CN117264111A - Epoxy siloxane modified acrylic resin and preparation method of finish paint - Google Patents
Epoxy siloxane modified acrylic resin and preparation method of finish paint Download PDFInfo
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- CN117264111A CN117264111A CN202311142309.XA CN202311142309A CN117264111A CN 117264111 A CN117264111 A CN 117264111A CN 202311142309 A CN202311142309 A CN 202311142309A CN 117264111 A CN117264111 A CN 117264111A
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- acrylic resin
- modified acrylic
- epoxy siloxane
- epoxysiloxane
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- 239000004925 Acrylic resin Substances 0.000 title claims abstract description 43
- 229920000178 Acrylic resin Polymers 0.000 title claims abstract description 43
- 239000004593 Epoxy Substances 0.000 title claims abstract description 35
- 239000003973 paint Substances 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title abstract description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000002904 solvent Substances 0.000 claims abstract description 18
- 239000003999 initiator Substances 0.000 claims abstract description 13
- -1 polysiloxane Polymers 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000003054 catalyst Substances 0.000 claims abstract description 11
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000178 monomer Substances 0.000 claims abstract description 10
- 239000000049 pigment Substances 0.000 claims abstract description 10
- 239000011347 resin Substances 0.000 claims abstract description 10
- 229920005989 resin Polymers 0.000 claims abstract description 10
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 7
- MABAWBWRUSBLKQ-UHFFFAOYSA-N ethenyl-tri(propan-2-yloxy)silane Chemical compound CC(C)O[Si](OC(C)C)(OC(C)C)C=C MABAWBWRUSBLKQ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 7
- UDUKMRHNZZLJRB-UHFFFAOYSA-N triethoxy-[2-(7-oxabicyclo[4.1.0]heptan-4-yl)ethyl]silane Chemical compound C1C(CC[Si](OCC)(OCC)OCC)CCC2OC21 UDUKMRHNZZLJRB-UHFFFAOYSA-N 0.000 claims abstract description 7
- HQYALQRYBUJWDH-UHFFFAOYSA-N trimethoxy(propyl)silane Chemical compound CCC[Si](OC)(OC)OC HQYALQRYBUJWDH-UHFFFAOYSA-N 0.000 claims abstract description 7
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 claims abstract description 6
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 5
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims abstract description 5
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims description 18
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 15
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical group CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 8
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 5
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- 239000002270 dispersing agent Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 2
- 239000012963 UV stabilizer Substances 0.000 claims description 2
- 239000006096 absorbing agent Substances 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 claims description 2
- 239000004408 titanium dioxide Substances 0.000 claims description 2
- 238000009736 wetting Methods 0.000 claims description 2
- 239000000654 additive Substances 0.000 claims 1
- 230000000996 additive effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 5
- 229920001296 polysiloxane Polymers 0.000 abstract description 5
- 239000011248 coating agent Substances 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 abstract description 3
- 239000000945 filler Substances 0.000 abstract description 3
- 238000000227 grinding Methods 0.000 abstract description 3
- 239000006185 dispersion Substances 0.000 abstract description 2
- 238000002715 modification method Methods 0.000 abstract description 2
- 239000003607 modifier Substances 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000003786 synthesis reaction Methods 0.000 abstract description 2
- 238000013008 moisture curing Methods 0.000 abstract 1
- 239000008096 xylene Substances 0.000 description 4
- 229920000180 alkyd Polymers 0.000 description 2
- 239000013530 defoamer Substances 0.000 description 2
- 125000005375 organosiloxane group Chemical group 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- HMUNWXXNJPVALC-UHFFFAOYSA-N 1-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)C(CN1CC2=C(CC1)NN=N2)=O HMUNWXXNJPVALC-UHFFFAOYSA-N 0.000 description 1
- 229910017061 Fe Co Inorganic materials 0.000 description 1
