CN113652130B - Acid rain-proof infrared reflection coating and preparation method thereof - Google Patents
Acid rain-proof infrared reflection coating and preparation method thereof Download PDFInfo
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- CN113652130B CN113652130B CN202111084447.8A CN202111084447A CN113652130B CN 113652130 B CN113652130 B CN 113652130B CN 202111084447 A CN202111084447 A CN 202111084447A CN 113652130 B CN113652130 B CN 113652130B
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- 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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
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- 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
- C09D5/004—Reflecting paints; Signal paints
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- 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
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- 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
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- 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
- C09D7/66—Additives characterised by particle size
- C09D7/69—Particle size larger than 1000 nm
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- 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
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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Abstract
The invention relates to the field of C04B26/32, in particular to an acid rain-proof infrared reflection coating and a preparation method thereof, wherein the preparation raw materials comprise the following components in parts by weight: 40-60 parts of resin matrix, 20-30 parts of reflective pigment and 5-15 parts of filler. The infrared reflection coating provided by the invention is compounded by the gradient filler, so that the compatibility and compactness of the coating are improved, the problem of low reflectivity in the prior art is solved by adding the reflection pigment, the coating is strong in acid rain resistance and wear resistance, can be used outdoors for a long time, is particularly suitable for surface coatings of military aircrafts, and is light in weight, thin in coating amount and good in infrared reflectivity.
Description
Technical Field
The invention relates to the field of C04B26/32, in particular to an acid rain-proof infrared reflection coating and a preparation method thereof.
Background
The surface of some civil or military aircrafts, buildings, outdoor precise instruments and other objects often causes the change of performance or precision due to the rise of solar irradiation temperature, thus seriously affecting operation and safety. However, with the change of environment in recent years, the damage of acid rain and ozone layer is increasingly serious, and the traditional infrared reflection coating cannot meet the corrosion of the acid rain, so that the surface of the coating is cracked and damaged, and the internal objects are damaged.
CN110885602A discloses an organic-inorganic composite infrared reflection environment-friendly coating for military use and a preparation method thereof, which have good reflection effect when being used as a military coating in a targeted manner, but have poor corrosion effect on severe acid rain.
CN104140746A discloses a composite functional infrared reflection engineering machinery powder coating and a production process thereof, which has good salt spray resistance, but has the corrosion of acid rain, strong wind and strong ultraviolet for the aircraft which is outdoors all the year round, and the coping performance of the coating is relatively single.
Therefore, the field of infrared reflective coatings in the prior art is still not subdivided enough, and the development of an infrared reflective coating special for military aircrafts, particularly for acid rain protection, is needed.
Disclosure of Invention
The invention provides an acid rain-proof infrared reflection coating, which is prepared from the following raw materials in parts by weight: 40-60 parts of resin matrix, 20-30 parts of reflective pigment and 5-15 parts of filler.
As a preferred embodiment, the preparation raw materials comprise the following components in parts by weight: 50 parts of resin matrix, 25 parts of reflective pigment and 10 parts of filler.
As a preferred embodiment, the resin matrix includes at least one of a modified acrylic resin, an acrylic resin, a water-based epoxy resin, a fluorine resin, a urethane resin, and a phenol resin.
As a preferred embodiment, the resin matrix comprises a modified acrylic resin and a water-based epoxy resin.
To impart good ductility to the coating, the waterborne epoxy resin has an epoxy equivalent weight of 400-500 g/eq, and is available from Vegeto, guangzhou, new materials, inc. model No. 2055.
In a preferred embodiment, the modified acrylic resin is a fluororesin modified acrylic resin.
In a preferred embodiment, the fluororesin has a hydroxyl value of 42 to 54mgKOH/g.
In order to further enhance the coating film stability and adhesion of the coating material, the Gardner viscosity (25 ℃ C.) of the fluororesin is further defined to be S-V.
The fluororesin is purchased from Qingdao Dieyai Shengjing mathematics, and has the model of K-702.
The preparation method of the fluororesin modified acrylic resin comprises the following steps:
(1) Selecting diluent 1 and fluororesin to blend according to the mass ratio of (2-5) to 1, wherein the diluent 1 is dimethylbenzene;
(2) Selecting and blending a diluent 2 and acrylic resin in a mass ratio of (2-5) to 1, wherein the diluent 2 is xylene;
(3) And blending the diluted fluororesin and the acrylic resin according to the mass ratio of (2-5) to 1 to obtain the acrylic resin.
