CN115537106A - Water-based hand-feeling rubber coating and using method thereof - Google Patents
Water-based hand-feeling rubber coating and using method thereof Download PDFInfo
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- CN115537106A CN115537106A CN202211163503.1A CN202211163503A CN115537106A CN 115537106 A CN115537106 A CN 115537106A CN 202211163503 A CN202211163503 A CN 202211163503A CN 115537106 A CN115537106 A CN 115537106A
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- 238000010073 coating (rubber) Methods 0.000 title claims abstract description 66
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title abstract description 18
- 238000000576 coating method Methods 0.000 claims abstract description 31
- 229920002635 polyurethane Polymers 0.000 claims abstract description 23
- 239000004814 polyurethane Substances 0.000 claims abstract description 23
- 229920005862 polyol Polymers 0.000 claims abstract description 19
- 150000003077 polyols Chemical class 0.000 claims abstract description 18
- 229920000515 polycarbonate Polymers 0.000 claims abstract description 14
- 239000004417 polycarbonate Substances 0.000 claims abstract description 14
- 229920000728 polyester Polymers 0.000 claims abstract description 10
- 239000012948 isocyanate Substances 0.000 claims abstract description 8
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 8
- 239000008367 deionised water Substances 0.000 claims abstract description 5
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 5
- 239000011248 coating agent Substances 0.000 claims description 29
- 239000006185 dispersion Substances 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 11
- 229920003009 polyurethane dispersion Polymers 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 239000002518 antifoaming agent Substances 0.000 claims description 9
- 239000002562 thickening agent Substances 0.000 claims description 7
- 239000005056 polyisocyanate Substances 0.000 claims description 6
- 229920001228 polyisocyanate Polymers 0.000 claims description 6
- 229920001296 polysiloxane Polymers 0.000 claims description 6
- 239000005057 Hexamethylene diisocyanate Substances 0.000 claims description 5
- 229920001577 copolymer Polymers 0.000 claims description 4
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical group [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims description 4
- 239000004530 micro-emulsion Substances 0.000 claims description 4
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 3
- 125000001931 aliphatic group Chemical group 0.000 claims description 3
- 238000009835 boiling Methods 0.000 claims description 3
- 238000004945 emulsification Methods 0.000 claims description 3
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 claims description 3
- 239000000178 monomer Substances 0.000 claims description 3
- 229920000570 polyether Polymers 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- -1 small molecule polyol Chemical class 0.000 claims description 2
- 238000003860 storage Methods 0.000 abstract description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract description 10
- 238000010276 construction Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 239000012752 auxiliary agent Substances 0.000 abstract description 8
- 239000000843 powder Substances 0.000 abstract description 7
- 239000000428 dust Substances 0.000 abstract description 6
- 239000000853 adhesive Substances 0.000 abstract description 5
- 230000001070 adhesive effect Effects 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000002245 particle Substances 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 13
- 238000002360 preparation method Methods 0.000 description 9
- 238000002156 mixing Methods 0.000 description 8
- 239000002994 raw material Substances 0.000 description 8
- 239000003921 oil Substances 0.000 description 7
- 239000003973 paint Substances 0.000 description 7
- 230000008033 biological extinction Effects 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 239000003960 organic solvent Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 3
- 239000005058 Isophorone diisocyanate Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004131 Bayer process Methods 0.000 description 1
- 241000699670 Mus sp. Species 0.000 description 1
- 241000135309 Processus Species 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000004205 dimethyl polysiloxane Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 239000006224 matting agent Substances 0.000 description 1
- 238000000643 oven drying Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000010345 tape casting Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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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 belongs to the technical field of coatings, and particularly relates to a water-based hand-feeling rubber coating and a using method thereof. The invention combines the components of aqueous self-extinction polyurethane dispersoid, aqueous polyester polycarbonate polyurethane polyol dispersoid, hand feeling auxiliary agent, deionized water, aqueous isocyanate and the like. The water-based hand-feeling rubber coating has the characteristics of excellent hand feeling, good scratch resistance, good alcohol wiping resistance, good adhesive force, good gloss uniformity, good storage stability and the like. The application method of the water-based hand-feeling rubber coating is simple and convenient, and is convenient for construction and industrial application, and the water-based hand-feeling rubber coating does not need to be added with matting powder in the production process, so that dust pollution in the production process is avoided, the water-based hand-feeling rubber coating is diluted by water in the construction stage, the safety and environmental protection in the use process are ensured, and the harm to the body of a constructor is low. In addition, the water-based hand-feeling rubber coating also has non-flammable fire resistance, and is safer to produce, store and transport.
