An innovative coating that can be directly applied to rusty steel without sanding is revolutionising corrosion protection in heavy industry.
Corrosion, this invisible enemy that devours trillions of dollars globally each year, is facing an unprecedented challenge.
Traditional solvent-based anti-corrosion coatings have been widely criticised for their high volatile organic compound (VOC) content, while new water-based anti-corrosion technology has broken the deadlock between protective performance and environmental protection. These innovative products not only reduce harmful gas emissions but can also be directly applied to rusted surfaces, significantly lowering construction difficulty and costs, making them the new darlings of the industrial protection field. 5
01 A turning point in anti-corrosion technology
Steel corrosion causes enormous economic losses worldwide each year, and traditional protective methods face severe challenges. Solvent-based coatings contain large amounts of volatile organic compounds, which produce toxic gases and fire hazards during application, failing to meet increasingly stringent environmental regulations.
Traditional rust prevention treatments require substantial manpower and resources for surface preparation. For rusted steel structures, complex pre-treatment processes such as cleaning, grinding, water washing, acid washing, or sandblasting must be performed before re-coating. These processes are not only time-consuming and labour-intensive but also generate secondary pollution and hazardous waste.
Solvent-based rust-preventive coatings are being phased out in European and American markets, replaced by more environmentally friendly and safer water-based technologies. This transition is not only a technological upgrade but also represents a deepening of sustainable development concepts in the industrial protection field. 4
02 Innovative Breakthroughs in Water-Based Anti-Corrosion Coatings
PPG's Aquacron 834 water-based anti-corrosion shop primer represents the latest breakthrough in the industry. This product has excellent flow properties, forming a smooth coating on metal surfaces such as steel structures, vehicle frames, scrap bins, and industrial machinery, without requiring complex surface preparation.
03 Diversified Applications of Water-Based Anti-Rust Paint
Innovative solutions have emerged for water conservancy engineering protection. The powder coating system developed by Baden-Württemberg Cooperative Education University in Germany is specifically designed for water conservancy steel structures such as locks, gates, canal bridges, lock hoists, and hydroelectric power stations.
The system effectively prevents corrosion of steel structures in atmospheric, water, and soil environments while inhibiting biofilm formation and the growth of algae and shellfish. By extending maintenance intervals and enhancing component lifespan, this technology significantly reduces the lifecycle costs of water conservancy steel structures.
04 Future Industry Trends
Innovation in water-based anti-corrosion technology is accelerating. The Tranel 130 rust-converting anti-corrosion water-based resin developed by Canadian company Gawie represents the latest direction. This technology employs a high-molecular polymerisation process, introducing cross-linked chelating groups into chelating molecules to convert rust into high-molecular iron chelates, forming a robust, dense, inert black protective layer on metal surfaces.
This technological breakthrough achieves integrated rust removal and protection in steel coating, eliminating the need for traditional cumbersome pretreatment processes, while meeting safety, cleanliness, health, and environmental protection requirements.
As global pursuit of sustainable development intensifies, water-based anti-corrosion technology will evolve toward higher performance and greater environmental friendliness. Future coatings will not only provide longer-lasting protection but also feature advanced functions such as self-healing and intelligent response, while further reducing the environmental footprint during production and use.
