CN109517502B - Method for preparing anti-cracking unsaturated polyester paint - Google Patents
Method for preparing anti-cracking unsaturated polyester paint Download PDFInfo
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- CN109517502B CN109517502B CN201811409370.5A CN201811409370A CN109517502B CN 109517502 B CN109517502 B CN 109517502B CN 201811409370 A CN201811409370 A CN 201811409370A CN 109517502 B CN109517502 B CN 109517502B
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- cracking
- paint
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- 239000003973 paint Substances 0.000 title claims abstract description 53
- 238000005336 cracking Methods 0.000 title claims abstract description 29
- 229920006305 unsaturated polyester Polymers 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 21
- 238000005303 weighing Methods 0.000 claims abstract description 21
- 239000000945 filler Substances 0.000 claims abstract description 17
- 239000003085 diluting agent Substances 0.000 claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 239000003999 initiator Substances 0.000 claims abstract description 5
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 40
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 39
- 239000000843 powder Substances 0.000 claims description 38
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 20
- 239000002244 precipitate Substances 0.000 claims description 18
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 16
- 238000005406 washing Methods 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 15
- 229920006337 unsaturated polyester resin Polymers 0.000 claims description 15
- PXIPVTKHYLBLMZ-UHFFFAOYSA-N Sodium azide Chemical compound [Na+].[N-]=[N+]=[N-] PXIPVTKHYLBLMZ-UHFFFAOYSA-N 0.000 claims description 14
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 239000012752 auxiliary agent Substances 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 12
- 238000004108 freeze drying Methods 0.000 claims description 12
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 12
- 239000000347 magnesium hydroxide Substances 0.000 claims description 12
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 12
- 239000004408 titanium dioxide Substances 0.000 claims description 10
- 229920005610 lignin Polymers 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 8
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 claims description 8
- 239000012153 distilled water Substances 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 7
- OEOIWYCWCDBOPA-UHFFFAOYSA-N 6-methyl-heptanoic acid Chemical compound CC(C)CCCCC(O)=O OEOIWYCWCDBOPA-UHFFFAOYSA-N 0.000 claims description 6
- 239000002518 antifoaming agent Substances 0.000 claims description 6
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 6
- ZLNAFSPCNATQPQ-UHFFFAOYSA-N ethenyl-dimethoxy-methylsilane Chemical compound CO[Si](C)(OC)C=C ZLNAFSPCNATQPQ-UHFFFAOYSA-N 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 6
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims description 5
- 239000002270 dispersing agent Substances 0.000 claims description 5
- NUFVQEIPPHHQCK-UHFFFAOYSA-N ethenyl-methoxy-dimethylsilane Chemical group CO[Si](C)(C)C=C NUFVQEIPPHHQCK-UHFFFAOYSA-N 0.000 claims description 5
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 claims description 4
- CYNYIHKIEHGYOZ-UHFFFAOYSA-N 1-bromopropane Chemical compound CCCBr CYNYIHKIEHGYOZ-UHFFFAOYSA-N 0.000 claims description 4
- WFUGQJXVXHBTEM-UHFFFAOYSA-N 2-hydroperoxy-2-(2-hydroperoxybutan-2-ylperoxy)butane Chemical compound CCC(C)(OO)OOC(C)(CC)OO WFUGQJXVXHBTEM-UHFFFAOYSA-N 0.000 claims description 4
- GLISZRPOUBOZDL-UHFFFAOYSA-N 3-bromopropyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)CCCBr GLISZRPOUBOZDL-UHFFFAOYSA-N 0.000 claims description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 4
- 229910021595 Copper(I) iodide Inorganic materials 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M acrylate group Chemical group C(C=C)(=O)[O-] NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- LSXDOTMGLUJQCM-UHFFFAOYSA-M copper(i) iodide Chemical compound I[Cu] LSXDOTMGLUJQCM-UHFFFAOYSA-M 0.000 claims description 4
- 239000003112 inhibitor Substances 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 238000004806 packaging method and process Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 238000006116 polymerization reaction Methods 0.000 claims description 4
