Zhongkang Taibo-Tianjin Anti-corrosion Coating Co., Ltd., 天津市武清区天津自行车王国产业园区和园道 78 号, Wuqing (2026)

16/03/2026

The choice of chimney anti-corrosion coating entirely depends on its operating temperature, the composition of the exhaust flue gas, and the material of the structure. The core objective is to resist high-temperature oxidation, acid dew point corrosion, chemical media erosion, and thermal stress.

According to operating temperature, inner wall corrosion protection is key:
• High-temperature zone (above 400℃): High-temperature resistant silicone coatings must be selected. Aluminum powder type is suitable for 400-600℃, while ceramic filler type can withstand over 600℃. It protects through the formation of a silicon-oxygen bond layer, achieving long-term heat resistance and oxidation resistance.

• Medium-temperature zone (180℃-400℃): Acid dew point corrosion is most severe in this range. Epoxy-phenolic or vinyl ester glass flake mortar is recommended. Thanks to its dense flake structure, it can effectively block the pe*******on of condensed acids such as sulfuric acid and hydrochloric acid.

• Low-temperature zone (below 180℃): The inner wall faces the continuous scouring of condensed strong acid liquids. Vinyl ester glass flake mortar or hybrid polymer mortar is the best choice, providing excellent acid resistance and adhesion after curing.

Outer wall and supporting system:
Outer wall protection must consider both corrosion resistance and weather resistance. The standard system is epoxy zinc-rich primer + epoxy red iron intermediate coat + acrylic polyurethane/fluorocarbon topcoat. If aviation warnings are required, the topcoat is replaced with aviation marking paint. For concrete chimneys, the inner wall should prioritize a highly flexible mortar system to accommodate micro-cracks in the substrate.

Construction and selection fundamentals:
Regardless of the system selected, thorough surface pretreatment is the key to success. Steel surfaces need to be sandblasted to Sa2.5 grade, and concrete surfaces must be solid, dry (moisture content

16/03/2026

The core of the construction of the cooling tower navigation marker paint lies in the base surface treatment, standardized matching, precise positioning and strict maintenance to ensure its long-term aviation warning and anti-corrosion function. The specific points are as follows:

1. Foundation surface treatment is the foundation
The concrete surface must be thoroughly cleaned to remove all floating ash, moss, oil stains and loose old coatings. Repair and level cracks and peeling parts. The base layer needs to be sandblasted or mechanically polished to form a uniform rough surface, and the moisture content after treatment should be less than 8% before subsequent coating can be carried out.

2. Coating supporting is the guarantee
The composite system of "closed primer + intermediate paint + navigation beacon topcoat" must be adopted. Epoxy primers are recommended with highly weather-resistant acrylic polyurethane or fluorocarbon topcoats. The primer and intermediate coat provide the foundation for adhesion and additional protection for the topcoat, both of which are indispensable.

3. Color ring positioning is the key
1. Accurate pay-off: Use a total station or laser level to measure the elastic line to ensure that the color wheel (usually red and white) is level.
2. Width compliance: The width of a single color ring is generally 1/7 to 1/10 of the total height of the cooling tower, or set at 3-5 meters, subject to local civil aviation regulations.
3. Clear boundaries: Paste masking paper for protection to ensure that the color ring dividing line is straight and the error is controlled within 3 mm.

4. Construction and curing control
1. Preferred spraying: The topcoat must be sprayed without air to ensure uniform film thickness and flat appearance. The nozzle diameter should be 0.4-0.5 mm.
2. Film thickness up to standard: The top coat should be applied in two steps, and the total dry film thickness should not be less than 120 microns, and it is recommended to reach more than 200 microns.
3. Environmental management: The construction environment temperature should be 5-35°C, the base surface temperature should be 3°C higher than the dew point, and the relative humidity should be less than 85%. It is strictly forbidden to work in rainy, snowy, and windy weather (wind force > level 5).

