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A kind of bisphenol A type cyanate resin prepolymer and preparation method thereof

A type of cyanate ester and prepolymer technology, which is applied in the field of cyanate ester resin, can solve the problems of increasing the stability and storage time of prepolymers, so as to improve the polymerization curing efficiency, increase toughness and heat resistance and flame retardancy, The effect of increasing the curing reaction rate

Active Publication Date: 2021-06-04
YANGZHOU TECHIA MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, on the basis of improving the polymerization and curing efficiency of bisphenol A cyanate ester monomers, the toughness, heat resistance and flame retardancy, and hygroscopicity still need to be improved to further increase the stability and storage time of the prepolymer.

Method used

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  • A kind of bisphenol A type cyanate resin prepolymer and preparation method thereof
  • A kind of bisphenol A type cyanate resin prepolymer and preparation method thereof
  • A kind of bisphenol A type cyanate resin prepolymer and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] A kind of bisphenol A type cyanate resin prepolymer of this embodiment, is made of bisphenol A type cyanate monomer, polymerization compatible catalyst, compound hygroscopic agent through insulation and stirring reaction, when the refractive index reaches 1.586, cooling , post-processing to get;

[0030] The synthesis reaction formula of polymerization compatible catalyst is as follows:

[0031]

[0032] The composite hygroscopic agent is obtained by polymerization reaction of diatomite, anhydrous magnesium sulfate and superabsorbent acrylic resin under the action of a crosslinking agent and an initiator.

[0033] The preparation method of polymerization compatible catalyst is as follows:

[0034] S1. Add 930g (6.2mol) of 4-hydroxy-1,3-benzenedicarbaldehyde, 16740g of tetrahydrofuran as a solvent, and 647.62g (6.4mol) of triethylamine into the reactor, heat up to 70°C, and stir at 460rpm. 346.74 g (1 mol) of hexachlorocyclotriphosphazene was added dropwise, and after...

Embodiment 2

[0041] A kind of bisphenol A type cyanate resin prepolymer of this embodiment is made of bisphenol A type cyanate monomer, polymerization compatibilization catalyst, compound hygroscopic agent through thermal insulation and stirring reaction, when the refractive index reaches 1.587, cooling , post-processing to get;

[0042] The synthesis reaction formula of polymerization compatible catalyst is as follows:

[0043]

[0044] The composite hygroscopic agent is obtained by polymerization reaction of diatomite, anhydrous magnesium sulfate and superabsorbent acrylic resin under the action of a crosslinking agent and an initiator.

[0045] The preparation method of polymerization compatible catalyst is as follows:

[0046] S1. Add 918g (6.12mol) of 4-hydroxy-1,3-benzenedicarbaldehyde, 17442g of tetrahydrofuran as a solvent, and 637.50g (6.3mol) of triethylamine into the reaction kettle, heat up to 69°C, and stir at 500rpm. 346.74 g (1 mol) of hexachlorocyclotriphosphazene was ...

Embodiment 3

[0053] A kind of bisphenol A type cyanate resin prepolymer of this embodiment is made of bisphenol A type cyanate ester monomer, polymerization compatibilization catalyst, compound hygroscopic agent through thermal insulation and stirring reaction, when the refractive index reaches 1.584, cooling , post-processing to get;

[0054] The synthesis reaction formula of polymerization compatible catalyst is as follows:

[0055]

[0056] The composite hygroscopic agent is obtained by polymerization reaction of diatomite, anhydrous magnesium sulfate and superabsorbent acrylic resin under the action of a crosslinking agent and an initiator.

[0057] The preparation method of polymerization compatible catalyst is as follows:

[0058] S1. Add 927g (6.18mol) of 4-hydroxy-1,3-phthalaldehyde, 12051g of tetrahydrofuran as a solvent, and 632.44g (6.25mol) of triethylamine into the reaction kettle, heat up to 69°C, and stir at 490rpm. 346.74 g (1 mol) of hexachlorocyclotriphosphazene was ...

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Abstract

The invention discloses a bisphenol A type cyanate resin prepolymer and a preparation method thereof. After heating and melting a bisphenol A type cyanate ester monomer, adding a prepared polymerization compatible catalyst and a composite hygroscopic agent, and heat preservation reaction , the reaction is terminated by monitoring the refractive index, and cooling is obtained by adding methyl ethyl ketone after cooling; compared with the traditional bisphenol A cyanate resin prepolymer, the ring structure of cyclotriphosphazene is similar to that of bisphenol A cyanate The compatibility of the monomer is good, and it can participate in the polymerization reaction of the bisphenol A cyanate ester monomer, which greatly improves the curing reaction rate. The rigid units of the phosphazene ring and the benzene ring greatly improve the toughness of the prepolymer without affecting Tensile strength and thermal properties, the core of cyclotriphosphazene can exert phosphorus-nitrogen synergistic flame retardant effect, the polymerization compatibility catalyst improves the polymerization and curing efficiency of bisphenol A cyanate ester monomer, increases the bisphenol A cyanide The toughness and heat resistance and flame retardancy of ester resin prepolymer.

Description

technical field [0001] The invention relates to the technical field of cyanate ester resins, in particular to a bisphenol A type cyanate resin prepolymer and a preparation method thereof. Background technique [0002] Cyanate resin is a new type of high-performance thermosetting resin. Its monomer contains two or more cyanate functional groups (-OCN). After curing, it forms a highly cross-linked triazine cyclized polymer. The outstanding performance features are excellent dielectric properties, with very low dielectric constant (ε=2.64-3.11) and dielectric loss value (tgδ=0.001-0.008) in a wide frequency range from X-band to W-band. In addition, it also has outstanding heat resistance, excellent mechanical properties, and low moisture absorption. Therefore, in cutting-edge fields including microelectronics, aviation, aerospace and other industries, it is especially important for dielectric properties, hygrothermal properties and mechanical properties. Cyanate ester resin is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/06C07F9/6593
CPCC07F9/65815C08G73/0644C08G73/065
Inventor 王跃彪朱芝峰吕嘉木邵家伟
Owner YANGZHOU TECHIA MATERIAL CO LTD
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