Abstract
A series of unsaturated polyesters based on phthalic anhydride (PHA), maleic anhydride (MA), ethylene glycol (EG), diethylene glycol (DG), triethylene glycol (TG), propylene glycol (PG), and styrene (Sty) were prepared. The molecular weights of the prepared polyesters were determined by the end group analysis. The crosslinking of unsaturated polyesters by copolymerization reaction between the double bonds from maleic anhydride and styrene has been studied. The effect of the structure of the resin on its curing behavior has been investigated. A marked delay in cure has been observed when EG was replaced or combined with other glycols. The maximum curing temperature, Young’s modulus and compressive strength were found to be related to the molecular weight of the glycol incorporated in these castings.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
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.