5. Safety and acceptance
1. High-altitude safety: Operators must use a double-rope fall prevention system, and stop painting at height immediately when the wind speed exceeds 8 m/s (level 5 wind).
2. Final acceptance: After the coating is dry, the total thickness of the dry film must meet the design requirements, and the adhesion should be tested by the grid method to reach level 1 (optimal). The color of the color ring should be uniform, with clear boundaries, and no defects such as sagging and missing coating.

Strict adherence to the above points ensures that the navigation marker paint system has an effective service life of more than 5 years.

16/03/2026

The specific operating procedure for using Cool Insulating Paint on oil tankers is as follows, covering key steps such as surface preparation, matching coating system, construction process, and curing and maintenance.

1. Surface Preparation
The metal surface of the oil tanker must be thoroughly rust- and oil-free. Sandblasting is preferred to reach the Sa2.5 standard, with a surface roughness controlled at 30–75 μm; if using electric tools for rust removal, it should reach St3 standard. Existing paint that is intact can be retained, but any loose or peeling old paint must be removed with a grinder or wire brush. Coating should be applied within 4 hours after surface preparation to avoid flash rust.

2. Matching Coating System
Typically, a three-layer “primer‑intermediate paint‑topcoat” system is used:
• Primer: Cool Glue Insulating Primer, dry film thickness about 70 μm, replacing traditional anti-rust paint, enhancing adhesion and rust protection.

• Intermediate Paint: Cool Glue Insulating Intermediate Paint, dry film thickness about 35 μm, serves as a bridge between primer and topcoat, improving overall corrosion resistance.

• Topcoat: Cool Glue Insulating Topcoat, dry film thickness about 90 μm, provides main heat reflection and insulation functions, solar reflectance ≥ 0.83.

3. Construction Method
Airless spraying is recommended, nozzle diameter 0.4–0.5 mm, spraying pressure 20–25 MPa, dilution ratio 0–5%. Corners, weld seams, and other areas can be pre-applied with brushing or rolling. The interval between layers should be ≥24 hours, ensuring the surface is dry before applying the next coat. The total dry film thickness is recommended to be ≥160 μm, with a theoretical consumption of about 0.5–0.6 kg/m².

4. Drying and Curing
Surface dry time is about 2–3 hours, and full dry time is 24 hours. After applying the topcoat, it must cure at room temperature (25℃) for more than 7 days before use; if the ambient temperature is below 10℃, the curing period should be extended to more than 10 days.

5. Environmental and Safety Controls
The construction environment temperature should be 5–40℃, relative humidity

12/03/2026

In underground projects, the selection of paint coatings is a key technical decision, with the core objective of creating a reliable barrier capable of long-term resistance to moisture, electrolytes, chemical media, and microbial corrosion in the soil. The selection is not about pursuing the best performance in a single aspect but is based on a systematic balance of the corrosive environment, design life, construction conditions, and life-cycle cost.

Firstly, epoxy coal tar coatings are one of the longest-used systems. They combine the excellent water resistance of coal tar with the strong adhesion of epoxy resin, performing well in water-immersed, buried, and other low-oxygen environments, and the cost is relatively low. However, the coating film has weak resistance to temperature differences and weathering, and its environmental performance is also a notable shortcoming. Currently, it is more commonly used in traditional projects such as municipal pipelines where environmental requirements are not strict.

The current mainstream high-performance choice is the (solvent-free) epoxy coating system. By eliminating solvent evaporation, it forms a denser, pinhole-free thick coating with excellent chemical resistance and insulation, and is more environmentally friendly. Its mechanical strength is high, making it the preferred anti-corrosion coating for most key underground projects, such as chemical pipe galleries and tank foundations, often used as a primer or intermediate coat.

For components that may endure soil stress or slight displacement, polyurethane coatings can be introduced as a topcoat or modifying component. Its high elasticity can effectively buffer external stress and prevent coating cracking, but its water resistance alone is inferior to epoxy, so it is often paired with an epoxy primer to form a “rigid-flexible combined” composite system.

