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Polysulfide oligomer modified acrylic resin as well as preparation method and application thereof

An acrylic resin and oligomer technology, which is applied in the field of polysulfide oligomer modified acrylic resin and its preparation, can solve the problems affecting water resistance and corrosion resistance of membranes, waste of resources, enlarged coating gaps, etc. Anti-corrosion effect, environmental problem solving, energy saving effect

Active Publication Date: 2022-02-25
国科广化精细化工孵化器(南雄)有限公司 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the particle size of the latex particles in the conventional preparation method is very large, which may cause the cracks in the coating to increase and affect the water resistance and corrosion resistance of the film.
[0003] Elemental sulfur in petrochemical products is often a waste in petroleum production, which not only causes environmental pollution but also causes a great waste of resources. The development and application of waste sulfur has become an urgent problem to be solved

Method used

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  • Polysulfide oligomer modified acrylic resin as well as preparation method and application thereof
  • Polysulfide oligomer modified acrylic resin as well as preparation method and application thereof
  • Polysulfide oligomer modified acrylic resin as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) Preparation of acrylic resin emulsion with core-shell structure

[0043] First emulsify the nuclear monomer: add the nuclear monomer of hexadecyl methacrylate, lauryl methacrylate and styrene in a 250ml four-necked flask with a mass ratio of 1:1:3, the total mass of the nuclear monomer 30g, then add emulsifier Span 80 and op-10, the total mass is 1.5g, add 40g of water, stir mechanically at room temperature for one hour, and the rotation speed is 600r / min. After the emulsification is completed, set up the reaction device. Stir mechanically at 140r / min, blow nitrogen, condense water, and keep the oil bath at a constant temperature of 70°C. Dissolve 0.4g of ammonium persulfate initiator in 10g of water, and slowly add it dropwise using a peristaltic pump at a rate of 0.5g / min. Until the obvious blue light appeared in the four-necked flask, the emulsified shell monomer and 1.2 g of initiator potassium persulfate dissolved in 20 g of water were added dropwise at 8 g / m...

Embodiment 2

[0048] (1) Preparation of acrylic resin emulsion with core-shell structure

[0049] First, the nuclear monomer is emulsified: the four-necked flask of 250ml is added with a mass ratio of hexadecyl methacrylate, lauryl methacrylate, and styrene nuclear monomer in a mass ratio of 1:1:3, and the total mass of the nuclear monomer is 30g, then add emulsifiers Span 80 and op-10, the total mass is 1.5g, add 40g of water, stir mechanically at room temperature for one hour, and the rotation speed is 600r / min. After the emulsification is completed, set up the reaction device. Stir mechanically at 140r / min, blow nitrogen, condense water, and keep the oil bath at a constant temperature of 74°C. Dissolve 0.4 g of ammonium persulfate initiator in 10 g of water, and slowly add in drops at a rate of 0.5 g / min using a peristaltic pump. Until obvious blue light appeared in the four-neck flask. Start to add the emulsified shell monomer and 1.2 g of initiator potassium persulfate dissolved in ...

Embodiment 3

[0054] (1) Preparation of acrylic resin emulsion with core-shell structure

[0055] First, the nuclear monomer is emulsified: the four-necked flask of 250ml is added with a mass ratio of hexadecyl methacrylate, lauryl methacrylate, and styrene nuclear monomer in a mass ratio of 1:1:3, and the total mass of the nuclear monomer is 40g, then add emulsifiers Span 80 and op-10, the total mass is 1.5g, add 40g of water, stir mechanically at room temperature for one hour, and the rotation speed is 600r / min. After the emulsification is completed, set up the reaction device. Stir mechanically at 220r / min, blow nitrogen, condense water, and keep the oil bath at a constant temperature of 78°C. Dissolve 0.4 g of ammonium persulfate initiator in 10 g of water, and slowly add in drops at a rate of 0.5 g / min using a peristaltic pump. Until obvious blue light appeared in the four-neck flask. Start to add the emulsified shell monomer and 1.2 g of initiator potassium persulfate dissolved in ...

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Abstract

The invention belongs to the field of metal organic anticorrosive coatings, and discloses polysulfide oligomer modified acrylic resin as well as a preparation method and an application thereof. According to the invention, the acrylic resin is modified by using the polysulfide oligomer, so that the corrosion resistance of the resin on the metal surface is improved. The polysulfide oligomer is an elemental sulfur / terpene copolymer with sulfydryl, latex particles in the acrylic resin emulsion have core-shell structures and reach the mesoporous size, a compact and continuous film can be formed on a resin coating, the shell layer contains very rich epoxy groups, crosslinking sites can be provided, the epoxy groups react with the sulfydryl in the polysulfide oligomer chain segment, so that the crosslinking density of the coating is uniformly distributed, the hydrophobic property of the coating can be greatly improved while the internal crosslinking density of the coating is increased and the density of the coating is improved, the anti-corrosion effect of the composite coating on the metal surface is improved, and the electrochemical corrosion of the metal surface is delayed.

Description

technical field [0001] The invention belongs to the field of metal-organic anti-corrosion coatings, in particular to a polysulfur oligomer modified acrylic resin and its preparation method and application. Background technique [0002] Metal corrosion has always been a big problem, especially in coastal areas, which are located in hot and humid areas and are accompanied by salt spray all year round. Ships entering and leaving the sea are soaked in seawater, which aggravates the corrosion of the metal materials of the hull. The presence of electrolytes such as salt water aggravates the electrochemical corrosion of metals, and once the metal surface is damaged, the salt water environment will accelerate corrosion, and it may seriously cause the machine to be scrapped. In order to slow down the corrosion of seawater on metal surfaces, organic anti-corrosion coatings have been developed. Organic coatings originated very early, but the early organic anti-corrosion coatings were ...

Claims

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Application Information

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IPC IPC(8): C08G81/02C09D187/00C09D5/08
CPCC08G81/021C09D187/005C09D5/08
Inventor 许凯林绮欣张天桂雪峰李东霞宋璇林琼许正敏王中新
Owner 国科广化精细化工孵化器(南雄)有限公司