CN117659849A - Weather-resistant colored elastic paint, preparation method thereof and mobile communication equipment - Google Patents
Weather-resistant colored elastic paint, preparation method thereof and mobile communication equipment Download PDFInfo
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- CN117659849A CN117659849A CN202311761841.XA CN202311761841A CN117659849A CN 117659849 A CN117659849 A CN 117659849A CN 202311761841 A CN202311761841 A CN 202311761841A CN 117659849 A CN117659849 A CN 117659849A
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- 239000003973 paint Substances 0.000 title claims abstract description 64
- 238000010295 mobile communication Methods 0.000 title claims abstract description 12
- 238000002360 preparation method Methods 0.000 title abstract description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 121
- 239000012860 organic pigment Substances 0.000 claims abstract description 80
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 56
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 55
- 229910000077 silane Inorganic materials 0.000 claims abstract description 38
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 19
- 239000004611 light stabiliser Substances 0.000 claims abstract description 18
- 239000011247 coating layer Substances 0.000 claims abstract description 17
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 15
- 229920005668 polycarbonate resin Polymers 0.000 claims abstract description 14
- 239000004431 polycarbonate resin Substances 0.000 claims abstract description 14
- 239000003960 organic solvent Substances 0.000 claims abstract description 13
- -1 silicon dioxide compound Chemical class 0.000 claims abstract description 13
- 239000002131 composite material Substances 0.000 claims abstract description 10
- 229910021485 fumed silica Inorganic materials 0.000 claims abstract description 10
- 238000000498 ball milling Methods 0.000 claims description 26
- 239000000203 mixture Substances 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 12
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 10
- 239000000377 silicon dioxide Substances 0.000 claims description 9
- 239000001052 yellow pigment Substances 0.000 claims description 9
- OSNILPMOSNGHLC-UHFFFAOYSA-N 1-[4-methoxy-3-(piperidin-1-ylmethyl)phenyl]ethanone Chemical compound COC1=CC=C(C(C)=O)C=C1CN1CCCCC1 OSNILPMOSNGHLC-UHFFFAOYSA-N 0.000 claims description 6
- 150000001412 amines Chemical class 0.000 claims description 6
- 239000010410 layer Substances 0.000 claims description 6
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 5
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 238000009210 therapy by ultrasound Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 4
- QFFVPLLCYGOFPU-UHFFFAOYSA-N barium chromate Chemical compound [Ba+2].[O-][Cr]([O-])(=O)=O QFFVPLLCYGOFPU-UHFFFAOYSA-N 0.000 claims description 3
- 239000001055 blue pigment Substances 0.000 claims description 3
- ZLFVRXUOSPRRKQ-UHFFFAOYSA-N chembl2138372 Chemical compound [O-][N+](=O)C1=CC(C)=CC=C1N=NC1=C(O)C=CC2=CC=CC=C12 ZLFVRXUOSPRRKQ-UHFFFAOYSA-N 0.000 claims description 3
- XCJYREBRNVKWGJ-UHFFFAOYSA-N copper(II) phthalocyanine Chemical compound [Cu+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 XCJYREBRNVKWGJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 229920001228 polyisocyanate Polymers 0.000 claims description 3
- 239000005056 polyisocyanate Substances 0.000 claims description 3
- 239000001054 red pigment Substances 0.000 claims description 3
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 3
- 230000000052 comparative effect Effects 0.000 description 5
- 238000004040 coloring Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 239000004922 lacquer Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000012975 dibutyltin dilaurate Substances 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229940124543 ultraviolet light absorber Drugs 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Paints Or Removers (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
The invention discloses weather-resistant colored elastic paint, a preparation method thereof and mobile communication equipment. The weather-resistant colored elastic paint comprises the following components in parts by weight: 40-50 parts of polycarbonate resin; 1-3 parts of organic pigment and modified nano silicon dioxide compound; 6-7 parts of fumed silica; 1-3 parts of light stabilizer; 7-10 parts of curing agent; 1-4 parts of an auxiliary agent; 20-40 parts of organic solvent; the composite of the organic pigment and the modified nano silicon dioxide comprises an inner core of the organic pigment and a coating layer of silane modified nano silicon dioxide at least partially coated on the surface of the organic pigment. The invention can effectively avoid the short-time back adhesion of the elastic paint and can also effectively improve the wear resistance and weather resistance of the elastic paint.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to weather-resistant colored elastic paint, a preparation method thereof and mobile communication equipment.
