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Metal antirust emulsion as well as preparation method and application thereof

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

Active Publication Date: 2016-09-21
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 as well as preparation method and application thereof
  • Metal antirust emulsion as well as preparation method and application thereof

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 e...

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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 ...

Claims

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Application Information

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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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