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Heavy-duty anticorrosive coating for metal and method for preparing same

A heavy-duty anti-corrosion and coating technology, applied in anti-corrosion coatings, coatings and other directions, can solve the problems of affecting promotion, poor heat resistance, easy to stick back, etc., and achieve the effect of improving heat resistance, good heat resistance and high thermal conductivity

Inactive Publication Date: 2013-05-29
ZHENJIANG YINHAI ALUMINUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, coatings based on pure acrylic resins have poor heat resistance, especially thermoplastic acrylic coatings, which are prone to sticking and dusting at high temperatures, and become brittle at low temperatures, which affect their further promotion.

Method used

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  • Heavy-duty anticorrosive coating for metal and method for preparing same
  • Heavy-duty anticorrosive coating for metal and method for preparing same
  • Heavy-duty anticorrosive coating for metal and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1. Synthesis of vinyl-terminated silicone oil copolymerized acrylic resin

[0023] (1) Prepare components according to mass percentage content

[0024]

[0025] (2) Preparation

[0026] Stir and mix 25 parts of methyl methacrylate, 15 parts of styrene, 4 parts of isooctyl acrylate, 2 parts of hydroxyethyl acrylate and 1.2 g of azobisisobutyronitrile in proportion to obtain a mixed reaction monomer. Add 50 parts of butyl acetate and 10% of the total amount of mixed reaction monomers, namely 4.6 parts, and raise the temperature to 70°C. After reacting for 1 hour, add the remaining mixed monomers dropwise. The time for adding monomers is 1 hour. Then keep warm at 70°C for 1 hour, then add 2.5 parts of vinyl-terminated silicone oil (80000mPa·s) and 0.3 part of azobisisobutyronitrile, control the temperature at 85°C, react for 3 hours, cool down to room temperature, and discharge.

[0027] 2. Preparation of metal heavy-duty anti-corrosion coatings

[0028] (1) Prepare ...

Embodiment 2

[0033] 1. Synthesis of vinyl-terminated silicone oil copolymerized acrylic resin

[0034] (1) Prepare components according to mass percentage content

[0035]

[0036] (2) Preparation

[0037] Stir and mix 40 parts of methyl methacrylate, 10 parts of styrene, 2 parts of isooctyl acrylate, 1 part of hydroxyethyl acrylate and 0.8 parts of azobisisobutyronitrile in proportion to obtain a mixed reaction monomer. Add 41 parts of butyl acetate and 10% of the total amount of mixed reaction monomers, that is, 5.3 parts, raise the temperature to 75°C, react for 0.5 hours, then add the remaining mixed monomers dropwise, and the dropping time is 2 hours. After dripping, keep it warm at 75°C for 2 hours, then add 5 parts of vinyl-terminated silicone oil (20000mPa·s) and 0.2 part of azobisisobutyronitrile, control the temperature at 90°C, react for 2 hours, cool down to room temperature, and discharge .

[0038] 2. Preparation of metal heavy-duty anti-corrosion coatings

[0039] (1)...

Embodiment 3

[0044] 1. Synthesis of vinyl-terminated silicone oil copolymerized acrylic resin

[0045] (1) Prepare components according to mass percentage content

[0046]

[0047] (2) Preparation

[0048] Stir and mix 35 parts of methyl methacrylate, 12.5 parts of styrene, 6 parts of isooctyl acrylate, 4 parts of hydroxyethyl acrylate and 1.6 parts of azobisisobutyronitrile to obtain a mixed reaction monomer. Add 40 parts of butyl acetate and 5.75 parts of 10% of the total amount of the mixed reaction monomers, raise the temperature to 80°C, react for 0.3 hours, then add the remaining mixed monomers dropwise for 1.5 hours. After dropping, keep warm at 80°C for 1.5 hours, then add 0.5 parts of vinyl-terminated silicone oil (20000mPa·s) and 0.4 parts of azobisisobutyronitrile, control the temperature at 80°C, react for 5 hours, cool down to room temperature, and material.

[0049] 2. Preparation of metal heavy-duty anti-corrosion coatings

[0050] (1) Prepare components according to ...

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Abstract

The invention discloses a heavy-duty anticorrosive coating for metal and a method for preparing the same. The heavy-duty anticorrosive coating for metal is prepared from the following components in percent by weight: 20-35% of vinyl-terminated silicone-oil copolymerized acrylic resin, 20-45% of flaky zinc powder of 1,000 meshes, 10-20% of spherical zinc powder of 600-800 meshes, 5-10% of ferrophosphorus powder of 400-800 meshes, 1-2% of organic bentonite and 15-20% of butyl acetate. The method comprises the following steps of: synthesizing the vinyl-terminated silicone-oil copolymerized acrylic resin by polymerizing solutions, mixing the components, stirring at a high speed, and grinding uniformly until the fineness is less than 50mu m. The coating film formed after the coating is dried has the advantages of high drying speed and good mechanical performance, corrosion resistance and weather resistance and is suitable for the corrosion prevention and the decoration of general metal substrates such as the aluminum plate, the steel plate or the tin plate.

Description

technical field [0001] The invention belongs to the technical field of metal protective coatings, and relates to a bottom-surface-integrated metal heavy-duty anti-corrosion coating based on vinyl-terminated silicone oil copolymerized acrylic resin and a preparation method thereof. Background technique [0002] Traditional acrylic paints refer to acrylic acid (ester) and methacrylic acid (ester) as the main monomers, which are copolymerized with other vinyl-containing monomers to form acrylic copolymer resins, and then mixed with appropriate pigments, Fillers and additives are acrylic paints. Compared with other coatings such as alkyd resin and epoxy resin, it has the advantages of light color, color retention, gloss retention, good weather resistance, high gloss and hardness. However, the coatings based on pure acrylic resins have poor heat resistance, especially thermoplastic acrylic coatings, which are prone to sticking and dusting at high temperatures, and become brittle...

Claims

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Application Information

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IPC IPC(8): C09D151/08C09D5/10C08F290/06C08F220/14C08F212/08C08F220/18C08F220/28
Inventor 李为立张勤孙家麟
Owner ZHENJIANG YINHAI ALUMINUM