Background
Currently, various electronic or electric products, such as digital cameras, notebook computers, mobile phones, etc., are widely used in people's life. The shells of such products are mostly made of plastics and plastic materials, and after the production of the shells, the surfaces of the shells are sprayed with a protective and decorative coating, for example an elastic lacquer of the polycarbonate type. However, the existing elastic paint is usually colorless, and after the organic pigment is added, the problem of short-time back adhesion and poor adhesion is easy to occur.
Disclosure of Invention
The invention mainly aims to provide weather-resistant colored elastic paint, a preparation method thereof and mobile communication equipment, and aims to solve the problems that short-time back adhesion and poor adhesion are easy to occur after an organic pigment is added into the elastic paint in the prior art.
In order to achieve the aim, the invention provides weather-resistant colored elastic paint, which comprises the following components in parts by weight:
40-50 parts of polycarbonate resin;
1-3 parts of organic pigment and modified nano silicon dioxide compound;
6-7 parts of fumed silica;
1-3 parts of light stabilizer;
7-10 parts of curing agent;
1-4 parts of an auxiliary agent;
20-40 parts of organic solvent;
the composite of the organic pigment and the modified nano silicon dioxide comprises an inner core of the organic pigment and a coating layer of silane modified nano silicon dioxide at least partially coated on the surface of the organic pigment.
Optionally, the mass ratio of the organic pigment to the organic pigment in the modified nano silicon dioxide compound is 70-95%.
Alternatively, the organic pigment comprises a benzidine yellow pigment, a toluidine red pigment, a permanent yellow pigment, or a phthalocyanine blue pigment.
Optionally, the silane-modified nanosilica comprises nanosilica surface-modified with a silane coupling agent.
Optionally, the silane modified nanosilica has a median particle diameter Dv50 of 10-30nm.
Optionally, the curing agent comprises at least one of polyisocyanate and butyl acetate.
Optionally, the auxiliary agent comprises at least one of a handfeel auxiliary agent, a leveling agent and a drier.
Optionally, the light stabilizer comprises an ultraviolet absorber or a hindered amine light stabilizer.
The invention further provides a preparation method of the weather-resistant colored elastic paint, which comprises the following steps:
ball milling and mixing the organic pigment and the silane modified nano silicon dioxide to obtain a mixture;
and uniformly mixing the mixture, the polycarbonate resin, the fumed silica, the light stabilizer, the curing agent, the auxiliary agent and the organic solvent to obtain the weather-resistant colored elastic paint.
Optionally, the step of ball-milling and mixing the organic pigment and the silane modified nano silica to obtain a mixture comprises the following steps:
adding nano silicon dioxide into an organic solvent, performing ultrasonic treatment to obtain a suspension, then adding a silane coupling agent, heating to 70-80 ℃ for reaction, separating the reacted slurry by a centrifuge to obtain silane modified nano silicon dioxide,
ball milling is carried out on the silane modified nano silicon dioxide and the organic pigment, the ball milling speed is 100-400r/min, and the ball milling time is 1-2 h, so that a mixture is obtained.
In still another aspect, the present invention provides a mobile communication device, including a housing, a paint layer is disposed on the housing, and the paint layer is made of the weather-resistant colored elastic paint. The mobile communication device may be a cell phone or telephone wristwatch, iPad, etc.
