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Antibacterial antifouling agent and antibacterial antifouling coating

An antifouling coating and antifouling agent technology, applied in the field of coatings, can solve the safety and durability hazards of marine concrete structures, economic losses, fouling of marine concrete structures, etc., to achieve effective anti-biological adhesion and prolong service life , Improve the effect of safety and durability

Inactive Publication Date: 2015-11-04
GUANGXI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under long-term immersion in seawater, various organisms in the ocean, such as seaweed, shellfish, molluscs, etc., will adhere to the concrete, causing deep damage to the concrete structure due to surface damage, resulting in serious fouling of the marine concrete structure. Not only cause economic loss, but also cause serious harm to the safety and durability of marine concrete structures

Method used

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  • Antibacterial antifouling agent and antibacterial antifouling coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Step S1: Preparation of polyaspartic acid ester, code name PAE-a

[0029] The amino-terminated polyether JeffamineD-2000 and diethyl maleate are in the ratio n(—NH 2 ): n(—C=C—)=1:1 metering. Add JeffamineD-2000 into the reaction kettle equipped with agitator and heating temperature control device, pass nitrogen gas and raise the temperature to 40°C, add diethyl maleate dropwise at a rate of one drop every two seconds, after the addition is completed, nitrogen protection Stir and heat to 80°C, keep warm for 24 hours, cool down and discharge to obtain polyaspartic acid ester.

[0030] Step S2: Prepare coating A component

[0031] The dosage of 2,4'-diphenylmethane diisocyanate MDI-50 polyoxypropylene diol PPG2000 is measured according to NCO%=15% in the generated prepolymer. Add 2,4'-diphenylmethane diisocyanate MDI-50 into a reaction kettle equipped with a stirrer and a heating temperature control device, blow nitrogen gas and raise the temperature to 40°C, and add p...

Embodiment 2

[0040] Step S1: Preparation of polyaspartic acid ester, code PAE-b

[0041] Jeffamine T-5000 and diethyl maleate by substance ratio n(—NH 2 ): n(—C=C—)=1:1 metering. Add Jeffamine T-5000 into a reaction kettle equipped with a stirrer and a heating temperature control device, pass nitrogen gas and raise the temperature to 40°C, add diethyl maleate dropwise at a rate of one drop every two seconds, after the addition is complete, nitrogen Stir and heat to 80°C under protection, keep warm for 24 hours, cool down and discharge to obtain polyaspartic acid ester.

[0042] Step S2: Prepare coating A component

[0043] The amount of 2,4'-diphenylmethane diisocyanate MDI-50 and polyoxypropylene diol PPG2000 is measured according to NCO%=15% in the prepolymer produced. Add 2,4'-diphenylmethane diisocyanate MDI-50 into a reaction kettle equipped with a stirrer and a heating temperature control device, blow nitrogen and raise the temperature to 40°C, add polyoxypropylene glycol PPG2000 ...

Embodiment 3

[0053] Step S1: Preparation of polyaspartic acid ester, code PAE-c:

[0054] Jeffamine D-230 and diethyl maleate by substance ratio n(—NH 2 ): n(—C=C—)=1:1 metering. Add Jeffamine D-230 into a reaction kettle equipped with a stirrer and a heating temperature control device, blow nitrogen and raise the temperature to 40°C, add diethyl maleate dropwise at a rate of one drop every two seconds, after the addition is complete, nitrogen Stir and heat to 80°C under protection, keep warm for 24 hours, cool down and discharge to obtain polyaspartic acid ester.

[0055] Step S2: Prepare coating A component

[0056] The amount of 2,4'-diphenylmethane diisocyanate MDI-50 and polyoxypropylene diol PPG2000 is measured according to NCO%=15% in the prepolymer produced. Add 2,4'-diphenylmethane diisocyanate MDI-50 into a reaction kettle equipped with a stirrer and a heating temperature control device, blow nitrogen and raise the temperature to 40°C, add polyoxypropylene glycol PPG2000 dropw...

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Abstract

The invention provides an antibacterial antifouling agent and antibacterial antifouling coating. The antibacterial antifouling agent is zinc oxide composite powder where shell powder load is doped with magnesium oxide and comprises shell powder, the magnesium oxide and zinc oxide. The mass ratio of the shell powder to the zinc oxide is (1-2) to 1. The molar ratio of the magnesium oxide to the zinc oxide is (0.01-0.5) to 1. Due to the adoption of the technical scheme, the waste shell powder is effectively utilized, and the application field of the waste shell powder in the aspect of marine coating is widened. The surface of concrete is coated with the coating prepared through the technical scheme, corrosion of seawater and corrosive ions and the like in the seawater can be prevented, the concrete can have an effective biological adhesion preventing function when soaked in the seawater for a long time, and the safety and the durability of a marine concrete structure is improved. The antibacterial antifouling coating has the antibacterial antifouling function and meanwhile has the light-emitting performance and plays a marine engineering role.

Description

technical field [0001] The invention belongs to the technical field of coatings, in particular to an antibacterial and antifouling agent and an antibacterial and antifouling coating. Background technique [0002] With the acceleration of the utilization of marine space, marine concrete structure projects, such as piers, breakwaters, sea airports, sea lighthouses, submarine tunnels and sea-crossing bridges, are more and more widely used. Under long-term immersion in seawater, various organisms in the ocean, such as seaweed, shellfish, molluscs, etc., will adhere to the concrete, causing deep damage to the concrete structure due to surface damage, resulting in serious fouling of the marine concrete structure. Not only cause economic losses, but also cause serious harm to the safety and durability of marine concrete structures. Contents of the invention [0003] In view of the above technical problems, the present invention discloses an antibacterial and antifouling agent an...

Claims

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Application Information

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IPC IPC(8): C09D5/16C09D5/22C09D175/08C09D175/02C09D7/12
Inventor 黄映恒覃筱燕韦菲廖森
Owner GUANGXI UNIV
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