Epoxy Doped, Nano‐scale Phase‐separated Poly‐Acrylates with Potential in 3D Printing
نویسندگان
چکیده
An efficient method to improve the mechanical performance of a commercially available photocure resin is described wherein modified with mixture cycloaliphatic epoxy and an anhydride curing agent. Photocured samples are thermally treated in subsequent step cure obtain interpenetrated polymer network (IPN) also complete reaction acrylate monomers remaining from photocure. The latter accomplished by thermal radical initiator added earlier into formulation together epoxy-anhydride. properties microstructure resulting IPN analyzed. Uniform quantitative conversions obtained, glass transition temperatures comparable conventional epoxies. liquid, uncured containing different amounts stable at 30 °C for several weeks. In fully cured epoxy-rich materials, nano-scale phase separation observed atomic force microscopy. This corroborated existence multiple relaxations determined dynamic analysis analysis. Specimens 50% weight epoxy-anhydride 3D printed customized masked image processing stereolithography, treated, subjected compression tests. Results show that Young's modulus increases 900% over neat resin.
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ژورنال
عنوان ژورنال: Macromolecular Materials and Engineering
سال: 2021
ISSN: ['1439-2054', '1438-7492']
DOI: https://doi.org/10.1002/mame.202000558