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A kind of latent epoxy resin curing-foaming agent and preparation method thereof

A technology of epoxy resin curing and foaming agent, which is applied in the field of plastic additives, can solve the problems of difficult realization of foaming materials and single-component epoxy foaming systems, and achieves environmental protection of the synthesis process, increased carbon emissions, and utilization of raw materials. high rate effect

Active Publication Date: 2017-03-01
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] This new type of latent epoxy resin curing-foaming agent solves the problem of inconvenient mixing of carbon dioxide gas into the foaming material and the difficulty of realizing the one-component epoxy foaming system at the same time from the perspective of molecular design. It has not been seen at home and abroad. Related reports

Method used

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  • A kind of latent epoxy resin curing-foaming agent and preparation method thereof
  • A kind of latent epoxy resin curing-foaming agent and preparation method thereof
  • A kind of latent epoxy resin curing-foaming agent and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] 5 g of mantanediamine (MDA) was added to the reaction vessel, and then 560 mL (495 g) of ethyl acetate was added, and stirred to form a solution with a uniform concentration of 1%. The industrial-grade carbon dioxide gas was introduced into the reactor below the liquid level at 200 mL / min, and the reaction was carried out under stirring for 12 hours. A white precipitate was obtained at the bottom of the reactor. The product was filtered and dried at room temperature in vacuo for 12 hours to obtain 5.2 g of a white powdery product, marked as B-MDA, with the structural formula:

[0040]

Embodiment 2

[0042] 50 g of diethylaminopropylamine (DEAPA) was added to the reaction vessel without adding any solvent, i.e. the concentration of the reactant was 100%. The technical grade carbon dioxide gas was introduced into the reactor below the liquid level at 40 mL / min, and the reaction was carried out for 30 minutes under stirring to obtain 54 g of white paste, which was marked as B-DEAPA, and the structural formula was:

[0043]

Embodiment 3

[0045] 50 g of N-aminoethylpiperazine (AEP) was added to the reaction vessel, and then 570 mL (450 g) of acetone was added, and stirred to form a solution with a concentration of 10%. The industrial-grade carbon dioxide gas was introduced into the reactor below the liquid level at 60 mL / min, and the reaction was carried out under stirring for 10 hours. A white precipitate was obtained at the bottom of the reactor. The product was filtered and dried at room temperature for 12 hours to obtain 65 g of a white powdery product, marked as B-AEP, with the structural formula:

[0046]

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Abstract

The invention discloses a latent epoxy resin curing-foaming agent and a method for preparing the same and belongs to the technical field of plastic additives. A commercialized amine curing agent for epoxy resin is utilized to absorb and fix carbon dioxide, so as to synthesize a series of novel alkyl ammonium carbamate compounds or alkyl ammonium carbonate compounds. The alkyl ammonium carbamate compounds or the alkyl ammonium carbonate compounds are stable at normal temperature and can release carbon dioxide gas and the amine curing agent again when heated, so as to effectively foam and cure the epoxy resin, and the latent epoxy resin curing-foaming agent is environmentally friendly.

Description

technical field [0001] The invention discloses a novel latent epoxy resin curing-foaming agent and a preparation method thereof, belonging to the technical field of plastic auxiliary agents. Background technique [0002] Epoxy resin is one of the most important varieties of thermosetting polymer materials. It is widely used because of its good mechanical properties, high heat resistance, strong adhesion, good resistance to hydrolysis and chemical corrosion. Its foam materials are widely used in transportation, high-strength thermal and sound insulation materials, high-strength marine floating materials, wind power materials, foam potting glue and other fields. [0003] Foaming agent is the source of bubble generation in foamed plastics, and the amount is huge. The evaluation of blowing agents is generally based on the aspects of foaming efficiency, cost performance and impact on the environment and human health. The reason for the foaming of the blowing agent can be based ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G59/50C08J9/08C08J9/06C07C271/02C07C269/00C08L63/00
Inventor 任强朱世平
Owner CHANGZHOU UNIV
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