Nucleation of Gas Bubbles in Extrusion Foaming of High-Pressure Polyethylene

The nucleation of gas bubbles in extrusion foaming of high-pressure polyethylene is known as. Experiments display that undissolved gas microbubbles in the perfect solution is being foamed can have a significant influence on the number density of pores in the foam. A simple model for estimating double screw extruder the real number density of supercritical nuclei is proposed. The effect of the proper time of mixing of gas and polymer in the extruder, the talc focus, and the geometric features of the nozzle on the number density of pores in the foam is usually analyzed.

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