| 摘要 |
PURPOSE:To obtain a carbonaceous plate excellent in impenetrativeness, material strength and corrosion resistance by putting a primary form comprising carbonaceous powder and a thermosetting resin on a heated flat plate to make the form into a plate and by curing this plate under pressure followed by baking. CONSTITUTION:Firstly, a feedstock component comprising carbonaceous powder and a thermosetting resin is kneaded under a vacuum to make a primary forming. Second, the resulting primary form is put on a flat plate kept at 80-200 deg.C, followed by repeating pressurizing/depressurizing cycle to make the form into a plate. Then, the plate is made to descend under a pressure of 20-250 kgf/cm<2> and carbonized under baking in a nonoxidative atmosphere. For the extent of depressurization, lowering of the resultant pressure level to a level lower than that just before pressurization is enough; however, for the purpose of the effective proceeding of reaction by-product volatilization, it is desirable that the resulting pressure level on depressurization be regulated to <=0.5 based on 1 of the level just before pressurization (pref. 0kgf/cm<2> or so). |
