CN110256949A - A kind of high adhesion force extinction powder coating and preparation method thereof - Google Patents
A kind of high adhesion force extinction powder coating and preparation method thereof Download PDFInfo
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- CN110256949A CN110256949A CN201910647014.5A CN201910647014A CN110256949A CN 110256949 A CN110256949 A CN 110256949A CN 201910647014 A CN201910647014 A CN 201910647014A CN 110256949 A CN110256949 A CN 110256949A
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- powder coating
- adhesion force
- high adhesion
- extinction powder
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- 239000011248 coating agent Substances 0.000 title claims abstract description 39
- 238000000576 coating method Methods 0.000 title claims abstract description 39
- 239000000843 powder Substances 0.000 title claims abstract description 36
- 230000008033 biological extinction Effects 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 22
- 229920005749 polyurethane resin Polymers 0.000 claims abstract description 21
- 150000004756 silanes Chemical class 0.000 claims abstract description 20
- 229920005989 resin Polymers 0.000 claims abstract description 18
- 239000011347 resin Substances 0.000 claims abstract description 18
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 238000001125 extrusion Methods 0.000 claims abstract description 9
- 238000002844 melting Methods 0.000 claims abstract description 9
- 230000008018 melting Effects 0.000 claims abstract description 9
- 239000004593 Epoxy Substances 0.000 claims abstract description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 8
- 239000001301 oxygen Substances 0.000 claims abstract description 8
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 6
- WNKHIRFTIGKJPT-UHFFFAOYSA-N diethoxy hydrogen phosphate Chemical compound CCOOP(O)(=O)OOCC WNKHIRFTIGKJPT-UHFFFAOYSA-N 0.000 claims abstract description 6
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000000945 filler Substances 0.000 claims abstract description 5
- 239000000049 pigment Substances 0.000 claims abstract description 5
- 239000003973 paint Substances 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- -1 γ-aminopropyl Chemical group 0.000 claims description 4
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229910000077 silane Inorganic materials 0.000 claims description 3
- 235000015511 Liquidambar orientalis Nutrition 0.000 claims description 2
- 239000004870 Styrax Substances 0.000 claims description 2
- 244000028419 Styrax benzoin Species 0.000 claims description 2
- 235000000126 Styrax benzoin Nutrition 0.000 claims description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 claims description 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical group [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 2
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims description 2
- 239000006229 carbon black Substances 0.000 claims description 2
- 239000007822 coupling agent Substances 0.000 claims description 2
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 239000000853 adhesive Substances 0.000 abstract description 12
- 230000001070 adhesive effect Effects 0.000 abstract description 12
- 239000011521 glass Substances 0.000 abstract description 4
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 4
- 239000010935 stainless steel Substances 0.000 abstract description 4
- 235000013305 food Nutrition 0.000 abstract description 3
- 238000005034 decoration Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000006087 Silane Coupling Agent Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 125000000467 secondary amino group Chemical group [H]N([*:1])[*:2] 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- LTSHICDODAIOSX-UHFFFAOYSA-N CCO[P]OCC Chemical compound CCO[P]OCC LTSHICDODAIOSX-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000002253 acid Substances 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
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000006664 bond formation reaction Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 235000021050 feed intake Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The invention discloses a kind of high adhesion force extinction powder coating and preparation method thereof, the raw material including following weight percent: modified resin 10%, curing agent 20-30%, low hydroxyl value polyurethane resin 20-30%, high hydroxyl value polyurethane resin 20-30%, pigments and fillers 10-30%, auxiliary agent 0.5-2%；Wherein modified resin the preparation method comprises the following steps: modified silane coupler and low hydroxyl polyurethane resin are mixed, by double screw extruder melting extrusion, tabletting and it is broken after obtain；Modified silane coupler the preparation method comprises the following steps: gamma-aminopropyl-triethoxy-silane and γ-(2,3- the third oxygen of epoxy) ethyoxyl diethoxy phosphate are mixed, 2h is reacted at 60 DEG C and is made.The extinction powder coating has stable glossiness, splendid levelling effect, excellent hardness of film, has extremely strong adhesive force to ground such as glass, stainless steel, galvanized sheet of hardly possible attachment etc..It can be suitable for the coastal equal areas in open air；Meet food safety requirements, can be used for the coating decoration of kitchen utensils, table ware and other items.
