Hybrid Automotive Side Sill and Manufacturing Method Thereof

Abstract

The present disclosure provides a method of manufacturing a hybrid side sill for an automobile. The method includes a step for forming a pultruded profile part including a continuous fiber reinforced thermoplastic polymer, which has a heat deflection temperature of at least 200° C., and a step for attaching a terminal part made of steel to an end portion of the pultruded profile part.

What is claimed is: 
     
         1 . A method of manufacturing a hybrid side sill for an automobile, the method comprising the following steps:
 forming a pultruded profile part comprising a continuous fiber reinforced thermoplastic polymer, which has a heat deflection temperature of at least 200° C.; and   attaching a terminal part comprising at least one of steel or a thermoplastic polymer to an end portion of the pultruded profile part.   
     
     
         2 . The method according to  claim 1 , wherein the pultruded profile part is formed by a reactive pultrusion involving polyaddition of chain extenders. 
     
     
         3 . The method according to  claim 2 , wherein the chain extenders comprise at least one aromatic ring. 
     
     
         4 . The method according to  claim 2 , wherein a pultrusion die for performing the reactive pultrusion is heated to a die temperature of at least 340° C. 
     
     
         5 . The method according to  claim 1 , wherein the terminal part is attached by gluing to the pultruded profile part. 
     
     
         6 . The method according to  claim 5 , wherein the terminal part is attached to the pultruded profile by using a one-component epoxy glue. 
     
     
         7 . The method according to  claim 1 , further comprising a step of attaching at least one crash can comprising a fiber reinforced thermoplastic polymer to the pultruded profile part. 
     
     
         8 . The method according to  claim 7 , further comprising a step of forming the at least one crash can by pultrusion. 
     
     
         9 . The method according to  claim 1 , further comprising steps of:
 mounting the hybrid side sill with an automobile body;   applying paint to the automobile body; and   baking the painted automobile body at a baking temperature of at least 190° C.