CN109486399A - 3D solid flashes metal powder coating and preparation method thereof - Google Patents
3D solid flashes metal powder coating and preparation method thereof Download PDFInfo
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- CN109486399A CN109486399A CN201811383309.8A CN201811383309A CN109486399A CN 109486399 A CN109486399 A CN 109486399A CN 201811383309 A CN201811383309 A CN 201811383309A CN 109486399 A CN109486399 A CN 109486399A
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 47
- 239000002184 metal Substances 0.000 title claims abstract description 47
- 239000000843 powder Substances 0.000 title claims abstract description 44
- 238000000576 coating method Methods 0.000 title claims abstract description 35
- 239000011248 coating agent Substances 0.000 title claims abstract description 33
- 239000007787 solid Substances 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical class [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 61
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 26
- 238000002156 mixing Methods 0.000 claims abstract description 15
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 13
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims abstract description 12
- 239000002270 dispersing agent Substances 0.000 claims abstract description 11
- 229920001225 polyester resin Polymers 0.000 claims abstract description 11
- 239000004645 polyester resin Substances 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims description 25
- -1 isocyanic acid Ester Chemical class 0.000 claims description 18
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 17
- 239000000839 emulsion Substances 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000010792 warming Methods 0.000 claims description 11
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 10
- PVEOYINWKBTPIZ-UHFFFAOYSA-N but-3-enoic acid Chemical compound OC(=O)CC=C PVEOYINWKBTPIZ-UHFFFAOYSA-N 0.000 claims description 9
- 239000012153 distilled water Substances 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 239000012948 isocyanate Substances 0.000 claims description 8
- 150000002513 isocyanates Chemical class 0.000 claims description 8
- 238000012986 modification Methods 0.000 claims description 8
- 230000004048 modification Effects 0.000 claims description 8
- 238000007792 addition Methods 0.000 claims description 7
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 235000019441 ethanol Nutrition 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 4
- 229960004756 ethanol Drugs 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 4
- 238000007873 sieving Methods 0.000 claims description 4
- XLJMAIOERFSOGZ-UHFFFAOYSA-N anhydrous cyanic acid Natural products OC#N XLJMAIOERFSOGZ-UHFFFAOYSA-N 0.000 claims description 2
- 238000004821 distillation Methods 0.000 claims 1
- 239000003973 paint Substances 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000005507 spraying Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000004615 ingredient Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 11
- 239000000049 pigment Substances 0.000 description 6
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 239000002932 luster Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 239000005028 tinplate Substances 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- QBUKAFSEUHGMMX-MTJSOVHGSA-N (5z)-5-[[3-(1-hydroxyethyl)thiophen-2-yl]methylidene]-10-methoxy-2,2,4-trimethyl-1h-chromeno[3,4-f]quinolin-9-ol Chemical group C1=CC=2NC(C)(C)C=C(C)C=2C2=C1C=1C(OC)=C(O)C=CC=1O\C2=C/C=1SC=CC=1C(C)O QBUKAFSEUHGMMX-MTJSOVHGSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- 229910000906 Bronze Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- OWIKHYCFFJSOEH-UHFFFAOYSA-N Isocyanic acid Chemical compound N=C=O OWIKHYCFFJSOEH-UHFFFAOYSA-N 0.000 description 1
- 235000011054 acetic acid Nutrition 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000004205 trifluoroethyl group Chemical group [H]C([H])(*)C(F)(F)F 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/06—Polyurethanes from polyesters
-
- 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
- C09D5/03—Powdery paints
- C09D5/033—Powdery paints characterised by the additives
-
- 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
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0806—Silver
-
- 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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
- Powder Metallurgy (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The present invention provides a kind of 3D solid flashing metal powder coatings and preparation method thereof, belong to powder coating technology field.It solves the problems such as existing powdery paints is decorative poor.The present invention includes being modified silver powder 3-10 parts including hydroxy polyester resin 45-55 parts, 12-18 parts of curing agent, 0.5-1.5 parts of levelling agent, 15-25 parts of blanc fixe, 1-2 parts of dispersing agent.By preparing modified silver powder, above-mentioned each ingredient is weighed, mixing, squeezing out, broken obtain 3D solid of the invention and flash metal powder coating, powdery paints of the invention has excellent metal-like, metal powder is evenly distributed, film coated surface is smooth, and there is excellent weatherability, the present invention is squeezed out using disposable, is uniformly mixed, production technology is simplified, spraying process product quality is guaranteed.
Description
Technical field
The invention belongs to powder coating technology fields, and in particular to a kind of 3D solid flashing metal powder coating and its preparation
Method.
