1. Development history of epoxy coating

Origin

Epoxy resins were first used in the field of coatings in the 1930s, but due to technical limitations, the performance of epoxy coatings at that time was poor.

Develop

With the continuous progress of technology, epoxy coatings have been continuously developed and improved in terms of performance and application. At present, epoxy coatings have become one of the important varieties in the field of coatings.

Innovate

In recent years, epoxy coatings have been continuously innovated in anti-corrosion, industrial floor and other fields, such as the development of water-based epoxy coatings, solvent-free epoxy coatings and other environmentally friendly products.

2. Market demand and growth trend

Market demand

With the continuous development of industry, construction, transportation and other fields, the demand for high-performance and environmentally friendly coatings continues to grow, and the market prospect of epoxy coatings is broad.

Growth trend

Epoxy coatings will continue to develop in the direction of high performance, environmental protection and multi-function, such as the development of epoxy coatings with anti-corrosion, fireproof, wear-resistant, conductive and other functions to meet the needs of different fields. At the same time, with the continuous progress of technology and the reduction of costs, the application field of epoxy coatings will also be further expanded.

Policies and regulations

Governments of various countries have increasingly high requirements for environmental protection, safety and other aspects, and promote the development of the coating industry in the direction of environmental protection and low VOC, which will provide greater development opportunities for environmentally friendly coatings such as epoxy coatings.

3. Application in Anti-corrosion field

1. Anti-corrosion principle and advantages

Insulating corrosive medium

By forming a dense oxide film, the epoxy coating can isolate the contact between metals such as steel and corrosive media (such as air, water, acid, etc.), so as to achieve the purpose of anti-corrosion.

Strong resistance to chemical corrosion

Epoxy coatings have excellent chemical corrosion resistance and can resist the erosion of various acids, alkalis, salts and other chemical substances.

Strong adhesion

Epoxy coating has good adhesion to steel, aluminum, concrete and other substrates, and is not easy to fall off or crack.

2. Steel structure anti-corrosion case

Epoxy coatings are widely used in anti-corrosion protection of steel structures, such as Bridges, storage tanks, buildings, etc. Its anti-corrosive effect is durable and can significantly increase the service life of steel structures.

The steel surface is treated by sandblasting or pickling to improve the adhesion between the coating and the substrate.

Choose the appropriate epoxy coating, according to the environment and use requirements for multi-layer coating, in order to achieve the best anti-corrosion effect.

3. Pipeline anti-corrosion solutions

Internal pipeline protection

Epoxy coatings can be used to prevent internal corrosion of pipelines to prevent corrosion of pipelines by transportation media.

Smooth coating can reduce the resistance of medium transportation and improve the efficiency of pipeline transportation.

Pipeline external corrosion protection

Epoxy coatings can be used for external corrosion protection of pipelines to resist the erosion of environmental factors.

The coating has good weather resistance and can maintain beautiful appearance and anti-corrosion effect for a long time.

4. Marine engineering anti-corrosion application

Anti-corrosion of offshore platforms and facilities

Epoxy coatings can be used for anti-corrosion protection of offshore platforms and facilities, such as drilling RIGS and oil production platforms.

The coating has excellent resistance to salt spray and seawater corrosion, which can effectively extend the service life of the facility.

Ship anti-corrosion

Epoxy coatings can be used for anti-corrosion protection of ship hull, deck, cabin and other parts.

The coating has excellent resistance to water, oil and chemicals, and can effectively prevent corrosion and fouling of the hull.

4. Progress and advantages of epoxy coating technology

1. New epoxy resin research and development results

High performance epoxy resin

Through molecular structure design and optimization, a new epoxy resin with excellent corrosion resistance, wear resistance and adhesion was synthesized, which improved the basic properties of coatings.

Functional epoxy resin

According to the needs of different application fields, we have developed functional epoxy resins such as conduction, heat conduction and fire prevention, and expanded the application range of epoxy coatings.

Green epoxy resin

Environmentally friendly raw materials and synthetic processes are used to prepare low-VOCs, non-toxic or low-toxic epoxy resins to meet the increasingly stringent environmental regulations.

2. Improvement measures of coating curing technology

High efficiency curing research and development

The curing speed and crosslinking density of epoxy coating were improved by selecting and optimizing the types and dosage of curing agent, and the overall performance of coating was improved.

Curing process optimization

The variation of coating properties under different curing conditions was studied, and the best curing process parameters were worked out to ensure stable and reliable coating quality.

Energy-saving curing technology

Explore the use of microwave, infrared and other new heating methods to achieve rapid and uniform curing of epoxy coatings, reduce energy consumption and production costs.

3. Cost control and economic benefit analysis

Raw material price control

Pay close attention to market dynamics and raw material price trends, rationally arrange procurement plans and inventory strategies, and reduce the production cost of epoxy coatings.

Productivity improvement

By optimizing the production process and improving the automation level of equipment, the production efficiency of epoxy coating is improved and the manufacturing cost per unit product is reduced.

Product quality and added value

Focus on improving product quality and added value of epoxy coatings, meet high-end market demand, and increase product prices and profit margins.

Marketing and brand building

Increase marketing efforts, enhance brand awareness and reputation, and expand the market share and profitability of epoxy coatings.

5. Construction methods and precautions

1. Preparation and surface treatment requirements

Preparatory work

Clean the surface of oil, rust, old paint film, etc., to ensure that the surface is dry, clean, and not loose.

Surface treatment

The surface is treated by sandblasting, pickling or mechanical grinding to achieve a certain roughness and cleanliness.

Environmental requirement

The construction environment temperature should generally be above 5 ° C, the relative humidity should not exceed 85%, and the ventilation is good.

2. Paint construction skills and experience sharing

Paint mixing

Epoxy resin and curing agent should be mixed evenly in a certain proportion to avoid hardening, caking and other problems.

Construction method

Brush coating, roll coating, spraying and other methods can be used for construction, and each coating thickness should be uniform.

Matters needing attention

During construction, attention should be paid to the coating interval and recoating interval to avoid problems such as biting the bottom and foaming.

3. Acceptance standards and quality assurance measures

Acceptance criteria

The coating surface should be smooth, no bubbles, no flow, no cracks and other defects, and the thickness should meet the design requirements.

Quality assurance measures

Paint should be stored in a dry, cool, ventilated place, avoid direct sunlight and high temperature. The coating should be maintained and maintained after construction to ensure its long-term use effect.

4. Repair and maintenance methods

Maintenance method

When the coating is damaged, it should be repaired in time. The damaged area should be cleaned before repair, and then repainted according to the same coating system.

Maintenance method

The coating surface should be cleaned regularly and kept dry and clean. Avoid long-term exposure to chemicals, oil, etc., so as not to affect the coating performance. For the parts that are frequently rubbed, you can apply wear-resistant paint for protection.

With the advancement of Industry 4.0 and intelligent manufacturing, epoxy coating manufacturers will gradually realize production automation, information and intelligence, and improve production efficiency and product quality.