High-texture high-fullness electroplating-imitating one-coat plastic coating as well as preparation method and application thereof

Abstract

The invention discloses a high-texture high-fullness electroplating-imitating one-coat plastic coating as well as a preparation method and application thereof, and belongs to the technical field of electroplating-imitating coatings. The coating comprises a component A, a component B and a component C, the component A comprises the following raw materials in parts by weight: 6-8 parts of imitation electroplating silver paste; 2.5 to 19.5 parts of ethyl acetate; 35 to 40 parts of acrylic resin 1; 15 to 20 parts of acrylic resin 2; 20 to 25 parts of cellulose acetate; 4 parts of an anti-settling auxiliary agent; 0.3 part of a dispersant; 0.2 part of a leveling agent; the component B is 6-methylene diisocyanate; the component C is a composite diluent, and the composite diluent comprises at least one of ethyl acetate and butyl acetate; the weight ratio of the component A to the component B to the component C is 100: 20: (90-110). According to the coating disclosed by the invention, one-time electroplating-imitating effect paint can be applied to a plastic material, the effect of electroplating-imitating multi-coating paint can be replaced, and the effects of energy conservation and emission reduction are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of imitation electroplating coatings, and in particular to a high-textured and high-fullness imitation electroplating plastic coating and a preparation method and application thereof. Background Art

[0002] In order to make all kinds of electronic products, auto parts and toys look more upscale and textured, designers often add metal elements, polishing or water electroplating when designing products. While increasing the sense of fashion, it also increases the cost and weight of the product. Later, the imitation electroplating paint with multi-coating process replaced the metal trim, because the imitation electroplating paint sprayed on the plastic substrate has both the appearance of metal texture and can reduce the weight of the real metal substrate, while reducing the pollution of the water environment by metal water electroplating and other unfavorable factors. At present, the imitation electroplating paint with multi-coating process on the market basically requires an imitation electroplating primer with a high-gloss and high-fullness topcoat, and at least two coats are required to achieve the imitation electroplating effect.

[0003] How to prepare a coating that can achieve an electroplating-like effect is a technical problem that needs to be solved urgently in this field. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a high-textured and high-fullness electroplating-like one-coat plastic coating and its preparation method and application. The present invention optimizes the resin and adjusts the ratio, and adds cellulose acetate. The prepared coating can obtain a coating with an electroplating-like effect by one coating, which can replace the existing electroplating-like multi-coat paint effect, achieve the effect of energy saving and emission reduction, save costs and improve production efficiency.

[0005] The technical solution of the present invention is as follows:

[0006] The first aspect of the present invention provides a high-quality and high-fullness electroplating-like plastic coating, the coating comprising component A, component B, and component C;

[0007] The A component includes the following raw materials in parts by weight:

[0008]

[0009] The B component is 6-methylene diisocyanate;

[0010] The C component is a composite diluent, and the composite diluent includes at least one of ethyl acetate and butyl acetate;

[0011] The weight ratio of the component A, the component B and the component C is 100:20:90-110.

[0012] Preferably, the acrylic resin 1 includes Guangdong Kelisen KN-5119;

[0013] And / or, the acrylic resin 2 includes Asahi Kasei F5651.

[0014] Preferably, the mass ratio of the acrylic resin 1 to the acrylic resin 2 is 2-2.3:1.

[0015] 4 Preferably, the imitation electroplating silver paste includes Shandong Yinjian's non-floating ZF-1206;

[0016] And / or, the cellulose acetate includes cellulose acetate CAB-381-20.

[0017] Preferably, the anti-settling aid includes Desbaron NS-5501;

[0018] And / or, the dispersant comprises dispersant KITO / CFC-6370.

[0019] Preferably, the leveling agent includes BYK333 produced by BYK Chemical.

[0020] Preferably, the composite diluent comprises 40-50 parts of butyl acetate and 50-60 parts of ethyl acetate.