Background technique
Powdery paints is a kind of Novel environment-friendlymaterial material being derived based on petrochemical materials, mainly by low molecule
Resin, auxiliary agent, filler etc. are measured, prepared under certain conditions, spray, toasted and formed with certain appearance, gloss, face
Color, and the film of anti-corrosion and decoration function is played in object surface.Metal-effect powder paint as one of powdery paints,
Due to metal powder coating film metal luster, there is splendid multicolor effect and defencive function outstanding, can be vapour
The top grade industrial goods such as vehicle, household electrical appliances, instrument and meter provide bright and colourful decorative appearance, are welcomed by customers.
Metal powder coating can be divided into plane and texture type two major classes product according to the flatness of appearance of film, according to painting
Planar metal powdery paints can be divided into high glaze, flash of light (colorful, changeable colors along with angle), metal effect by the appearance luster effect of film
Several classes are answered, is divided according to the type of metallic pigments, is divided into silver powder (Al), bronze (Cu) and zinc-rich powder (being also zinc-rich coatings, Zn).
Currently, the prior art usually prepares metal-effect powder paint by additional method, that is, prepared in powdery paints
Rear process in addition metal powder obtain.But the preparation process of existing outer addition metal-effect powder paint there are still
Some problems still have most metallic pigments to fail bonding up since metal powder generallys use rear addition construction after binding,
Cause in spraying process metallic pigments spraying uneven, the problems such as film coated surface defect, aesthetics is inadequate.Moreover, because aluminium
For amphiprotic activity metal, contacts the oxygen in acid-base solution or air and easily occurs to aoxidize and blackening, influence its metallic luster,
A large amount of hydrogen can be also generated, its storage stability is influenced, the weatherability and chemical resistance of film are also poor.
Summary of the invention
The purpose of the present invention is being directed to the above problem present in existing metal powder coating and preparation method thereof, and provide
A kind of 3D solid flashing metal powder coating and preparation method thereof first passes through and coats processing to metallic pigments and be modified, avoids squeezing out
When metallic pigments be destroyed, prevent metallic pigments oxidizing blackening, then metal-effect powder paint, system are prepared by interior plus extrusion
The metal powder coating obtained has excellent coating vividness, and color travel can reach splendid multicolor effect, can be more
Mend defect existing for original additional method preparation metal-effect powder paint.
Object of the invention can be realized by the following technical scheme:
3D solid flashes metal powder coating, which is characterized in that calculates in parts by mass, it includes hydroxy polyester resin 45-
55 parts, 12-18 parts of curing agent, 0.5-1.5 parts of levelling agent, 15-25 parts of blanc fixe, 1-2 parts of dispersing agent, modified silver powder 3-10
Part.
Preferably, the curing agent is isocyanate curing agent.
Preferably, the modification silver powder includes the raw material of following mass parts: 1-3 parts of acrylic acid trifluoro ethyl ester, vinyl
0.5-1.2 parts of acetic acid, 25-35 parts of dehydrated alcohol, 15-20 parts of distilled water and 1-2 parts of perfluoroethylene-propylene emulsion (abbreviation F46),
10-15 parts of the silver powder of partial size 30-50um.
Preferably, the partial size of the modification silver powder is 30-50um.
3D solid flashing metal powder coating preparation method, which is characterized in that it the following steps are included:
Step 1 prepares modified silver powder and first weighs 10-15 parts of silver powder, 15-20 parts of distilled water and 25-35 parts of dehydrated alcohol investments
It is stirred in reaction kettle, nitrogen is passed through in reaction kettle, be to slowly warm up to 45-55 degree, weigh 1-3 parts of acrylic acid trifluoro ethyl ester slowly drop
It is added in reaction kettle, is dripped in 15 minutes, kept for 200 revs/min and stirred at low speed；It finishes to silver powder is fully dispersed, adjustment is stirred
Mixing speed is 600 revs/min, and temperature rises to 68-72 degree, weighs 0.5-1.2 parts of vinyl acetic acids and is added dropwise, and after completion of dropwise addition, is risen
Temperature to 73-78 degree starts to flow back, and heat preservation is sampled after 2.5-3.5 hours and observed under 50 power microscopes, smooth to silver powder surface, has
After metal flash-point, it is warming up to 80-85 degree and sloughs ethyl alcohol；It weighs 1-2 parts of perfluoroethylene-propylene emulsion and is slowly added to reaction kettle relaying
Continuous stirring 1.8-2.3 hours, is finally warming up to 100 degree of water sloughed in reaction kettle, is dehydrated substantially completely to moisture in reaction kettle,
Mixing speed is reduced to 200 revs/min, modified silver powder is sufficiently obtained after drying；
Hydroxyl and remaining ester during perfluoroethylene-propylene emulsion is stirred to react, on perfluoroethylene-propylene emulsion side chain
Base reaction, while a thin layer of tree can be being wrapped up on silver powder surface with dewatered perfluoroethylene-propylene (abbreviation F46) resin
Rouge thin layer protects silver powder not destroyed metal flicker effect by extruder high speed shear in subsequent extrusion process.
