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Method for preparing porous materials and chemicals from anhydride cured epoxy resin

A technology for curing epoxy resins and porous materials, applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc. Inexpensive and high value-added products

Pending Publication Date: 2022-05-24
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems of the depolymerization of anhydride-cured epoxy resin and the preparation of functional materials, the solvent is volatile, difficult to recycle, and the resin needs to be pretreated. A method for preparing porous materials and chemicals from an anhydride-cured epoxy resin with a simple degradation method and no need for additional catalysts

Method used

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  • Method for preparing porous materials and chemicals from anhydride cured epoxy resin
  • Method for preparing porous materials and chemicals from anhydride cured epoxy resin
  • Method for preparing porous materials and chemicals from anhydride cured epoxy resin

Examples

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Embodiment 1

[0027] The oxalic acid and choline chloride with a mass ratio of 4:1 are heated and stirred to form a binary solvent system, and 1 g of acid anhydride is cured with epoxy resin (such as figure 2 shown), 4g oxalic acid-choline chloride solvent was mixed and reacted at 180 ° C for 12h, after the reaction, the solid in the system was separated and washed and dried to obtain a porous material (such as figure 1 shown), the oxalic acid-choline chloride solvent in the system can be used for the next reaction.

Embodiment 2

[0029] Urea and choline chloride with a molar ratio of 2:1 were heated and stirred to form a binary solvent system. 1 g of carbon fiber reinforced acid anhydride cured epoxy resin and 2 g of urea-choline chloride solvent were mixed and reacted at 230 ° C for 10 h, and then taken out after the reaction. Carbon fibers in the system (such as image 3 shown), then add water to the system until there is material precipitation, separate the precipitation components to obtain high value-added aromatic glycerol ether compounds, dry the water in the solvent, and continue to be used in the next degradation reaction.

Embodiment 3

[0031] Trifluoromethanesulfonic acid and tetrabutylphosphine bromide with a molar ratio of 1:1 were heated and stirred to form a binary solvent system, and 1 g of glass fiber reinforced acid anhydride cured epoxy resin, 10 g of trifluoromethanesulfonic acid-tetrabutyl bromide The phosphine solvent was mixed and heated at 40°C for 30s by microwave. After the reaction, the glass fibers in the system were taken out, and water was added to the system until substances were precipitated. Moisture drying can continue to be used in the next degradation reaction.

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Abstract

The invention discloses a method for preparing a porous material and a chemical from anhydride cured epoxy resin, and belongs to the technical field of degradation and recovery of thermosetting resin. The invention mainly solves the problems that the solvent is easy to volatilize and difficult to recover, the resin needs to be pretreated and the like in the current anhydride cured epoxy resin depolymerization and functional material preparation process. According to the preparation method, a binary or ternary solvent system and anhydride cured epoxy resin are mixed, and the epoxy resin porous materials or aromatic glyceryl ether compounds with different morphologies are obtained by adjusting the solvent composition, temperature and time and controlling the reaction proceeding degree. The method has the advantages of simplicity and convenience in solvent preparation, low cost, low toxicity, good solubility, high degradation activity and no need of additional addition of a catalyst.

Description

technical field [0001] The invention belongs to the technical field of degradation and recovery of thermosetting resins, and in particular relates to a method for preparing porous materials and chemicals by curing epoxy resins with acid anhydrides. Background technique [0002] Acid anhydride cured epoxy resin is a thermosetting resin with a special three-dimensional network structure formed by the reaction of a resin containing epoxy active groups with an acid anhydride curing agent, and cured and cross-linked through ester bonds. It is widely used in wind power energy, aerospace, Transportation, sports equipment, bridge construction and other fields. Acid anhydride-cured epoxy resins are difficult to degrade in nature, so a large amount of scraps and wastes generated in industrial production and life cannot be properly handled, resulting in serious environmental pollution and resource waste. At present, the chemical recovery methods of acid anhydride cured epoxy resin mai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/00C08J11/10C08J11/26C08J11/28C08J11/00C08L63/00C07C41/26C07C43/23
CPCC08J9/00C08J11/10C08J11/26C08J11/28C08J11/00C07C41/26C08J2363/00C07C43/23Y02W30/62
Inventor 邓天昇张宁侯相林王驰洲王伟杰
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI