Full-biphenyl polyaryletherketone precursor as well as preparation method and application thereof

A technology of polyaryletherketone and all-biphenyl type, which is applied in the field of all-biphenyl type polyaryletherketone precursor and its preparation, can solve the problems of high melting point and high molecular weight, increase the molecular weight of the polymer, and reduce the energy consumption of polymerization , Reduce the effect of side effects and gel content

Inactive Publication Date: 2021-06-18
JILIN UNIV
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the above technical problems, the present invention provides a method of "amorphous polymerization followed by crystallization transformation", which

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
  • Full-biphenyl polyaryletherketone precursor as well as preparation method and application thereof
  • Full-biphenyl polyaryletherketone precursor as well as preparation method and application thereof
  • Full-biphenyl polyaryletherketone precursor as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0035] Example 1:

[0036] Under the protection of a nitrogen atmosphere, 4248 g of cyclobutolane (solid content 10 wt%), 1010 ml toluene, 207 g of potassium carbonate, 286 g of dual fluoride monomer 1 and 186 g of biphenol were sequentially added to the polymerization reaction system, and the heated to 140 ° C, and Water, refluxing 2 h, by distillation, toluene in the reaction system, warmed to 190-210 ° C for 6 h, pour the reaction product into anhydrous methanol, wash and dried and dried to obtain a precursor, then dissolved in 4320 ml In THF, it was dissolved in a solution to the solution, and 540 ml of pH = 0.1 hydrochloric acid solution was added to the solution. After refluxing for 24 h, then the crystalline allophenyl polyether ether ketone (PEDEK) was obtained, and the crystalline allxes were washed and dried. PEDEK's characteristic viscosity is 2.09dl / g, T m It was 416.8 ° C.

Example Embodiment

[0037] Example 2:

[0038] Under the protection of a nitrogen atmosphere, 976 g of diphenyl sulfone (solid content of 30 wt%), 419 ml of xylene, 158.8 g of sodium carbonate, 294 g of double fluoride monomer 2 and 204.6 g of biphenol, heated to 180 EtOAc EtOAc EtOAc EtOAc EtOAc EtOAc EtOAc EtOAc EtOAc EtOAc EtOAc EtOAc EtOAc EtOAc. The precursor was dissolved in 4586 ml of chloroform. After the precursor dissolution, 179 g of dimethyl sulfoxide and 211 g 2-iodo-2-methylpropane were sequentially added, and the reaction product was poured into anhydrous water after 70 ° C for 48 h. In methanol, then washed with anhydrous methanol and dried to obtain a crystalline all-stranded benzene polyether ether ketone (PEDEK), PEDEK's characteristic viscosity is 2.09 dl / g, T m It is 416.8 ° C.

Example Embodiment

[0039] Example 3:

[0040] Under the protection of a nitrogen atmosphere, 4575 g of cyclobutolane (solid content 10 wt%), 1088 ml of toluene, 196.7 g of potassium carbonate, 24.4 g of cesium carbonate, 322.3 g of dual fluoride 3 and 186 g of bicyphhenol, heating To 140 ° C, the water was concentrated, refluxed for 2 h, and the toluene in the reaction system was removed, and the reaction product was warmed to 190 ° C to 210 ° C for 6 h, and the reaction product was poured into anhydrous methanol, pulverized and dried. Further, the precursor is dissolved in 4683 ml DMF. When the protrusion body is dissolved, 585 ml of pH = 0.1 mesylate solution is added to the solution. After refluxing 24 h, then washed with ethanol and water, and the crystallinity is obtained. Benzene polyether ether ketone (PEDEK), PEDEK's characteristic viscosity is 2.09 dl / g, T m It is 416.8 ° C.

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

PropertyMeasurementUnit
Intrinsic viscosityaaaaaaaaaa
Intrinsic viscosityaaaaaaaaaa
Intrinsic viscosityaaaaaaaaaa
Login to view more

Abstract

The invention provides a full-biphenyl polyaryletherketone precursor as well as a preparation method and application thereof, which belongs to the technical field of high polymer materials. The full-biphenyl polyaryletherketone precursor is obtained by carrying out polymerization reaction on a difluoro monomer and biphenol which are different from the traditional method at a lower temperature of 170-210 DEG C, and then the full-biphenyl polyaryletherketone precursor is subjected to acidification hydrolysis or a one-step reaction or a two-step reaction process to obtain full-biphenyl polyaryletherketone. Compared with the prior art, the method has the advantages that homogeneous polymerization is carried out at a low reaction temperature, and the obtained polymer is of a full-biphenyl structure, so that the rigidity, regularity and molecular weight of a molecular chain of the polymer are remarkably improved, and the prepared polymer has high Tm which reaches 416 DEG C or above, and the intrinsic viscosity reaches 2.09 dL/g or above.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a precursor of all-biphenyl type polyaryletherketone and its preparation method and application. Background technique [0002] Resin-based composites are widely used in various fields due to their light weight, excellent mechanical properties and designability. With the development of the aviation field, the flight speed of the next generation of fighter jets has been further increased, which puts forward higher requirements for the heat resistance of composite materials. The traditional resin matrix has been difficult to meet the requirements of long-term use at 350°C, short-term use at 400°C or high-temperature corrosion environment. Even polyetheretherketone (PEEK), a special engineering plastic, is gradually difficult to meet the national strategic needs. At the same time, foreign countries have begun to develop composite materials based on polyether ke...

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): C08G65/40
CPCC08G65/4031C08G65/4062C08G65/4081C08G65/4093
Inventor 杨砚超王晟道王贵宾庞金辉王岩张淑玲张梅栾加双
Owner JILIN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap