Abstract
A hybrid photocurable resin is prepared to solve the curl distortion of parts in stere olithography. The resin cures in radical photopolymerization of ethoxylated diacrylate and cationic photopolymerization of epoxy concurrently. The disadvantages of the cationic photopolymerization of epoxy, affected by moisture and slow photocuring speed, are overcome by incorporating radical photopolymerization of ethoxylated diacrylate in the hybrid photopolymerization system. At the same time, the mechanical properties of the hybrid resin are improved, and the curing speed of the hybrid resin is close to that of radical photopolymerization of ethoxylated diacrylate. The hybrid resin is compared with the cationic polymerized epoxy and also with the free radical polymerized epoxy acrylate, and the result shows that the hybrid photopolymerization combines the advantages of radical and cationic photopolymerization. Using the hybrid resin in stereolithograpy apparatus (LPS-600A) to fabricate parts, there is little curl distortion. It can meet the requirements for fabricating high accuracy parts.
| Original language | English |
|---|---|
| Pages (from-to) | 1155-1158 |
| Number of pages | 4 |
| Journal | Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University |
| Volume | 35 |
| Issue number | 11 |
| State | Published - Nov 2001 |
Keywords
- Cationic photopolymerization
- Hybrid photopolymerization
- Radical photopolymerization
- Stereolithography