Step 2 is weighed, is mixed.Weigh 45-55 parts of hydroxy polyester resin, 12-18 parts of isocyanate curing agent, levelling agent
0.5-1.5 parts, 15-25 parts of blanc fixe, 1-2 parts of dispersing agent, modified silver powder 3-10 part it is uniformly mixed into high-speed mixer；
Step 3 squeezes out, broken extruder is in material mixing section temperature setting 90-100 degree, sets in the temperature of matter homogenizing section
Tabletting is squeezed out after being set to 105-115 degree, sieving is then crushed and obtains 3D solid flashing metal powder coating.
3D solid flashing metal powder coating is sprayed on tinplate, toasts 15 minutes, is made at a temperature of 190 degree
The film of 3D metal effect.
Compared with prior art, the invention has the following beneficial effects:
Silver powder of the invention has carried out the double-deck coating, since the perfluorinated structure of perfluoroethylene-propylene emulsion (F46) can make
The powdery paints that must be finally made has excellent weather resistance, and the high-melting-point of F46, creep resistance and anti-song Rao Xingneng are wrapped
It is wrapped in silver powder surface, is not damaged under extruder high temperature high shear；And the silver powder particle being coated is more evenly,
It is easier to be scattered in film, so that film is uniformly dispersed, 3D stereoscopic effect is obvious, and metal-like is strong, and in addition silver powder is logical
The package weather resistance for crossing F46 greatly improves, and solves silver powder and is easy to black, not the drawbacks of resistance to oxidation；The present invention uses
It is disposable to squeeze out, it is uniformly mixed, simplifies production technology, spraying process product quality is guaranteed；To sum up, powder of the invention applies
Material has excellent metal-like, and metal powder is evenly distributed, and film coated surface is smooth, and has excellent weatherability.
Specific embodiment
The following is specific embodiments of the present invention, and technical scheme of the present invention will be further described, but the present invention is simultaneously
It is not limited to these embodiments.
Embodiment 1
3D solid flashes metal powder coating, calculates in parts by mass, it includes 45-55 parts of hydroxy polyester resin, isocyanic acid
It is 12-18 parts of ester curing agent, 0.5-1.5 parts of levelling agent, 15-25 parts of blanc fixe, 1-2 parts of dispersing agent, silver powder 3-10 parts modified,
The partial size of modified silver powder is 30-50um.
Modified silver powder includes the raw material of following mass parts: 1-3 parts of acrylic acid trifluoro ethyl ester, 0.5-1.2 parts of vinyl acetic acid,
25-35 parts of dehydrated alcohol, 15-20 parts of distilled water and 1-2 parts of perfluoroethylene-propylene emulsion (abbreviation F46), the silver of partial size 30-50um
10-15 parts of powder.
The preparation method of 3D solid flashing metal powder coating, comprising the following steps:
Step 1 prepares modified silver powder and first weighs 10-15 parts of silver powder, 15-20 parts of distilled water and 25-35 parts of dehydrated alcohol investments
It is stirred in reaction kettle, nitrogen (preventing silver powder from aoxidizing blackening) is passed through in reaction kettle, 45-55 degree is to slowly warm up to, weighs acrylic acid
1-3 parts of trifluoro ethyl ester are slowly dropped in reaction kettle, drip in 15 minutes, are kept for 200 revs/min and stirred at low speed；To silver powder
Fully dispersed to finish, adjustment mixing speed is 600 revs/min, and temperature rises to 68-72 degree, weighs 0.5-1.2 parts of vinyl acetic acids
It is added dropwise, after completion of dropwise addition, is warming up to 73-78 degree and starts to flow back, heat preservation is sampled after 2.5-3.5 hours and seen under 50 power microscopes
It examines, it is smooth to silver powder surface, after having metal flash-point, it is warming up to 80-85 degree and sloughs ethyl alcohol；Weigh perfluoroethylene-propylene emulsion 1-2
Part is slowly added to continue stirring 1.8-2.3 hours in reaction kettle, 100 degree of water sloughed in reaction kettle is finally warming up to, wait react
Moisture is dehydrated completely substantially in kettle, reduces mixing speed to 200 revs/min, modified silver powder is sufficiently obtained after drying；
Hydroxyl and remaining ester during perfluoroethylene-propylene emulsion is stirred to react, on perfluoroethylene-propylene emulsion side chain
Base reaction, while a thin layer of tree can be being wrapped up on silver powder surface with dewatered perfluoroethylene-propylene (abbreviation F46) resin
Rouge thin layer protects silver powder not destroyed metal flicker effect by extruder high speed shear in subsequent extrusion process.
