Fiber-reinforced body, method for producing the body and pipe or tube sheet having the body

Abstract

A body includes a ceramic material and is suitable for use in a heat exchanger and for conducting fluids. An outer side of the body is at least partially encompassed by at least two fiber bundles in the longitudinal and/or circumferential direction and force-lockingly connected thereto. The fiber bundles are pre-tensioned and neighboring sections of the fiber bundles are disposed at a predetermined distance. A method for producing a body includes providing a body including a ceramic material and being suitable for use in a heat exchanger and for conducting fluids, and encompassing at least sections of the outer side of the body with at least two fiber bundles under a predetermined pretension forming a force-locking connection and with neighboring sections of the fiber bundle disposed at a predetermined distance. A heat exchanger pipe or tube sheet includes the body.

1 . A body assembly, comprising:
 a ceramic material body configured for use in a heat exchanger and for conducting fluids, said body having an outer side and longitudinal and circumferential directions;   at least two fiber bundles at least partially encompassing and force-lockingly connected to said outer side of said body in at least one of said longitudinal and circumferential directions; and   said fiber bundles being pre-tensioned and having neighboring sections disposed at a predetermined distance from each other.   
     
     
         2 . The body assembly according to  claim 1 , wherein said body is a pipe-shaped body or cover having a plurality of holes extending in said longitudinal direction, and said fiber bundles form a network. 
     
     
         3 . The body assembly according to  claim 1 , wherein said fiber bundles have a diameter, and a ratio of said predetermined distance between neighboring sections of said fiber bundles and said diameter of said fiber bundles is between 5:1 and 10:1. 
     
     
         4 . The body assembly according to  claim 1 , wherein said fiber bundles are carbon fiber bundles. 
     
     
         5 . The body assembly according to  claim 1 , wherein said ceramic material is dense sintered silicon carbide. 
     
     
         6 . The body assembly according to  claim 5 , wherein said dense sintered silicon carbide contains at least one ceramic or mineral filler material. 
     
     
         7 . The body assembly according to  claim 1 , wherein said force-locking connection between said fiber bundles and said outer side is an adhesive system selected from the group of adhesives consisting of phenolic resin, epoxy resin and polysilazane-based resin. 
     
     
         8 . The body assembly according to  claim 7 , wherein said adhesive system is mixed with silicon and silicon carbide filler material. 
     
     
         9 . A method for the production of a body assembly, the method comprising the following steps:
 a) providing a body including a ceramic material and being configured for use in a heat exchanger and for conducting fluids; and   b) encompassing at least sections of an outer side of the body with at least two fiber bundles under a predetermined pre-tension forming a force-locking connection and with neighboring sections of the fiber bundle disposed at a predetermined distance from each other.   
     
     
         10 . The method according to  claim 9 , which further comprises carrying out step b) by encompassing at least sections of the outer side of the body with at least two fiber bundles in the form of a network. 
     
     
         11 . The method according to  claim 9 , which further comprises carrying out step b) by encompassing at least sections of the outer side of the body with at least two fiber bundles having a ratio of the predetermined distance between neighboring sections of the fiber bundles and a diameter of the fiber bundles of between 5:1 and 10:1. 
     
     
         12 . The method according to  claim 9 , which further comprises, before step b), at least partially applying an adhesive system to the body and/or the fiber bundle and then hardening or burning the adhesive system. 
     
     
         13 . The method according to  claim 12 , which further comprises selecting the adhesive system from the group of adhesives consisting of phenolic resin, epoxy resin and polysilazane-based resin. 
     
     
         14 . The method according to  claim 13 , which further comprises mixing the adhesives with silicon and silicon carbide filler material. 
     
     
         15 . The method according to  claim 9 , wherein the body is a pipe-shaped body or cover having a plurality of holes extending in longitudinal direction of the cover. 
     
     
         16 . The method according to  claim 9 , wherein the fiber bundles are carbon fiber bundles. 
     
     
         17 . The method according to  claim 9 , wherein the ceramic material is dense sintered silicon carbide. 
     
     
         18 . The method according to  claim 17 , wherein the dense sintered silicon carbide contains at least one ceramic or mineral filler material. 
     
     
         19 . A heat exchanger pipe or tube sheet, comprising:
 a body assembly according to  claim 1 .