flask, wherein the molar ratio of the epichlorohydrin to the 3-allyl phenol is 5:1, and the mass of the benzyl triethyl amine chloride is 3% of the total mass of the epichlorohydrin and the 3-allyl phenol; reacting for 2 hours at 120 ℃, cooling to room temperature, and washing the obtained product to obtain the 3-allylphenol glycidyl ether.
S2: dissolving the 3-allylphenol glycidyl ether obtained in the step S1 in toluene, wherein the volume ratio of the 3-allylphenol glycidyl ether to the toluene is 1:3, so as to obtain a solution 1; and uniformly mixing trimethoxy silane and methanol, wherein the volume ratio of the trimethoxy silane to the methanol is 1:2.4, and obtaining a solution 2.
Adding the solution 1 into a three-neck flask, adding platinum (0) -1, 3-divinyl-1, 3-tetramethyl disiloxane, uniformly mixing, adding 2 drops of the solution into the three-neck flask at 60 ℃ for reaction for 2 hours, cooling to room temperature, and washing the obtained product to obtain an active diluent; wherein, the mol ratio of the 3-allylphenol glycidyl ether to the trimethoxy hydrosilane is 1:1.5 the mass of platinum (0) -1, 3-divinyl-1, 3-tetramethyldisiloxane was 30% of the total mass of 3-allylphenol glycidyl ether and trimethoxyhydrosilane.
Example 1
The embodiment provides a solvent-free anticorrosive paint, which comprises the following raw materials in parts by weight: 45 parts of epoxy resin, 3 parts of reactive diluent 1, 1.5 parts of dispersing agent, 0.5 part of leveling agent, 0.5 part of defoamer, 43 parts of pigment and filler, 1.2 parts of coupling agent and 20 parts of curing agent;
wherein the epoxy resin is a mixture of 127E of Nanya electronic material Kunshan limited and EV-2098 of Yierfu chemical limited, and the mass ratio of 127E to EV-2098 is 7:3;
the dispersant is polyurethane, 4205, purchased from elvuner polymer, inc;
the leveling agent is L3580 of Changzhou flourishing gold image chemical industry Co., ltd;
the defoamer is 750S of Henschel company;
the pigment and filler consists of 4 parts of titanium dioxide, 0.8 part of iron black, 5 parts of ion exchange type antirust pigment, 5.2 parts of modified aluminum tripolyphosphate, 8 parts of precipitated barium sulfate and 20 parts of silica micropowder;
the coupling agent is KH560 of Nanjing dawn photo chemical industry;
the curing agent is a modified phenolic amine epoxy curing agent, 2003D, purchased from Kadeli chemical Co.
The embodiment also provides a preparation method of the solvent-free anticorrosive paint, which comprises the following steps:
s1: adding epoxy resin, a dispersing agent and bentonite into a reaction kettle, stirring for 10min at the rotating speed of 2500r/min, then adding pigment and filler, heating to 75 ℃ while stirring at the rotating speed of 4000r/min, grinding to the fineness of less than or equal to 60 mu m, then cooling to 30 ℃, adding a reactive diluent, a coupling agent, a defoaming agent and a leveling agent, and stirring uniformly at the rotating speed of 1000r/min to obtain main paint;
s2: and (3) mixing the main paint obtained in the step (S1) with a curing agent in proportion, and stirring for 6min at the rotating speed of 700r/min to obtain the solvent-free anticorrosive paint.
Example 2
The embodiment provides a solvent-free anticorrosive paint, which comprises the following raw materials in parts by weight: 40 parts of epoxy resin, 1 part of reactive diluent 2, 1 part of dispersing agent, 0.3 part of leveling agent, 0.3 part of defoamer, 35 parts of pigment and filler, 0.5 part of coupling agent and 10 parts of curing agent;
wherein, the mass ratio of the epoxy resin to EV-2098 of Kunshan Limited of Nanya electronic material is 4:6;
the dispersant is polyurethane, 4205, purchased from elvuner polymer, inc;
the leveling agent is L3580 of Changzhou flourishing gold image chemical industry Co., ltd;
the defoamer is 750S of Henschel company;
the pigment and filler consists of 4 parts of titanium dioxide, 1 part of iron black, 3 parts of ion exchange type antirust pigment, 4 parts of modified aluminum tripolyphosphate, 5 parts of precipitated barium sulfate and 18 parts of silicon micropowder;
the coupling agent is KH560 of Nanjing dawn photo chemical industry;
the curing agent is a modified phenolic amine epoxy curing agent, 2003D, purchased from Kadeli chemical Co.
The method for preparing the solvent-free anticorrosive paint of the present example is the same as that of example 1.