Step 2 weighs, mixing weighs 45-55 parts of hydroxy polyester resin, 12-18 parts of isocyanate curing agent, levelling agent
0.5-1.5 parts, 15-25 parts of blanc fixe, 1-2 parts of dispersing agent, modified silver powder 3-10 part it is uniformly mixed into high-speed mixer；
Step 3 squeezes out, broken extruder is in material mixing section temperature setting 90-100 degree, sets in the temperature of matter homogenizing section
Tabletting is squeezed out after being set to 105-115 degree, sieving is then crushed and obtains 3D solid flashing metal powder coating.
3D solid flashing metal powder coating is sprayed on tinplate, toasts 15 minutes, is made at a temperature of 190 degree
The film of 3D metal effect.
Embodiment 2
3D solid flashes metal powder coating, calculates in parts by mass, it includes 50 parts of hydroxy polyester resin, and isocyanates is solid
15 parts of agent, 1 part of levelling agent, 20 parts of blanc fixe, 1 part of dispersing agent, modified 5 parts of silver powder.The partial size of the modification silver powder
For 40um.
Modified silver powder includes the raw material of following mass parts: 2 parts of acrylic acid trifluoro ethyl ester, 0.8 part of vinyl acetic acid, and anhydrous second
30 parts of alcohol, 18 parts of distilled water and 1 part of perfluoroethylene-propylene emulsion, 10 parts of the silver powder of partial size 30-50um.
The preparation method of 3D solid flashing metal powder coating, comprising the following steps:
Step 1 prepares modified silver powder and first weighs 10 parts of silver powder, in 30 parts of investment reaction kettles of 18 parts of distilled water and dehydrated alcohol
It stirs, is passed through nitrogen in reaction kettle, is to slowly warm up to 50 degree, weighs 2 parts of acrylic acid trifluoro ethyl ester and be slowly dropped in reaction kettle,
It is dripped in 15 minutes, is kept for 200 revs/min and stirred at low speed；It finishing to silver powder is fully dispersed, adjustment mixing speed is 600 turns/
Minute, temperature rises to 70 degree, and it weighs 0.8 part of vinyl acetic acid and is added dropwise, after completion of dropwise addition, be warming up to 75 degree and start to flow back, heat preservation 3
It samples after hour and is observed under 50 power microscopes, it is smooth to silver powder surface, after having metal flash-point, it is warming up to 82 degree and sloughs ethyl alcohol；
It weighs 1 part of perfluoroethylene-propylene emulsion to be slowly added to continue stirring 2 hours in reaction kettle, is finally warming up to 100 degree and sloughs reaction
Water in kettle is dehydrated completely substantially to moisture in reaction kettle, is reduced mixing speed to 200 revs/min, is sufficiently changed after drying
Property silver powder；
Step 2 weighs, mixing weighs 50 parts of hydroxy polyester resin, 15 parts of isocyanate curing agent, 1 part of levelling agent, precipitating
20 parts of barium sulfate, 1 part of dispersing agent, modified 5 parts of silver powder are uniformly mixed into high-speed mixer；
Step 3 squeezes out, broken extruder is in 95 degree of material mixing section temperature setting, is set as in the temperature of matter homogenizing section
Tabletting is squeezed out after 110 degree, is then crushed sieving and is obtained 3D solid flashing metal powder coating.
3D solid flashing metal powder coating is sprayed on tinplate, toasts 15 minutes, is made at a temperature of 190 degree
The film of 3D metal effect.
Embodiment 3
3D solid flashes metal powder coating, calculates in parts by mass, it includes 45 parts of hydroxy polyester resin, and isocyanates is solid
12 parts of agent, 0.5 part of levelling agent, 15 parts of blanc fixe, 1.5 parts of dispersing agent, modified 3 parts of silver powder.The modification silver powder
Partial size is 30um.
Modified silver powder includes the raw material of following mass parts: 1 part of acrylic acid trifluoro ethyl ester, 0.5 part of vinyl acetic acid, and anhydrous second
25 parts of alcohol, 15 parts of distilled water and 1 part of perfluoroethylene-propylene emulsion, 12 parts of the silver powder of partial size 30um.
