Latent epoxy resin curing-foaming agent and method for preparing the same

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 material and single-component epoxy foaming system, and achieve environmental protection of synthesis process, increase of carbon emissions, and utilization of raw materials high rate effect

Active Publication Date: 2015-09-30
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 difficul

Method used

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  • Latent epoxy resin curing-foaming agent and method for preparing the same
  • Latent epoxy resin curing-foaming agent and method for preparing the same
  • Latent epoxy resin curing-foaming agent and method for preparing the same

Examples

Experimental program
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Effect test

Embodiment 1

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

[0040]

Embodiment 2

[0042] 50 g of diethylaminopropylamine (DEAPA) was added into the reaction vessel, and no solvent was added, that is, the concentration was 100% of the reactant. Pass industrial grade carbon dioxide gas into the reactor below the liquid level at 40mL / min, and react for 30 minutes under stirring to obtain 54g of white paste, marked as B-DEAPA, with the structural formula:

[0043]

Embodiment 3

[0045] Add 50g of N-aminoethylpiperazine (AEP) into the reaction vessel, and then add 570mL (450g) of acetone, and stir to form a solution with a concentration of 10%. Pass industrial grade carbon dioxide gas into the reactor below the liquid level at 60mL / min, and react for 10 hours under stirring. 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 a structural formula of:

[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 additives. 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 vehicles, high-strength heat and sound insulation materials, high-strength marine floating materials, wind power materials, foam potting glue and other fields. [0003] Blowing agent is the source of air bubbles in foamed plastics and is used in a huge amount. The evaluation of foaming agents is generally based on foaming efficiency, cost performance and impact on the environment and personnel health. The reason for the foaming of a blowing agent can be based on either a chemical or a phys...

Claims

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Application Information

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