Expandable particles for producing polymethacrylimide foamed material and application thereof

Expandable particles for producing polymethacrylimide foamed material and application thereof

  • CN 101,857,656 A
  • Filed: 05/24/2010
  • Published: 10/13/2010
  • Est. Priority Date: 05/24/2010
  • Status: Active Grant
First Claim
Patent Images

1. expandable particles that is used to produce polymethacrylimide foam material, it is characterized in that by following method prepared:

  • the consumption of each component is in weight part, with 35~

    65 parts of acrylic or methacrylic acid, 35~

    65 parts of vinyl cyanide or methacrylonitriles, 0.01~

    5 part of initiator, 0~

    20 part of molecular weight regulator, 0.1~

    15 part of whipping agent, 0~

    20 part of suds-stabilizing agent, 0~

    50 part of 0~

    20 part of linking agent and additive insert mould, prior to 30~

    50 ℃

    of preliminary bulk polymerizations after 10~

    72 hours, again in 50~

    100 ℃

    of further bulk polymerizations 1~

    30 hour, obtain multipolymer sheet material, afterwards multipolymer sheet material is pulverized, screening promptly obtains being used to produce the expandable particles of polymethacrylimide foam material.

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