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Plastic base material surface coating

A technology for plastic substrates and surface coatings, applied in the field of coatings, can solve problems such as high solubility parameters and surface tension, poor wettability of substrates and pigments, low adhesion of coatings to polar plastic surfaces, etc. The effect of coagulation, convenient production and low cost

Inactive Publication Date: 2013-06-26
NINGBO SANLI NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But compared with traditional solvent-based plastic coatings, there are still some problems: high solubility parameters and surface tension of water, poor wetting of substrates and pigments, low adhesion of coatings to polar plastic surfaces

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The present embodiment 1, a kind of surface coating of plastic base material, comprises the urea-based monomer modified hydroxystyrene-acrylic emulsion synthesized by the seed emulsion process, and the urea-based monomer-modified hydroxystyrene-acrylic emulsion includes a composite emulsifier: 2 Parts——3 parts, deionized water: 50 parts, monomer pre-emulsion I and monomer pre-emulsion II;

[0024] Wherein, the raw material composition and weight percent thereof of monomer pre-emulsion I are as follows:

[0025] Butyl acrylate: 10 parts - 17 parts; Methyl methacrylate: 15 parts - 25 parts;

[0026] Wherein, the raw material composition and weight percent thereof of monomer pre-emulsion II are as follows:

[0027] Methacrylamide ethylene urea compound: 1 part - 3.5 parts; urea basic body: 1 part;

[0028] Methacrylic acid: 1 part - 1.5 parts; hydroxypropyl acrylate: 5 parts - 10 parts;

[0029] Vinyl triethoxysilane: 2 parts - 5 parts; Styrene: 5 parts - 10 parts;

[...

Embodiment 2

[0037] The present embodiment 2, a kind of plastic substrate surface coating, comprises the urea-based monomer modified hydroxystyrene-acrylic emulsion synthesized by the seed emulsion process, and the urea-based monomer-modified hydroxystyrene-acrylic emulsion includes a composite emulsifier: 3 Parts, deionized water: 50 parts, monomer pre-emulsion I and monomer pre-emulsion II;

[0038] Wherein, the raw material composition and weight percent thereof of monomer pre-emulsion I are as follows:

[0039] Butyl acrylate: 17 parts; Methyl methacrylate: 25 parts;

[0040] Wherein, the raw material composition and weight percent thereof of monomer pre-emulsion II are as follows:

[0041] Methacrylamide ethylene urea complex: 3.5 parts; urea basic body: 1 part;

[0042] Methacrylic acid: 1.5 parts; hydroxypropyl acrylate: 10 parts;

[0043] Vinyltriethoxysilane: 5 parts; Styrene: 10 parts;

[0044] The urea-based monomer-modified hydroxystyrene-acrylic emulsion also includes a cu...

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PUM

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Abstract

The invention discloses a plastic base material surface coating. The coating comprises carbamido monomer modified hydroxyl styrene acrylic emulsion synthesized by adopting a seed emulsion process, wherein the carbamido monomer modified hydroxyl styrene acrylic emulsion comprises 2 to 3 parts of composite emulsifier, 50 parts of deionized water, monomer pre-emulsification liquid I and a monomer pre-emulsification liquid II. The coating is high in chemical stability and high in reaction rate, can be used for eliminating precipitation and solidification phenomena, and has the advantages of good quality indexes, high gelling rate, high viscosity, long service life, low water absorption, convenience in preparation, low cost and high water resistance.

Description

technical field [0001] The invention relates to a paint, in particular to a plastic substrate surface paint. Background technique [0002] Acrylic water-based coatings have excellent gloss retention, color retention, and weather resistance, and have become one of the most widely used water-based coatings in furniture, plastics and machinery industries. However, compared with traditional solvent-based plastic coatings, there are still some problems: high solubility parameters and surface tension in water, poor wettability to substrates and pigments, and low adhesion of coatings to polar plastic surfaces. [0003] In this study, based on urea-based monomer modified styrene-acrylic emulsion, anionic low-hydroxy value styrene-acrylic emulsion was synthesized by seed emulsion-pre-emulsification-semi-continuous process. The effects of different urea-based monomer content and functional monomer content on the properties of the emulsion were studied, and a waterborne plastic coatin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C08F220/14C08F220/18C08F220/60C08F220/06C08F220/28C08F230/08C08F212/08C08F2/24C08J7/04
Inventor 吴旭明
Owner NINGBO SANLI NEW MATERIALS
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