CN109735235A - A kind of thermally conductive high refractive index LED transparent epoxy resin casting glue and preparation method thereof - Google Patents
A kind of thermally conductive high refractive index LED transparent epoxy resin casting glue and preparation method thereof Download PDFInfo
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- CN109735235A CN109735235A CN201910011581.1A CN201910011581A CN109735235A CN 109735235 A CN109735235 A CN 109735235A CN 201910011581 A CN201910011581 A CN 201910011581A CN 109735235 A CN109735235 A CN 109735235A
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Abstract
The invention discloses a kind of thermally conductive high refractive index LED transparent epoxy resin casting glues, it is made of component one and component two: the parts by weight proportion of one raw material of component are as follows: 70~80 parts of epoxy resin, 10~20 parts of bleached shellac resin, 7~10 parts of polyvinyl alcohol, 5~10 parts of beeswax liquid, 0.5~1 part of tertiary sodium phosphate, 5~10 parts of dodecafluoroheptyl methacrylate, 15~40 parts of refractive index modifying filler, 5~10 parts of phenyl glycidyl ether, the parts by weight of two raw material of component match are as follows: 8~12 parts of aliphatic polyamine, 1~2 part of DMP-30, the present invention discloses a kind of preparation methods of thermally conductive high refractive index LED transparent epoxy resin casting glue.A kind of thermally conductive high refractive index LED transparent epoxy resin casting glue of the invention has high refractive index and high thermal conductivity on the basis of translucidus is good, while anti-aging cracking performance is preferable.
Description
Technical field
The present invention relates to adhesive and preparation technical fields, and in particular to a kind of thermally conductive high refractive index LED transparent epoxy tree
Rouge casting glue and preparation method thereof.
Background technique
Casting glue, for the bonding of electronic component, encapsulating, sealing and coating protection.Casting glue belongs to before uncured
With the liquid of mobility, glue viscosity is according to the material of product, performance, the difference of production technology and different from.Encapsulating
Its use value can be achieved in glue after being fully cured, can be played after solidification it is waterproof and dampproof, insulation, it is dust-proof, thermally conductive, secrecy, it is resistance to
Temperature, anticorrosion, it is shockproof the effects of, be widely used for electronic device manufacturing industry at present, be that electronics industry is indispensable important
Rapidoprint.
The referred to as LED of forth generation light source have energy-saving and environmental protection, safety, low-power consumption, low-heat, light beam concentration, high brightness,
The features such as easy maintenance, can be widely applied to the fields such as various instructions, decoration, display, backlight, general lighting.It mentions at present
The luminous efficiency of high LED is still a key technical problem, and the materials such as casting glue shine to product in LED production process
Efficiency and service life have significant impact, it is desirable that the materials such as casting glue have high transparency, Gao Zheguang, high bond strength, resistance to
The performances such as light, heat ageing.Currently used casting glue mainly has epoxy resin embedding adhesive, organic siliconresin casting glue, polyurethane
Casting glue, wherein epoxy resin embedding adhesive is because having the good transparency, mechanical property and caking property, be widely used in LED,
The bonding of integrated circuit board, encapsulating, encapsulation, but since epoxy resin-matrix casting glue is easy to aging under high temperature, high radiation condition, opens
It splits, and the refractive index of epoxy resin-matrix casting glue is lower, limits its application as LED casting glue to a certain extent.
With the development of electronic product multifunction and lightness, electronic product has accumulated more and more in a limited space
Electronic device, this requires encapsulating material heat conductivity with higher and preferable heat resistances, for epoxy resin-matrix
For casting glue, heat-conductive characteristic is lower, and the raising of thermal conductivity need add heat filling, and the addition of heat filling is easily made
At the reduction of encapsulating adhesiveness, light transmittance, therefore the selection of heat filling and the proportion of casting glue raw material are to improve casting glue folding
Penetrating rate and comprehensive service performance becomes the research emphasis of thermally conductive LED casting glue.
Summary of the invention
In view of the shortcomings of the prior art, the present invention provides a kind of by lac resin, refractive index modifying filler modified height
Refractive index, LED transparent epoxy resin casting glue of high thermal conductivity and preparation method thereof.
