A kind of modified fluororubber compounded rubber and preparation method thereof

A kind of modified fluororubber compounded rubber and preparation method thereof

  • CN 104,558,975 B
  • Filed: 12/12/2014
  • Issued: 10/30/2018
  • Est. Priority Date: 12/12/2014
  • Status: Active Grant
First Claim
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1. a kind of modified fluororubber compounded rubber, which is characterized in that include the component of following parts by weight:

  • Crude fluororubber, 100;

    HeatCracking black carbon, 30-50;

    Processing aid, 0.2-0.8;

    Vulcanizing agent, 1.0-5.0;

    Vulcanization aid, 4-8;

    Wherein, iodine and/or bromine are contained in the crude fluororubber molecule;

    The processing aid is selected from odium stearate, calcium stearate, zinc stearate, Brazil wax, polyethylene wax, perfluoroalkyl polyether oilOr liquid fluorubber;

    The vulcanizing agent is dual-tert-butyl peroxy isopropyl base benzene;

    The vulcanization aid is front three for allyl iso cyanurate;

    And the modification fluororubber compounded rubber is prepared by preparation method below:

    1) crude fluororubber, 50-60 DEG C of roller temperature is added, roller speed 18-30rpm adjusts roll spacing, ensures there is spacer gel between two rollers;

    2) it is sequentially added into following components, is often added one group, double roller is inverted 3-6 times after eating powder, operates on and beat 3-6 triangle bag, rollerPressure 1-2 minutes:

    A) processing aid;

    B) thermal cracking carbon black;

    C) vulcanizing agent and vulcanization aid;

    3) rubber compounding uniformly after thin logical 8-15 slice, stand 12-36h under room temperature;

    4) control roller temperature is at 55-65 DEG C, roll spacing 0.2-0.4mm, and roller speed 20-25rpm, back mixing is thin 10-15 times logical, then adjusts roll spacing1-3mm slices to obtain the final product;

    Wherein, the back mixing described in step

         4) is to beat triangle bag.

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