Abstract
The effects of mesogen-jacketed liquid crystalline polymer poly(dipropyl vinylterephthalate) (PDPVT) on the mechanical and thermal properties of diglycidyl ether of bisphenol-A (DGEBA) epoxy resin were investigated by impact test, tensile test and thermogravimetric analysis (TGA). The mechanism underlying the enhancement of mechanical properties of epoxy resin was studied using 1D wide-angle X-ray diffraction (WAXD) and scanning electron microscope (SEM). It was found that the mechanical properties of 1 wt%-5 wt% PDPVT/DGEBA composites were significantly improved compared to neat epoxy resin. Especially, the epoxy resin with 3 wt% PDPVT had the greatest increase in mechanical properties, with the impact strength, tensile strength and elongation while breaking increased by 87%, 59% and 174%, respectively. The increased mechanical strength was due to the fact that PDPVT maintained liquid crystalline phase in cured PDPVT/DGEBA composites, which would blunt the crack tip and prevent crack propagation. Moreover, PDPVT had slight effect on the thermal stability properties of epoxy resin.
| Original language | English |
|---|---|
| Pages (from-to) | 1021-1026 |
| Number of pages | 6 |
| Journal | Science China Chemistry |
| Volume | 58 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 30 Jun 2015 |
Keywords
- epoxy resin
- mechanical properties
- mesogen-jacketed liquid crystalline polymer
- thermal stability properties
Fingerprint
Dive into the research topics of 'Mechanical and thermal properties of mesogen-jacketed liquid crystalline polymer/epoxy resin composites'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver