High-elasticity polyurethane wear-resistant paint and preparation method of coating of high-elasticity polyurethane wear-resistant paint

Abstract

The invention discloses high-elasticity polyurethane wear-resistant paint and a preparation method of the coating of the high-elasticity polyurethane wear-resistant paint. The high-elasticity polyurethane wear-resistant paint comprises priming paint and finishing paint, wherein the priming paint comprises 100 parts of polyurethane prepolymer, 20-35 parts of anti-corrosion auxiliaries, 8-15 parts of curing agent and 50-70 parts of solvent; the finishing paint comprises 100 parts of polyurethane prepolymer, 30-45 parts of anti-corrosion auxiliaries, 8-15 parts of curing agent and 50-70 parts of solvent. The preparation method includes: preparing the priming paint; coating a protection part with the priming paint to obtain high-elasticity polyurethane wear-resistant priming paint coating; preparing the finishing paint; coating the cured priming paint with the finishing paint to obtain high-elasticity polyurethane wear-resistant coating. The high-elasticity polyurethane wear-resistant paint has an anti-corrosion function and an anti-abrasion effect. The preparation method is scientific and practicable in process, and the coating prepared by the method is excellent in anti-abrasion effect.

Description

Technical field

[0001] The invention relates to the technical field of non-metallic anti-abrasion of metal structures of hydraulic machinery and hydraulic buildings, and particularly relates to a high-elastic polyurethane wear-resistant paint and a preparation method of its coating. Background technique

[0002] There are many sandy rivers in our country. The surface of the metal structure of hydraulic machinery and hydraulic structures not only suffers different degrees of damage, sand abrasion and cavitation damage, but also suffers from corrosion damage in some cases. At the same time, abrasion and corrosion can cause damage to hydraulic machinery and hydraulic structures more quickly, resulting in a decrease in the operating efficiency and output of the power station, and forcing frequent overhaul of the unit, which has become a key issue to be solved in hydropower production.

[0003] At present, the polyurethane paint on the market generally only has anti-corrosion effect, wh...

Examples

Embodiment 1

[0023] A method for preparing a highly elastic polyurethane wear-resistant paint coating, the specific steps include:

[0024] Step 1: Weigh 1000g of polyurethane prepolymer, 500g of acetone, and 300g of lead tetroxide, disperse the lead tetroxide in 200g of acetone, stir evenly and pour into the polyurethane prepolymer to obtain a prepolymer mixture; Weigh 100g of dimethylthiotoluenediamine and dissolve it in 300g of acetone, stir it with the prepolymer mixture evenly to prepare a highly elastic polyurethane wear-resistant primer;

[0025] Step 2: Apply the primer to the protective part by brushing or spraying, and cure for 12 hours at room temperature to obtain a highly elastic polyurethane wear-resistant primer coating.

[0026] Step 3: Weigh 1000g polyurethane prepolymer, 600g graphite flakes, 500g acetone, disperse 600g graphite flakes in 200g acetone, stir evenly and pour into the polyurethane prepolymer to obtain a polyurethane prepolymer mixture; weigh 100g Dimethylthiotolue...

Embodiment 2

[0029] A method for preparing a highly elastic polyurethane wear-resistant paint coating, the specific steps include:

[0030] Step 1: Weigh 1000g of polyurethane prepolymer, 500g of acetone, and 300g of lead tetroxide, disperse the lead tetroxide in 200g of acetone, stir evenly and pour into the polyurethane prepolymer to obtain a prepolymer mixture; Weigh 120g of dimethylthiotoluenediamine and dissolve it in 300g of acetone, stir it with the prepolymer mixture evenly to prepare a highly elastic polyurethane wear-resistant primer;

[0031] Step 2: Apply the primer to the protective part by brushing or spraying, and cure for 12 hours at room temperature to obtain a highly elastic polyurethane wear-resistant primer coating.

[0032] Step 3: Weigh 1000g polyurethane prepolymer, 600g graphite flakes, 500g acetone, disperse 600g graphite flakes in 200g acetone, stir evenly and pour into the polyurethane prepolymer to obtain a polyurethane prepolymer mixture; weigh 120g Dimethylthiotolue...

Embodiment 3

[0035] A method for preparing a highly elastic polyurethane wear-resistant paint coating, the specific steps include:

[0036] Step 1: Weigh 1000g of polyurethane prepolymer, 500g of acetone, and 300g of lead tetroxide, disperse the lead tetroxide in 200g of acetone, stir evenly and pour into the polyurethane prepolymer to obtain a prepolymer mixture; Weigh 100g of dimethylthiotoluenediamine and dissolve it in 300g of acetone, stir it with the prepolymer mixture evenly to prepare a highly elastic polyurethane wear-resistant primer;

[0037] Step 2: Apply the primer to the protective part by brushing or spraying, and cure for 12 hours at room temperature to obtain a highly elastic polyurethane wear-resistant primer coating.

