Water-phase decomposition method for thermosetting epoxy resin or composite material thereof

An epoxy resin and composite material technology, which is applied in the field of decomposing epoxy resin or its composite material, can solve the problems of high energy consumption, low recycling rate, environmental pollution, etc., and achieves high decomposition efficiency, simple equipment, and no toxic and side effects. Effect

Inactive Publication Date: 2008-03-26
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of large energy consumption, serious environmental pollution, low reutilization rate and the need to use special organic decomposition liquid to decompose in the current treatment method of thermosetting epoxy resin or its composite materials, and provides a Decomposition of Thermosetting Epoxy Resin and Its Composite Materials by Aqueous Phase Method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0009] Specific embodiment one: the present embodiment thermosetting epoxy resin or its composite material is decomposed according to the following steps: one, add thermosetting epoxy resin or its composite material and water to the reactor at a feed ratio of 1g: 5mL; After sealing, put it into an environment with a pressure of 4-6MPa and a temperature of 260°C-380°C and heat it for 30-90min to decompose the thermosetting epoxy resin or its composite material.

[0010] In this embodiment, the decomposition rate of the thermosetting epoxy resin or its composite material is 52% to 100%. After the composite material is decomposed, the solid phase precipitates in the decomposition solution to form reinforcing fibers, which can be reused after cleaning and drying.

specific Embodiment approach 2

[0011] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the thermosetting epoxy resin is glycidyl ether type epoxy resin, glycidyl amine type epoxy resin, alicyclic glycidyl ester type epoxy resin or grease Synthesized by ring epoxy resin and amine curing agent, acid anhydride curing agent or imidazole curing agent. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0012] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the thermosetting epoxy resin composite material is a fiber-reinforced material or a filler composite material. Other steps and parameters are the same as those in Embodiment 1.

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Abstract

The present invention is process of decomposing thermosetting epoxy resin and other composite material. The decomposing process includes the following steps: 1. feeding thermosetting epoxy resin or other composite material and water into reaction kettle; and 2. heating to compose the thermosetting epoxy resin or other composite material. The process has thermosetting epoxy resin or other composite material decomposing rate of 52-100 %, and the decomposed product may be reused as chemical material. After composite material is decomposed, the reinforcing fiber as the precipitate may be cleaned and stoved for reuse. The technological process of the present invention is simple, low in cost, high in composing rate, low in power consumption and environment friendly.

Description

technical field [0001] The invention relates to a method for decomposing epoxy resin or its composite material. Background technique [0002] As an important industrial material, thermosetting epoxy resin or its composite material has the properties of adhesion, corrosion resistance, formability and thermal stability, and has superior performance in terms of mechanical, thermal, electrical and chemical resistance, and its light weight , Wide range of sources of materials, easy processing and molding, high production efficiency, and materials can be designed. It can be used as coatings, adhesives and molding materials, and has been widely used in the fields of electrical, electronic, optical machinery, engineering technology, aerospace, civil engineering and stationery manufacturing. In recent years, the consumption of epoxy resin in my country has grown rapidly. According to the estimation of China Epoxy Resin Industry Association, the apparent consumption of epoxy resin in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08J5/04
Inventor 刘宇艳李犁孟令辉黄玉东
Owner HARBIN INST OF TECH
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