CN113512353A - Sweat-resistant and weather-resistant finish paint and preparation method thereof - Google Patents
Sweat-resistant and weather-resistant finish paint and preparation method thereof Download PDFInfo
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- CN113512353A CN113512353A CN202110908376.2A CN202110908376A CN113512353A CN 113512353 A CN113512353 A CN 113512353A CN 202110908376 A CN202110908376 A CN 202110908376A CN 113512353 A CN113512353 A CN 113512353A
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- resistant
- sweat
- weather
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- finish paint
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to a sweat-resistant weather-resistant finish paint which is prepared from the following components in parts by weight: 6-30 parts of high-functionality aliphatic polyurethane acrylate, 2-8 parts of polycarbonate modified acrylate, 10-35 parts of reactive diluent, 0.1-5.0 parts of photoinitiator and 0.1-0.6 part of auxiliary agent.
Description
Technical Field
The invention belongs to the field of chemical coatings, and particularly relates to a sweat-resistant and weather-resistant finish paint and a preparation method thereof. The finish paint can be used for workpiece surface decoration or protection of mobile phones, watchbands, and other electronic products.
Background
With the development of plastic decoration technology, most of plastic blank products are formed by compression molding to form more micro defects such as craters and the like, so that the surface gloss is low and the aesthetic degree is poor, and therefore, the plastic products need to be decorated and protected on the surface and then coated with finish. The coated plastic surface shines, and the decoration of the plastic can save a large amount of metal materials and reduce the weight of the product.
The finishing paint is generally cured by UV radiation, a solvent is not required to be added during the UV radiation curing, the finishing paint is environment-friendly and nontoxic, has low pungent smell, can be cured at normal temperature, is energy-saving and has high production efficiency, and has great advantages when being used for curing finishing paints of mobile phone middle frames, watch bands and the like.
Disclosure of Invention
The invention aims to provide a sweat-resistant and weather-resistant finish paint, which solves the problem that mobile phone shells and watch straps are not sweat-resistant, and promotes the VOC-free application of high-solid radiation-cured coatings in the fields of mobile phones, watch straps and electronics.
The technical scheme of the invention is as follows:
the sweat-resistant and weather-resistant finish paint comprises the following components in parts by weight:
the high-functionality aliphatic polyurethane acrylate is an aliphatic polyurethane acrylic prepolymer with the functionality of 6-15;
the photoinitiator is one or more selected from a-hydroxyalkyl benzophenone, 2-hydroxy-2-methyl-1-phenyl-1-acetone or 1-hydroxy-cyclohexyl benzophenone.
Preferably, the finishing coat consists of the following components in parts by weight:
10-25 parts of high-functionality aliphatic polyurethane acrylate
4-6 parts of polycarbonate modified acrylate
10-25 parts of reactive diluent
0.6 to 4.0 parts of photoinitiator
0.2 to 0.4 portion of auxiliary agent,
preferably, the high-functionality aliphatic polyurethane acrylate is selected from one or more of Changxing Etercure6145-100, Sadoma SartomerCN9013 NS, Songda new material SD1119 or Japanese synthetic chemistry UV-7600B.
Preferably, the polycarbonate modified acrylate is selected from one or more of Sadorma SartomerCN 9001NS, Rohm and Haas A-12, Songda new material SD1099 or Songda new material SD 1127.
Preferably, the reactive diluent is selected from one or more of Nomura chemical industry Co., Ltd A-400, A-600, Zhan Xin EB140 or Zhan Xin OTA 480.
Preferably, the auxiliary agent comprises a leveling agent, wherein the leveling agent is selected from one or more of ByK 333, BYK 306, BYK 371 Effka EFKA 3600 or Digao TEGO 2100.
Preferably, the preparation method comprises the following steps: firstly, uniformly stirring a photoinitiator, then adding modified acrylate, uniformly mixing, then adding high-functionality polyurethane acrylate and an active diluent, finally adding an auxiliary agent, uniformly stirring, and filtering the finally obtained mixed solution to obtain the required finish paint.
The sweat-resistant and weather-resistant finish paint disclosed by the invention has good sweat resistance and high solid content. The surface finish paint is suitable for electronic products such as mobile phones, watch cases and the like.
