Water-based composite latex applied to preparation of hydrophobic aluminum foil and synthesis process of water-based composite latex

A composite latex and synthetic process technology, applied in coatings, anti-corrosion coatings, etc., can solve the problems of large polarity difference between silicone hydrophobic agent and main resin, deterioration of mechanical properties of paint film, poor compatibility of two phases, etc., to achieve Excellent hydrophobicity, good construction efficiency and good mechanical properties

Active Publication Date: 2022-05-31
ZHENJIANG JINTIANCHEN NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, the publication number is: The invention patent of CN109749619 discloses a super-hydrophobic and stain-resistant UV coating and its preparation method. The polarity difference between the silicon hydrophobic agent and the main resin is large, and the compatibility of the two phases is poor, which leads to the separation of the two phases that make up the paint film during curing, the deterioration of the mechanical properties of the paint film, and even cracking.

Method used

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  • Water-based composite latex applied to preparation of hydrophobic aluminum foil and synthesis process of water-based composite latex
  • Water-based composite latex applied to preparation of hydrophobic aluminum foil and synthesis process of water-based composite latex
  • Water-based composite latex applied to preparation of hydrophobic aluminum foil and synthesis process of water-based composite latex

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A water-based composite latex used in the preparation of hydrophobic aluminum foil and its synthesis process. It is characterized in that its composition and relative proportions are:

[0026]

[0027]

[0028] Its synthesis process is as follows:

[0029] Step 1: Mix polyethylene glycol dimethacrylate with hydrogen-containing silicone oil, then add a platinum catalyst of 3ppm relative to the total mass of the two reactants, mix and stir, and react for 1 hour at a temperature range of 150°C to obtain two Polyethylene glycol methacrylate grafted with hydrogen-containing silicone oil.

[0030] Step 2: Mix polyethylene glycol dimethacrylate grafted hydrogen-containing silicone oil with acrylate monomer mixture, then add anionic emulsifier, and gradually add part of water and part of water-based initiator at the speed of high-speed mixer at 1000 rpm Agent, both are relative total amount 30%wt and 30%wt respectively. Under high-speed stirring, a pre-emulsion is obta...

Embodiment 2

[0040] A water-based composite latex used in the preparation of hydrophobic aluminum foil and its synthesis process. It is characterized in that its composition and relative proportions are:

[0041]

[0042] Its synthesis process is as follows:

[0043] Step 1: Mix polyethylene glycol dimethacrylate with hydrogen-containing silicone oil, then add a platinum catalyst of 4 ppm relative to the total mass of the two reactants, mix and stir, and react for 2 hours at a temperature range of 130°C to obtain di Polyethylene glycol methacrylate grafted with hydrogen-containing silicone oil.

[0044] Step 2: Mix polyethylene glycol dimethacrylate grafted hydrogen-containing silicone oil with acrylate monomer mixture, then add anionic emulsifier, and gradually add part of water and part of water-based initiator at the speed of high-speed mixer at 1200 rpm agent, both of which are respectively 40%wt and 40%wt relative to the total amount. Under high-speed stirring, a pre-emulsion is...

Embodiment 3

[0052] A water-based composite latex used in the preparation of hydrophobic aluminum foil and its synthesis process. It is characterized in that its composition and relative proportions are:

[0053]

[0054] Its synthesis process is as follows:

[0055] Step 1: Mix polyethylene glycol dimethacrylate with hydrogen-containing silicone oil, then add a platinum catalyst of 5 ppm relative to the total mass of the two reactants, mix and stir, and react for 5 hours at a temperature range of 120°C to 120°C , to obtain hydrogen-containing silicone oil grafted with polyethylene glycol dimethacrylate.

[0056] Step 2: Mix polyethylene glycol dimethacrylate grafted hydrogen-containing silicone oil with acrylate monomer mixture, then add anionic emulsifier, and gradually add part of water and part of water-based initiator at the speed of high-speed mixer at 1400 rpm agent, both of which are respectively 50%wt and 45%wt relative to the total amount. Under high-speed stirring, a pre-emu...

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Abstract

The invention relates to water-based composite latex applied to preparation of hydrophobic aluminum foil and a synthesis process of the water-based composite latex. The water-based composite latex is prepared from the following main raw materials: water, polyethylene glycol dimethacrylate grafted hydrogen-containing silicone oil, an acrylate monomer mixture, an anionic emulsifier and a water-based initiator. The preparation method comprises the following steps: firstly, carrying out a reaction on polyethylene glycol dimethacrylate and hydrogen-containing silicone oil by utilizing block graft polymerization, enabling excessive polyethylene glycol dimethacrylate to react with hydrogen-containing silicone oil, and reserving a part of carbon-carbon double bonds capable of continuously reacting after the reaction; and mixing the obtained product with an acrylate monomer mixture, and adding an anionic emulsifier and a water-based initiator. And the water-based composite latex is prepared by utilizing emulsion polymerization. After a coalescing agent, a water-based flatting agent, a water-based defoaming agent and a wetting dispersant are added, the aluminum foil with the hydrophobic property is prepared according to the coating process of an aluminum foil coating, namely uncoiling, degreasing, spraying and cleaning, drying, coating, drying and curing, cooling, coiling, slitting and packaging means.

Description

technical field [0001] The invention relates to the field of anti-corrosion coatings, in particular to a water-based composite latex used in the preparation of hydrophobic aluminum foils and a synthesis process thereof. Background technique [0002] In the field of coating anticorrosion, the traditional single protection function can no longer meet the market demand. Coatings with superhydrophobic properties, taking advantage of the unique properties of their surfaces, have attracted great attention from the material industry for their excellent performance in heat transfer, heat transfer, corrosion resistance, and anti-condensation. Industrial aluminum foil has important applications in refrigeration, heat dissipation and other fields. Building superhydrophobicity on its surface can further improve its performance and prolong its service life. The thickness of the aluminum foil is between 0.01 mm and 1 mm, but the existing super-hydrophobic surface preparation methods have...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F285/00C08F212/08C08F220/14C08F220/18C08F220/20C08F2/26C09D151/00C09D5/08
CPCC08F285/00C08F2/26C09D151/00C09D5/08C08F212/08C08F220/14C08F220/1808C08F220/20Y02E60/10
Inventor 李永明李为立刘润兴
Owner ZHENJIANG JINTIANCHEN NEW MATERIAL
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