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 4
- 238000001291 vacuum drying Methods 0.000 claims description 4
- UICXTANXZJJIBC-UHFFFAOYSA-N 1-(1-hydroperoxycyclohexyl)peroxycyclohexan-1-ol Chemical compound C1CCCCC1(O)OOC1(OO)CCCCC1 UICXTANXZJJIBC-UHFFFAOYSA-N 0.000 claims description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
- 238000007605 air drying Methods 0.000 claims description 3
- 239000011575 calcium Substances 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
- GEMHFKXPOCTAIP-UHFFFAOYSA-N n,n-dimethyl-n'-phenylcarbamimidoyl chloride Chemical compound CN(C)C(Cl)=NC1=CC=CC=C1 GEMHFKXPOCTAIP-UHFFFAOYSA-N 0.000 claims description 3
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 3
- NKFIBMOQAPEKNZ-UHFFFAOYSA-N 5-amino-1h-indole-2-carboxylic acid Chemical compound NC1=CC=C2NC(C(O)=O)=CC2=C1 NKFIBMOQAPEKNZ-UHFFFAOYSA-N 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000006229 carbon black Substances 0.000 claims description 2
- 238000012986 modification Methods 0.000 claims description 2
- 230000004048 modification Effects 0.000 claims description 2
- 238000000227 grinding Methods 0.000 claims 2
- 238000001556 precipitation Methods 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 18
- 238000012360 testing method Methods 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 238000001035 drying Methods 0.000 description 7
- 238000002360 preparation method Methods 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000011777 magnesium Substances 0.000 description 4
- 239000002023 wood Substances 0.000 description 4
- 238000009472 formulation Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000011094 fiberboard Substances 0.000 description 1
- 238000009775 high-speed stirring Methods 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- GRVDJDISBSALJP-UHFFFAOYSA-N methyloxidanyl Chemical group [O]C GRVDJDISBSALJP-UHFFFAOYSA-N 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 238000010951 particle size reduction Methods 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/06—Unsaturated polyesters having carbon-to-carbon unsaturation
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/2224—Magnesium hydroxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paints Or Removers (AREA)
- Macromonomer-Based Addition Polymer (AREA)
Abstract
The invention relates to a method for manufacturing anti-cracking unsaturated polyester paint, which comprises the steps of preparing modified filler, preparing and preparing raw materials of main paint, weighing and subpackaging, wherein the anti-cracking unsaturated polyester paint comprises 100 parts of main paint, 1.5-2.5 parts of initiator, 1-2 parts of accelerator and 30-40 parts of diluent, and the main paint comprises anti-cracking agent and modified filler.
Description
Technical Field
The invention relates to the field of unsaturated polyester paint, in particular to a method for manufacturing anti-cracking unsaturated polyester paint.
Background
The unsaturated polyester coating, namely UPE coating, is a coating which takes air-drying type unsaturated polyester resin as a main film forming substance, can be made into solvent-free coating, has the characteristics of low VOC, high solid content, good fullness and filling effect, has high film hardness, aging resistance, corrosion resistance, easy adjustment and easy spraying, can obtain thicker coating by one-time coating, has high construction efficiency, is suitable for furniture made of solid wood, plywood and paper furniture, shaving boards and medium density fiber boards, can improve the hardness of finish paint, can reduce the using amount of the finish paint, has high quality, low consumption, time saving, low pollution and incomparable excellent comprehensive performance of PU polyester primer, and is favored by more consumers.
The unsaturated polyester paint has the defects that the shrinkage rate of a paint film is large during curing, the adhesion to a base material is easy to cause problems, the paint film is easy to crack after being dried because of thick one-time construction, thick paint is easy to accumulate at the concave part of a groove during coating on woodware, and the paint film is easy to crack after being dried, so that reworking is caused, and the production efficiency is influenced.
Disclosure of Invention
In order to solve the problems, the invention provides a method for manufacturing anti-cracking unsaturated polyester paint.
