Method for preparing hollow microspheres by using waste rubber

Method for preparing hollow microspheres by using waste rubber

  • CN 104,004,219 A
  • Filed: 04/28/2014
  • Published: 08/27/2014
  • Est. Priority Date: 04/28/2014
  • Status: Active Application
First Claim
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1. utilize waste old to prepare a method for hollow microsphere, it is characterized in that its synthetic method comprises the steps:

  • A. waste and old rubber particle is pulverized as 60-200 order size particles through pulverizer;

    B. waste and old rubber particle adds tensio-active agent and deionized water, adds a certain amount of swelling agent after ultrasonic activation 15-17min, is warming up to 90-110 oc;

    C. with the NaOH aqueous solution of 10 %, adjust system pH to arriving 10-13, rapid cool to room temperature after reaction 3-5 h, adjusts system pH to 2.2 with the HCl aqueous solution of 10 %, is warming up to 90-110 oafter adjusting system pH to 7 with the NaOH aqueous solution of 10 % after C reaction 3-5 h, obtain hollow micelle emulsion;

    D. complete reaction by processes such as washing, screenings, by swelling agent recycling use, rubber extruding is dried and obtains waste rubber porous microsphere, is hollow microsphere.

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