- 229910018557 Si O Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910002808 Si–O–Si Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- QHIWVLPBUQWDMQ-UHFFFAOYSA-N butyl prop-2-enoate;methyl 2-methylprop-2-enoate;prop-2-enoic acid Chemical compound OC(=O)C=C.COC(=O)C(C)=C.CCCCOC(=O)C=C QHIWVLPBUQWDMQ-UHFFFAOYSA-N 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- MOUPNEIJQCETIW-UHFFFAOYSA-N lead chromate Chemical compound [Pb+2].[O-][Cr]([O-])(=O)=O MOUPNEIJQCETIW-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Inorganic materials [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/14—Methyl esters, e.g. methyl (meth)acrylate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/42—Introducing metal atoms or metal-containing groups
-
- 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
- C09D143/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Coating compositions based on derivatives of such polymers
- C09D143/04—Homopolymers or copolymers of monomers containing silicon
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a preparation method of epoxy siloxane modified acrylic resin and a finish paint. The epoxy polysiloxane modified acrylic resin is synthesized by taking styrene, methyl methacrylate, butyl acrylate, acrylic acid, vinyl triisopropoxy silane and the like as monomers, di-tert-butyl peroxide as an initiator and beta- (3, 4-epoxycyclohexyl) ethyl triethoxysilane and gamma-glycidyl ether propyl trimethoxysilane as a modifier, and adopting a specific raw material ratio through a chemical synthesis modification method under the condition of a catalyst. The resin is used as base material, and the base material is mixed with pigment, filler, solvent and auxiliary agent to prepare the paint through the procedures of dispersion, grinding and the like. Compared with the common organosilicon modified acrylic resin, the epoxy siloxane modified acrylic resin has the advantages of cost advantage, is a single-component coating, has the characteristics of simple construction process and the like, and has long service life and longer weather resistance after moisture curing of a paint film.
Description
Technical Field
The invention belongs to the technical field of paint, and particularly relates to epoxy siloxane modified acrylic resin and a preparation method of finish paint.
Background
At present, the outdoor weather-proof paint is mainly applied to alkyd resins, acrylic resins and the like, and the weather resistance of the paint is maintained at about 2-3 years. The organosilicon siloxane resin takes Si-O-Si as a main chain. Since the bond energy of Si-O bond (450 kJ/mol) is larger than the bond energy of ordinary organic polymer C-C bond (345 kJ/mo 1) and the bond energy of C-O bond (351 kJ/mol), the silicone resin has excellent heat resistance and ultraviolet aging resistance. Pure organosiloxane resins are costly and therefore alkyd, acrylic, etc. resins are often used to modify organosiloxane resins. The compatibility of the siloxane and the acrylic resin is good, polysiloxane containing active groups (such as-OH) and the acrylic resin containing active groups (such as-OH, -COOH) are often adopted for condensation modification, and the weather resistance and the adhesive force performance of the polysiloxane and the acrylic resin are combined.
The practical service life of the siloxane modified acrylic resin paint commonly used in the market is generally 5-8 years, and a paint film can be corroded and damaged. The conventional siloxane modified acrylic resin paint modified by the method generally needs to be matched with a curing agent for use, is a two-component paint, and is relatively complicated in construction. At present, the labor cost is high, and frequent paint construction, maintenance and the like are easy to cause environmental pollution, so that the problems of safety and environmental protection are caused. Therefore, the epoxy polysiloxane modified acrylic resin coating with simple construction process, long service life and longer weather resistance is more favored.
Disclosure of Invention
The invention aims to provide an epoxy siloxane modified acrylic resin and a preparation method of a finish paint aiming at the problems of the technology.
The aim of the invention can be achieved by the following technical scheme:
the high-performance epoxy siloxane modified acrylic resin comprises the following components in parts by weight:
the technical scheme is as follows: the resin consists of 36-55 parts of acrylic ester monomer, 2-6 parts of vinyl triisopropoxy silane, 1.5-2.5 parts of initiator, 1-5 parts of epoxy siloxane, 0.08-0.2 part of catalyst and 20-25 parts of solvent;
preferably: the mass ratio of the acrylic ester monomer is 5-8: 20-30: 10 to 18: styrene, methyl methacrylate, butyl acrylate and acrylic acid 0.5-1.