The present invention solves the technical solution that above-mentioned technical problem uses are as follows: a kind of thermally conductive high refractive index LED transparent epoxy tree
Rouge casting glue is made of component one and component two:
The constitutive material of the component one are as follows: epoxy resin, bleached shellac resin, polyvinyl alcohol, beeswax liquid, tricresyl phosphate
Sodium, dodecafluoroheptyl methacrylate, refractive index modifying filler, phenyl glycidyl ether, the constitutive material of the component two
Are as follows: aliphatic polyamine and DMP-30；The aliphatic polyamine can be derived from can activity it is biggish, ring can be made in room temperature
The amine of oxygen resin crosslinking curing, such as ethylenediamine, hexamethylene diamine, diethylenetriamine, diethylaminopropylamine, triethylene tetramine.
The parts by weight of the component one match are as follows: 70~80 parts of epoxy resin, gathers 10~20 parts of bleached shellac resin
7~10 parts of vinyl alcohol, 5~10 parts of beeswax liquid, 0.5~1 part of tertiary sodium phosphate, 5~10 parts of dodecafluoroheptyl methacrylate, refraction
15~40 parts of rate modified filler, 5~10 parts of phenyl glycidyl ether, the parts by weight proportion of the component two are as follows: aliphatic
8~12 parts of polyamine, DMP-301~2 part.
Further, the refractive index modifying filler is modified gas phase titanic oxide and modified gas phase aluminum oxide
The mass parts ratio of mixture, the modified gas phase titanic oxide and modified gas phase aluminum oxide is 2~4:1.
Further, the modified gas phase titanic oxide the preparation method comprises the following steps: the gas phase titanium dioxide that will be dried
Titanium and gas phase aluminum oxide are placed in the NaOH solution that concentration is 10mol/L, are heated with stirring to 60 DEG C, are added under insulated and stirred
The epoxychloropropane solution for being 5:1 with gas phase titanium dioxide mass ratio, heat preservation return stirring react 4h, then use methanol, pure water
Cleaning product obtains modified gas phase titanic oxide, modified gas phase titanium dioxide after being 7,100 DEG C of vacuum dryings to pH repeatedly
With nonpolar substrates dissolve each other or favorable dispersibility, be not in clustering phenomena and influence be blended after composite material performance.
Further, the modification gas phase aluminum oxide the preparation method comprises the following steps: using ethanol solution, be incorporated as
The silane coupling agent KH560 of gas phase aluminum oxide quality 3%, second acid for adjusting pH are 6, are ultrasonically treated 1h, then will obtain
Mixed liquor is added to three-necked flask, and 4h is stirred at reflux at 75 DEG C, filters, and dehydrated alcohol is washed 2 times, and vacuum drying oven is dry, will
To solid content be fully ground to obtain modified gas phase aluminum oxide, modified gas phase aluminum oxide and nonpolar substrates
It dissolves each other or dispersibility is also relatively good, be not in clustering phenomena and influence the performance of composite material after being blended.
A kind of preparation method of the thermally conductive high refractive index LED transparent epoxy resin casting glue, comprising the following steps:
(1) bleached shellac resin and tertiary sodium phosphate are mixed and heated to 80~90 DEG C, insulated and stirred is uniform；
(2) it is added after beeswax liquid being heated to 80~90 DEG C to step (1) and obtains in lac resin liquid, and insulated and stirred
Then 0.5~1h is cooled to 50~60 DEG C to uniform；
(3) epoxy resin, polyvinyl alcohol, refractive index modifying filler, dodecafluoroheptyl methacrylate, phenyl glycidyl is sweet
The solution that oily ether and step (2) obtain is kept the temperature at 50~60 DEG C to be sufficiently mixed uniformly, and high-pressure homogeneous one at 40~60MPa
It is secondary, obtain component one；
(4) component two is obtained after being sufficiently mixed aliphatic polyamine and DMP-30 uniformly；
(5) above-mentioned parts by weight are matched into component one made from raw material and component two is applied after mixing.