Description
Technical Field
The invention belongs to the technical field of coatings, and particularly relates to a water-based hand-feeling rubber coating and a using method thereof.
Background
The rubber coating provides a good touch feeling similar to rubber, and is widely applied to the surfaces of various plastic electronics, metals, woodware and the like, such as mobile phone shells, telephones, automotive upholsteries, microphones, electric hair dryers, mice, keyboards and other products.
At present, a large amount of matting powder needs to be added in the production process of the oil-based rubber coating to cause dust pollution, the oil-based rubber coating contains a large amount of organic solvent, and the oil-based rubber coating needs to be diluted by adding a large amount of organic solvent in the construction stage, so that the oil-based rubber coating generates a large amount of organic solvent volatilization in the construction process to cause pollution to the environment and has certain harm to the body of a constructor. And because the matte powder is used for matting, the final gloss can be influenced by the temperature, the humidity, the coating thickness and the atomization state during construction, so that the gloss difference among batches is caused.
The aqueous rubber paint used in the market at present generally uses a system of adding matting powder into an aqueous polyurethane dispersion, the gloss uniformity, the scratch resistance and the storage stability of a coating are insufficient, the coating is easy to delaminate, and the matting by the matting powder is easy to cause dust pollution in the production process.
The self-extinction aqueous polyurethane dispersoid is used in the aqueous handfeel rubber coating, the innovation point is that dispersoid particles with different particle sizes (the particle size is between 1.0 and 10 mu m generally) and certain elasticity are introduced, the particles with different particle sizes are mutually fused to form a continuous rough surface in the film forming process, the diffuse reflection of the coating is increased to obtain the extinction performance, and the generated beneficial effects are that the coating has very stable appearance gloss, is not influenced by the change of external construction conditions, has good storage stability, does not need to add extinction powder in the production process, thereby avoiding dust pollution in the production process, uses the aqueous handfeel rubber coating diluted by water in the construction stage, is safe and environment-friendly in the use process, and has low harm to the body of constructors. In addition, the water-based hand-feeling rubber coating also has non-flammable fire resistance, and is safer to produce, store and transport. The water-based hand-feeling rubber coating has the characteristics of excellent hand feeling, good scratch resistance, good alcohol wiping resistance, good adhesive force, good gloss uniformity, good storage stability and the like. At present, the country strengthens the investment of infrastructure, emphasizes the environmental protection, energy conservation and emission reduction, and leads the application of the water-based hand-feeling rubber coating to be the development trend in the future.
Disclosure of Invention
Aiming at the problems of the existing oily rubber coating, the invention provides another water-based rubber coating with handfeel and a using method thereof.
The invention provides a water-based hand feeling rubber coating, which comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 100:
the component A comprises the following components in percentage by mass:
preferably, the aqueous self-extinction polyurethane dispersion is an aqueous self-extinction polyurethane dispersion formed by self-emulsification of polymer polyol and small molecular polyol, aqueous self-extinction polyurethane molecules, polyisocyanate (mainly IPDI, TDI and HDI) and introduced hydrophilic monomers.
The waterborne self-extinction polyurethane dispersoid is selected in the formula, dispersoid particles with different particle diameters (generally the particle diameter is between 1.0 and 10 mu m) and certain elasticity are introduced into the coating, the particles with different particle diameters are mutually fused to form a continuous rough surface in the film forming process, the diffuse reflection of the coating is increased to obtain the extinction performance, the appearance luster of the coating is very stable, the coating is not influenced by the change of external construction conditions, and the storage stability is good. The Weinuohua chemical W8930 is preferred.
Preferably, the aqueous polyester-polycarbonate polyurethane polyol dispersion is an aqueous polyester-polycarbonate polyurethane polyol dispersion modified by polyester and polycarbonate. Preferably from the Bayer Process
U 2757。
Preferably, the aqueous hand feeling auxiliary agent is a special emulsified microemulsion of nonionic polyamino silicone. Preferably from West chemical XR-301.
Preferably, the aqueous thickener is a polyether polyurethane associative aqueous thickener.
Preferably, the aqueous leveling agent is a siloxane aqueous leveling agent or an alkyl vinyl ether copolymer aqueous leveling agent.
Preferably, the aqueous defoaming agent is a silicone aqueous defoaming agent.
