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

A kind of polyimide fiber with multi-block structure and its preparation and application

A technology of polyimide fiber and polyimide is applied in the field of polyimide fiber with multi-block structure and its preparation, and achieves the effects of being beneficial to mass preparation, expanding application scope and excellent mechanical properties

Active Publication Date: 2021-08-31
DONGHUA UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In view of not seeing the report of similar anti-neutron radiation polyimide fiber at present, so propose the present invention

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
  • A kind of polyimide fiber with multi-block structure and its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) Under nitrogen protection, in a 250mL three-necked flask, add 120mL of NMP, 7.8g (0.04mol) of 6,8-adamantanediamine (Sinopharm Reagent, analytically pure), 10g (0.045mol)1, 2,4,5-Cyclohexanetetracarboxylic dianhydride (hydrogenated PMDA, Changzhou Sunshine Pharmaceutical Co., Ltd., analytically pure) was stirred and reacted at 5°C for 10 h to obtain solution A.

[0039] (2) Under nitrogen protection, in a 500mL three-necked flask, add 120mL of NMP, 9.4g (0.045mol) of 2-(3,5-diaminophenyl)malonic acid (Sinopharm Reagent, analytically pure), 12.9 g (0.04 mol) of 3,3',4,4'-benzophenonetetra-acid dianhydride (BTDA, Changzhou Sunshine Pharmaceutical Co., Ltd., analytical grade) was stirred and reacted at 5° C. for 10 h to obtain solution B.

[0040] (3) Under the protection of nitrogen, pour solution A in step (1) into solution B in step (2), continue to stir at 5°C for 6h, then react at 125°C, 145°C, and 165°C for 1h at each constant temperature, and finally Raise the ...

Embodiment 2

[0045](1) Under nitrogen protection, in a 250mL three-necked flask, add 130mL of DMAc, 8.32g (0.043mol) of 3,7-adamantanediamine (Sinopharm Reagent, analytically pure), 12g (0.054mol) of hydrogenated PMDA (Changzhou Sunshine Pharmaceutical Co., Ltd., analytically pure), stirred and reacted at 5°C for 8 hours to obtain solution A.

[0046] (2) Under nitrogen protection, in a 500mL three-necked flask, add 140mL of DMAc, 11.5g (0.054mol) of 2-(3,5-diaminophenyl)malonic acid (Sinopharm Reagent, analytically pure), 13.8 g (0.043 mol) of 3,3',4,4'-benzophenonetetraacid dianhydride (BTDA, Changzhou Sunshine Pharmaceutical Co., Ltd., analytically pure) was stirred and reacted at 5°C for 8 hours to obtain solution B.

[0047] (3) Under the protection of nitrogen, pour solution A in step (1) into solution B in step (2), continue to stir at 5°C for 6h, then react at 125°C, 145°C, and 165°C for 1h at each constant temperature, and finally Raise the temperature to 185° C. and react for 18...

Embodiment 3

[0052] (1) Under the protection of nitrogen, in a 250mL three-necked flask, add 125mL of NMP, 7.43g (0.038mol) of 4,6-adamantanediamine (Sinopharm Reagent, analytically pure), 15g (0.077mol) of cyclobutane Alkanedianhydride (Changzhou Sunshine Pharmaceutical Co., Ltd., analytically pure) was stirred and reacted at 5°C for 9 hours to obtain solution A.

[0053] (2) Under the protection of nitrogen, in a 500mL three-necked flask, add 160mL of NMP, 16.0g (0.077mol) of 2-(3,5-diaminophenyl)malonic acid (Sinopharm Reagent, analytically pure), 12.3 g (0.038 mol) of 2,3',3,4'-benzophenone tetraacid dianhydride (Changzhou Sunshine Pharmaceutical Co., Ltd., analytically pure) was stirred and reacted at 5° C. for 9 h to obtain solution B.

[0054] (3) Under the protection of nitrogen, pour solution A in step (1) into solution B in step (2), continue to stir at 5°C for 6h, then react at 125°C, 145°C, and 165°C for 1h at each constant temperature, and finally Raise the temperature to 185...

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
tensile strengthaaaaaaaaaa
glass transition temperatureaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to a polyimide fiber with multi-block structure and its preparation and application. The preparation method comprises: reacting an adamantane-containing aliphatic diamine monomer with a hydrogenated dianhydride-containing monomer to obtain solution A; React to obtain solution B; polymerize solution A and solution B, then add heavy element ion salts for complexation, and finally spin and heat treatment. The method is simple to operate, environmentally friendly, conducive to large-scale preparation, and has good industrialization prospects; the obtained polyimide fiber has a good anti-neutron radiation effect, and has excellent mechanical properties, heat resistance, and Solvent resistance, radiation resistance, corrosion resistance, can be used in special environments such as nuclear radiation and electromagnetic radiation.

Description

technical field [0001] The invention belongs to the field of polyimide fiber and its preparation and application, in particular to a polyimide fiber with multi-block structure and its preparation method and application. Background technique [0002] As an important clean energy, nuclear energy plays an important role in ensuring energy supply and realizing low-carbon and clean energy development. At the same time, various ionizing radiations are produced in the process of nuclear fission and fusion, thereby endangering the environment and human health. Especially in fields such as emergency repair of nuclear radiation accidents, maintenance of radioactive equipment in nuclear power plants, radiological medical diagnosis, radiation processing and other fields, extremely high requirements are placed on the personal protection of operators. Among them, neutron radiation is extremely harmful to personal safety, so the development of flexible neutron protection materials has bec...

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
Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/78C08G73/10G21F1/10
CPCC08G73/1007C08G73/1042C08G73/1078C08G73/1082D01F6/78G21F1/10
Inventor 张清华赵昕董杰甘锋方玉婷李猛猛
Owner DONGHUA UNIV
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