Flow Properties of Some Thermoplastics

Abstract

Scott Blair and Coppen¹, dealing with the compression of cylinders under constant stress, have given a general method of specifying the rheological properties of plastic materials by making use of two characteristics ψ, κ given by ψ = s,σ⁻¹ t^κ where s, σ, t have their usual meaning. Broome and Bilmes² have confirmed the validity of the treatment by their work on the stretching of asphalt strips.