Embodiment 4
3D solid flashes metal powder coating, calculates in parts by mass, it includes 55 parts of hydroxy polyester resin, and isocyanates is solid
18 parts of agent, 1.5 parts of levelling agent, 25 parts of blanc fixe, 2 parts of dispersing agent, modified 10 parts of silver powder.The partial size of modified silver powder is
50um。
Modified silver powder includes the raw material of following mass parts: 3 parts of acrylic acid trifluoro ethyl ester, 1.2 parts of vinyl acetic acid, and anhydrous second
35 parts of alcohol, 20 parts of distilled water and 2 parts of perfluoroethylene-propylene emulsion, 15 parts of the silver powder of partial size 50um.
It should be understood that in claims of the present invention, specification, all " including ... " should be understood as open
Meaning, that is, its meaning is equal to " at least containing ... ", but should not be understood as enclosed meaning, i.e., its meaning is not answered
This is interpreted as " only including ... ".
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (5)
1.3D solid flashes metal powder coating, which is characterized in that calculates in parts by mass, it includes hydroxy polyester resin 45-55
Part, 12-18 parts of curing agent, 0.5-1.5 parts of levelling agent, 15-25 parts of blanc fixe, 1-2 parts of dispersing agent, modified silver powder 3-10
Part.
2. 3D solid according to claim 1 flashes metal powder coating, which is characterized in that the curing agent is isocyanic acid
Ester curing agent.
3. 3D solid according to claim 1 flashes metal powder coating, which is characterized in that the modification silver powder includes
The raw material of following mass parts: 1-3 parts of acrylic acid trifluoro ethyl ester, 0.5-1.2 parts of vinyl acetic acid, 25-35 parts of dehydrated alcohol, distillation
15-20 parts of water and 1-2 parts of perfluoroethylene-propylene emulsion, 10-15 parts of the silver powder of partial size 30-50um.
4. 3D solid according to claim 1 flashes metal powder coating, which is characterized in that the grain of the modification silver powder
Diameter is 30-50um.
5. it is used to prepare the preparation method of the flashing metal powder coating of 3D solid described in claim 1-4 any one, it is special
Sign is, it the following steps are included:
Step 1 prepares modified silver powder and first weighs 25-35 parts of 10-15 parts of silver powder, 15-20 parts of distilled water and dehydrated alcohol investment reactions
It is stirred in kettle, nitrogen is passed through in reaction kettle, be to slowly warm up to 45-55 degree, weighed 1-3 parts of acrylic acid trifluoro ethyl ester and be slowly dropped to
It in reaction kettle, is dripped in 15 minutes, is kept for 200 revs/min and stirred at low speed；It finishes to silver powder is fully dispersed, adjustment stirring speed
Degree is 600 revs/min, and temperature rises to 68-72 degree, weighs 0.5-1.2 parts of vinyl acetic acids and is added dropwise, after completion of dropwise addition, is warming up to
73-78 degree starts to flow back, and heat preservation is sampled after 2.5-3.5 hours and observed under 50 power microscopes, smooth to silver powder surface, there is metal
After flash-point, it is warming up to 80-85 degree and sloughs ethyl alcohol；1-2 parts of perfluoroethylene-propylene emulsion are weighed to be slowly added to continue to stir in reaction kettle
It mixes 1.8-2.3 hours, is finally warming up to 100 degree of water sloughed in reaction kettle, be dehydrated completely, reduce substantially to moisture in reaction kettle
Mixing speed sufficiently obtains modified silver powder to 200 revs/min after drying；
Step 2 weighs, mixing weighs 45-55 parts of hydroxy polyester resin, 12-18 parts of isocyanate curing agent, levelling agent 0.5-1.5
Part, 15-25 parts of blanc fixe, 1-2 parts of dispersing agent, silver powder 3-10 parts of modification are uniformly mixed into high-speed mixer；
Step 3 squeezes out, broken extruder is in material mixing section temperature setting 90-100 degree, is set as in the temperature of matter homogenizing section
Tabletting is squeezed out after 105-115 degree, is then crushed sieving and is obtained 3D solid flashing metal powder coating.
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Denomination of invention: 3D stereoscopic scintillation metal powder coating and its preparation method Effective date of registration: 20231027 Granted publication date: 20200804 Pledgee: Jinhua Branch of Bank of Ningbo Co.,Ltd. Pledgor: Jinhua Jiazhen Technology Co.,Ltd. Registration number: Y2023980063083 |