[0021] The second aspect of the present invention provides a method for preparing the high-quality and high-fullness electroplating-like plastic coating as described in the first aspect, the preparation method comprising the following steps:

[0022] (1) 6-8 parts of imitation electroplating silver paste and 2.5-19.5 parts of ethyl acetate are mixed, and 35-40 parts of acrylic resin 1, 15-20 parts of acrylic resin 2 and 20-25 parts of cellulose acetate are added in sequence while stirring, and after mixing evenly, 4 parts of anti-settling aid, 0.3 parts of dispersant, and 0.2 parts of leveling agent are added, and stirred evenly to obtain component A;

[0023] (2) preparing a composite diluent and preparing component B;

[0024] (3) after mixing the component A of step (1) and the component B of step (2), adding the composite diluent of step (2) to adjust the viscosity, to obtain the coating;

[0025] Preferably, in step (2), the composite diluent is obtained by mixing 40-50 parts of butyl acetate and 50-60 parts of ethyl acetate;

[0026] In step (3), the weight ratio of component A, component B and component C is 100:20:90-110; preferably, the weight ratio of component A, component B and component C is 100:20:90-110.

[0027] The third aspect of the present invention provides an application of the high-quality and high-fullness electroplating-like plastic coating described in the first aspect, or the high-quality and high-fullness electroplating-like plastic coating prepared by the preparation method described in the second aspect, characterized in that the high-quality and high-fullness electroplating-like plastic coating is used to prepare a coating;

[0028] The application method comprises the following steps: spraying the high-textured and high-fullness electroplating-like plastic coating on a workpiece to form a coating film, and baking and curing the coating film to obtain a coating.

[0029] Preferably, the baking temperature is 75-85° C., the baking time is 30-60 min, and the thickness of the coating is 15-20 μm.

[0030] The beneficial technical effects of the present invention are:

[0031] The present invention combines an acrylic resin with a strong texture effect with a resin with high gloss and high fullness, and through the coordination of other components and the limitation of the ratio, the coating obtained can ensure the effective arrangement of aluminum powder in the silver paste and meet the requirements of high gloss and high fullness of the appearance. The cellulose acetate used can effectively enhance the arrangement of aluminum powder in the silver paste.

[0032] The coating of the present invention requires fewer coatings, and can achieve the effect of imitating electroplating with one coating, thereby achieving energy conservation and environmental protection, and having the characteristics of being beautiful, etc., and meeting the current social development needs and environmental protection requirements. DETAILED DESCRIPTION

[0033] The present invention will be described in detail below in conjunction with the embodiments.

[0034] It is understandable that the existing common silver powder paint resins are mostly low-hydroxypropylene macromolecular resins with a relatively low degree of cross-linking. The coatings usually produced have low gloss and no fullness. The present invention can improve the fullness of the paint film while taking into account a certain arrangement of silver powder, thereby forming a high-gloss and high-fullness silver powder paint coating by screening a medium-hydroxy polycarbonate resin with a moderate molecular weight.

[0035] The following are specific embodiments.

[0036] Example 1

[0037] A high-quality and high-fullness electroplating-like plastic coating, comprising 100 parts of component A, 20 parts of component B, and 100 parts of component C; wherein component A comprises the following raw materials in parts by weight: 6 parts of electroplating-like silver paste Shandong Yinjian non-floating ZF-1206, 19.5 parts of ethyl acetate, 35 parts of acrylic resin 1 Guangdong Kelisen KN-5119, 15 parts of acrylic resin 2 Asahi Kasei F5651, 20 parts of cellulose acetate CAB-381-20, 4 parts of anti-settling aid Desbaron NS-5501, 0.3 parts of dispersant KITO / CFC-6370, and 0.2 parts of leveling agent BYK333 of BYK Chemical. Component B is 6-methylene diisocyanate. Component C is 40 parts of butyl acetate and 60 parts of ethyl acetate.