A kind of thermally conductive high refractive index LED transparent epoxy resin casting glue of the invention has on the basis of translucidus is good
High refractive index and high thermal conductivity, while anti-aging cracking performance is preferable.Specifically, the gas phase titanium dioxide of addition high refractive index
With aluminum oxide nano-powder, it is greatly improved the refractive index of epoxy resin-base, and nanoscale gas phase titanium dioxide is not
Influence the light transmission of epoxy resin embedding adhesive body；Lac resin and tertiary sodium phosphate are mixed can prevent shellac to a certain extent
The polymerization of resin active group itself increases its thermal life and reduces brittleness；By lac resin and beeswax liquid, tricresyl phosphate
After sodium, dodecafluoroheptyl methacrylate, phenyl glycidyl ether and epoxy resin etc. are mixed and modified, lac resin is increased
With the flowability of beeswax, while the anti-aging cracking performance of epoxy resin is substantially increased, obtained casting glue has good
Thermal conductivity, modified gas phase titanic oxide and modified gas phase aluminum oxide in casting glue system especially with modified gas phase three
Al 2 O has preferable thermal conductivity, can preferably play thermal conductivity after uniform, sufficient dispersion is obtained in system.
Specific embodiment
Below by way of specific embodiment, the present invention will be further described, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
Embodiment 1: a kind of thermally conductive high refractive index LED transparent epoxy resin casting glue is made of component one and component two:
The parts by weight of one raw material of component match are as follows: 75 parts of epoxy resin, 15 parts of bleached shellac resin, polyethylene
8 parts of alcohol, 7 parts of beeswax liquid, 0.8 part of tertiary sodium phosphate, 7 parts of dodecafluoroheptyl methacrylate, 25 parts of refractive index modifying filler, phenyl
8 parts of glycidol ether, the parts by weight proportion of two raw material of component are as follows: 10 parts, DMP-301.5 parts of aliphatic polyamine.
Further, the refractive index modifying filler is modified gas phase titanic oxide and modified gas phase aluminum oxide
The mass parts ratio of mixture, the modified gas phase titanic oxide and modified gas phase aluminum oxide is 3:1.
Further, the modified gas phase titanic oxide the preparation method comprises the following steps: the gas phase titanium dioxide that will be dried
Titanium and gas phase aluminum oxide are placed in the NaOH solution that concentration is 10mol/L, are heated with stirring to 60 DEG C, are added under insulated and stirred
The epoxychloropropane solution for being 5:1 with gas phase titanium dioxide mass ratio, heat preservation return stirring react 4h, then use methanol, pure water
Cleaning product obtains modified gas phase titanic oxide after being 7,100 DEG C of vacuum dryings to pH repeatedly.
Further, the modification gas phase aluminum oxide the preparation method comprises the following steps: using ethanol solution, be incorporated as
The silane coupling agent KH560 of gas phase aluminum oxide quality 3%, second acid for adjusting pH are 6, are ultrasonically treated 1h, then will obtain
Mixed liquor is added to three-necked flask, and 4h is stirred at reflux at 75 DEG C, filters, and dehydrated alcohol is washed 2 times, and vacuum drying oven is dry, will
To solid content be fully ground to obtain modified gas phase aluminum oxide.
A kind of preparation method of the thermally conductive high refractive index LED transparent epoxy resin casting glue, comprising the following steps:
(1) bleached shellac resin and tertiary sodium phosphate are mixed and heated to 85 DEG C, insulated and stirred is uniform；
(2) it is added after beeswax liquid being heated to 85 DEG C to step (1) and obtains in lac resin liquid, and insulated and stirred 45min
To uniform, it is then cooled to 55 DEG C；
(3) epoxy resin, polyvinyl alcohol, refractive index modifying filler, dodecafluoroheptyl methacrylate, phenyl glycidyl is sweet
The solution that oily ether and step (2) obtain is kept the temperature at 55 DEG C to be sufficiently mixed uniformly, and high-pressure homogeneous primary at 50MPa, is obtained
Component one；
(4) component two is obtained after being sufficiently mixed aliphatic polyamine and DMP-30 uniformly；
(5) component one and component two are applied after mixing.
Embodiment 2: a kind of thermally conductive high refractive index LED transparent epoxy resin casting glue is made of component one and component two:
The parts by weight of one raw material of component match are as follows: 70 parts of epoxy resin, 10 parts of bleached shellac resin, polyethylene
7 parts of alcohol, 5 parts of beeswax liquid, 0.5 part of tertiary sodium phosphate, 5 parts of dodecafluoroheptyl methacrylate, 15 parts of refractive index modifying filler, phenyl
5 parts of glycidol ether, the parts by weight proportion of two raw material of component are as follows: 8 parts, DMP-301 parts of aliphatic polyamine.