According to the technical scheme, the organic pigment and modified nano silicon dioxide compound comprises an inner core of the organic pigment and a coating layer of silane modified nano silicon dioxide at least partially coated on the surface of the organic pigment, wherein the coating layer of silane modified nano silicon dioxide at least partially coated on the surface of the organic pigment is used for carrying out surface modification on the organic pigment, on one hand, the problem that the organic pigment is poor in dispersibility in elastic paint taking polycarbonate resin as a main material and easy to agglomerate, so that the adhesion of the elastic paint is poor is solved, and the organic pigment is uniformly dispersed under the action of a silica bond on the nano silicon dioxide surface of the coating layer, so that the elastic paint provided by the invention is good in adhesion. On the other hand, the surface of the organic pigment and modified nano silicon dioxide compound is a coating layer of silane modified nano silicon dioxide, so that the short-time back adhesion of the elastic paint can be effectively avoided. In addition, the silane modified nano silicon dioxide is nano-grade particles, and is transparent after being dispersed, so that the coloring of the organic pigment is not affected. The coating layer of the silane modified nano silicon dioxide at least partially coated on the surface of the organic pigment can also effectively improve the wear resistance and weather resistance of the elastic paint.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below. The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be regarded as not exist and not within the protection scope of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Currently, various electronic or electric products, such as digital cameras, notebook computers, mobile phones, etc., are widely used in people's life. The shells of such products are mostly made of plastics and plastic materials, and after the production of the shells, the surfaces of the shells are sprayed with a protective and decorative coating, for example an elastic lacquer of the polycarbonate type. However, the existing elastic paint is usually colorless, and after the organic pigment is added, the problem of short-time back adhesion and poor adhesion is easy to occur.
In view of the above, in one aspect, the embodiment of the invention provides a weather-resistant colored elastic paint, which comprises the following components in parts by weight:
40-50 parts of polycarbonate resin;
1-3 parts of organic pigment and modified nano silicon dioxide compound;
6-7 parts of fumed silica;
1-3 parts of light stabilizer;
7-10 parts of curing agent;
1-4 parts of an auxiliary agent;
20-40 parts of organic solvent;
the composite of the organic pigment and the modified nano silicon dioxide comprises an inner core of the organic pigment and a coating layer of silane modified nano silicon dioxide at least partially coated on the surface of the organic pigment.
Therefore, the organic pigment and modified nano silicon dioxide compound comprises an inner core of the organic pigment and a coating layer of silane modified nano silicon dioxide at least partially coated on the surface of the organic pigment, wherein the coating layer of silane modified nano silicon dioxide at least partially coated on the surface of the organic pigment is used for carrying out surface modification on the organic pigment, on one hand, the problem that the organic pigment is poor in dispersibility in elastic paint taking polycarbonate resin as a main material and easy to agglomerate, so that the adhesion of the elastic paint is poor is solved, and the organic pigment is uniformly dispersed under the action of a silica bond on the nano silicon dioxide surface of the coating layer. On the other hand, the surface of the organic pigment and modified nano silicon dioxide compound is a coating layer of silane modified nano silicon dioxide, so that the short-time back adhesion of the elastic paint can be effectively avoided. In addition, the silane modified nano silicon dioxide is nano-grade particles, and is transparent after being dispersed, so that the coloring of the organic pigment is not affected. The coating layer of the silane modified nano silicon dioxide at least partially coated on the surface of the organic pigment can also effectively improve the wear resistance and weather resistance of the elastic paint.
In some embodiments, the mass ratio of the organic pigment to the organic pigment in the modified nano-silica composite is 70-95%. Under the proper proportion, the silane modified nano silicon dioxide can be adsorbed on the surface of the organic pigment, and the coloring of the organic pigment is not affected.
In some embodiments, the organic pigment comprises a benzidine yellow pigment, a toluidine red pigment, a permanent yellow pigment, or a phthalocyanine blue pigment. The organic pigment is not particularly limited in kind, and can be used in the existing elastic paint.