Preferably, the aqueous isocyanate is a hydrophilic aliphatic polyisocyanate of hexamethylene diisocyanate.
In a second aspect of the present invention, a preparation method of the above water-based rubber coating with hand feeling is provided, which comprises the following steps:
the components are respectively weighed according to the proportion of the component A, and then the components are uniformly mixed in sequence.
In a third aspect of the present invention, there is provided a method for using the above water-based rubber coating with hand feeling, comprising the steps of:
according to the boiling oil proportion: and (2) component A: the component B comprises deionized water = 100; and then drying the workpiece.
Preferably, the coating thickness is 20-25 μm.
Preferably, the pretreatment is to perform oil removal and dust removal treatment on the workpiece.
Preferably, the drying temperature of the drying treatment is 70-80 ℃, and the drying time is 30-40min.
More preferably, the drying treatment method includes oven drying or tunnel drying.
Preferably, the coating mode comprises spraying, knife coating, brush coating and rolling coating.
The invention has the following beneficial effects:
the invention combines the components of aqueous self-extinction polyurethane dispersoid, aqueous polyester polycarbonate polyurethane polyol dispersoid, aqueous hand feeling auxiliary agent, aqueous isocyanate and the like. The water-based hand-feeling rubber coating has the characteristics of excellent hand feeling, good scratch resistance, good alcohol wiping resistance, good adhesive force, good gloss uniformity, good storage stability and the like.
The use method of the water-based hand feeling rubber coating comprises the following steps of: the component A comprises: the component B is deionized water =100, and the paint can be coated on the surface of a pretreated workpiece after being diluted by 30 parts, and the workpiece after being coated can be obtained after being dried, so that the use method is simple and convenient, and is convenient for construction and industrial application. In addition, the water-based hand feeling rubber coating disclosed by the invention can be crosslinked and cured at low temperature, so that the emission of an organic solvent can be reduced, the air pollution is reduced, and the water-based hand feeling rubber coating is safe to use, environment-friendly and good in application property. In addition, the water-based hand-feeling rubber coating has non-flammable fire resistance, can effectively reduce the occurrence of fire, is safer in production, storage and transportation, and is convenient to use.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments. The scope of the invention is not limited by the following detailed description.
The water-based hand feeling rubber coating provided by the invention can be widely applied to the surface treatment process of plastic electronics, metals and woodware. The water-based hand-feeling rubber coating provided by the invention has the characteristics of excellent hand feeling, good scratch resistance, good alcohol wiping resistance, good adhesive force, good gloss uniformity, good storage stability and the like. Therefore, the embodiment of the invention provides the water-based rubber coating with hand feeling.
In the embodiment of the invention, preferably, the aqueous self-extinction polyurethane dispersion is selected from aqueous self-extinction polyurethane dispersions which are prepared by self-emulsification of polymer polyol and micromolecular polyol and aqueous self-extinction polyurethane molecules in the Weinuohua chemical industry W8930, and polyisocyanates mainly selects IPDI, TDI and HDI and introduces hydrophilic monomers, the innovation points are that dispersion particles with different particle sizes (generally the particle size is 1.0-10 um) and certain elasticity are introduced, the particles with different particle sizes are mutually fused to form a continuous rough surface in the film forming process, the diffuse reflection of the coating is increased to obtain the extinction performance, the generated beneficial effects are that the appearance gloss of the coating is very stable, the coating is not influenced by external construction condition change, the storage stability is good, no extinction powder is required to be added in the production process of the aqueous self-extinction polyurethane dispersion to provide the aqueous hand feeling rubber coating for extinction, the dust pollution in the production process is avoided, and simultaneously, the hydroxyl in the aqueous self-extinction polyurethane dispersion and the reaction group in the aqueous isocyanate are subjected to crosslinking reaction, so that the adhesion and the scratch resistance of the coating are increased.
In the embodiment of the present invention, preferably, the aqueous polyester-polycarbonate-polyurethane polyol dispersion is selected from Bayer
U2757 is polyester and polycarbonate modified waterborne polyester polycarbonate polyurethane polyol dispersoid, and the alcohol wiping resistance and the scratch resistance of the coating can be improved through polyester polycarbonate modified polyurethane.
In the embodiment of the invention, the water-based hand feeling auxiliary agent is preferably selected from West chemical XR-301 which is a non-ionic and polyamino silicone special emulsified microemulsion. The water-based hand feeling auxiliary agent is a non-ionic and polyamino silicone special emulsified microemulsion. The addition of the water-based hand feeling auxiliary agent can endow the coating with excellent hand feeling, prevent surface adhesion and improve dry and wet wiping capability.