Further, the refractive index modifying filler is modified gas phase titanic oxide and modified gas phase aluminum oxide
The mass parts ratio of mixture, the modified gas phase titanic oxide and modified gas phase aluminum oxide is 4:1, the modification gas phase
The preparation method is the same as that of Example 1 for titanium dioxide and modified gas phase aluminum oxide.
A kind of preparation method of the thermally conductive high refractive index LED transparent epoxy resin casting glue, comprising the following steps:
(1) bleached shellac resin and tertiary sodium phosphate are mixed and heated to 80 DEG C, insulated and stirred is uniform；
(2) it is added after beeswax liquid being heated to 80 DEG C to step (1) and obtains in lac resin liquid, and insulated and stirred 1h is to equal
It is even, then it is cooled to 50 DEG C；
(3) epoxy resin, polyvinyl alcohol, refractive index modifying filler, dodecafluoroheptyl methacrylate, phenyl glycidyl is sweet
The solution that oily ether and step (2) obtain is kept the temperature at 50 DEG C to be sufficiently mixed uniformly, and high-pressure homogeneous primary at 40MPa, is obtained
Component one；
(4) component two is obtained after being sufficiently mixed aliphatic polyamine and DMP-30 uniformly；
(5) component one and component two are applied after mixing.
Embodiment 3: a kind of thermally conductive high refractive index LED transparent epoxy resin casting glue is made of component one and component two:
The parts by weight of one raw material of component match are as follows: 80 parts of epoxy resin, 20 parts of bleached shellac resin, polyethylene
10 parts of alcohol, 10 parts of beeswax liquid, 1 part of tertiary sodium phosphate, 10 parts of dodecafluoroheptyl methacrylate, 40 parts of refractive index modifying filler, benzene
10 parts of base glycidol ether, the parts by weight proportion of two raw material of component are as follows: 12 parts, DMP-302 parts of aliphatic polyamine.
Further, the refractive index modifying filler is modified gas phase titanic oxide and modified gas phase aluminum oxide
The mass parts ratio of mixture, the modified gas phase titanic oxide and modified gas phase aluminum oxide is 2:1, the modification gas phase
The preparation method is the same as that of Example 1 for titanium dioxide and modified gas phase aluminum oxide.
A kind of preparation method of the thermally conductive high refractive index LED transparent epoxy resin casting glue, comprising the following steps:
(1) bleached shellac resin and tertiary sodium phosphate are mixed and heated to 90 DEG C, insulated and stirred is uniform；
(2) it is added after beeswax liquid being heated to 90 DEG C to step (1) and obtains in lac resin liquid, and insulated and stirred 0.5h is extremely
Uniformly, 60 DEG C are then cooled to；
(3) epoxy resin, polyvinyl alcohol, refractive index modifying filler, dodecafluoroheptyl methacrylate, phenyl glycidyl is sweet
The solution that oily ether and step (2) obtain is kept the temperature at 60 DEG C to be sufficiently mixed uniformly, and high-pressure homogeneous primary at 60MPa, is obtained
Component one；
(4) component two is obtained after being sufficiently mixed aliphatic polyamine and DMP-30 uniformly；
(5) component one and component two are applied after mixing.
Embodiment 4: a kind of thermally conductive high refractive index LED transparent epoxy resin casting glue is made of component one and component two:
The parts by weight of one raw material of component match are as follows: 70 parts of epoxy resin, 20 parts of bleached shellac resin, polyethylene
7 parts of alcohol, 10 parts of beeswax liquid, 0.5 part of tertiary sodium phosphate, 10 parts of dodecafluoroheptyl methacrylate, 15 parts of refractive index modifying filler, benzene
10 parts of base glycidol ether, the parts by weight proportion of two raw material of component are as follows: 8 parts, DMP-302 parts of aliphatic polyamine.
Further, the refractive index modifying filler is modified gas phase titanic oxide and modified gas phase aluminum oxide
The mass parts ratio of mixture, the modified gas phase titanic oxide and modified gas phase aluminum oxide is 5:2, the modification gas phase
The preparation method is the same as that of Example 1 for titanium dioxide and modified gas phase aluminum oxide.
A kind of preparation method of thermally conductive high refractive index LED transparent epoxy resin casting glue, specific steps are the same as implementation
Example 1.