The acrylic resin has a viscosity (25 ℃) of 3000 to 4000cps, and is purchased from Weifang Fule New Material Co., ltd, and the model is CFW316.
Acrylic resin is a common resin base material in the field of coatings, but the acrylic resin has poor durability and chemical resistance, and the acrylic resin is often required to be modified. The applicant finds that when the hydroxyl value is 42-54mgKOH/g and the Gardner viscosity (25 ℃) is S-V, the prepared modified emulsion has obviously increased adhesion, film forming property and corrosion resistance, and is more suitable for the application of the modified emulsion on the surface of a military aircraft.
In a preferred embodiment, the weight ratio of the modified acrylic resin to the waterborne epoxy resin is (2-6): 1.
the hardness of the fluororesin modified acrylic resin is obviously reduced compared with that of pure fluorine resin, however, the excessive addition of the fluororesin causes the surface tension of the coating to be too low, and the film forming property is reduced, and the applicant finds that when the weight ratio of the modified acrylic resin to the water-based epoxy resin is (2-6): 1, the balance between high hardness and rapid film forming of the coating film layer can be achieved.
In order to improve the compatibility of the reflective pigment in a system, the oil absorption of the reflective pigment is 10-30g/100g, and the reflective pigment can be purchased from Shanghai refined chemicals, the model is Basff L0095, the color is red, and the crystal form is spinel.
As a preferred embodiment, the filler comprises at least one of sepiolite, diatomite, hollow glass beads, calcium carbonate, talcum powder, barium sulfate, titanium dioxide and lime powder.
In order to improve the compatibility of the filler and the compactness of the coating, the particle size D50 of the filler is not more than 70 μm.
In order to improve the anti-settling property of the coating, the compressive strength of the filler is 4-21MPa.
Preferably, the filler is hollow glass microspheres.
Preferably, the hollow glass microspheres are hollow glass microspheres with gradient particle size of 30-40 μm, gradient particle size of 40-50 μm and gradient particle size of 50-70 μm according to a mass ratio of (1-3): (2-3): (3-4) compounding.
Preferably, the hollow glass beads are hollow glass beads with gradient particle size of 30-40 μm, gradient particle size of 40-50 μm and gradient particle size of 50-70 μm, and the mass ratio of the hollow glass beads to the core material is 1:2:3, compounding.
Hollow glass microbeads having a gradient particle size of 30-40 μm were purchased from Zheng Zhong Shenglaite hollow microbead New Material Co., ltd, model number HL35.
Hollow glass microbeads having a gradient particle size of 40-50 μm were purchased from Zheng Zhong Shenglaite hollow microbead New Material Co., ltd, model number HL28.
Hollow glass microbeads with gradient particle size of 50-70 μm were purchased from new materials of hollow microbeads, st. Latt, zheng, and is model number HL20.
As a preferred embodiment, the raw materials for preparing the coating further comprise, by weight: 1-5 parts of an auxiliary agent and 20-50 parts of water.
The present invention is not particularly limited to the auxiliary agents, including but not limited to at least one of uv absorbers, antioxidants, leveling agents.
The second aspect of the invention provides a preparation method of an acid rain-proof infrared reflection coating, which comprises the following steps: (1) uniformly mixing a resin matrix with water; (2) adding the filler and the auxiliary agent into the mixture obtained in the step (1), and mixing and stirring the mixture; (3) Adding the reflective pigment into the mixture obtained in the step (2), and mixing and stirring to obtain the pigment.
Compared with the prior art, the invention has the following beneficial effects: the infrared reflection coating provided by the invention is compounded by the gradient filler, so that the compatibility and compactness of the coating are improved, the problem of low reflectivity in the prior art is solved by adding the reflection pigment, the coating is strong in acid rain resistance and wear resistance, can be used outdoors for a long time, is particularly suitable for surface coatings of military aircrafts, and is light in weight, thin in coating amount and good in infrared reflectivity.
Detailed Description
Example 1
In a first aspect of this embodiment, an acid rain resistant infrared reflective coating is provided, which comprises the following raw materials in parts by weight: 50 parts of resin matrix, 25 parts of reflective pigment, 10 parts of filler, 2 parts of assistant and 30 parts of water.