The technical scheme is as follows: the initiator is selected from one or more of di-tert-butyl peroxide and dicumyl peroxide.
The technical scheme is as follows: the epoxy siloxane is selected from one or more of beta- (3, 4-epoxycyclohexyl) ethyl triethoxysilane and gamma-glycidyl ether propyl trimethoxysilane;
preferably: the epoxy siloxane is beta- (3, 4-epoxycyclohexyl) ethyl triethoxysilane and gamma-glycidyl ether propyl trimethoxysilane with the mass ratio of 1-2.5:0.5-1.2.
The technical scheme is as follows: the catalyst is one or more selected from triethylamine and triethanolamine;
preferably: the catalyst comprises triethylamine and triethanolamine with the mass ratio of 0.03-0.06:0.07-0.2.
The preparation method of the epoxy siloxane modified acrylic resin comprises the following steps:
the first step: introducing nitrogen into a reaction bottle, putting part of the solvent of the components into the reaction bottle, heating, refluxing and dehydrating, then cooling to 120-130 ℃, slowly and uniformly adding mixed solution of acrylic ester monomers and part of initiator, and carrying out heat preservation reaction for 1-3 h under the temperature condition;
and a second step of: uniformly mixing vinyl triisopropoxy silane, the rest of solvent and initiator, slowly and uniformly adding the mixture into a reaction bottle at the temperature of 120-130 ℃, and continuously preserving heat for 1-3 h after the addition; and adding the epoxysiloxane and the catalyst of the components into a reaction bottle under the temperature condition, and continuously maintaining the heat preservation reaction until the acid value is less than 5mgKOH/g, thereby obtaining the epoxysiloxane modified acrylic resin.
A weather-resistant finishing paint prepared by using the epoxy siloxane modified acrylic resin prepared by the method as a base material comprises the following components:
the pigment is one or more selected from titanium dioxide, barium sulfate, iron oxide series, aluminum powder, zinc oxide and the like; the auxiliary agent is at least one selected from pigment wetting dispersant, flatting agent, UV stabilizer and UV absorber; the solvent is dimethylbenzene.
The technical scheme of the invention is as follows: 40-60 parts of epoxy siloxane modified acrylic resin, 15-30 parts of pigment, 0.1-1 part of auxiliary agent and 8-12 parts of solvent.
The method for preparing the finishing paint by using the epoxy siloxane modified acrylic resin as a base material comprises the steps of uniformly mixing the epoxy siloxane modified acrylic resin with required pigment, filler, auxiliary agent and solvent, dispersing, grinding to fineness of below 20 microns, filtering and packaging to obtain the finished epoxy siloxane modified acrylic finishing paint.
The invention has the beneficial effects that:
the epoxy polysiloxane modified acrylic resin is synthesized by taking styrene, methyl methacrylate, butyl acrylate, acrylic acid, vinyl triisopropoxy silane and the like as monomers, di-tert-butyl peroxide as an initiator and beta- (3, 4-epoxycyclohexyl) ethyl triethoxysilane and gamma-glycidyl ether propyl trimethoxysilane as a modifier, and adopting a specific raw material ratio through a chemical synthesis modification method under the condition of a catalyst. The resin is used as base material, and the base material is mixed with pigment, filler, solvent and auxiliary agent to prepare the paint through the procedures of dispersion, grinding and the like. Compared with the pure organic silicon resin, the epoxy siloxane modified acrylic resin has the advantages of cost advantage, is a single-component coating compared with the common organic silicon modified acrylic resin, has the characteristics of simple construction process and the like, and has long service life and longer weather resistance after moisture of a paint film is cured.
Detailed Description
The invention is further illustrated below with reference to examples, but the scope of the invention is not limited thereto:
the epoxy siloxane modified acrylic resin adopts the formula components and the mass percentages of the formula components are shown in the table I.
