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Water-based epoxy modified phosphorus-containing styrene-acrylic antirust emulsion and synthesis method thereof

A water-based epoxy and anti-rust emulsion technology, used in epoxy resin coatings, anti-corrosion coatings, coatings, etc., can solve the problem of no performance test, no way to know the advantages and disadvantages of emulsion performance, no detailed introduction of anti-rust emulsion formula and Process and other issues, to achieve the effect of inhibiting flash corrosion, preventing demulsification, and low construction requirements

Inactive Publication Date: 2011-07-20
DALIAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is only one example in the patent, and there is no performance test, so it is impossible to know the performance of the prepared emulsion
[0007] Most of the antirust patents that have been disclosed are all such as CN101654580A, which introduces the formula of antirust coatings. The focus is on the ratio of emulsion and pigments and fillers in the antirust coatings and the selection of pigments and fillers. There is no detailed description of the antirust coatings. Emulsion formula and process

Method used

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  • Water-based epoxy modified phosphorus-containing styrene-acrylic antirust emulsion and synthesis method thereof
  • Water-based epoxy modified phosphorus-containing styrene-acrylic antirust emulsion and synthesis method thereof
  • Water-based epoxy modified phosphorus-containing styrene-acrylic antirust emulsion and synthesis method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The raw material formula of water-based epoxy modified phosphorus-containing styrene-acrylic antirust emulsion is shown in Table 1:

[0037] Table 1 Formula of water-based epoxy modified phosphorus-containing styrene-acrylic antirust emulsion

[0038]

[0039] Its synthetic method:

[0040] ① Preparation of pre-emulsion: Add 1 g of nonylphenol polyoxyethylene (4) ether ammonium sulfate, 40 g of deionized water, and 1 g of phosphate ester functional monomer PAM-2001 g into a pre-emulsification kettle equipped with a stirring device. After stirring evenly, Add 3g of epoxy resin, 40g of styrene, 38g of butyl acrylate, and 1.7g of methacrylic acid, and stir for 30 minutes to obtain a pre-emulsion.

[0041] ② Add 0.3 g of nonylphenol polyoxyethylene (4) ether ammonium sulfate, 40 g of deionized water, and 0.28 g of sodium bicarbonate into the reaction kettle equipped with a stirring device, a reflux condenser and a dropping funnel, start stirring and raise the temperatur...

Embodiment 2

[0046] The raw material formula of water-based epoxy modified phosphorus-containing styrene-acrylic antirust emulsion is shown in Table 2:

[0047] Table 2 Waterborne epoxy modified phosphorus-containing styrene-acrylic antirust emulsion formula

[0048]

[0049] Its synthetic method:

[0050] ① Preparation of pre-emulsion: Add 1 g of nonylphenol polyoxyethylene (4) ether ammonium sulfate, 2.5 g of OP-10 emulsifier, 40 g of deionized water, and PAM -2002.9g, after stirring evenly, add 6.1g of epoxy resin, 40g of styrene, 38g of butyl acrylate, and 1.7g of methacrylic acid, and stir for 30min to obtain a pre-emulsion.

[0051] ② Add 0.3 g of nonylphenol polyoxyethylene (4) ether ammonium sulfate, 40 g of deionized water, and 0.28 g of sodium bicarbonate into the reaction kettle equipped with a stirring device, a reflux condenser and a dropping funnel, start stirring and raise the temperature.

[0052] ③When the temperature rises to 60°C, add 0.27g and 8.6g of ammonium pers...

Embodiment 3

[0056] The raw material formula of water-based epoxy modified phosphorus-containing styrene-acrylic antirust emulsion is shown in Table 3:

[0057] Table 3 Waterborne epoxy modified phosphorus-containing styrene-acrylic antirust emulsion formula

[0058]

[0059] Its synthetic method:

[0060] ① Preparation of pre-emulsion: Add 1 g of nonylphenol polyoxyethylene (4) ether ammonium sulfate, 2 g of OP-10 emulsifier, 0.4 g of sodium lauryl sulfate, and deionized water into a pre-emulsification kettle equipped with a stirring device. 40g, 2.5g of phosphate ester functional monomer PAM-200, after stirring evenly, add 3g of epoxy resin, 40g of styrene, 38g of butyl acrylate, and 1.7g of methacrylic acid, and stir for 30min to obtain a pre-emulsion.

[0061] ② Add 0.3 g of nonylphenol polyoxyethylene (4) ether ammonium sulfate, 40 g of deionized water, and 0.28 g of sodium bicarbonate into the reaction kettle equipped with a stirring device, a reflux condenser and a dropping funn...

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Abstract

The invention relates to a water-based epoxy modified phosphorus-containing styrene-acrylic antirust emulsion and a synthesis method thereof. The water-based epoxy modified phosphorus-containing styrene-acrylic antirust emulsion is prepared by a conventional emulsion polymerization method, and can be crosslinked with a crosslinking agent and cured at room temperature; and the particle size of thewater-based epoxy modified phosphorus-containing styrene-acrylic antirust emulsion is 80-140nm, the solid content is 40-50%, and the minimum filming temperature is not higher than 35 DEG C. The emulsion is prepared by introducing epoxy-group-containing epoxy resin and phosphate functional monomer with flash-etching-resistant function into the conventional emulsion polymerization process of acrylate. The polymerization technique is simple and practical, almost no gel is generated in the polymerization process, and the storage stability of the emulsion can reach more than 1 year. When the synthesized emulsion is crosslinked with the curing agent to form a film, a three-dimensional network structure is generated, and an efficiently-antirust paint film with high adhesive force can be formed after the emulsion is completely cured. When the water-based epoxy modified phosphorus-containing styrene-acrylic antirust emulsion is used as water-based antirust paint, the adhesive force can reach Level 1, and the water absorptivity is smaller than or equal to 10%; and the water-based epoxy modified phosphorus-containing styrene-acrylic antirust emulsion does not bubble after being soaked in a 3% NaCl solution for 450 hours, and has favorable corrosion resistance.

Description

technical field [0001] The invention belongs to the field of antirust paint industry, and in particular relates to a water-based epoxy-modified styrene-acrylic antirust emulsion containing a phosphate functional monomer with high adhesion and a synthesis method thereof. Background technique [0002] Metal corrosion has become the world's largest waste. The annual economic losses caused by metal corrosion in developed countries account for about 4% of their gross national product, exceeding the sum of the annual economic losses caused by various natural disasters. According to incomplete statistics, the economic loss caused by accidents caused by metal corrosion in my country in 2002 was as high as 500 billion yuan, equivalent to 5% of the gross national product in the same year. In order to prevent metal corrosion and reduce unnecessary economic losses, people have studied many methods. At present, the most convenient and economical method is to protect the metal surface co...

Claims

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Application Information

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IPC IPC(8): C08L25/14C08L63/02C08F212/08C08F220/18C08F220/06C09D125/14C09D163/02C09D5/08
Inventor 刘国军徐晶张桂霞刘素花刘俊龙
Owner DALIAN POLYTECHNIC UNIVERSITY
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