[0038] The method for preparing the high-quality and high-fullness electroplating-like plastic coating comprises the following steps:

[0039] (1) 6 parts of imitation electroplating silver paste and 19.5 parts of ethyl acetate are fully mixed. 35 parts of acrylic resin 1, 15 parts of acrylic resin 2 and 20 parts of cellulose acetate are added while stirring. After the acrylic resin and the silver paste are fully mixed, 4 parts of anti-settling aid, 0.3 parts of dispersant and 0.2 parts of leveling agent are added and stirred fully to obtain the imitation electroplating plastic coating component A;

[0040] (2) thoroughly mixing 40 parts of butyl acetate and 60 parts of ethyl acetate to obtain a composite diluent;

[0041] (3) 100 parts of component A and 20 parts of component B are mixed, and a composite diluent is added to adjust the viscosity to obtain the finished coating.

[0042] Example 2

[0043] A high-quality, high-fullness electroplating-like plastic coating comprises 100 parts of component A, 20 parts of component B, and 100 parts of component C; wherein component A comprises the following raw materials in parts by weight: 7 parts of electroplating-like silver paste, 11.5 parts of ethyl acetate, 38 parts of acrylic resin 1, 17 parts of acrylic resin 2, 22 parts of cellulose acetate, 4 parts of anti-settling aid, 0.3 parts of dispersant, and 0.2 parts of leveling agent. Component B is 6-methylene diisocyanate. Component C is 45 parts of butyl acetate and 55 parts of ethyl acetate. The raw materials of each component are the same as those in Example 1.

[0044] The method for preparing the high-quality and high-fullness electroplating-like plastic coating comprises the following steps:

[0045] (1) Pre-dispersing the silver powder paste, fully mix 7 parts of imitation electroplating silver paste with 11.5 parts of ethyl acetate. Add 38 parts of acrylic resin 1, 17 parts of acrylic resin 2 and 22 parts of cellulose acetate while stirring, wait until the acrylic resin and the silver paste are fully mixed, then add 4 parts of anti-settling aid, 0.3 parts of dispersant, 0.2 parts of leveling agent, stir well, and obtain the imitation electroplating plastic coating component A;

[0046] (2) thoroughly mixing 45 parts of butyl acetate and 55 parts of ethyl acetate to obtain a composite diluent;

[0047] (3) 100 parts of component A and 20 parts of component B are mixed, and a composite diluent is added to adjust the viscosity to obtain the finished coating.

[0048] Example 3

[0049] A high-quality, high-fullness electroplating-like plastic coating, comprising 100 parts of component A, 20 parts of component B, and 100 parts of component C by weight; wherein component A comprises the following raw materials by weight: 8 parts of electroplating-like silver paste, 2.5 parts of ethyl acetate, 40 parts of acrylic resin 1, 20 parts of acrylic resin 2, 25 parts of cellulose acetate, 4 parts of anti-settling aid, 0.3 parts of dispersant, and 0.2 parts of leveling agent. Component B is 6-methylene diisocyanate. Component C is 50 parts of butyl acetate and 50 parts of ethyl acetate. The raw materials of each component are the same as those in Example 1.

[0050] The method for preparing the high-quality and high-fullness electroplating-like plastic coating comprises the following steps:

[0051] (1) Pre-dispersing the silver powder paste, fully mix 8 parts of the imitation electroplating silver paste with 2.5 parts of ethyl acetate. Add 40 parts of acrylic resin 1, 20 parts of acrylic resin 2 and 25 parts of cellulose acetate while stirring, wait until the acrylic resin and the silver paste are fully mixed, then add 4 parts of anti-settling aid, 0.3 parts of dispersant, 0.2 parts of leveling agent, stir well, and obtain the imitation electroplating plastic coating component A;

[0052] (2) fully mixing 50 parts of butyl acetate and 50 parts of ethyl acetate to obtain a composite diluent;

[0053] (3) 100 parts of component A and 20 parts of component B are mixed, and a composite diluent is added to adjust the viscosity to obtain the finished coating.