Example 3
The embodiment provides a solvent-free anticorrosive paint, which comprises the following raw materials in parts by weight: 50 parts of epoxy resin, 5 parts of reactive diluent 3, 2 parts of dispersing agent, 1 part of leveling agent, 1 part of defoamer, 50 parts of pigment and filler, 2 parts of coupling agent and 30 parts of curing agent;
wherein the epoxy resin is a mixture of 127E of Nanya electronic material Kunshan Co., ltd and EV-2098 of Yierfu chemical Co., ltd, and the mass ratio of 127E to EV-2098 is 5:5, a step of;
the dispersant is polyurethane, 4205, purchased from elvuner polymer, inc;
the leveling agent is L3580 of Changzhou flourishing gold image chemical industry Co., ltd;
the defoamer is 750S of Henschel company;
the pigment and filler consists of 7 parts of iron oxide red, 8 parts of ion exchange type antirust pigment, 5 parts of modified aluminum tripolyphosphate, 5 parts of precipitated barium sulfate and 25 parts of silicon micropowder;
the coupling agent is KH560 of Nanjing dawn photo chemical industry;
the curing agent is a modified phenolic amine epoxy curing agent, 2003D, purchased from Kadeli chemical Co.
The method for preparing the solvent-free anticorrosive paint of the present example is the same as that of example 1.
Example 4
The embodiment provides a solvent-free anticorrosive paint, which comprises the following raw materials in parts by weight: 45 parts of epoxy resin, 3 parts of reactive diluent 1, 1.5 parts of dispersing agent, 0.5 part of leveling agent, 0.5 part of defoamer, 43 parts of pigment and filler, 1.2 parts of coupling agent and 20 parts of curing agent;
wherein the epoxy resin is a mixture of 170 of Nanya electronic material Kunshan Co., ltd and 128 of Hongchang electronic material Co., ltd, and the mass ratio of 170 to 128 is 8:2;
the dispersant is polyurethane, 4205, purchased from elvuner polymer, inc;
the leveling agent is L3580 of Changzhou flourishing gold image chemical industry Co., ltd;
the defoamer is 750S of Henschel company;
the pigment and filler consists of 4.5 parts of titanium dioxide, 1 part of iron black, 6 parts of ion exchange type antirust pigment, 5.5 parts of modified aluminum tripolyphosphate, 5 parts of precipitated barium sulfate and 21 parts of silica micropowder;
the coupling agent is KH560 of Nanjing dawn photo chemical industry; the method comprises the steps of carrying out a first treatment on the surface of the
The curing agent is a mixture of modified phenolic amine epoxy curing agents 717 and 715, the mass ratio of 717 to 715 is 1:1, and 717 and 715 are purchased from the company of the technology of the self-mature resistant biological materials.
The method for preparing the solvent-free anticorrosive paint of the present example is the same as that of example 1.
Example 5
The embodiment provides a solvent-free anticorrosive paint, which comprises the following raw materials in parts by weight: 45 parts of epoxy resin, 3 parts of reactive diluent 1, 1.5 parts of dispersing agent, 0.5 part of leveling agent, 0.5 part of defoamer, 43 parts of pigment and filler, 1.2 parts of coupling agent and 20 parts of curing agent;
wherein the epoxy resin is a mixture of 828, 8240 and EV-2098, and the mass ratio of 828, 8240 and EV-2098 is 828:8240: EV-2098=1: 1:1. 828 from Guangzhou power pick rhyme chemical Co., ltd, 8240 from Hensmei, EV-2098 from Yierfu chemical Co., ltd;
the dispersant is polyurethane, 4205, purchased from elvuner polymer, inc;
the leveling agent is L3580 of Changzhou flourishing gold image chemical industry Co., ltd;
the defoamer is 750S of Henschel company;
the pigment and filler consists of 4 parts of titanium dioxide, 0.8 part of iron black, 5 parts of ion exchange type antirust pigment, 5.2 parts of modified aluminum tripolyphosphate, 8 parts of precipitated barium sulfate and 20 parts of silica micropowder;
the coupling agent is KH560 of Nanjing dawn photo chemical industry;
the curing agent is a mixture of 2003D and R-3217, the mass ratio of 2003D to 717 is 5:5, 2003D is purchased from Kadli chemical Co., ltd, and R-3217 is purchased from Raziq chemical Co., ltd.
The method for preparing the solvent-free anticorrosive paint of the present example is the same as that of example 1.
Example 6
The embodiment provides a solvent-free anticorrosive paint, which comprises the following raw materials in parts by weight: 45 parts of epoxy resin, 3 parts of reactive diluent 1, 1.5 parts of dispersing agent, 0.5 part of leveling agent, 0.5 part of defoamer, 43 parts of pigment and filler, 1.2 parts of coupling agent and 20 parts of curing agent;
wherein the epoxy resin is a mixture of 815 and 2098FS, and the mass ratio of 815 to 2098FS is 7:3.