The preparation methods of the epoxy siloxane-modified acrylic resins of the present invention, examples 1 to 3, are as follows:
introducing nitrogen into a reaction bottle for 10 minutes, putting part of the xylene solvent of the components into the reaction bottle, heating, refluxing and dehydrating, cooling to 125 ℃ after water is completely removed, and keeping the temperature constant. Uniformly mixing the acrylic ester monomers such as styrene, methyl methacrylate, butyl acrylate, acrylic acid and the like with part of di-tert-butyl peroxide initiator, slowly and uniformly adding the mixed solution of the acrylic ester monomers and part of the initiator at the temperature of 125 ℃, and carrying out heat preservation reaction for 2 hours at the temperature;
uniformly mixing vinyl triisopropoxy silane, the rest of xylene solvent and the di-tert-butyl peroxide initiator, slowly and uniformly adding the mixture into a reaction bottle at the temperature of 125 ℃, and continuously preserving the heat for 2 hours after the addition is finished. And adding the beta- (3, 4-epoxycyclohexyl) ethyl triethoxysilane and gamma-glycidyl ether propyl trimethoxysilane of the components, a catalyst triethylamine and triethanolamine into a reaction bottle under the temperature condition, and continuously maintaining the heat preservation reaction until the acid value is less than 5mgKOH/g, thus obtaining the epoxysiloxane modified acrylic resin.
List one
The specific parameters of the prepared epoxy siloxane modified acrylic resin are shown in the table II.
Watch II
| Sequence number | Project | Example 1 | Example 2 | Example 3 |
| 1 | Clarity and transparency | Clear and transparent | Clear and transparent | Clear and transparent |
| 2 | Color (Fe-Co method), number | 2 | 2 | 2 |
| 3 | Viscosity (grizzly tube/25 ℃), s | 52 | 47 | 56 |
| 4 | Acid value, mgKOH/g | 3.7 | 4.1 | 3.5 |
| 5 | Fineness, μm | 15 | 15 | 15 |
Example 4 the epoxy siloxane modified acrylic resin prepared in example 1 was mixed with 20% rutile titanium dioxide, 10% zinc oxide, 9.4% xylene solvent, 0.5% dispersant and 0.1% defoamer uniformly, dispersed, ground to a fineness of less than 20 μm, filtered and packaged to obtain the finished epoxy siloxane modified acrylic weatherable finish. The board was sprayed or brushed and cured at room temperature for 7 days to test the performance, see Table III.
Example 5 the epoxy siloxane modified acrylic resin prepared in example 3 was mixed with 20% chrome yellow, 10% barium sulfate, 9.4% xylene solvent, 0.5% dispersant and 0.1% defoamer uniformly, dispersed, ground to a fineness of less than 20 μm, filtered and packaged to obtain the finished epoxy siloxane modified acrylic weatherable finish. The board was sprayed or brushed and cured at room temperature for 7 days to test the performance, see Table III.
Performance index of epitrioxocone modified acrylic paint
Claims (9)
1. A high-performance epoxy siloxane modified acrylic resin is characterized in that: the resin consists of the following components in parts by weight:
2. the epoxysiloxane-modified acrylic resin according to claim 1, wherein: the resin consists of 36-55 parts of acrylic ester monomer, 2-6 parts of vinyl triisopropoxy silane, 1.5-2.5 parts of initiator, 1-5 parts of epoxy siloxane, 0.08-0.2 part of catalyst and 20-25 parts of solvent;
preferably: the mass ratio of the acrylic ester monomer is 5-8: 20-30: 10 to 18: styrene, methyl methacrylate, butyl acrylate and acrylic acid 0.5-1.
3. The epoxysiloxane-modified acrylic resin according to claim 1 or 2, characterized in that: the initiator is selected from one or more of di-tert-butyl peroxide and dicumyl peroxide.
