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Polyurethane-fluorocarbon composite powder coating suitable for humid and hot marine climatic environment and preparation method of polyurethane-fluorocarbon composite powder coating

A marine climate, powder coating technology, used in polyurea/polyurethane coatings, fire-retardant coatings, coatings, etc., can solve problems such as poor adhesion, large technical risks, poor pigment wetting, etc., to achieve long service life, comprehensive Low cost and excellent performance

Inactive Publication Date: 2018-05-01
GUANGZHOU KINTE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, pure fluorocarbon powder coatings are inherently deficient in adhesion and wettability of pigments and fillers. Poor adhesion and poor pigment wettability make pure fluorocarbon system powder coatings have greater technical risks in the application process

Method used

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  • Polyurethane-fluorocarbon composite powder coating suitable for humid and hot marine climatic environment and preparation method of polyurethane-fluorocarbon composite powder coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The composition and weight ratio of a polyurethane-fluorocarbon composite powder coating suitable for hot and humid marine climate provided by this example are: 160 parts of polyurethane resin with a hydroxyl value of 35-42 mgKOH / g, and a hydroxyl value of 30-42 mgKOH / g. 40 parts of 40mgKOH / g FEVE type fluorocarbon resin, 50 parts of self-blocking isocyanate resin, 0.5 parts of dibutyltin dilaurate, 50 parts of titanium dioxide, 30 parts of barium sulfate, 1.0 parts of silica adsorption type acrylate leveling agent, 0.5 part of benzoin, 3 parts of pigment.

[0033] The preparation method comprises the following steps:

[0034] (a) Weigh each component according to the proportion, place it in the mixing tank, fully mix and crush for 5 minutes;

[0035] (b) The crushed material enters the twin-screw extruder for extrusion; the heating temperature of the extruder is controlled at 100°C;

[0036] (c) The extruded material is compressed into tablets, cooled, and pulverized...

Embodiment 2

[0038] The components and weight ratios of a polyurethane-fluorocarbon composite powder coating suitable for hot and humid marine climate provided by this example are: 140 parts of polyurethane resin with a hydroxyl value of 35-42 mgKOH / g, and a hydroxyl value of 30-42 mgKOH / g. 40mgKOH / g 60 parts of FEVE type fluorocarbon resin, 40 parts of self-blocking isocyanate resin, 0.5 part of dibutyltin dilaurate, 50 parts of titanium dioxide, 30 parts of barium sulfate, 1.0 part of polyester resin loaded acrylate leveling agent, 0.5 part of benzoin, 3 parts of pigment.

[0039] The preparation method comprises the following steps:

[0040] (a) Weigh each component according to the proportion, place it in the mixing tank, fully mix and crush for 10 minutes;

[0041] (b) The crushed material is extruded into a twin or single screw extruder; the heating temperature of the extruder is controlled at 100°C;

[0042] (c) The extruded material is compressed into tablets, cooled, and pulveri...

Embodiment 3

[0044] The components and weight ratio of a polyurethane-fluorocarbon composite powder coating suitable for hot and humid marine climate provided by this example are: 120 parts of polyurethane resin with a hydroxyl value of 35-42 mgKOH / g, and a hydroxyl value of 30-42 mgKOH / g. 40mgKOH / g 80 parts of FEVE type fluorocarbon resin, 60 parts of external blocking agent type isocyanate resin, 0.5 parts of dibutyltin dilaurate, 50 parts of titanium dioxide, 30 parts of barium sulfate, 1.0 parts of silica adsorption type acrylate leveling agent, 0.5 part of benzoin, 3 parts of pigment.

[0045] The preparation method comprises the following steps:

[0046] (a) Weigh each component according to the proportion, place it in the mixing tank, fully mix and crush for 5 minutes;

[0047] (b) The crushed material is extruded into a twin or single screw extruder; the heating temperature of the extruder is controlled at 100°C;

[0048] (c) The extruded material is compressed into tablets, cool...

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Abstract

The invention discloses a fluorocarbon-polyurethane composite powder coating suitable for a humid and hot marine climatic environment. The fluorocarbon-polyurethane composite powder coating comprises,in parts by weight, 100-160 parts of polyurethane resin, 40-100 parts of fluorocarbon resin, 20-80 parts of isocyanate resin, 0-5 parts of accelerator, 30-100 parts of filler, 0.5-3 parts of a levelling agent, 0.5-2 parts of defoamer and 0.5-5 parts of pigment. The invention also discloses a preparation method of the polyurethane-fluorocarbon composite powder coating. The powder coating has the characteristics of a simple process formula, super weatherability, acid and alkali resistance, heavy salt resistance, high humidity and heat resistance and other excellent performance, and is suitablefor a protective coating in the humid and hot marine climatic environment, the coating has a long service life, and the comprehensive cost of maintenance is low.

Description

technical field [0001] The invention relates to a powder coating, in particular to a polyurethane-fluorocarbon composite powder coating suitable for a hot and humid marine climate environment, and at the same time, the invention also relates to a preparation method of the powder coating. Background technique [0002] Various smart grid equipment such as transformers, control systems, switch cabinets, and insulators used in hot and humid marine climate areas are subject to the comprehensive effects of various environmental factors such as high temperature, high humidity, high radiation, high salt spray, microorganisms, and even operating conditions. The problem of environmental failure is very prominent. On-site research shows that due to the lack of targeted design and scientific and reasonable evaluation, the currently used smart grid equipment can only reach 1 / 5~1 / 10 of the expected design life in service in the hot and humid marine climate environment, and frequent replac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D127/12C09D5/46C09D7/63
CPCC09D175/04C08L2201/08C09D5/033C09D5/18C09D127/12C08L27/12C08K13/02C08K5/29C08L75/04
Inventor 高庆福胡百九梁泳田
Owner GUANGZHOU KINTE IND
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