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Solvent-free winding cyanate ester resin system as well as preparation method and application thereof

A cyanate ester resin and solvent-free technology, which is applied in the field of cyanate resin, can solve the problems of poor paving property of prepreg, high crosslinking density, construction environment pollution, etc., achieve excellent comprehensive mechanical properties, simple preparation process, The effect of good mechanical properties

Active Publication Date: 2020-10-02
威海合纵新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Among the cyanate resins, bisphenol A type cyanate resin is more commonly used, but the triazine ring structure in the bisphenol A cyanate resin molecule is highly symmetrical, the crystallinity is high, and the brittleness of the cured resin is relatively large. Composite material prepregs have poor paving properties, and the crosslinking density after monomer polymerization is high. It is generally in a cured or semi-cured state at room temperature. Especially when it is used in a high-efficiency winding process, it needs to be diluted with a solvent such as acetone or methyl ethyl ketone. On the one hand, the existence of the solvent causes pollution to the construction environment, and on the other hand, it has a greater impact on the performance of the subsequent prepared composite materials.

Method used

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  • Solvent-free winding cyanate ester resin system as well as preparation method and application thereof
  • Solvent-free winding cyanate ester resin system as well as preparation method and application thereof
  • Solvent-free winding cyanate ester resin system as well as preparation method and application thereof

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preparation example Construction

[0066] According to the present invention, the preparation method of this cyanate resin system comprises the following steps:

[0067] Step 1, mixing the cyanate resin with a modifier to obtain a mixture;

[0068] Step 2, adding a catalyst to the mixture.

[0069] According to the present invention, in step 1, mixing the cyanate resin with the modifier includes: heating the cyanate resin, and then mixing with the modifier.

[0070] According to the present invention, in step 1, take cyanate ester and modifier according to the weight ratio of cyanate ester described in the first aspect of the present invention and modifier.

[0071] According to the present invention, the conditions for heating the cyanate resin are: the heating temperature is 50-80°C, preferably 60-70°C; the heating time is 20-80min, more preferably 30-60min.

[0072] In the present invention, heating the cyanate resin can convert the cyanate resin from solid or semi-solid to a viscous fluid state, thereby b...

Embodiment 1

[0099]Take 55g of bisphenol A cyanate resin with a degree of polymerization of 300, heat it at 60°C for 30 minutes, then stir and mix with 45g of bisphenol E cyanate, the stirring speed is 3000r / min, and the stirring time is 30min to obtain a mixture;

[0100] Add 3g zinc acetylacetonate three times in the mixture, stir evenly, interval 5min between every two times, stirring speed is 3000r / min, stirring time is 30min, obtains cyanate resin system, stores for subsequent use.

Embodiment 2

[0102] Take 55g of bisphenol A cyanate resin with a polymerization degree of 300, heat it at 70°C for 30min, then stir and mix it with 50g of bisphenol E cyanate, the stirring speed is 3200r / min, and the stirring time is 30min to obtain the mixture;

[0103] In the mixture, add 3g zinc acetylacetonate three times, stir evenly, interval 5min between every two times, stirring speed is 3500r / min, stirring time is 30min, obtains cyanate resin system, stores for subsequent use.

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Abstract

The invention discloses a solvent-free winding cyanate ester resin system as well as a preparation method and application thereof. The cyanate ester resin system is prepared from the following raw materials: cyanate ester resin, a modifier and a catalyst, wherein the cyanate ester resin is selected from one or more of bisphenol A type cyanate ester, dicyclopentadiene bisphenol type cyanate ester,bisphenol F type cyanate ester and bisphenol M type cyanate ester. In the preparation method, by mixing cyanate ester resin with a specific modifier, the solvent-free winding cyanate ester resin system can be directly used for a winding process, process steps are simplified, the solvent-free winding cyanate ester resin system can be used for preparing a winding process composite material structural part, and the solvent-free winding cyanate ester resin system and a fiber reinforced material can be used for preparing a cyanate ester resin-based composite material with good heat-conducting property.

Description

technical field [0001] The invention belongs to the technical field of cyanate ester resins, in particular to a solvent-free winding cyanate resin system and its preparation method and application. Background technique [0002] Cyanate resin is a thermosetting resin with two or more cyanate functional groups in its molecular structure developed in the 1960s. The synthesis process is simple and the raw materials are cheap. It is important in the fields of electronic appliances and microwave communication technology. It can be used as the basic material of electronic materials and insulating materials; due to its good thermal stability, heat and humidity resistance, and extremely low coefficient of linear expansion, cyanate ester resin has become a high-frequency, high-performance, high-quality electronic printed circuit It is an excellent base material for boards; it is also a good chip packaging material, and it also has great application prospects in the aerospace field. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/06C08K3/04C08L79/04C08K7/06C08J5/04B29C70/34
CPCC08G73/065C08K3/041C08J5/042B29C70/34C08K2201/011C08J2379/04C08K7/06
Inventor 刘清田
Owner 威海合纵新材料科技有限公司
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