CN115490991A - High-performance crystal glue drop and application thereof - Google Patents
High-performance crystal glue drop and application thereof Download PDFInfo
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- CN115490991A CN115490991A CN202211144047.6A CN202211144047A CN115490991A CN 115490991 A CN115490991 A CN 115490991A CN 202211144047 A CN202211144047 A CN 202211144047A CN 115490991 A CN115490991 A CN 115490991A
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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
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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Abstract
The invention discloses a high-performance crystal dripping adhesive and a crystal material prepared by the same, wherein the crystal dripping adhesive comprises an agent A and an agent B, and the weight ratio of the agent A to the agent B is 100-120; the A agent comprises the following components: 99.2 to 99.6 weight percent of composite epoxy resin, 0.2 to 0.5 weight percent of flatting agent and 0.2 to 0.5 weight percent of defoaming agent; the component of the agent B is: 96.5-98.3wt% of mixed acid anhydride, 1.5-3wt% of curing accelerator and 0.2-0.5wt% of ultraviolet absorbent; the invention carries out scientific compatibility of raw materials, and can effectively solve the problems of poor aging resistance, poor toughness, bubbles, pinholes and the like in the epoxy crystal glue-dripping.
Description
Technical Field
The invention relates to the technical field of epoxy crystal glue, in particular to high-performance crystal glue and application thereof.
Background
The epoxy resin is a general material and is widely applied in the fields of national defense aviation, automobiles, ship manufacturing, chemistry and chemical industry and civilian use; the epoxy resin has excellent insulating property, electrical property, mechanical property and adhesive property, has good processing property, can be cured at low temperature and medium temperature, can be cured at high temperature, and has wide application range; the epoxy resin has good light transmission, good sealing performance, UV resistance and aging resistance, is particularly suitable for optical materials, and is more applied to LED lamps, backlight sources, billboards, transparent ornaments and the like. According to incomplete statistics, the occupancy rate of the epoxy resin in the optical material packaging field is 40-60%, and the epoxy resin plays a significant role in the field.
The crystal diamond is common in daily life and is generally used for home decoration, hanging ornament, toys, clothes and shoes. The crystal drill prepared by the traditional process uses glass as a raw material, and the crystal drill prepared by the traditional process has a plurality of defects. Firstly, glass is melted at high temperature and then is cast and molded, so that the preparation process is complicated, the energy consumption is high, and the production efficiency is low; secondly, the glass has high hardness and large brittleness, is easy to damage and can cause harm to human bodies; finally, the crystal drill prepared by the glass has high cost, the product price is higher, and the crystal drill does not have price advantage.
In order to make up for the shortcomings of the traditional process, researchers seek new materials and new processes for substitution. The transmittance of the epoxy resin is close to that of glass, the epoxy resin is suitable for being used as a high-transmittance material, and some epoxy resin glues for preparing crystal diamond exist in the market, and generally, the glues have three problems: (1) The aging resistance of the glue is poor, and the problem of yellowing and discoloration can occur after long-time use, so that the appearance of the product is influenced; (2) The product has poor toughness, is easy to crack and damage and has short service cycle; (3) The fluidity of the glue is not good enough, and the product has the defects of micropores, bubbles and the like.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a high-performance crystal dripping adhesive and application thereof. The invention carries out scientific compatibility of raw materials, and can effectively solve the problems of poor aging resistance, poor toughness, bubbles, pinholes and the like in the epoxy crystal glue-dripping.
The technical scheme of the invention is as follows:
the invention provides a high-performance crystal dripping adhesive, which comprises an agent A and an agent B, wherein the weight ratio of the agent A to the agent B is 100-120;
the agent A comprises the following components:
99.2-99.6wt% of composite epoxy resin
0.2 to 0.5 weight percent of flatting agent
0.2 to 0.5 weight percent of defoaming agent;
the component of the agent B is:
96.5-98.3wt% of mixed anhydride
1.5-3wt% of curing accelerator
0.2-0.5wt% of ultraviolet absorbent;
the composite epoxy resin comprises 40-75wt% of bisphenol A epoxy resin, 10-30wt% of hydrogenated bisphenol A epoxy resin, 10-20wt% of organosilicon modified epoxy resin and 5-10wt% of low-viscosity epoxy resin;
the mixed anhydride consists of 70-90wt% of methyl hexahydrophthalic anhydride and 10-30wt% of polypropylene glycol modified anhydride.
