CN111743248A

CN111743248A - High-adhesion graphene conductive glove and preparation process thereof

Info

Publication number: CN111743248A
Application number: CN201910234502.3A
Authority: CN
Inventors: 耿宏章; 耿文铭; 朱庆霞
Original assignee: Carbon Star Technology Tianjin Co ltd
Current assignee: Carbon Star Technology Tianjin Co ltd
Priority date: 2019-03-26
Filing date: 2019-03-26
Publication date: 2020-10-09

Abstract

The invention discloses a high-adhesion graphene conductive glove and a preparation process thereof, and is characterized in that: (1) the material of the glove is not limited, the graphene conductive glove can be prepared only by coating the surface of the finished glove with the graphene conductive solution, and the preparation process is simple; (2) waterborne polyurethane, graphene, a dispersing agent and a tackifier are added to prepare the waterborne antistatic coating, so that the waterborne antistatic coating is environment-friendly; (3) preparing a conductive coating on the surface of the glove by a dropper dropping or scraper coating method; (4) the water-based polyurethane increases the adhesive force between the glove substrate and the carbon nano tube, and the tackifier is used as anti-dyeing paste to prevent the conductive coating from dyeing dizzy in the glove and ensure that the part which is not coated with the conductive coating is not dyed dizzy. And cleaning and drying to prepare the graphene conductive gloves.

Description

High-adhesion graphene conductive glove and preparation process thereof

Technical Field

The invention relates to a preparation process for simply preparing a high-adhesion graphene conductive glove.

Background

As intelligent electronic products come into the lives of people, electronic products such as touch screen mobile phones are widely used. Touch screens are generally classified into capacitive screens and resistive screens in principle, and the resistive screens change the distance between the two screens by pressing, so that the contact resistance is changed to send instructions. The capacitive screen forms capacitance with the screen through a finger, and an instruction is sent along with the change of the capacitance. Compared with a resistance screen, the capacitive screen is more sensitive, has longer service life and is not easy to scratch, and the like, so the capacitive screen is more widely used. Gloves become a necessity for travel in cold winter, but because gloves are insulators, the capacitance between the fingers and the screen fails and no instructions can be sent. In order to bring convenience to people, the graphene conductive gloves are invented.

Disclosure of Invention

The invention aims to provide a preparation process of a graphene conductive glove, which is high in adhesive force and simple in preparation method.

The technical scheme of the invention is as follows: graphene is used as a conductive substance, sodium dodecyl benzene sulfonate is used as a dispersing agent to prepare a graphene solution, and triton and waterborne polyurethane are added to obtain the coating. And preparing the conductive coating by adopting a dropper dropping coating or scraper film scraping method, and washing and drying to obtain the graphene conductive glove.

The main innovation points of the invention are as follows: the graphene conductive gloves prepared by the surface coating method save raw materials without changing the original process conditions of the gloves, the water-based polyurethane is used as a binder, the adhesive force of the coating is improved, the service life of the coating is prolonged, the coating can be prepared at normal temperature and normal pressure, and the coating is water-based, green, environment-friendly, nontoxic and harmless.

The method for preparing the graphene dispersion liquid in the method of the invention comprises the following steps: graphene with the purity of 50-96% is used as a raw material, sodium dodecyl benzene sulfonate is used as a dispersing agent to prepare an aqueous dispersion with the graphene content of 0.1-1 wt%, wherein the concentration of the sodium dodecyl benzene sulfonate is 1-10 wt%, the ultrasonic power is 60-150W, and the ultrasonic time is 30-90 min.

The preparation process of the graphene coating in the method is as follows: slowly adding triton and waterborne polyurethane into the graphene dispersion liquid, stirring while adding to make the concentration of the triton and the waterborne polyurethane reach 1-8 wt% and 0.1-1 wt% respectively, and obtaining the graphene coating.

The preparation process of the graphene conductive glove in the method is as follows: the method comprises the steps of coating a graphene coating on a glove substrate with a heating temperature of 60-130 ℃ by a dripping or scraper coating method, soaking and rinsing the glove in water for 2-4 times, 10-60 min each time, and drying to obtain the graphene conductive glove, wherein the drying temperature is 60-100 ℃ each time.

In the process of preparing the graphene conductive gloves, the conductive coating can be stained in other parts of the gloves due to the fact that the addition amount of the triton is too small, and the larger the addition amount of the waterborne polyurethane is, the larger the surface resistance is, the better the adhesive force is.

Reagents and materials used in the invention: triton, sodium dodecyl benzene sulfonate, nitric acid, acetone and graphene are all analytically pure.

Drawings

Fig. 1 is a preparation process of a graphene conductive glove.

Detailed Description

The present invention will be described in detail with reference to specific examples.

Graphene with the purity of 90% is used as a conductive substance, and water-based polyurethane is used as an adhesive to prepare a water-based paint. 10 ml of graphene solution with the mass fraction of 0.1% is prepared in a small bottle of 30 ml, 100 mg of sodium dodecyl benzene sulfonate is added, and the graphene dispersion liquid is prepared by ultrasonic treatment for 60 min. And pouring the graphene dispersion liquid into a small beaker, adding triton and waterborne polyurethane under low-speed mechanical stirring to make the concentration of the dispersion liquid reach 3wt% and 0.5wt%, and obtaining the graphene coating. Coating the graphene coating on a glove substrate with the temperature of 130 ℃ by using a dropper, drying, carefully soaking in deionized water for 10 min, taking out, drying, washing with a large amount of deionized water for 2 times, and drying to obtain the graphene conductive glove.

Claims

1. A high-adhesion graphene conductive glove and a preparation process thereof are characterized in that the material of the glove is not required, graphene is dispersed by using ultrasonic waves through a dispersing agent, a graphene conductive coating is prepared, and the graphene conductive glove is prepared by performing surface coating through a method of dropping by a suction pipe or scraping by a scraper; the adhesive force of the graphene conductive coating is greatly improved by adding the waterborne polyurethane, the viscosity of the conductive coating is increased by adding the triton, the halation of the conductive coating is prevented, the conductive coating is only coated on the bellies of the thumb, the index finger and the middle finger, and the raw materials are saved.

2. The method according to claim 1, wherein the dispersant is sodium dodecylbenzenesulfonate with a concentration of 1-10 wt%.

3. The method according to claim 1, wherein the graphene dispersion is used in a concentration of 0.1 to 1 wt.%.

4. The method according to claim 1, wherein ultrasonic power is 60-150W and the time is 30-90 min when the graphene is dispersed.

5. The process according to claim 1, wherein the aqueous polyurethane has a mass fraction of from 0.1% to 1% by weight.

6. The method according to claim 1, wherein the mass fraction of triton added is 2 to 6 wt%.

7. The method of claim 1, wherein the glove substrate is heated to a temperature of 60 to 130 ℃ during the coating.

8. The method according to claim 1, wherein the graphene conductive gloves are prepared by dropping on a suction pipe or blade coating on the surface, so that the graphene conductive gloves have strong adhesion and the service life of the conductive gloves is prolonged.