[0054] Example 4

[0055] A high-quality, high-fullness electroplating-like plastic coating comprises, by weight, 100 parts of component A, 20 parts of component B, and 100 parts of component C; wherein component A comprises the following raw materials by weight: 6 parts of electroplating-like silver paste, 4.5 parts of ethyl acetate, 40 parts of acrylic resin 1, 20 parts of acrylic resin 2, 25 parts of cellulose acetate, 4 parts of anti-settling aid, 0.3 parts of dispersant, and 0.2 parts of leveling agent. Component B is 6-methylene diisocyanate. Component C is 40 parts of butyl acetate and 60 parts of ethyl acetate. The raw materials of each component are the same as those in Example 1.

[0056] The method for preparing the high-quality and high-fullness electroplating-like plastic coating comprises the following steps:

[0057] (1) Pre-dispersing the silver powder paste, 6 parts of the imitation electroplating silver paste and 4.5 parts of ethyl acetate are fully mixed. 40 parts of acrylic resin 1, 20 parts of acrylic resin 2 and 25 parts of cellulose acetate are added while stirring, and after the acrylic resin and the silver paste are fully mixed, 4 parts of anti-settling aid, 0.3 parts of dispersant, and 0.2 parts of leveling agent are added and stirred fully to obtain the imitation electroplating plastic coating component A;

[0058] (2) thoroughly mixing 40 parts of butyl acetate and 60 parts of ethyl acetate to obtain a composite diluent;

[0059] (3) 100 parts of component A and 20 parts of component B are mixed, and a composite diluent is added to adjust the viscosity to obtain the finished coating.

[0060] Example 5

[0061] A high-quality, high-fullness electroplating-like plastic coating, comprising 100 parts of component A, 20 parts of component B, and 100 parts of component C by weight; wherein component A comprises the following raw materials by weight: 8 parts of electroplating-like silver paste, 17.5 parts of ethyl acetate, 35 parts of acrylic resin 1, 15 parts of acrylic resin 2, 20 parts of cellulose acetate, 4 parts of anti-settling aid, 0.3 parts of dispersant, and 0.2 parts of leveling agent. Component B is 6-methylene diisocyanate. Component C is 40 parts of butyl acetate and 60 parts of ethyl acetate. The raw materials of each component are the same as those in Example 1.

[0062] The method for preparing the high-quality and high-fullness electroplating-like plastic coating comprises the following steps:

[0063] (1) Pre-dispersing the silver powder paste, fully mix 8 parts of the imitation electroplating silver paste with 17.5 parts of ethyl acetate. Add 35 parts of acrylic resin 1, 15 parts of acrylic resin 2 and 20 parts of cellulose acetate while stirring, wait until the acrylic resin and the silver paste are fully mixed, then add 4 parts of anti-settling aid, 0.3 parts of dispersant, 0.2 parts of leveling agent, stir well, and obtain the imitation electroplating plastic coating component A;

[0064] (2) thoroughly mixing 40 parts of butyl acetate and 60 parts of ethyl acetate to obtain a composite diluent;

[0065] (3) 100 parts of component A and 20 parts of component B are mixed, and a composite diluent is added to adjust the viscosity to obtain the finished coating.

[0066] Comparative Example 1

[0067] A plastic coating comprises 100 parts of component A, 10 parts of component B, and 100 parts of component C; wherein component A comprises the following raw materials in parts by weight: 6 parts of imitation electroplating silver paste, 19.5 parts of ethyl acetate, 50 parts of DISEN imitation electroplating resin wxu-880-BA acrylic resin, 20 parts of cellulose acetate, 4 parts of anti-settling aid, 0.3 parts of dispersant, and 0.2 parts of leveling agent. Component B is 6-methylene diisocyanate. Component C is 40 parts of butyl acetate and 60 parts of ethyl acetate. The raw materials of the components without given models are the same as those in Example 1.

[0068] The method for preparing the above-mentioned plastic coating comprises the following steps:

[0069] (1) Fully mix 6 parts of imitation electroplating silver paste with 19.5 parts of ethyl acetate. Add 50 parts of DIC imitation electroplating resin wxu-880-BA acrylic resin and 20 parts of cellulose acetate while stirring. After the acrylic resin and the silver paste are fully mixed, add 4 parts of anti-settling aid, 0.3 parts of dispersant, and 0.2 parts of leveling agent, stir well, and obtain a plastic coating component A;

[0070] (2) thoroughly mixing 40 parts of butyl acetate and 60 parts of ethyl acetate to obtain a composite diluent;

[0071] (3) 100 parts of component A are mixed with 10 parts of component B, and a composite diluent is added to adjust the viscosity to obtain the finished coating.

