Structure and Properties of Composites with Sunken-Loop Knit Fabric Filler

Abstract

Samples of composites based on epoxy resin and sunken-loop knit fabric with satin and lasting 1+1 interlocking are investigated. It is shown that the strength anisotropy coefficient of the composite can be counted as a double ratio of the knit fabric density along the course to the knit fabric density along the wale. The extensibility of the knit fabric does not have a significant effect on the strength of the composite reinforced by it. The maximum strength of the composite is attained when the loop modulus is above 50. In mechanical properties, composites with a knit fabric filler are close to composites with quasi-continuous reinforcement, for example, with individual unidirectional threads.