The highest level of protection belongs to fusion-bonded epoxy powder (FBE) and three-layer polyethylene structures (3LPE). These are no longer traditional paints but prefabricated composite structures in the factory. FBE provides basic adhesion and corrosion resistance, while the outer polyolefin layer offers excellent mechanical protection and insulation. This system is the gold standard for long-distance oil and gas pipelines, but it is costly and difficult to repair on site.

It is crucial that all underground coatings must be designed in conjunction with a cathodic protection system. The coating serves as the first line of defense, while cathodic protection acts as a supplement, providing current protection at coating defects; the combination ensures decades of safe operation. Therefore, the selection is essentially about choosing the most suitable "coat" for the entire corrosion control system and requires rigorous techno-economic evaluation.

12/03/2026

Epoxy floor paint, polyurethane floor paint, acrylic floor paint, and chlorinated rubber floor paint are the four main types of industrial floor coatings, with significant differences in performance and application scenarios. Epoxy floor paint is based on epoxy resin, and its core advantages lie in unparalleled adhesion, excellent wear and compressive resistance, and outstanding resistance to acids, alkalis, and chemical corrosion. The resulting paint film is dense and hard, providing excellent dustproof performance, and it is widely used in indoor environments with high requirements for cleanliness and durability, such as industrial plants, underground garages, electronics workshops, and pharmaceutical factories. However, its weather resistance is poor, and long-term exposure to ultraviolet light (such as outdoors) can easily cause chalking and discoloration.

Polyurethane floor paint uses polyurethane resin as the film-forming material. While retaining good mechanical properties, it significantly enhances flexibility and weather resistance. Its paint film has a certain elasticity, better absorbing impacts, is not easily yellowed, and has excellent resistance to oils and solvents. Therefore, it is particularly suitable for places with temperature variations or that need to withstand thermal expansion and contraction, or areas requiring oil resistance, decorative properties, or outdoor use, such as outdoor parking lots, food processing workshops, and outdoor floors requiring corrosion resistance. The polyurethane system is an important choice to make up for the shortcomings of epoxy systems outdoors.

Acrylic floor paint is mainly based on acrylic resin. Its main characteristics are fast drying, convenient application, and relatively low cost. It has good UV resistance and color retention, but its overall mechanical strength, wear resistance, and chemical corrosion resistance are usually weaker than epoxy and polyurethane products. It is mainly used in outdoor sports venues, temporary floor coatings, or as a low-cost floor beautification solution where performance requirements are not strict.

Chlorinated rubber floor paint was once an important heavy-duty anti-corrosion coating, known for its fast drying, water resistance, and good acid and alkali resistance. However, due to the involvement of ozone-depleting carbon tetrachloride during production and a high content of volatile organic compounds in the finished product, it has gradually been phased out worldwide due to strict environmental regulations. Its original application areas, such as chemical anti-corrosion flooring, have now been replaced by highly chlorinated polyethylene paint, vinyl ester heavy-duty anti-corrosion flooring, or high-performance epoxy/polyurethane systems.

In summary, the choice of floor paint should primarily consider the usage environment: the epoxy system is the preferred choice for indoor heavy-duty, high-cleanliness environments; the polyurethane system is the optimal choice for outdoor areas, temperature change resistance, and oil-resistance requirements; the acrylic system is suitable for low-cost, fast-drying general outdoor protection; and the chlorinated rubber system is no longer recommended due to its environmental drawbacks.

