本新穎3D 噴墨列印技術係藉由將反應型融合劑(聚異氰酸酯)快速噴塗在鋪層好的預熱高分子粉體(溫度控制在低於高分子熔點)列印區域，同時施加近紅外光熱源，引發反應型融合劑與高分子(聚醯胺、熱塑型聚氨基甲酸酯等)粉體之交聯聚合反應並放出大量熱，產生增效作用(synergistic effect)，致使其溫度高於高分子粉體之熔點，進而將粉末熔融聚合成型。
This invention discloses a novel 3D ink jet printing process, in which polyisocyanate (as a reactive fusion agent) is applied to a preheated build material (e.g., polyamides, thermoplastic polyurethanes in powder form) to a temperature below its melting point. This is followed by exposing the build material and the applied reactive fusion agent to near-infrared radiation to initiate exothermic crosslinking polymerization of the fusion agent with the build material. As a result, the temperature of the printing region increases to a point above the melting point of the polymer powder, thereby leading to the formation of a part layer.
|
專利行銷平台