In one embodiment of the present invention, the bisphenol A epoxy resin has an epoxy equivalent weight of 180 to 220g/eq; the epoxy equivalent of the hydrogenated bisphenol A epoxy resin is 200-300g/eq; the epoxy equivalent of the organosilicon modified epoxy resin is 200-1500g/eq; the epoxy equivalent of the low-viscosity epoxy resin is 150-500g/eq.
In one embodiment of the invention, the bisphenol A epoxy resin is one or more of R-139S, 850S, NPEL-128E, YN1826, YD-127, GY 6010; the hydrogenated bisphenol A epoxy resin is one or more of EP-4080E, NPEK-113 and YX-8000; the organosilicon modified epoxy resin is one or more of ALBIFLEX348, ALBIFLEX 296, EPSI-6862, EPSI-6878 and KR-470; the low-viscosity epoxy resin is one or more of 1, 6-hexanediol diglycidyl ether, 1, 4-butanediol diglycidyl ether, polypropylene glycol diglycidyl ether and polyethylene glycol diglycidyl ether.
In one embodiment of the invention, the leveling agent is one or more of BYK-358N, BYK-310, TEGO Glide 450, BYK-320 and Perenol S43.
In one embodiment of the invention, the defoamer is one or more of BYK-A530, BYK-066N, TEGO Airex 900, dow Corning 163, dow Corning 100F.
In one embodiment of the invention, the polypropylene glycol modified anhydride is new physical and chemical HP-08.
In one embodiment of the invention, the cure accelerator is one or more of tetrabutylphosphonium bromide (ammonium), benzyltriphenylphosphonium bromide (ammonium), hexadecyltributylphosphonium bromide (ammonium), triphenylethylphosphonium bromide (ammonium), triphenylbutylphosphonium bromide (ammonium), tetrabutyl-o, o-diethylphosphonium dithiophosphate, U-CAT SA102 (DUB-modified zincate), PX-4ET (tetrabutylphosphonium acetate), 2E4MZ (2-ethyl-4-methylimidazole).
In one embodiment of the invention, the UV absorber is one or more of N- (2-ethoxyphenyl) -N '- (4-ethylphenyl) ethanediamide (UV-1033), 2- (2' -hydroxy-5 '-tert-octylphenyl) benzotriazole (UV-329), 2- (2' -hydroxy-3 ',5' -di-tert-butylphenyl) -5-chlorobenzotriazole (UV-327), ethyl 2-cyano-3, 3-diphenylacrylate (UV-335).
The second purpose of the invention is to provide a method for preparing a crystal material by high-performance crystal glue dripping, which comprises the following steps:
preparation of an agent A: putting 99.2-99.6wt% of composite epoxy resin into a reaction kettle, controlling the temperature to be 70-80 ℃, stirring in vacuum for 1-2h, then cooling to 50-60 ℃, adding 0.2-0.5wt% of flatting agent and 0.2-0.5wt% of defoaming agent, and continuing stirring for 30-60min to obtain a crystal dripping agent A; viscosity at 25 ℃ is 10000-26000mpa · s;
preparation of agent B: putting 96.5-98.3wt% of mixed anhydride into a reaction kettle, controlling the temperature to be 60-70 ℃, adding 1.5-3wt% of curing accelerator and 0.2-0.5wt% of ultraviolet absorbent, and stirring for 1-2h to obtain a crystal dripping agent B;
mixing the agent A and the agent B according to a weight ratio of 100-90, defoaming in vacuum at 50-60 ℃ for 10-20 minutes, filling into a mold through a dispenser, curing at 80-120 ℃, and demolding after curing to obtain the crystal material.
The third purpose of the invention is to provide the application of the high-performance crystal dripping glue for preparing the crystal drill.
The existing epoxy resin composition for crystal drilling has the problem of poor aging resistance, because the composition lacks of raw materials with yellowing resistance; the prior epoxy resin composition for crystal drilling has the problem of poor toughness because of the lack of flexible components in the composition; the existing epoxy resin composition for crystal drilling has the problems of defects in products, because the viscosity of the composition is higher and the defoaming property is poorer.
The invention can solve the problem of no yellowing resistance in the prior art by matching the types and the use amounts of the raw materials. Poor toughness and the like.
