CN108300029A - A kind of aqueous LED light diffusion coating and preparation method thereof - Google Patents
A kind of aqueous LED light diffusion coating and preparation method thereof Download PDFInfo
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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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
- C09D163/10—Epoxy resins modified by unsaturated compounds
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
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- 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
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- 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
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- 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
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Abstract
The invention discloses a kind of novel aqueous LED lights to spread coating and preparation method thereof, belongs to technical field of coatings.It is characterized in that being made of the following components of mass percentage：40 70% pure water 30 60% of water-based acrylic resin, light diffusing agent 0.1 1.0%, dispersant 0.1 1.5%, antifoaming agent 0.05 1.5%, levelling agent 0.05 1.0%, the sum of weight fraction of above each substance are 100%.The present invention is with melamino-formaldehyde（Melamine）Resin microsphere is light diffusing agent, and can first be mixed to get lotion with auxiliary agents such as antifoaming agent without drying, then with matrix resin compatibility.The light transmittance and mist degree of the present invention not only aqueous LED light diffusion coating of effective coordination, while simplifying process route and obtaining defoaming agent emulsion, improve the defoaming effect and bin stability of coating.A kind of novel aqueous LED light diffusion coating of the present invention and preparation method, light source is soft, has higher light diffusing and a translucency, and simple process, at low cost.
Description
Technical field
The invention belongs to technical field of coatings, and in particular to a kind of aqueous LED light diffusion coating and preparation method thereof.
Background technology
In recent years, the market prospects of LED illumination lamp are very wide, and lamp outer casing material also gradually can be good by light diffusing
Good plastics are instead of aluminum alloy materials, and it is even more to have light transmittance high, resistance to old to use the glass material shell of light diffusion coating
Good, the at low cost advantage of the property changed, the market demand are huge.Aqueous LED light diffusion coating is nearly 2 years emerging ep-type materials, it
It is mainly formed by the way that light diffusing agent and other additive compatibilities are added in water-base resin matrix, by light diffusing agent by point light source
It is converted into area source, light is made to form diffusing reflection and reach even light effect, effectively solves LED light glare problem.
Most common aqueous LED light diffusion coating is that inorganic light diffusion is added in acrylic resin systems currently on the market
Agent or nano-particle.Document [Chinese electric lighting, 2014 (12)] points out, emulsion acrylic resin rate of drying is fast, hardness
High, at low cost, weatherability（Burning point is not easy to change）Good, for being avoided when LED lamplight diffusion coating, film forming is poor, gloss
Low, the shortcomings of solvent resistant and heat are glutinous cold short, be current optimal smooth diffusion coating film forming agent.But corresponding nothing
Machine light diffusing agent but free settling, less effective in use, and the light transmittance of aqueous LED light diffusion coating can be caused anxious
It falls sharply low（Transmission loss 40%-60%）, seriously affect using effect.Though nano-particle is protected because grain size is less than visible wavelength
Demonstrate,prove high transparency, but it is not fairly obvious and need to consider cost factor to solving light diffusing effect, using limited.Specially
104017448 A of sharp CN use nano aluminium oxide and nano-calcium carbonate as light diffusing agent, and dosage is very big（Total 20%-40%）, light transmission
Rate is in 80%-85%, and mist degree is slightly below light transmittance.Light transmittance is the important indicator for weighing the LED light transparency with mist degree, and light expands
While the excellent key criterion of powder is efficiently to play light diffusion, reduce caused light fall-off as far as possible.Obviously,
Inorganic light diffusing agent and nano-particle are 2 points above without meeting well.104629564 A of patent CN are not carried in formula
To light diffusing agent is added, it can be seen that only titanium dioxide, talcum powder etc. dye filler, but the light transmittance of titanium dioxide is very low, sliding
Mountain flour still plays the role of light diffusing agent, and the light which finally obtains spreads coating light transmittance 90% or more, does not refer to but
Haze issues, it is as a result more difficult.