In the embodiment of the present invention, preferably, the aqueous thickener is selected from hamming 299 which is polyether polyurethane associative aqueous thickener. The addition of the water-based thickener can improve the viscosity of the water-based hand-feeling rubber coating, provide strong shear thinning characteristic, and have excellent sag resistance and anti-settling property.
In the embodiment of the present invention, preferably, the aqueous leveling agent is selected from BYK333 which is a siloxane aqueous leveling agent and an alkyl vinyl ether copolymer aqueous leveling agent. The water-based leveling agent is a common paint auxiliary agent, can promote the paint to form a flat, smooth and uniform coating film in the drying film-forming process, can effectively reduce the surface tension of the paint, improve the leveling property, the wettability and the uniformity of the paint, improve the permeability of the paint, reduce spots and stains generated during brushing, improve the coverage property and enable the film to be formed uniformly and naturally. The siloxane and alkyl vinyl ether copolymer has good surface state control capability, can effectively improve the compatibility of the aqueous handfeel rubber coating, has the capabilities of reducing surface tension and controlling surface flow, and has the effects of increasing the slip, resisting shrinkage cavities and resisting adhesion.
In the embodiment of the present invention, the aqueous defoaming agent is preferably selected from digao 902w, which is a silicone aqueous defoaming agent. The water-based defoaming agent is used for inhibiting and eliminating foam, and the organic silicon defoaming agent generally comprises polydimethylsiloxane and the like, and has high defoaming speed and good foam inhibiting effect at normal temperature. The water-based defoaming agent applied in the embodiment of the invention can effectively improve the stability of the water-based hand feeling rubber coating.
In the embodiment of the invention, the waterborne isocyanate is preferably selected from Bayer XP-2655 which is hydrophilic aliphatic polyisocyanate of hexamethylene diisocyanate. The water-based isocyanate is a cross-linking agent of the water-based hand feeling rubber coating, has moderate hydrophilicity and balance between functionality, so that the water-based hand feeling rubber coating has the characteristics of quick drying and quick hardening, and the formed coating has high cross-linking density and excellent chemical resistance.
The present invention will be described in further detail with reference to the following examples, but it should not be construed that the scope of the above subject matter is limited to the following examples. All the technologies realized based on the above contents of the present invention belong to the scope of the present invention. Except as otherwise indicated, the following examples were carried out using conventional techniques.
Example 1
The embodiment provides a water-based rubber coating with handfeel and a preparation method thereof. Water-based hand feeling rubber coating: the component A is prepared by mixing the following raw materials in percentage by mass uniformly in sequence:
example 2
The embodiment provides a water-based hand feeling rubber coating and a preparation method thereof. Water-based hand feeling rubber coating: the component A is prepared by mixing the following raw materials in percentage by mass uniformly in sequence:
example 3
The embodiment provides a water-based hand feeling rubber coating and a preparation method thereof. Water-based hand feeling rubber coating: the component A is prepared by mixing the following raw materials in percentage by mass uniformly in sequence:
comparative example 1
The embodiment provides a water-based rubber coating with handfeel and a preparation method thereof. Water-based hand feeling rubber coating: the component A is prepared by mixing the following raw materials in percentage by mass uniformly in sequence:
comparative example 2
The embodiment provides a water-based rubber coating with handfeel and a preparation method thereof. Water-based hand feeling rubber coating: the component A is prepared by mixing the following raw materials in percentage by mass uniformly in sequence:
comparative example 3
The embodiment provides a water-based hand feeling rubber coating and a preparation method thereof. Water-based hand feeling rubber coating: the component A is prepared by mixing the following raw materials in percentage by mass uniformly in sequence:
comparative example 4
The embodiment provides a water-based rubber coating with handfeel and a preparation method thereof. Water-based hand feeling rubber coating: the component A is prepared by mixing the following raw materials in percentage by mass uniformly in sequence:
comparative example 5
The embodiment provides a water-based rubber coating with handfeel and a preparation method thereof. Water-based hand feeling rubber coating: the component A is prepared by mixing the following raw materials in percentage by mass uniformly in sequence:
comparative example 6
The rubber coating prepared in the above examples and comparative examples was used as follows:
according to the boiling oil proportion: and (2) component A: the component B is deionized water = 100; and then drying the workpiece by using an oven at the drying temperature of 70-80 ℃ for 30-40min to obtain a coated workpiece, wherein the thickness of the coating on the coated workpiece is 20-25 mu m.
