Zhejiang Delong Teflon And Plastic Technology Co.,Ltd
+86-572-8837389
Products
Hot Products
News
Home > News > Content

What Is Difficult To Stick Teflon Reason?

Why is difficult to stick PTFE, the most important are the following reasons: first, low surface energy, the critical surface tension of normal, only 31 to 34 dyne / cm. Due to low surface energy, contact angle, can not be sufficiently adhesive wetting PTFE, and thus not well adhered to the PTFE; secondly, the degree of crystallinity, good chemical stability, PTFE swell and dissolve better than non-crystalline polymer difficulties begin when the adhesive coated on the PTFE surface hardly occurs polymer molecular chain into chain domain proliferation and entangled with each other, can not form a strong adhesion; third, PTFE structure highly symmetric, also belong to the kind of non-polar molecules high. PTFE and adsorbed on the surface of the adhesive by van der Waals forces (intermolecular forces) and caused by van der Waals forces comprising the alignment, induction forces and dispersion forces. For the surface of the non-polar polymer materials, do not have the ability to form an alignment force and induction conditions, and can only form a weak dispersion forces, and thus poor adhesion properties.

Based on the above understanding, in general, in order to solve the problem of bonded PTFE difficult, people mainly synthetic surface modification and departure from the new adhesive.


  • Company Profile
    DELONG is one of the top level China ptfe tube manufacturers and suppliers, as a professional exporter with productive factory, we are able to provide virgin and white insolution and lubricate ptfe tube, hdpe sheet, ptfe filled, ptfe film, ptfe hose, ptfe membrane, teflon board, teflon pipe, teflon sheet products with low price and good quality. Welcome to buy cheap products from us....
  • Product Category
  • Contact Us
    Address:No.269 Zishan Road, Wukang Economic Development Zone,Deqing County, Huzhou City, Zhejiang Province, China
    Tel: +86-572-8837389
    Fax: 86-572-8837089