Patent ID: 11897172
Assignee: INSTITUTE OF NUCLEAR ENERGY RESEARCH, ATOMIC ENERGY COUNCIL, EXECUTIVE YUAN, R.O.C
Field: Other special machines (Mechanical engineering)
Classification: CPC B  C  D  H  Y | IPC B  C  D  H

Claim 0:
1. A method for fabricating a polar plate of a plastic graphite composite comprising steps of:
(a) ball-milling a conductive powder composition with high carbon (>98%), less than 5 weight percent (wt %) of a flame retardant, and low ash (<1%) for at least 0.5 hours (hr) at a speed of at least 200 rounds per minute (rpm) to form a conductive powder;
(b) mixing the conductive powder, a thermoplastic/thermosetting resin adhesive composition, and a solvent by stirring at least 1 hr to form a mixture;
(c) directly and repeatedly calendering said mixture into a rigid plastic sheet by rolling/squeezing and obtaining a requested thickness of said plastic sheet;
(d) depositing said plastic sheet to process volatilization under a low-temperature vacuum to remove said solvent;
(e) obtaining a composite plastic plate through repeatedly calendering said plastic sheet to a requested thickness with at least one conductive woven iron fabric supporting member stacked into layers consisting of an upper layer of the plastic sheet together with a lower layer of the plastic sheet and a plurality of overlapping layers of the plastic sheet alternating with the conductive woven iron fabric support members to obtain at least one layer of a plastic composite plate having the plastic sheets and the at least one woven iron fabric supporting member; and
(f) graphic-shaping said plastic composite plate with required heat and pressure according to a requested graph to obtain a finished shaped plate.