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Preparation method of carbon-dioxide-base polyurea high polymer material

A polymer material, carbon dioxide technology, used in epoxy resin adhesives, adhesive types, adhesives, etc., can solve problems such as low performance, affecting polyurea reaction, and inability to remove moisture, achieving a wide range of applications and atomic economy. The effect of good performance and simple process

Active Publication Date: 2015-05-27
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • 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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  • Preparation method of carbon-dioxide-base polyurea high 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 preparation method of a carbon-dioxide-base polyurea high polymer material, belonging to the technical field of preparation of high polymer materials. The method solves the problem that the carbon-dioxide-base polyurea in the prior art can not satisfy the requirements, and widens the application range of the carbon-dioxide-base polyurea. The preparation method comprises the following step: polymerizing amino-terminated polyurea oligomer with a chain extender, an epoxy resin, an alkyd resin, a phenol formaldehyde resin, a urea-formaldehyde resin or other active-terminated oligomers to obtain the carbon-dioxide-base polyurea high polymer material. The structural formula of the amino-terminated polyurea oligomer is disclosed as Formula I. The preparation method is green and environment-friendly, has the advantages of no pollution, simple technique, favorable atomic economical efficiency and wide application range, can prepare high polymer materials with various properties through further reaction between amino-terminated polyurea oligomers with different structures and different substrates, and is suitable for multiple 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 Applications(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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