CN108997925B - Colored dual-curing UV (ultraviolet) coating for automotive upholstery - Google Patents
Colored dual-curing UV (ultraviolet) coating for automotive upholstery Download PDFInfo
- Publication number
- CN108997925B CN108997925B CN201811090758.3A CN201811090758A CN108997925B CN 108997925 B CN108997925 B CN 108997925B CN 201811090758 A CN201811090758 A CN 201811090758A CN 108997925 B CN108997925 B CN 108997925B
- Authority
- CN
- China
- Prior art keywords
- parts
- acrylic resin
- polyurethane acrylic
- weight
- aliphatic polyurethane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
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
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention discloses a colored dual-curing UV (ultraviolet) coating for automotive upholsteries, belonging to the field of coating preparation. The invention relates to a colored dual-curing UV (ultraviolet) coating for automotive upholsteries, which comprises the following raw materials in parts by weight: 20-30 parts of tetra-functional hydroxyl polyurethane acrylic resin; 16-30 parts of four-part aliphatic polyurethane acrylic resin; 8-12 parts of three-part aliphatic polyurethane acrylic resin; 10-15 parts of six-membered aliphatic polyurethane acrylic resin; 10-15 parts of TMPTA monomer; 3-9 parts of an ultraviolet initiator; 0.5-1 part of a leveling agent; 3-5 parts of black paste; 5-20 parts of ethyl acetate; 10-20 parts of butyl acetate. The invention overcomes the defects that the automotive upholstery needs to be sprayed twice and the production efficiency is lower in the prior art, has good adhesive force to ABS, PC, ABS + PC and painted plastic base materials, and the formed paint film has the performances of solvent resistance, water resistance and the like, can improve the current secondary spraying effect, saves energy and improves the production efficiency.
Description
Technical Field
The invention relates to the technical field of coating preparation, in particular to a colored dual-curing UV coating for automotive interior parts.
Background
Nowadays, with the enhancement of environmental awareness and the development of polymer science of people, the demand for environment-friendly coatings is higher and higher, and domestic enterprises are gradually tightening the indexes of VOC content of the coatings for searching competitive advantages, and developing and applying the environment-friendly coatings. The UV paint belongs to an environment-friendly coating and has the advantages of high curing speed and high working efficiency, so that the research and development of the automotive interior UV gloss oil series paint are in line with the market trend, and the application of the automotive interior UV gloss oil series paint in automotive interiors has extremely wide prospect. The requirement on high-end automobile interior parts is higher and higher, and the prior 2-time spraying of black primer and UV paint is improved, so that the energy is saved, and the production efficiency is improved.
Chinese patent application No.: 2011101423809, filing date: in 2011, 5, 30 months and 30 days, the invention and creation name is as follows: the application discloses an environment-friendly dual-curing vacuum coating primer special for automobile hubs, which is prepared from the following components in percentage by mass: 25-35% of polyurethane acrylate containing isocyanate, 5-10% of aliphatic polyurethane diacrylate, 5-10% of novolac epoxy acrylate, 10-20% of aliphatic epoxy acrylate, 20-35% of reactive diluent, 1-5% of photoinitiator and 0.1-1% of auxiliary agent. The primer is energy-saving and environment-friendly, has strong adhesive force on the metal surface, excellent leveling property and high glossiness; the covering power is good, and the defects of the material can be well covered only by one layer of primer; the adhesive has good adhesive force with both the hub material and the vacuum coating layer; no surface abnormality after baking for 2h at 170 ℃; moreover, the coating also has recoating performance.
Also as in chinese patent application No.: 2012104593168, filing date: 11/15/2012, the name of invention creation is: the application case of the dual-cured vacuum plating UV coating finish paint is formed by mixing the following components: by weight ratio, 20-50 parts of hydroxyl-containing high functional group urethane acrylate, 20-40 parts of hydroxyl-containing low functional group urethane acrylate, 3-8 parts of initiator, 2-5 parts of isocyanate, 0-0.5 part of wetting dispersant, 0-1 part of flatting agent and 1-10 parts of inorganic filler; 10-30 parts of a solvent; the polyurethane adhesive is prepared by mixing hydroxyl high-functional group polyurethane acrylate and hydroxyl low-functional group polyurethane acrylate serving as main components, photoinitiator and isocyanate serving as curing agents, wetting dispersant and flatting agent serving as auxiliary materials, inorganic filler and solvent serving as a viscosity regulator.
In summary, the above applications all relate to cured coatings, but the above applications employ vacuum plating with colorless primers, so that the production of colored primers is difficult to achieve, and the product performance still deserves further improvement.
Disclosure of Invention
1. Technical problem to be solved by the invention
The invention aims to overcome the defects that the automotive upholstery needs to be sprayed twice and the production efficiency is low in the prior art, and provides a colored dual-curing UV coating for the automotive upholstery, which has good adhesive force to ABS, PC, ABS + PC and a painted plastic base material, and a formed coating film has the performances of solvent resistance, water resistance and the like, can improve the current secondary spraying effect, saves energy and improves the production efficiency.
2. Technical scheme
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the invention relates to a colored dual-curing UV coating for automotive upholsteries, which comprises the following raw materials in parts by weight:
furthermore, the six-membered aliphatic polyurethane acrylic resin is a polyurethane acrylic oligomer; the three-part aliphatic polyurethane acrylic resin and the four-part aliphatic polyurethane acrylic resin are aliphatic polyurethane acrylate oligomers; the tetrafunctional hydroxyl polyurethane acrylic resin is a polyurethane acrylic oligomer containing hydroxyl; the TMPTA monomer is a trifunctional acrylic oligomer.
Furthermore, the four-part aliphatic polyurethane acrylic resin comprises the following raw materials in parts by weight:
8-15 parts of four-part aliphatic polyurethane acrylic resin A;
8-15 parts of four-part aliphatic polyurethane acrylic resin B.
Furthermore, the ultraviolet initiator comprises the following raw materials in parts by mass:
1841-3 parts of an ultraviolet initiator;
1-3 parts of ultraviolet initiator TPO;
and 9071-3 parts of an ultraviolet initiator.
Further, the leveling agent is a BYK-333 type leveling agent.
Furthermore, the black paste is a high pigment carbon black milled paste, wherein the content of carbon black is not higher than 10%.
Further, the preparation method comprises the following steps:
step one, under the condition of keeping out of the sun, uniformly mixing tetrafunctional hydroxyl polyurethane acrylic resin, four-official aliphatic polyurethane acrylic resin, three-official aliphatic polyurethane acrylic resin, six-official aliphatic polyurethane acrylic resin and TMPTA monomers according to a formula proportion under the stirring condition to obtain a mixture A;
stirring 5-10 parts by weight of butyl acetate, adding 3-9 parts by weight of ultraviolet initiator under the stirring condition, and uniformly stirring to obtain a mixture B;
adding the mixture B into the mixed mixture A under the stirring condition, adding 0.5-1 part by weight of flatting agent, and stirring for 10-20min to obtain a mixture C;
step four, adding 3-5 parts by weight of black paste into the mixture C under the stirring condition, and uniformly stirring for 10-20 min; obtaining a mixture D;
and step five, adding 5-20 parts by weight of ethyl acetate and 5-10 parts by weight of butyl acetate into the mixture D under the stirring condition, uniformly stirring, adjusting the viscosity to 20-30S (25 ℃, NK-2), and filtering to obtain the product.
Further, the stirring condition in the first step is 600-; the stirring conditions in the rest steps are 300-700 r/min.
The colored dual-curing UV paint film for the automotive upholstery is formed by adopting the paint.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following remarkable effects:
(1) the colored dual-curing UV coating for the automotive upholstery improves the two-time spraying mode of the conventional black primer and the UV coating, thereby saving energy and improving production efficiency, and a paint film formed by the coating of the colored dual-curing UV coating can realize complete curing and crosslinking, has no residual solvent and no after tack, has good dispersibility, moderate leveling property and moderate thixotropy when being sprayed, ensures that the coating is uniform, has no obvious orange peel, no pinhole bubble and no impurity point, has a full paint surface, has good glossiness, and meets the production requirement standard.
(2) According to the colored dual-curing UV coating for the automotive upholstery, the cross-linking density after curing is greatly higher than that of a hot-baking coating, the performance indexes of the coating in all aspects of hardness, wear resistance, acid and alkali resistance, salt mist resistance, gasoline resistance and other organic solvents are high, and particularly the coating is plump, glossy, smooth in surface, fast in UV coating curing speed and high in production efficiency.
Drawings
FIG. 1 is a schematic flow chart of a preparation method of a colored dual-curing UV coating for automotive upholsteries, disclosed by the invention;
fig. 2 is a schematic flow chart of a using method of the colored dual-curing UV coating for automotive upholsteries, disclosed by the invention.
Detailed Description
For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The present invention will be further described with reference to the following examples.
Example 1
As shown in fig. 1 and fig. 2, the colored dual-curing UV coating for automotive upholsteries of the embodiment comprises the following raw materials in parts by weight:
20 parts of tetra-functional hydroxyl polyurethane acrylic resin;
18 parts of four-part aliphatic polyurethane acrylic resin;
wherein the four-part aliphatic polyurethane acrylic resin comprises: 9 parts by weight of four-part aliphatic polyurethane acrylic resin A and 9 parts by weight of four-part aliphatic polyurethane acrylic resin B;
wherein the ultraviolet initiator comprises 2 parts by weight of an ultraviolet initiator A, 1.5 parts by weight of an ultraviolet initiator B and 2 parts by weight of an ultraviolet initiator C;
in the embodiment, the six-membered aliphatic polyurethane acrylic resin is a polyurethane acrylic oligomer; the three-part aliphatic polyurethane acrylic resin and the four-part aliphatic polyurethane acrylic resin are aliphatic polyurethane acrylate oligomers; the tetrafunctional hydroxyl polyurethane acrylic resin is a polyurethane acrylic oligomer containing hydroxyl; the TMPTA monomer is a trifunctional acrylic oligomer.
