Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Phthalonitrile modified benzoxazine and epoxy resin composite material, preparation and application

A technology of phthalonitrile and epoxy resin, which is applied in the direction of organic chemistry, can solve the problems of insufficient thermal stability, high brittleness of cured products, high curing reaction temperature, etc., and achieve high yield, shortened synthesis cycle, and preparation method easy effect

Inactive Publication Date: 2016-01-20
国科广化(南雄)新材料研究院有限公司 +1
View PDF3 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it also has obvious disadvantages, such as high curing reaction temperature, high brittleness of cured products and insufficient thermal stability for use under many harsh conditions.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Phthalonitrile modified benzoxazine and epoxy resin composite material, preparation and application
  • Phthalonitrile modified benzoxazine and epoxy resin composite material, preparation and application
  • Phthalonitrile modified benzoxazine and epoxy resin composite material, preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Add 9.91g (0.05mol) of 4,4'-diaminodiphenylmethane, 6.00g (0.20mol) of paraformaldehyde and 250mL of chloroform into a 500mL flask equipped with a magnetic stirrer. The mixture was stirred under ice bath for 30 minutes, then 22.83 g (0.10 mol) of bisphenol A was added, and then the temperature was gradually raised to 60° C. for reflux and maintained for 12 hours. After the reaction dropped to room temperature, anhydrous sodium sulfate was added, dried for 12 hours and then filtered. The filtrate was evaporated to remove the solvent, and the residue was dissolved in 250 mL of dry DMF. After the dissolution was complete, 17.31 g (0.10 mol) of 4-nitrate was added in turn. Base phthalonitrile and 27.64g (0.20mol) of anhydrous potassium carbonate, add and stir at room temperature for 24 hours. After the reaction was completed, the reaction mixture was poured into a large amount of water to precipitate, and the precipitate was collected by filtration and washed with water and...

Embodiment 2

[0044]Add 9.91 g (0.05 mol) of 4,4'-diaminodiphenylmethane, 6.00 g (0.20 mol) of paraformaldehyde and 250 mL of dioxane into a 500 mL flask equipped with a magnetic stirrer. The mixture was stirred in an ice bath for 30 minutes, then 22.83 g (0.10 mol) of bisphenol A was added, and then the temperature was gradually raised to 100° C. for reflux and maintained for 8 hours. After the reaction dropped to room temperature, anhydrous sodium sulfate was added, dried for 12 hours and then filtered. The filtrate was evaporated to remove the solvent, and the residue was dissolved in 250 mL of dry DMF. After the dissolution was complete, 17.31 g (0.10 mol) of 4-nitrate was added in turn. Base phthalonitrile and 27.64g (0.20mol) of anhydrous potassium carbonate, after the addition was completed, the mixture was stirred and reacted at 60°C for 6 hours. After the reaction was completed, the reaction mixture was poured into a large amount of water to precipitate, and the precipitate was col...

Embodiment 3

[0046] Add 9.91 g (0.05 mol) of 4,4'-diaminodiphenylmethane, 6.00 g (0.20 mol) of paraformaldehyde and 250 mL of dimethyl sulfoxide into a 500 mL flask equipped with a magnetic stirrer. The mixture was stirred under ice bath for 30 minutes, then 22.83 g (0.10 mol) of bisphenol A was added, and then the temperature was gradually raised to 120° C. for 6 hours. Add anhydrous sodium sulfate after the reaction is lowered to room temperature, filter after drying for 12 hours, obtain the DMSO solution of the product, then add 17.31g (0.10mol) 4-nitrophthalonitrile and 43.25g (0.20mol) to it successively After the addition of anhydrous tripotassium phosphate, stir and react at room temperature for 24 hours. After the reaction was completed, the reaction mixture was poured into a large amount of water to precipitate, and the precipitate was collected by filtration and washed with water and ethanol several times to remove impurities. The compound of general formula 1 was obtained, 38.3...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a phthalonitrile modified benzoxazine and epoxy resin composite material, preparation and an application. According to the invention, phthalonitrile modified benzoxazine and epoxy resin are composited, and the hthalonitrile modified benzoxazine and epoxy resin composite material is a novel high-performance thermoset polymer composite material; phenolic hydroxyl groups produced through benzoxazine curing not only can be taken as a phthalonitrile curing catalyst, but also can be taken as an epoxy resin curing agent, through synthetic curing of phthalonitrile, benzoxazine and epoxy resin, the crosslinking density of the material is further increased, and properties such as thermal oxidation stability, radiation resistance, high temperature resistance, flame retardancy, corrosion resistance, low water absorption property and the like are further improved, so that the material has excellent comprehensive performance to attract broad attention and is taken as high-performance resin material for wide application in the high-technology fields such as electronic industry, aerospace and the like. According to the monomer preparation method, the synthesis period is greatly shortened, raw materials for monomer synthesis are cheap and easily available, the preparation method is simple and convenient, and the yield is high. The related processing technology of the composite material is simple, and the performance is good.

Description

technical field [0001] The invention belongs to the field of benzoxazine and epoxy resin in polymer synthetic materials, and specifically relates to a composite material of benzoxazine and epoxy resin modified by phthalonitrile, its preparation method and application. Background technique [0002] Epoxy resins generally refer to organic compounds containing two or more epoxy groups in the molecule. Due to the active epoxy groups in the molecular structure, they can undergo cross-linking reactions with various types of curing agents. It forms an insoluble polymer with a three-way network structure. The cured epoxy resin has good physical and chemical properties, such as high bonding strength, good dielectric properties, small curing shrinkage, good dimensional stability, high hardness, good flexibility, and is resistant to alkalis and most solvents. Stable, so it is widely used in various sectors of national defense and national economy for pouring, impregnation, lamination,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08L63/00C08L79/04C08G73/06C08G59/62C07D265/16
Inventor 吕满庚郑剑王莹梁利岩吴昆
Owner 国科广化(南雄)新材料研究院有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com