Abstract
It is an effective way to improve the toughness, dielectrical property, and electrical property of epoxy vinyl ester resin (VE) via embedding hyperbranched polymer. In the present study, a new kind of flexible chain blocking hyperbranched polyester (HBP) with the rich unsaturated double bond has been designed and synthesized. The hyperbranched structure of HBP was characterized by NMR and FT-IR. Based on dielectric property test, it could be found that HBP could reduce dielectric constant (e) of VE compound, and the interaction between the polar functional groups in the flexible chain and epoxy resin could reduce dielectric loss (tgδ) within a certain frequency. The results of mechanical measurement showed that the addition of HBP could improve the mechanical properties of the resin systems. When HBP content was 20 wt%, the impact strength of modified epoxy anhydride curing compound reached 18.9 kJ/mm−2, and the bending strength of modified epoxy anhydride curing compound reached 134.0 MPa.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Materials Science: Materials in Electronics
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
