I. Industry Foundation: Definition and Development Context

Paint is a material that can adhere to the surface of a substrate to form a solid film, providing protection, decoration and special functions. Its development has gone through five major stages: from natural oil-based coatings around 30,000 BC, to traditional oil-based coatings in the 19th century, and then to synthetic resin coatings in the mid-20th century. Now, it has entered a new era dominated by environmentally friendly and functional coatings. As the world's largest producer and consumer, China's coatings market accounts for over 30%, and the global market size is expected to exceed 180 billion US dollars in 2024.

Ii. Core Classification: Classified by use and characteristics

Architectural coatings (the category with the largest output)

Interior wall paint: Water-based latex paint is the main type. In recent years, the demand for anti-formaldehyde and antibacterial functional products has soared

Exterior wall paint: mainly acrylic/silicone-acrylic system, elastic coating can prevent wall cracking

Floor paint: epoxy/polyurethane system, emphasizing wear resistance and chemical resistance

Industrial coatings (high technical content

Metal coatings: Emphasizing adhesion and anti-corrosion properties, they are used for equipment, steel structures, etc

Wood coatings: Transition from nitrocellulose lacquer to water-based UV paint

Automotive coatings: electrophoretic primer, intermediate coat, and topcoat systems, with requirements for weather resistance and stone impact resistance

Special functional coatings (High added value)

Fireproof coating: When exposed to fire, it expands to form an insulating layer and is used for steel structures and cables

Antibacterial coatings: Applied in hospitals and food factories, they take effect through antibacterial agents or photocatalysis

Heat insulation coating: Add hollow microspheres to reduce energy consumption of buildings and equipment

Iii. Core of the Formula: The Synergistic Effect of the Four Components

Component

Function and proportion

Examples of key types

Film-forming substance

Determine the basic performance (15-60%)

Acrylic resin (weather-resistant), epoxy resin (anti-corrosion

Pigments and fillers

Coloring and Function Adjustment (5-40%)

Titanium dioxide (covering power), zinc phosphate (rust prevention)

Solvents and diluents

Construction adjustment (10-70%)

Water (water-based system), xylene (solvent-based)

Additive

Performance optimization (1-5%

Dispersant, defoamer, fungicide

Note: Water-based latex paint has a water content of 40-50%, while powder coatings are completely solvent-free

Iv. Production Process: Technical Differences among different systems

Emulsion coating: Raw material pretreatment → high-speed dispersion → grinding by sand mill → blending → filtration and packaging. pH value and viscosity need to be monitored

Solvent-based coatings: Mixing → pre-dispersion → grinding → blending → filtration, equipped with explosion-proof equipment to control VOC emissions

Powder coatings: premixing → extrusion and melting → cooling → crushing → screening, with the core control being the particle size distribution

Key points of quality control: raw material inspection (such as resin reactivity), process parameters (temperature/pressure), and finished product performance (adhesion/weather resistance)

V. Compliance and Standards: The bottom-line Constraints for Industry Development

Environmental protection regulations: The domestic GB 18582 standard strictly controls the VOC content, and the EU REACH regulation restricts the use of harmful substances

VOC reduction: The VOC content of water-based coatings is much lower than that of solvent-based ones, making it the main policy promotion direction

Certification system: ISO 9001 quality management certification, CCC compulsory certification. Exports must comply with the standards of the target country (such as ASTM of the United States).

Vi. Market Landscape and Future Trends

Competitive landscape: Globally, Akzonobel and PPG dominate, while domestic brands Nippon Paint and Dulux take the lead in the domestic market

Development direction

Environmental protection: Low-VOC coatings have an average annual growth rate of 8%, and water-based, powder, and UV-curing types have become mainstream

Functionalization: The demand for special coatings such as self-cleaning, conductive, and temperature-sensing ones is expanding

Intelligence: AI optimizes formula design, and intelligent manufacturing enhances production efficiency

Greening: The application of bio-based additives and renewable raw materials is accelerating

Vii. Must-know Misunderstandings and Purchasing Tips

Misconception 1: "The thicker the paint, the better" - in fact, it is related to the solid content. Excessive thickness may affect the leveling property

Misconception 2: "Zero VOC for eco-friendly coatings" - National standards allow for trace amounts, with the key being whether the emission limits are in compliance

Key points for selection: Check the VOC test report, pay attention to the scrub resistance (for interior walls) and weather resistance (for exterior walls) indicators

(Note: Some parts of the document may be generated by AI.)