Low-viscosity cardanol solidifying agent of epoxy resin and preparation method thereof

A cardanol epoxy resin, low-viscosity technology, applied in the field of chemistry, can solve the problems of low performance, unenvironmental curing agent, poor mechanical properties, etc., and achieves the effects of wide ratio range, improved curing agent performance, and excellent toughness.

Inactive Publication Date: 2008-12-10
上海美东生物材料股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The object of the present invention is to provide a kind of low-viscosity cardanol epoxy resin curing agent and preparation method thereof, described this low-viscosity cardanol epoxy resin curing agent will solve the problem that the curing agent in the prior art is not environmentally friendly and has poor performance Technical problems of low and poor mechanical properties

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  • Low-viscosity cardanol solidifying agent of epoxy resin and preparation method thereof
  • Low-viscosity cardanol solidifying agent of epoxy resin and preparation method thereof
  • Low-viscosity cardanol solidifying agent of epoxy resin and preparation method thereof

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Embodiment Construction

[0016] A kind of low-viscosity cardanol epoxy resin curing agent of the present invention has following structural formula:

[0017]

[0018] Among them, R stands for C 15 h 31 , n(8-120).

[0019] The present invention also provides the preparation method of above-mentioned a kind of low-viscosity cardanol epoxy resin curing agent, described low-viscosity cardanol epoxy resin curing agent is formed by the reaction of cardanol, p-m-xylylenediamine and paraformaldehyde Prepared, the equation of reaction is as follows:

[0020]

[0021] Wherein, the percentage by weight of cardanol, p-m-xylylenediamine and paraformaldehyde is 63.83%~91.69%: 7.33%~31.91%: 0.98%~4.26%. During the reaction, cardanol, p-m-xylylenediamine Add in the reactor, then add paraformaldehyde to react, and discharge just obtain described low-viscosity cardanol epoxy resin curing agent.

[0022] Further, in the added material, the purity of the cardanol is greater than or equal to 60%.

[0023] Furt...

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Abstract

The invention relates to a low-viscosity cardanol epoxy resin curing agent which has a structural formula shown on the right. The method for preparing the low-viscosity cardanol epoxy resin curing agent utilizes reaction of cardanol, p / m-benzene dimethylamine and paraformaldehyde to prepare the low-viscosity cardanol epoxy resin curing agent. The low-viscosity cardanol epoxy resin curing agent has no solvent, has no irritation, is nontoxic and environment-friendly, is mild in heat release, low in color, low in viscosity, and moderate in curing speed, can be cured at a low temperature, and simultaneously has superior anti-corrosive and protective properties; and cured products have superior toughness, good strength, superior adhesion and invasive ability on substrates, and superior low surface construction performance, and are normally used on wet and rusty surfaces.

Description

Technical field: [0001] The invention relates to the field of chemistry, in particular to organic macromolecular compounds, in particular to a low-viscosity cardanol epoxy resin curing agent and a preparation method thereof. Background technique: [0002] Curing agent is an indispensable and important component in the application field of epoxy resin, and it can determine the physical properties of cured products just like epoxy resin. Commonly used curing agents include aliphatic amines, alicyclic amines, aromatic amines, acid anhydrides, polyamides, etc. The reaction mechanism between the curing agent and the epoxy resin is that the active hydrogen contained in the curing agent opens the epoxy group and makes the epoxy resin exchange. Joint curing. However, commonly used curing agents have problems in terms of environmental protection, usability, and mechanical properties. For example, amine curing agents are highly volatile, highly toxic, and harmful to human bodies. Mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/62
Inventor 黎明
Owner 上海美东生物材料股份有限公司
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