Abstract
Milled glass fiber (MG)/polyurethane (PU)/epoxy resin (EP) encapsulating material was prepared by vacuum priming. The morphology and mechanical properties of the material were studied. The results indicate that the tensile strength and impact strength of PU/EP increase first, and then decrease with the increase of content of PU. When the content of PU is 15%, the mechanical properties of composite are optimal: the tensile strength is 60.57 MPa and impact strength is 23.56 kJ/m2. The tensile strength and impact strength are increased by 32.77% and 115%, respectively, compared with the pure EP. In order to improve the strength further and remain the toughness, MG was employed to reinforce PU/EP composite. When the mass ratio of MG to EP is 1:1, the tensile strength is 79.72 MPa and the impact strength is 17.83 kJ/m2. Compared with the composite reinforced by SiO2 particles with the same content, the tensile strength and impact strength of MG/PU/EP are increased by 18.91% and 11.51%, respectively.
| Original language | English |
|---|---|
| Pages (from-to) | 51-55 |
| Number of pages | 5 |
| Journal | Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) |
| Volume | 38 |
| Issue number | 1 |
| State | Published - Feb 2007 |
| Externally published | Yes |
Keywords
- Encapsulating material
- Epoxy resin
- Mechanical properties
- Milled glass fiber
- Morphology
- Polyurethane