CN113845821A - Middle layer powder coating for three-layer sintered powder outer anticorrosive layer and preparation method thereof - Google Patents
Middle layer powder coating for three-layer sintered powder outer anticorrosive layer and preparation method thereof Download PDFInfo
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- CN113845821A CN113845821A CN202111327479.6A CN202111327479A CN113845821A CN 113845821 A CN113845821 A CN 113845821A CN 202111327479 A CN202111327479 A CN 202111327479A CN 113845821 A CN113845821 A CN 113845821A
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- 239000000843 powder Substances 0.000 title claims abstract description 81
- 239000011248 coating agent Substances 0.000 title claims abstract description 65
- 238000000576 coating method Methods 0.000 title claims abstract description 65
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000010410 layer Substances 0.000 claims abstract description 107
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 20
- -1 glycidyl ester Chemical class 0.000 claims abstract description 19
- 150000001412 amines Chemical class 0.000 claims abstract description 16
- 239000000945 filler Substances 0.000 claims abstract description 10
- 229920000578 graft copolymer Polymers 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 229920005989 resin Polymers 0.000 claims abstract description 9
- 239000011347 resin Substances 0.000 claims abstract description 9
- 239000011247 coating layer Substances 0.000 claims abstract description 6
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 4
- 239000003973 paint Substances 0.000 claims abstract description 4
- 239000000049 pigment Substances 0.000 claims abstract description 4
- 239000003822 epoxy resin Substances 0.000 claims description 10
- 229920000647 polyepoxide Polymers 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 8
- 229910021536 Zeolite Inorganic materials 0.000 claims description 7
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 7
- 239000010457 zeolite Substances 0.000 claims description 7
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical group NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 238000010298 pulverizing process Methods 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 abstract description 25
- 238000005260 corrosion Methods 0.000 abstract description 12
- 125000003700 epoxy group Chemical group 0.000 abstract description 11
- 230000007797 corrosion Effects 0.000 abstract description 8
- 229920001225 polyester resin Polymers 0.000 abstract description 4
- 239000004645 polyester resin Substances 0.000 abstract description 4
- 238000005886 esterification reaction Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 125000004185 ester group Chemical group 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- OUPZKGBUJRBPGC-UHFFFAOYSA-N 1,3,5-tris(oxiran-2-ylmethyl)-1,3,5-triazinane-2,4,6-trione Chemical compound O=C1N(CC2OC2)C(=O)N(CC2OC2)C(=O)N1CC1CO1 OUPZKGBUJRBPGC-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920006334 epoxy coating Polymers 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000010456 wollastonite Substances 0.000 description 2
- 229910052882 wollastonite Inorganic materials 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- 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
- 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
- C09D5/08—Anti-corrosive paints
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)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention provides a middle layer powder coating for a three-layer sintered powder outer anticorrosive layer and a preparation method thereof, which are used for solving the problems of high cost and poor anticorrosive performance of an anticorrosive outer coating in the prior art. The middle layer powder coating is used for forming a middle coating layer containing a graft copolymer and comprises the following components in percentage by weight: 50-70% of glycidyl ester type resin, 4-8% of amine curing agent, 15-20% of filler and 2-5% of functional auxiliary agent and pigment. According to the middle layer powder coating, a graft reaction is carried out in coating to form a graft copolymer, meanwhile, a glycidyl ester type resin is reacted with a bottom layer curing agent, an amine type curing agent is reacted with an epoxy group in a surface layer, and then the bottom layer and the surface layer can be well fused into the middle layer through the assistance of a filler, so that the bonding strength is further increased, and the corrosion resistance of an anticorrosive coating is improved; the middle layer does not have esterification reaction with the polyester resin of the surface layer, no micromolecules are separated out, and the paint is safe and environment-friendly; the preparation method is simple and the cost is low.
Description
Technical Field
The invention belongs to the field of powder coating, and particularly relates to a middle-layer powder coating for a three-layer sintered powder outer anticorrosive layer and a preparation method thereof.
