Anticorrosive paint with rust for ships and preparation method thereof

A rust-resistant anti-corrosion technology for ships, applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of anti-corrosion of ship equipment, achieve good anti-rust effect, good durability and weather resistance, The effect of simple process

Inactive Publication Date: 2018-09-14
WISON NANTONG HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the fact that the rusty coatings in the prior art cannot meet the anti-corrosion requirements of ship equipment, it is necessary to design a method that can be directly painted on the surface of ship rusted steel, has good anti-rust effect,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example one

[0021] The invention discloses a rusty anticorrosive paint for ships, which is used to directly paint the surface of the rusty steel of ships. The formula of the rusty anticorrosive paint for ships consists of the following components in terms of mass percentage: styrene-acrylic emulsion 20%, ring Oxygen resin 15%, modified acrylic resin 10%, rust stabilizer 3%, filler 50%, dispersant 0.3%, defoamer 0.2%, and coupling agent 1.5%. The rust stabilizing agent is zinc oxide and diphenylguanidine phosphate, and the mass ratio of the zinc oxide and the diphenylguanidine phosphate is 1:1. The filler is iron oxide red. The dispersant is polyacrylamide. The antifoaming agent is a polysiloxane antifoaming agent, and the coupling agent is a silane coupling agent.

[0022] Performance Testing:

[0023] (1) Adhesion: Adhesion tested by hundred grid method is 0;

[0024] (2) Salt spray resistance: Destructive neutral salt spray test for 300h, unilateral corrosion is less th...

Example Embodiment

[0026] Example two

[0027] This embodiment discloses a method for preparing a rusty anticorrosive paint for ships. The rusty anticorrosive paint for ships in this embodiment adopts the ratio of the first embodiment, and the other The preparation method includes the following steps:

[0028] S1. Preparation of materials: styrene-acrylic emulsion, epoxy resin, modified acrylic resin, zinc oxide, diphenylguanidine phosphate, iron oxide red, polyacrylamide, polysiloxane antifoaming agent and silane coupling agent according to the examples Prepare materials according to the ratio of the first one;

[0029] S2. Mixing: Add epoxy resin and modified acrylic resin in sequence to styrene-acrylic emulsion, stir and dissolve in sequence add zinc oxide, diphenylguanidine phosphate, iron oxide red, polyacrylamide, polysiloxane defoamer And silane coupling agent, stir evenly, add filler and grind fineness to 5μm, check viscosity, filter, discharge and pack after passing the test.

[0030] Test: O...

Example Embodiment

[0031] Example three

[0032] The invention discloses a rusty anticorrosive paint for ships, which is used to directly paint the surface of the rusty steel of ships. The formula of the rusty anticorrosive paint for ships consists of the following components in terms of mass percentage: 20% styrene-acrylic emulsion, ring Oxygen resin 20%, modified acrylic resin 10%, rust stabilizer 4%, filler 43.8%, dispersant 0.1%, defoamer 0.1% and coupling agent 2%.

[0033] Performance Testing:

[0034] (1) Adhesion: Adhesion tested by hundred grid method is 0;

[0035] (2) Salt spray resistance: Destructive neutral salt spray test for 300h, unilateral corrosion is less than 1mm;

[0036] (3) Corrosion media resistance: After soaking in 3.5% sodium chloride solution for 200 hours, there is no blistering or rust, and the finished product is packaged.

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PUM

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Abstract

The invention discloses anticorrosive paint with rust for ships, which is used for directly coating the surface of a ship corroded steel product. A formula of the anticorrosive paint with the rust forthe ships comprises the following components in percentage by mass: 20 to 25 percent of styrene-acrylic emulsion, 15 to 20 percent of epoxy resin, 5 to 20 percent of modified acrylic resin, 3 to 5 percent of rust stabilizing agent, 10 to 50 percent of filler, 0.1 to 0.3 percent of dispersant, 0.1 to 0.4 percent of de-foaming agent and 1 to 3 percent of coupling agent. The invention also disclosesa preparation method of the anticorrosive paint with the rust for the ships. The anticorrosive paint with the rust for the ships, disclosed by the invention, can be directly brushed and coated on thesurface of the ship corroded steel product and is applicable to rust prevention of ship steel product surfaces with rust-corroded and hard oxidized skin layers or old paint films; in a coating process, the anticorrosive paint can permeate a rust layer and seal the whole rust layer; the anticorrosive paint has strong permeability, high coating attachment force and good antirust effect, can be usedunder bad conditions and has relatively good durability and weather resistance.

Description

technical field [0001] The invention relates to the technical field of rusty coatings, in particular to a rusty anticorrosion coating for ships and a preparation method thereof. Background technique [0002] Ships are severely corroded in seawater environments, requiring the use of coatings with excellent performance for corrosion protection. Protective coatings for ships have a certain service life, such as: 3 years or 5 years. When maintenance is carried out beyond the service life, it is not uncommon to see that some structures have developed severe corrosion due to failure of the surface coating. These rust layers must be removed during maintenance before repainting. For ships, due to the large size and the limitation of maintenance time during operation, it is difficult to remove the rust layer on the surface of the steel substrate. If the rust layer is not completely removed, it will affect the bonding force between the coating and the steel substrate, which will sh...

Claims

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Application Information

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IPC IPC(8): C09D125/14C09D163/00C09D133/00C09D5/08C09D7/61C09D7/63C09D7/65
CPCC09D125/14C08L2205/035C09D5/08C09D7/61C09D7/63C09D7/65C09D163/00C08L63/00C08L33/00C08K13/02C08K3/22C08K5/31C08L25/14
Inventor 宦重阳
Owner WISON NANTONG HEAVY IND
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