The beneficial technical effects of the invention are as follows:
according to the invention, the hydrogenated bisphenol A type epoxy resin and the organic silicon modified epoxy resin are adopted as raw materials, so that the aging resistance of the composition can be improved; the toughness of the product can be improved by compounding the polypropylene glycol modified anhydride and the organic silicon modified epoxy resin; in addition, the addition of the low-viscosity epoxy resin can adjust the viscosity of the composition, and the use of a special defoaming agent can improve the defoaming property of the composition. The adjustment schemes have strong pertinence, solve practical problems, and experimental results show that the schemes achieve expected effects.
The product of the invention has certain toughness, contains soft monomers such as organosilicon modified epoxy resin, polypropylene glycol modified anhydride and the like, and can reduce the hardness of the product, thereby obtaining the product with better performance.
The crystal material prepared by the invention has good optical performance, the UV resistance of the product is excellent, the product can not yellow after being used outdoors for 3 years, and the UV resistance effect is obviously improved compared with the domestic similar products. The product has the same high temperature resistance, does not change color after being baked for 10 hours at 150 ℃, and has greater advantages compared with domestic similar products. The product is tested for 100 hours under the current of 150mA, and the light attenuation is higher than 70 percent, which shows that the product has outstanding aging resistance and is superior to domestic similar products. The product has high plane strain fracture toughness, high impact strength and good toughness. In addition, the glass transition temperature of the embodiment provided by the invention is higher than 120 ℃, the toughness is better, the hardness is higher, and the embodiment is suitable for the field of crystal drills.
Detailed Description
The present invention will be described in detail with reference to examples.
Example 1
A method for preparing a crystal material by high-performance crystal dripping glue comprises the following steps:
preparation of an agent A: putting 56.5 parts of R-139S, 20 parts of EP-4080E, 15 parts of ALBIFLEX348 and 8 parts of 1, 4-butanediol diglycidyl ether into a reaction kettle, controlling the temperature to be 70 ℃, stirring in vacuum for 1.5 hours, then cooling to 50 ℃, adding 0.3 part of BYK-310 and 0.2 part of BYK-066N, and continuing stirring for 30 minutes to obtain a crystal dripping agent A; viscosity at 25 ℃ of 15600mpa · s;
preparation of the agent B: putting 77.2 parts of methylhexahydrophthalic anhydride and 20 parts of new Nippon physical and chemical HP-08 into a reaction kettle, controlling the temperature to be 60 ℃, adding 2.5 parts of tetrabutylammonium bromide and 0.3 part of UV-329, and stirring for 1h to obtain a crystal dripping agent B;
mixing the agent A and the agent B according to a weight ratio of 100, defoaming in vacuum at 50 ℃ for 15 minutes, filling and sealing the mixture into a mold through a dispenser, curing at 90 ℃ for 6 hours, and demolding after curing to obtain the crystal material.
Example 2
A method for preparing a crystal material by high-performance crystal dripping glue comprises the following steps:
preparation of an agent A: putting 64.6 parts of YD-127, 15 parts of NPEK-113, 10 parts of EPSI-6862 and 10 parts of polyethylene glycol diglycidyl ether into a reaction kettle, controlling the temperature to 80 ℃, stirring in vacuum for 1.0h, then cooling to 60 ℃, adding 0.2 part of TEGO Glide 450 and 0.2 part of Dow Corning 163, and continuing stirring for 30min to obtain a crystal dripping adhesive A; a viscosity at 25 ℃ of 13800mpa · s;
preparation of agent B: putting 86.8 parts of methylhexahydrophthalic anhydride and 10 parts of new physical and chemical HP-08 into a reaction kettle, controlling the temperature to be 70 ℃, adding 3 parts of PX-4ET and 0.2 part of UV-1033, and stirring for 1.5 hours to obtain a crystal dripping agent B;
mixing the agent A and the agent B according to a weight ratio of 100 to 120, defoaming in vacuum at 60 ℃ for 10 minutes, filling the mixture into a mold through a dispenser, curing at 100 ℃ for 5 hours, and demolding after curing to obtain the crystal material.