Description
Technical field
The present invention relates to chemistry painting industry substance preparation techniques fields, and in particular to a kind of high adhesion force extinction powder coating and
Preparation method.
Background technique
Powdery paints is a kind of environment-friendly coating for being entirely free of organic solvent, it exists in the form of micro mist, is used
Electrostatic Spray Technology is applied in the substrate surface of heating, melting film forming.Compared with traditional solvent based coating, powdery paints does not have
Solvent contamination, coating is convenient, curing rate is fast, film performance is excellent, be it is a kind of grow up from the 1960s it is high-new
Technology.But existing powdery paints has that surface levelling is poor, delustring coating film gloss degree is unstable, weatherability is poor, is not inconsistent mostly
The defects of combined foodstuff safety requirements；And general powdery paints only has preferable adhesive force to iron-based and aluminium base ground, but for one
A little special substrate (such as: glass, galvanized sheet, stainless steel) adhesive force are poor, and water resistance is bad.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of good weatherability for meeting food safety requirements, can stablize
Delustring, the high adhesion force extinction powder coating that levelling is excellent, hardness is good and preparation method thereof.
The technical scheme adopted by the invention is as follows:
A kind of high adhesion force extinction powder coating, the raw material including following weight percent:
Modified resin 10%；
Low hydroxyl value polyurethane resin 20-30%；
High hydroxyl value polyurethane resin 20-30%；
Curing agent 20-30%；
Pigment 0.5%；
Filler 10-30%；
Auxiliary agent 0.5-2%.
The modified resin the preparation method comprises the following steps: modified silane coupler and low hydroxyl polyurethane resin are mixed, pass through
Double screw extruder melting extrusion, tabletting and it is broken after obtain.
Further, the temperature of the melting extrusion is 100 DEG C.
The modified silane coupler the preparation method comprises the following steps: by gamma-aminopropyl-triethoxy-silane and γ-(2,3- epoxy
Third oxygen) mixing of ethyoxyl diethoxy phosphate, 2h, which is reacted, at 60 DEG C is made.
Further, the gamma-aminopropyl-triethoxy-silane and γ-(2,3- the third oxygen of epoxy) ethyoxyl diethoxy phosphorus
The molar ratio of acid esters is 1:1~1.2.
The weight percent of the modified silane coupler and low hydroxyl polyurethane resin is respectively 85%, 15%.
The low hydroxyl value polyurethane resin, high hydroxyl value polyurethane resin the trade mark be respectively SJ1100, SJ1800.
The curing agent is polyurethane powdered paint curing agent B1530.
The pigment is carbon black；The filler is aluminium hydroxide.
The auxiliary agent includes styrax degasser and levelling agent GLP588.
The present invention also provides a kind of preparation method of high adhesion force extinction powder coating as described above, including it is following
Step: by each raw material of formula ratio after mixing machine mixes by double screw extruder under the conditions of 115 DEG C through melting extrusion at
Then piece is milled into powder with grinding machine, high adhesion force extinction powder coating can most be prepared after 200 mesh sieves afterwards.
The application method of the high adhesion force extinction powder coating are as follows: high adhesion force extinction powder is sprayed by electrostatic gun
At a temperature of baking 15min curing molding on coating and template, through baking oven at 200 DEG C.
In the formula of high adhesion force extinction powder coating provided by the invention, pass through gamma-aminopropyl-triethoxy silicon first
Modified silane coupler is prepared in alkane and γ-(2,3- the third oxygen of epoxy) ethyoxyl diethoxy phosphate, in the reaction, reaction
Fireballing primary amino group is replaced by the lower secondary amino group of reactivity, reduces after final coating film-forming existing for film
Orange peel problem, and the bound phosphate groups in product can give film attached excellent for metal substrate (such as galvanized sheet, stainless steel)
Put forth effort, and silane can give film for the excellent adhesive force of non-metal kind (such as glass, ceramics) ground.Modified silane coupler
Synthesis equation it is as follows:
Modified silane coupler and a certain amount of low hydroxy resin are squeezed out by double screw extruder again and are made after being crushed
Modified resin.The modified resin obtained in this way can allow liquid silane coupling agent to be well-dispersed among entire resin system,
The film adhesive after solidifying can be allowed more uniform.And the modified resin of solid-like can it is easy to produce in feed intake and add and
Resin can wrap liquid modifying auxiliary agent isolation air well in periphery convenient for extending storage time.And it is deposited in modified resin
Modified silane coupler in secondary amino group and curing agent B1530 in isocyanate groups reaction after, integration can be formed
Reticular structure, while the group of the other side and ground are linked by hydrogen bond and covalent bond formation, are remarkably improved adhesive force, such as
Shown in lower:
Compared with existing skill, high adhesion force extinction powder coating prepared by the present invention has stable glossiness, splendid
Levelling effect, excellent hardness of film, have extremely strong adhesive force to ground such as glass, stainless steel, galvanized sheet etc. of hardly possible attachment.