Organic light diffusing agent is other a kind of common light diffusing agent, mainly there is following two side compared with other light diffusing agents
Face advantage：（1）The refractive index of organic light diffusing agent and base material has differences, and light can get splendid mist degree through repeatedly refraction,
It avoids multiple reflections and generates self-absorption, to obtain higher light transmittance.（2）Organic resin particles have very strong be charged by friction
Characteristic can be uniformly adhered to other powder particle surfaces when dry-mixed, more preferable with the compatibility of the organic resin as film forming agent,
It is more easily dispersed in water-base resin.Traditional organic light diffusing agent includes mainly polymethyl methacrylate（PMMA）, polyphenyl
Ethylene（PS）, organic siliconresin and acrylic resin etc..Light diffusing agent is to make light refraction using refractive index difference and obtain
Ideal mist degree, but PMMA（Including acrylic resin）The refraction of coating acrylic resin matrix is spread with aqueous LED light
Rate is extremely close, therefore light diffusion effect is very undesirable.Organic siliconresin itself is lipophilic resin, with water-based acrylic resin
Compatibility is poor；The manufacturing cost of traditional polystyrene light diffusion microballoon is higher, and industrial applications are restricted.In summary
Consider, generally avoids using traditional organic light diffusing agent in the aqueous LED light diffusion coating based on acrylic resin systems.
Melamine resin has different structure of functional groups features, refringence anisotropic from acrylic resin matrix
It is larger, it can effectively ensure that the light diffusing of aqueous LED light diffusion coating.Melamine resin is because containing hydrophilic groups such as amino
It rolls into a ball and has stronger compatibility with acrylic resin, to ensure that coating has preferable bonding force, avoid the occurrence of inorganic light and expand
The problems such as powder free settling, bad dispersibility.Comprehensive analysis, melamine resin can ensure acrylic resin-based aqueous
LED light diffusion coating has good translucency and compared with haze simultaneously.
The present invention is not in tune for traditional acrylic resin-based aqueous LED light diffusion coating light transmittance and mist degree, no
The problem of capable of obtaining being effectively ensured simultaneously, is based on the unique physicochemical property of melamine resin, proposes with melamine first
Urea formaldehyde microballoon is light diffusing agent, prepares a kind of novel aqueous LED light diffusion coating.The novel aqueous LED light diffusion coating can
The light transmittance and mist degree of coating are spread with the aqueous LED light of effective coordination, light source is soft, and service life is long, at low cost.
Invention content
The purpose of the invention is to provide a kind of aqueous LED light diffusion coating and preparation method, solves traditional LED light and expand
The problems such as coating light transmission rate is low, and light diffusing is poor is dissipated, light source is uniform, soft, full, photopermeability, light scattering good, makes
Use long lifespan.
Technical solution：A kind of aqueous LED light diffusion coating, is made of the following components of mass percentage：
Water-based acrylic resin 40-70%
Pure water 30-60%
Light diffusing agent 0.1-1.0%
Dispersant 0.1-1.5%
Antifoaming agent 0.05-1.5%
Levelling agent 0.05-1.0%
The sum of the weight fraction of above each substance is 100%.
The aqueous light diffusion coating appearance is semi-transparent aqueous solution, and light transmittance is 80-95%, mist degree 80-90% after solidification.
Further, the water-based acrylic resin is methacrylic resin, epoxy modified acrylic resin and poly- ammonia
One or more of ester acrylic resin.
Further, the light diffusing agent is melamine resin microballoon（Also known as " melamine resin "）, average grain diameter
It is 1-30 μm, preferably 5-20 μm, and needs not move through drying process（It can be injected with hygrometric state）.Melamine resin light expands
The anisotropic big and compatibility of refringence of powder and acrylic resin matrix is good, can ensure that gained LED light spreads aqueous painting
Expect while there is higher translucency and mist degree.
Further, the dispersant be polyphosphoric acid salt, polyacrylate and one kind in stearic amide class or
It is several；Specially sodium polyphosphate, Diisobutylene maleic acid sodium salt, acrylic copolymer ammonium salt, polycarboxylate sodium or
One or more of stearic amide.
Further, the antifoaming agent is organic silicon defoamer, and specially polyether-modified dimethyl silicone polymer gathers
Silicone-polyether copolymer（Containing aerosil）, organic-silicon-modified polysiloxane emulsion（Containing aerosil）, poly- silicon
Oxygen alkane copolyether（Containing hydrophobic silica）, polyetherpolysilicone（BYK-019）, polymer and polysiloxanes complex
（BYK-024）One or more of with organic-silicon-modified siloxanes.In order to improve mixing of the antifoaming agent in water paint, fill
Code insurance demonstrate,proves defoaming effect, and antifoaming agent need to be usually made to lotion, and the melamine resin microballoon of hygrometric state just to disappear
Infusion is lotion, reduces process.
Further, the levelling agent is modified organic silicon type levelling agent or modified organic silicon type levelling agent and propylene
The complex of acid type levelling agent, the two quality parts ratio are 1：（0.5-3.0）.Modified organic silicon type levelling agent is polysiloxanes-
Copolyether（EL-2519）, polyether-modified dimethyl silicone polymer solution（EL-2801）Or one kind in levelling agent 3018 or
Several, acrylic type levelling agent is fluorocarbon acrylic acid or polyacrylic acid ester compounds（EL-2820）Complex.
The present invention also provides the preparation methods that a kind of aqueous LED light spreads coating, include the following steps：
1）The preparation of melamine resin microballoon：Melamine and formaldehyde are 1 according to molar feed ratio：（2.5-3.5）, use
Conventional method prepares melamine resin microballoon；
2）Auxiliary agent mutually mixes：Hygrometric state melamine resin microballoon is obtained by conventional method, without being dried, sampling measures solid
Body content, by the proportioning that dry state melamine resin microspheres quality score is 0.1-1.0%, with dispersant, antifoaming agent, stream
Flat agent mixing is mixed into the uniform emulsion system of distribution by hygrometric state melamine resin microballoon；The trimerization being prepared
Cyanamide formaldehyde resin（MF）Microballoon does not need drying, and directly and acrylic resin matrix is added in auxiliary agent after mixing.It examines
The content for considering MF in formula is the content of dry MF, so needing the solid content of measurement hygrometric state MF, ensures that MF contents reach
Dry state ratio in formula.
3）It is mixed with matrix：Uniformly mixed lotion is added in water-based acrylic resin, pure water is added, is utilized
Ultrasonic disperse or heating stirring method make it be sufficiently mixed.
The aqueous LED light diffusion coating of the present invention can also be applied in coating film field in LED light.
The water-soluble light that the present invention is prepared spreads coating, is characterized with the method for science.With light transmittance/mist degree analyzer
Light transmittance is 80-95%, mist degree 80-90% after measuring solidification.
A kind of novel aqueous LED light diffusion coating of the present invention and preparation method, the described aqueous LED light diffusion coating are main
For fields such as coating films in LED light.
Advantageous effect：A kind of novel aqueous LED light diffusion coating of the present invention and preparation method, have the following advantages：
（1）Using melamine resin microballoon as light diffusing agent, gained water is effectively ensured in the case where dosage is less
Property LED light diffusion coating simultaneously there is very high light transmittance and mist degree；
（2）Using hygrometric state melamine resin microballoon injection technique, it is first mixed to get lotion with auxiliary agents such as antifoaming agent, then with
Matrix resin compatibility is simplifying process route, while reducing thermal energy consumption and resources costs, obtains defoaming agent emulsion, improves
The defoaming effect and bin stability of coating.
Specific implementation mode
In order to better illustrate the present invention, attached embodiment is as follows.It is emphasized that embodiment is not meant to the present invention's
For scope limitation in the condition that embodiment describes, the purpose of embodiment is the content and its feasibility that the present invention is further explained.
