The invention discloses an injection die for an injection and pull-
extrusion process and a method for preparing a
resin matrix composite by using the same, relating to an injection die and a method for preparing a
resin matrix composite by using the same. Through the invention, the problem that the existing injection dies for the injection and pull-
extrusion process are complicated in structure is solved. The injection die is provided with a die cavity and a glue injection hole, wherein the die cavity consists of a
round table-shaped die cavity and a cylindrical die cavity; and the glue injection hole is located on the die wall of the
round table-shaped die cavity. The method comprises the steps of: injecting a
resin matrix into the
round table-shaped die cavity through the glue injectionhole; causing continuous fibers to enter the die cavity of the injection die from a large-
diameter end of the round table-shaped die cavity of the injection die under the traction of a traction device and then enter a die cavity of a pull-
extrusion molding die through the cylindrical die cavity; and carrying out
sizing and curing. The die cavity of the injection die is conical in front part and flat in rear part, the fibers of a
solvent impregnated resin are stressed by a small-
diameter end of the round table-shaped die cavity and the die wall of the cylindrical die cavity and then air bubbles are discharged, therefore, the
void ratio of the composite is reduced and the
mechanical property is improved. The injection die is simplified and the application range of the injection and pull-extrusion process is enlarged.