The invention has the beneficial effects that:
1. the finish paint obtained by the invention has the excellent characteristics of excellent chemical resistance, hydrophobicity, weather resistance, low surface energy and the like, and has good recoatability and high production efficiency.
2. The finish paint can meet the requirements of the finish paint on the properties of bending, water boiling and artificial sweat.
3. The finish paint has low irritation to skin, and is P11 & lt 2.0 & gt.
After the finish paint is coated on the surface of a workpiece, a paint film which is bent by 90 degrees on the surface of the workpiece does not crack, the flexibility is excellent, the hardness of the paint film can reach 1000g (2H) after the coating is cured, and the decoration and protection effects of the surface of a product are greatly improved.
The finish paint has good protection effect and extremely high artificial sweat resistance, the obtained paint film has good chemical resistance, and the artificial sweat has a pH value of 4.7 and does not foam or fall off after being processed for 240 hours in a high-temperature and high-humidity environment; excellent ring measuring performance and yellowing resistance, and the like. The coating overcomes the defects of poor flexibility and poor chemical resistance of the existing surface protective coating, and meets the requirements of decorative and protective performances of the surfaces of consumer electronic products such as mobile phones, watchbands and the like. The method has the characteristics of convenience in operation, simplicity in construction, wide applicability and the like, and the service life of the electronic product is effectively prolonged.
4. The finish paint is environment-friendly, has high solid content, and has super artificial sweat resistance after being cured by radiation.
5. The invention has low construction viscosity, high conversion rate of paint film and low volume shrinkage of paint film.
6. The invention has good flexibility, artificial sweat resistance, weather resistance, recoatability and the like.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The invention is further illustrated by the following examples, which are not intended to be limiting in any way.
Example 1:
example 2:
example 3:
example 4:
example 5:
the topcoats in the above examples were mixed according to the preparation method in the specification.
The application method of the finish paint comprises the following steps:
1. spraying: and spraying a layer of finish paint on the material, wherein the film thickness is 18-25 mu m, the infrared leveling is 60 ℃, the X5min illumination intensity is 900-1100mj/CM2, and the construction parameters are adjusted according to the process.
The finish of the above example was sprayed onto the substrate, leveled for 5min at 60 ℃, and:
(1) hundred grids: cutting with 1.0mm blade by 10 × 10, and pulling with 3M 610 adhesive tape for 3 times;
(2)GB/T 6739-96
(3) temperature cycle: 25 ℃, 95% RH, 3h to 55 ℃; 95% RH, keeping for 9h, then reducing to 25 ℃ for 3 h; maintaining at 95% RH for 9h, repeating for 3 times for one cycle;
(4) QUV accelerated aging test: the lamp tube is UVB 313nm, and the light intensity is 0.63W/m2After the temperature is 60 ℃/4h, the condensation is performed for 50 ℃/4h in one cycle, and 12 cycles are performed in total;
(5) and (3) low-temperature storage: -30 ℃/6h, -40 ℃/16h, -30 ℃/15min, 25 ℃/2 h;
(6) and (3) high-temperature storage: 55 ℃/6h, 70 ℃/16h, 25 ℃/2 h;
(7) temperature impact: one cycle of 5 cycles at-40 ℃, 2h, 70 ℃, 2 h;
(8) cosmetic resistance test: uniformly coating vaseline and skin lotion on the surface of a product, then heating to 55 ℃ and 95% RH for 3h at 25 ℃ and 95% RH for 9h, then cooling to 25 ℃ and 95% RH for 3h, keeping for 9h, repeating for 2 times in a cycle, and then standing for 2h at 25 ℃ and 75% RH;
(9) testing for hand sweat resistance: soaking a piece of dust-free cloth on the surface of the sample by sweat with the pH value of 6.5 for 2min, and then standing for 2h at normal temperature;
(10) and (3) salt spray testing: in a closed environment at 35 ℃, the humidity is more than 85 percent, the pH value is between 6.5 and 7.2, and the performance of the ultraviolet curing is as follows after 5 percent sodium chloride solution is continuously sprayed for 48 hours:
remarking: film thickness 18-25 μm exposure energy 900-2
Comparative example 1:
comparative example 2:
comparative example 3:
comparative example 4:
comparative example 5:
comparative example 6:
the environmental-friendly high-solid radiation-curing super-artificial sweat-resistant finish paint of the comparative example is subjected to performance test, and the result is as follows:
remarking: film thickness 18-25 μm exposure energy 900-2
The above embodiments only show the preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the invention, and all technical solutions obtained by using the technical essence of the present invention in the above embodiments in the form of equivalent replacement or equivalent transformation are still within the scope of the technical solution of the present invention.