The resin matrix is fluororesin modified acrylic resin and waterborne epoxy resin, and the weight ratio of the fluororesin modified acrylic resin to the waterborne epoxy resin is 4:1, compounding.
The epoxy equivalent of the waterborne epoxy resin is 400-500 g/equivalent, and the waterborne epoxy resin is purchased from lotus & mu materials Co., ltd, guangzhou and has the model number of 2055.
The preparation method of the fluororesin modified acrylic resin comprises the following steps:
(1) Selecting and blending a diluent 1 and fluororesin according to a mass ratio of 3;
(2) Selecting a diluent 2 and acrylic resin to blend in a mass ratio of 3;
(3) And (3) blending the diluted fluororesin and the acrylic resin according to the mass ratio of 3.
The acrylic resin has a viscosity (25 ℃) of 3000 to 4000cps, and is purchased from Weifang Fule New Material Co., ltd, and the model is CFW316.
The fluororesin has a hydroxyl value of 42-54mgKOH/g, a Gardner viscosity (25 ℃) of S-V, and is purchased from Dieifei Seiki Seikagaku Kogyo Co., ltd., model number of K-702.
The oil absorption of the reflective pigment is 20g/100g, the reflective pigment is purchased from Shanghai refined color chemical industry, the model is Basv L0095, the color is red, and the crystal form is spinel.
The filler is hollow glass microspheres with the gradient particle size of 30-40 mu m, the gradient particle size of 40-50 mu m and the gradient particle size of 50-70 mu m, and the mass ratio of the hollow glass microspheres to the filler is 1:2:3 compounding
Hollow glass microbeads with gradient particle sizes of 30-40 μm were purchased from Zheng Zhong Shenglaite hollow microbead New Material Co., ltd, and had a compressive strength of 21MPa and a model number of HL35.
Hollow glass microbeads with gradient particle size of 40-50 μm were purchased from new materials of hollow microbeads, st. Latt, zheng, with compressive strength of 10MPa and model number HL28.
The hollow glass micro-beads with the gradient particle size of 50-70 μm are purchased from Zheng Zhong Shenglaite hollow micro-bead New Material Co., ltd, the compressive strength is 4MPa, and the model is HL20.
The auxiliary agent is an ultraviolet absorbent, in particular to an ultraviolet absorbent UV-531 which is purchased from Tata, litchi city, baodan, zinc and titanium industries, inc.
In a second aspect, this embodiment provides a method for preparing an acid rain resistant infrared reflective coating, comprising the steps of: (1) uniformly mixing a resin matrix with water; (2) adding the filler and the auxiliary agent into the mixture obtained in the step (1), and mixing and stirring the mixture; (3) Adding the reflective pigment into the mixture obtained in the step (2), and mixing and stirring to obtain the pigment.
Comparative example 1
A first aspect of the present comparative example provides an acid rain resistant infrared reflective coating, and the specific implementation manner is the same as that in example 1, except that the resin matrix is acrylic resin, and the water-based epoxy resin is mixed in a weight ratio of 4:1, compounding.
In a second aspect, a method of making an acid rain resistant infrared reflective coating is provided, as described in example 1.
Comparative example 2
This comparative example provides, in a first aspect, an acid rain resistant infrared reflective coating, as embodied in example 1, except that the fluororesin has a hydroxyl value of 66 to 78mgKOH/g, a Gardner viscosity (25 ℃) of W to Z, and is available from Diese electronics and refining Chemicals, inc., qingdao, model number K-705.
In a second aspect of this comparative example, a method of making an acid rain resistant infrared reflective coating is provided, the specific embodiment being the same as in example 1.
Comparative example 3
A first aspect of this comparative example provides an acid rain resistant infrared reflective coating, the specific embodiment being the same as example 1, except that the filler is hollow glass microspheres having a gradient particle size of 30 to 40 μm.
In a second aspect of this comparative example, a method of making an acid rain resistant infrared reflective coating is provided, the specific embodiment being the same as in example 1.
Comparative example 4
The first aspect of the present comparative example provides an acid rain resistant infrared reflective coating, which is prepared in the same manner as in example 1, except that the resin matrix is a modified acrylic resin, and the aqueous epoxy resin is a mixture of a resin having a weight ratio of 1:4, compounding.