Background
In the gas, liquid or loose solid transportation of large industrial and mining enterprises, overhead pipelines need to be erected. The overhead line is exposed to the atmosphere, and the environment is very complicated and is subjected to ultraviolet irradiation, rain wash with different acid values and high and low temperature change, so that the outer coating of the steel pipe of the overhead line is required to have excellent weather resistance, outstanding adhesion, corrosion resistance, temperature change resistance and other properties.
In the prior art, a two-layer coating of a bottom layer coating and a surface layer coating is generally adopted as an external coating of the overhead pipeline, wherein the bottom layer generally adopts an epoxy powder coating, and the surface layer generally adopts a polyester powder coating. However, when the epoxy coating is in contact with the polyester coating, volatile substances are easily generated by reaction, and the volatile substances remained in the system influence the density of the coating and reduce the corrosion resistance. The three-layer sintered powder anti-corrosion outer coating comprising the bottom layer, the middle layer and the surface layer can also be adopted, but the cost of the existing three-layer sintered powder anti-corrosion outer coating is higher, and the anti-corrosion effect still does not achieve the ideal effect.
Disclosure of Invention
In view of the above-mentioned defects or shortcomings in the prior art, the present invention aims to provide a middle layer powder coating for a three-layer sintered powder outer anticorrosive layer and a preparation method thereof, wherein the preparation process and the use process can meet the environmental protection requirement, and the formed middle coating layer can increase the adhesive property of the bottom layer and the surface layer and improve the corrosion resistance of the outer coating.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
in a first aspect, the embodiments of the present invention provide a middle layer powder coating for three sintered powder outer anticorrosive layers, the middle layer powder coating is used for forming a middle coating layer containing a graft copolymer, and the middle layer powder coating comprises, by weight:
as a preferred embodiment of the present invention, a glycidyl ester type epoxy resin is used as the glycidyl ester type resin.
As a preferred embodiment of the invention, the filler comprises a zeolite.
As a preferred embodiment of the present invention, the amine-based curing agent is dicyandiamide.
As a preferred embodiment of the present invention, the middle layer powder coating forms a graft copolymer when applied to a three-layer sintered powder corrosion protective topcoat, the following reaction occurs:
after the reaction is complete, a graft copolymer is formed.
In a second aspect, the embodiment of the present invention further provides a preparation method of a middle layer powder coating for three sintered powder outer anticorrosive layers, the preparation method includes the following steps:
step A, weighing 50-70 wt.% of glycidyl ester type resin, 4-8 wt.% of amine curing agent, 15-20 wt.% of filler, 2-5 wt.% of functional auxiliary agent and pigment according to the weight percentage;
step B, premixing the raw materials for 5-10min, melting and uniformly mixing the raw materials by a double-screw extruder, and extruding; controlling the rotating speed of the double-screw extruder within the range of 1300-1400r/min, wherein the extrusion temperature is 100 ℃ in the first zone, 105 ℃ in the second zone and 0.5-0.7mm of the distance between the two rollers;
and step C, pulverizing the extruded tablets by a pulverizer to obtain the intermediate layer powder coating.
As a preferred embodiment of the invention, in the step C, the rotating speed of the pulverizer is 23000-.
As a preferred embodiment of the invention, the powder coating of the intermediate layer obtained has a particle size distribution in the range of D10 of 10-15 μm, D50 of 40-50 μm and D90 of 60-65 μm.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
the intermediate layer powder coating for the three-layer sintered powder outer anticorrosive layer has the advantages that while the outer coating is applied, the epoxy group of glycidyl ester type epoxy resin reacts with the bottom layer curing agent, the amine curing agent reacts with the epoxy group in the surface layer, the filling materials such as zeolite are of a porous structure, the infiltration of the bottom layer surface layer powder can be facilitated, the bottom layer and the surface layer can be well blended into the zeolite in the intermediate layer, the bonding strength of the intermediate layer, the bottom layer and the surface layer is further increased, the section porosity, the adhesive force and the chemical corrosion resistance of the anticorrosive coating are improved, and the anticorrosive performance is improved; (ii) a The middle layer does not have esterification reaction with the polyester resin of the surface layer, and no micromolecules are separated out, so that the paint is safe and environment-friendly; meanwhile, the preparation method is simple, the raw materials are easy to obtain, and the production cost is effectively reduced.
