Method for molding hollow vehicle part, hollow vehicle part and automobile

A hollow vehicle part prepared by a method comprising the following steps:

• a. preparing an inflatable core mold matching a target vehicle part on a geometrical shape in an inflated state, coating curable thermoplastic resin on the surface of the inflatable core mold in the inflated state, and performing shaping to obtain a shaped core mold;
• b. braiding fibers on the surface of the shaped core mold to form at least one braided layer to obtain a preform;
• c. conveying the preform into a curing agent passage, and sequentially passing through a heating section and a coating section in the curing agent passage, wherein the heating section, the preform is preheated to melt the thermoplastic resin, and in the coating section, the molten thermoplastic resin is mixed with a curing agent to obtain a preform mixed with curing agent;
• and
• d. conveying the preform mixed with curing agent into a curing passage for curing and molding, then deflating the inflatable core mold, and taking out the inflatable core mold to obtain the hollow vehicle part.

An automobile, comprising hollow vehicle part, which is prepared by a method comprising the following steps:

• a. preparing an inflatable core mold matching a target vehicle part on a geometrical shape in an inflated state, coating curable thermoplastic resin on the surface of the inflatable core mold in the inflated state, and performing shaping to obtain a shaped core mold;
• b. braiding fibers on the surface of the shaped core mold to form at least one braided layer to obtain a preform;
• c. conveying the preform into a curing agent passage, and sequentially passing through a heating section and a coating section in the curing agent passage, wherein the heating section, the preform is preheated to melt the thermoplastic resin, and in the coating section, the molten thermoplastic resin is mixed with a curing agent to obtain a preform mixed with curing agent;
• and
• d. conveying the preform mixed with curing agent into a curing passage for curing and molding, then deflating the inflatable core mold, and taking out the inflatable core mold to obtain the hollow vehicle part.