Electret filter base paper based on natural plant fibers as well as preparation method and application of base paper

A natural plant fiber, electret technology, applied in natural cellulose pulp/paper, fiber raw material processing, cellulose pulp post-processing, etc., can solve the problem of not having electret, and achieve less and good functional electret. Mechanical properties, good compatibility effect

Active Publication Date: 2021-02-05
QILU UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the graphene paper-based air filter material prepared by this patent has good filtration performance, but the graphene is only added to the pulp suspension and mixed simply, and the material itself does not have electret performance.

Method used

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  • Electret filter base paper based on natural plant fibers as well as preparation method and application of base paper
  • Electret filter base paper based on natural plant fibers as well as preparation method and application of base paper
  • Electret filter base paper based on natural plant fibers as well as preparation method and application of base paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] A kind of electret filter base paper based on natural plant fiber and preparation method thereof, comprises the following steps:

[0059] (1) Accurately weigh 10 g of absolute-dried bamboo pulp cellulose, loosen and disperse, and prepare the pulp to a concentration of 2%. Then add 0.1wt% aniline of the dry bamboo pulp cellulose pulp, adjust the pH to 1, and mix evenly under the condition of magnetic stirring to obtain the first suspension.

[0060] (2) Add the ammonium persulfate of 0.1wt% absolute dry bamboo pulp cellulose mass subsequently in the first suspension liquid, under ice-bath temperature 0 ℃, magnetic stirring reaction 1 hour, then filter, wash, dry in 105 ℃, The modified absolute dry bamboo pulp cellulose is obtained.

[0061] (3) Disperse and disperse the modified absolute-dried bamboo pulp cellulose evenly until the pulp concentration is 2%, to obtain the second suspension. Then in the second suspension, add dry bamboo pulp cellulose quality 1wt% polyla...

Embodiment 2

[0067] A kind of electret filter base paper based on natural plant fiber and preparation method thereof, comprises the following steps:

[0068] (1) Accurately weigh 10 g of dry hardwood pulp cellulose, loosen and disperse, and prepare the pulp to a concentration of 1%. Then add 0.2wt% pyrrole by weight of dry hardwood pulp cellulose, adjust the pH to 2, and mix evenly under the condition of magnetic stirring to obtain the first suspension.

[0069] (2) Subsequently, a potassium persulfate solution of 0.2 wt% of the absolute dry hardwood pulp cellulose mass was added to the first suspension, and the reaction was performed under magnetic stirring at ice bath temperature for 1.5 hours, then filtered, washed, and dried at 105° C. Obtain modified dry cellulose.

[0070] (3) Disperse and disperse the modified dry cellulose to a pulp concentration of 2%, to obtain a second suspension, add dry hardwood pulp cellulose quality 10wt% polylactic acid fiber, 2wt% polylactic acid fiber to...

Embodiment 3

[0076] A kind of electret filter base paper based on natural plant fiber and preparation method thereof, comprises the following steps:

[0077] (1) Accurately weigh 10 g of dry coniferous wood pulp cellulose, loosen and disperse, and prepare the pulp to a concentration of 5%. Then add 0.3wt% aniline by weight of dry softwood pulp cellulose, adjust the pH to 3, and mix evenly under the condition of magnetic stirring to obtain the first suspension.

[0078] (2) Then add 0.3wt% sodium persulfate solution to the first suspension, and react with magnetic stirring at ice bath temperature for 2 hours, then filter, wash, and dry at 105° C. to obtain modified absolute-dry cellulose.

[0079] (3) Disperse and disperse the modified dry cellulose to a slurry concentration of 2%, to obtain a second suspension, then add dry softwood pulp cellulose quality 8wt% polylactic acid fiber, 3wt% to the second suspension Polyvinyl alcohol (PVA), 1wt% SiO 2 , 0.5wt% nano-cellulose, and then disent...

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Abstract

The invention discloses electret filter base paper based on natural plant fibers as well as a preparation method and application of the electret filter base paper, and the preparation method comprisesthe following steps: (1) defibering and dispersing paper pulp cellulose, and adding a conductive polymer material monomer to obtain a first mixed suspension; (2) adding an oxidant into the first mixed suspension, conducting stirring and reacting for 1-3 hours at 0 DEG C in an ice bath, and conducting filtering, washing, drying and defibering to obtain a modified second mixed suspension; (3) adding polylactic acid fibers, a reinforcing agent, SiO2 and nanocellulose into the second mixed suspension, then conducting defibering and uniform mixing, and conducting papermaking to obtain paper; and (4) carrying out electret treatment on the prepared paper to obtain the filter base paper with the surface potential of 300V-400V. According to the method disclosed by the invention, the plant fiber isused as a base material, polyaniline is introduced into the surface of the fiber through a chemical modification method, and the added functional additive has excellent electret stability and good mechanical properties, so that the filtering efficiency of the base paper can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of new materials, and in particular relates to electret filter base paper based on natural plant fibers and its preparation method and application. [0002] technical background [0003] Since the beginning of the 21st century, severe infectious diseases such as SARS, highly pathogenic avian influenza and Ebola have occurred in the world, making individual biological protective equipment rapidly applied in the prevention and control of infectious diseases and emergency response to public health emergencies. Both foreign and foreign countries have invested a lot of manpower and material resources in the research of personal protective equipment. Among them, the masks that are easy to carry and use have a certain filtering effect on the air entering the lungs. When respiratory infectious diseases are prevalent, when working in a polluted environment such as dust, wearing a mask has a very good effect and is the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/08D21H11/00D21H13/30D21H17/68D21H21/18D21H11/18D21H21/14D21C9/00B01D39/14A41D13/11A41D31/04
CPCD21H27/08D21H11/00D21H13/30D21H17/68D21H21/18D21H11/18D21H21/14D21C9/004B01D39/14A41D13/11A41D31/04B01D2239/0435B01D2239/10B01D2239/12
Inventor 丁其军赵传山陈立栋李霞
Owner QILU UNIV OF TECH
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