TY - JOUR
T1 - Mechanical and thermal properties of mesogen-jacketed liquid crystalline polymer/epoxy resin composites
AU - Chai, Chunpeng
AU - Yin, Fangfang
AU - Li, Guoping
AU - Luo, Yunjun
N1 - Publisher Copyright:
© 2015 Science China Press and Springer-Verlag Berlin Heidelberg.
PY - 2015/6/30
Y1 - 2015/6/30
N2 - 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.
AB - 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.
KW - epoxy resin
KW - mechanical properties
KW - mesogen-jacketed liquid crystalline polymer
KW - thermal stability properties
UR - http://www.scopus.com/inward/record.url?scp=84930081337&partnerID=8YFLogxK
U2 - 10.1007/s11426-015-5372-3
DO - 10.1007/s11426-015-5372-3
M3 - Article
AN - SCOPUS:84930081337
SN - 1674-7291
VL - 58
SP - 1021
EP - 1026
JO - Science China Chemistry
JF - Science China Chemistry
IS - 6
ER -