3 years ago

A novel technique for coating polypropylene yarns with polytetrafluorоethylene

A novel technique for coating polypropylene yarns with polytetrafluorоethylene
The article is devoted to an easy and effective method of giving polypropylene yarns the same extremely high chemical resistance as fluoropolymers yarns has. The method is based on the formation of an ultrathin, continuous and even coating of polytetrafluoroethylene on a surface of each filament forming yarn. The adhesion of a polytetrafluoroethylene coating to polypropylene is provided by applying of a diluted suspension of high-disperse polytetrafluoroethylene on a surface of a semi-hardened polypropylene yarn at the oiling stage. Later, the yarn is subjected to orientational stretching. In the process of stretching the coating becomes uniform and oriented thanks to an ability of polytetrafluoroethylene to pseudo-fluidity and a high coefficient of thermal expansion. The polypropylene yarn with a polytetrafluoroethylene coating gets an extremely high resistance to the influence of nitric acid and sodium hydroxide. Its frictional coefficient is close to the frictional coefficient of polytetrafluoroethylene and the strength is much higher than the strength of a common polypropylene yarn. The applied coating has a high resistance to the intensive abrasive action.

Publisher URL: www.sciencedirect.com/science

DOI: S0022113917303731

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.