The purpose of the invention is realized by adopting the following technical scheme: a method for manufacturing an anti-cracking unsaturated polyester paint comprises the following steps:
s1: preparing modified filler, and modifying the surface of lignin with modified nano magnesium hydroxide;
s2: preparing a main paint raw material, wherein the main paint comprises 40-50 parts of unsaturated polyester resin, 25-45 parts of modified filler, 0-15 parts of calcium carbonate powder, 5-8 parts of titanium dioxide, 2-6 parts of anti-cracking agent, 1-3 parts of auxiliary agent and 2-4 parts of styrene;
s3: preparing a main paint, firstly dispersing and mixing unsaturated polyester resin, an auxiliary agent and part of styrene at a high speed, then adding a modified filler, calcium carbonate powder, titanium dioxide and an anti-cracking agent, dispersing and mixing at a high speed, and uniformly stirring with the rest of styrene;
s4: weighing and packaging, namely weighing and packaging 100 parts of main paint, 1.5-2.5 parts of initiator, 1-2 parts of accelerator and 30-40 parts of diluent respectively;
preferably, the unsaturated polyester resin is an air-drying type unsaturated polyester resin with the solid content of 73-78% and the viscosity of 2000-2600 CPS;
preferably, the anti-cracking agent is dimethylvinylmethoxysilane or methylvinyldimethoxysilane or a mixture of the dimethylvinylmethoxysilane and the methylvinyldimethoxysilane;
preferably, the auxiliary agent is at least one of a defoaming agent, a dispersing agent, an anti-settling agent, a leveling agent, a polymerization inhibitor and a polishing auxiliary agent;
further preferably, the defoaming agent is an acrylate defoaming agent, preferably BYK057, the dispersing agent is a polymer dispersing agent, preferably EFKA4010, the anti-settling agent is white carbon black, preferably M-5, the leveling agent is an acrylate leveling agent, preferably EFKA3777, the polymerization inhibitor is 5 wt% of hydroquinone, and the polishing auxiliary agent is zinc stearate;
preferably, the initiator is 10% wt. methyl ethyl ketone peroxide or cyclohexanone peroxide;
preferably, the accelerator is one of cobalt isooctanoate, calcium isooctanoate, cobalt naphthenate and calcium naphthenate;
preferably, the diluent is 15-30% of styrene, 35-45% of butyl acetate and 35-40% of toluene.
The invention has the beneficial effects that: by adding dimethylvinylmethoxysilane or methylvinyldimethoxysilane as an anti-cracking agent, when resin is cured to form a film, vinyl unsaturated bonds participate in curing film-forming copolymerization of unsaturated polyester, and flexible groups and polymers thereof are introduced to enhance the flexibility of the paint film and prevent cracking; meanwhile, the introduction of the methoxyl enhances the interaction with the substrate interface, and the adhesive force is better; the nano inorganic filler plays a role in filling cross-linked networks in resin, reduces the drying shrinkage rate and has a certain toughening effect.
Detailed Description
The invention is further described with reference to the following examples.
Example 1
A method for manufacturing an anti-cracking unsaturated polyester paint comprises the following steps:
s1: preparation of modified Filler
Dissolving 100ml of toluene in 2.0g of nano magnesium hydroxide powder with the particle size of less than 100nm, performing ultrasonic dispersion treatment for 15min, slowly adding 1.8g of 3-bromopropyltrimethoxysilane, fully stirring, keeping the temperature of a water bath at 70 ℃ for 20h, filtering to obtain white precipitates, washing the white precipitates with toluene and absolute ethyl alcohol respectively, performing freeze drying to obtain white powder A, weighing 1g of white powder A and 0.5g of sodium azide, dispersing the white powder A and the sodium azide in 200ml of dimethylformamide, continuously stirring for 20h at 70 ℃ under the protection of nitrogen, washing the precipitates with the dimethylformamide and the absolute ethyl alcohol respectively, performing freeze drying to obtain white powder B, weighing 10g of lignin acetate, adding 120ml of 1mol/L sodium hydroxide solution, fully stirring and dissolving, adding 10g of bromopropane, performing heat preservation reaction at 70 ℃ for 3h, adjusting the pH to 2 by using a hydrochloric acid solution after cooling, filtering out the precipitates, washing by using the absolute ethyl alcohol and distilled water respectively, vacuum drying at 50 deg.C to obtain yellow powder C, weighing white powder B1 g and yellow powder C1.5 g, ultrasonically dispersing in 100ml dioxane, adding cuprous iodide 0.2g, maintaining in water bath at 70 deg.C for 20 hr, filtering to obtain precipitate, washing with distilled water and anhydrous ethanol repeatedly, and freeze drying to obtain lignin-modified nano magnesium hydroxide;
s2: preparation and formulation of main paint raw material
The main paint comprises 50 parts of unsaturated polyester resin with the solid content of 73%, 45 parts of modified filler, 8 parts of titanium dioxide, 6 parts of dimethyl vinyl methoxy silane, EFKA 40100.5 parts, M-50.6 parts, 5% wt. hydroquinone 0.3 part, EFKA 37770.4 parts, BYK 0570.7 parts, 0.5 part of zinc stearate, 4 parts of styrene, and the unsaturated polyester resin, the auxiliary agent and part of styrene are stirred at high speed for 10min to be dispersed and mixed, the modified filler, the titanium dioxide and the anti-cracking agent are added to be dispersed and mixed at high speed, and the rest of styrene is added to be stirred uniformly;
s3: weighing package
The paint comprises, by weight, 100 parts of main paint, 10% wt. methyl ethyl ketone peroxide 1.5 parts, cobalt isooctanoate 2 parts, and a diluent 38 parts, which are respectively weighed and separately packaged, wherein the diluent comprises 30% of styrene, 35% of butyl acetate, and 35% of toluene.