Embodiment 5: a kind of thermally conductive high refractive index LED transparent epoxy resin casting glue is made of component one and component two:
The parts by weight of one raw material of component match are as follows: 72 parts of epoxy resin, 18 parts of bleached shellac resin, polyethylene
9 parts of alcohol, 6 parts of beeswax liquid, 0.6 part of tertiary sodium phosphate, 8 parts of dodecafluoroheptyl methacrylate, 30 parts of refractive index modifying filler, phenyl
7 parts of glycidol ether, the parts by weight proportion of two raw material of component are as follows: 9 parts, DMP-301.7 parts of aliphatic polyamine.
Further, the refractive index modifying filler is modified gas phase titanic oxide and modified gas phase aluminum oxide
The mass parts ratio of mixture, the modified gas phase titanic oxide and modified gas phase aluminum oxide is 7:2, the modification gas phase
The preparation method is the same as that of Example 1 for titanium dioxide and modified gas phase aluminum oxide.
A kind of preparation method of thermally conductive high refractive index LED transparent epoxy resin casting glue, specific steps are the same as implementation
Example 1.
Comparative example 1: a kind of thermally conductive high refractive index LED transparent epoxy resin casting glue is made of component one and component two:
The parts by weight of one raw material of component match are as follows: 75 parts of epoxy resin, 15 parts of bleached shellac resin, polyethylene
8 parts of alcohol, 7 parts of beeswax liquid, 0.8 part of tertiary sodium phosphate, 7 parts of dodecafluoroheptyl methacrylate, 25 parts of refractive index modifying filler, phenyl
8 parts of glycidol ether, the parts by weight proportion of two raw material of component are as follows: 10 parts, DMP-301.5 parts of aliphatic polyamine.
Further, the refractive index modifying filler is the mixture of gas phase titanium dioxide and gas phase aluminum oxide,
The mass parts ratio of the gas phase titanium dioxide and gas phase aluminum oxide is 3:1.
A kind of preparation method of the thermally conductive high refractive index LED transparent epoxy resin casting glue, comprising the following steps:
(1) bleached shellac resin and tertiary sodium phosphate are mixed and heated to 85 DEG C, insulated and stirred is uniform；
(2) it is added after beeswax liquid being heated to 85 DEG C to step (1) and obtains in lac resin liquid, and insulated and stirred 45min
To uniform, it is then cooled to 55 DEG C；
(3) epoxy resin, polyvinyl alcohol, refractive index modifying filler, dodecafluoroheptyl methacrylate, phenyl glycidyl is sweet
The solution that oily ether and step (2) obtain is kept the temperature at 55 DEG C to be sufficiently mixed uniformly, and high-pressure homogeneous primary at 50MPa, is obtained
Component one；
(4) component two is obtained after being sufficiently mixed aliphatic polyamine and DMP-30 uniformly；
(5) component one and component two are applied after mixing.
The performance of the obtained casting glue of above-described embodiment 1-5 and comparative example 1 is tested, it will be in above-described embodiment 1-5
Casting glue component one and component two are placed in container and are quickly uniformly mixed, and are placed in vacuum tank and place under the vacuum degree of 10 supports
10min is poured and solidifies the film for being prepared into 2mm thickness, its basic performance of standardized test, and with commercial clear epoxy resin encapsulated
Glue is that comparative example 2 does identical test, as a result as shown in the table:
The average grain diameter of gas phase titanium dioxide is 21nm, is lower than visible wavelength 1/10th, nanoscale gas phase titanium dioxide
Titanium is applied to can avoid the rayleigh scattering phenomenon of colloid in encapsulating colloid, but directly gas phase titanium dioxide is added to epoxy resin
It processes and uses in encapsulating colloid, generate serious aggregation between powder particle, cause the scattering of light, the serious light for reducing composite colloid
Penetrance and refractive index, particle buildup lead to particle uneven distribution while to affect particle thermally conductive in epoxy resin-base
The performance of performance.Therefore gas phase titanium dioxide has been carried out modification by the present invention, to realize gas phase titanium dioxide and asphalt mixtures modified by epoxy resin
Between aliphatic radical body it is good dissolve each other or dispersibility；Same principle, gas phase aluminum oxide average grain diameter are less than gas phase titanium dioxide,
It is found through experiments that, it is carried out of the invention modified it can be achieved good epoxy resin-base to dissolve each other or disperse
Property, and then preferably play thermal conductivity and improve the refractive index of epoxy resin-base.
