Polymer Coating Effects: Study of Material Properties and Architectural Application Characteristics of Aluminum Template

Abstract

In construction process, the formwork must be in contact with concrete to help the concrete solidify and fix the shape. Coating the formwork with a polymer can prolong its service life by reducing the amount of concrete sticking to the mold. Herein, an aluminum template substrate was coated with polyvinylidene difluoride (PVDF) or polyurethane (PU). Aluminum template material analysis was conducted, polymer film thickness was measured, and weather, moisture, pollution, salt spray, abrasion, impact, and acid and alkali resistance tests were conducted, as were tensile, bending, adhesion, hardness, and salt water resistance tests. Cement adhesion resistance was repeatedly tested. The experimental results indicated that the PVDF-coated template was superior. The novel PVDF Aluminum template exhibited high corrosion resistance and can be used in building materials, for example, in ceilings, partition walls, curtain walls, roof panels, and roof trusses. For reference, it can also be applied to ship structures and seaside and wind power generation projects.

Optimization of Aluminum Alloy Formwork Geometry Parameters Based on a PSO-BP Neural Network

“…E. Gallego et al used ANSYS finite element software to simulate the force deformation of freshly mixed concrete against complex shaped formwork [20]. Hung tested AAFs coated with polyvinylidene fluoride (PVDF) and polyurethane (PU) and concluded, following comparison and analysis, that PVDF-coated formworks have higher corrosion resistance, which can reduce the viscosity of concrete and extend the service life of the formwork [21]. Yang et al proposed a calculation method for analyzing and calculating the lateral pressure on the joints of AAFs under self-compacting concrete using the envelope curve method and optimized the design of an aluminum alloy vertical joint formwork using ANSYS analysis [22].…”