815 from guangzhou libao trade development limited, 2098FS from yierfu chemical limited;
the dispersing agent is a mixture of polyurethane, 4201 and SN-2311, the mass ratio of 4201 to SN-2311 is 1:1, 4201 is purchased from the company of Enfavoner polymer, inc., and SN-2311 is purchased from Shanghai deep bamboo chemical engineering Co., ltd;
the leveling agent is L3580 of Changzhou flourishing gold image chemical industry Co., ltd;
the defoamer is 750S of Henschel company;
the pigment and filler consists of 4 parts of titanium dioxide, 0.8 part of iron black, 5 parts of ion exchange type antirust pigment, 5.2 parts of modified aluminum tripolyphosphate, 8 parts of precipitated barium sulfate and 20 parts of silica micropowder;
the coupling agent is KH560 of Nanjing dawn photo chemical industry;
the curing agent is a mixture of modified phenolic amine epoxy curing agents, the mass ratio of 2003D to 715 is 7:3, 2003D is purchased from Kadeli chemical Co., ltd, and 715 is purchased from a mature resistant biological material technology Co., ltd.
The method for preparing the solvent-free anticorrosive paint of the present example is the same as that of example 1.
Example 7
The embodiment provides a solvent-free anticorrosive paint, which comprises the following raw materials in parts by weight: 45 parts of epoxy resin, 3 parts of reactive diluent 1, 1.5 parts of dispersing agent, 0.5 part of leveling agent, 0.5 part of defoamer, 43 parts of pigment and filler, 1.2 parts of coupling agent and 20 parts of curing agent;
wherein the epoxy resin is a mixture of 128R and 862, and the mass ratio of 128R to 862 is 6:4;128R is purchased from Kunshan, inc. of Nanyan electronic materials, 862 is purchased from Van-Mei-chemical company, USA;
the dispersant is polyurethane, 4205, purchased from elvuner polymer, inc;
the leveling agent is L3580 of Changzhou flourishing gold image chemical industry Co., ltd;
the defoamer is 750S of Henschel company;
the pigment and filler consists of 4 parts of titanium dioxide, 0.8 part of iron black, 5 parts of ion exchange type antirust pigment, 4.2 parts of modified aluminum tripolyphosphate, 4 parts of precipitated barium sulfate and 25 parts of silica micropowder;
the coupling agent is KH560 of Nanjing dawn photo chemical industry;
the curing agent is a modified phenolic amine epoxy curing agent, 2003D, purchased from Kadeli chemical Co., ltd.
The method for preparing the solvent-free anticorrosive paint of the present example is the same as that of example 1.
Comparative example 1
This comparative example provides a solvent-free anticorrosive paint which differs from example 1 only in that: replacing the reactive diluent 1 with a cardanol modified epoxy diluent; the cardanol modified epoxy diluent is 5110 of Shandong Moore chemical industry Co.
Comparative example 2
This comparative example provides a solvent-free anticorrosive paint which differs from example 1 only in that: replacing diluent 1 with a multifunctional reactive diluent; the multifunctional reactive diluent is CHY-277 of Hubeisen metallocene fine chemical industry Co.
Comparative example 3
This comparative example provides a solvent-free anticorrosive paint which differs from example 1 only in that: replacing reactive diluent 1 with a mixture of two monofunctional diluents; one of the monofunctional diluents is 513 of the Kadeli chemical company, inc., and the other monofunctional diluent is 602A of the mature resistant biological materials science and technology Co., ltd; the mass ratio of 513 and 602A mixtures was 8:2.
Performance testing
The solvent-free anticorrosive coatings obtained in examples and comparative examples were subjected to performance tests, and the test items and methods are as follows:
viscosity (in cps): testing the main paint at 26 ℃ by using a Bohler fly rotation viscometer No. 6 rotor;
storage performance: placing the main paint into a 50 ℃ oven for heat storage, and detecting the change of the state of the product every day;
state in the container: visual inspection;
solids content (in%): SY/T0457;
tack coat time (unit h): GB/T1728;
real dry time (unit h): GB/T1728;
adhesion (in MPa): GB/T5210;
impact resistance (8J): SY/T0442;
hot water resistance (90-100 ℃,48h, unit h): GB/T1733;
gasoline resistance (normal temperature, 720h, unit h): SY/T0319;
salt spray resistance (1000 h unit is h): GB/T1771;
acid resistance (720 h at normal temperature, unit is h): GB/T9274A process;
alkali resistance (720 h at normal temperature, unit h): GB/T9274A process;
salt water resistance (720 h at normal temperature, unit h): GB/T9274A process;
the test results are shown in Table 1.
