Coordination and anion synergistically catalyzed curing cyanate resin system and preparation method thereof

Abstract

The invention provides a coordination and anion cooperative catalytic cured cyanate resin system and a preparation method thereof, and belongs to the field of high-performance composite resin materials. A specific technology comprises the following steps mixing cyanate resin and tertiary amine epoxy curing agents (AG-80 and AG-90) according to a certain ratio and carrying out co-curing; adding a novel efficient compound catalyst into a mixed resin system and carrying out gradient curing; firstly, curing at the temperature ranging from 70 DEG C to 110 DEG C for 2h to 4h; secondly, curing at thetemperature ranging from 110 DEG C to 140 DEG C for 3h to 5h; finally, curing at the temperature of 155 DEG C for 4h to 6h to obtain completely cured cyanate resin. The coordination and anion cooperative catalytic cured cyanate resin system and the preparation method thereof have the advantages that the curing temperature of the prepared cyanate resin is remarkably reduced, and the highest curingtemperature does not exceed 155 DEG C and is much lower than the curing temperature of 280 DEG C of multi-functional-group cyanate resin in the prior art; a low-temperature curing technology of the cyanate resin is reliable, and the novel efficient compound catalyst is used for catalyzing curing reaction, so that the reaction is uniform; the low-temperature curing technology of the cyanate resinis simple to operate and stable in technology and is suitable for industrial production.

Description

technical field [0001] The invention belongs to the field of high-performance composite resin materials, and specifically relates to a coordination and anion synergistic catalytic curing cyanate resin system and a preparation method thereof. Background technique [0002] Cyanate resin is a kind of high-performance resin developed around the 1980s. Its molecular structure contains two or more cyanate functional groups. Its unique molecular structure endows cyanate resin with special properties. Reactivity makes the cured product of cyanate resin have a series of excellent properties, such as the triazine ring structure formed by the self-polymerization of cyanate resin, which makes the cured product have excellent heat resistance and good mechanical properties. It is developed in recent years. A new generation of resin matrix for high-performance composite materials. [0003] Under the combined action of heating conditions and catalysts, the cyanate functional groups in the ...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of high curing temperature of cyanate resin in the prior art, to provide a coordination and anion synergistically catalyzed curing cyanate resin system and its preparation method, the method makes the reaction by using a catalyst The activation energy is reduced, and then the curing reaction can still maintain the excellent heat resistance of cyanate resin under the condition of medium and low temperature curing

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