CN103602262A - Preparation method of high temperature-resistant diffuse-reflection coating for LED (Light-Emitting Diode) - Google Patents
Preparation method of high temperature-resistant diffuse-reflection coating for LED (Light-Emitting Diode) Download PDFInfo
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Abstract
The invention provides a preparation method of a high temperature-resistant diffuse-reflection coating for an LED (Light-Emitting Diode). The preparation method comprises the following steps of: (1) preparing the following raw materials by weight percent: 55-82% of high temperature-resistant organic silicon resin, 16-25% of titanium dioxide, 6-12% of nano diatomite powder, 6-12% of rare earth element oxide, 1.5-5% of dispersant, 0.5-1% of flatting agent, 0.5-1% of defoamer, 5-15% of light diffusant and 5-15% of mixed solvent; (2) blending and stirring; (3) crushing after cooling; (4) grinding; (5) dispersing until a mixture having corresponding fineness and viscosity is obtained, and forming the coating. The preparation method provided by the invention is simple in process, easy to implement, and high in production efficiency; a nano material is added, so that the heat dissipation effect is obviously improved; the rare earth element oxide is added to improve the activity of the coating composition; as a result, the coating composition is capable of working normally at high temperatures and good in diffusion reflection effect; the light reflected is soft and even and the utilization rate of the light energy is high; the luminance is greatly enhanced; the light source cost can be saved to a large extent; the power consumption of the product can be reduced.
Description
Technical field:
The present invention relates to a kind of coating material production field, be specially the preparation method of the high temperature resistant diffuse reflection coating that a kind of LED uses.
Background technology:
LED is solid cold light source of new generation, with its impayable energy-saving and environmental protection, long lifetime, controllability high-technology advantage, can be widely used in the fields such as various indications, demonstration, decoration, backlight, general lighting and urban landscape.China has issued national semiconductor lighting plan in 2003, and has write into national medium-term and long-term development in science and technology plan.LED semiconductor energy-saving lighting engineering will become one of main flow direction of following Lighting Industry.Along with the technology of LED semiconductor grain is in recent years constantly progressive, its function expands illumination to from showing, LED semi-conductor becomes the optimal selection of alternative conventional incandescent and luminescent lamp solid light source gradually, is one of main flow direction of following new light sources.
But LED electricity-saving lamp, due to itself, also has the following disadvantages:
(1) LED electricity-saving lamp is the same with ordinary incandescent lamp under alternating-current drives has stroboscopic phenomenon, and common energy-saving lamp does not have stroboscopic phenomenon.Stroboscopic can make eyes easily tired.
(2) light of each LED bulb is excessively bright, and meeting intense stimulus eyes, can not look at straight, even the short period of time, and common energy-saving lamp is relatively softer.
(3) irradiating angle is restricted, generally can only irradiate 120 °, and common energy-saving lamp almost can irradiate 360 °.
(4) brightness in irradiation room is outstanding unlike electricity-saving lamp, because LED only has high brightness in the narrow and small angle of direct-view, and after departing from this angle, light weakens rapidly.
For this reason, must adopt appropriate means to overcome above shortcoming, and carry out soft LED light by diffuse-reflectance coating, expand shadow surface, a kind of practicable method of can yet be regarded as.Chinese patent CN101126487 (A) discloses a kind of LED nano energy-saving environment-friendly road lamp, the surface of its nanometer reflection plate has photocatalyst coating, both solved the direct projection problem of LED lamp, the illumination that is conducive to again LED promotes photocatalyst reaction, can dustproof sterilizing, self keeps a public place clean, and purifies air, and plays the effect of environmental protection.Chinese patent CN1768231A discloses a kind of means of illumination, and its case has been equipped with diffuse-reflectance coating, and coating comprises a kind of water-based solvent and a kind of binding agent.
Existing diffuse reflection coating, visible ray diffuse-reflectance efficiency is low, and heat-resistant stable is poor, and in addition, for guaranteeing that coating has higher reflectivity, the content of reflectivity particle is generally higher, often causes the not good problem of coating and matrix adhesive force.Application at present comparatively successfully has the diffuse reflection coating 6080 of blue luxuriant and rich with fragrance optics, adopt baric sulphur formula, in visible wavelength region internal reflection rate value, can reach 95%, but this coating only can be used under the environment lower than 80 ℃, if higher than this temperature, this diffuse reflection coating is by the even roasting paste of obvious xanthochromia, the even no-reflection effect of reflectivity degradation.
Summary of the invention:
The object that the present invention will solve is to provide the preparation method of the high temperature resistant diffuse reflection coating that a kind of LED uses, to solve the problem in background technology.