In this embodiment, a product of type EB8210 from the new resin (shanghai) co.ltd. can be selected for the tetra-functional hydroxyl urethane acrylate resin, a product of type CN8000 from sartomer guangzhou chemical co.ltd. is selected for the tetra-functional aliphatic urethane acrylate resin a, a product of type CN8007 from sartomer guangzhou chemical co.ltd. is selected for the tetra-functional aliphatic urethane acrylate resin B, the tetra-functional aliphatic urethane acrylate resin a contributes to enhancing adhesion to a substrate, the tetra-functional aliphatic urethane acrylate resin B contributes to enhancing flexibility, and the two are compounded to realize performance balance of the product; the three-official aliphatic polyurethane acrylic resin is a model UV-787 product of Jiuyi commercial Limited, Guangzhou, the six-official aliphatic polyurethane acrylic resin is a model GD-400 product of Guangxin chemical Limited, Shenzhen, and the TMPTA monomer is a model EM231 product of Changxing materials industries, Inc.
In the embodiment, the leveling agent is a BYK-333 type leveling agent; BYK-333 is an organic silicon leveling agent, so that the leveling property of the whole system is better and smoother. The black paste is a paste prepared by grinding high-pigment carbon black, wherein the content (weight) of the carbon black is 10%, and the curing degree of the coating is affected by the content (weight) of the carbon black.
In this embodiment, the uv initiator a is BASF IRGACURE 184 photoinitiator, the uv initiator B is BASF IRGACURE TPO photoinitiator, and the uv initiator C is BASF IRGACURE 907 photoinitiator. The BASF IRGACURE 907 photoinitiator is a free radical type solid photoinitiator, is mainly used together with a mono-functional or multi-functional vinyl monomer and an oligomer for UV curing of unsaturated prepolymers (such as acrylate), and is particularly suitable for a colored UV curing system. In the embodiment, three photoinitiators are used together, so that ultraviolet rays with different wave bands in an ultraviolet region can be absorbed, the UV coating can be cured more completely, and a better surface property is provided for a paint film. In the embodiment, different ultraviolet initiators are adopted for matching the curing problem of a colored paint film, and meanwhile, dual-curing resin (UV resin with hydroxyl) and single-curing UV resin (UV resin without hydroxyl) are adopted for matching the curing problem of different illuminance, so that the product achieves better performance; and in the place that the ultraviolet light is difficult to shine, can effectively compensate polymerization that photoinitiator initiation is few through the reaction of curing agent and the hydroxyl of dual curing resin, guarantee the aridity of here to make the product reach preferred performance.
In the embodiment, the weight part of the tetrafunctional hydroxyl polyurethane acrylic resin is not less than half of the sum of the weight parts of the four-official aliphatic polyurethane acrylic resin, the three-official aliphatic polyurethane acrylic resin and the six-official aliphatic polyurethane acrylic resin; the weight ratio of the three aliphatic polyurethane acrylic resins to the six aliphatic polyurethane acrylic resins is 1: 1-1.5, in the embodiment, the tetra-functional hydroxyl polyurethane acrylic resin is used for providing the adhesive force and the surface leveling property of the matrix, the four aliphatic polyurethane acrylic resins provide the flexibility of the paint film, the six aliphatic polyurethane acrylic resins provide the reaction curing speed and the hardness of the paint film, the black slurry endows the paint film with the color effect, the ultraviolet initiator is used for initiating the polymerization of the monomers and the polyester, the leveling agent provides the leveling property of the paint film, and the ethyl acetate and the butyl acetate are used as solvents to provide the paint with better fluidity and solvent release property; the components are well matched to realize a good and stable curing effect of the coating, so that the one-time coating and color adding are ensured, and the traditional two-time spraying process is improved.
The coating of this example was prepared as follows:
step one, under the condition of keeping out of the sun, uniformly mixing the tetrafunctional hydroxyl polyurethane acrylic resin, the four-membered aliphatic polyurethane acrylic resin, the three-membered aliphatic polyurethane acrylic resin, the six-membered aliphatic polyurethane acrylic resin and the TMPTA monomer according to the formula ratio under the stirring condition of 600 plus materials and 800 revolutions per minute to enable the resin with high viscosity to be mixed, and stirring for 10-20min to obtain a mixture A, wherein the stirring condition is 600 revolutions per minute in the embodiment; stirring for 10 min;
step two, stirring 5-10 parts by weight (specifically 8.5 parts by weight in this embodiment, which is half of the weight of butyl acetate in the formulation), adding 3-9 parts by weight (specifically 5.5 parts by weight in this embodiment) of ultraviolet initiator under the stirring condition of 300 revolutions per minute and 700 revolutions per minute, and uniformly stirring for 10-20min to obtain a mixture B; in the present example, the stirring conditions were 300 rpm, to prevent the initiator having a low viscosity from being thrown away; stirring for 15 min; wherein the first step and the second step have no requirement on the sequence;
step three, adding the mixture B into the mixed mixture A under the stirring condition of 300-700 r/min, adding 0.5-1 part by weight (specifically, 0.5 part by weight in the embodiment) of a leveling agent, and stirring for 10-20min to obtain a mixture C; specifically, in this example, the stirring condition was 300 rpm; stirring for 15 min;
step four, adding 3-5 parts by weight (specifically 3 parts by weight in the embodiment) of black paste into the mixture C under the stirring condition of 300-700 r/min, and uniformly stirring for 10-20 min; obtaining a mixture D; specifically, in this example, the stirring condition was 300 rpm; stirring for 15 min;
step five, adding 5-20 parts by weight (specifically 5 parts by weight in the embodiment) of ethyl acetate and 5-10 parts by weight of butyl acetate (specifically 8.5 parts by weight in the embodiment, namely the other half of the butyl acetate in the formula) into the mixture D under the stirring condition of 300-700 r/min, uniformly stirring and adjusting the viscosity to 20-30S (25 ℃, NK-2), and filtering by adopting a 400-sand 500-mesh filter screen, specifically 300 r/min in the embodiment; the filter screen is 400 meshes.
