For the method for recirculation based on the goods of fiber-reinforced polymer

For the method for recirculation based on the goods of fiber-reinforced polymer

  • CN 102,015,856 B
  • Filed: 05/07/2009
  • Issued: 01/20/2016
  • Est. Priority Date: 05/09/2008
  • Status: Active Grant
First Claim
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1. for the method for the polymer product of recycled fibers enhancing, according to the method:

  • -the described goods finally cut into pieces are dissolved in and can dissolve described polymkeric substance but described fiber can not be dissolved and can be formed in the solvent of azeotropic mixture with water, thus form solution;

    -from described solution, reclaim described fiber;

    -described fiber is washed with solvent in the following way, described mode for by they are put into described solvent in a form of slurry and by stir this slurry and/or by make described solvent cycle through it;

    -from described slurry, reclaim these washed fibers;

    With-stripping that the fiber experience steam of described recovery is carried out thus substantially remove described solvent,Wherein there is at least twice washing step, wherein for each washing step, cleaning solvent to be stored in the surge tank of separation and be used for subsequently batch, wherein last washing step carries out with clean hot solvent, and wherein the hot solvent of the surge tank of the solvent washed from the first time containing last batch is used for described dissolving.

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