Technical problem solved by the invention realizes by the following technical solutions:
The preparation method of the high temperature resistant diffuse reflection coating that LED uses, is characterized in that, comprises the following steps:
(1) preparing material: each component and the weight percent thereof of raw material are as follows:
High-temperature resistant organic silicon resin: 55～82%, titanium dioxide: 16～25%,
Nano diatomite powder: 6～12%, rare earth oxide: 6～12%,
Dispersion agent: 1.5～5%, flow agent: 0.5～1%,
Defoamer: 0.5～1%, light diffusing agent: 5～15%,
Butylacetate: 1～5%, mixed solvent: 5～15%;
(2) proportioning stirs: the part by weight by 5:1 dissolves high-temperature resistant organic silicon resin with mixed solvent at normal temperatures completely, then titanium dioxide, nano diatomite powder, rare earth oxide, the dispersion agent of corresponding proportional quantity in the high-temperature resistant organic silicon resin solution after dissolving and step (1) are dropped in reactor, start, stir and be slowly heated to 80 ℃ with steam, keep isothermal reaction 2 hours;
(3) cooling rear fragmentation: stirred solution in step (2) is carried out to underpressure distillation and slough mixed solvent wherein, underpressure distillation starts sampling and testing reactant fugitive constituent per hour after 3 hours, when fugitive constituent is less than 1%, while hot reactant is discarded to feed basin, question response thing is fully cooling obtains modified mixture by fragmentation;
(4) grind: mixture in step (3) is transferred to ball mill and grinds, with 300 eye mesh screens, filter macrobead mixture;
(5) disperse: the mixture grinding after screening in step (4) is transferred in high speed dispersor, and flow agent, defoamer, butylacetate and the light diffusing agent of corresponding weight proportion in step (1) are added and in high speed dispersor, carry out dispersing and mixing, until obtain the mixture of corresponding fineness and viscosity, make coating.
A kind of optimization as above technical scheme; Each component and the weight percent thereof of step (1) Raw are as follows:
High-temperature resistant organic silicon resin: 60～70%, titanium dioxide: 20～22%,
Nano diatomite powder: 8～10%, rare earth oxide: 9～10%,
Dispersion agent: 1.5～3%, flow agent: 0.5～0.8%,
Defoamer: 0.5～0.8%, light diffusing agent: 6～12%,
Butylacetate: 2～5%, mixed solvent: 8～10%.
A kind of optimization as above technical scheme: the particle size diameter of described rare earth oxide is 3～10 μ m.
A kind of optimization as above technical scheme: described high-temperature resistant organic silicon resin is for tolerating poly-alkyl organic resin, epoxy modified silicone resin or the fluorine silicon resin of 100～160 ℃ of high temperature.
A kind of optimization as above technical scheme: described mixed solvent is the mixing solutions of butylacetate and dimethylbenzene.
A kind of optimization as above technical scheme: detect fineness and the viscosity of mixture in step (5) with Hegman grind gage, when the fineness of mixture reaches 20 μ m, viscosity 20～26s, make coating.
Beneficial effect of the present invention: preparation method's technique provided by the invention is simple and easy, be easy to realize, production efficiency is high; Coating has better mechanical property and sticking power, can be coated with and be contained on all kinds of LED light fixtures, adds nano material, significantly improving radiating effect; Add rare earth oxide, improve the activity of coating composition, under high-temperature condition, work, diffuse effect is good, and light is soft, and evenly the efficiency of light energy utilization is high, greatly strengthens luminance brightness, can save largely the power consumption of light source cost and reduction product.
Embodiment:
In order to make technique means of the present invention, creation characteristic, workflow, using method reach object and effect is easy to understand, below in conjunction with specific embodiment, further set forth the present invention.
Embodiment 1
The preparation method of the high temperature resistant diffuse reflection coating that LED uses, comprises the following steps:
(1) preparing material: each component and the weight percent thereof of raw material are as follows: high-temperature resistant organic silicon resin: 55%, titanium dioxide: 16%, nano diatomite powder: 6%, rare earth oxide: 6%, dispersion agent: 1.5%, flow agent: 0.5%, defoamer: 0.5%, light diffusing agent: 5%, butylacetate: 1%, the mixed solvent of butylacetate and dimethylbenzene: 5%;
(2) by the part by weight of 5:1, high-temperature resistant organic silicon resin is dissolved completely with mixed solvent at normal temperatures, then titanium dioxide, nano diatomite powder, rare earth oxide, the dispersion agent of corresponding proportional quantity in the high-temperature resistant organic silicon resin solution after dissolving and step (1) are dropped in reactor, start, stir and be slowly heated to 80 ℃ with steam, keep isothermal reaction 2 hours;
(3) cooling rear fragmentation: pyrosol in step (2) is carried out to underpressure distillation and slough butylacetate and dimethylbenzene mixed solvent wherein, underpressure distillation starts sampling and testing reactant fugitive constituent per hour after 3 hours, when fugitive constituent is less than 1%, while hot reactant is discarded to feed basin, question response thing is fully cooling obtains modified mixture by fragmentation;
(4) grind: mixture in step (3) is transferred to ball mill and grinds, with 300 eye mesh screens, filter macrobead mixture;
(5) disperse: the mixture grinding after screening in step (4) is transferred in high speed dispersor, and flow agent, defoamer, butylacetate and the light diffusing agent of corresponding weight proportion in step (1) are added and in high speed dispersor, carry out dispersing and mixing, with Hegman grind gage, detect during this time fineness and the viscosity of mixture, when the fineness of mixture reaches 20 μ m, viscosity 26s, make coating.
Embodiment 2
The preparation method of the high temperature resistant diffuse reflection coating that LED uses, comprises the following steps:
(1) preparing material: each component and the weight percent thereof of raw material are as follows: high-temperature resistant organic silicon resin: 82%, titanium dioxide: 25%, nano diatomite powder: 12%, rare earth oxide: 12%, dispersion agent: 5%, flow agent: 1%, defoamer: 1%, light diffusing agent: 15%, butylacetate: 5%, butylacetate and dimethylbenzene mixed solvent: 15%;
(2) by the part by weight of 5:1, high-temperature resistant organic silicon resin is dissolved completely with mixed solvent at normal temperatures, then titanium dioxide, nano diatomite powder, rare earth oxide, the dispersion agent of corresponding proportional quantity in the high-temperature resistant organic silicon resin solution after dissolving and step (1) are dropped in reactor, start, stir and be slowly heated to 80 ℃ with steam, keep isothermal reaction 2 hours;
(3) cooling rear fragmentation: pyrosol in step (2) is carried out to underpressure distillation and slough butylacetate and dimethylbenzene mixed solvent wherein, underpressure distillation starts sampling and testing reactant fugitive constituent per hour after 3 hours, when fugitive constituent is less than 1%, while hot reactant is discarded to feed basin, question response thing is fully cooling obtains modified mixture by fragmentation;
(4) grind: mixture in step (3) is transferred to ball mill and grinds, then with 300 eye mesh screens, filter macrobead mixture;
(5) disperse: the mixture grinding after screening in step (4) is transferred in high speed dispersor, and flow agent, defoamer, butylacetate and the light diffusing agent of corresponding weight proportion in step (1) are added and in high speed dispersor, carry out dispersing and mixing, with Hegman grind gage, detect during this time fineness and the viscosity of mixture, when the fineness of mixture reaches 20 μ m, viscosity 20s, make coating.
Embodiment 3
The preparation method of the high temperature resistant diffuse reflection coating that LED uses, comprises the following steps:
(1) preparing material: each component and the weight percent thereof of raw material are as follows: high-temperature resistant organic silicon resin: 69%, titanium dioxide: 20%, nano diatomite powder: 9%, rare earth oxide: 9%, dispersion agent: 3%, flow agent: 0.8%, defoamer: 0.8%, light diffusing agent: 10%, butylacetate: 3%, butylacetate and dimethylbenzene mixed solvent: 10%;
(2) by the part by weight of 5:1, high-temperature resistant organic silicon resin is dissolved completely with mixed solvent at normal temperatures, then titanium dioxide, nano diatomite powder, rare earth oxide, the dispersion agent of corresponding proportional quantity in the high-temperature resistant organic silicon resin solution after dissolving and step (1) are dropped in reactor, start, stir and be slowly heated to 80 ℃ with steam, keep isothermal reaction 2 hours;
(3) cooling rear fragmentation: pyrosol in step (2) is carried out to underpressure distillation and slough butylacetate and dimethylbenzene mixed solvent wherein, underpressure distillation starts sampling and testing reactant fugitive constituent per hour after 3 hours, when fugitive constituent is less than 1%, while hot reactant is discarded to feed basin, question response thing is fully cooling obtains modified mixture by fragmentation;
(4) grind: mixture in step (3) is transferred to ball mill and grinds, then with 300 eye mesh screens, filter macrobead mixture;
(5) disperse: the mixture grinding after screening in step (4) is transferred in high speed dispersor, and flow agent, defoamer, butylacetate and the light diffusing agent of corresponding weight proportion in step (1) are added and in high speed dispersor, carry out dispersing and mixing, with Hegman grind gage, detect during this time fineness and the viscosity of mixture, when the fineness of mixture reaches 20 μ m, viscosity 24s, make coating.