Example 3
A method for preparing a crystal material by high-performance crystal glue dripping comprises the following steps:
preparation of an agent A: putting 44.2 parts of NPEL-128E, 30 parts of YX-8000, 20 parts of EPSI-6878 and 5 parts of 1, 6-hexanediol diglycidyl ether into a reaction kettle, controlling the temperature to be 75 ℃, stirring in vacuum for 2 hours, cooling to 60 ℃, adding 0.5 part of BYK-358N and 0.3 part of TEGO Airex 900, and continuing stirring for 30 minutes to obtain a crystal dripping adhesive A; viscosity at 25 ℃ of 23500 mPa.s;
preparation of the agent B: putting 67.5 parts of methylhexahydrophthalic anhydride and 30 parts of new Nichiphysical and chemical HP-08 into a reaction kettle, controlling the temperature to 65 ℃, adding 2 parts of triphenyl butyl phosphonium bromide and 0.5 part of UV-327, and stirring for 1.5 hours to obtain a crystal dripping agent B;
and (2) mixing the agent A and the agent B according to a weight ratio of 100.
Comparative example 1
On the basis of example 1, a crystal material was prepared according to the method of example 1 by replacing the hydrogenated bisphenol A type epoxy resin EP-4080E with bisphenol A type epoxy resin R-139S, and the corresponding properties of the product were measured, and the results are shown in Table 2.
Comparative example 2
On the basis of the example 1, the organosilicon modified epoxy resin ALBIFLEX348 is replaced by bisphenol A type epoxy resin R-139S, the crystal material is prepared according to the method of the example 1, and the corresponding performance of the product is tested, and the result is shown in the table 2.
Comparative example 3
On the basis of example 1, a crystal material was prepared by replacing HP-08, which is a new daily product, with methylhexahydrophthalic anhydride according to the method of example 1, and the corresponding properties of the product were tested, and the results are shown in Table 2.
And (3) performance testing:
(1) Table 1 shows the results of the performance tests of examples 1-3 of the present invention and a commercial epoxy resin product.
TABLE 1
As can be seen from the data in the table:
the light transmittance of the product provided by the embodiment of the invention is higher than 96%, and the refractive index is larger than or equal to 1.51, so that the product provided by the invention has excellent light transmittance and transparency, is similar to the index of glass, and is suitable for being applied to the field of crystal drills.
The bending strength of the products of 3 examples is more than 135MPa, the strength of the products is higher, and the mechanical properties are good.
The plane strain fracture toughness of the 3 example products is more than 1.30 MPa.m 1/2 And the impact strength is less than 12MPa, which shows that the product has good toughness.
It is worth mentioning that the product of the invention is outstanding in aging resistance. The product will not change color until 12 hours after the UV resistance of the product is tested. The experiment was carried out using a UV lamp with a power of 150w, and the energy of 1 hour corresponds to 0.3 years of outdoor natural light irradiation, which means that the examples provided by the present invention do not change color when used outdoors for at least 3 years. The product has excellent high temperature resistance, and the color change time of the product exceeds 10 hours when the product is baked at the temperature of 150 ℃. In addition, the light attenuation test effect of the product is also ideal, when 150mA current is applied, and the light attenuation of the product is more than 72% after the test is carried out for 100 hours, and the data show that the product has good effect on the aging resistance.
The glass transition temperature of the product is higher than 120 ℃, the hardness is higher, and the product is suitable for being used in crystal drills.
The material of example 1 has high performance-to-cost ratio and is a general-purpose material. The embodiment 2 has better comprehensive performance and lower price. The light-transmitting glass has the advantages of outstanding aging resistance, high light transmittance and transparency and optimal performance, and can be reasonably selected by customers according to different use requirements.
According to the invention, a commercially available product is selected for comparison, and the result shows that the product has excellent performance and obvious advantages. Taking example 1 as an example, the light transmittance and the refractive index of example 1 are equivalent to those of a commercial product, but example 1 changes color in a UV test within 15 hours, changes color in a high temperature test at 150 ℃ within 13 hours, has a light transmittance of 76.2 percent after a light decay test for 100 hours, and has corresponding indexes of 5 hours, 6 hours and 55.6 percent respectively, and it can be seen from this comparison that the aging resistance of example 1 is outstanding, the product can be used under UV and high temperature conditions for a long time, and the service life is longer, which is the key point of the invention superior to the commercial product.
The glass transition temperature of the commercial product is 82.9 ℃, the indexes of the examples provided by the invention are all higher than 120 ℃, so that the fact that the commercial product possibly uses an amine curing agent can be inferred, the acid anhydride curing agent is used in the invention, and the acid anhydride curing agent is remarkable in aging resistance, light transmittance, glass transition temperature and the like, and the invention is also an innovative point.
