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

Aramid fiber coating liquid, preparation method thereof, diaphragm based on aramid fiber coating liquid and application

A coating liquid, aramid fiber technology, applied in the direction of electrical components, circuits, battery pack components, etc., can solve the problem of time-consuming and power consumption

Active Publication Date: 2020-01-17
HEBEI GELLEC NEW ENERGY MATERIAL SCI&TECHNOLOY CO LTD
View PDF12 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] It takes a lot of time to dissolve the aramid fiber while making the meta-aramid slurry, and it needs continuous heating and stirring while dissolving the aramid fiber, which consumes time and electricity

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
  • Aramid fiber coating liquid, preparation method thereof, diaphragm based on aramid fiber coating liquid and application
  • Aramid fiber coating liquid, preparation method thereof, diaphragm based on aramid fiber coating liquid and application
  • Aramid fiber coating liquid, preparation method thereof, diaphragm based on aramid fiber coating liquid and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A preparation method for an aramid fiber coating solution, comprising the following steps:

[0037] 1) Mix ceramic particles (alumina) with dimethylacetamide (DMAc) and stir for 30 minutes. Grinding with pin-type nano sand mill for 20min to obtain the first mixture, wherein the speed of sand milling is 900r / min, and the ratio of ceramic particles to dimethylacetamide is 15:70 in parts by mass; In the test, the particle size of the ceramic particles in the first mixture is D50: 0.3 μm, D90: 1 μm.

[0038] 2) Under a nitrogen atmosphere, stir the first mixture and m-phenylenediamine for 20 minutes, after stirring, cool down to 0°C in a chilled water bath, then add isophthaloyl chloride, and stir for 20 minutes (the temperature of this process is 0°C ), remove the water bath, then heat up to 80°C, and the heating rate is 6°C / min, add calcium hydroxide, and stir for 30min (the process temperature is 80°C), to obtain the second mixture, wherein, in parts by mass, the - The...

Embodiment 2

[0041] A preparation method for an aramid fiber coating solution, comprising the following steps:

[0042] 1) Mix ceramic particles (silicon dioxide) with dimethylacetamide (DMAc) and stir for 30 minutes. The first mixture was obtained by sanding with a pin-type nano-sand mill for 20 minutes, wherein the rotational speed of the sand mill was 900r / min, and the ratio of ceramic particles to dimethylacetamide was 17:75 in parts by mass; In the test, the particle size of the ceramic particles in the first mixture is D50: 0.5 μm, D90: 1.2 μm.

[0043] 2) Under a nitrogen atmosphere, stir the first mixture and m-phenylenediamine for 20 minutes, after stirring, cool down to 2°C in a chilled water bath, then add isophthaloyl chloride, and stir for 20 minutes (the temperature of this process is 2°C ), remove the water bath, then heat up to 80°C, and the heating rate is 7°C / min, add calcium hydroxide, and stir for 30min (the process temperature is 80°C), to obtain the second mixture, w...

Embodiment 3

[0046] A preparation method for an aramid fiber coating solution, comprising the following steps:

[0047] 1) Mix ceramic particles (barium titanate) with dimethylacetamide (DMAc), and stir for 30 minutes. The first mixture was obtained by using a pin-type nano-sand mill for 20 minutes, wherein the rotational speed of the sand mill was 900r / min, and the ratio of ceramic particles to dimethylacetamide was 20:80 in parts by mass; In the test, the particle size of the ceramic particles in the first mixture is D50: 0.6 μm, D90: 1.3 μm.

[0048] 2) Under a nitrogen atmosphere, stir the first mixture and m-phenylenediamine for 20 minutes, then cool down to 5°C in a chilled water bath after stirring, then add isophthaloyl chloride, and stir for 20 minutes (the process temperature is 5°C ), remove the water bath, then heat up to 80°C, and the heating rate is 8°C / min, add calcium hydroxide, and stir for 30min (the process temperature is 80°C), to obtain the second mixture, wherein, in...

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
Particle sizeaaaaaaaaaa
Thicknessaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses an aramid fiber coating liquid, a preparation method thereof, a diaphragm based on the aramid fiber coating liquid and application, the preparation method comprises the following steps: stirring and sanding ceramic particles and dimethylacetamide to obtain a first mixture; under the atmosphere of nitrogen or inert gas, stirring the first mixture and m-phenylenediamine, cooling to 0-5 DEG C after stirring, adding isophthaloyl dichloride, stirring, heating to 78-90 DEG C after stirring, adding calcium hydroxide, and stirring to obtain a second mixture; and mixing and stirring the second mixture and an organic matter, and adjusting the viscosity to 280-400 mpa.s to obtain the aramid fiber coating liquid. Starting from the synthesis direction, substances required by a diaphragm coating are added in the synthesis process, so that the pulping time is shortened while the cost is saved, and the safety performance of thermal shrinkage, needling and the like of the aramidfiber diaphragm is improved.

Description

technical field [0001] The invention belongs to the technical field of battery diaphragms, and in particular relates to an aramid fiber coating liquid and a preparation method thereof, a diaphragm based on the aramid fiber coating liquid and its application. Background technique [0002] It takes a lot of time to dissolve the aramid fiber while making meta-aramid slurry, and it needs continuous heating and stirring while dissolving the aramid fiber, which consumes time and electricity. [0003] In terms of the performance of the currently produced meta-aramid coating film, the MD and TD shrinkage values ​​at 130°C are ≥5%, and the acupuncture strength is ≤6N, and the production process needs at least 8 hours. [0004] Now it is necessary to invent a meta-aramid fiber coating slurry that improves the thermal shrinkage rate and saves production time. Contents of the invention [0005] Aiming at the deficiencies in the prior art, the object of the present invention is to pro...

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): H01M2/14H01M2/16
CPCH01M50/403H01M50/411H01M50/44Y02E60/10
Inventor 袁海朝徐锋李腾苏碧海
Owner HEBEI GELLEC NEW ENERGY MATERIAL SCI&TECHNOLOY CO LTD
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