The preparation is carried out under the condition of keeping out of the sun, so that the action efficiency of the ultraviolet absorbent can be fully improved, and the ultraviolet absorbent is prevented from absorbing ultraviolet light in the preparation process of the coating, so that the quality of the UV coating and the film-forming property of a paint film are influenced by the curing and crosslinking of a preparation system in a semi-finished product state; the ultraviolet initiator must be dissolved by butyl acetate and then added into the reaction system to ensure that the ultraviolet initiator is uniformly dispersed in the system.
The conventional operation of painting the automotive interior part in the industry at present is to brush a layer of black primer and then a layer of high gloss finish paint to present the effect of the high gloss black paint, the embodiment only needs a layer of high gloss black paint, the conventional process means is difficult to overcome the problems of poor curing degree and unstable performance of black UV, and the colored dual-curing UV paint film of the automotive interior part of the embodiment is formed by adopting the paint of the embodiment, integrates the advantages of UV and dual-component PU to achieve the purpose of coating the automotive interior part in a special shape, greatly improves the product performance and appearance decoration, improves the coloring effect of the UV paint of the embodiment by one-time coating, improves the two-time spraying mode of the conventional black primer and the UV paint, thereby saving energy and improving the production efficiency, and the paint film formed by the paint coating of the embodiment can realize complete curing crosslinking without residual solvent and no back adhesion, the coating has good dispersibility, moderate leveling property and moderate thixotropy when being sprayed, so that the coating is uniform, no obvious orange peel exists, no pinhole bubbles exist, no impurity points exist, the paint surface has good leveling property and good glossiness, and the production requirement standard is met; the embodiment effectively utilizes the dual-curing resin to improve the curing effect of the paint film, and simultaneously utilizes the ultraviolet initiators with different wavelengths to respectively initiate the curing of the surface layer, the middle layer and the bottom layer of the paint film, so that the curing effect of the paint film is greatly improved, and the one-coat coloring can be realized.
The paint and the paint film thereof prepared by the formula and the method of the embodiment have good water resistance, and the matching use of the ethyl acetate and the butyl acetate ensures the solubility of all raw materials and improves the drying property of construction.
The cross-linking density of the UV coating after curing is greatly higher than that of a hot-drying coating, the performance indexes of the coating in all aspects of hardness, wear resistance, acid and alkali resistance, salt mist resistance, gasoline resistance and other organic solvents are very high, particularly, the coating is plump, glossy, smooth in surface, fast in UV paint curing speed and high in production efficiency, the curing mechanism belongs to a free radical chain reaction, cross-linking and curing are completed instantly, the designed production line speed can reach 100m/min at most, workpieces can be packaged after being off line, and the efficiency of using the UV coating is more than 15 times that of the traditional drying coating; energy is saved, the UV coating is cured by ultraviolet light, the energy consumption of a general production line is within 50k W, and the energy consumption is about 1/5 of the traditional drying type thermosetting coating.
The VW TL226 which is popular in the market at present is the most strict standard in the automobile interior trim industry, most automobile interior trim manufacturers equally adopt the VW TL226 standard to detect the performance of paint at present, and the colored dual-curing UV coating for the automobile interior trim provided by the embodiment can completely meet the requirements of the VW TL226 standard through multiple performance tests.
The use method of the colored dual-curing UV coating for the automotive interior part comprises the following steps:
s1, uniformly mixing and blending the UV coating, the UV coating curing agent and the UV coating diluent according to the weight ratio of 5: 1: 2-3, spraying the mixture on a substrate or a primer layer, leveling and drying at normal temperature for 5-10min, and then keeping the temperature in an environment of 60-80 ℃ for 5-15 min; specifically, in the embodiment, the weight ratio of the UV coating, the UV coating curing agent and the UV coating diluent is 5: 1: 2, the leveling and drying are carried out for 5min at normal temperature, and the drying is carried out for 10min at the temperature of 60 ℃;
s2, carrying out UV curing, wherein the UV exposure energy is 1200-1800MJ/cm2Specifically, in the present embodiment, the UV exposure energy is 1200MJ/cm2。
The UV coating diluent in the embodiment comprises the following raw materials in parts by weight: 40-60 parts of ethyl acetate; 40-60 parts of butyl acetate; the preparation method comprises the following steps: mixing and stirring 40-60 parts by weight of butyl acetate and 40-60 parts by weight of ethyl acetate uniformly for 10-20 minutes; specifically, in this embodiment, the UV paint thinner includes 40 parts of ethyl acetate and 40 parts of butyl acetate, and is prepared by mixing and stirring uniformly for 10 minutes.
