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Protecting film composition based on modified silica sol emulsion

A technology of silica sol emulsion and protective film, which is applied in the direction of anti-corrosion coatings, coatings, etc., can solve the problems of single protective performance, low coating film strength, and poor peelability, and achieve improved appearance, high coating film strength, and pollution prevention. Effect

Inactive Publication Date: 2017-06-09
重庆市共赢包装制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing water-based protective coatings still have the disadvantages of low film strength, poor peelability and single protective performance.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0018] The protective film composition based on modified silica sol emulsion is prepared from the following raw materials in mass fraction: aliphatic water-based polyurethane emulsion 60-80%, modified silica sol 5-10%, titanium dioxide 2-5%, mica 3-5% %, water-based silicone oil 1~3%, sodium dodecylbenzenesulfonate 0.1~0.5%, alkali swelling acrylic acid thickener 0.5~1%, polyether modified dimethyl siloxane 0.3~0.6%, acrylic acid copolymer Potassium salt 0.1~0.5%, polyether modified silicone 0.1~0.5%, and the balance is distilled water; the aliphatic water-based polyurethane emulsion is made from the following raw materials in mass ratio: isophorone diisocyanate 40~80% 25~40 parts of polypropylene glycol, 25~80 parts of polyethylene glycol, 3~10 parts of dimethylol propionic acid, 50~80 parts of butanone, 5~12 parts of diethylenetriamine, 3~3 parts of triethylamine 9 parts, 1 to 3 parts of dibutyltin dilaurate, 40 to 80 parts of distilled water; the modified silica sol is made...

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Abstract

The invention discloses a protecting film composition based on a modified silica sol emulsion. The protecting film composition is prepared from the following raw materials in mass fraction: 60%-80% of an aliphatic waterborne polyurethane emulsion, 5%-10% of modified silica sol, 2%-5% of titanium dioxide, 3%-5% of mica, 1%-3% of waterborne silicone oil, 0.1%-0.5% of sodium dodecyl benzene sulfonate, 0.5%-1% of an alkali-swelling acrylate thickener, 0.3%-0.6% of polyether modified dimethyl siloxane, 0.1%-0.5% of acrylic copolymer sylvite, 0.1%-0.5% of polyether modified organosilicone and the balance of distilled water. According to the protecting film composition, the aliphatic waterborne polyurethane emulsion and the modified silica sol are compounded to form a film forming matter, so that the mechanical strength, peelable property and acid-base salt solution resistance of a coating can be improved; and the mica is taken as a filling, so that the properties such as hardness, strength, wear resistance and base material adhesive force of a coating paint film can be improved.

Description

technical field [0001] The invention relates to the field of packaging and decoration, in particular to a protective film composition based on modified silica sol emulsion. Background technique [0002] In order to prevent the materials or semi-products exposed to the atmosphere from being polluted, corroded and damaged, and prolong their service life, they are usually coated with good protective and peelable coatings on their surfaces for effective and temporary maintenance. Archive protection. In this way, it can not only isolate the invasion of air, salt spray, and microorganisms from the outside to achieve anti-corrosion effect; but also achieve the effect of cleaning and decontamination by adsorbing pollutants. Compared with solvent-based protective coatings, water-based protective coatings are safer and more environmentally friendly, so they are widely used in the field of product packaging and decoration. However, the existing water-based protective coatings still ...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D7/12C09D5/08C08G18/75C08G18/66C08G18/48C08G18/34C08G18/32C08G18/24
Inventor 谭春芳
Owner 重庆市共赢包装制品有限公司
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