[0072] Comparative Example 2

[0073] A plastic coating comprises 100 parts of component A, 10 parts of component B, and 100 parts of component C; wherein component A comprises the following raw materials in parts by weight: 6 parts of imitation electroplating silver paste, 19.5 parts of ethyl acetate, 35 parts of DIC imitation electroplating resin wxu-880-BA, 15 parts of Q857 acrylic resin of Mitsui Chemicals, 20 parts of cellulose acetate, 4 parts of anti-settling aid, 0.3 parts of dispersant, and 0.2 parts of leveling agent. Component B is 6-methylene diisocyanate. Component C is 40 parts of butyl acetate and 60 parts of ethyl acetate. The raw materials of the components without given models are the same as those in Example 1.

[0074] The method for preparing the above-mentioned plastic coating comprises the following steps:

[0075] (1) 6 parts of imitation electroplating silver paste and 19.5 parts of ethyl acetate are fully mixed. 35 parts of DIC imitation electroplating resin wxu-880-BA, 15 parts of Mitsui Chemicals Q857 acrylic resin and 20 parts of cellulose acetate are added while stirring. After the acrylic resin and the silver paste are fully mixed, 4 parts of anti-settling aid, 0.3 parts of dispersant and 0.2 parts of leveling agent are added and stirred fully to obtain a plastic coating component A;

[0076] (2) thoroughly mixing 40 parts of butyl acetate and 60 parts of ethyl acetate to obtain a composite diluent;

[0077] (3) 100 parts of component A and 20 parts of component B are mixed, and a composite diluent is added to adjust the viscosity to obtain the finished coating.

[0078] Comparative Example 3

[0079] A plastic coating comprises 100 parts of component A, 20 parts of component B, and 100 parts of component C; wherein component A comprises the following raw materials in parts by weight: 6 parts of imitation electroplating silver paste, 19.5 parts of ethyl acetate, 35 parts of DISEN imitation electroplating resin wxu-880-BA, 15 parts of allnex 2803 acrylic resin, 20 parts of cellulose acetate, 4 parts of anti-settling aid, 0.3 parts of dispersant, and 0.2 parts of leveling agent. Component B is 6-methylene diisocyanate. Component C is 40 parts of butyl acetate and 60 parts of ethyl acetate. The raw materials of the components without given models are the same as those in Example 1.

[0080] The method for preparing the above-mentioned plastic coating comprises the following steps:

[0081] (1) 6 parts of imitation electroplating silver paste and 19.5 parts of ethyl acetate are fully mixed. 35 parts of DIC imitation electroplating resin wxu-880-BA, 15 parts of allnex 2803 acrylic resin and 20 parts of cellulose acetate are added while stirring. After the acrylic resin and the silver paste are fully mixed, 4 parts of anti-settling aid, 0.3 parts of dispersant and 0.2 parts of leveling agent are added and stirred fully to obtain a plastic coating component A;

[0082] (2) thoroughly mixing 40 parts of butyl acetate and 60 parts of ethyl acetate to obtain a composite diluent;

[0083] (3) 100 parts of component A and 20 parts of component B are mixed, and a composite diluent is added to adjust the viscosity to obtain the finished coating.

[0084] Application Examples

[0085] The coatings obtained in the embodiments and comparative examples were respectively sprayed on the workpiece using a 1.1-caliber pneumatic spray gun with the air pressure adjusted to 0.3Mpa. The film thickness was defined as 20μm. The baking temperature was then 75-85℃ / 60min. The desired coating was obtained after the coating reached surface dryness. The properties of the coatings corresponding to the coatings of the embodiments and comparative examples were measured. The test methods and results are shown in Table 1-2. (The workpiece coated with the test sample was a PC sheet) Table 1 Performance test of the embodiment

[0086]

[0087] Table 2 Performance test of comparative examples

[0088]

[0089] It can be seen from the above table that the coatings prepared in Examples 1-5 can obtain imitation electroplating with high texture and high fullness through one coating, and the imitation electroplating effect is significantly better than that of the comparative example.