12/03/2026

Chlorosulfonated polyethylene paint and polyurethane paint are two industrial anti-corrosion coatings with large differences in performance and application scenarios. To put it simply, chlorinated polyethylene paint focuses on "chemical resistance", while polyurethane paint focuses on "weather resistance and decoration".
(1) Chemical resistance
Chlorine sulfonated polyethylene paint: Complete victory. Its molecular structure contains chlorine atoms and sulfonyl chloride groups, which can form a dense inert paint film and have strong resistance to chemical media such as acids, alkalis, salts, and oxidants. Therefore, it is often used in strong corrosive environments such as chemical equipment, sewage treatment tanks, and the inner walls of acid-alkali storage tanks.
Polyurethane paint: Medium chemical resistance. Although it has a certain tolerance to oils and solvents, in strong acid and alkali environments, the paint film is prone to hydrolysis or degradation, and is not as stable as CSM.
(2) Weather resistance and decoration
Polyurethane paint: Perfect. Polyurethane paints (especially aliphatic polyurethane topcoats) have excellent UV resistance, and the paint film is not easy to chalk and discolor, and can maintain gloss and bright color for a long time. Therefore, it is often used as a topcoat for outdoor steel structures, bridges, and construction machinery, which is both anti-corrosion and aesthetically pleasing.
Chlorosulfonated polyethylene paint: poor weather resistance. Long-term exposure to outdoor ultraviolet rays can easily chalk and lose luster, and poor color retention, so it is usually not used as a decorative topcoat.
(3) Mechanical properties
Polyurethane paint: The paint film is hard, wear-resistant, has strong adhesion, and has good impact resistance, making it suitable for surfaces that are frequently rubbed or stressed (such as flooring, machinery and equipment).
Chlorosulfonated polyethylene paint: The paint film is relatively soft and flexible, but its hardness and wear resistance are not as good as polyurethane paint.
(4) Construction and environmental protection
Construction temperature: Chlorosulfonated polyethylene paint can be applied in a low temperature environment of -20°C, and the drying speed is fast; Polyurethane paint has high requirements for construction temperature, and it is difficult to cure at low temperature.
Environmental protection: Chlorine sulfonated polyethylene paint is a chlorine-containing paint, which may produce harmful gases when burned or at high temperatures; Polyurethane paints (especially water-based or solvent-free) are more environmentally friendly.
3. How to choose?
Chlorine sulfonated polyethylene paint: When your coating object is in a harsh chemical environment such as strong acid, strong alkali, salt spray, sewage immersion, etc. (such as chemical plant equipment, sewage treatment tanks, underground pipelines), chlorine sulfonated polyethylene paint should be preferred.
Choose polyurethane paint: When your coating object is in an outdoor atmospheric environment and has high requirements for appearance, gloss, and color maintenance (such as steel structure workshops, bridges, stadiums, automobiles), polyurethane paint should be preferred.
Professional advice: In the field of industrial heavy anti-corrosion, the "composite coating" system is sometimes used, that is, with epoxy zinc-rich primer as the primer, with epoxy cloud iron intermediate paint in the middle, and finally with polyurethane topcoat for protection and decoration. Chlorinated polyethylene paints are mostly used in independent full-coated anti-corrosion systems.

