Preparation withthe photosensitive resin for 3D printing stereolithography technique and study on its properties

The paper was reported that the method was prepared with 3DPSL-1 type photosensitive resin for 3D printing stereolithography technique,and the properties of the photosensitive resin were investigated.The main parameters of3DPSL-1 type photosensitive resin are as follows:the penetration depth(Dp) was 0.14 mm,the critical exposure(Ec)was 14.1 m J/cm2,and the viscosity at 30 ℃ was 359 m Pa·s.At 25 ℃,3DPSL-1 photosensitive resin density was 1.17 g/cm3,its UV-cured density was 1.21 g/cm3,and the cured volume shrinkage rate was 3.31%.The mechanical property and thermal property of the UV-cured 3DPSL-1 type photosensitive resin were determined,giving 21.0 MPa of tensile strength,1 108.2 MPa of tensile modulus,10.6% of elongation at break and 47 ℃ of glass transistion temperature.With 3DPSL-1 type photosensitive resin as the processing material,the part of a flexible pliers was fabricated by selecting the processing parameters of the stereolithography apparatus(HRPL-I),and the quality of the fabricated part was good.The preparation of the photosensitive resin will promote the further development of the domestic 3D printing stereolithography technique to play a positive role.