In addition, the product of example 1 had a plane strain fracture toughness of 1.35MPa · m 1/2 The index of a commercially available product is 0.83 MPa.m 1/2 This shows that example 1 has more excellent toughness, can resist external force, reduces cracking and breakage of the product, and prolongs the service life. The impact strength of example 1 was 12.6MPa, and the index of the commercially available product was 10.7MPa, which is a good evidence of toughness in example 1.
The data in the table show that the crystal material has obvious advantages in the aspects of UV resistance, high temperature resistance, light decay test and the like, can meet the special requirements of crystal drill materials, and is expected to be widely used in the field of crystal drills.
(2) Table 2 shows the results of the performance tests of the products of example 1 according to the invention and of comparative examples 1 to 3.
TABLE 2
As can be seen from the data in table 2, in example 1 of the present invention, the indexes of light transmittance, refractive index, bending strength, glass transition temperature, plane strain fracture toughness, impact strength, and hardness are not very different from those of comparative example 1, and example 1 shows advantages in UV resistance, high temperature resistance, and light decay test. This indicates that the hydrogenated bisphenol a type epoxy resin is not an alternative in the present invention.
Compared with the comparative example 2, the indexes of light transmittance, refractive index, bending strength and hardness are not greatly different in the example 1 of the invention, and the example 1 has obvious advantages in the aspects of UV resistance, high temperature resistance and light attenuation test. In addition, the reduction of plane strain fracture toughness and impact strength of comparative example 2 is significant, which indicates that the toughness of the product is greatly reduced. From these data we can readily see that silicone modified epoxy resin plays an important role in the present invention, and the use of this material plays a key role in enhancing the performance of the product.
Compared with the comparative example 3, the indexes of light transmittance, refractive index, bending strength, glass transition temperature and hardness are not very different in the example 1 of the invention, and the example 1 has advantages in the aspects of UV resistance, high temperature resistance and light decay test. The plane strain fracture toughness of comparative example 3 was reduced to 1.26MPa m 1/2 The impact strength is reduced to 11.5MPa, and the two data show that the toughness of the comparative example 3 is obviously reduced, which indicates that the polypropylene glycol modified anhydride has outstanding effects on aging resistance, toughness and the like and is an irreplaceable raw material.
In conclusion, the invention obtains a series of high-performance crystal drilling materials by using the component A composed of raw materials such as bisphenol A type epoxy resin, hydrogenated bisphenol A type epoxy resin, organic silicon modified epoxy resin, low-viscosity epoxy resin and the component B composed of raw materials such as methyl hexahydrophthalic anhydride, polypropylene glycol modified anhydride and the like and combining with a proper preparation process. Compared with the products sold in the market, the product has obvious advantages in the aspects of ageing resistance, optical performance, glass transition temperature and the like, and has wide market application prospect.
Claims (10)
1. The high-performance crystal glue drop is characterized by comprising an agent A and an agent B, wherein the weight ratio of the agent A to the agent B is 100-120;
the agent A comprises the following components:
99.2-99.6wt% of composite epoxy resin
0.2 to 0.5 weight percent of flatting agent
0.2 to 0.5 weight percent of defoaming agent;
the component of the agent B is:
96.5-98.3wt% of mixed anhydride
1.5-3wt% of curing accelerator
0.2-0.5wt% of ultraviolet absorbent;
the composite epoxy resin comprises 40-75wt% of bisphenol A epoxy resin, 10-30wt% of hydrogenated bisphenol A epoxy resin, 10-20wt% of organosilicon modified epoxy resin and 5-10wt% of low-viscosity epoxy resin;
the mixed anhydride consists of 70-90wt% of methyl hexahydrophthalic anhydride and 10-30wt% of polypropylene glycol modified anhydride.
2. The crystal dripping glue according to claim 1, wherein the epoxy equivalent of the bisphenol A epoxy resin is 180-220g/eq; the epoxy equivalent of the hydrogenated bisphenol A epoxy resin is 200-300g/eq; the epoxy equivalent of the organosilicon modified epoxy resin is 200-1500g/eq; the epoxy equivalent of the low-viscosity epoxy resin is 150-500g/eq.
