Bismaleimide resin hollow polymer microsphere, preparation method thereof and method for modifying cyanate ester resin

A technology of maleimide resin and bismaleimide, which is used in the field of high-performance substrates and base materials for radar shields, can solve the problem that CE resin dielectric constant and dielectric loss cannot be effectively reduced, laboratory environment High requirements, complex process flow, etc., to achieve the effect of reducing density and dielectric constant, high reactivity, and simple and easy method

Pending Publication Date: 2022-07-29
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bismaleimide resin solid spheres obtained in this method have almost no internal porosity, and the voids cannot be introduced when modifying CE resins, and the solid spheres have a high density. These two factors lead to solid bismaleimide resins. Microspheres cannot effectively reduce the dielectric constant and dielectric loss of CE resin
The patent application number 201810586504.4 applied for a "preparation method of polystyrene hollow microspheres with high surface finish", which obtained polystyrene hollow microspheres, but the hollow microspheres were non-crosslinked polymer microspheres , and this method uses microfluidic technology, which has the disadvantages of high requirements on the laboratory environment and complicated process flow.

Method used

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  • Bismaleimide resin hollow polymer microsphere, preparation method thereof and method for modifying cyanate ester resin
  • Bismaleimide resin hollow polymer microsphere, preparation method thereof and method for modifying cyanate ester resin
  • Bismaleimide resin hollow polymer microsphere, preparation method thereof and method for modifying cyanate ester resin

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Experimental program
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Effect test

Embodiment 1

[0044] First, select 30 mL of isoamyl acetate and 10 mL of n-heptane as a mixed solvent and add it to the flask, add 0.596 g of styrene-maleic anhydride polymer microspheres (with a particle size of 600 nm) as a template under stirring conditions, and stir the solution to The polymer microspheres are uniformly dispersed; then add shell monomer 2,2'-bis-4-[(4-maleimidophenoxy)phenyl]propane 0.342g and DVB-55 0.254g and initiator Azobisisobutyronitrile 0.018g, stir until the monomer and the initiator are completely dissolved, and the core-shell mass ratio is 1:1; relative to the total mass of the reaction system, the total monomer mass percentage concentration in the reaction system is 1.5% by mass , the dosage of the initiator is 3% by mass of the total mass of the shell monomers. Secondly, after the reaction system was deoxygenated by nitrogen for 10 minutes, it was placed in an oil bath at 75° C. to react for 6 hours. After the reaction, a solid-liquid dispersion system of bi...

Embodiment 2

[0046] First, select 30 mL of ethyl acetate and 10 mL of n-hexane as a mixed solvent to add to the flask, add 0.596 g of styrene-itaconic anhydride polymer microspheres (with a particle size of 600 nm) as a template under stirring conditions, and stir the solution until the polymer The microspheres are uniformly dispersed; then add shell monomer 2,2'-bis-4-[(4-maleimidophenoxy)phenyl]propane 0.342g and DVB-55 0.254g and azodiiso Nitrile initiator 0.018g, stir until the monomer and the initiator are completely dissolved, and the core-shell mass ratio is 1:1; relative to the total mass of the reaction system, the total monomer mass percentage concentration in the reaction system is 1.5% by mass. The dosage of the agent is 3% by mass of the total mass of the shell monomers. Secondly, after the reaction system was deoxygenated by nitrogen for 10 minutes, it was placed in an oil bath at 75° C. to react for 6 hours. After the reaction, a solid-liquid dispersion system of bismaleimid...

Embodiment 3

[0048] First, select 30mL of ethyl benzoate and 10mL of n-heptane as a mixed solvent to add to the flask, add 0.596g of styrene-maleimide polymer microspheres (particle size is 600nm) under stirring conditions as a template, stir Solution to polymer microspheres uniformly dispersed; then add shell monomer 2,2'-bis-4-[(4-maleimidophenoxy)phenyl]propane 0.342g and DVB-55 0.254g and The initiator azobisisobutyronitrile 0.018g, stir until the monomer and the initiator are completely dissolved, and the core-shell mass ratio is 1:1; relative to the total mass of the reaction system, the total monomer mass percentage concentration in the reaction system is 1.5 mass %, and the amount of initiator used is 3 mass % of the total mass of shell monomers. Secondly, after the reaction system was deoxygenated by nitrogen for 10 minutes, it was placed in an oil bath at 75° C. to react for 6 hours. After the reaction, a solid-liquid dispersion system of bismaleimide resin core-shell polymer mic...

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Abstract

The invention relates to a bismaleimide resin hollow polymer microsphere, a preparation method thereof and a method for modifying cyanate ester resin. The bismaleimide resin hollow polymer microsphere with a shell layer containing a high-activity dangling double bond group and a maleimide group is prepared by adopting a template method and a precipitation polymerization mode, and the active group can chemically react with cyanate ester resin at a relatively low curing temperature; as a heat-resistant modifier, the microspheres can effectively enhance the mechanical properties of modified resin, and meanwhile, by utilizing the unique hollow structure and excellent dielectric properties of the microspheres, the dielectric loss and dielectric constant of a cyanate resin matrix can be effectively reduced, so that the requirements in the application fields of large-scale integrated circuits, radar antennas, 5G communication and the like are expected to be met.

Description

technical field [0001] The invention belongs to the technical field of high-performance substrates and base materials for radar shields, and relates to a bismaleimide resin hollow polymer microsphere and a preparation method thereof and a method for modifying a cyanate ester resin. Background technique [0002] With the rapid development of communication and information technology, especially the arrival of the 5G communication era, the speed of signal propagation is further required to be faster to reduce the delay and distortion of signals during high-speed transmission. Electronic products are moving towards high frequency, functionalization and Development in the direction of high performance. Cyanate ester (CE) resin has excellent dielectric properties, mechanical properties, heat resistance and low hygroscopicity, and is widely used in aerospace and microelectronics industries, especially high-frequency high-speed circuit boards and radomes Wait. However, in order to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/14C08G73/06
CPCB01J13/14C08G73/065
Inventor 杨万泰蒋汶杏陈冬马育红
Owner BEIJING UNIV OF CHEM TECH
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