CN106010230A - Preparation method of wear-resistant coating with photocatalysis performance - Google Patents
Preparation method of wear-resistant coating with photocatalysis performance Download PDFInfo
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- CN106010230A CN106010230A CN201610553406.1A CN201610553406A CN106010230A CN 106010230 A CN106010230 A CN 106010230A CN 201610553406 A CN201610553406 A CN 201610553406A CN 106010230 A CN106010230 A CN 106010230A
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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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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- 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
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- 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
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- 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
- C08K2003/2244—Oxides; Hydroxides of metals of zirconium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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Abstract
The invention relates to a preparation method of a wear-resistant coating with photocatalysis performance. The preparation method comprises the steps of lipophilic modification of a nano powder body, preparation of oily dispersion liquid and preparation of a functional coating: uniformly coating glass with the oily dispersion liquid, placing the glass into a muffle furnace for baking for 2 hours at the baking temperature of 500 DEG C, dispersing two types of powder into simethicone with a specific wet grinding and dispersing process to form uniform oily dispersion liquid, and then preparing a wear-resistant thin film coating with the photocatalysis performance; therefore, a photocatalysis function is realized, and the service life of the coating is not shortened; the process is simple and environment-friendly.
Description
Technical field
The present invention relates to the preparation method of a kind of wear-resistant coating with photo-catalysis capability.Nanometer anatase titania nonpoisonous and tasteless, that stability is strong, ultraviolet shielded and visible light permeability good, photo-catalysis capability is excellent is together evenly spread in dimethicone with nano silicon, form homogeneous oily dispersion, then it is evenly applied on glass, makes the wear-resistance thin film coating with photo-catalysis capability through high-temperature baking at glass surface.
Background technology
Nanometer anatase titania is nonpoisonous and tasteless, stability is strong, ultraviolet shielded and visible light permeability good, photo-catalysis capability is excellent, under bond adhesion effect, it is applied to the fields such as weaving, coating, building, cosmetics, the effects such as continual and steady ultraviolet shielded, the bactericidal of destination object and automatically cleaning can be given.But increasing research shows in recent years, and energetic free radical produced by anatase titanium dioxide photocatalysis has the strongest reactivity, and the various macromolecules with C-C key as main chain are paid carrier by it the strongest aging infringement.Which greatly limits anatase titanium dioxide application in organic collective.
Polysiloxanes, with Si-O key as main chain backbone, has stronger resistivity to above-mentioned free radical.Thus using polysiloxanes as organic carrier, become an important directions of current anatase titanium dioxide coating applied research.Dimethicone has the characteristic of excellence, as water insoluble, nontoxic, odorless, colourless, transparent etc., is widely used in various production link, is a kind of preferably resin base material.Nano silicon, also known as white carbon, can improve the suspension stability of coating, thixotropy, weatherability, abrasion resistance etc., make the bond strength of film be greatly improved, and hardness of film increases, and clean surfaces ability also obtains improvement.
Inorganic particle includes that the surface nature of nano titanium oxide and silicon dioxide differs farther out with the surface nature of organic polymer simultaneously, and granule is poor with the compatibility of organic polymer.In the composite, the compound of material directly contacts realization by interface, microstructure and the character at interface will directly affect its adhesion character, bonding strength and the mechanical property of composite and physical function, increase the interface binding power of micro-nano particle and polymer, the performance of composite can be improved.Additionally, the degree of scatter that nano-powder is in media as well determines the performance of its excellent properties, it is thus necessary to nano-powder is carried out surface modification or modification to improve the nano-powder compatibility in media as well and dispersibility.
By coupling agent modified raising nano titanium oxide and the lipophile of nano silica powder, recycling wet grinding carries out powder body depolymerization and granularity refinement, finally realize function powder in dimethicone, reach the homogenization dispersion of micro/nano-scale, and then coating film forming.
Summary of the invention
For overcoming the much help of prior art, the present invention relates to the preparation method of a kind of wear-resistant coating with photo-catalysis capability.
