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A metal packaging coating cured by electron beam and preparation method thereof

Active Publication Date: 2021-08-03
上海昱彩包装材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the traditional metal packaging coatings are baking varnishes, which have a large amount of solvents, are easy to pollute the environment, and have low production efficiency. However, radiation curing has the advantages of environmental protection, high efficiency, and low energy consumption. Among them, UV (ultraviolet) curing is often used in metal packaging coatings. In the field of varnishes, for the field of high-hiding paints with a thickness of more than 7um, UV has the defect of incomplete curing, while EB (electron beam) curing has a good deep curing ability, which can effectively make up for the defects of incomplete UV curing. However, compared with traditional metal coatings, EB cured paint films are prone to cracking and damage during metal bending, stretching, and stamping processes.

Method used

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  • A metal packaging coating cured by electron beam and preparation method thereof
  • A metal packaging coating cured by electron beam and preparation method thereof
  • A metal packaging coating cured by electron beam and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0041] Embodiment 1: An electron beam cured metal packaging coating, the components and their corresponding parts by weight are shown in Table 1, and are prepared through the following steps:

[0042] Step 1, preparing modified novolac epoxy acrylate: mixing novolac epoxy resin and acrylic acid with a molar ratio of 1:0.25 and adding to toluene, adding 2% N,N-dimethylaniline in parts by weight, and React at 75°C for 3 hours, after natural cooling, extract 4 times with anhydrous ether to obtain a viscous substance, dry the viscous substance in vacuum at 50°C for 24 hours to obtain the product;

[0043] Step 2, stirring 1 / 4 of the total amount of modified novolac epoxy acrylate, triethoxysilane, titanium dioxide, carbon black, and sodium lauryl sulfate to form a mixture;

[0044] Step 3, placing the uniformly stirred mixture in step 2 in a grinder for grinding and dispersing to obtain a color paste;

[0045] Step 4, mix the color paste prepared in step 3 with the remaining 30 p...

Embodiment 2-6

[0047] Embodiment 2-6: An electron beam cured coating for metal packaging. The difference from Embodiment 1 is that each component and its corresponding parts by weight are shown in Table 1.

[0048] Each component and parts by weight thereof in Table 1 Embodiment 1-6

[0049]

Embodiment 7

[0050] Embodiment 7: a kind of preparation method of the metal packaging coating of electron beam solidification, and the difference of embodiment 1 is, in step one, prepare modified novolac epoxy acrylate: the phenolic ring that molar ratio is 1:1 Oxygen resin and acrylic acid were mixed and added to toluene, 2% by weight of N,N-dimethylaniline was added, reacted at 90°C for 2 hours, cooled naturally, extracted 4 times with anhydrous ether to obtain viscous Thick material, the viscous material was vacuum-dried at 50°C for 24 hours to obtain.

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PUM

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Abstract

The invention discloses an electron beam cured metal packaging coating and a preparation method thereof, and relates to the technical field of metal packaging coatings. The technical gist is: an electron beam cured metal packaging coating, comprising the following components in parts by weight: 40-70 parts of modified novolac epoxy acrylate; 4-6 parts of triethoxysilane; 20-30 parts of filler 10-20 parts of pigments and fillers; 1-2 parts of dispersants; 0.1-0.5 parts of defoamers; 0.1-0.8 parts of leveling agents. The metal packaging paint produced by adopting the formula of the invention has the advantages of high adhesion and high flexibility.

Description

technical field [0001] The invention relates to the technical field of metal packaging coatings, in particular to an electron beam cured metal packaging coating and a preparation method thereof. Background technique [0002] Metal packaging coatings are an important branch of industrial coatings, which use their sealing effect on metal surfaces to prevent external water, air, solutions, etc. from corroding and oxidizing metal materials. Moreover, different manufacturers can also perform artistic treatment on the painted metal surface. Therefore, metal packaging coatings are widely used in the processing of various metal cans, and can protect and decorate the cans themselves. [0003] The ink cured by EB (electron beam) energy is called EB ink. Electron beam curing has many advantages, such as fast, energy-saving, and electron beam curing only takes a few seconds; after curing, it is more thorough, and the curing degree can reach 95-100%. , No need for post-curing, relative...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/10C09D5/08C09D7/61C09D7/63C08G59/17
CPCC08G59/1466C08K2003/2241C08L2201/08C09D5/08C09D163/10C09D7/61C09D7/63C08L91/06C08K5/5415C08K3/22C08K3/04C08K5/41C08K13/02
Inventor 王剑徐明金洪晓明张文邦
Owner 上海昱彩包装材料有限公司