3. The crystal dripping glue according to claim 1, wherein the bisphenol a epoxy resin is one or more of R-139S, 850S, NPEL-128E, YN1826, YD-127 and GY 6010; the hydrogenated bisphenol A type epoxy resin is one or more of EP-4080E, NPEK-113 and YX-8000; the organosilicon modified epoxy resin is one or more of ALBIFLEX348, ALBIFLEX 296, EPSI-6862, EPSI-6878 and KR-470; the low-viscosity epoxy resin is one or more of 1, 6-hexanediol diglycidyl ether, 1, 4-butanediol diglycidyl ether, polypropylene glycol diglycidyl ether and polyethylene glycol diglycidyl ether.
4. The crystal dripping glue of claim 1, wherein the leveling agent is one or more of BYK-358N, BYK-310, TEGO Glide 450, BYK-320 and Perenol S43.
5. The crystal dripping glue as claimed in claim 1, wherein the defoaming agent is one or more of BYK-A530, BYK-066N, TEGO Airex 900, dow Corning 163 and Dow Corning 100F.
6. The crystal dripping glue according to claim 1, wherein the polypropylene glycol modified anhydride is HP-08, new science.
7. The crystal dripping gum as claimed in claim 1, wherein the curing accelerator is one or more of tetrabutyl phosphonium bromide (ammonium), benzyltriphenylphosphonium bromide (ammonium), hexadecyltributyl phosphonium bromide (ammonium), triphenylethyl phosphonium bromide (ammonium), triphenylbutyl phosphonium bromide (ammonium), tetrabutyl-o, o-diethyl phosphonium dithiophosphate, U-CAT SA102, PX-4ET, 2E4 MZ.
8. The crystal drip according to claim 1, wherein the UV absorber is one or more of N- (2-ethoxyphenyl) -N '- (4-ethylphenyl) oxalamide, 2- (2' -hydroxy-5 '-tert-octylphenyl) benzotriazole, 2- (2' -hydroxy-3 ',5' -di-tert-butylphenyl) -5-chlorobenzotriazole, and ethyl 2-cyano-3, 3-diphenylacrylate.
9. A method for preparing crystal material by high-performance crystal dripping glue according to claim 1, characterized in that the method comprises the following steps:
preparation of an agent A: putting 99.2-99.6wt% of composite epoxy resin into a reaction kettle, controlling the temperature to be 70-80 ℃, stirring in vacuum for 1-2h, then cooling to 50-60 ℃, adding 0.2-0.5wt% of flatting agent and 0.2-0.5wt% of defoaming agent, and continuing stirring for 30-60min to obtain a crystal dripping agent A;
preparation of the agent B: putting 96.5-98.3wt% of mixed anhydride into a reaction kettle, controlling the temperature to be 60-70 ℃, adding 1.5-3wt% of curing accelerator and 0.2-0.5wt% of ultraviolet absorbent, and stirring for 1-2h to obtain a crystal dripping agent B;
mixing the agent A and the agent B according to a weight ratio of 100-90, defoaming in vacuum at 50-60 ℃ for 10-20 minutes, filling and sealing into a mold through a dispenser, curing at 80-120 ℃, and demolding after curing to obtain the crystal material.
10. The use of the high-performance crystal dripping glue of claim 1 for preparing crystal drills.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103045147A (en) * | 2012-12-21 | 2013-04-17 | 上海康达化工新材料股份有限公司 | Cold-proof and damp-proof epoxy resin main agent for crystal glue drip and preparation method thereof |
| JP2013133339A (en) * | 2011-12-22 | 2013-07-08 | Nippon Zeon Co Ltd | Epoxy resin composition, cured product, transparent sealing material, and photosemiconductor device |
| CN113999492A (en) * | 2021-11-22 | 2022-02-01 | 无锡嘉联电子材料有限公司 | UV-resistant aging-resistant high-performance LED epoxy resin composition and preparation method thereof |
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2022
- 2022-09-20 CN CN202211144047.6A patent/CN115490991A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013133339A (en) * | 2011-12-22 | 2013-07-08 | Nippon Zeon Co Ltd | Epoxy resin composition, cured product, transparent sealing material, and photosemiconductor device |
| CN103045147A (en) * | 2012-12-21 | 2013-04-17 | 上海康达化工新材料股份有限公司 | Cold-proof and damp-proof epoxy resin main agent for crystal glue drip and preparation method thereof |
| CN113999492A (en) * | 2021-11-22 | 2022-02-01 | 无锡嘉联电子材料有限公司 | UV-resistant aging-resistant high-performance LED epoxy resin composition and preparation method thereof |
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