In a second aspect, a method of making an acid rain resistant infrared reflective coating is provided, as described in example 1.
Performance testing
The coatings of examples and comparative examples were applied to aluminum panels and, after drying, were subjected to the following tests, with a coating thickness of 0.5mm.
The sunlight reflectance adopts a relative spectrum method, the value is more than or equal to 0.65, the standard reference is tested: JG/T235-2014.
Claims (4)
1. The acid rain resistant infrared reflection coating is characterized by comprising the following raw materials in parts by weight: 40-60 parts of resin matrix, 20-30 parts of reflective pigment and 5-15 parts of filler; the resin matrix comprises modified acrylic resin and waterborne epoxy resin; the modified acrylic resin is fluororesin modified acrylic resin, the hydroxyl value of the fluororesin is 42-54mgKOH/g, and the Gardner viscosity (at 25 ℃) is S-V; the weight ratio of the modified acrylic resin to the waterborne epoxy resin is (2-6): 1; the filler is hollow glass microspheres with gradient particle sizes of 30-40 μm, 40-50 μm and 50-70 μm, and the filler is prepared from the following components in percentage by mass (1-3): (2-3): (3-4) compounding; the oil absorption of the reflective pigment is 10-30g/100g;
the preparation method of the fluororesin modified acrylic resin comprises the following steps:
(1) Selecting a diluent 1 and fluororesin according to the mass ratio (2-5): 1 blending, wherein the diluent 1 is dimethylbenzene;
(2) Selecting a diluent 2 and acrylic resin according to the mass ratio (2-5): 1, the diluent 2 is dimethylbenzene;
(3) Mixing the diluted fluororesin and the diluted acrylic resin according to the mass ratio of (2-5): 1, blending to obtain the product.
2. The acid rain resistant infrared reflective coating of claim 1, wherein the aqueous epoxy resin has an epoxy equivalent weight of 400 to 500 g/eq.
3. The acid rain resistant infrared reflective coating of claim 1, wherein the coating is prepared from the following raw materials in parts by weight: 1-5 parts of an auxiliary agent and 20-50 parts of water.
4. A method for preparing the acid rain resistant infrared reflective coating according to claim 3, comprising the steps of: (1) uniformly mixing a resin matrix with water; (2) adding the filler and the auxiliary agent into the mixture obtained in the step (1), and mixing and stirring the mixture; (3) And (3) adding a reflective pigment into the mixture obtained in the step (2), and mixing and stirring the mixture to obtain the pigment.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010150354A (en) * | 2008-12-24 | 2010-07-08 | Toda Kogyo Corp | Infrared reflective composite black pigment, method for producing the same, and paint and resin composition using the infrared reflective composite black pigment |
| JP2011219754A (en) * | 2010-03-25 | 2011-11-04 | Kajima Corp | Radiation paint composition, radiation coating material and method of manufacturing radiation coating material |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1515633A (en) * | 2003-01-06 | 2004-07-28 | 马承银 | Heat-isolating coating capable of reflecting solar heat ray |
| JP2004251108A (en) * | 2003-01-31 | 2004-09-09 | Kajima Road Co Ltd | Paving body for road |
| CN101215438B (en) * | 2008-01-03 | 2010-12-08 | 海门市森达装饰材料有限公司 | Anti-soiling aging-resisting stainless steel paint and preparation method thereof |
| CN101735699A (en) * | 2009-12-11 | 2010-06-16 | 中国建筑材料科学研究总院 | Fluororesin modified acrylic acid durable heat-insulating anti-corrosive coating |
| CN103725124B (en) * | 2013-08-02 | 2017-02-15 | 太仓派欧技术咨询服务有限公司 | High-radiation heat-insulated coating |
| CN110105798A (en) * | 2019-05-31 | 2019-08-09 | 宁波瑞凌新能源科技有限公司 | Cement base radiation refrigeration dry powder paint, building coating, coating production |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010150354A (en) * | 2008-12-24 | 2010-07-08 | Toda Kogyo Corp | Infrared reflective composite black pigment, method for producing the same, and paint and resin composition using the infrared reflective composite black pigment |
| JP2011219754A (en) * | 2010-03-25 | 2011-11-04 | Kajima Corp | Radiation paint composition, radiation coating material and method of manufacturing radiation coating material |
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