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A kind of preparation method of carbon dioxide-based polyurea polymer material

A polymer material, carbon dioxide technology, applied in the direction of epoxy resin glue, adhesive type, adhesive, etc., can solve the problems of affecting polyurea reaction, low performance, moisture cannot be removed, etc., to achieve simple process and atom economy Good, wide range of effects

Active Publication Date: 2017-09-05
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As reported by Zhao Fengyu et al. (Phys.Chem.Chem.Phys., 2012, 14, 464-468), a method for preparing polyurea by a one-step method of diamine and carbon dioxide at 4-20 MPa, however, in this preparation method, due to diamine and Carbon dioxide reacts in a closed container, and the water produced by the side reaction of polyurea cannot be removed, which affects the further reaction of polyurea, resulting in low molecular weight and low performance of the prepared carbon dioxide-based polyurea, which limits the use of carbon dioxide-based polyurea. Application field
[0004] In the prior art, there is no report on the use of carbon dioxide base-terminated aminourea as a curing agent, or through chain extension with a chain extender and block copolymerization to obtain high-performance polymer materials

Method used

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  • A kind of preparation method of carbon dioxide-based polyurea polymer material
  • A kind of preparation method of carbon dioxide-based polyurea polymer material
  • A kind of preparation method of carbon dioxide-based polyurea polymer material

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preparation example Construction

[0055] The preparation process of melt polymerization: put amino-terminated polyurea oligomer and chain extender into the reaction device, mix uniformly at -10°C to 80°C, and react at -10°C to 80°C for 6s to 5h to obtain carbon dioxide-based polymer Urea polymer materials.

[0056] Solution preparation process: dissolve the amino-terminated polyurea oligomer in an organic solvent to obtain a mixed solution, then add the chain extender to the mixed solution, mix well, and react at -10°C to 80°C for 6s to 5h to obtain a carbon dioxide radical Polyurea polymer material.

[0057] In the above two methods, the ratio of the molar weight of the terminal amino group of the amino-terminated polyurea oligomer to the functional group of the chain extender is 1: (1 to 1.05), wherein the functional group of diglycidyl ether is an ether group, and the diacid chloride The functional group of the diacid is acid chloride, the functional group of the diacid anhydride is the acid anhydride, the...

Embodiment 1

[0076] The amino-terminated polyurea oligomer (prepared by the reaction of diethylenetriamine and carbon dioxide, n is 3, R represents NH-CH 2 -CH 2 -NH-CH 2 -CH 2 -NH) and epoxy resin E-51 were stirred and mixed evenly. After reacting at 80°C for 2 hours, the temperature was raised to 120°C for 3 hours to obtain a cured epoxy resin adhesive. Wherein, the viscosities of amino-terminated polyurea oligomer and epoxy resin E-51 are respectively 7.5Pa·s and 9.2Pa·s. The amount ratio is 1:0.4.

Embodiment 2

[0078] The amino-terminated polyurea oligomer (prepared by the reaction of diethylenetriamine and carbon dioxide, n is 3, R represents NH-CH 2 -CH 2 -NH-CH 2 -CH 2 -NH) and epoxy resin E-51 are stirred and mixed evenly, and silica filler is added. After stirring and mixing evenly, after reacting at 80°C for 2 hours, the temperature is raised to 120°C for 3 hours to obtain cured epoxy resin and dioxide Silicon composite. Wherein, the viscosities of amino-terminated polyurea oligomer and epoxy resin E-51 are respectively 6.3Pa·s and 8.9Pa·s; The molar ratio is 1:1, and the mass ratio of amino-terminated polyurea oligomer to silica filler is 10:0.05.

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Abstract

The invention discloses a method for preparing a carbon dioxide-based polyurea polymer material, which belongs to the technical field of polymer material preparation. The problem that the performance of the carbon dioxide-based polyurea cannot meet the requirements in the prior art is solved, and the application range of the carbon dioxide-based polyurea is widened. In the preparation method, polymerize amino-terminated polyurea oligomers with chain extenders, epoxy resins, alkyd resins, phenolic resins, urea-formaldehyde resins or other active end-group oligomers to obtain carbon dioxide-based polyurea polymer materials; The structural formula of the amino-terminated polyurea oligomer used is shown in formula I. The preparation method is environmentally friendly, pollution-free, simple in process, good in atom economy, and wide in application range. Polymer materials with different properties can be prepared by further reacting amino-terminated polyurea oligomers with different chemical structures with different substrates. , for a variety of purposes.

Description

technical field [0001] The invention relates to a method for preparing a carbon dioxide-based polyurea polymer material, and belongs to the technical field of polymer material preparation. Background technique [0002] Carbon dioxide-based polyurea, which has good mechanical properties, thermal reactivity and chemical resistance, has been extensively studied in recent years. [0003] In the prior art, the preparation method of carbon dioxide-based polyurea mainly uses organic amine and carbon dioxide as raw materials for direct preparation. As reported by Zhao Fengyu et al. (Phys.Chem.Chem.Phys., 2012, 14, 464-468), a method for preparing polyurea by a one-step method of diamine and carbon dioxide at 4-20 MPa, however, in this preparation method, due to diamine and Carbon dioxide reacts in a closed container, and the water produced by the side reaction of polyurea cannot be removed, which affects the further reaction of polyurea, resulting in low molecular weight and low pe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G59/50C09J163/00C08L63/00C08K3/36C08K9/06C08K7/14C08K7/06C08K3/22C08G18/65C08G18/64C08G18/32C08G69/40C08G69/28C08L77/06C08L77/02
Inventor 应忠赵凤玉
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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