11/03/2026

The price of high-temperature resistant silicone paint is significantly higher than that of ordinary industrial paint, mainly due to the high cost of its core raw materials, complex synthesis process, and performance premium. The specific reasons are:
1. High proportion of core raw material costs
In the cost structure of high-temperature resistant silicone paint, silicone resin typically accounts for more than 50%, making it the key factor determining the price. The synthesis of silicone resin relies on high-purity silicon monomers, whose upstream raw materials (such as metallic silicon, methanol) and catalysts (such as platinum) have volatile prices, and in recent years, due to environmental regulations and rising energy costs, prices have remained high. In addition, to withstand high temperatures above 600°C, a large amount of special heat-resistant fillers (such as mica powder, ceramic micro powder, aluminum powder, etc.) needs to be added to the formulation, and these materials are much more expensive than ordinary pigments and fillers.
2. Complex synthesis and modification process
Silicone resin itself has drawbacks such as poor adhesion and high curing temperature, making it unsuitable for direct use in industrial coatings. Therefore, chemical modification (such as epoxy modification, acrylic modification) or the introduction of special additives is necessary to improve its performance. These modification processes involve complex polycondensation and grafting reactions, carried out under specific temperature, pressure, and catalyst conditions, with long production cycles, high energy consumption, and strict equipment precision requirements, which significantly increase manufacturing costs.
3. Performance premium and certification costs
High-temperature resistant silicone paint is a special functional coating, whose temperature resistance (up to above 600°C), weather resistance (does not chalk for over 10 years), and chemical inertness far exceed ordinary epoxy or alkyd paints. Such excellent performance makes it indispensable in key fields such as aerospace, petrochemical, and high-temperature equipment, resulting in a high technical premium. At the same time, to meet specific industry standards (such as UL certification, CQC certification), the product must undergo rigorous heat and corrosion resistance testing, which also increases R&D and certification costs.
4. Environmental and safety compliance costs
With stricter environmental regulations, VOC emissions from solvent-based silicone paints are strictly limited. To reduce VOCs, companies need to invest in developing water-based or high-solid content products, or purchase expensive eco-friendly solvents to replace traditional xylene, which also drives up the final product price.

11/03/2026

Epoxy phenolic paint is a special branch of epoxy paint, which achieves "qualitative change" in high temperature resistance and chemical corrosion resistance by introducing phenolic resin. To put it simply, epoxy phenolic paint is a "high-end version" epoxy paint specially designed for "extreme environments".
1. Core differences: high temperature resistance and corrosion resistance
This is the most essential difference between the two. The temperature resistance limit of ordinary epoxy paints is usually around 120°C, while epoxy phenolic paints have greatly improved temperature resistance through the cross-linked structure of phenolic resins, and can withstand high temperatures of 200°C-300°C for a long time.
2. Comparison of application scenarios, epoxy paint: suitable for most conventional industrial environments, such as workshop floors, steel structure workshops, machinery and equipment, etc. It is relatively economical in price, easy to construct, and the most popular choice for industrial anti-corrosion.
Epoxy phenolic paint: Specially used in the inner walls of oil storage tanks, high-temperature pipelines, chemical reactors, etc. In these places, ordinary epoxy paints can be quickly destroyed by high temperatures or strong solvents, while epoxy phenolic paints provide long-lasting protection.
3. Construction and cost, epoxy phenolic paint has higher requirements for construction. It typically requires high-temperature baking, such as 180°C, to fully cure, creating a dense, corrosion-resistant paint film. Ordinary epoxy paints are mostly cured at room temperature, making the construction more flexible. Epoxy phenolic paints are usually more expensive than ordinary epoxy paints due to higher raw materials and process requirements.
In summary, if the equipment or structure you need to protect is in a normal temperature or medium and low temperature environment, and the corrosive medium is not extreme, choose ordinary epoxy paint is more cost-effective.
If your equipment needs to be exposed to high-temperature steam, hot oil, strong acids and alkalis, or organic solvents, epoxy phenolic paint is the only right choice.

11/03/2026

Epoxy-phenolic paint is usually used as a primer or intermediate coat, and the subsequent choice of topcoat mainly depends on the usage environment and anti-corrosion requirements. Since epoxy-phenolic paint itself has poor weather resistance (prone to chalking), it usually needs to be paired with a topcoat with good weather resistance to protect the primer layer.

The following are common complementary topcoat schemes:
1. Standard matching scheme (recommended)
Such as epoxy topcoat, epoxy thick-film paint; for indoor environments, tank interiors, underground pipelines, and equipment interiors. Good adhesion, excellent anti-corrosion performance, and excellent compatibility with epoxy-phenolic primer. Poor weather resistance, not suitable for long-term outdoor exposure.
2. Outdoor weather-resistant matching scheme
Such as aliphatic polyurethane topcoat. For outdoor steel structures, bridges, and building exteriors. Excellent weather resistance, strong gloss and color retention, and good decorative effect. Ensure the epoxy-phenolic primer is fully cured (usually 7 days) before coating, or apply an epoxy intermediate coat as a transition.

