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Metal antirust emulsion and its preparation method and application

A metal rust prevention and emulsion technology, applied in anti-corrosion coatings, coatings, etc., can solve the problems of poor coating film compactness, insufficient rust resistance, poor coating film shielding performance, etc., and achieve excellent salt water resistance and salt spray resistance. , excellent anti-rust ability, good adhesion and water resistance effect

Active Publication Date: 2018-06-15
SHANGHAI BAOLIJIA NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the styrene-acrylic emulsion coating film has poor compactness, and the coating film has poor water vapor shielding performance, and as a water-based anti-rust coating for steel structures, there are still problems such as poor coating film adhesion and insufficient anti-rust ability.

Method used

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  • Metal antirust emulsion and its preparation method and application
  • Metal antirust emulsion and its preparation method and application

Examples

Experimental program
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Effect test

preparation example Construction

[0087] The present invention also provides a kind of preparation method of metal antirust emulsion, specifically comprises the following steps:

[0088] (1) Stir and mix 30-50wt% of the formula content water and 40-55wt% of the composite emulsifier, then slowly add ethylenic monomers, functional monomers and acrylate phosphate while stirring, and perform pre-emulsification to obtain monomer pre-emulsion;

[0089] (2) Stir and mix 40-55wt% of the formula content water and the remaining compound emulsifier evenly, raise the temperature to 81-83°C, add 5-15 wt% of the total mass of the initiator, and react for 3-5 minutes, then add 5-8% of the weight of the monomer pre-emulsion obtained in step (1), continue to react until the emulsion is bluish;

[0090] (3) Heating the emulsion obtained in step (2), keeping the temperature at 84-86°C, adding the remaining initiator and monomer pre-emulsion dropwise at the same time, and adding active organic Silane, control the total time of ...

Embodiment approach 1

[0100] Embodiment 1, a metal antirust emulsion, calculated by weight percentage, raw materials include: vinyl monomer 35-50wt%, which is a mixture of at least one selected from methacrylates or acrylates and styrene ; Functional monomer 1.5-5wt%, is a mixture of acrylate phosphate and active organosilane; functional monomer 0.5-3wt%, is a mixture of at least one selected from acrylic acid or methacrylic acid and acrylamide; emulsifier 1 ~7 wt%, selected from branched alkyl alcohol polyoxyethylene ether phosphate monoester, alkylphenol phosphate, acrylic polyether phosphate, 3-allyloxy-1-hydroxy-1-propanesulfonate And a composite emulsifier obtained by compounding two or more of the polymerizable sulfate emulsifiers; initiator 0.1-0.3wt%, pH regulator 0.05-2.5wt%, water 45-60wt%.

Embodiment approach 2

[0101] Embodiment 2 is the same as Embodiment 1, except that the raw materials include: 35% to 50% by weight of ethylenic monomer, which is a mixture of methyl methacrylate, butyl acrylate, isopropyl acrylate and styrene, and the styrene The content accounts for more than 15 wt% of the total mass of the emulsion raw materials; the functional monomer is 1.5 to 5 wt%, which is a mixture of acrylate phosphate and vinyl-containing active organosilane, and the content of vinyl-containing active organosilane accounts for the total amount of emulsion raw materials. More than 1 wt% of the mass; 0.5-3 wt% of functional monomer, which is a mixture of at least one selected from acrylic acid or methacrylic acid and acrylamide; 1-7 wt% of emulsifier, which is branched chain alkyl alcohol polyoxyethylene Compound emulsifier obtained by compounding ether phosphate monoester, alkylphenol phosphate, acrylic polyether phosphate, 3-allyloxy-1-hydroxy-1-propane sulfonate and polymerizable sulfate ...

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Abstract

The invention aims to provide a metal antirust emulsion. The metal antirust emulsion is prepared from raw materials in percentage by weight as follows: 35%-50% of an allyl monomer, 1.5%-5% of a functional monomer, 0.5%-3% of a function monomer, 1%-7% of an emulsifier, 0.1%-0.3% of an initiator, 0.05%-2.5% of a pH regulator and 45%-60% of water, wherein the allyl monomer is a mixture of styrene and at least one of methacrylate or acrylic ester; the functional monomer is a mixture of acrylic phosphate and active organosilane; the function monomer is a mixture of acrylamide and at least one of acrylic acid or methacrylic acid; the emulsifier is a compound emulsifier prepared from two or more of branched alkyl alcohol polyoxyethylene ether phosphomonoester, alkylphenol phosphate, acrylic polyether phosphate, 3-allyloxy-1-hydroxy-1-propane sulfonate and a polymerizable sulphate emulsifier through compounding. Poly(bisphenol A acryloxyethyl phosphate).

Description

technical field [0001] The invention relates to an emulsion and a preparation method thereof, more particularly to a metal antirust emulsion and a preparation method thereof. Background technique [0002] As environmental protection is more and more concerned by people, research on non-toxic and low-toxic water-based anti-rust coatings has become an important direction for the development of anti-rust coatings. In recent years, with the country's restrictions on VOC emissions, water-based coatings have developed rapidly, coupled with serious metal corrosion problems, providing a huge market for the application of water-based coatings to replace oil-based coatings in industrial metal anti-corrosion coatings. Because acrylic polymers have the advantages of heat resistance, weather resistance, corrosion resistance, stain resistance, gloss and color retention, high adhesion and low price, styrene-acrylic emulsion synthesized with hard monomer styrene is often It is used as a fi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F212/08C08F220/14C08F220/18C08F220/56C08F220/06C08F230/02C08F230/08C08F2/26C08F2/30C08K7/26C08K9/04C09D125/14C09D5/08
CPCC08F212/08C08K7/26C08K9/04C09D5/08C09D125/14C08F220/1804C08F220/14C08F220/1808C08F220/56C08F220/06C08F230/02C08F230/08
Inventor 王钢袁宜恩王邦宪
Owner SHANGHAI BAOLIJIA NEW MATERIAL CO LTD
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