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Lignosulfonic acid/polyaniline/poly(3,4-ethylenedioxythiophene) composite antistatic coating as well as preparation and application thereof

A technology of ethylenedioxythiophene and lignosulfonic acid, which is applied in conductive coatings, epoxy resin coatings, coatings, etc., can solve the problems of difficult dispersion, high density, and easy agglomeration, and achieve low cost, simple preparation process, Realize the effect of static electricity

Active Publication Date: 2021-01-26
国科广化精细化工孵化器(南雄)有限公司 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the former, it is easy to agglomerate and difficult to disperse. For the latter two, it is a problem that the density is high and easy to settle. Therefore, it is necessary to consider preparing an antistatic agent with good dispersibility, low density and not easy to settle.

Method used

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  • Lignosulfonic acid/polyaniline/poly(3,4-ethylenedioxythiophene) composite antistatic coating as well as preparation and application thereof
  • Lignosulfonic acid/polyaniline/poly(3,4-ethylenedioxythiophene) composite antistatic coating as well as preparation and application thereof
  • Lignosulfonic acid/polyaniline/poly(3,4-ethylenedioxythiophene) composite antistatic coating as well as preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] This embodiment provides a kind of lignosulfonic acid / polyaniline / poly(3,4-ethylenedioxythiophene) composite antistatic coating and lignosulfonic acid / polyaniline / poly(3,4-ethylenedioxythiophene) ) preparation method of composite antistatic coating.

[0043] (1) Add 5g of sodium lignosulfonate into a 500ml flask, add 200ml of 1mol / L hydrochloric acid solution, and stir until completely dissolved. Then 4.0ml of aniline was added thereto, and the mixture was placed in a water bath at 25°C for 30min. In addition, weigh 4.94g of ammonium persulfate into a 250ml flask, add 100ml of 1mol / L hydrochloric acid solution, keep the temperature at 25°C for 30min, stir until the ammonium persulfate is completely dissolved, then add it into the above mixture, and stir with a magnet (100rpm) 24h. The obtained dark green product was suction-filtered, washed with deionized water until the filtrate was colorless, and then vacuum freeze-dried for 48 hours with a freeze dryer to obtain so...

Embodiment 2

[0047] This example provides a method for preparing a lignosulfonic acid / polyaniline / poly(3,4-ethylenedioxythiophene) composite antistatic coating.

[0048] (1) The preparation of lignosulfonic acid / polyaniline / poly(3,4-ethylenedioxythiophene) composite takes the same method as in Example 1

[0049] (2) Disperse the ligninsulfonic acid / polyaniline / poly(3,4-ethylenedioxythiophene) compound in acetone to obtain a dispersion, make the concentration of the dispersion 0.05mg / mL, and mix the dispersion with e- 51 epoxy resin is mixed according to the mass ratio of lignosulfonic acid / polyaniline / poly(3,4-ethylenedioxythiophene) compound and e-51 epoxy resin at 2:100, and ultrasonicated at 20kHz and 25°C for 30min, Stir at 100rpm for 1 hour, then add triethylenetetramine curing agent with a mass ratio of 7:100 to the epoxy resin, mix and stir for 15 minutes to obtain an antistatic coating, and in a vacuum oven, vacuum the air bubbles to obtain an antistatic coating; The coating instr...

Embodiment 3

[0051] This example provides a method for preparing a lignosulfonic acid / polyaniline / poly(3,4-ethylenedioxythiophene) composite antistatic coating.

[0052] (1) The preparation of lignosulfonic acid / polyaniline / poly(3,4-ethylenedioxythiophene) composite adopts the same method as in Example 1.

[0053] (2) Disperse the ligninsulfonic acid / polyaniline / poly(3,4-ethylenedioxythiophene) compound in acetone so that the concentration of the dispersion is 0.05 mg / mL, and mix the dispersion with e-51 epoxy The resin was mixed according to the mass ratio of lignosulfonic acid / polyaniline / poly(3,4-ethylenedioxythiophene) compound and e-51 epoxy resin at 5:100, and then ultrasonicated at 20kHz and 25°C for 30min, 100rpm Stir for 1 hour, then add a triethylenetetramine curing agent with a mass ratio of 7:100 to the epoxy resin, mix and stir for 15 minutes to mix evenly, and under vacuum oven conditions, vacuum the air bubbles to obtain an antistatic coating; Electrostatic paint was applie...

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Abstract

The invention belongs to the technical field of preparation of antistatic coatings, and discloses a lignosulfonic acid / polyaniline / poly(3,4-ethylenedioxythiophene) compound antistatic coating as wellas a preparation method and application thereof. According to the preparation method, renewable biomass material lignin is adopted, the hydrophilicity of polyaniline and poly (3,4-ethylenedioxythiophene) is improved by utilizing the diversity and amphipathy of groups of sodium lignin sulfonate and the interaction of positive and negative charges and hydrogen bonds between sodium lignin sulfonate and polyaniline and poly(3,4-ethylenedioxythiophene), and sodium lignin sulfonate is uniformly dispersed in epoxy resin; and the obtained lignosulfonic acid / polyaniline / poly(3,4-ethylenedioxythiophene)which is highly dispersed in the obtained coating can form a conductive channel, so that free electron carriers are freely transmitted, and static electricity is eliminated.

Description

technical field [0001] The invention belongs to the technical field of preparation of antistatic coatings, in particular to a ligninsulfonic acid / polyaniline / poly(3,4-ethylenedioxythiophene) composite antistatic coating and its preparation and application. Background technique [0002] With the increasingly prominent energy and environmental issues, it has become a trend to replace fossil energy materials with renewable biomass materials. As a renewable biomass material, lignin is second only to cellulose in content. As a by-product of papermaking waste liquid, lignin is often overlooked, and the use of lignin to prepare high value-added materials has become a research hotspot. [0003] If a large amount of static electricity accumulates on insulating materials, it will cause the equipment to be unusable, such as causing distortion of precision instruments and scrapping of electronic components. Antistatic coatings can not only quickly conduct current and eliminate static ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/02C09D5/24C09D7/65B05D7/24B05D5/12
CPCC09D163/00C09D5/24C09D7/65B05D7/24B05D5/12C08L2201/04C08L2205/035B05D2203/35B05D2202/25B05D2202/15B05D2504/00B05D2518/00C08L97/005C08L79/02C08L65/00
Inventor 吕满庚陈兵史珺吴昆
Owner 国科广化精细化工孵化器(南雄)有限公司
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