[0090] The present invention can successfully prepare a high-gloss and high-fullness imitation electroplating one-coat plastic paint by selecting resins and controlling the proportions, and adding cellulose acetate, thereby saving costs and improving production efficiency.

[0091] The above is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments. It is understood that other improvements and changes directly derived or associated by those skilled in the art without departing from the spirit and concept of the present invention should be considered to be included in the protection scope of the present invention.

Claims

1. A high-quality, high-fullness electroplating-like plastic coating, characterized in that: The coating comprises component A, component B and component C; The A component includes the following raw materials in parts by weight: The B component is 6-methylene diisocyanate; The C component is a composite diluent, and the composite diluent includes at least one of ethyl acetate and butyl acetate; The weight ratio of component A, component B and component C is 100:20:90-110.

2. The high-quality and high-fullness electroplating-like plastic coating according to claim 1 is characterized in that: The acrylic resin 1 includes Guangdong Kelisen KN-5119; And / or, the acrylic resin 2 includes Asahi Kasei F5651.

3. The high-quality and high-fullness electroplating-like plastic coating according to claim 1 is characterized in that: The mass ratio of the acrylic resin 1 to the acrylic resin 2 is 2-2.3:

1.

4. The high-quality and high-fullness electroplating-like plastic coating according to claim 1 is characterized in that: The imitation electroplating silver paste includes Shandong Yinjian's non-floating ZF-1206; And / or, the cellulose acetate includes cellulose acetate CAB-381-20.

5. The high-quality and high-fullness electroplating-like plastic coating according to claim 1 is characterized in that: The anti-settling aid includes Desbaron NS-5501; And / or, the dispersant comprises dispersant KITO / CFC-6370.

6. The high-quality and high-fullness electroplating-like plastic coating according to claim 1 is characterized in that: The leveling agent includes BYK333 produced by BYK Chemical.

7. The high-quality and high-fullness electroplating-like plastic coating according to claim 1 is characterized in that: The composite diluent includes 40-50 parts of butyl acetate and 50-60 parts of ethyl acetate.

8. A method for preparing the high-quality and high-fullness electroplating-like plastic coating according to any one of claims 1 to 7, characterized in that: The preparation method comprises the following steps: (1) 6-8 parts of imitation electroplating silver paste and 2.5-19.5 parts of ethyl acetate are mixed, and 35-40 parts of acrylic resin 1, 15-20 parts of acrylic resin 2 and 20-25 parts of cellulose acetate are added in sequence while stirring, and after mixing evenly, 4 parts of anti-settling aid, 0.3 parts of dispersant, and 0.2 parts of leveling agent are added, and stirred evenly to obtain component A; (2) preparing a composite diluent and preparing component B; (3) after mixing the component A of step (1) and the component B of step (2), adding the composite diluent of step (2) to adjust the viscosity, to obtain the coating; Preferably, in step (2), the composite diluent is obtained by mixing 40-50 parts of butyl acetate and 50-60 parts of ethyl acetate; In step (3), the weight ratio of component A, component B and component C is 100:20:90-110; preferably, the weight ratio of component A, component B and component C is 100:20:90-110.

9. An application of the high-quality and high-fullness electroplating-like plastic coating as described in any one of claims 1 to 7, or the high-quality and high-fullness electroplating-like plastic coating prepared by the preparation method as described in claim 8, characterized in that: The high-quality and high-fullness electroplating-like plastic coating is used to prepare the coating; The application method comprises the following steps: spraying the high-textured and high-fullness electroplating-like plastic coating on a workpiece to form a coating film, and baking and curing the coating film to obtain a coating.

10. The use according to claim 9, characterized in that: The baking temperature is 75-85° C., the time is 30-60 min, and the thickness of the coating is 15-20 μm.

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