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

Fluorenyl polyether sulfone resin with side chains containing benzoxazine and preparation method of fluorenyl polyether sulfone

A technology of fluorenyl polyethersulfone and benzoxazine, which is applied in the field of thermoplastic resin and its preparation, can solve the problems of small molecular weight and brittleness of polymers, and achieve good thermal and mechanical properties

Inactive Publication Date: 2013-07-17
三亚哈尔滨工程大学南海创新发展基地
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, traditional benzoxazine resins have defects such as brittleness and low molecular weight of polymers obtained by crosslinking, while polyethersulfone, as a thermoplastic resin, has good ductility, so combining the two can not only retain their respective characteristics, and can complement each other's defects

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
  • Fluorenyl polyether sulfone resin with side chains containing benzoxazine and preparation method of fluorenyl polyether sulfone
  • Fluorenyl polyether sulfone resin with side chains containing benzoxazine and preparation method of fluorenyl polyether sulfone
  • Fluorenyl polyether sulfone resin with side chains containing benzoxazine and preparation method of fluorenyl polyether sulfone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Synthesis of Fluorenyl Polyethersulfone with Amino Side Chain

[0024] Add 3.04g of 9,9-bis(4-aminophenyl)-2,7-dihydroxyfluorene, 1.48g of anhydrous potassium carbonate and Add 2.87g of dichlorodiphenyl sulfone, add 50mL dimethyl sulfoxide and 20mL toluene, blow nitrogen, raise the temperature to 160°C under stirring, after 3 hours of reaction, no more water will be brought out from the water separator, and the toluene will be evaporated. After continuing the reaction for 3 hours, the reaction was terminated, the reaction solution was cooled to room temperature, filtered, the filtrate was added to water, and the precipitate was precipitated, washed with water and ethanol, and finally vacuum-dried at 60°C for 24 hours to obtain a white fluorenyl group containing amino groups in the side chain The polyethersulfone powder was 4.78g, and the yield was 87%.

[0025] H NMR test results (500M, CDCl 3 , ppm): In the 1H NMR spectrum, δ=6.39~7.94ppm is the chemical shift of the...

Embodiment 2

[0027] Except that anhydrous potassium carbonate was changed to 1.65g and dichlorodiphenyl sulfone was changed to 3.44g, and the reaction temperature was changed to 180°C, other conditions were the same as in Example 1, and finally 4.16g of white side chain amino group-containing fluorenyl polyethersulfone powder was obtained. , yield 75%.

Embodiment 3

[0029] Synthesis of Fluorenyl Polyethersulfone Containing Benzoxazine Groups in Side Chains

[0030] Add 1.5g of fluorenyl polyethersulfone with amino groups in the side chains synthesized in Example 1, 0.94g of phenol, 30mL of xylene and 0.6g of paraformaldehyde into a three-necked flask in sequence, raise the temperature to 150°C, react for 6 hours, then cool down to room temperature, the reaction solution was poured into ethanol, filtered, the filter cake was washed with ethanol, and then vacuum-dried to obtain 1.2 g of fluorenyl polyethersulfone powder containing benzoxazine groups in the light yellow side chain, with a yield of 60 %.

[0031] H NMR test results (500M, CDCl 3 , ppm): In the 1H NMR spectrum, δ=6.77~7.81ppm is the chemical shift of the proton on the benzene ring, and 5.29ppm is the O-CH on the oxazine ring 2 The proton characteristic peak of -N, 4.69ppm is Ar-CH 2 The proton characteristic peak of -N. Infrared spectrum test results (KBr, cm -1 ): 3030cm...

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 relates to fluorenyl polyether sulfone resin with side chains containing benzoxazine and a preparation method of the fluorenyl polyether sulfone resin. The preparation method includes steps of adding 9, 9-bi (4-ammonia phenyl)-2, 7-dyhydroxyl fluorene, anhydrous potassium carbonate and dichlorophenyl sulfone into a container, then adding dimethyl sulfoxide and toluene, feeding nitrogen gas, heating to the temperature of 150-200 DEG C, reacting for 2-4 hours, steaming toluene, continuously reacting for 2-4 hours at the identical temperature, filtering after reacting, adding filtrate into water, precipitating to obtain fluorenyl polyether sulfone with side chains containing amino, adding the fluorenyl polyether sulfone with side chains containing amino, monophenol, paraformaldehyde, chloroform or dimethylbenzene into the container, heating to the temperature 60-160 DEG C, reacting by reflux for 5-24 hours, adding reactant into ethanol, and precipitating to obtain fluorenyl polyether sulfone resin with side chains containing benzoxazine. The fluorenyl polyether sulfone resin with side chains containing benzoxazine can be used independently or used with other resin and has good thermal properties and mechanical properties.

Description

technical field [0001] The invention relates to a thermoplastic resin and a preparation method thereof. Background technique [0002] With the rapid development of aerospace, transportation, information transmission and other technical fields, people's requirements for polymer materials are also getting higher and higher. Excellent mechanical properties, heat resistance, weather resistance and electrical insulation have become the goals pursued by people. At the same time, people's research on polymer materials is constantly developing in the direction of lightweight, low cost, high performance and multifunctionality, and the key to achieving this goal requires high-performance resins with different structures. To be done. The development of high-performance resins can be attributed to three aspects: heat resistance, heat and humidity resistance, and toughness. These three properties are mutually restrictive. Increasing the cross-linking density of cross-linked polymers c...

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): C08G75/23
Inventor 刘文彬韩丽王军祁彦龙徐元
Owner 三亚哈尔滨工程大学南海创新发展基地
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