4 years ago

Allyl Phenolic-Phthalonitrile Resins with Tunable Properties: Curing, Processability and Thermal Stability

Allyl Phenolic-Phthalonitrile Resins with Tunable Properties: Curing, Processability and Thermal Stability
In order to modify the curing procedure and broaden the processing windows of phthalonitrile, allyl phenolic moieties were incorporated into phthalonitrile resins at different ratios through sequential nucleophilic substitution reaction. The curing behavior, along with the reaction between allyl and nitrile groups, were investigated in detail. The curing kinetic equations were derived by Šesták-Berggren (SB) model. The rheological tests showed that the minimum viscosity significantly decreased from 15 Pa•s to less than 1 Pa•s and the processing windows varied from 24 °C to 89 °C with the allylation degree increasing. The novel oligomers demonstrated a maximum T5% of 494 °C, 74% char yield at 1000 °C and a high glass transition temperature exceeding 400 °C. The correlation between allylation degree and concerned parameters, including curing temperatures, processing windows and T5% was established, which allows for tailoring polymer structure for various applications.

Publisher URL: www.sciencedirect.com/science

DOI: S0014305717305591

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.