Rapid densification of porous bodies (preforms) with high viscosity resins or pitches using a resin transfer molding process

摘要: A resin transfer molding (RTM) process is disclosed for rapidly filling a fibrous preform and/or rigid, porous body with high viscosity or pitch. The suitable impregnated multiple bodies stacked in single mold. uses rigid which placed into mold matching the desired part geometry. injected at temperature and pressure. After cooling, infiltrated component removed from constructed two halves fitted to form least one cavity. gate nozzle set of halves, valve admits pitch area. Venting vacuum can be applied held hydraulic press an extruder, optionally accumulator, supplies molten