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Straw fiber doped polyaniline electromagnetic shielding material and preparation method of straw fiber doped polyaniline electromagnetic shielding material

An electromagnetic shielding material and straw fiber technology, which is applied in fiber processing, plant fiber, textiles and paper making, can solve the problems of high carbon fiber price, difficulty in large-scale industrial production, and complicated operation, so as to improve fiber extraction rate and reduce raw material cost and efficiency improvement

Inactive Publication Date: 2017-06-13
DONGGUAN JIAQIAN NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is complicated to operate, and the price of the carbon fiber used is relatively high, making it difficult to produce on a large scale.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for preparing a polyaniline shielding material doped with straw fibers, comprising the following steps:

[0026] (1) Cut the straw to 6cm, soak it in water for 8 hours, heat it to 60°C in 1.5mol / L sodium hydroxide solution, treat it for 2 hours, wash the straw fiber to neutral after filtering, dry it, and use it later Oxygen plasma was used to activate the straw fiber surface for 30 minutes;

[0027] (2) configure mixed acid solution 0.4L, mixed acid solution is the mixture of camphorsulfonic acid and hydrochloric acid, wherein the concentration of camphorsulfonic acid is 1.5mol / L, the concentration of hydrochloric acid is 0.7mol / L, and it is equally divided into two 1 part, mix 100 g of the treated straw fiber with 100 g of aniline monomer, disperse in a part of mixed acid solution, and ultrasonically disperse for 1 hour to obtain a raw material solution;

[0028] (3) Dissolve potassium permanganate in another mixed acid solution to obtain an oxidation soluti...

Embodiment 2

[0032] A method for preparing a polyaniline shielding material doped with straw fibers, comprising the following steps:

[0033] (1) Cut the straw to 10cm, soak in water for 10h, heat to 80°C in 2.8mol / L sodium hydroxide solution, treat for 5h, filter and wash the straw fiber to neutral, dry it, and use it later Oxygen plasma was used to activate the straw fiber surface for 60 minutes;

[0034] (2) Configure 2L of mixed acid solution, the mixed acid solution is a mixture of camphorsulfonic acid and hydrochloric acid, wherein the concentration of camphorsulfonic acid is 1.5mol / L, the concentration of hydrochloric acid is 0.7mol / L, and it is equally divided into two parts , mix 100 g of treated straw fiber with 150 g of aniline monomer, disperse in a portion of mixed acid solution, and ultrasonically disperse for 2 hours to obtain a raw material solution;

[0035] (3) Dissolve potassium permanganate in another mixed acid solution to obtain an oxidation solution. The concentrati...

Embodiment 3

[0039] A method for preparing a polyaniline shielding material doped with straw fibers, comprising the following steps:

[0040] (1) Cut the straw to 6cm, soak in water for 10h, heat to 80°C in 1.5mol / L sodium hydroxide solution, treat for 2h, filter and wash the straw fiber to neutral, dry it, and use it later Oxygen plasma was used to activate the straw fiber surface for 60 minutes;

[0041] (2) configure mixed acid solution 0.4L, mixed acid solution is the mixture of camphorsulfonic acid and hydrochloric acid, wherein the concentration of camphorsulfonic acid is 1.5mol / L, the concentration of hydrochloric acid is 0.7mol / L, and it is equally divided into two After mixing 100 g of the treated straw fibers with 150 g of aniline monomer, they were dispersed in a portion of the mixed acid solution and ultrasonically dispersed for 1 hour to obtain a raw material solution;

[0042](3) Dissolve potassium permanganate in another mixed acid solution to obtain an oxidation solution. ...

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Abstract

The invention discloses a straw fiber doped polyaniline electromagnetic shielding material and a preparation method of the straw fiber doped polyaniline electromagnetic shielding material. The preparation method comprises the following steps: under the condition of -8 DEG C to 0 DEG C, dropwise adding an oxidation solution into a raw material solution containing a polyaniline monomer and straw fibers by adopting a peristaltic pump; slowly stirring; after dropwise adding, stopping stirring and continually reacting for 10h to 16h; after reacting, filtering and centrifuging and washing with absolute ethyl alcohol for 3 to 5 times; after drying in vacuum, preparing the straw fiber doped polyaniline electromagnetic shielding material. The preparation method of the shielding material is simple; raw materials are cheap and easy to obtain; the shielding material has high shielding efficiency, a wide range and good industrialized production prospect.

Description

technical field [0001] The invention relates to the field of electromagnetic shielding materials, in particular to a polyaniline electromagnetic shielding material doped with straw fibers and a preparation method thereof. Background technique [0002] Electromagnetic shielding refers to the use of shielding materials to attenuate or block the transmission of electromagnetic energy between the shielded area and the outside world. The principle is that electromagnetic waves are reflected on the surface of the shielding material, absorbed inside, and lost during transmission to produce a shielding effect. The shielding performance of the shielding material is determined by the shielding effectiveness, which is closely related to the charge, current and polarization induced on the surface of the shielding material structure and inside the shielding material. Electromagnetic shielding materials are mainly divided into metal materials, carbon materials and polymer materials. Meta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/02C08L97/02C08G73/02D06M11/38D06M10/00D06M101/06
CPCC08L79/02C08G73/0266C08L97/02D06M10/00D06M11/38D06M2101/06
Inventor 王海燕
Owner DONGGUAN JIAQIAN NEW MATERIAL TECH CO LTD
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