Model compound for stimulating structure containing carbon-oxygen bond and carbon-nitrogen bond of amine curing agent/bisphenol A epoxy cross-linked network and preparation method thereof
A technology of amine curing agent and model compound, which is applied in the preparation of organic compounds, preparation of amino hydroxyl compounds, chemical instruments and methods, etc. It can solve the problems of complex decomposition rules of epoxy resin cured products and difficult to reveal.
Inactive Publication Date: 2012-06-13
HARBIN INST OF TECH
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Problems solved by technology
[0004] The present invention solves the technical problem that is difficult to reveal due to the complex decomposition law of cured epoxy resin; and provides a model compound containing carbon-oxygen bond and carbon-nitrogen bond structure that simulates the amine curing agent / bisphenol A epoxy crosslinking network and its preparation method
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specific Embodiment approach 1
[0010] Embodiment 1: In this embodiment, the structural formula of the model compound containing carbon-oxygen bond and carbon-nitrogen bond structure that simulates the amine curing agent / bisphenol A epoxy crosslinking network is:
[0011]
specific Embodiment approach 2
[0012] Specific embodiment two: the preparation method of the model compound containing carbon-oxygen bond and carbon-nitrogen bond structure of simulating amine curing agent / bisphenol A epoxy crosslinking network in this embodiment is accomplished through the following steps: N, Put N'-dimethylethylenediamine (NND) into a reactor with a condensing device, heat while magnetically stirring, and feed nitrogen into the reactor, when N, N'-dimethylethylenediamine refluxes (119°C), add phenylglycidyl ether (GPE) dropwise into the reactor at a rate of 6-10 seconds / drop for 1 hour, and then continue the reflux reaction for 1 hour; A model compound containing carbon-oxygen bond and carbon-nitrogen bond structure of agent / bisphenol A epoxy cross-linked network.
[0013] The structural formula of the present embodiment product is as follows:
[0014]
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The invention provides a model compound for stimulating a structure containing a carbon-oxygen bond and a carbon-nitrogen bond of an amine curing agent / bisphenol A epoxy cross-linked network and a preparation method thereof, relates to a model compound of the amine curing agent / bisphenol A epoxy cross-linked network and a preparation method thereof, and is used for solving the technical problems that the epoxy resin cured product is complicated in decomposition and the decomposition rule is hard to disclose. The structural formula of the model compound is shown in the specification; and the preparation method of the model compound comprises the steps of: adding N,N'-dimethyl ethylene diamine to a reactor with a condensing device, heating while magnetically stirring, simultaneously introducing nitrogen to the reactor, dropwise adding phenyl glycidyl ether to the reactor when N,N'-dimethyl ethylene diamine refluxes, and then keeping reaction under reflux. The synthesized model compound is decomposed in subcritical water at different temperatures for different time, the bond breaking manner of the model compound is analyzed through representing the kind and relative content of the decomposition products, and the decomposition reaction mechanism of the epoxy resin in subcritical water is further discussed.
Description
technical field [0001] The invention relates to a model compound of an amine curing agent / bisphenol A epoxy crosslinking network and a preparation method thereof. Background technique [0002] Because epoxy resin has a cross-linked structure, it is difficult to decompose, and its inability to melt, dissolve, and be decomposed by microorganisms makes waste treatment very difficult, and it cannot be recycled by the usual thermoplastic recycling methods. In addition, the separation technology of the matrix and fibers in epoxy composite materials is also a difficult problem to solve, and the fiber-reinforced materials (such as carbon fibers) in composite materials are of great value for recycling. Finding an effective decomposition method of thermosetting epoxy resin has become the focus of attention. [0003] In the early stage, we have successfully realized the decomposition of thermosetting epoxy resin in near-critical water, and have a preliminary understanding of the react...
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IPC IPC(8): C07C217/30C07C213/04
Inventor 刘宇艳韦会鸽吴松全蒋丽琴
Owner HARBIN INST OF TECH