Detailed Description
The present invention will be described in further detail with reference to examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The embodiment of the invention provides a middle layer powder coating for a three-layer sintered powder outer anticorrosive layer and a preparation method thereof. The three-layer sintered powder comprises a bottom epoxy coating, a middle coating and a surface polyester coating, wherein the middle coating formed by the middle powder coating is arranged between the bottom and the surface, so that the adhesion of the bottom and the surface is improved, and the overall performance of the anticorrosive outer coating is enhanced.
The middle layer powder coating is used for forming a middle coating layer containing a graft copolymer, and comprises the following components in percentage by weight:
the glycidyl ester type resin has high adhesive force and good weather resistance, contains ester groups and epoxy groups, can be well blended into the bottom layer and the surface layer, and effectively increases the bonding strength with the bottom layer and the surface layer. Preferably, the glycidyl ester type resin employs a glycidyl ester type epoxy resin. Epoxy groups of the glycidyl ester type epoxy resin react with a bottom layer curing agent, ester groups react with an amine curing agent, and then the bonding force between the three layers is increased through the reaction of the amine curing agent and the epoxy groups of the surface layer.
The amine curing agent effectively reduces the content of hydroxyl, avoids volatile substances generated by reaction with carboxyl, and enables the coating to be more compact. Preferably, the amine curing agent is dicyandiamide. When the surfaces of a steel pipe and the like are coated to form a three-layer sintering powder anticorrosion outer coating, dicyandiamide in the middle layer powder coating reacts with glycidyl ester type epoxy resin as follows:
after the reaction is complete, a graft copolymer is formed.
The amine curing agent only reacts with the epoxy group in the surface layer, but does not react with the polyester resin of the surface layer, so that no micromolecule is separated out, no other impurities are formed, the environment is not polluted, and the environment is more environment-friendly.
The filler adopts wollastonite powder and/or zeolite to seal the coating, so that the water absorption resistance of the coating is increased, the cost is reduced, and the extrusion environment is improved. Preferably, the filler contains at least zeolite. The zeolite is in a porous structure, so that the infiltration of powder of the bottom layer and the surface layer can be facilitated, the middle layer can be better blended into the bottom layer and the surface layer, and the binding force between the middle layer and the bottom layer and the surface layer can be further increased. In addition, the filler may further include wollastonite powder.
According to the technical scheme, the glycidyl ester type epoxy resin and the amine curing agent are main reactants of the intermediate layer powder coating provided by the embodiment. While reacting with itself, the epoxy groups of the glycidyl ester type epoxy resin react with the bottom layer curing agent, and the amine type curing agent reacts with the epoxy groups in the top layer, such as the epoxy groups of triglycidyl isocyanurate TGIC. The glycidyl ester type epoxy resin and the amine curing agent do not contain hydroxyl, do not have esterification reaction with polyester resin, and do not separate out micromolecules; meanwhile, the glycidyl ester type epoxy resin contains ester groups and epoxy groups, can be well fused into the bottom layer and the surface layer, and further increases the bonding strength with the bottom layer and the surface layer.
The embodiment of the invention also provides a preparation method of the middle layer powder coating for the three sintered powder outer anticorrosive layers, which comprises the following steps:
step A, weighing 50-70 wt.% of glycidyl ester type resin, 4-8 wt.% of amine curing agent, 15-20 wt.% of filler, 2-5 wt.% of functional auxiliary agent and pigment according to the weight percentage.