Fluorocarbon topcoat: high-corrosion and high-UV environments, such as coastal areas and chemical plant exteriors. Ultra-long weather resistance (15-20 years), good self-cleaning properties.
Acrylic polyurethane topcoat: general outdoor steel structures; cost-effective with good weather resistance.
3. Special function matching scheme
Chlorinated rubber topcoat: underwater or humid environments (such as ship hulls, sluices). Good water resistance, fast drying. Poor environmental friendliness, restricted in some regions.
Polysiloxane topcoat: extremely harsh environments such as offshore platforms and high-temperature conditions. High-temperature resistance, chemical resistance, and excellent weather resistance.
4. High-temperature environment matching scheme
Organic silicone high-temperature topcoat: chimneys, high-temperature pipelines, boilers. High-temperature resistance (200-800℃), protecting the primer from high-temperature damage.

Construction recommendations
Intercoat adhesion: Before applying the topcoat, ensure that the surface of the epoxy-phenolic primer is clean, dry, and free of oil.
Recoating interval: The topcoat should be applied within the "maximum recoating interval" of the primer. If exceeded, the primer surface needs to be roughened.
Compatibility testing: Before large-scale application, it is recommended to conduct a small-scale test coating to confirm good intercoat adhesion. ...

10/03/2026

There are significant differences in rust prevention mechanism, applicable substrates and cost control between zinc epoxy phosphate, zinc epoxy yellow and epoxy iron red primers. Epoxy red primer is the most cost-effective in conventional atmospheric environments with its extremely low material cost and universality to ordinary steel; Zinc epoxy phosphate primer achieves the best balance between environmental compliance and comprehensive protection performance, and is the mainstream choice for industrial anti-corrosion.
In-depth analysis of cost performance
Epoxy Red Primer (Economical)
The price is the lowest, and the requirements for substrate treatment are extremely low, and it can be applied by hand sanding. Its iron red color has strong covering power, which can effectively save the amount of topcoat. The rust resistance is the weakest of the three, relying only on physical shielding, unable to cope with humid or salt spray environments, and is usually used for indoor dry environments or short-term protection. When budgets are extremely tight and environmental corrosiveness is extremely low, iron red primers are the first choice.
Zinc epoxy phosphate primer (performance balanced)
Zinc phosphate is used as an anti-rust pigment, free of heavy metals, and in line with modern environmental regulations. Its anti-rust performance is better than that of iron red, and it has good adhesion to a variety of substrates (including galvanized sheets) and has a long construction window. The price is higher than that of iron red, and the rust resistance is slightly inferior to that of primers containing zinc powder. Zinc phosphate primers are the most cost-effective when pursuing environmental compliance, moderately corrosive environments (such as industrial atmospheres), or when the substrate is galvanized sheet.
The adhesion of epoxy zinc yellow primer (special scene type) to smooth metals (such as stainless steel and aluminum alloy) is the strongest among the three, which can solve the world problem that smooth surface coating is easy to peel off. It contains heavy metals such as hexavalent chromium, poor environmental protection, and the paint film is brittle, thick coating is easy to crack, and the price is relatively high.
It is only recommended for special scenarios where stainless steel, aluminum alloy or galvanized sheet must be painted, and conventional steel structures are not recommended.
1.
Selection suggestions
Ordinary workshop and warehouse steel structure (C3 environment): Epoxy iron red primer is preferred, with the lowest cost.
Chemical plants, coastal equipment, galvanized sheets (C4 environment): Zinc epoxy phosphate primer is preferred, taking into account both performance and environmental protection.
Stainless steel railings, aluminum alloy equipment: Epoxy zinc yellow primer (or environmentally friendly alternative) must be used, otherwise the adhesion cannot be guaranteed.

Zhongkang Taibo-Tianjin Anti-corrosion Coating Co., Ltd.

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