In some embodiments, the silane-modified nanosilica comprises nanosilica surface-modified with a silane coupling agent. The silane coupling agent may be exemplified by KH560 silane coupling agent. The silane modified nano silicon dioxide has better dispersion performance and is not easy to agglomerate. And the silica bond on the surface of the nano silicon dioxide ensures that the elastic paint system is more stable, and is beneficial to avoiding the short-time back adhesion of the elastic paint.
In some embodiments, the silane modified nanosilica has a median particle diameter Dv50 of 10-30nm. Under the proper proportion, the silane modified nano silicon dioxide can be adsorbed on the surface of the organic pigment, and the coloring of the organic pigment is not affected.
In some embodiments, the curing agent comprises at least one of a polyisocyanate, butyl acetate. The curing agent is added to perform a crosslinking reaction with the polycarbonate resin, so that hydroxyl groups in the polycarbonate resin are blocked, and the water resistance and chemical resistance of a paint film are improved.
In some embodiments, the adjunct includes at least one of a feel adjunct, a leveling agent, a drier. The leveling agent is used for ensuring good leveling property of a paint film, the handfeel auxiliary agent can be a high polymer, smooth and thick meat feel is provided, and the drier improves the drying speed of the rubber paint. The drier may be exemplified by dibutyltin dilaurate, and the hand aid and leveling agent may be exemplified by BYK333.
In some embodiments, the organic solvent may be an ester, a benzene organic solvent, may act as a diluent, or may be used for viscosity adjustment.
In some embodiments, the light stabilizer comprises an ultraviolet light absorber or a hindered amine light stabilizer. The addition of the UV-resistant auxiliary agent can further improve outdoor weather resistance and prevent high-energy rays such as ultraviolet rays generated by sunlight irradiation from decomposing and breaking molecules of the rubber paint. The light stabilizer may be exemplified by a hindered amine light stabilizer from basf company.
The invention further provides a preparation method of the weather-resistant colored elastic paint, which comprises the following steps:
ball milling and mixing the organic pigment and the silane modified nano silicon dioxide to obtain a mixture;
and uniformly mixing the mixture, the polycarbonate resin, the fumed silica, the light stabilizer, the curing agent, the auxiliary agent and the organic solvent to obtain the weather-resistant colored elastic paint.
In some embodiments, the step of ball milling and mixing the organic pigment and the silane modified nano silica to obtain a mixture comprises:
adding nano silicon dioxide into an organic solvent, performing ultrasonic treatment to obtain a suspension, then adding a silane coupling agent, heating to 70-80 ℃ for reaction, separating the reacted slurry by a centrifuge to obtain silane modified nano silicon dioxide,
ball milling is carried out on the silane modified nano silicon dioxide and the organic pigment, the ball milling speed is 100-400r/min, and the ball milling time is 1-2 h, so that a mixture is obtained. Under the proper ball milling speed and ball milling time, the organic pigment and modified nano silicon dioxide compound with the structure of the inner core of the organic pigment and the coating layer of the silane modified nano silicon dioxide at least partially coated on the surface of the organic pigment can be formed.
In the preparation method provided by the invention, firstly, the organic pigment and the silane modified nano silicon dioxide are subjected to ball milling and mixing to obtain a mixture, the silane modified nano silicon dioxide can be effectively attached to the surface of the organic pigment, and then, the mixture, the polycarbonate resin, the fumed silica, the light stabilizer, the curing agent, the auxiliary agent and the organic solvent are uniformly mixed to obtain the weather-resistant colored elastic paint. The preparation method has simple steps and high preparation efficiency; in addition, the weather-resistant colored elastic paint prepared by the preparation method provided by the invention has all the beneficial effects of the weather-resistant colored elastic paint, and is not described in detail herein.