Step B, premixing the raw materials for 5-10min, melting and uniformly mixing the raw materials by a double-screw extruder, and extruding; the rotating speed of the double-screw extruder is controlled within the range of 1300-1400r/min, the extrusion temperature is 100 ℃ in the first zone, 105 ℃ in the second zone, and the distance between the two rollers is 0.5-0.7 mm.
And step C, pulverizing the extruded tablets by a pulverizer to obtain the intermediate layer powder coating.
Wherein, in the step, the rotating speed of the pulverizer is 23000-26000r/min, the pulverizing time is 8-10s, and the amount of the tablet powder put into the pulverizer is 1/3-2/3 of the capacity of the pulverizer. The obtained intermediate layer powder coating has particle size distribution in the ranges of D10 of 10-15 μm, D50 of 40-50 μm and D90 of 60-65 μm.
The middle layer powder coating prepared by the invention is used for the middle layer of the three-layer sintered powder outer anticorrosive layer of the overhead pipeline. When three-layer sintering powder spraying is carried out, three kinds of powder, namely a bottom layer powder, a middle layer powder and a surface layer powder, are respectively filled in each set of system at a distance of 2 meters through 3 sets of spraying systems, the steel pipe moves forward at a fixed linear speed, the bottom layer powder is firstly sprayed at the same position, the middle layer powder is then sprayed, and the surface layer powder is finally sprayed.
After the three-layer sintering powder anti-corrosion coating is coated, the performance of the overhead pipeline coated with the three-layer sintering powder is detected, and the result is as follows: section porosity, grade 1; boiling at 75 ℃/28 days for adhesion, grade 1; chemical corrosion resistance is realized at 23 ℃/90 days, and the phenomena of decoloration, bulging, softening, foaming and peeling, cracking, stripping, adhesion reduction and the like are avoided. Therefore, the section porosity, adhesive force and chemical corrosion resistance of the anticorrosive coating are greatly improved.
According to the technical scheme, the preparation method of the intermediate layer powder coating improves the binding force of the intermediate coating layer with the bottom layer and the surface layer through the adjustment and optimization of the component proportion; meanwhile, the raw materials are easy to obtain, the preparation method is simple, the cost is reduced, and the method is suitable for large-scale production.
The foregoing description is only exemplary of the preferred embodiments of the invention and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention herein disclosed is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above features or their equivalents without departing from the spirit of the invention. For example, the above features and (but not limited to) features having similar functions disclosed in the present invention are mutually replaced to form the technical solution.
Claims (8)
1. A middle layer powder coating for three sintered powder outer anticorrosive layers is characterized in that the middle layer powder coating is used for forming a middle coating layer containing a graft copolymer, and the middle layer powder coating comprises the following components in percentage by weight:
2. the middle layer powder coating for the three sintered powder outer anticorrosive layer according to claim 1, wherein the glycidyl ester type resin is a glycidyl ester type epoxy resin.
3. A middle layer powder coating for a three layer sintered powder outer anticorrosive layer according to claim 1, characterized in that the filler comprises zeolite.
4. The middle layer powder coating for the three sintered powder outer anticorrosive layers according to claim 1, characterized in that the amine curing agent is dicyandiamide.
5. The middle powder coating for a three-layer sintered powder outer anticorrosive layer according to claim 4, wherein the middle powder coating forms a graft copolymer when applied to a three-layer sintered powder outer anticorrosive coating, and the following reaction occurs:
after the reaction is complete, a graft copolymer is formed.
6. A preparation method of a middle layer powder coating for three sintered powder outer anticorrosive layers is characterized by comprising the following steps:
step A, weighing 50-70 wt.% of glycidyl ester type resin, 4-8 wt.% of amine curing agent, 15-20 wt.% of filler, 2-5 wt.% of functional auxiliary agent and pigment according to the weight percentage;
step B, premixing the raw materials for 5-10min, melting and uniformly mixing the raw materials by a double-screw extruder, and extruding; controlling the rotating speed of the double-screw extruder within the range of 1300-1400r/min, wherein the extrusion temperature is 100 ℃ in the first zone, 105 ℃ in the second zone and 0.5-0.7mm of the distance between the two rollers;
and step C, pulverizing the extruded tablets by a pulverizer to obtain the intermediate layer powder coating.
