BREAKER DIAPHRAGM COMPOSITION MADE OF TEMPERATURE POLYURETHANE AND BREAKER DIAPHRAGM USING THEREOF

摘要

PURPOSE: A diaphragm composition for an accumulator is provided to satisfy a standard value in a tensile strength, elongation, tear strength, etc and to obtain excellent quality. CONSTITUTION: A diaphragm composition for an accumulator using TPU is manufactured by a step of preparing a prepolymer which is polymerized of polyol consisting of one or more of polyester polyol, polyether polyol, polycarbonate polyol, and polytetramethylene polyol, and isocyanate; a step of preparing a raw material for the diaphragm by cooling the prepolymer and a chain extender; and a step of measuring the raw material of the diaphragm.