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

Electret nanofiber filter material for automobile air conditioning filter elements and preparation method thereof

A technology of nanofibers and automotive air conditioners, which is applied in the fields of filtration and separation, membrane filters, separation methods, etc., and can solve the problems of limiting the effect of automotive air conditioning filters on air quality improvement, easy failure service life, and huge impact

Pending Publication Date: 2019-04-09
嘉兴富瑞邦新材料科技有限公司
View PDF7 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The air in the car of modern cars is filtered through the car air conditioner filter element and then added to the car or circulated in the car through the car air conditioner filter element. Therefore, the car air conditioner filter element has a great influence on the air quality control in the car. Most of them are melt-blown filter materials, which are prone to failure and short service life in high-humidity environments, which severely limits the improvement effect of automotive air conditioning filters on air quality

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
  • Electret nanofiber filter material for automobile air conditioning filter elements and preparation method thereof
  • Electret nanofiber filter material for automobile air conditioning filter elements and preparation method thereof
  • Electret nanofiber filter material for automobile air conditioning filter elements and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A method for preparing an electret nanofiber filter material for an automotive air-conditioning filter, the specific steps of which are as follows:

[0054] (1) Prepare a liquid mixture in which the polymer is dissolved: add polyvinylidene fluoride to N,N-dimethylformamide, and continuously stir for 11 hours with a magnetic stirring device;

[0055] (2) Electrospinning is carried out after heating the polymer-dissolved liquid mixture with a mass concentration of 22% to 50°C, and the polymer-dissolved liquid mixture in the spinneret hole is rapidly solidified during the electrospinning process, wherein Rapid solidification means that the temperature of the liquid mixture dissolved in the polymer is raised to 80°C within 0.1ms at the outlet of the spinneret 3cm, and to 125°C within 0.9ms at the outlet of 10cm of the spinneret. The process parameters of electrospinning are : The voltage is 50KV, the receiving distance is 20cm, the perfusion rate is 0.1mL / h, the temperature...

Embodiment 2～24

[0061] A kind of preparation method of electret nanofiber filter material for automobile air conditioner filter element, its specific steps are consistent with embodiment 1, difference is the kind of polymer and solvent selected when step (1) prepares the liquid mixture that dissolves polymer , the temperature of the stage heating and the performance of the final product, see the table below for details. In the table, T1 (°C) represents the temperature of the first stage of heating, T2 (°C) represents the temperature of the second stage of heating, and A represents the surface static electricity Potential, B represents the filtration efficiency of particles from 0.006 to 1 μm, the unit of fiber diameter is μm, and the unit of pore size is μm; the unit of nanofiber diameter of nanofiber layer is μm, and the unit of nanofiber gram weight is g / m 2 , the unit of porosity is %; the unit of A is V, the unit of hydrophobic angle is (°), the unit of B is %, the unit of piezoresistance ...

Embodiment 25

[0065] A method for preparing an electret nanofiber filter material for an automotive air-conditioning filter, the specific steps of which are as follows:

[0066] (1) Prepare a liquid mixture in which the polymer is dissolved: add polyvinylidene fluoride to N-methylpyrrolidone, and continuously stir for 18 hours with a magnetic stirring device;

[0067] (2) Electrospinning is carried out after heating the polymer-dissolved liquid mixture with a mass concentration of 36% to 85°C, and the polymer-dissolved liquid mixture in the spinneret hole is rapidly solidified during the electrospinning process, wherein Rapid solidification means that the temperature of the liquid mixture dissolved in the polymer is raised to 105°C within 0.9ms at the outlet of the spinneret hole 5cm, and to 155°C within 0.1ms at the outlet of the spinneret hole 9cm. The process parameters of electrospinning are : The voltage is 20KV, the receiving distance is 10cm, the perfusion rate is 5.2mL / h, the temper...

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
stiffnessaaaaaaaaaa
Basis weightaaaaaaaaaa
Basis weightaaaaaaaaaa
Login to View More

Abstract

The invention relates to an electret nanofiber filter material for automobile air conditioning filter elements and a preparation method thereof. The preparation method comprises the steps of performing electrostatic spinning for polymer-dissolved liquid mixture to obtain an electret nanofiber filter material for automobile air conditioning filter elements, fast curing the polymer-dissolved liquidmixture at the outlet of a spinneret hole during electrostatic spinning, wherein fast curing comprises the step of firstly rising the temperature to t / 2 + / - 5 degrees centigrade at 3-5 cm away from the outlet of the spinneret hole in 0.1-0.9 ms, and then rising the temperature to 3 / 4 * t + / - 10 degrees centigrade at 9-10 cm away from the outlet of the spinneret hole in 0.1-0.9 ms, wherein t refersto a solvent boiling point of the polymer-dissolved liquid mixture. The surface electrostatic potential of the finished product is 1700-2300V, the hydrophobic angle is more than 150 degrees, the piezoresistance is less than 20 Pa, the charges are not attenuated after the prepared material is stored for one month. The preparation method of the electret nanofiber filter material for automobile airconditioning filter elements provided by the invention is simple in method and low in cost, the requirement on equipment is low, and the prepared filter material is good in electret effect and excellent in filter performance.

Description

technical field [0001] The invention belongs to the field of fiber electret materials, and relates to an electret nanofiber filter material for an automobile air-conditioning filter element and a preparation method thereof. Background technique [0002] High-performance electrospun nanofiber filter materials need to have the characteristics of high efficiency and low resistance, but conventional filter materials rely on the structural characteristics of the material itself (pore size, packing density, etc.) to achieve effective filtration of particles, usually in high-efficiency At the same time, it also has a high pressure resistance, resulting in poor filtration performance. Therefore, it is difficult to achieve an effective balance between filtration efficiency and pressure resistance, as well as high efficiency and low resistance only by the structural characteristics of the fiber itself. The introduction of electrostatic adsorption (electret material) can greatly improv...

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 Applications(China)
IPC IPC(8): B01D39/02B01D39/04D01F6/06D01F6/62D01F6/16D01F6/12
CPCB01D39/02B01D39/04B01D2239/0435B01D2239/0631B01D2239/10D01F6/06D01F6/12D01F6/16D01F6/62
Inventor 赵兴雷蒋攀华婷姜宗志
Owner 嘉兴富瑞邦新材料科技有限公司
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