And (3) performance testing:
the components are prepared according to the proportion to obtain a white viscous paint body, the white viscous paint body is normally sprayed at 25 ℃, the surface drying time is 43min, the actual drying time is 18H, the hardness is more than H, the adhesive force is first grade, and the surface leveling property is good;
the wood board with the groove with the depth of 8mm is sprayed with 8 guns for testing, and the paint film is well cured and free of cracking after being observed at night, and does not fall off or crack after being tested by a cold-hot cycle resistance test (minus 20-50 ℃ and 5 times).
Particle size reduction<100nm of nano-sized magnesium hydroxide powder (Mg (OH)2) And lignin surface modified nano magnesium hydroxide (Mg (OH)2Lignin) was separately pressed into tablets (thickness 1mm), and the contact angle of the tablets with the surface of unsaturated polyester was measured at 25 ℃ by an optical contact angle measuring instrument, and Mg (OH)2Contact angle of (1) is 109.4 DEG, with Mg (OH)2The contact angle of Lignin is 66.8 °.
Example 2
A method for manufacturing an anti-cracking unsaturated polyester paint comprises the following steps:
s1: preparation of modified Filler
Dissolving 100ml of toluene in 2.0g of nano magnesium hydroxide powder with the particle size of less than 100nm, performing ultrasonic dispersion treatment for 15min, slowly adding 1.8g of 3-bromopropyltrimethoxysilane, fully stirring, keeping the temperature of a water bath at 70 ℃ for 20h, filtering to obtain white precipitates, washing the white precipitates with toluene and absolute ethyl alcohol respectively, performing freeze drying to obtain white powder A, weighing 1g of white powder A and 0.5g of sodium azide, dispersing the white powder A and the sodium azide in 200ml of dimethylformamide, continuously stirring for 20h at 70 ℃ under the protection of nitrogen, washing the precipitates with the dimethylformamide and the absolute ethyl alcohol respectively, performing freeze drying to obtain white powder B, weighing 10g of lignin acetate, adding 120ml of 1mol/L sodium hydroxide solution, fully stirring and dissolving, adding 10g of bromopropane, performing heat preservation reaction at 70 ℃ for 3h, adjusting the pH to 2 by using a hydrochloric acid solution after cooling, filtering out the precipitates, washing by using the absolute ethyl alcohol and distilled water respectively, vacuum drying at 50 deg.C to obtain yellow powder C, weighing white powder B1 g and yellow powder C1.5 g, ultrasonically dispersing in 100ml dioxane, adding cuprous iodide 0.2g, maintaining in water bath at 70 deg.C for 20 hr, filtering to obtain precipitate, washing with distilled water and anhydrous ethanol repeatedly, and freeze drying to obtain lignin-modified nano magnesium hydroxide;
s2: preparation and formulation of main paint raw material
The main paint comprises 42 parts of unsaturated polyester resin with the solid content of 75%, 36 parts of modified filler, 5 parts of calcium carbonate powder, 5 parts of titanium dioxide, 4 parts of methyl vinyl dimethoxy silane, EFKA 40100.6 parts, EFKA 37770.5 parts, M-50.6 parts, 0.3 part of 5% wt. hydroquinone and 3 parts of styrene, wherein the unsaturated polyester resin, the auxiliary agent and part of the styrene are stirred at high speed for 10min for dispersing and mixing, the modified filler, the titanium dioxide and the anti-cracking agent are added for dispersing and mixing at high speed, and the rest of the styrene is added for stirring uniformly;
s3: weighing package
The paint comprises, by weight, 100 parts of main paint, 10% wt. methyl ethyl ketone peroxide 2.5 parts, cobalt naphthenate 2 parts and a diluent 40 parts, which are respectively weighed and packaged, wherein the diluent comprises 24% of styrene, 40% of butyl acetate and 36% of toluene.
