Low-cost polyurethane material for filling inner part of safety tire and using method thereof

Low-cost polyurethane material for filling inner part of safety tire and using method thereof

  • CN 106,397,724 B
  • Filed: 08/18/2016
  • Issued: 08/10/2021
  • Est. Priority Date: 08/18/2016
  • Status: Active Grant
First Claim
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1. A polyurethane material for filling the inner part of a safety tire is prepared from two components in percentage by weight:

  • the component A comprises;

    diisocyanate 5-15%115-40 percent of polyether polyol50 to 75 percent of diluentReacting for 2 hours at 80-90 ℃

    to obtain a prepolymer with isocyanate content of 2-7%;

    wherein the diisocyanate is selected from TDI or MDI-100 or a mixture thereof;

    the polyether polyol 1 is selected from polypropylene oxide polyether polyols having a functionality of 2 or 3 and a number average molecular weight of 2000-;

    the diluent is selected from naphthenic oil, aromatic oil, tris (2-chloropropyl) phosphate, 2, 4-trimethyl-1, 3-pentanediol diisobutyrate;

    and B component;

    220-47.5% of polyether polyol, 1-5% of chain extender, 1-5% of cross-linking agent, 50-75% of diluent, 0.3-1.0% of catalyst and 0-2% of anti-aging agent to obtain component B;

    the chain extender is 1, 4-butanediol or diethylene glycol;

    the cross-linking agent is 4, 4'"'"' -bis-sec-butylaminodiphenylmethane or diethyltoluenediamine;

    the polyether polyol 2 is polypropylene oxide polyether polyol with the number average molecular weight of 4000-8000 and the functionality of 2 or 3;

    the volume ratio of the component A to the component B is 100;

    100.

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