Resin linings
Structural elements of industrial systems are exposed to various corrosive loads. These are mainly chemical influences, e.g. from acids, alkalis, salt solutions and organic solvents, also various chemicals or water vapour, the corrosive potential of which often increases with rising temperatures or strong temperature fluctuations. Tanks, pipelines, reaction towers, absorbers, etc., are additionally often exposed to mechanical stresses such as pressure and abrasion.
Over the past decades, STEULER-KCH has developed a wide range of resin linings. As a rule, many criteria have to be taken into account when selecting the optimum material. In particular, organic protective linings with a layer thickness of at least 1 mm according to DIN EN 14879, are required for heavy loads from media affecting immediately structural elements.
Requirements:
- durable chemical resistance and tightness
- durable heat resistance
- durable mechanical load-bearing capacity
- adhesion to the base (steel, concrete)
- resistance to ageing
- anti-adhesion and decontamination properties
- ability to cover cracks in the base (concrete)
- no adverse impact on living organisms
- ability to dissipate electrical charges
Depending on the situation, not only various products but also various application methods are used:
High-performance linings for spatula application, containing fillers with high chemical and mechanical resistance, on an epoxy and vinylester resin basis, and on a polyurethane basis for applications on concrete base (e.g. floors) as well as steel base (process tanks)
Spray linings on the basis of polyurethane, vinylester, unsaturated polyester and epoxy resin, as well as ‘flake’-type linings and spray laminates on the basis of vinylester, polyurethane and epoxy resin, also special vinylester resin linings with high temperature resistance and epoxy resin linings approved for contact with potable water for the protection of steel and concrete structures.
Glass and synthetic fibre-reinforced laminates on furan, vinylester, unsaturated polyester and epoxy resin basis, with high durability and very good chemical resistance for the protection of steel and concrete structures.
Lining systems in accordance with the Water Protection Act provisions
The Water Protection Act provisions relating to protective linings, aim at protecting – primarily against corrosion – tanks, protective bowls and even base surfaces in such a way as to exclude the leakage of hazardous substances into the ground and subsequently into groundwater. If the lining is to protect a concrete surface, it must also cover cracks in the surface to be protected. If the lining is likely to be exposed, even briefly, to liquids defined as flammable by relevant regulations, the lining material must also be able to dissipate electrical charges. The linings developed by STEULER-KCH to meet these requirements have been tested by authorised testing institutions and have been certified accordingly, including a certificate from the German Institute for Building Technology (DIBt), which confirmed the required physical and chemical properties of our linings and their suitability for the range of applications discussed here. We are also an authorised contractor for the works falling within the scope provided for by the Groundwater Protection Act.