In still another aspect, the present invention provides a mobile communication device, including a housing, a paint layer is disposed on the housing, and the paint layer is made of the weather-resistant colored elastic paint. The mobile communication device may be a cell phone or telephone wristwatch, iPad, etc. The mobile communication equipment has all the technical schemes of the weather-resistant colored elastic paint, so that the mobile communication equipment has all the beneficial effects of the weather-resistant colored elastic paint, and the invention is not repeated here.
The following description of the embodiments of the present invention will be presented in further detail with reference to the examples, which should be understood as being merely illustrative of the present invention and not limiting.
Example 1
This example provides a weatherable colored elastomeric paint comprising the following components:
4.5Kg of polycarbonate resin;
0.2Kg of organic pigment and modified nano silicon dioxide compound;
0.6Kg of fumed silica;
0.2Kg of hindered amine light stabilizer of Basoff company;
0.8Kg of N3390 curing agent;
BYK333 auxiliary 0.2Kg;
3Kg of butyl acetate;
the organic pigment and modified nano silicon dioxide compound comprises an inner core of benzidine yellow pigment and a coating layer of nano silicon dioxide modified by KH560 silane coupling agent, wherein the coating layer is at least partially coated on the surface of the organic pigment.
Examples 2 to 14
Examples 2-14 are similar to example 1 except that the composition of the weatherable colored elastomeric paint is different, see specifically Table 1, wherein the units of each component are Kg.
TABLE 1 Components and proportions of the weather-resistant colored elastomeric paints of examples 2 to 14
Examples 15 to 19
Examples 15-19 are similar to example 1 except that the starting materials are different, see in particular Table 2.
TABLE 2 weather resistant colored elastomeric paints of examples 15-19
Example 20
This example provides a method of preparing the weatherable colored elastomeric paint of example 1, comprising:
ball milling and mixing the organic pigment and the silane modified nano silicon dioxide, and performing planetary ball milling at the ball milling rate of 200r/min for 1h to obtain a mixture;
uniformly mixing 0.2Kg of mixture, 4.5Kg of polycarbonate resin, 0.6Kg of fumed silica, 0.2Kg of hindered amine light stabilizer of Basoff company, 0.8Kg of N3390 curing agent, 0.2Kg of BYK333 auxiliary agent and 3Kg of butyl acetate to obtain the weather-resistant colored elastic paint;
the silane modified nano silicon dioxide is prepared by adding nano silicon dioxide into toluene, performing ultrasonic treatment for 30min to obtain suspension, then adding KH560 silane coupling agent, continuing ultrasonic treatment for 5min, then heating to 80 ℃ to perform reaction, and separating the reacted slurry by adopting a centrifuge.
Example 21
The present example was different from example 20 in that the organic pigment and the silane-modified nanosilicon dioxide were ball-milled and mixed, and a mixture was obtained by planetary ball milling at a ball milling rate of 50r/min for 30 min.
Comparative example 1
This comparative example is similar to example 1, and the preparation process is similar to example 20, except that the organic pigment and modified nanosilica complex is replaced with an organic pigment (benzidine yellow pigment).
Comparative example 2
This comparative example is similar to example 1, and the preparation process is similar to example 20, except that the organic pigment and modified nanosilica composite is replaced with an organic pigment and nanosilica composite, wherein the organic pigment and nanosilica composite is benzidine yellow pigment and nanosilica is obtained by planetary ball milling at a ball milling rate of 200r/min for 1 h.
Performance testing
(1) Wear-resistant RCA: RCA paper tape abrasion resistance tester.
(2) Tack: the test was carried out at a temperature of 60℃and a humidity of 90% Rh for 30 days.
TABLE 1
As shown in Table 1, the examples adopting the technical scheme of the invention have no back adhesion for 30 days, uniform color distribution and RCA of more than or equal to 50 times. The speed and time of the ball milling in example 21 are small, which affects the adhesion of the silane modified silica on the surface of the organic pigment, thereby affecting the color step and the time of the back tack.
