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Coil coating bonded with PVC film and preparation method thereof

A PVC film and coil coating technology, applied in the field of coatings, can solve problems such as failure to meet requirements, and achieve the effects of excellent adhesion, excellent mechanical properties, and excellent anti-corrosion performance

Active Publication Date: 2016-05-11
NIPPON PAINT IND COATINGS SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The performance of the ECM board has a great influence on the quality of the PVC film, and also has a great relationship with the quality of the coating that adheres the PVC film, because the adhesion between the coating and the substrate and the adhesion between the coating and the PVC film have a great impact on the PVC film. The protective effect of household appliances is very important. In addition, household appliances have high requirements for water boiling resistance, salt spray resistance, cupping performance and flexibility. The existing coil coatings are directly used as coils for bonding PVC films Paint is not up to the mark

Method used

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  • Coil coating bonded with PVC film and preparation method thereof
  • Coil coating bonded with PVC film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] a) Weigh 300 grams of polyester resin, 70 grams of rutile titanium dioxide, and 7 grams of iron oxide red powder. 16 grams of iron oxide yellow powder, 0.1 gram of carbon black powder, 9 grams of calcium ion exchange silica type antirust pigment, 45 grams of cyclohexanone, 35 grams of S-150 aromatic solvent, 10 grams of butyl acetate, 5.6 grams of low molecular weight non Saturated polycarboxylic acid polymer dispersant is commercially available BYK, stir evenly, and then grind to a fineness of less than 15 μm to form a color paste for later use.

[0040] b) Weigh 210 grams of polyester resin, 130 grams of bisphenol A epoxy resin, 42 grams of blocked methylene diisocyanate, 25 grams of highly methylated melamine resin, 12 grams of Nochet PAE206, acrylate leveling agent 3 gram, 2 grams of acrylate defoamer, 15 grams of cyclohexanone, 15 grams of S-150 aromatic hydrocarbon solvent, 15 grams of butyl acetate, 5 grams of dibasic acid ester and mix well.

[0041] c) Slowly ...

Embodiment 2

[0051] A coil coating for bonding PVC films, comprising the steps of:

[0052] Take by weighing 300 grams of polyester resin, 140 grams of rutile titanium dioxide, 9 grams of calcium ion exchange silica type antirust pigments, 45 grams of cyclohexanone, 35 grams of S-150 aromatic solvent, 10 grams of butyl acetate, 3 Gram of commercially available P-104S of low molecular weight unsaturated polycarboxylic acid polymer dispersant, stir evenly, then grind to fineness below 15 μ m to form color paste, standby.

[0053] 210 grams of the remaining polyester resin, 130 grams of bisphenol A epoxy resin, 42 grams of blocked methylene diisocyanate, 25 grams of highly methylated melamine resin, 12 grams of Nochet PAE206, 3 grams of acrylate leveling agent , 2 grams of acrylate defoamer, 15 grams of cyclohexanone, 15 grams of S-150 aromatic hydrocarbon solvent, 15 grams of butyl acetate, 5 grams of dibasic acid ester, mix well, and slowly add the ground color paste under stirring In the ...

Embodiment 3

[0058] A coil coating for bonding PVC films, comprising the steps of:

[0059] Weigh 300 grams of polyester resin, 20 grams of rutile titanium dioxide, 2 grams of carbon black powder, 9 grams of calcium ion exchange silica type antirust pigments, 35 grams of cyclohexanone, 35 grams of S-150 aromatic solvent, 15 grams Butyl acetate, 8 grams of low-molecular-weight unsaturated polycarboxylic acid polymer dispersant, stirred evenly, then ground to a fineness of 15 μm or less to form a color paste, set aside.

[0060] 150 grams of the remaining polyester resin, 160 grams of bisphenol A epoxy resin, 42 grams of blocked methylene diisocyanate, 15 grams of highly methylated melamine resin, 9.5 grams of Nochet PAE206, acrylate leveling agent 3 grams, 2 grams of acrylate defoamer, 15 grams of cyclohexanone, 15 grams of S-150 aromatic hydrocarbon solvent, 15 grams of butyl acetate, mix well, and slowly add the ground color paste to the above premixed one under stirring In the container...

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Abstract

The invention discloses a coil coating bonded with a PVC film. The coil coating bonded with the PVC film is prepared from the following raw materials by weight: 45 to 60 parts of polyester resin, 10 to 20 parts of epoxy resin, 4 to 6 parts of enclosed isocyanate, 2 to 3.5 parts of amino resin, 0 to 20 parts of pigment, 0.5 to 1.7 parts of a silanol compound, 0.4 to 2.5 parts of an auxiliary agent and 10 to 25 parts of a solvent. The coil coating bonded with the PVC film has excellent anticorrosion performance and boiling resistance. The coil coating is applicable to coiled material (colorful coated steel plate) production process, can be directly bonded with the PVC film and has excellent mechanical performance and adhesion. The coil coating can present more and richer colors after addition of different pigments as needed.

Description

technical field [0001] The invention relates to the technical field of coatings. More specifically, it relates to a coil coating for bonding PVC films and a method for preparing the same. Background technique [0002] Pre-coated coil coatings have been widely used in construction and home appliances due to their variable colors, easy processing and excellent mechanical properties. At present, in the home appliance industry, the films used for ECM boards are mainly PET. Home appliances require high flexibility, and the selected coil coating generally uses a polyester system. When the polyester system coating is bonded to a PET film (PET is a kind of saturated polyester), it will form hydrogen bonds with the hydroxyl groups in the PET film, improving Adhesion, enhance the bonding effect with PET film. However, there are no groups in the structure of PVC films that can form hydrogen bonds or chemical bonds with polyester coatings, making it more difficult to bond. The film ...

Claims

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Application Information

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IPC IPC(8): C09D167/00C09D163/00C09D7/12C09D5/08
Inventor 黄高峰
Owner NIPPON PAINT IND COATINGS SHANGHAI
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