The UV coating curing agent in the embodiment comprises the following raw materials in parts by weight: desmodur N339072-78 parts of scientific Polymer (China) Co., Ltd; 22-28 parts of butyl acetate; the preparation method comprises the following steps: mixing 22-28 parts by weight of butyl acetate and 72-78 parts by weight of Desmodur N3390 of Corsai Polymer (China) Co., Ltd, and stirring uniformly for 10-20 minutes; specifically, in the embodiment, the UV coating curing agent comprises Desmodur N339072 parts; 22 parts of butyl acetate, and the preparation method comprises the step of uniformly mixing and stirring for 10 minutes.
The colored dual-curing UV coating for the automotive upholstery can be suitable for beautifying and protecting ABS or PC or ABS + PC base materials, and endows piano black highlight effect on the surface of a paint film.
Example 2
The colored dual-curing UV coating for automotive upholsteries of the embodiment is basically the same as in embodiment 1, except that the coating in the embodiment comprises the following raw materials in parts by weight:
20 parts of tetra-functional hydroxyl polyurethane acrylic resin;
25.9 parts of four-part aliphatic polyurethane acrylic resin;
wherein the four-part aliphatic polyurethane acrylic resin comprises: 10.9 parts by weight of four-membered aliphatic polyurethane acrylic resin A and 15 parts by weight of four-membered aliphatic polyurethane acrylic resin B;
wherein the ultraviolet initiator comprises 1 part by weight of ultraviolet initiator A, 2 parts by weight of ultraviolet initiator B and 2 parts by weight of ultraviolet initiator C;
the preparation method of the coating is basically the same as that of example 1, except that in the first step of the present example, the stirring condition is 800 rpm, and the stirring time is 15 min; in the other steps, the stirring condition is 700 r/min, the stirring time is 10min, and in the fifth step, a filter screen is used and is 500 meshes; in this embodiment, the black paste is a high pigment carbon black milled paste, wherein the content (weight) of the carbon black is 8%.
The use method of the colored dual-curing UV coating for the automotive interior part comprises the following steps:
s1, uniformly mixing and blending the UV coating, the UV coating curing agent and the UV coating diluent according to the weight ratio of 5: 1: 3, spraying the mixture on a substrate or a primer layer, leveling and drying at normal temperature for 10min, and then keeping the mixture at 80 ℃ for 15 min;
s2, carrying out UV curing with UV exposure energy of 1800MJ/cm2。
The UV coating diluent in the embodiment comprises the following raw materials in parts by weight: 60 parts of ethyl acetate; 60 parts of butyl acetate; the preparation method comprises the following steps: and (3) mixing and stirring 60 parts by weight of butyl acetate and 60 parts by weight of ethyl acetate uniformly for 20 minutes.
The UV coating curing agent in the embodiment comprises the following raw materials in parts by weight: desmodur N339078 parts by Corsai Polymer (China) Co., Ltd; 28 parts of butyl acetate; the preparation method comprises the following steps: the preparation method comprises the following steps of mixing and uniformly stirring 28 parts by weight of butyl acetate and 78 parts by weight of Desmodur N3390 of Corsai polymer (China) Co., Ltd for 20 minutes.
Example 3
The colored dual-curing UV coating for automotive upholsteries of the embodiment is basically the same as in embodiment 1, except that the coating in the embodiment comprises the following raw materials in parts by weight:
25 parts of tetra-functional hydroxyl polyurethane acrylic resin;
20 parts of four-part aliphatic polyurethane acrylic resin;
wherein the four-part aliphatic polyurethane acrylic resin comprises: 12 parts by weight of four-part aliphatic polyurethane acrylic resin A and 8 parts by weight of four-part aliphatic polyurethane acrylic resin B;
wherein the ultraviolet initiator comprises 2 parts by weight of an ultraviolet initiator A, 1.3 parts by weight of an ultraviolet initiator B and 1 part by weight of an ultraviolet initiator C;
the preparation method of the coating is basically the same as that of example 1, except that in the first step of the present example, the stirring condition is 700 rpm, and the stirring time is 12 min; in the other steps, the stirring condition is 700 r/min, the stirring time is 20min, and in the fifth step, a filter screen is 450 meshes; in this embodiment, the black paste is a high pigment carbon black milled paste, wherein the content (weight) of the carbon black is 5%.
The use method of the colored dual-curing UV coating for the automotive interior part comprises the following steps:
s1, uniformly mixing and blending the UV coating, the UV coating curing agent and the UV coating diluent according to the weight ratio of 5: 1: 2.5, spraying the mixture on a substrate or a primer layer, leveling and drying at normal temperature for 8min, and then keeping the mixture at 70 ℃ for 10 min;
s2, carrying out UV curing with the UV exposure energy of 1500MJ/cm2。
The UV coating diluent in the embodiment comprises the following raw materials in parts by weight: 50 parts of ethyl acetate; 50 parts of butyl acetate; the preparation method comprises the following steps: and mixing and stirring 50 parts by weight of butyl acetate and 50 parts by weight of ethyl acetate uniformly for 15 minutes.
