Water Permeability of Composite Material with Fibrous Filler

The effect of the degree of impregnation of nonwoven needlepunch cloth made of poly(ethylene terephthalate) fibers of diameter 45-47 μm by synthetic elastomer latex on the water permeability of the fibrous composite material was investigated. The technological factors determining the formation of the porous structure of the composite material were identified. A composite material with a permeability 2.5 times greater than that of the starting cloth was obtained for degree of impregnation 0.09. The material was impermeable to water for degree of impregnation 0.56. The structure of composite materials and distribution of elastomer particles on the cloth were studied using electron microscopy.