4. The epoxysiloxane-modified acrylic resin according to claim 1 or 2, characterized in that: the epoxy siloxane is selected from one or more of beta- (3, 4-epoxycyclohexyl) ethyl triethoxysilane and gamma-glycidyl ether propyl trimethoxysilane;
preferably: the epoxy siloxane is beta- (3, 4-epoxycyclohexyl) ethyl triethoxysilane and gamma-glycidyl ether propyl trimethoxysilane with the mass ratio of 1-2.5:0.5-1.2.
5. The epoxysiloxane-modified acrylic resin according to claim 1 or 2, characterized in that: the catalyst is one or more selected from triethylamine and triethanolamine;
preferably: the catalyst comprises triethylamine and triethanolamine with the mass ratio of 0.03-0.06:0.07-0.2.
6. A method for preparing the epoxysiloxane-modified acrylic resin according to claim 1, which is characterized in that: the method comprises the following steps:
the first step: introducing nitrogen into a reaction bottle, putting part of the solvent of the components into the reaction bottle, heating, refluxing and dehydrating, then cooling to 120-130 ℃, slowly and uniformly adding mixed solution of acrylic ester monomers and part of initiator, and carrying out heat preservation reaction for 1-3 h under the temperature condition;
and a second step of: uniformly mixing vinyl triisopropoxy silane, the rest of solvent and initiator, slowly and uniformly adding the mixture into a reaction bottle at the temperature of 120-130 ℃, and continuously preserving heat for 1-3 h after the addition; and adding the epoxysiloxane and the catalyst of the components into a reaction bottle under the temperature condition, and continuously maintaining the heat preservation reaction until the acid value is less than 5mgKOH/g, thereby obtaining the epoxysiloxane modified acrylic resin.
7. A weather-resistant finishing paint prepared by using the epoxy siloxane modified acrylic resin prepared by the method of claim 6 as a base material, wherein the finishing paint comprises the following components:
the pigment is one or more selected from titanium dioxide, barium sulfate, iron oxide series, aluminum powder, zinc oxide and the like; the auxiliary agent is at least one selected from pigment wetting dispersant, flatting agent, UV stabilizer and UV absorber; the solvent is dimethylbenzene.
8. The weatherable topcoat made from the epoxysiloxane-modified acrylic resin as defined in claim 7, characterized by: 40-60 parts of epoxy siloxane modified acrylic resin, 15-30 parts of pigment, 0.1-1 part of auxiliary agent and 8-12 parts of solvent.
9. A method of making a topcoat made from the epoxysiloxane-modified acrylic resin as defined in claim 7, characterized by: the epoxy siloxane modified acrylic resin, the required pigment, the required additive and the required solvent are uniformly mixed, dispersed and ground to fineness below 20 microns, filtered and packaged to obtain the finished epoxy siloxane modified acrylic finish paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311142309.XA CN117264111A (en) | 2023-09-06 | 2023-09-06 | Epoxy siloxane modified acrylic resin and preparation method of finish paint |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311142309.XA CN117264111A (en) | 2023-09-06 | 2023-09-06 | Epoxy siloxane modified acrylic resin and preparation method of finish paint |
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| Publication Number | Publication Date |
|---|---|
| CN117264111A true CN117264111A (en) | 2023-12-22 |
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|---|---|---|---|
| CN202311142309.XA Pending CN117264111A (en) | 2023-09-06 | 2023-09-06 | Epoxy siloxane modified acrylic resin and preparation method of finish paint |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118725181A (en) * | 2024-06-03 | 2024-10-01 | 江苏苏博特新材料股份有限公司 | Vinyl epoxysiloxane modified acrylic resin and preparation method thereof, weather-resistant topcoat and preparation method thereof |
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2023
- 2023-09-06 CN CN202311142309.XA patent/CN117264111A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118725181A (en) * | 2024-06-03 | 2024-10-01 | 江苏苏博特新材料股份有限公司 | Vinyl epoxysiloxane modified acrylic resin and preparation method thereof, weather-resistant topcoat and preparation method thereof |
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