A kind of preparation method of novel aqueous LED light diffusion coating is as follows：
Melamine and formaldehyde are 1 according to molar feed ratio：（2.5-3.5）, melamine resin is prepared with conventional method
Microballoon；Without being dried, sampling measures solid content, and conversion obtains dry state melamine resin microspheres quality score and matches
Than being mixed with dispersant, antifoaming agent, the uniform emulsion system of distribution being mixed by hygrometric state melamine resin microballoon；
Uniformly mixed lotion is added in water-based acrylic resin, pure water is added, utilizes the side such as ultrasonic disperse, heating stirring
Method makes it be sufficiently mixed.
Following embodiment is prepared according to the method described above.
Dispensing is carried out according to the quality proportioning in following embodiment and prepare a kind of novel aqueous LED of the present invention respectively
Light spreads coating.
Embodiment 1：
60 g of methacrylic resin
37.5 g of pure water
0.5 g of melamine resin microballoon
1.0 g of Diisobutylene maleic acid sodium salt
Polysiloxane polyether copolymer（Containing aerosil） 0.5 g
0.2 g of polysiloxane-polyether copolymer
0.5 g of polyacrylic acid ester compounds
Embodiment 2：
40 g of epoxy modified acrylic resin
58 g of pure water
0.5 g of melamine resin microballoon
0.5 g of sodium polyphosphate
0.55 g of acrylic copolymer ammonium salt
Polysiloxane polyether copolymer（Containing hydrophobic silica） 0.5 g
3,018 0.15 g of levelling agent
0.3 g of polyacrylic acid ester compounds
Embodiment 3：
50 g of polyurethane acrylic resin
47 g of pure water
0.2 g of melamine resin microballoon
0.8 g of sodium polyphosphate
BYK-019 0.6 g
BYK-024 0.4 g
3,018 0.3 g of levelling agent
0.7 g of fluorocarbon acrylic acid levelling agent
Embodiment 4：
70 g of acrylic resin
26.5 g of pure water
0.7 g of melamine resin microballoon
0.8 g of stearic amide
1.3 g of organic-silicon-modified polysiloxane emulsion
0.1 g of polysiloxane-polyether copolymer
Polyether-modified 0.1 g of dimethyl silicone polymer solution
0.7 g of fluorine-carbon modified acrylate
Embodiment 5：
30 g of polyurethane acrylic resin
30 g of epoxy modified acrylic resin
38.2 g of pure water
0.6 g of melamine resin microballoon
1.0 g of polycarboxylate sodium
0.2 g of organic-silicon-modified siloxanes
0.6 g of polysiloxane-polyether copolymer
By being detected characterization to each embodiment sample, it is as shown in the table to obtain performance data：
The result shows that：The aqueous LED light diffusion coating of gained of the invention has higher light transmittance and mist degree, can ensure efficient
Light fall-off caused by reducing while playing light diffusion, has certain market popularization value.
Claims (9)
1. a kind of aqueous LED light spreads coating, which is characterized in that be made of the following components of mass percentage：
Water-based acrylic resin 40-70%
Pure water 30-60%
Light diffusing agent 0.1-1.0%
Dispersant 0.1-1.5%
Antifoaming agent 0.05-1.5%
Levelling agent 0.05-1.0%
The sum of the weight fraction of above each substance is 100%.
2. spreading coating according to a kind of aqueous LED light described in claim 1, which is characterized in that the aqueous light spreads coating
Appearance is semi-transparent aqueous solution, and light transmittance is 80-95%, mist degree 80-90% after solidification.
3. spreading coating according to a kind of aqueous LED light described in claim 1, which is characterized in that the water soluble acrylic acid tree
Fat is one or more of methacrylic resin, epoxy modified acrylic resin and polyurethane acrylic resin.
4. spreading coating according to a kind of aqueous LED light described in claim 1, which is characterized in that the light diffusing agent is three
Melamine-formaldehyde resin microsphere, average grain diameter are 1-30 μm.
5. a kind of aqueous LED light according to claim 6 spreads coating, which is characterized in that the melamino-formaldehyde
Resin microsphere average grain diameter is 5-20 μm.