And (3) performance testing:
preparing the components according to a ratio to obtain a white viscous paint body, normally spraying at 25 ℃, wherein the surface drying time is 45min, the actual drying time is 18H, the hardness is greater than H, the adhesive force is first grade, and the surface leveling property is good;
the wood board with the groove with the depth of 8mm is sprayed with 8 guns for testing, and the paint film is well cured and free of cracking after being observed at night, and does not fall off or crack after being tested by a cold-hot cycle resistance test (minus 20-50 ℃ and 5 times).
Example 3
A method for manufacturing an anti-cracking unsaturated polyester paint comprises the following steps:
s1: preparation of modified Filler
Dissolving 100ml of toluene in 2.0g of nano magnesium hydroxide powder with the particle size of less than 100nm, performing ultrasonic dispersion treatment for 15min, slowly adding 1.8g of 3-bromopropyltrimethoxysilane, fully stirring, keeping the temperature of a water bath at 70 ℃ for 20h, filtering to obtain white precipitates, washing the white precipitates with toluene and absolute ethyl alcohol respectively, performing freeze drying to obtain white powder A, weighing 1g of white powder A and 0.5g of sodium azide, dispersing the white powder A and the sodium azide in 200ml of dimethylformamide, continuously stirring for 20h at 70 ℃ under the protection of nitrogen, washing the precipitates with the dimethylformamide and the absolute ethyl alcohol respectively, performing freeze drying to obtain white powder B, weighing 10g of lignin acetate, adding 120ml of 1mol/L sodium hydroxide solution, fully stirring and dissolving, adding 10g of bromopropane, performing heat preservation reaction at 70 ℃ for 3h, adjusting the pH to 2 by using a hydrochloric acid solution after cooling, filtering out the precipitates, washing by using the absolute ethyl alcohol and distilled water respectively, vacuum drying at 50 deg.C to obtain yellow powder C, weighing white powder B1 g and yellow powder C1.5 g, ultrasonically dispersing in 100ml dioxane, adding cuprous iodide 0.2g, maintaining in water bath at 70 deg.C for 20 hr, filtering to obtain precipitate, washing with distilled water and anhydrous ethanol repeatedly, and freeze drying to obtain lignin-modified nano magnesium hydroxide;
s2: preparation and formulation of main paint raw material
The main paint comprises 40 parts of unsaturated polyester resin with the solid content of 78%, 25 parts of modified filler, 15 parts of calcium carbonate powder, 6 parts of titanium dioxide, 2 parts of methyl vinyl dimethoxysilane, EFKA 40100.5 parts, EFKA 37770.5 parts, 2 parts of styrene, unsaturated polyester resin, an auxiliary agent and part of styrene, and is subjected to high-speed stirring for 10min to be dispersed and mixed, the modified filler, the titanium dioxide and the anti-cracking agent are added to be dispersed and mixed at a high speed, and the rest of styrene is added to be stirred uniformly;
s3: weighing package
The paint comprises 100 parts of main paint, 1.5 parts of 10 wt% cyclohexanone peroxide, 1 part of calcium isooctanoate and 30 parts of diluent by weight, and is packaged by weighing respectively, wherein the diluent comprises 15% of styrene, 45% of butyl acetate and 40% of toluene.
And (3) performance testing:
preparing the components according to a ratio to obtain a white viscous paint body, normally spraying at 25 ℃, wherein the surface drying time is 40min, the actual drying time is 17H, the hardness is more than H, the adhesive force is first grade, and the surface leveling property is good;
the wood board with the groove with the depth of 8mm is sprayed with 8 guns for testing, and the paint film is well cured and free of cracking after being observed at night, and does not fall off or crack after being tested by a cold-hot cycle resistance test (minus 20-50 ℃ and 5 times).
