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VCM (Vinyl Chloride Monomer)-BA (Butyl Acrylate)-VAC (Vinyl Acetate)-organic silicon copolymer emulsion and preparation method thereof

A VCM-BA-VAC-, copolymer emulsion technology, applied in the field of industrial coatings, can solve the problems of chemical reaction, no durability, easy to fall off, etc., to achieve low cost, good water resistance and corrosion resistance, strong adhesion. Effect

Inactive Publication Date: 2013-04-03
WUXI HONGHUI NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, most of the coatings produced by domestic manufacturers and imported from foreign countries are organic coatings, which are roughly divided into water-based and oil-based coatings according to categories. However, no matter which coating has unresolved shortcomings, such as no durability, easy to fall off, easy Chemical reactions with the external environment, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The preparation method of the VCM-BA-VAC-organic silicon copolymer emulsion, the steps are:

[0017] (1) Monomer pre-emulsification: Weigh 360 parts of vinyl chloride, 270 parts of butyl acrylate, 90 parts of vinyl acetate, 7.2 parts of acrylic acid, 45 parts of vinyltrimethoxysilane, and 0.6 parts of emulsifier OP-4. Stir and emulsify in the polymerization reactor for 1 hour to obtain the emulsified monomer solution for subsequent use;

[0018] (2) Preparation and addition of additives: Take 250 parts of deionized water, 6 parts of emulsifier sodium dodecylbenzene sulfonate, 6 parts of sodium dodecyl sulfate and 10 parts of OP-100, and the preservative PVP K- 30 3 parts, fully stirred and dissolved, then added to step (1) pre-emulsification polymerization reaction kettle; 3.6 parts of initiator ammonium persulfate were dissolved in 150 parts of water for later use;

[0019] (3) Reaction: by volume, first take 1 / 4 of the pre-emulsified monomer in step (1) and add it to...

Embodiment 2

[0022] The preparation method of the VCM-BA-VAC-organic silicon copolymer emulsion, the steps are:

[0023] (1) Monomer pre-emulsification: Weigh 540 parts of vinyl chloride, 360 parts of butyl acrylate, 180 parts of vinyl acetate, 18 parts of acrylic acid, 135 parts of vinyltrimethoxysilane, and 6 parts of emulsifier OP-4. Stir and emulsify in the polymerization reactor for 2 hours to obtain the emulsified monomer solution for subsequent use;

[0024] (2) Preparation and addition of additives: Take 250 parts of deionized water, 12 parts of emulsifier sodium dodecylbenzene sulfonate, 12 parts of sodium dodecyl sulfate and 12 parts of OP-100, and the preservative PVP K- 30 6 parts, fully stirred and dissolved, then added to step (1) pre-emulsification polymerization reactor; 4.8 parts of initiator ammonium persulfate were dissolved in 150 parts of water for later use;

[0025] (3) Reaction: by volume, first take 1 / 4 of the pre-emulsified monomer in step (1) and add it to the p...

Embodiment 3

[0028] The preparation method of the VCM-BA-VAC-organic silicon copolymer emulsion, the steps are:

[0029] (1) Monomer pre-emulsification: Weigh 450 parts of vinyl chloride, 320 parts of butyl acrylate, 135 parts of vinyl acetate, 16 parts of acrylic acid, 98 parts of vinyltrimethoxysilane, and 3.7 parts of emulsifier OP-4. Stir and emulsify in the polymerization reactor for 2 hours to obtain the emulsified monomer solution for subsequent use;

[0030] (2) Preparation and addition of additives: Take 250 parts of deionized water, 8 parts of emulsifier sodium dodecylbenzene sulfonate, 8 parts of sodium dodecyl sulfate and 11 parts of OP-100, and the preservative PVP K- 30 4 parts, fully stirred and dissolved, then added to step (1) pre-emulsification polymerization reactor; take 4 parts of initiator ammonium persulfate and dissolve in 150 parts of water for later use;

[0031] (3) Reaction: by volume, first take 1 / 3 of the pre-emulsified monomer in step (1) and add it to the p...

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Abstract

The invention relates to a VCM (Vinyl Chloride Monomer)-BA (Butyl Acrylate)-VAC (Vinyl Acetate)-organic silicon copolymer emulsion which mainly relates to a film forming substrate for a topcoat and an aqueous industrial paint and belongs to the technical field of the industrial paint. The emulsion is polymerized by using vinyl chloride, butyl acrylate, vinyl acetate, acrylic acid and vinyl trimethoxy silane as monomers, sodium dodecyl benzene sulfonate, lauryl sodium sulfate, nonionic surfactants OP-100 and OP-4 as an emulgator, PVPK-30 as a glue retainer, water-soluble potassium persulfate and ammonium persulfate as an initiator. Compared with other aqueous paints, the emulsion provided by the invention used as the aqueous industrial paint has better water tolerance, corrosion resistance, and weather fastness, high film hardness, good compatibility with pigments, strong adhesive force and relatively low cost. The emulsion provided by the invention is qualified in mechanical stability, calcium ion stability and thermal stability, and no demulsification and layering situations occur within a year.

Description

technical field [0001] The invention relates to a VCM-BA-VAC-organic silicon copolymer emulsion and a preparation method thereof, that is, a vinyl chloride-butyl acrylate-vinyl acetate-acrylic acid-vinyl trimethoxysilane copolymer emulsion and a preparation method thereof. The invention mainly relates to a film-forming substance used for surface coating and water-based industrial paint, and belongs to the technical field of industrial paint. Background technique [0002] The film-forming substances refer to all the remaining components in the paint except for the volatile solvents, which are the substances that make up the coating film. Film-forming substances are divided into two categories: main film-forming substances and auxiliary film-forming substances. [0003] The main film-forming substances refer to substances that can form a continuous dry film with a certain strength alone, such as organic polymer substances such as various resins and drying oils, and inorganic ...

Claims

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Application Information

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IPC IPC(8): C08F214/06C08F220/18C08F218/08C08F220/06C08F230/08C09D127/06
Inventor 李川项洪伟申淑婷郭运华
Owner WUXI HONGHUI NEW MATERIALS TECH
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