The UV coating curing agent in the embodiment comprises the following raw materials in parts by weight: desmodur N339075 parts by Corsai Polymer (China) Co., Ltd; 25 parts of butyl acetate; the preparation method comprises the following steps: mixing 25 parts by weight of butyl acetate and 75 parts by weight of Desmodur N3390 of Corsai Polymer (China) Co., Ltd, and stirring uniformly for 15 minutes.
Example 4
The colored dual-curing UV coating for automotive upholsteries of the embodiment is basically the same as in embodiment 1, except that the coating in the embodiment comprises the following raw materials in parts by weight:
20 parts of tetra-functional hydroxyl polyurethane acrylic resin;
16 parts of four-part aliphatic polyurethane acrylic resin;
wherein the four-part aliphatic polyurethane acrylic resin comprises: 8 parts by weight of four-part aliphatic polyurethane acrylic resin A and 8 parts by weight of four-part aliphatic polyurethane acrylic resin B;
wherein the ultraviolet initiator comprises 1.5 parts by weight of ultraviolet initiator A, 1.2 parts by weight of ultraviolet initiator B and 1.5 parts by weight of ultraviolet initiator C;
example 5
The colored dual-curing UV coating for automotive upholsteries of the embodiment is basically the same as in embodiment 1, except that the coating in the embodiment comprises the following raw materials in parts by weight:
25 parts of tetra-functional hydroxyl polyurethane acrylic resin;
16 parts of four-part aliphatic polyurethane acrylic resin;
wherein the four-part aliphatic polyurethane acrylic resin comprises: 8 parts by weight of four-part aliphatic polyurethane acrylic resin A and 8 parts by weight of four-part aliphatic polyurethane acrylic resin B;
wherein the ultraviolet initiator comprises 1 part by weight of ultraviolet initiator A, 1 part by weight of ultraviolet initiator B and 1 part by weight of ultraviolet initiator C;
in this embodiment, the black paste is a high pigment carbon black milled paste, wherein the content (weight) of carbon black is 3%.
The following table 1 shows the raw material composition of the coating in the above examples.
Table 1 raw material composition of coating materials of examples
The following table 2 shows the composition of the coating materials for the comparative examples, and the preparation method and the using method thereof are substantially the same as those of the above examples.
Table 2 comparative example coating raw material composition
The coatings obtained in the above examples and comparative examples were used, and the properties of the formed paint films were measured, and the results are shown in Table 3.
TABLE 3 film property test results
The appearance of the paint film in the performance detection is to evaluate whether the formed film has surface flaws such as blistering, orange peel, shrinkage cavity, corrugation, miliaria and the like; the storage period is to evaluate whether the paint has abnormal conditions such as thickening, layering, gumming, discoloring, thickening and the like in the shelf life; the test standards for the properties of the above paint films are referred to the general VW TL226 standard. As can be seen from table 3, the colored dual-curing UV coating for automotive upholsteries prepared in this embodiment can completely meet the standard of VW TL226 of the public.
Example 6
The colored dual-curing UV coating for automotive upholsteries of the embodiment is basically the same as in embodiment 1, except that the coating in the embodiment comprises the following raw materials in parts by weight:
30 parts of tetra-functional hydroxyl polyurethane acrylic resin;
30 parts of four-part aliphatic polyurethane acrylic resin;
wherein the four-part aliphatic polyurethane acrylic resin comprises: 15 parts by weight of four-membered aliphatic polyurethane acrylic resin A and 15 parts by weight of four-membered aliphatic polyurethane acrylic resin B;
wherein the ultraviolet initiator comprises 3 parts by weight of an ultraviolet initiator A, 3 parts by weight of an ultraviolet initiator B and 3 parts by weight of an ultraviolet initiator C;
in this embodiment, the black paste is a high pigment carbon black milled paste, wherein the content (weight) of carbon black is 1%.
Example 7
The colored dual-curing UV coating for automotive upholsteries of the embodiment is basically the same as in embodiment 1, except that the coating in the embodiment comprises the following raw materials in parts by weight:
25 parts of tetra-functional hydroxyl polyurethane acrylic resin;
20 parts of four-part aliphatic polyurethane acrylic resin;
wherein the four-part aliphatic polyurethane acrylic resin comprises: 10 parts by weight of four-part aliphatic polyurethane acrylic resin A and 10 parts by weight of four-part aliphatic polyurethane acrylic resin B;
wherein the ultraviolet initiator comprises 2 parts by weight of an ultraviolet initiator A, 2 parts by weight of an ultraviolet initiator B and 2 parts by weight of an ultraviolet initiator C;
the present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.