7. The method for preparing the powder coating of the middle layer for the three sintered powder outer anticorrosive layers as claimed in claim 6, wherein in the step C, the rotation speed of the crusher is 23000-26000r/min, the crushing time is 8-10s, and the amount of the tablets put into the crusher is 1/3-2/3 of the capacity of the crusher.
8. The method for preparing powder paint of the middle layer used for the outer anticorrosive layer of three-layer sintered powder as claimed in claim 6, wherein the powder paint of the middle layer is obtained with particle size distribution in the range of D10 of 10-15 μm, D50 of 40-50 μm and D90 of 60-65 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111327479.6A CN113845821A (en) | 2021-11-10 | 2021-11-10 | Middle layer powder coating for three-layer sintered powder outer anticorrosive layer and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111327479.6A CN113845821A (en) | 2021-11-10 | 2021-11-10 | Middle layer powder coating for three-layer sintered powder outer anticorrosive layer and preparation method thereof |
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| Publication Number | Publication Date |
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| CN113845821A true CN113845821A (en) | 2021-12-28 |
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| CN202111327479.6A Pending CN113845821A (en) | 2021-11-10 | 2021-11-10 | Middle layer powder coating for three-layer sintered powder outer anticorrosive layer and preparation method thereof |
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Citations (5)
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|---|---|---|---|---|
| CN101054488A (en) * | 2007-05-30 | 2007-10-17 | 翟翠明 | Application of zeolite powder in wall coating |
| CN102061120A (en) * | 2010-12-14 | 2011-05-18 | 上海纳米技术及应用国家工程研究中心有限公司 | Compound type insulating powder coating and preparation method thereof |
| CN106398460A (en) * | 2016-08-30 | 2017-02-15 | 天津凯华绝缘材料股份有限公司 | High-weather-resistance and high-flexibility epoxy resin composition and preparation method thereof |
| CN110527401A (en) * | 2019-09-09 | 2019-12-03 | 广州擎天材料科技有限公司 | A kind of powdery paints and workpiece |
| CN113321988A (en) * | 2021-07-14 | 2021-08-31 | 悦诚(扬州)新材料有限公司 | Epoxy powder coating for pipeline corrosion prevention and spraying process of pipeline corrosion prevention coating |
-
2021
- 2021-11-10 CN CN202111327479.6A patent/CN113845821A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101054488A (en) * | 2007-05-30 | 2007-10-17 | 翟翠明 | Application of zeolite powder in wall coating |
| CN102061120A (en) * | 2010-12-14 | 2011-05-18 | 上海纳米技术及应用国家工程研究中心有限公司 | Compound type insulating powder coating and preparation method thereof |
| CN106398460A (en) * | 2016-08-30 | 2017-02-15 | 天津凯华绝缘材料股份有限公司 | High-weather-resistance and high-flexibility epoxy resin composition and preparation method thereof |
| CN110527401A (en) * | 2019-09-09 | 2019-12-03 | 广州擎天材料科技有限公司 | A kind of powdery paints and workpiece |
| CN113321988A (en) * | 2021-07-14 | 2021-08-31 | 悦诚(扬州)新材料有限公司 | Epoxy powder coating for pipeline corrosion prevention and spraying process of pipeline corrosion prevention coating |
Non-Patent Citations (4)
| Title |
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| 南仁植: "《粉末涂料与涂装技术》", 31 May 2000, 化学工业出版社 * |
| 孙建民: "《家用电器涂装技术》", 30 April 2000, 海洋出版社 * |
| 郑天亮: "《现代涂料与涂装工程》", 30 June 2003, 北京航空航天大学出版社 * |
| 顾国芳等: "《新型装修材料及其应用》", 30 June 1996, 中国建筑工业出版社 * |
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Application publication date: 20211228 |