Cyanate resin composition and method of producing the same

A technology of cyanate ester resin and composition, applied in the field of cyanate ester resin composition and preparation thereof, can solve the problems of no production of bisphenol M-type resin, high void ratio of molded products, and high cost.

Active Publication Date: 2009-04-08
北京玻钢院复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the resin matrix suitable for the submarine radome material is most suitable for the cyanate ester resin with three structures of dicyclopentadiene bisphenol type, tetramethyl bisphenol F type and bisphenol M type, because the water absorption of these three resins The rate is the lowest, and the electrical performance is the best, but bisphenol M-type resin is not produced in China at present, and it is very expensive
Although the electrical properties of bisphenol E resin are not as good as those of other structural resins, bisphenol E resin is the only cyanate resin that is liquid at room temperature, and the price is naturally relatively expensive.
Dicyclopentadiene bisphenol-type cyanate resin is an oligomer diluted with an inert solvent butanone, which can be applied to the winding molding process, but the void ratio of the molded product is relatively high

Method used

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  • Cyanate resin composition and method of producing the same
  • Cyanate resin composition and method of producing the same
  • Cyanate resin composition and method of producing the same

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0118] Preparation example 1, the preparation of modified cyanate ester resin

[0119] Add tetramethylbisphenol F-type cyanate into a four-necked bottle, carry out prepolymerization in an oil bath heating environment (specifically, the temperature is 200°C-220°C), and control the end point of prepolymerization with an Abbe refractometer; When the refractive index is 1.576-1.582, add the same amount of modifier into the four-necked bottle and stir evenly to obtain the modified cyanate resin. Pour the mixed resin into a container to cool and set aside.

[0120] Sample example 1, sample preparation

[0121] Lay the quartz cloth in the mold, close the mold, preheat the mold and the modified cyanate ester resin obtained in Preparation Example 1, and then vacuum RTM infusion molding, cool naturally to room temperature after curing, and demould to obtain the product and sample.

[0122] Performance testing and data processing:

[0123] Determination of viscosity-temperature curve ...

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Abstract

The invention discloses a cyanic acid ester resin composition and a preparation method thereof. The cyanic acid ester resin composition provided by the invention comprises a modifier and a tetramethyl bisphenol F-typed cyanic acid ester preformed polymer, wherein, the modifier comprises bisphenol E-typed cyanic acid ester. The electrical property and the heat resistance property of modified cyanic acid ester resin composition are very superior and the modified cyanic acid ester resin composition is liquid at normal temperature, thus being capable of being applied to winding or RTM forming technology and having excellent manufacturability.

Description

technical field [0001] The invention relates to a cyanate resin composition, a preparation method thereof, and products made from the cyanate resin composition. Background technique [0002] Resin acts as a binder in composite materials and is the basic component that determines the heat resistance of composite materials. Traditional resin matrices such as unsaturated polyester resin, epoxy resin, phenolic resin and other thermosetting resins are still widely used in various radomes. In addition, new high-temperature resistant resins such as silicone resin polyimide (PI) are gradually Started to use. Thermoplastic resins have emerged in the preparation of radomes in recent years, the most notable of which is the non-carbonized ablative material polytetrafluoroethylene PTFE developed in the United States. [0003] After entering the 1980s, cyanate resin was gradually applied in radome. Its main features are: low dielectric coefficient (2.8 ~ 3.2), extremely small dielectri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/06
Inventor 柴朋军王嵘郝春功李安猛高红为马玉敬孔凡英张伟
Owner 北京玻钢院复合材料有限公司
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