Claims (6)
1. The utility model provides a colored dual cure UV coating of automotive interior spare which characterized in that: the feed comprises the following raw materials in parts by weight:
20-30 parts of tetra-functional hydroxyl polyurethane acrylic resin;
16-30 parts of four-part aliphatic polyurethane acrylic resin;
8-12 parts of three-part aliphatic polyurethane acrylic resin;
10-15 parts of six-membered aliphatic polyurethane acrylic resin;
10-15 parts of TMPTA monomer;
3-9 parts of an ultraviolet initiator;
0.5-1 part of a leveling agent;
3-5 parts of black paste;
5-20 parts of ethyl acetate;
10-20 parts of butyl acetate;
the weight part of the tetrafunctional hydroxyl polyurethane acrylic resin is not less than half of the sum of the weight parts of the four-official aliphatic polyurethane acrylic resin, the three-official aliphatic polyurethane acrylic resin and the six-official aliphatic polyurethane acrylic resin; and the weight ratio of the three-part aliphatic polyurethane acrylic resin to the six-part aliphatic polyurethane acrylic resin is 1: (1-1.5); the black paste is a paste prepared by grinding high-pigment carbon black, wherein the weight content of the carbon black is not higher than 10 percent;
six-membered aliphatic polyurethane acrylic resin is a polyurethane acrylic oligomer; the three-part aliphatic polyurethane acrylic resin and the four-part aliphatic polyurethane acrylic resin are aliphatic polyurethane acrylate oligomers; the tetrafunctional hydroxyl polyurethane acrylic resin is a polyurethane acrylic oligomer containing hydroxyl; the TMPTA monomer is a trifunctional acrylic oligomer; the four-part aliphatic polyurethane acrylic resin comprises the following raw materials in parts by weight: four-part aliphatic polyurethane acrylic resin A: 8-15 parts; four-part aliphatic polyurethane acrylic resin B: 8-15 parts; the four-part aliphatic polyurethane acrylic resin A is selected from a CN8000 product of the Shadoma Guangzhou chemical company, and the four-part aliphatic polyurethane acrylic resin B is selected from a CN8007 product of the Shadoma Guangzhou chemical company.
2. The colored dual-cure UV coating for the automotive interior according to claim 1, wherein: the ultraviolet initiator comprises the following raw materials in parts by mass:
1841-3 parts of an ultraviolet initiator;
1-3 parts of ultraviolet initiator TPO;
and 9071-3 parts of an ultraviolet initiator.
3. The colored dual-cure UV coating for the automotive interior according to claim 1, wherein: the leveling agent is a BYK-333 type leveling agent.
4. The colored dual-cure UV coating for the automotive interior according to claim 1, wherein: the preparation method comprises the following steps:
step one, under the condition of keeping out of the sun, uniformly mixing tetrafunctional hydroxyl polyurethane acrylic resin, four-official aliphatic polyurethane acrylic resin, three-official aliphatic polyurethane acrylic resin, six-official aliphatic polyurethane acrylic resin and TMPTA monomers according to a formula proportion under the stirring condition to obtain a mixture A;
stirring 5-10 parts by weight of butyl acetate, adding 3-9 parts by weight of ultraviolet initiator under the stirring condition, and uniformly stirring to obtain a mixture B;
adding the mixture B into the mixed mixture A under the stirring condition, adding 0.5-1 part by weight of flatting agent, and stirring for 10-20min to obtain a mixture C;
step four, adding 3-5 parts by weight of black paste into the mixture C under the stirring condition, and uniformly stirring for 10-20 min; obtaining a mixture D;
and step five, adding 5-20 parts by weight of ethyl acetate and 5-10 parts by weight of butyl acetate into the mixture D under the stirring condition, uniformly stirring, adjusting the viscosity to 20-30S under the NK-2 condition at 25 ℃, and filtering to obtain the compound.
5. The colored dual-cure UV coating for the automotive interior part according to claim 4, wherein: in the first step, the stirring condition is 600-; the stirring conditions in the rest steps are 300-700 r/min.