The preparation method of a kind of wear-resistant coating with photo-catalysis capability, it is characterised in that comprise the following steps:
(1) oleophylic of nano-powder is modified:
Weighing a certain amount of coupling agent to join in deionized water and stir, be subsequently adding nano-powder making the mass ratio that mass ratio is 0.5-2:100, nano-powder and deionized water that pre-stirring obtains slurry, coupling agent and nano-powder is 1:2-20；Using high-speed shearing equipment to be modified afore-mentioned slurry processing, shear rate is 10000-40000rpm, and temperature is maintained at 35 DEG C-80 DEG C, processes 10-45 minute；Slurry is placed in convection oven drying, oven temperature 60 DEG C-80 DEG C；The dry powder block obtained carries out machinery coarse pulverization, and sieving through 80 eye mesh screens obtains modified fine powder；
(2) prepared by oily dispersion:
Gained modification fine powder in (1) is added in dimethicone, after pre-stirring, pump into wet grinding intracavity, carry out wet grinding, obtain oily dispersion；The mass ratio of modified fine powder and dimethicone is 0.5-5:100, and it is zirconium dioxide solid microsphere that the mill of wet grinding is situated between, and grinding rotating speed is 800-4000rpm, milling time 0.5-10 hour；
(3) preparation of functional coating:
(2) gained oily dispersion is evenly applied on glass, is placed in Muffle furnace baking, baking temperature 400-500 DEG C, baking duration 2-4 hour.
Described coupling agent is gamma-aminopropyl-triethoxy-silane (KH-550).
Described nano-powder be diameter of particle scope in 0.05-0.1 μm, composition be the mass ratio of silicon dioxide and the mixture of anatase titanium dioxide powder body, silicon dioxide and titanium dioxide be 1:1-3.
The diameter of described wet grinding mill Jie's microsphere is between 0.1-0.4mm.
The described a size of 0.05-0.2 μm of the solid phase particles in oily dispersion.
It is an object of the invention to utilize the dimethicone using Si-O key as main chain as coating resin, avoid the nanometer anatase titania photoaging to organic resin, and by simple and environmentally-friendly wet grinding technique, function powder is distributed in dimethicone, form homogeneous oily dispersion, then the wear-resistance thin film coating with photo-catalysis capability is made, both achieve photo-catalysis function, the most do not damage the life-span of coating.
Nanometer anatase titania is nonpoisonous and tasteless, stability is strong, ultraviolet shielded good with visible light permeability, photo-catalysis capability is excellent, but the life-span of the resin that easily detracts when using in coating, the dimethicone characteristic with Si-O key as main chain then can avoid this problem, and have water insoluble, nontoxic, odorless, colourless, the feature such as transparent, suitable as becoming film base material, it is aided with nano silicon again, with specific wet grinding dispersing technology, two kinds of powder body are distributed in dimethicone, form homogeneous oily dispersion, then the wear-resistance thin film coating with photo-catalysis capability is made, both photo-catalysis function had been achieved, the most do not damage the life-span of coating, technique is simple and environmentally-friendly.
Detailed description of the invention
Further illustrate the present invention below by embodiment, but the invention is not restricted to following example and specifically express content.
Embodiment 1:
(1) oleophylic of nano-powder is modified
Weigh 1.5 grams of coupling agent KH-550 to join in 1000 grams of deionized waters and stir, be subsequently adding 50 grams of silica powders and 50 grams of zinc oxide are made pre-stirring and obtained slurry.Using high-speed shearing equipment to be modified afore-mentioned slurry processing, shear rate is 40000rpm, and temperature is maintained at 70 DEG C, processes 30 minutes.Slurry is placed in convection oven drying, oven temperature 80 DEG C.The dry powder block obtained carries out machinery coarse pulverization, and sieving through 80 eye mesh screens obtains modified fine powder.
(2) prepared by oily dispersion
Gained modification fine powder in (1) is taken 20 grams and joins in 2000 grams of dimethicones, after pre-stirring, pump into wet grinding intracavity, carry out wet grinding, obtain oily dispersion.Mill Jie zirconium dioxide microsphere diameter 0.2mm, grinding rotating speed is 3000rpm, milling time 6 hours.
(3) preparation of functional coating
(2) gained oily dispersion is evenly applied on glass, is placed in Muffle furnace baking, baking temperature 450 DEG C, baking duration 4 hours.
Embodiment 2:
(1) oleophylic of nano-powder is modified
Weigh 0.5 gram of coupling agent KH-550 to join in 500 grams of deionized waters and stir, be subsequently adding 25 grams of silica powders and 75 grams of zinc oxide are made pre-stirring and obtained slurry.Using high-speed shearing equipment to be modified afore-mentioned slurry processing, shear rate is 10000rpm, and temperature is maintained at 60 DEG C, processes 45 minutes.Slurry is placed in convection oven drying, oven temperature 70 DEG C.The dry powder block obtained carries out machinery coarse pulverization, and sieving through 80 eye mesh screens obtains modified fine powder.
(2) prepared by oily dispersion
Gained modification fine powder in (1) is taken 40 grams and joins in 2000 grams of dimethicones, after pre-stirring, pump into wet grinding intracavity, carry out wet grinding, obtain oily dispersion.Mill Jie zirconium dioxide microsphere diameter 0.4mm, grinding rotating speed is 2500rpm, milling time 3 hours.
(3) preparation of functional coating
(2) gained oily dispersion is evenly applied on glass, is placed in Muffle furnace baking, baking temperature 400 DEG C, baking duration 3 hours.
Embodiment 3:
(1) oleophylic of nano-powder is modified
Weigh 1.8 grams of coupling agent KH-550 to join in 1800 grams of deionized waters and stir, be subsequently adding 30 grams of silica powders and 60 grams of zinc oxide are made pre-stirring and obtained slurry.Using high-speed shearing equipment to be modified afore-mentioned slurry processing, shear rate is 30000rpm, and temperature is maintained at 35 DEG C, processes 45 minutes.Slurry is placed in convection oven drying, oven temperature 60 DEG C.The dry powder block obtained carries out machinery coarse pulverization, and sieving through 80 eye mesh screens obtains modified fine powder.
(2) prepared by oily dispersion
Gained modification fine powder in (1) is taken 40 grams and joins in 800 grams of dimethicones, after pre-stirring, pump into wet grinding intracavity, carry out wet grinding, obtain oily dispersion.Mill Jie zirconium dioxide microsphere diameter 0.1mm, grinding rotating speed is 800rpm, milling time 10 hours.
(3) preparation of functional coating
(2) gained oily dispersion is evenly applied on glass, is placed in Muffle furnace baking, baking temperature 500 DEG C, baking duration 2 hours.
Claims (5)
1. the preparation method of a wear-resistant coating with photo-catalysis capability, it is characterised in that comprise the following steps:
(1) oleophylic of nano-powder is modified:
Weighing a certain amount of coupling agent to join in deionized water and stir, be subsequently adding nano-powder making the mass ratio that mass ratio is 0.5-2:100, nano-powder and deionized water that pre-stirring obtains slurry, coupling agent and nano-powder is 1:2-20；Using high-speed shearing equipment to be modified afore-mentioned slurry processing, shear rate is 10000-40000rpm, and temperature is maintained at 35 DEG C-80 DEG C, processes 10-45 minute；Slurry is placed in convection oven drying, oven temperature 60 DEG C-80 DEG C；The dry powder block obtained carries out machinery coarse pulverization, and sieving through 80 eye mesh screens obtains modified fine powder；
(2) prepared by oily dispersion:
Gained modification fine powder in (1) is added in dimethicone, after pre-stirring, pump into wet grinding intracavity, carry out wet grinding, obtain oily dispersion；The mass ratio of modified fine powder and dimethicone is 0.5-5:100, and it is zirconium dioxide solid microsphere that the mill of wet grinding is situated between, and grinding rotating speed is 800-4000rpm, milling time 0.5-10 hour；
(3) preparation of functional coating:
(2) gained oily dispersion is evenly applied on glass, is placed in Muffle furnace baking, baking temperature 400-500 DEG C, baking duration 2-4 hour.
The preparation method of a kind of wear-resistant coating with photo-catalysis capability, it is characterised in that described coupling agent is gamma-aminopropyl-triethoxy-silane (KH-550).
A kind of preparation method of the wear-resistant coating with photo-catalysis capability, it is characterized in that, described nano-powder is that diameter of particle scope is in 0.05-0.1 μm, composition be the mass ratio of silicon dioxide and the mixture of anatase titanium dioxide powder body, silicon dioxide and titanium dioxide be 1:1-3.
The preparation method of a kind of wear-resistant coating with photo-catalysis capability, it is characterised in that the diameter of described wet grinding mill Jie's microsphere is between 0.1-0.4mm.
The preparation method of a kind of wear-resistant coating with photo-catalysis capability, it is characterised in that the described a size of 0.05-0.2 μm of the solid phase particles in oily dispersion.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999067336A1 (en) * | 1998-06-25 | 1999-12-29 | Csl Silicones Inc. | One-part organopolysiloxane rubber composition for use as a corrosion protection coating on metals |
| CN1752165A (en) * | 2004-09-23 | 2006-03-29 | 张崇照 | Organic silicon transparent wear-proof hardened coating and mfg. process thereof |
| CN1847341A (en) * | 2006-03-30 | 2006-10-18 | 上海电力学院 | Prepn process of nanometer composite organic siloxane paint resisting corrosion of chlorine ion |
| CN1872918A (en) * | 2006-06-27 | 2006-12-06 | 上海大学 | Oleophilic modificatioon method for tiny inorganic Nano powder |
| CN101020800A (en) * | 2007-02-15 | 2007-08-22 | 中国科学院上海硅酸盐研究所 | Insulating composite paint of nanometer inorganic matter and polymer and its prepn |
| CN102827500A (en) * | 2012-07-16 | 2012-12-19 | 长兴（中国）投资有限公司 | Scratch-resistant and wear-resistant composition and preparation method and application thereof |
| CN104387960A (en) * | 2014-11-28 | 2015-03-04 | 苏州伊埃夫化学材料科技有限公司 | High-performance nano-composite structure coating and preparation method thereof |
-
2016
- 2016-07-14 CN CN201610553406.1A patent/CN106010230B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999067336A1 (en) * | 1998-06-25 | 1999-12-29 | Csl Silicones Inc. | One-part organopolysiloxane rubber composition for use as a corrosion protection coating on metals |
| CN1752165A (en) * | 2004-09-23 | 2006-03-29 | 张崇照 | Organic silicon transparent wear-proof hardened coating and mfg. process thereof |
| CN1847341A (en) * | 2006-03-30 | 2006-10-18 | 上海电力学院 | Prepn process of nanometer composite organic siloxane paint resisting corrosion of chlorine ion |
| CN1872918A (en) * | 2006-06-27 | 2006-12-06 | 上海大学 | Oleophilic modificatioon method for tiny inorganic Nano powder |
| CN101020800A (en) * | 2007-02-15 | 2007-08-22 | 中国科学院上海硅酸盐研究所 | Insulating composite paint of nanometer inorganic matter and polymer and its prepn |
| CN102827500A (en) * | 2012-07-16 | 2012-12-19 | 长兴（中国）投资有限公司 | Scratch-resistant and wear-resistant composition and preparation method and application thereof |
| CN104387960A (en) * | 2014-11-28 | 2015-03-04 | 苏州伊埃夫化学材料科技有限公司 | High-performance nano-composite structure coating and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 吴海 等: "纳米SiO2复合涂料的研究进展", 《材料导报》 * |
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