Component having vibration-damping properties, mixture for manufacturing the component, and method of manufacturing such a component

Abstract

In a component having vibration-damping properties, a mixture for manufacturing the component, and a method of manufacturing such a component, the component has granular and/or grain- and/or flake-shaped piezoelectric particles which are embedded in a polymer matrix in a proportion of at least 10 volume %. In order to improve the damping effect, at least some of the piezoelectric particles have a polarization which is different from zero.

1 . to  21 . (Canceled).  
     
     
         22 . A mixture for manufacturing a component having vibration-damping properties using a molding method for components made of plastic, the component including at least one of granular, grain-shaped and flake-shaped piezoelectric particles embedded in at least one matrix polymer forming a matrix in a level of at least 10 volume %, wherein, after the matrix polymer has set, at least some of the piezoelectric particles have a particle polarization other than a zero particle polarization, comprising: 
 at least one of the matrix polymer and precursors of the matrix polymer; and    the piezoelectric particles mixed with the at least one of the matrix polymer and the precursors of the matrix polymer.    
     
     
         23 . The mixture according to  claim 22 , wherein the molding method includes at least one of injection molding and pressing.  
     
     
         24 . The mixture according to  claim 22 , wherein at least some of the piezoelectric particles include a particle polarization other than zero in the mixture.  
     
     
         25 . A method of manufacturing a component having vibration-damping properties, the component including at least one of granular, grain-shaped and flake-shaped piezoelectric particles embedded in at least one matrix polymer forming a matrix in a level of at least 10 volume %, wherein, after the matrix polymer has set, at least some of the piezoelectric particles have a particle polarization other than a zero particle polarization, comprising the steps of: 
 forming a particle-containing mixture from at least one of the matrix polymer and precursors of the matrix polymer and from the piezoelectric particles, the piezoelectric particles including particle polarizations different from zero;    molding the component from the mixture using a molding method for components made of plastic; and    crosslinking the polymer matrix.    
     
     
         26 . The method according to  claim 25 , wherein the molding method includes at least one of injection molding and pressing.  
     
     
         27 . The method according to  claim 25 , wherein the at least one of the matrix polymer and the precursors of the matrix polymer and the piezoelectric particles are mixed in the forming step in an intimate manner.  
     
     
         28 . A method of manufacturing a component having vibration-damping properties, the component including at least one of granular, grain-shaped and flake-shaped piezoelectric particles embedded in at least one matrix polymer forming a matrix in a level of at least 10 volume %, wherein, after the matrix polymer has set, at least some of the piezoelectric particles have a particle polarization other than a zero particle polarization, comprising the steps of: 
 forming a particle-containing mixture from at least one of the matrix polymer and precursors of the matrix polymer and from the piezoelectric particles;    molding the component from the mixture using a molding method for components made of plastic;    crosslinking the polymer matrix; and    providing the piezoelectric particles with a particle polarization other than zero at least one of during and after the crosslinking step.    
     
     
         29 . The method according to  claim 28 , wherein the at least one of the matrix polymer and precursors of the matrix polymer and the piezoelectric particles are intimately mixed in the forming step.  
     
     
         30 . The method according to  claim 28 , wherein the molding method includes at least one of injection molding and pressing.  
     
     
         31 . A method of manufacturing a component having vibration-damping properties, the component including at least one of granular, grain-shaped and flake-shaped piezoelectric particles embedded in at least one matrix polymer forming a matrix in a level of at least 10 volume %, wherein, after the matrix polymer has set, at least some of the piezoelectric particles have a particle polarization other than a zero particle polarization, comprising the steps of: 
 manufacturing a particle-containing blank from at least one of the matrix polymer and precursors of the matrix polymer and the piezoelectric particles using a molding method for components made of plastic; and    orienting the particle polarization of at least some piezoelectric particles at least before the matrix polymer is completely crosslinked.    
     
     
         32 . The method according to  claim 31 , wherein the molding method includes at least one of injection molding and pressing.  
     
     
         33 . A method of manufacturing a component using an application method, the component having vibration-damping properties and including at least one of granular, grain-shaped and flake-shaped piezoelectric particles embedded in at least one matrix polymer forming a matrix in a level of at least 10 volume %, wherein, after the matrix polymer has set, at least some of the piezoelectric particles have a particle polarization other than a zero particle polarization, comprising the steps of: 
 forming a mixture from at least one of the matrix polymer and precursors of the matrix polymer and the piezoelectric particles;    adding piezoelectric particles having a particle polarization which is different from zero form the mixture;    molding the component from the mixture using a molding method for components made of plastic; and    crosslinking the polymer matrix.    
     
     
         34 . The method according to  claim 33 , wherein the application method includes spraying.  
     
     
         35 . The method according to  claim 33 , wherein the at least one of the matrix polymer and precursors of the matrix polymer and the piezoelectric particles are intimately mixed in the forming step.  
     
     
         36 . The method according to  claim 33 , wherein the molding method includes at least one of injection molding and pressing.  
     
     
         37 . A method of manufacturing a component having vibration-damping properties, the component including at least one of granular, grain-shaped and flake-shaped piezoelectric particles embedded in at least one matrix polymer forming a matrix in a level of at least 10 volume %, wherein, after the matrix polymer has set, at least some of the piezoelectric particles have a particle polarization other than a zero particle polarization, comprising the steps of: 
 forming a mixture from at least one of the matrix polymer and precursors of the matrix polymer and the piezoelectric particles;    introducing the mixture into a molding tool; and    orienting the particle polarization of at least some piezoelectric particles at least one of during the introduction of the mixture and during crosslinking of the matrix polymer.    
     
     
         38 . The method according to  claim 37 , wherein the at least one of the matrix polymer and precursors of the matrix polymer and the piezoelectric particles are intimately mixed in the forming step.  
     
     
         39 . The mixture according to  claim 22 , wherein the piezoelectric particles are prepolarized.  
     
     
         40 . The method according to  claim 25 , wherein the piezoelectric particles are prepolarized.  
     
     
         41 . The method according to  claim 28 , wherein the piezoelectric particles are prepolarized.  
     
     
         42 . The method according to  claim 31 , wherein the piezoelectric particles are prepolarized.  
     
     
         43 . The method according to  claim 33 , wherein the piezoelectric particles are prepolarized.