A kind of low melt viscosity thermoplastic polyimide material and its 3D printing forming method

A kind of low melt viscosity thermoplastic polyimide material and its 3D printing forming method

  • CN 103,980,489 B
  • Filed: 04/30/2014
  • Issued: 08/31/2018
  • Est. Priority Date: 04/30/2014
  • Status: Active Grant
First Claim
Patent Images

1. a kind of polyimide compound, by following components A)



  • B)

    And C)

    It polymerize by the following method:

    First by following A)

    Diamines and appropriate polar organic solvent mixing, B is added after being completely dissolved)

    Dianhydride and C)

    EnvelopeHold agent;

    Imidization is carried out after completion of the reaction, above-mentioned solution is sunk in atent solvent, through being filtered, washed and vacuum heatAfter obtain yellow powder:

    A)

    One or more monomers in aromatic diamine, alicyclic diamine;

    B)

    One or more monomers in aromatic dianhydride, alicyclic dianhydride;

    WithC)

    End-capping reagent;

    The wherein described aromatic diamine monomer is selected from 2,2 '"'"'-bis trifluoromethyls -4,4 '"'"'-benzidine, bis- (the 4- amino-of 1,4-2- trifluoromethyls) benzene, 4,4 '"'"'-bis- (4- amino -2- 4-trifluoromethylphenopendants) biphenyl, 2,2 '"'"'-bis trifluoromethyls -4,4 '"'"'-ammoniaBase-phenylate and 4,4 '"'"'-ammonia -2,2 '"'"'-methyl-1, one kind in 1 '"'"'-biphenyl;

    The alicyclic diamine monomer is selected from 1,3- diaminesIn butylcyclohexane, 4,4 '"'"'-two amido dicyclohexyl methyl hydrides,-two amido dicyclohexyl methyl hydride of 3,3 '"'"'-dimethyl -4,4 '"'"' at leastIt is a kind of;

    The aromatic dianhydride monomer is selected from 3,3 '"'"', 4,4 '"'"'-diphenyl ether tetracid dianhydrides, 2,3,3 '"'"', 4 '"'"'-diphenyl ether tetracids twoAcid anhydride, 3,3 '"'"', 4,4 '"'"'-bibenzene tetracarboxylic dianhydrides and 2,3,3 '"'"', one kind in 4 '"'"'-bibenzene tetracarboxylic dianhydrides;

    Described alicyclic twoAnhydride monomer is selected from 1,2,3,4- cyclobutane tetracarboxylic dianhydride, 1,2,3,4- pentamethylene tetracarboxylic dianhydride, 1,2,3,4- hexamethylenes fourCarboxylic acid dianhydride, bicyclic [2.2.1.] hexane -2,3,5,6- tetracarboxylic dianhydrides, bicyclic [2.2.1.] octane -2,3,5,6- tetrabasic carboxylic acidsDianhydride, bicyclic [2.2.1.] octyl- 7- alkene -2,3,5,6- tetracarboxylic dianhydrides, 2,3,5- tricarboxylic cyclopentyl acetic acid dianhydride, 3- carboxylic firstAt least one of cyclopentyl -1,2,4- tricarboxylic acid dianhydrides;

    The end-capping reagent in phthalic anhydride, phenylacetylene benzoic anhydride and 5 norbornene 2,3 dicarboxylic acid acid anhydride at least oneKind;

    The molecular weight of the polyimide compound is 102~105

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