Abstract
The solvent -free nano SiO2 fluid was prepared with nanoparticle SiO2 as the core, N,N-didecyl-N-methyl-N-(3-trimethoxysilylpropyl) ammonium chloride (SID3392) as the necklayer and poly(ethylene glycol) 4-nonylphenyl3-sulfopropyl ether potassium salt (PEGS) as the canopy. The solvent -free nano SiO2 fluid is a Newtonian fluid with low viscosity at room temperature, and its viscosity is 4.3 Pa·s at 26.5 ℃. The mass fraction of SiO2 in the solvent -free nano SiO2 fluid is 13.65%.The solvent -free nano SiO2 fluid is loaded in the epoxy matrix to prepare solvent -free nano SiO2 fluid/epoxy composites. The TEM results confirm that the solvent -free nano SiO2 fluid disperses well in the epoxy matrix. DSC test shows that the solvent -free nano SiO2 fluid can decrease the curing temperature of the epoxy. When the content of solvent -free nano SiO2 fluid in the composites reaches up to 2.5wt%, the impact properties of the epoxy is improved up to 164.7%. The glass transition temperature is improved by 15.4 ℃. The SEM results of fracture surface also confirm that solvent -free nano SiO2 fluid can improve the toughness of epoxy.
| Original language | English |
|---|---|
| Pages (from-to) | 1212-1218 |
| Number of pages | 7 |
| Journal | Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica |
| Volume | 31 |
| Issue number | 5 |
| State | Published - 1 Oct 2014 |
Keywords
- Composites
- Epoxy
- Monodispersity
- Newtonian fluid
- Solvent -free nano SiO fluid