The properties of the aqueous rubber coating with handle prepared in the above examples were tested according to the following criteria,
| test items | Test standard |
| Adhesion force | GB/T9286-1998 |
| Scratch resistance | GB/T9279-2007 |
| Alcohol-resistant | GB/T23989-2009 |
| Degree of gloss | GB/T4893.6-1985 |
| Storage stability | GB-T6753.3-1986 |
The results of the performance tests are shown in the table below.
Through the comparison of the performance tests, the aqueous rubber coating with hand feeling prepared by jointly using the aqueous self-extinction polyurethane dispersion and the aqueous polyester polycarbonate polyurethane polyol dispersion and the hand feeling auxiliary agent through the mutual coordination of the components in the embodiment 1, the embodiment 2 and the embodiment 3 has the characteristics of excellent hand feeling, good scratch resistance, good alcohol wiping resistance, good adhesive force, good gloss uniformity, good storage stability and the like. Comparative example 1, without the addition of an aqueous polyester polycarbonate polyurethane polyol dispersion, the coating had a marked deviation in the resistance to wiping with alcohol and in the scratch resistance. Comparative example 2 had no significant deviation in coating hand with the addition of the hand aid. Comparative example 3 reduction of the amount of aqueous polyester polycarbourethane polyol dispersion the coating resists wiping with alcohol and has a slightly insufficient scratch resistance. Comparative example 4 the amount of the aqueous polyester-polycarbonate-polyurethane polyol dispersion is increased, the cross-linking density of the coating is increased, the hand feeling performance is affected, and the hand feeling performance is reduced. Comparative example 5 uses a conventional hand feeling aid, and the coating had a biased hand feeling property. Comparative example 6 employs a conventional aqueous polyurethane dispersion with an aqueous matting agent, and the coating had a deviation in hand feel, resistance to wiping with alcohol, scratch resistance, gloss uniformity, and storage stability.
In summary, the aqueous self-extinction polyurethane dispersion and the aqueous polyester-polycarbonate polyurethane polyol dispersion in the components of the invention are particularly important, and the excellent technical effects of the invention can not be obtained by omitting, replacing or changing the dosage.
The technical contents of the present invention are further illustrated by the examples, so that the reader can easily understand the technical contents, and the embodiments of the present invention are not limited thereto, and any technical extensions or re-creation made according to the present invention are protected by the present invention.
Claims (9)
1. The water-based rubber coating with hand feeling is characterized by comprising a component A and a component B, wherein the mass ratio of the component A to the component B is 100:
the component A comprises the following components in percentage by mass:
the component B comprises: 100 percent of water-based isocyanate.
2. The water-based rubber coating with handle as claimed in claim 1, wherein the water-based self-extinction polyurethane dispersion is prepared by self-emulsification of polymer polyol and small molecule polyol with water-based self-extinction polyurethane molecule, polyisocyanate and introduced hydrophilic monomer.
3. The aqueous rubber coating according to claim 1, wherein the aqueous polyester-polycarbonate polyurethane polyol dispersion is an aqueous polyester-polycarbonate polyurethane polyol dispersion modified with polyester or polycarbonate.
4. The aqueous feel rubber coating of claim 1 wherein said aqueous feel aid is a nonionic polyaminosilicone specially emulsified microemulsion.
5. The aqueous feel rubber coating of claim 1 wherein said aqueous thickener is a polyether polyurethane associative aqueous thickener.
6. The aqueous rubber coating with hand feeling of claim 1, wherein the aqueous leveling agent is a siloxane aqueous leveling agent or an alkyl vinyl ether copolymer aqueous leveling agent.
7. The aqueous rubber coating according to claim 1, wherein the aqueous defoaming agent is a silicone-based aqueous defoaming agent.
8. The aqueous rubber coating according to claim 1, wherein the aqueous isocyanate is a hydrophilic aliphatic polyisocyanate of hexamethylene diisocyanate.
9. Use of the aqueous rubber coating according to any of claims 1 to 8, characterized in that it comprises the following steps:
according to the boiling oil proportion: the component A comprises: the component B is deionized water = 100; and then drying the workpiece to obtain a coated workpiece, wherein the thickness of the coating on the coated workpiece is 20-25 mu m.
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