Photosensitive resin for laser 3D printing and preparation method thereof
A photosensitive resin and 3D printing technology, applied in the direction of additive processing, etc., can solve the problems of affecting the mechanical strength of printed parts, shrinkage and deformation of printed parts, large shrinkage deformation, etc., and achieve the effects of small shrinkage deformation, improved quality, and simple operation
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Embodiment 1
[0023] 1. In a 5000 ml glass three-necked flask equipped with a stirrer and a condenser, add 600 grams of tris(2-hydroxyethyl)isocyanurate triacrylate, 3,3-[oxybismethylene]- 600 grams of bis﹝3-ethyl﹞oxetane, 630 grams of bisphenol A epoxy resin, 900 grams of alicyclic epoxy resin, 90 grams of 1-hydroxycyclohexyl benzophenone, triarylsulfonium six 120 grams of fluoroantimonate, 60 grams of 3-methacryloxypropyl trimethoxy silicon.
[0024] 2. Heat to 50°C and stir for 60 minutes to make it a light yellow transparent and uniform liquid. This liquid is a prepared photosensitive resin, and its critical exposure amount E is measured. C 17.5mj / cm 2 .
[0025] 3. Use the Lite300 SLA3D printer produced by Union Thai to make the test piece, and then cure it in a UV box with a power of 500 mW for 90 minutes. The measured TG value is 128°C, and the warpage factor CF (6) of the test piece is 0.01 , CF (11) = 0.03, the tensile strength of the test piece is 28.5MPa, the elongation at bre...
Embodiment 2
[0027] 1. In a 5000 ml glass three-necked flask equipped with a stirrer and a condenser, add 600 grams of tricyclodecane dimethanol diacrylate, 3,3-[oxybismethylene]-bis[3-ethyl ﹞Oxetane 600 grams, bisphenol A epoxy resin 630 grams, alicyclic epoxy resin 900 grams, 1-hydroxycyclohexyl benzophenone 90 grams, triarylsulfonium hexafluoroantimonate 120 grams , 60 grams of 3-methacryloxypropyltrimethoxysilane.
[0028] 2. Heat to 50°C and stir for 60 minutes to make it a light yellow transparent and uniform liquid. This liquid is a prepared photosensitive resin, and its critical exposure amount E is measured. C 18mj / cm 2 .
[0029] 3. Use the Lite300 SLA3D printer produced by Union Thai to make the test piece, and then cure it in a UV box with a power of 500 mW for 90 minutes. The measured TG value is 115°C, and the warpage factor CF (6) of the test piece is 0.01 , CF (11) = 0.02, the tensile strength of the test piece is 26.3MPa, the elongation at break is 4.8% and the impact s...
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