4 years ago

Synthesis of oxazolidines as latent curing agents for single-component polyurethane adhesive and its properties study

Synthesis of oxazolidines as latent curing agents for single-component polyurethane adhesive and its properties study
Liemei Yuan, Peirong Qiang, Jun Gao, Yiyuan Shi
Four oxazolidine compounds OX1–OX4 were prepared. Their structures were characterized using Fourier transform infrared spectra, 1H-NMR, 13C-NMR, and ESI-MS. The hydrolysis kinetics research of oxazolidines suggested that the hydrolysis of oxazolidine followed the first-order reaction. The gap of the ground energies between the open- and closed-ring was calculated using Gaussian software, which indicated that the stability of the open-ring system of OX1 was the best. Then, the obtained oxazolidines were applied to single-component polyurethane (SPU) and filler CaCO3 was added to investigate the effect of the two above on the properties of SPU. The results show that the pore size and the number of bubbles produced in the SPU decreased with the increase of the rate of hydrolysis of the added oxazolidine, and the bondability of the polyurethane was better. With the increase of CaCO3 content, the polyurethane surface became smoother and the bond strength was stronger. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45722.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/app.45722

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.