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Single-coated UV light cured color effect paint applied to plastic substrates and preparation

An ultraviolet and light curing technology, applied in coatings, polyester coatings, polyether coatings, etc., can solve the problems of insufficient photoinitiator activity, non-dry coating film, incomplete polymerization reaction of photocurable resin and reactive diluent, etc. , to achieve the effect of small molecular weight, tight network coating structure, improved wear resistance and chemical resistance

Active Publication Date: 2015-06-03
DONGLAI COATING TECH SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although photocurable coatings have many advantages, they are difficult to be used in pigmented coatings, because the polymerization, curing, and film formation of UV UV photocurable coatings need to be irradiated by ultraviolet light and then reacted. If the coating is mixed with pigments and other shading factors, It is easy to destroy the photoinitiator's absorption of ultraviolet radiation energy, which will lead to insufficient activity of the photoinitiator, and indirectly cause incomplete polymerization of the photocurable resin and reactive diluent, which will eventually lead to non-drying of the coating film
[0005] Therefore, there are very few reports on single-colored UV curable coatings in the existing market. Most of the UV curable coatings currently used in the market are transparent varnish products (without any color effects), which are mainly sprayed on various Above the color paint, it only provides the protection function of the lower layer of paint

Method used

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  • Single-coated UV light cured color effect paint applied to plastic substrates and preparation
  • Single-coated UV light cured color effect paint applied to plastic substrates and preparation
  • Single-coated UV light cured color effect paint applied to plastic substrates and preparation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A preparation method for a single-coated UV ultraviolet photocuring color effect paint applied to a plastic base material, the method comprising the following steps:

[0041] (1) Preparation of mixture A:

[0042]

[0043] (i) Add the resin, UV monomer, and leveling agent into the small bucket first according to the formula requirements, and stir at 800-900 rpm, stir for 5-10 minutes, and keep the temperature at 30-50°C;

[0044] (2) Preparation of mixture B:

[0045]

[0046] (ii) Add pearlescent pigment, nano-color paste, photoinitiator, and photosensitizer into the large tank according to the formula requirements, stir at 800-1200 rpm for 5-10 minutes, and keep the temperature at 30-50°C;

[0047] (iii) The mixture obtained in the sampling step (ii) is tested for cleanliness, and the scraper paper is scraped with a 100um wet film preparation device, and there are no obvious particles on the scraper paper;

[0048] (iv) Add the mixture obtained in step (i) int...

Embodiment 2

[0052] (1) Preparation of mixture A:

[0053]

[0054] (i) Add the resin, UV monomer, and leveling agent into the small bucket first according to the formula requirements, and stir at 800-900 rpm for 5-10 minutes, keeping the temperature at 30-50°C;

[0055] (2) Preparation of mixture B:

[0056]

[0057] (ii) Add pearlescent pigments, colorants, photoinitiators, and photosensitizers into the vat according to the recipe requirements, stir at 800-1200 rpm for 5-10 minutes, and keep the temperature at 30-50°C;

[0058] (iii) Sampling (ii) To test the cleanliness, use a 100um wet film preparer to scrape on the scraper paper, and there are no obvious particles on the scraper paper;

[0059] (iv) Add (i) into (ii), stir at 800-900 rpm for 5-10 minutes;

[0060] (v) Sampling (iv) Check the cleanliness. After there are no obvious particles, use the Iwata #2 cup to check and adjust to the range of 9 to 10 seconds;

[0061] (vi) filter, weigh and pack.

Embodiment 3

[0063] (1) Preparation of mixture A:

[0064]

[0065] (i) Add the resin, UV monomer, and leveling agent into the small bucket first according to the formula requirements, and stir at 800-900 rpm for 5-10 minutes, keeping the temperature at 30-50°C;

[0066] (2) Preparation of mixture B:

[0067]

[0068] (ii) Add pearlescent pigments, colorants, photoinitiators, and photosensitizers into the vat according to the recipe requirements, stir at 800-1200 rpm for 5-10 minutes, and keep the temperature at 30-50°C;

[0069] (iii) Sampling (ii) To test the cleanliness, use a 100um wet film preparer to scrape on the scraper paper, and there are no obvious particles on the scraper paper;

[0070] (iv) Add (i) into (ii), stir at 800-900 rpm for 5-10 minutes;

[0071] (v) Sampling (iv) Check the cleanliness. After there are no obvious particles, use the Iwata #2 cup to check and adjust to the range of 9 to 10 seconds;

[0072] (vi) filter, weigh and pack.

[0073] When using thi...

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PUM

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Abstract

The invention relates to single-coated UV light cured color effect paint applied to plastic substrates and a preparation method thereof. The effect paint comprises the following components in parts by weight: 20-30 parts of light-cured resin, 40-50 parts of UV monomer, 4-8 parts of pearlescent pigment, 10-20 parts of nano paste, 3-5 parts of photoinitiator, 2-4 parts of photosensitizer, 0.5-1 part of leveling agent and 10-20 parts of organic solvent. Compared with the prior art, the effect paint provided by the invention has the properties of high UV light curing speed, high coating film surface hardness, excellent wear resistance and chemical resistance and the like, and has the advantages of color decorative effect, etc.

Description

technical field [0001] The invention relates to coatings, in particular to a single-coating UV ultraviolet light-curing color effect paint applied to a base material of a plastic part and a preparation method thereof. Background technique [0002] After the UV curable coating is irradiated by ultraviolet light, the photoinitiator first absorbs the energy of ultraviolet radiation and is activated, and the electrons in the outer layer of the molecule jump, and an active center is generated in a very short time, and then the active center and the different components in the resin The action of the saturated group triggers the breakage of the double bond in the photocurable resin and the reactive diluent molecule, and a continuous polymerization reaction occurs, thereby cross-linking each other to form a film. Chemical kinetic studies have shown that the mechanism by which ultraviolet light promotes the curing of UV coatings belongs to free radical chain polymerization. The fir...

Claims

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Application Information

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IPC IPC(8): C09D167/06C09D167/08C09D175/14C09D171/00C09D163/10C09D4/02C09D7/12
CPCC09D4/06C09D7/61C09D7/63C09D163/10C09D167/06C09D167/08C09D171/00C09D175/14
Inventor 朱忠敏潘嘉豪陈嘉谊
Owner DONGLAI COATING TECH SHANGHAI
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