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (6)
1. The method for manufacturing the anti-cracking unsaturated polyester paint is characterized by comprising the following steps:
s1: preparing modified filler, and modifying the surface of lignin with modified nano magnesium hydroxide;
adding 2.0g of nano magnesium hydroxide powder with the particle size of less than 100nm into 100ml of toluene, carrying out ultrasonic dispersion treatment for 15min, slowly adding 1.8g of 3-bromopropyltrimethoxysilane, fully stirring, carrying out heat preservation for 20h at 70 ℃ in a water bath, filtering to obtain white precipitates, washing with toluene and absolute ethyl alcohol respectively, carrying out freeze drying to obtain white powder A, weighing 1g of white powder A and 0.5g of sodium azide, dispersing in 200ml of diformylamide, continuously stirring for 20h at 70 ℃ under the protection of nitrogen, washing the precipitates with diformylamide and absolute ethyl alcohol respectively, carrying out freeze drying to obtain white powder B, weighing 10g of lignin acetate, adding 120ml of 1mol/L sodium hydroxide solution, fully stirring and dissolving, adding 10g of bromopropane, carrying out heat preservation reaction for 3h at 70 ℃, cooling, regulating the pH to 2 by using hydrochloric acid solution, filtering out precipitation, washing with absolute ethyl alcohol and distilled water respectively, vacuum drying at 50 ℃ to obtain yellow powder C, weighing 1g of white powder B and 1.5g of yellow powder C, ultrasonically dispersing in 100ml of dioxane, adding 0.2g of cuprous iodide, carrying out heat preservation in water bath at 70 ℃ for 20h, filtering to obtain a precipitate, repeatedly washing with distilled water and absolute ethyl alcohol, and carrying out freeze drying to obtain lignin surface modification nano magnesium hydroxide;
s2: preparing a main paint raw material, wherein the main paint comprises 40-50 parts of unsaturated polyester resin, 25-45 parts of modified filler, 0-15 parts of calcium carbonate powder, 5-8 parts of titanium dioxide, 2-6 parts of anti-cracking agent, 1-3 parts of auxiliary agent and 2-4 parts of styrene;
s3: preparing a main paint, firstly dispersing and mixing unsaturated polyester resin, an auxiliary agent and part of styrene at a high speed, then adding a modified filler, calcium carbonate powder, titanium dioxide and an anti-cracking agent, dispersing and mixing at a high speed, and uniformly stirring with the rest of styrene;
s4: weighing and packaging, namely weighing and packaging 100 parts of main paint, 1.5-2.5 parts of initiator, 1-2 parts of accelerator and 30-40 parts of diluent respectively;
the unsaturated polyester resin is air-drying unsaturated polyester resin with the solid content of 73-78% and the viscosity of 2000-2600 CPS;
the anti-cracking agent is dimethyl vinyl methoxy silane or methyl vinyl dimethoxy silane or a mixture of the two.
2. The method for preparing the anti-cracking unsaturated polyester paint as claimed in claim 1, wherein the auxiliary agent is at least one of a defoaming agent, a dispersing agent, an anti-settling agent, a leveling agent, a polymerization inhibitor and a grinding auxiliary agent.
3. The method for preparing the anti-cracking unsaturated polyester paint as claimed in claim 2, wherein the defoaming agent is acrylate defoaming agent, the dispersing agent is EFKA4010, the anti-settling agent is white carbon black, the leveling agent is acrylate leveling agent, the polymerization inhibitor is 5 wt% hydroquinone, and the grinding aid is zinc stearate.
4. The method of claim 1, wherein the initiator is 10 wt% of methyl ethyl ketone peroxide or cyclohexanone peroxide.
5. The method as claimed in claim 1, wherein the accelerator is one of cobalt isooctanoate, calcium isooctanoate, cobalt naphthenate and calcium naphthenate.
6. The method for preparing the anti-cracking unsaturated polyester paint as claimed in claim 1, wherein the diluent comprises 15-30% by weight of styrene, 35-45% by weight of butyl acetate and 35-40% by weight of toluene.
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