Influence of Water-Induced Degradation of Polytetrafluoroethylene (PTFE)-Coated Woven Fabrics Mechanical Properties

Abstract

The impact of water-induced degradation on the mechanical properties of the chosen two PTFE-coated, glass threads woven fabrics is investigated in this paper. The paper begins with a survey of literature concerning the investigation and determination of coated woven fabric properties. The authors carried out the uniaxial tensile tests with an application of flat and curved grips to establish the proper values of the ultimate tensile strength and the longitudinal stiffness of groups of specimens treated with different moisture conditions. Despite the water resistance of the main materials used for fabrics manufacturing, the change of the mechanical properties caused by the influence of water immersion has been noticed. The reduction in the tensile strength resulting under waterlogged is observed in the range from 5% to 16% depending on the type of investigated coated woven fabric and direction of weft or warp.

Influence of cyclic frozen and defrost on mechanical properties of polytetrafluoroethylene (PTFE)-coated woven fabrics

“…For laboratory tests the authors chose two coated woven fabrics having glass threads coated by PTFE. The properties of the PTFE coated woven fabrics are the same as those investigated by Ambroziak and Kłosowski [11]. The S-type and B-type fabrics' main properties, declared by the producers, are very similar, Table 1.…”

“…The literature concerning the subject of coated woven fabrics is very extensive. Every year new investigations are performed on comprehensive studies on the coated woven fabrics [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25]. Performed investigations have shown that the mechanical parameters of the coated woven fabrics are highly influenced by temperature changes [26,27].…”

“…Performed investigations have shown that the mechanical parameters of the coated woven fabrics are highly influenced by temperature changes [26,27]. Additionally, research investigations indicated that coated woven fabrics occur a reduction in the tensile strength resulting under water-logged [11,28,29]. A more extended survey of literature concerning the investigation carried out on coated woven fabrics is performed by Authors in [11].…”

“…Additionally, research investigations indicated that coated woven fabrics occur a reduction in the tensile strength resulting under water-logged [11,28,29]. A more extended survey of literature concerning the investigation carried out on coated woven fabrics is performed by Authors in [11].…”

Preparation and application of superhydrophobic polytetrafluoroethylene materials and micro/nanoindentation

“…When the surface roughness of the material is large, the air forms an air cushion in the groove. When the Wenzel model fails, the surface contact state is converted to the Cassie model [7]. In this model, the residual gas in the solid surface groove forms a new solid-liquid-gas composite interface with the droplet and the solid surface, as described in Formula (3):…”