Apparatus and process for vacuum sublimation

Abstract

A vertical and a horizontal vacuum sublimation apparatus with high efficiency and processes thereof are provided, especially for the materials having high melting point and low vapor pressure. The vertical sublimation purification apparatus comprises a sublimation channel body, a material rack, a heating evaporation device, a condensation device, an incubating device and a product scratching device. The horizontal sublimation purification apparatus comprises a sublimation channel body, a material carrier, a heating evaporation device and two end pipes. The apparatuses of the present invention can be applied on high purity chemicals from mass production, and are capable of sublimating and purifying OLED illumination layer materials including ALq 3 , NPB and CuPc, which have high melting temperature and low vapor pressure.

1 . A horizontal sublimation apparatus, comprising: 
 a sublimation channel body;    a material carrier located inside said sublimation channel body for storing materials ready to be evaporated;    a heating evaporation device surrounding an evaporation pipe to control heating temperatures according to different materials for evaporating said materials;    an end pipe mounted respectively at two ends of said sublimation channel body with one said end pipe connecting to a vacuum air extracting system and the other said end pipe being sealed; and    a pipe-end sealing device for connecting two ends of said sublimation channel body to said two end pipes for achieving preferable sealing effect of said sublimation channel body.    
   
   
       2 . The horizontal sublimation apparatus as claimed in  claim 1 , wherein material carrier can be in the shape of a boat, a tank, a circular plate or any other forms that can be used to store materials.  
   
   
       3 . The horizontal sublimation apparatus as claimed in  claim 1 , wherein said pipe-end sealing device is a screw nut.