It can be suitable for the coastal equal areas in open air；Product is authenticated by FDA, is met food safety requirements, be can be used for for kitchen use
The coating decoration of tool, table ware and other items.
Detailed description of the invention
Fig. 1 is the infrared spectrogram of modified silane coupler.
Specific embodiment
Below with reference to implementing, the present invention is described in detail.
Each raw material manufacturer used in the present invention is as follows:
Low hydroxyl value polyurethane resin SJ1100: Anhui Shenjian New Material Co.Ltd
High hydroxyl value polyurethane resin SJ1800: Anhui Shenjian New Material Co.Ltd
Polyurethane powdered paint curing agent B1530: Bayer Bitterfeld GmbH
Levelling agent GLP588: Ningbo South Sea Fenghua Co., Ltd
γ-(2,3- the third oxygen of epoxy) ethyoxyl diethoxy phosphate: Mount Huang Xin Jia fine materials Co., Ltd
Examples 1 to 3
A kind of high adhesion force extinction powder coating, the raw material including the weight percent as shown in Examples 1 to 3 in table 1:
Table 1
The preparation method of the high adhesion force extinction powder coating the following steps are included:
(1) preparation of modified poly ester: 15% modified silane coupler and 85% low hydroxyl polyurethane resin are mixed, lead to
Cross double screw extruder melting extrusion under conditions of 100 DEG C, tabletting and it is broken after be prepared into modified resin；The modified silane
Coupling agent the preparation method comprises the following steps: by gamma-aminopropyl-triethoxy-silane and γ-(the third oxygen of 2,3- epoxy) ethyoxyl diethoxy
After phosphate is by the molar ratio mixing of 1:1,2h is reacted at 60 DEG C, the infrared spectrum of gained modified silane coupler is as schemed
Shown in 1.
(2) each raw material of formula ratio is in blocks by double screw extruder melting extrusion after mixing machine mixes, then use
Grinding machine is milled into powder, finally with high adhesion force extinction powder coating can be prepared after 200 mesh sieves.
Comparative example 1~3
A kind of powdery paints, the raw material including the weight percent as shown in comparative example 1~3 in table 1, preparation method are as follows:
It is in blocks by double screw extruder melting extrusion by each raw material of formula ratio after mixing machine mixes, then it is milled into grinding machine
Powder, finally with powdery paints can be prepared after 200 mesh sieves.
Comparative example 4
A kind of powdery paints, other with embodiment 1, only the modified silane coupler in step (1) the preparation method comprises the following steps:
KH560 is added drop-wise to reaction 1.5h in KH550 to be prepared at 60 DEG C.
Comparative example 5
A kind of powdery paints, other are with embodiment 1, and only the modified silane coupler in step (1) replaces with γ-ammonia third
Ethyl triethoxy silicane alkane.
The coating that the various embodiments described above and comparative example are prepared is sprayed on template by electrostatic gun, at 200 DEG C
Curing molding after toasting 15 minutes in baking oven carries out properties detection to the template after solidification, and the results are shown in Table 2:
Table 2
It is aobvious to the adhesive force of ground to can be seen that the extinction powder coating in 1-3 of the embodiment of the present invention from the data in table 2
It writes and is better than comparative example 1-5, it is seen that low hydroxyl polyurethane resin is carried out using modified silane coupler disclosed by the invention first
Modification obtains modified resin and then is used cooperatively modified resin and low hydroxyl value polyurethane resin and high hydroxyl value polyurethane resin
Powdery paints is greatly improved for the adhesive force of ground as matrix resin, and the levelability of the film after powder coating solidification
Preferably.