Above-mentioned high-temperature resistant organic silicon resin is for tolerating poly-alkyl organic resin, epoxy modified silicone resin or the fluorine silicon resin of 100～160 ℃ of high temperature and the particle size diameter of the rare earth oxide that uses is 3～10 μ m.
The product that comparative example 1, embodiment 2 and embodiment 3 obtain, the coating that wherein embodiment 3 makes in use, good heat dissipation effect; Under high-temperature condition, work, diffuse effect is good, and light is soft evenly, and the efficiency of light energy utilization is high, greatly strengthens luminance brightness.Coating can be worked at 100 ℃ and above temperature, and be difficult for xanthochromia and aging occurs, can not crack, reflectivity can reach more than 96%.Utilize titanium dioxide to the random diffuse-reflectance of light, make through light transmition direction there is irregular change, be equivalent to numerous secondary light source, make light become soft evenly, luminous energy is not suffered a loss substantially, greatly improves the light output efficiency of LED light fixture.
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification sheets, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (6)
- The preparation method of the high temperature resistant diffuse reflection coating that 1.LED uses, is characterized in that, comprises the following steps:(1) preparing material: each component and the weight percent thereof of raw material are as follows:High-temperature resistant organic silicon resin: 55～82%, titanium dioxide: 16～25%,Nano diatomite powder: 6～12%, rare earth oxide: 6～12%,Dispersion agent: 1.5～5%, flow agent: 0.5～1%,Defoamer: 0.5～1%, light diffusing agent: 5～15%,Butylacetate: 1～5%, mixed solvent: 5～15%;(2) proportioning stirs: the part by weight by 5:1 dissolves high-temperature resistant organic silicon resin with mixed solvent at normal temperatures completely, then titanium dioxide, nano diatomite powder, rare earth oxide, the dispersion agent of corresponding proportional quantity in the high-temperature resistant organic silicon resin solution after dissolving and step (1) are dropped in reactor, start, stir and be slowly heated to 80 ℃ with steam, keep isothermal reaction 2 hours;(3) cooling rear fragmentation: stirred solution in step (2) is carried out to underpressure distillation and slough mixed solvent wherein, underpressure distillation starts sampling and testing reactant fugitive constituent per hour after 3 hours, when fugitive constituent is less than 1%, while hot reactant is discarded to feed basin, question response thing is fully cooling obtains modified mixture by fragmentation;(4) grind: mixture in step (3) is transferred to ball mill and grinds, with 300 eye mesh screens, filter macrobead mixture;(5) disperse: the mixture grinding after screening in step (4) is transferred in high speed dispersor, and flow agent, defoamer, butylacetate and the light diffusing agent of corresponding weight proportion in step (1) are added and in high speed dispersor, carry out dispersing and mixing, until obtain the mixture of corresponding fineness and viscosity, make coating.
- 2. the preparation method of the high temperature resistant diffuse reflection coating that LED according to claim 1 uses, is characterized in that: each component and the weight percent thereof of step (1) Raw are as follows:High-temperature resistant organic silicon resin: 60～70%, titanium dioxide: 20～22%,Nano diatomite powder: 8～10%, rare earth oxide: 9～10%,Dispersion agent: 1.5～3%, flow agent: 0.5～0.8%,Defoamer 0.5～0.8%, light diffusing agent 6～12%,Butylacetate: 2～5%, mixed solvent: 8～10%.
- 3. the preparation method of the high temperature resistant diffuse reflection coating that LED according to claim 1 and 2 uses, is characterized in that: the particle size diameter of described rare earth oxide is 3～10 μ m.
- 4. the preparation method of the high temperature resistant diffuse reflection coating that LED according to claim 1 and 2 uses, is characterized in that: described high-temperature resistant organic silicon resin is for tolerating poly-alkyl organic resin, epoxy modified silicone resin or the fluorine silicon resin of 160～200 ℃ of high temperature.
- 5. the preparation method of the high temperature resistant diffuse reflection coating that LED according to claim 1 and 2 uses,It is characterized in that: described mixed solvent is the mixing solutions of butylacetate and dimethylbenzene.
- 6. the preparation method of the high temperature resistant diffuse reflection coating that LED according to claim 1 uses, it is characterized in that: fineness and viscosity with Hegman grind gage detection mixture in step (5), when the fineness of mixture reaches 20 μ m, viscosity 20～26s, make coating.
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| CN105838188A (en) * | 2016-04-28 | 2016-08-10 | 江苏金源腾峰换热设备有限公司 | Treating process of high-temperature-resistant tubular product for waste-heat utilization device |
| CN113437196A (en) * | 2021-06-24 | 2021-09-24 | 深圳市华皓伟业光电有限公司 | SMD packaging and forming method with large divergence angle |
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Application publication date: 20140226 |