摘要
There are four key technologies in rapid prototyping: rapid solidified photo-cured material, stable and continuous ultraviolet laser with small spot, precise 3D stage, and flexible CAD software. The photo-cured polymer plays an important role in rapid prototyping,for which not only rapid solidification, but also the high strength, small deformation and stress, one-time high solidity and fixed lamination are needed. In addition, product hardness or softness is relative to the material solidity. So the controlling to the material solidity is a key problem in rapid prototyping.