Referring to examples of the present invention and comparative examples 1 to 2, it can be seen that the elastic paint directly obtained with the organic pigment has short back bonding time, uneven pigment distribution, and poor abrasion resistance, while the elastic paint obtained with the unmodified nano silica and organic pigment composite has good abrasion resistance, even distribution, but short back bonding time.
The foregoing is merely a preferred embodiment of the present invention and is not intended to limit the scope of the present invention, but various modifications and variations will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The weather-resistant colored elastic paint is characterized by comprising the following components in parts by weight:
40-50 parts of polycarbonate resin;
1-3 parts of organic pigment and modified nano silicon dioxide compound;
6-7 parts of fumed silica;
1-3 parts of light stabilizer;
7-10 parts of curing agent;
1-4 parts of an auxiliary agent;
20-40 parts of organic solvent;
the composite of the organic pigment and the modified nano silicon dioxide comprises an inner core of the organic pigment and a coating layer of silane modified nano silicon dioxide at least partially coated on the surface of the organic pigment.
2. The weather-resistant colored elastomeric paint of claim 1, wherein the mass ratio of the organic pigment to the organic pigment in the modified nano-silica composite is 70-95%.
3. The weather-resistant colored elastomeric paint of claim 1, wherein said organic pigment comprises a benzidine yellow pigment, a toluidine red pigment, a permanent yellow pigment, or a phthalocyanine blue pigment.
4. The weatherable colored elastomeric paint of claim 1, wherein the silane modified nanosilica comprises nanosilica surface modified with a silane coupling agent.
5. The weatherable colored elastomeric paint according to claim 1, wherein said silane modified nanosilica has a median particle diameter Dv50 of 10-30nm.
6. The weather-resistant colored elastomeric paint of claim 1, wherein said curing agent comprises at least one of polyisocyanate, butyl acetate.
7. The weather-resistant colored elastic paint according to claim 1, wherein the auxiliary agent comprises at least one of a handfeel auxiliary agent, a leveling agent and a drier; and/or the number of the groups of groups,
the light stabilizer includes an ultraviolet absorber or a hindered amine light stabilizer.
8. A method for preparing a weather-resistant colored elastic paint, which is characterized by comprising the following steps:
ball milling and mixing the organic pigment and the silane modified nano silicon dioxide to obtain a mixture;
and uniformly mixing the mixture, the polycarbonate resin, the fumed silica, the light stabilizer, the curing agent, the auxiliary agent and the organic solvent to obtain the weather-resistant colored elastic paint.
9. The method of preparing according to claim 8, wherein the step of ball-milling and mixing the organic pigment and the silane-modified nano silica to obtain the mixture comprises:
adding nano silicon dioxide into an organic solvent, performing ultrasonic treatment to obtain a suspension, then adding a silane coupling agent, heating to 70-80 ℃ for reaction, separating the reacted slurry by a centrifuge to obtain silane modified nano silicon dioxide,
ball milling is carried out on the silane modified nano silicon dioxide and the organic pigment, the ball milling speed is 100-400r/min, and the ball milling time is 1-2 h, so that a mixture is obtained.
10. A mobile communication device, comprising a housing, wherein a paint layer is arranged on the housing, and the paint layer is made of the weather-resistant colored elastic paint as claimed in claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311761841.XA CN117659849A (en) | 2023-12-20 | 2023-12-20 | Weather-resistant colored elastic paint, preparation method thereof and mobile communication equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311761841.XA CN117659849A (en) | 2023-12-20 | 2023-12-20 | Weather-resistant colored elastic paint, preparation method thereof and mobile communication equipment |
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| Publication Number | Publication Date |
|---|---|
| CN117659849A true CN117659849A (en) | 2024-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311761841.XA Pending CN117659849A (en) | 2023-12-20 | 2023-12-20 | Weather-resistant colored elastic paint, preparation method thereof and mobile communication equipment |
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| Country | Link |
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| CN (1) | CN117659849A (en) |
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2023
- 2023-12-20 CN CN202311761841.XA patent/CN117659849A/en active Pending
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