[0038] Step 3: Weigh 1000g polyurethane prepolymer, 800g graphite flakes, 500g acetone, disperse 600g graphite flakes in 200g acetone, stir evenly and pour into the polyurethane prepolymer to obtain a polyurethane prepolymer mixture; weigh 100g Dimethylthiotolue...

Technical field

[0001] The invention relates to the technical field of non-metallic anti-abrasion of metal structures of hydraulic machinery and hydraulic buildings, and particularly relates to a high-elastic polyurethane wear-resistant paint and a preparation method of its coating. Background technique

[0002] There are many sandy rivers in our country. The surface of the metal structure of hydraulic machinery and hydraulic structures not only suffers different degrees of damage, sand abrasion and cavitation damage, but also suffers from corrosion damage in some cases. At the same time, abrasion and corrosion can cause damage to hydraulic machinery and hydraulic structures more quickly, resulting in a decrease in the operating efficiency and output of the power station, and forcing frequent overhaul of the unit, which has become a key issue to be solved in hydropower production.

[0003] At present, the polyurethane paint on the market generally only has anti-corrosion effect, wh...

Examples

Embodiment 1

[0023] A method for preparing a highly elastic polyurethane wear-resistant paint coating, the specific steps include:

[0024] Step 1: Weigh 1000g of polyurethane prepolymer, 500g of acetone, and 300g of lead tetroxide, disperse the lead tetroxide in 200g of acetone, stir evenly and pour into the polyurethane prepolymer to obtain a prepolymer mixture; Weigh 100g of dimethylthiotoluenediamine and dissolve it in 300g of acetone, stir it with the prepolymer mixture evenly to prepare a highly elastic polyurethane wear-resistant primer;

[0025] Step 2: Apply the primer to the protective part by brushing or spraying, and cure for 12 hours at room temperature to obtain a highly elastic polyurethane wear-resistant primer coating.

[0026] Step 3: Weigh 1000g polyurethane prepolymer, 600g graphite flakes, 500g acetone, disperse 600g graphite flakes in 200g acetone, stir evenly and pour into the polyurethane prepolymer to obtain a polyurethane prepolymer mixture; weigh 100g Dimethylthiotolue...

Embodiment 2

[0029] A method for preparing a highly elastic polyurethane wear-resistant paint coating, the specific steps include:

[0030] Step 1: Weigh 1000g of polyurethane prepolymer, 500g of acetone, and 300g of lead tetroxide, disperse the lead tetroxide in 200g of acetone, stir evenly and pour into the polyurethane prepolymer to obtain a prepolymer mixture; Weigh 120g of dimethylthiotoluenediamine and dissolve it in 300g of acetone, stir it with the prepolymer mixture evenly to prepare a highly elastic polyurethane wear-resistant primer;

[0031] Step 2: Apply the primer to the protective part by brushing or spraying, and cure for 12 hours at room temperature to obtain a highly elastic polyurethane wear-resistant primer coating.

[0032] Step 3: Weigh 1000g polyurethane prepolymer, 600g graphite flakes, 500g acetone, disperse 600g graphite flakes in 200g acetone, stir evenly and pour into the polyurethane prepolymer to obtain a polyurethane prepolymer mixture; weigh 120g Dimethylthiotolue...

Embodiment 3

[0035] A method for preparing a highly elastic polyurethane wear-resistant paint coating, the specific steps include:

[0036] Step 1: Weigh 1000g of polyurethane prepolymer, 500g of acetone, and 300g of lead tetroxide, disperse the lead tetroxide in 200g of acetone, stir evenly and pour into the polyurethane prepolymer to obtain a prepolymer mixture; Weigh 100g of dimethylthiotoluenediamine and dissolve it in 300g of acetone, stir it with the prepolymer mixture evenly to prepare a highly elastic polyurethane wear-resistant primer;

[0037] Step 2: Apply the primer to the protective part by brushing or spraying, and cure for 12 hours at room temperature to obtain a highly elastic polyurethane wear-resistant primer coating.

[0038] Step 3: Weigh 1000g polyurethane prepolymer, 800g graphite flakes, 500g acetone, disperse 600g graphite flakes in 200g acetone, stir evenly and pour into the polyurethane prepolymer to obtain a polyurethane prepolymer mixture; weigh 100g Dimethylthiotolue...