阅读说明：本技术 用于柔性可变电阻器的聚苯胺导电织物及制备方法 (Polyaniline conductive fabric for flexible variable resistor and preparation method ) 是由 不公告发明人 于 2019-01-07 设计创作，主要内容包括：本发明涉及导电织物技术领域,且公开了一种用于柔性可变电阻器的聚苯胺导电织物,包括以下重量份数配比的原料：平纹织物1-3份、对甲苯磺酸2.5-3.5份、六水合氯化铁8-12份、苯胺10份。本发明还公开了一种用于柔性可变电阻器的聚苯胺导电织物的制备方法,该制备方法以平纹织物和聚苯胺为原料、以对甲苯磺酸为掺杂剂、以六水合氯化铁为氧化剂,采用聚苯胺气相沉积的方法,在低温真空环境下,制备出聚苯胺导电织物。本发明解决了用于制作柔性可变电阻器的聚苯胺导电织物的导电性能存在的稳定性较差的技术问题。(The invention relates to the technical field of conductive fabrics, and discloses a polyaniline conductive fabric for a flexible variable resistor, which comprises the following raw materials in parts by weight: 1-3 parts of plain weave fabric, 2.5-3.5 parts of p-toluenesulfonic acid, 8-12 parts of ferric chloride hexahydrate and 10 parts of aniline. The invention also discloses a preparation method of the polyaniline conductive fabric for the flexible variable resistor, which takes plain weave fabric and polyaniline as raw materials, takes p-toluenesulfonic acid as a doping agent and ferric chloride hexahydrate as an oxidizing agent, and adopts a polyaniline vapor deposition method to prepare the polyaniline conductive fabric in a low-temperature vacuum environment. The invention solves the technical problem of poor stability of the conductivity of the polyaniline conductive fabric used for manufacturing the flexible variable resistor.)

1. The polyaniline conductive fabric for the flexible variable resistor is characterized by comprising the following raw materials in parts by weight: 1-3 parts of plain weave fabric, 2.5-3.5 parts of p-toluenesulfonic acid, 8-12 parts of ferric chloride hexahydrate and 10 parts of aniline.

2. The polyaniline conductive fabric according to claim 1, wherein the polyaniline conductive fabric comprises the following raw materials in parts by weight: 2 parts of plain weave fabric, 3 parts of p-toluenesulfonic acid, 10 parts of ferric chloride hexahydrate and 10 parts of aniline.

3. The polyaniline conductive fabric according to claim 1, wherein the polyaniline conductive fabric comprises the following raw materials in parts by weight: 2 parts of plain weave fabric, 2.5 parts of p-toluenesulfonic acid, 12 parts of ferric chloride hexahydrate and 10 parts of aniline.

4. The polyaniline conductive fabric according to claim 1, wherein the polyaniline conductive fabric comprises the following raw materials in parts by weight: 2 parts of plain weave fabric, 3.5 parts of p-toluenesulfonic acid, 8 parts of ferric chloride hexahydrate and 10 parts of aniline.

5. The polyaniline conductive fabric according to claim 1, wherein the polyaniline conductive fabric comprises the following raw materials in parts by weight: 2 parts of plain weave fabric, 3 parts of p-toluenesulfonic acid, 12 parts of ferric chloride hexahydrate and 10 parts of aniline.

6. The preparation method of the polyaniline conductive fabric for the flexible variable resistor is characterized by comprising the following steps of:

s1, adding 2-5 parts by mass of sodium hydroxide and 1-3 parts by mass of ethanol into 18-25 parts by mass of deionized water, and uniformly stirring to prepare a pretreatment solution;

s2, adding 1-3 parts by mass of plain woven fabric into the pretreatment solution in the step S1, soaking and boiling at a constant temperature of 40-60 ℃ for 1-2 hours, then taking out the fabric, repeatedly washing with deionized water until the pH value is neutral, naturally drying at room temperature, and preparing to obtain a pretreated fabric;