6. spreading coating according to a kind of aqueous LED light described in claim 1, which is characterized in that the dispersant is poly- phosphorus
One or more of Barbiturates, polyacrylate and stearic amide class.
7. spreading coating according to a kind of aqueous LED light described in claim 1, which is characterized in that the antifoaming agent is to have
Machine silicon defoaming agent.
8. spreading coating according to a kind of aqueous LED light described in claim 1, which is characterized in that the levelling agent is to change
The mixture of property organic silicon type levelling agent or modified organic silicon type levelling agent and acrylic type levelling agent, the two quality parts ratio
It is 1：（0.5-3.0）.
9. a kind of preparation method of novel aqueous LED light diffusion coating, which is characterized in that include the following steps：
1）The preparation of melamine resin microballoon：Melamine and formaldehyde are 1 according to molar feed ratio：（2.5-3.5）, use
Conventional method prepares melamine resin microballoon；
2）Auxiliary agent mutually mixes：Hygrometric state melamine resin microballoon is obtained by conventional method, without being dried, sampling measures solid
Body content, by the proportioning that dry state melamine resin microspheres quality score is 0.1-1.0%, with dispersant, antifoaming agent, stream
Flat agent mixing is mixed into the uniform emulsion system of distribution by hygrometric state melamine resin microballoon；
3）It is mixed with matrix：Uniformly mixed lotion is added in water-based acrylic resin, pure water is added, utilizes ultrasound
Dispersion or heating stirring method make it be sufficiently mixed.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108219650A (en) * | 2018-01-25 | 2018-06-29 | 华南协同创新研究院 | A kind of environmental protection light diffusion coating and preparation method thereof |
| CN109401502A (en) * | 2018-11-14 | 2019-03-01 | 华南协同创新研究院 | A kind of aqueous light diffusion coating and preparation method thereof |
| CN109749546A (en) * | 2019-02-18 | 2019-05-14 | 福建贝思科电子材料股份有限公司 | A kind of high photosynthetic efficiency diffusion coating and its preparation method and application |
| CN111349368A (en) * | 2019-12-31 | 2020-06-30 | 浙江金陵光源电器有限公司 | High-adhesion light diffusion coating for LED lamp tube and preparation method |
| CN115403964A (en) * | 2022-08-11 | 2022-11-29 | 佛山市三水灏诚合成树脂有限公司 | Water-based LED light diffusion coating, preparation method thereof and LED lamp |
| CN115433509A (en) * | 2022-09-27 | 2022-12-06 | 浙江福莱新材料股份有限公司 | Water-based light diffusion coating and preparation method thereof |
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| CN105802398A (en) * | 2016-03-15 | 2016-07-27 | 盘锦凯米特新材料有限公司 | Environment-friendly water-based photodiffusion coating and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108219650A (en) * | 2018-01-25 | 2018-06-29 | 华南协同创新研究院 | A kind of environmental protection light diffusion coating and preparation method thereof |
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| CN109401502A (en) * | 2018-11-14 | 2019-03-01 | 华南协同创新研究院 | A kind of aqueous light diffusion coating and preparation method thereof |
| CN109749546A (en) * | 2019-02-18 | 2019-05-14 | 福建贝思科电子材料股份有限公司 | A kind of high photosynthetic efficiency diffusion coating and its preparation method and application |
| CN111349368A (en) * | 2019-12-31 | 2020-06-30 | 浙江金陵光源电器有限公司 | High-adhesion light diffusion coating for LED lamp tube and preparation method |
| CN115403964A (en) * | 2022-08-11 | 2022-11-29 | 佛山市三水灏诚合成树脂有限公司 | Water-based LED light diffusion coating, preparation method thereof and LED lamp |
| CN115403964B (en) * | 2022-08-11 | 2023-10-27 | 佛山市三水灏诚合成树脂有限公司 | Water-based LED light diffusion coating, preparation method thereof and LED lamp |
| CN115433509A (en) * | 2022-09-27 | 2022-12-06 | 浙江福莱新材料股份有限公司 | Water-based light diffusion coating and preparation method thereof |
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