Claims (5)
1. a kind of thermally conductive high refractive index LED transparent epoxy resin casting glue, which is characterized in that be made of component one and component two:
The constitutive material of the component one are as follows: epoxy resin, bleached shellac resin, polyvinyl alcohol, beeswax liquid, tertiary sodium phosphate,
Dodecafluoroheptyl methacrylate, refractive index modifying filler, phenyl glycidyl ether, the constitutive material of the component two are as follows:
Aliphatic polyamine and DMP-30；
The parts by weight of the component one match are as follows: 70~80 parts of epoxy resin, 10~20 parts of bleached shellac resin, polyethylene
7~10 parts of alcohol, 5~10 parts of beeswax liquid, 0.5~1 part of tertiary sodium phosphate, 5~10 parts of dodecafluoroheptyl methacrylate, refractive index change
Property 15~40 parts of filler, 5~10 parts of phenyl glycidyl ether, the component two parts by weight proportion are as follows: aliphatic polybasic
8~12 parts of amine, DMP-301~2 part.
2. a kind of thermally conductive high refractive index LED transparent epoxy resin casting glue according to claim 1, it is characterised in that: institute
The refractive index modifying filler stated is the mixture of modified gas phase titanic oxide and modified gas phase aluminum oxide, the modified gas phase
The mass parts ratio of titanium dioxide and modified gas phase aluminum oxide is 2~4:1.
3. a kind of thermally conductive high refractive index LED transparent epoxy resin casting glue according to claim 2, it is characterised in that: institute
The modified gas phase titanic oxide stated the preparation method comprises the following steps: the gas phase titanium dioxide being dried and gas phase aluminum oxide are set
In the NaOH solution that concentration is 10mol/L, 60 DEG C are heated with stirring to, is added and gas phase titanium dioxide mass ratio under insulated and stirred
For the epoxychloropropane solution of 5:1, keep the temperature return stirring and react 4h, then with methanol, pure water repeatedly cleaning product to pH be 7,
Modified gas phase titanic oxide is obtained after 100 DEG C of vacuum dryings.
4. a kind of thermally conductive high refractive index LED transparent epoxy resin casting glue according to claim 2, it is characterised in that: institute
The modification gas phase aluminum oxide stated the preparation method comprises the following steps: using ethanol solution, be incorporated as gas phase aluminum oxide quality
3% silane coupling agent KH560, second acid for adjusting pH are 6, are ultrasonically treated 1h, obtained mixed liquor is then added to three mouthfuls of burnings
Bottle, is stirred at reflux 4h at 75 DEG C, filters, and dehydrated alcohol is washed 2 times, and vacuum drying oven is dry, and obtained solid content is fully ground
Obtain modified gas phase aluminum oxide.
5. a kind of described in any item preparation methods of thermally conductive high refractive index LED transparent epoxy resin casting glue of claim 1-4,
Characterized by comprising the following steps:
(1) bleached shellac resin and tertiary sodium phosphate are mixed and heated to 80~90 DEG C, insulated and stirred is uniform；
(2) it is added after beeswax liquid being heated to 80~90 DEG C to step (1) and obtains in lac resin liquid, and insulated and stirred 0.5~
Then 1h is cooled to 50~60 DEG C to uniform；
(3) by epoxy resin, polyvinyl alcohol, refractive index modifying filler, dodecafluoroheptyl methacrylate, phenyl glycidyl ether
The solution obtained with step (2) is kept the temperature at 50~60 DEG C to be sufficiently mixed uniformly, and high-pressure homogeneous primary at 40~60MPa,
Obtain component one；
(4) component two is obtained after being sufficiently mixed aliphatic polyamine and DMP-30 uniformly；
(5) component one and component two are applied after mixing.
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| CN110066634A (en) * | 2019-05-22 | 2019-07-30 | 谢灵卫 | A kind of wear-resisting high-strength degree epoxyn, preparation method and application |
| CN112608583A (en) * | 2020-12-04 | 2021-04-06 | 东莞智昊光电科技有限公司 | Thermosetting composite material, application, LED bracket, preparation method of LED bracket and LED product |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110066634A (en) * | 2019-05-22 | 2019-07-30 | 谢灵卫 | A kind of wear-resisting high-strength degree epoxyn, preparation method and application |
| CN112608583A (en) * | 2020-12-04 | 2021-04-06 | 东莞智昊光电科技有限公司 | Thermosetting composite material, application, LED bracket, preparation method of LED bracket and LED product |
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Application publication date: 20190510 |