s3, adding 2.5-3.5 parts by mass of p-toluenesulfonic acid into 5-10 parts by mass of deionized water, and preparing to obtain a soaking solution A after uniform ultrasonic dispersion;

s4, immersing the pretreated fabric in the step S2 in the impregnating solution A in the step S3, soaking at the constant temperature of 35-40 ℃ for 1.5-2h, taking out the fabric, and naturally airing at room temperature to prepare a fabric A;

s5, adding 8-12 parts by mass of ferric chloride hexahydrate into 8-15 parts by mass of ethanol, and stirring and mixing uniformly to prepare a soaking solution B;

s6, immersing the fabric A in the step S4 in the impregnating solution B in the step S5, soaking for 1.5-2h at the constant temperature of 35-40 ℃, taking out the fabric, placing the fabric in a vacuum drying oven, and drying for 2-4h at the temperature of 45-65 ℃ to prepare a fabric B;

s7, hanging the fabric B in the step S6 in a closed container, placing 10 parts by mass of aniline under the fabric B in the closed container, carrying out polymerization reaction for 2-5h under the vacuum condition of 5-15 ℃, taking out the fabric, washing the fabric for 3-5 times by using deionized water, placing the fabric in a vacuum drying oven, drying the fabric for 1-2h at 45-65 ℃, taking out the fabric, and naturally cooling the fabric to room temperature to prepare the polyaniline conductive fabric.

Technical Field

The invention relates to the technical field of conductive fabrics, in particular to a polyaniline conductive fabric for a flexible variable resistor and a preparation method thereof.

Background

Because the common variable resistor is hard, the current noise of the synthetic carbon film potentiometer is large in nonlinearity, and the humidity resistance and the resistance value stability are poor; the metal-glass glaze potentiometer has large contact resistance and current noise, and along with the rapid development of microelectronic information technology, an intelligent flexible component must become a hot research topic in the technical field of textile frontier, and the flexible variable resistor has great demand for manufacturing.

Currently, us researchers (Adams, jr. et al) have explored this aspect by depositing polypyrrole onto a common fabric to produce a conductive fabric, and then removing the polypyrrole with a water jet unevenly in different directions of the fabric, respectively, so that the fabric exhibits resistance anisotropy in a given direction, and exhibits variable resistor characteristics. The method is innovative but not easy to operate, and the conductivity of the method is unstable.

The invention provides a polyaniline conductive fabric for a flexible variable resistor and a preparation method thereof, aiming at solving the technical problem of poor stability of the conductivity of the polyaniline conductive fabric for manufacturing the flexible variable resistor.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a polyaniline conductive fabric for a flexible variable resistor and a preparation method thereof, and solves the technical problem of poor stability of the conductivity of the polyaniline conductive fabric for manufacturing the flexible variable resistor.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme:

the polyaniline conductive fabric for the flexible variable resistor comprises the following raw materials in parts by weight: 1-3 parts of plain weave fabric, 2.5-3.5 parts of p-toluenesulfonic acid, 8-12 parts of ferric chloride hexahydrate and 10 parts of aniline.

Preferably, the polyaniline conductive fabric comprises the following raw materials in parts by weight: 2 parts of plain weave fabric, 3 parts of p-toluenesulfonic acid, 10 parts of ferric chloride hexahydrate and 10 parts of aniline.

Preferably, the polyaniline conductive fabric comprises the following raw materials in parts by weight: 2 parts of plain weave fabric, 2.5 parts of p-toluenesulfonic acid, 12 parts of ferric chloride hexahydrate and 10 parts of aniline.

Preferably, the polyaniline conductive fabric comprises the following raw materials in parts by weight: 2 parts of plain weave fabric, 3.5 parts of p-toluenesulfonic acid, 8 parts of ferric chloride hexahydrate and 10 parts of aniline.

Preferably, the polyaniline conductive fabric comprises the following raw materials in parts by weight: 2 parts of plain weave fabric, 3 parts of p-toluenesulfonic acid, 12 parts of ferric chloride hexahydrate and 10 parts of aniline.

