Abstract
Abstract Waterproof breathable laminated fabrics have the special property that permits water vapour to pass through but protects by preventing the entrance of liquid water. Different characteristic properties of the layered constructions of these fabrics have good influence on their hydrostatic resistance and mechanical performance. This research study presents an experiment to enhance the hydrostatic resistance and tensile strength of four different types of hydrophobic membrane laminated waterproof fabrics by considering their breathability as well. For this purpose, water repellent coating based on C6-fluorocarbon resin along with polysiloxane hydrophobic softening agent was applied on these four different types of laminated fabrics using pad-dry-cure method. The coated fabrics were characterised by performing different experiments to evaluate the effect of coating on their hydrostatic resistance and mechanical property as well as on water vapour permeability and air permeability. From the test results and analysis of variance (ANOVA), it was found that hydrostatic resistance and tensile strength of the laminated fabrics were enhanced after coating along with proper water repellent property, whereas there were no significant changes in their water vapour permeability and air permeability.
Highlights
The term waterproof can be described as the impermeability to water
Waterproof fabric has fewer open pores; as a result, this fabric is less permeable to the passage of air and water vapour, but it is resistant to the penetration of water even under higher hydrostatic pressure [14]
Waterproof breathable fabrics protect the human body from external water, but they allow moisture vapour to be transmitted from inside to outside
Summary
The term waterproof can be described as the impermeability to water. Waterproof fabric has fewer open pores; as a result, this fabric is less permeable to the passage of air and water vapour, but it is resistant to the penetration of water even under higher hydrostatic pressure [14]. The term fabric breathability can be described as the ability of clothing to permit the transmission of water vapour from inside to outside atmosphere by diffusion and, facilitate evaporative cooling. It is determined by water vapour permeability [6]. Waterproof breathable fabrics protect the human body from external water, but they allow moisture vapour to be transmitted from inside to outside These types of fabrics can be made by depositing hydrophobic materials on the fibre’s surface They have open pores and are permeable to air and water vapour. They still increase the water resistance property but permit the passage of liquid water under higher hydrostatic pressure [14]
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