Hydrophobic and/or amphiphobic roll cover

Hydrophobic and/or amphiphobic roll cover

  • CN 104,334,795 B
  • Filed: 03/15/2013
  • Issued: 01/12/2021
  • Est. Priority Date: 04/06/2012
  • Status: Active Grant
First Claim
Patent Images

1. An industrial roll, comprising:

  • a substantially cylindrical metal core;

    a base layer adhered to the core and circumferentially covering the core;

    a polymeric topstock layer circumferentially overlying the base layer; and

    a hydrophobic and/or amphiphobic coating circumferentially covering said polymeric topstock layer, anda transition layer between the polymeric topstock layer and the hydrophobic and/or amphiphobic coating, wherein the transition layer comprises an intermediate phase mixture of the polymeric topstock layer and the hydrophobic and/or amphiphobic coating,wherein the polymeric topstock layer comprises polyurethane and the hydrophobic and/or amphiphobic coating comprises at least two hydrophobic and/or amphiphobic compounds and a matrix material comprising polyurethane, wherein the at least two hydrophobic and/or amphiphobic compounds are Polytetrafluoroethylene (PTFE) and hydrophobic diatomaceous earth, the hydrophobic and/or amphiphobic compounds each having a size in the range of 10 nm-500 μ

    m,wherein the hydrophobic and/or amphiphobic coating comprises polytetrafluoroethylene in a ratio of 5 to 30 parts by weight to 100 parts by weight of polyurethane, and hydrophobic diatomaceous earth in a ratio of 5 to 30 parts by weight to 100 parts by weight of polyurethane, andwherein the hydrophobic and/or amphiphobic coating has a water contact angle of greater than 120 °

    .

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×