Preparation of ferrocenyl benzoxazine-containing monomer or precursor and heat reactive resin thereof

Abstract

The invention discloses a ferrocenyl benzoxazine-containing monomer or precursor and its preparation method as well as a ferrocenyl benzoxazine-containing resin prepared by thermal curing of the monomer or precursor. The preparation method provided by the invention comprises the following steps of: mixing and dissolving 1-400 wt% of reactants and organic solvents in a reactor while the temperature is controlled within 40-130 DEG C and the reaction lasts for 0.5-24 hours; washing a purification product by the use of an alkaline solution at the concentration of 0.01mol / L-5mol / L, washing the product to neutral by the use of pure water, removing the organic solvents, and drying to prepare the ferrocenyl benzoxazine-containing monomer or precursor. The ferrocenyl benzoxazine-containing resin is obtained by the heating, ring-opening and curing molding of the monomer or precursor. The monomer or precursor has low curing temperature, has a self-catalysis curing function, is widely applied, and can undergo crossing and curing under the heating condition without a catalyst and with no release of micromolecules. The cured ferrocenyl benzoxazine-containing resin has high temperature resistance and electromagnetic properties, and has an application prospect in the aspects of high temperature ceramics, electrochemical induction, high dielectric materials, magnetic ceramic body and the like.

Description

technical field

[0001] The present invention relates to a ferrocenyl-containing benzoxazine monomer or precursor and a method for preparing the monomer or precursor, and a ferrocenyl-containing benzoxazine formed by thermal curing of the monomer or precursor. resin. Background technique

[0002] Traditional phenolic resins are widely used because of their excellent temperature resistance, flame retardancy, mechanical strength, corrosion resistance and electrical insulation. As a new type of phenolic resin, polybenzoxazine resin is usually synthesized from phenol, formaldehyde and primary amine compounds to obtain monomers or precursors, and then the monomers or precursors are obtained by ring-opening polymerization under heating conditions. . In addition to the general characteristics of traditional phenolic resins, polybenzoxazine also has characteristics that traditional phenolic resins do not have, such as molecular designability, no release of small molecules during cu...

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