Claims (7)
1. The sweat-resistant and weather-resistant finish paint is characterized by comprising the following components in parts by weight:
the high-functionality aliphatic polyurethane acrylate is an aliphatic polyurethane acrylic prepolymer with the functionality of 6-15;
the photoinitiator is one or more selected from a-hydroxyalkyl benzophenone, 2-hydroxy-2-methyl-1-phenyl-1-acetone or 1-hydroxy-cyclohexyl benzophenone.
2. The sweat-resistant, weather-resistant finish paint as claimed in claim 1, wherein the finish paint is composed of the following components in parts by weight:
10-25 parts of high-functionality aliphatic polyurethane acrylate
4-6 parts of polycarbonate modified acrylate
10-25 parts of reactive diluent
0.6 to 4.0 parts of photoinitiator
0.2-0.4 part of an auxiliary agent.
3. The sweat-resistant weather-resistant finish paint as claimed in claim 1 or 2, wherein the high-functionality aliphatic polyurethane acrylate is selected from one or more of Changxing chemical 6145-100, Sadoma CN9013 NS, Songda new material SD1119 or Japanese synthetic chemical UV-7600B.
4. The sweat-resistant, weather-resistant topcoat as claimed in claim 1 or 2, wherein the polycarbon-modified acrylate is selected from one or more of sartomer CN 9001NS, rote haas a-12, sondar new material SD1099, or sondar new material SD 1127.
5. The sweat-resistant, weather-resistant finish according to claim 1 or 2, wherein the reactive diluent is selected from one or more of newmuran a-400, a-600, panneweb 140, or pannewota 480.
6. The sweat-resistant, weather-resistant topcoat as claimed in claim 1 or 2, wherein the auxiliary agent comprises a leveling agent, wherein the leveling agent is selected from one or more of BYK 333, BYK 306, BYK 371 EFKA 3600 or dygao TEGO 2100.
7. The method of making a sweat resistant, weather resistant topcoat as recited in any one of claims 1-6, wherein the method of making comprises the steps of: firstly, uniformly stirring a photoinitiator, then adding modified acrylate, uniformly mixing, then adding high-functionality polyurethane acrylate and an active diluent, finally adding an auxiliary agent, uniformly stirring, and filtering the finally obtained mixed solution to obtain the required finish paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110908376.2A CN113512353A (en) | 2021-08-09 | 2021-08-09 | Sweat-resistant and weather-resistant finish paint and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110908376.2A CN113512353A (en) | 2021-08-09 | 2021-08-09 | Sweat-resistant and weather-resistant finish paint and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN113512353A true CN113512353A (en) | 2021-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110908376.2A Pending CN113512353A (en) | 2021-08-09 | 2021-08-09 | Sweat-resistant and weather-resistant finish paint and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1935917A (en) * | 2005-09-23 | 2007-03-28 | 比亚迪股份有限公司 | Bottom coating composition, and its preparing method and multilayer coat |
| CN1986708A (en) * | 2005-12-21 | 2007-06-27 | 比亚迪股份有限公司 | Primer composition and its preparing process and use |
| CN108300277A (en) * | 2018-03-15 | 2018-07-20 | 江苏宏泰高分子材料有限公司 | A kind of 3D laser carvings high-flexibility UV type PVD finishing coats |
-
2021
- 2021-08-09 CN CN202110908376.2A patent/CN113512353A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1935917A (en) * | 2005-09-23 | 2007-03-28 | 比亚迪股份有限公司 | Bottom coating composition, and its preparing method and multilayer coat |
| CN1986708A (en) * | 2005-12-21 | 2007-06-27 | 比亚迪股份有限公司 | Primer composition and its preparing process and use |
| CN108300277A (en) * | 2018-03-15 | 2018-07-20 | 江苏宏泰高分子材料有限公司 | A kind of 3D laser carvings high-flexibility UV type PVD finishing coats |
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Application publication date: 20211019 |
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