The preparation method of the polyaniline conductive fabric for the flexible variable resistor comprises the following steps:

s1, adding 2-5 parts by mass of sodium hydroxide and 1-3 parts by mass of ethanol into 18-25 parts by mass of deionized water, and uniformly stirring to prepare a pretreatment solution;

s2, adding 1-3 parts by mass of plain woven fabric into the pretreatment solution in the step S1, soaking and boiling at a constant temperature of 40-60 ℃ for 1-2 hours, then taking out the fabric, repeatedly washing with deionized water until the pH value is neutral, naturally drying at room temperature, and preparing to obtain a pretreated fabric;

s3, adding 2.5-3.5 parts by mass of p-toluenesulfonic acid into 5-10 parts by mass of deionized water, and preparing to obtain a soaking solution A after uniform ultrasonic dispersion;

s4, immersing the pretreated fabric in the step S2 in the impregnating solution A in the step S3, soaking at the constant temperature of 35-40 ℃ for 1.5-2h, taking out the fabric, and naturally airing at room temperature to prepare a fabric A;

s5, adding 8-12 parts by mass of ferric chloride hexahydrate into 8-15 parts by mass of ethanol, and stirring and mixing uniformly to prepare a soaking solution B;

s6, immersing the fabric A in the step S4 in the impregnating solution B in the step S5, soaking for 1.5-2h at the constant temperature of 35-40 ℃, taking out the fabric, placing the fabric in a vacuum drying oven, and drying for 2-4h at the temperature of 45-65 ℃ to prepare a fabric B;

s7, hanging the fabric B in the step S6 in a closed container, placing 10 parts by mass of aniline under the fabric B in the closed container, carrying out polymerization reaction for 2-5h under the vacuum condition of 5-15 ℃, taking out the fabric, washing the fabric for 3-5 times by using deionized water, placing the fabric in a vacuum drying oven, drying the fabric for 1-2h at 45-65 ℃, taking out the fabric, and naturally cooling the fabric to room temperature to prepare the polyaniline conductive fabric.

(III) advantageous technical effects

Compared with the prior art, the invention has the following beneficial technical effects:

1. the average change rate of the static surface specific resistance of the polyaniline conductive fabric per day within 1-60 days is 7.21-7.62%, and compared with the average change rate of the static surface specific resistance of the polyaniline conductive fabric per day within 1-60 days of 11.56-11.89% in a comparative example, the technical effect of remarkably reducing the average change rate of the static surface specific resistance of the polyaniline conductive fabric per day is achieved;

the static surface specific resistance of the polyaniline conductive fabric is 611-60 ℃ plus 735 omega, compared with the static surface specific resistance of the polyaniline conductive fabric in the comparative example which is 837-plus 1269 omega at 20-60 ℃, the technical effect of remarkably reducing the static surface specific resistance value of the polyaniline conductive fabric is achieved, and the technical effect of remarkably reducing the change range of the static surface specific resistance of the polyaniline conductive fabric along with the temperature is achieved;

the static surface specific resistance of the polyaniline conductive fabric is 502-533 omega when the relative humidity is 40-80%, compared with the static surface specific resistance of the polyaniline conductive fabric in the comparative example of 812-945 omega when the relative humidity is 40-80%, the technical effect of remarkably reducing the static surface specific resistance of the polyaniline conductive fabric is achieved, and the technical effect of remarkably reducing the change amplitude of the static surface specific resistance of the polyaniline conductive fabric along with the relative humidity is achieved;

therefore, the technical effect of remarkably improving the stability of the conductivity of the polyaniline conductive fabric is achieved by the technical scheme.

2. According to the preparation method, the plain weave fabric and the polyaniline are used as raw materials, the p-toluenesulfonic acid is used as a doping agent, the ferric chloride hexahydrate is used as an oxidizing agent, the polyaniline conductive fabric is prepared by adopting a polyaniline vapor deposition method in a low-temperature vacuum environment, and then the polyaniline conductive fabric is used for preparing the flexible variable resistor.

Detailed Description