And if changing the synthesis material of above-mentioned modified silane coupler or being directly replaced with common silane
After coupling agent KH550, even if carrying out the preparation of extinction powder coating according to formula same as the present invention, obtained powder is applied
The adhesive force and levelability of material also can be poor.
And if silane coupling agent or modified silane coupler are directly appended in system, powdery paints applies membrane part
Region will appear the poor situation of adhesive force, and any ask does not occur in the film adhesive for adding the powdery paints of modified resin
Topic, all properties are best.
The above-mentioned detailed description carried out to a kind of high adhesion force extinction powder coating and preparation method thereof referring to embodiment is
It is illustrative without being restrictive, several embodiments can be enumerated according to limited range, therefore do not departing from the present invention
Change and modification under general plotting should belong within protection scope of the present invention.
Claims (10)
1. a kind of high adhesion force extinction powder coating, which is characterized in that the raw material including following weight percent:
Modified resin 10%；
Low hydroxyl value polyurethane resin 20-30%；
High hydroxyl value polyurethane resin 20-30%；
Curing agent 20-30%；
Pigment 0.5%；
Filler 10-30%；
Auxiliary agent 0.5-2%.
2. high adhesion force extinction powder coating according to claim 1, which is characterized in that the preparation side of the modified resin
Method are as follows: mix modified silane coupler and low hydroxyl polyurethane resin, by double screw extruder melting extrusion, tabletting is simultaneously broken
It is obtained after broken.
3. high adhesion force extinction powder coating according to claim 2, which is characterized in that the modified silane coupler
The preparation method comprises the following steps: gamma-aminopropyl-triethoxy-silane and γ-(the third oxygen of 2,3- epoxy) ethyoxyl diethoxy phosphate is mixed
It closes, 2h is reacted at 60 DEG C and is made.
4. high adhesion force extinction powder coating according to claim 3, which is characterized in that three ethoxy of γ-aminopropyl
The molar ratio of base silane and γ-(the third oxygen of 2,3- epoxy) ethyoxyl diethoxy phosphate is 1:1~1.2.
5. according to high adhesion force extinction powder coating described in claim 2-4 any one, which is characterized in that the modified silicon
The weight percent of alkane coupling agent and low hydroxyl polyurethane resin is respectively 85%, 15%.
6. high adhesion force extinction powder coating according to any one of claims 1-4, which is characterized in that the low hydroxyl value
Polyurethane resin, high hydroxyl value polyurethane resin the trade mark be respectively SJ1100, SJ1800.
7. high adhesion force extinction powder coating according to any one of claims 1-4, which is characterized in that the curing agent
For polyurethane powdered paint curing agent B1530.
8. high adhesion force extinction powder coating according to any one of claims 1-4, which is characterized in that the pigment is
Carbon black；The filler is aluminium hydroxide.
9. high adhesion force extinction powder coating according to any one of claims 1-4, which is characterized in that the auxiliary agent packet
Include styrax degasser and levelling agent GLP588.
10. a kind of preparation method of high adhesion force extinction powder coating as described in any one of claims 1-9, feature exist
In the preparation method comprises the following steps: each raw material of formula ratio is melted after mixing machine mixes by double screw extruder
Melt extrusion in flakes, is then milled into powder with grinding machine, high adhesion force extinction powder can most be prepared after 200 mesh sieves afterwards
Coating.
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| CN201910647014.5A CN110256949B (en) | 2019-07-17 | 2019-07-17 | High-adhesion extinction powder coating and preparation method thereof |
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| CN201910647014.5A CN110256949B (en) | 2019-07-17 | 2019-07-17 | High-adhesion extinction powder coating and preparation method thereof |
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| CN115926589A (en) * | 2022-10-20 | 2023-04-07 | 梧州市泽和高分子材料有限公司 | High-adhesion extinction powder coating and preparation method thereof |
| CN117247588A (en) * | 2023-11-02 | 2023-12-19 | 宁波长阳科技股份有限公司 | Coating composition for enhancing adhesive force of transparent polyimide film and application thereof |
| CN117247588B (en) * | 2023-11-02 | 2024-02-09 | 宁波长阳科技股份有限公司 | Coating composition for enhancing adhesive force of transparent polyimide film and application thereof |
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