TABLE 1 Performance test results
From the experimental data in table 1, the solvent-free epoxy anticorrosive paint of the invention not only has lower viscosity, but also has the advantages of high adhesive force, impact resistance, acid and alkali resistance, salt fog resistance and good salt water resistance.
Finally, it should be noted that the above-mentioned embodiments illustrate rather than limit the scope of the invention, and that those skilled in the art will understand that the technical scheme of the invention may be modified or equally substituted without departing from the spirit and scope of the technical scheme of the invention.
Claims (9)
1. The solvent-free anticorrosive paint is characterized by comprising the following raw materials in parts by weight: 40-50 parts of epoxy resin, 1-5 parts of reactive diluent, 1-2 parts of dispersing agent, 0.1-1 part of leveling agent, 0.1-1 part of defoamer, 35-50 parts of pigment and filler, 0.5-2 parts of coupling agent and 10-30 parts of curing agent; the structural formula of the reactive diluent is shown in formula 1:
2. the solvent-free anticorrosive coating of claim 1 wherein the reactive diluent is prepared by a process comprising the steps of:
s1: reacting epichlorohydrin, 3-allylphenol and a catalyst 1 at 80-120 ℃ to obtain 3-allylphenol glycidyl ether;
s2: and (3) reacting the 3-allylphenol glycidyl ether obtained in the step (S1), the catalyst (2) and trimethoxy hydrosilane at 40-60 ℃ to obtain the reactive diluent.
3. The solvent-free anticorrosive paint according to claim 2, wherein in step S1, the molar ratio of epichlorohydrin to 3-allylphenol is 2:1 to 5:1.
4. The solvent-free anticorrosive paint according to claim 2, wherein in step S1, the catalyst 1 is benzyl triethyl amine chloride; the mass of the catalyst 1 is 0.1-3% of the total mass of epichlorohydrin and 3-allylphenol.
5. The solvent-free anticorrosive coating according to claim 2, wherein in step S2, the molar ratio of 3-allylphenol glycidyl ether to trimethoxysilane is 1:1 to 1:1.5.
6. The solvent-free anticorrosive coating according to claim 2, wherein in step S2, the catalyst 2 is platinum (0) -1, 3-divinyl-1, 3-tetramethyldisiloxane; the mass of the catalyst 2 is 10-30% of the total mass of the 3-allylphenol glycidyl ether and trimethoxy hydrosilane.
7. The solvent-free anticorrosive coating of claim 1, wherein at least one of the following (a) - (g):
(a) The epoxy resin is at least one of bisphenol A type liquid epoxy resin, bisphenol F type liquid epoxy resin, modified epoxy phenolic resin and functional hyperbranched epoxy resin;
(b) The dispersing agent is at least one of polyurethane dispersing agent and acrylic dispersing agent;
(c) The leveling agent is at least one of acrylic leveling agents and organic silicon leveling agents;
(d) The defoaming agent is at least one of organic silicon defoaming agents and non-organic silicon defoaming agents;
(e) The pigment and filler is at least one of titanium white, iron black, iron red, natural barium sulfate, precipitated barium sulfate, talcum powder, silicon dioxide ion exchange type antirust pigment and bentonite;
(f) The coupling agent is a silane coupling agent;
(g) The curing agent is at least one of modified phenolic amine epoxy curing agent and modified alicyclic amine epoxy curing agent.
8. A method of preparing a solvent-free anticorrosive coating according to any one of claims 1 to 7, comprising the steps of:
s1: uniformly mixing epoxy resin, a dispersing agent, pigment and filler, an active diluent, a defoaming agent, a leveling agent and a coupling agent according to a proportion to obtain main paint;
s2: and (3) uniformly mixing the main paint obtained in the step (S1) with a curing agent in proportion to obtain the solvent-free anticorrosive paint.
9. The method according to claim 8, wherein the fineness of the main paint is 60 μm or less.
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| US6439698B1 (en) * | 2000-01-14 | 2002-08-27 | Lexmark International, Inc | Dual curable encapsulating material |
| CN106519913A (en) * | 2016-12-08 | 2017-03-22 | 绵阳惠利环氧工程有限公司 | Method for improving bonding capacity of epoxy resin prime coat composite and epoxy resin prime coat composite with high bonding capacity |
| CN113462261A (en) * | 2021-07-28 | 2021-10-01 | 绵阳惠利环氧工程有限公司 | Semitransparent closed solvent-free epoxy primer coating compound |
| CN113480564A (en) * | 2021-08-05 | 2021-10-08 | 江南大学 | Organic silicon modified eugenol-based epoxy diluent, preparation method and application thereof |
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