Products Catalog

Specification

AGRU SEMI FINISHED ( SHEET & SHEET FABRIC BACKED-ROLLED) PVDF and ECTFE LINING

To protect pipes or tanks and provide the longest possible service life between changeouts, it is important to select the lining material that will endure exposure to aggressive chemicals for years to come.
PVDF and ECTFE are thermoplastic fluorocarbons, which, as a result of their outstanding price/ performance ratio, are becoming increasingly important in system and apparatus construction. Their excellent welding capability and thermoplastic formability make possible simple and cost-saving processing, both on-site and in the workshop.
PVDF and ECTFE fabric backed rolled ( special grade with lower modulus of elasticity than the standard polymer) is an outstanding alternative to the conventional fuoropolymers. In the processing sector, significant rationalization effect can be achieved due to increased flexibility, especially for systems glued on steel, but also for tight space conditions or small radii for the FRP reinforcement.

Application examples :
• Lining of reactors and tanks
• Containers for chemicals
• Cellulose and paper industries
• Chlorine electrolysis
• Lining of UPW ( ultra pure water)
storage tanks

Fluoroplastics have been used as lining material. The lifetime limits of lining material determined by diffusion and permeation rate ( permeability) : the rate at which various liquids and gases penetrate through the lining wall and attack the structure underneath. This in turn depends on factors such as the type of fluoroplastic, the lining thickness, the concentration of chemical gas ( eg. Chlorine dioxide) , and the temperature of application.

ECTFE is distinguished from other materials by its barrier properties. The permeation of oxygen, carbon dioxide, chloric gas or hydrochloric acid is 10 to 100- times better compared to e.g. PTFE or FEP.