6. The utility model provides a colored dual cure UV paint film of automotive interior spare which characterized in that: formed using the coating material according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811090758.3A CN108997925B (en) | 2018-09-18 | 2018-09-18 | Colored dual-curing UV (ultraviolet) coating for automotive upholstery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811090758.3A CN108997925B (en) | 2018-09-18 | 2018-09-18 | Colored dual-curing UV (ultraviolet) coating for automotive upholstery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108997925A CN108997925A (en) | 2018-12-14 |
| CN108997925B true CN108997925B (en) | 2020-12-01 |
Family
ID=64591699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811090758.3A Active CN108997925B (en) | 2018-09-18 | 2018-09-18 | Colored dual-curing UV (ultraviolet) coating for automotive upholstery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108997925B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109971253A (en) * | 2019-02-26 | 2019-07-05 | 传美讯电子科技（珠海）有限公司 | Not glutinous UV ink-jet ink of a kind of quick-drying and preparation method thereof |
| CN110885626B (en) * | 2019-12-13 | 2022-03-22 | 东风汽车集团有限公司 | Scratch-resistant fingerprint-resistant high-gloss piano black paint and preparation method and application thereof |
| CN110982419A (en) * | 2019-12-25 | 2020-04-10 | 清远雅克化工有限公司 | Special high-performance dual-curing UV (ultraviolet) coating for automotive upholstery and preparation method thereof |
| CN111534213A (en) * | 2020-04-20 | 2020-08-14 | 长沙松润新材料有限公司 | Dual-curing high-gloss coating for automotive interior and preparation method and application thereof |
| CN111978583A (en) * | 2020-08-18 | 2020-11-24 | 李英敏 | Automotive interior plastic part and dual-curing UV coating composition thereof |
| CN113817402B (en) * | 2021-07-27 | 2022-07-01 | 广东希贵光固化材料有限公司 | Dual-curing highlight black automobile interior coating and preparation method thereof |
| CN114525076A (en) * | 2021-12-23 | 2022-05-24 | 惠州市凯辉化工有限公司 | PU/UV double-layer curing paint |
| CN114702894B (en) * | 2022-04-12 | 2023-03-24 | 佩特化工(上海)有限公司 | Aqueous single-layer UV (ultraviolet) matte black paint |
| CN115926598A (en) * | 2022-12-31 | 2023-04-07 | 惠州市韵点新材料科技股份有限公司 | Dual-curing UV (ultraviolet) finish paint and application thereof |
| CN116285653A (en) * | 2023-04-15 | 2023-06-23 | 千浪化研新材料(上海)有限公司 | UV dual-curing highlight paint and preparation method thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101445679A (en) * | 2008-12-25 | 2009-06-03 | 四川大学 | UV-light solidifying paint having decorative effect and preparation method thereof |
| CN101851464B (en) * | 2009-03-31 | 2012-10-17 | 汉达精密电子(昆山)有限公司 | Formula of ultraviolet curing coating |
| CN102746785B (en) * | 2011-04-19 | 2014-12-17 | 比亚迪股份有限公司 | Dual-cured coating composition and curing method thereof |
| CN104004451B (en) * | 2014-05-20 | 2017-01-18 | 江苏利田科技股份有限公司 | Automotive UV (Ultraviolet) light-cured camouflage coating and preparation method thereof |
| CN104789110B (en) * | 2015-05-12 | 2017-05-10 | 浙江纳美新材料股份有限公司 | Pigment-type UV curable coating for window film and preparation method of pigment-type UV curable coating |
| CN104987828B (en) * | 2015-06-09 | 2017-06-20 | 广州擎天材料科技有限公司 | Coloured UV coating with curing plastic and preparation method thereof |
| CN106366901B (en) * | 2016-08-27 | 2018-08-21 | 彩城（惠州）化工有限公司 | A kind of dual cure coloring UV nano paints |
-
2018
- 2018-09-18 CN CN201811090758.3A patent/CN108997925B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108997925A (en) | 2018-12-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108997925B (en) | Colored dual-curing UV (ultraviolet) coating for automotive upholstery | |
| CN109280477B (en) | Preparation method of colored dual-curing UV (ultraviolet) coating | |
| CN111073427B (en) | Dual UV (ultraviolet) curing coating for automotive interior parts, preparation method thereof and paint film formed by dual UV curing coating | |
| CN1935917B (en) | Bottom coating composition, and its preparing method and multilayer coat | |
| CN102153899B (en) | Ultraviolet-curable water-based colored paint composition | |
| CN101191029B (en) | Primer composition for metal substrate and its preparation method and multilayer coat | |
| CN107083150B (en) | A kind of UV coating for automobile interiors and its preparation method and application | |
| CN106634555B (en) | A kind of bis- solidification automobile repairing paints of UV and preparation method thereof | |
| CN110639776B (en) | Environment-friendly energy-saving automobile low-temperature integrated coating process | |
| CN101319113A (en) | Medium-temperature baking type fluorine-carbon paint and its use method | |
| CN109280478B (en) | Use method of UV coating for automotive interior | |
| CN107474677A (en) | A kind of high-solid lower-viscosity bumper varnish, preparation method and its application method | |
| CN113845834A (en) | Vacuum coating and coating method thereof | |
| CN102533030B (en) | Coating for vehicle, and preparation method for coating | |
| CN114149727A (en) | Full UV coating system for wooden door, preparation method and coating process | |
| CN108384419B (en) | High-adhesion low-temperature refinishing paint composition and preparation method thereof | |
| CN101735675A (en) | Ultraviolet coated matte varnish for office furniture | |
| CN108276886A (en) | A kind of super solidification repairing varnish of low VOC and preparation method thereof | |
| CN116082944B (en) | Dual UV (ultraviolet) curing coating with ultrahigh boiling resistance, and preparation method and application thereof | |
| CN110616034B (en) | Anti-fog UV coating for automobile exterior trimming part and automobile lamp, preparation method of anti-fog UV coating and paint film formed by anti-fog UV coating | |
| CN107641455B (en) | Anti-fingerprint UV coating for automotive interior parts, and preparation method and application thereof | |
| CN111205683B (en) | UV dual-curing corrugated paint and preparation method thereof | |
| CN112300685A (en) | Aerosol UV coating and preparation method thereof | |
| CN112680051A (en) | High-brightness high-weather-resistance varnish for spraying automobile bumper and preparation method thereof | |
| CN112094587A (en) | High-covering-power LED curing primer coating |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |