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Bisphenol A cyanate ester resin modified polysulfone composite material and preparation method thereof

A type of cyanate ester and composite material technology, which is applied in the field of polymers, can solve the problems of high-temperature dielectric performance stability and poor thermal expansion coefficient, and achieve low dielectric constant, low dielectric loss, and improved glass transition temperature. Effect

Active Publication Date: 2022-07-29
CHUANHUA GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, linear polysulfone is still relatively easy to generate polarization at high temperature and high frequency, and the stability and thermal expansion coefficient of high temperature dielectric properties are poor.

Method used

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  • Bisphenol A cyanate ester resin modified polysulfone composite material and preparation method thereof
  • Bisphenol A cyanate ester resin modified polysulfone composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] In step 1, 67.25g of bisphenol AF, 12.34g of allyl bisphenol A and 68.92g of 4,4-dichlorodiphenylsulfone were added to 297.42g of N-methylpyrrolidone in turn to obtain a transparent solution, and 46.07g of carbonic acid was added to the solution. Potassium and 74.36g of toluene were added to the solution in turn, and the dehydration reaction was carried out at a temperature of 160 °C for 2 hours in a three-necked flask equipped with a water separator and nitrogen gas, and then the temperature was raised to 185 °C, all the toluene was evaporated, and the reaction and polymerization were continued for 3 hours. , stop heating, cool down to 120 ℃, pour the product into cold water, stir to precipitate allyl fluorinated polysulfone solid material;

[0032] Step 2, pulverize the allyl fluorinated polysulfone solid material described in step 1, put it into a hydrochloric acid solution with a concentration of 0.84mol / L, let it stand for one day, and filter it with hot water at 90...

Embodiment 2

[0037] In step 1, 67.25g of bisphenol AF, 12.34g of allyl bisphenol A and 68.92g of 4,4-dichlorodiphenylsulfone were added to 297.42g of N-methylpyrrolidone in turn to obtain a transparent solution, and 46.07g of carbonic acid was added to the solution. Potassium and 74.36g of toluene were added to the solution in turn, and the dehydration reaction was carried out at a temperature of 160 °C for 2 hours in a three-necked flask equipped with a water separator and nitrogen gas, and then the temperature was raised to 185 °C, all the toluene was evaporated, and the reaction and polymerization were continued for 3 hours. , stop heating, cool down to 120 ℃, pour the product into cold water, stir to precipitate allyl fluorinated polysulfone solid material;

[0038] Step 2, pulverize the allyl fluorinated polysulfone solid material described in step 1, put it into a hydrochloric acid solution with a concentration of 0.84mol / L, let it stand for one day, and filter it with hot water at 90...

Embodiment 3

[0043]In step 1, 67.25g of bisphenol AF, 12.34g of allyl bisphenol A and 68.92g of 4,4-dichlorodiphenylsulfone were added to 297.42g of N-methylpyrrolidone in turn to obtain a transparent solution, and 46.07g of carbonic acid was added to the solution. Potassium and 74.36g of toluene were added to the solution in turn, and the dehydration reaction was carried out at a temperature of 160°C for 2h in a three-necked flask equipped with a water separator and nitrogen gas, and then the temperature was raised to 185°C, all the toluene was evaporated, and the reaction and polymerization were continued for 3h. , stop heating, cool down to 120 ℃, pour the product into cold water, stir to precipitate allyl fluorinated polysulfone solid material;

[0044] Step 2, pulverize the allyl fluorinated polysulfone solid material described in step 1, put it into a hydrochloric acid solution with a concentration of 0.84mol / L, let it stand for one day, filter it and wash it with hot water 12 times, ...

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Abstract

The invention belongs to the technical field of macromolecules, and particularly relates to a bisphenol A cyanate ester resin modified polysulfone composite material and a preparation method thereof. According to the invention, a structural unit containing fluorine atoms and allyl is introduced to the main chain of polysulfone, so that cross-linkable allyl fluorinated polysulfone with low dielectric constant is synthesized, and the dielectric constant of the polysulfone material is reduced while the glass-transition temperature is increased; secondly, high-performance low-dielectric cyanate ester resin is introduced, the cyanate ester resin and polysulfone are prepared into a glue solution, the glue solution is impregnated on glass fiber cloth, and the glass fiber cloth is cross-linked and cured at a high temperature in a hot pressing manner to form an interpenetrating network structure, so that the high-temperature dimensional stability of the composite material is improved, and the composite material has excellent mechanical properties. And the obtained composite material has good mechanical properties, low dielectric constant and low dielectric loss.

Description

technical field [0001] The invention belongs to the technical field of polymers, and in particular relates to a polysulfone composite material modified by a bisphenol A cyanate ester resin and a preparation method thereof. Background technique [0002] Materials with low dielectric constant and low dielectric loss are playing an increasingly important role in the microelectronics industry with VLSI as the core, involving communication equipment, automotive electronics, computers and related equipment, consumer electronics, industrial control, national defense and aerospace fields. However, traditional polymer materials have been unable to meet the requirements of current electronic industry development in terms of heat resistance, chemical resistance, dimensional stability, and long-term reliability. As a special engineering plastic, polysulfone (PSF) has excellent mechanical properties, flame retardancy, chemical resistance and processability, low dielectric constant and d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L81/06C08L79/04C08K7/14C08J5/24
CPCC08J5/24C08J2381/06C08J2479/04C08K7/14
Inventor 蒲泽军万和江谭又宁段焰熙钟家春
Owner CHUANHUA GRP
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