Off-Axial Tensile Properties of Precontraint PVDF Coated Polyester Fabrics under Different Tensile Rates

الملخص EN

Two types of Precontraint PVDF coated polyester are taken as the research objects.

A series of uniaxial tensile tests were carried out to study the tensile performances of the specimens in eleven in-plane directions including 0°, 5°, 15°, 25°, 35°, 45°, 55°, 65°, 75°, 85°, and 90°, and six tensile rates (10 mm/min, 25 mm/min, 50 mm/min, 100 mm/min, 200 mm/min, and 500 mm/min) were also considered.

The corresponding failure modes and fracture mechanisms were discussed, and the relationships between tensile strength and strain at break and tensile rate and off-axial angles were obtained.

Results show that the Precontraint PVDF coated woven fabrics are typically anisotropic.

With off-axial angle increasing, the tensile strength decreases while the strain at break increases.

Three failure modes can be observed, including failure of yarns pulled out, yarns fracture, and mixture failure.

With tensile rate increasing, the tensile strength increases slightly while the strain at break decreases.

The tensile strength and strain at break show good linear relationship with tensile rate’s logarithm.