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Antistatic leather finishing agent as well as preparation method and application thereof

A leather finishing agent and antistatic technology, which is applied in application, conductive coatings, leather surface treatment, etc., can solve the problems of application limitations and the decline of mechanical properties of composite materials, so as to avoid agglomeration, facilitate film formation, and improve system stability The effect of sex and film-forming effect

Inactive Publication Date: 2020-11-24
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is known that in the polymer matrix, the higher the content of conductive filler, the lower the resistivity of the composite material and the better the conductivity, but at the same time too much filler will lead to a significant decrease in the mechanical properties of the composite material, which limits its application, so high There is a certain contradiction between electrical properties and mechanical properties

Method used

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  • Antistatic leather finishing agent as well as preparation method and application thereof
  • Antistatic leather finishing agent as well as preparation method and application thereof
  • Antistatic leather finishing agent as well as preparation method and application thereof

Examples

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preparation example Construction

[0034] The invention discloses a preparation method of an antistatic leather finishing agent, which comprises the following steps:

[0035] (1) Preparation of Ti 3 C 2 Dispersion: Weigh 0.32g of LiF, add it into 4mL of concentrated hydrochloric acid (9mol / L), stir the mixture magnetically for 10min to fully dissolve LiF. Slowly add 0.2g of Ti in 10min 3 AlC 2 powder to avoid excessive initial temperature of the solution due to exothermic reaction. The reaction mixture was then magnetically stirred at 35 °C for 48 h. Wash the acidic product by centrifugation with deionized water, clear the supernatant of the water sample, add water and continue centrifugation until the pH value of the supernatant reaches about 6. The solid residue was dispersed in water, and nitrogen gas (N 2 ) under the condition of ultrasonication for 1h, followed by centrifugation, and the dark green supernatant was taken, and this was repeated three times to obtain Ti-containing 3 C 2 Nanosheet Ti ...

Embodiment 1

[0052] (1) Preparation of Ti 3 C 2 Dispersion: Weigh 0.32g of LiF, add it into 4mL of concentrated hydrochloric acid (9mol / L), stir the mixture magnetically for 10min to fully dissolve LiF. Slowly add 0.2g of Ti in 10min 3 AlC 2 powder to avoid excessive initial temperature of the solution due to exothermic reaction. The reaction mixture was then magnetically stirred at 35 °C for 48 h. The acidic product was washed by centrifugation with deionized water, the supernatant of the water sample was cleared, and water was added to continue centrifugation until the pH value of the supernatant reached 6. The solid residue was dispersed in water, and nitrogen gas (N 2 ) under the condition of ultrasonication for 1h, followed by centrifugation, and the dark green supernatant was taken, and this was repeated three times to obtain Ti-containing 3 C 2 Nanosheet Ti 3 C 2 Dispersions.

[0053] (2) Put Ti 3 C 2 The dispersion liquid was rotary evaporated to a concentration of 1.4%...

Embodiment 2

[0063] Adopt the method as described in embodiment 1 to prepare containing Ti 3 C 2 Nanosheet Ti 3 C 2 Dispersions.

[0064] Ti 3 C 2 The dispersion liquid was rotary evaporated to a concentration of 1.4%, and 20 g of the dispersion liquid was vacuum-filtered with a filter membrane of 450 nm to obtain Ti 3 C 2 The initial film, the resulting Ti 3 C 2 The initial film is torn off. Coat 4mol / L hydrazine hydrate on the ceramic sheet, and then apply Ti 3 C 2 The film is suspended on the hydrazine hydrate coating, covered with another ceramic sheet, put the whole into a closed container, keep warm in an oven at 80°C for 2 hours, take it out and place it in a fume hood to stand until the reaction residue volatilizes to obtain Hydrophobic Ti 3 C 2 film.

[0065] 0.03g hydrophobic Ti 3 C 2 The film was ultrasonically dispersed in 6mL water for 30min to obtain hydrophobic Ti 3 C 2 nanosheet dispersion. Uniformly disperse dopamine (DA) in the buffer solution of Tris h...

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Abstract

The invention discloses an antistatic leather finishing agent as well as a preparation method and application thereof, and belongs to the technical field of leather finishing. According to the preparation method, a hydrophobic Ti3C2 nanosheet is used, dopamine is self-polymerized to generate polydopamine to modify the surface of the hydrophobic Ti3C2 nanosheet, an amphiphilic Ti3C2 nanosheet is prepared, and the amphiphilic Ti3C2 nanosheet is introduced into a film-forming agent to be blended, so that the antistatic leather finishing agent is prepared. The method is simple in preparation process, can further reduce the cost, and is easy for large-scale production. In a film forming process of the antistatic leather finishing agent, the amphiphilic Ti3C2 nanosheet moves towards the upper surface along with evaporation of water to form a self-layering structure, so that the surface resistivity of leather can be effectively reduced when the content of fillers is relatively low, a coatingwith good antistatic performance and excellent mechanical performance can be obtained, and the defect that the mechanical property of the composite material is reduced due to excessive fillers is avoided. Therefore, the antistatic leather finishing agent has great application potential in the fields of electrician gloves, flexible electronic devices and the like.

Description

technical field [0001] The invention belongs to the technical field of leather finishing, and relates to an antistatic leather finishing agent and a preparation method and application thereof. Background technique [0002] In daily life, due to reasons such as dry air, many materials are prone to static electricity accumulation during use, causing problems such as dust collection, electric shock, and even vicious accidents. Therefore, the problem of static electricity needs to be solved urgently. Leather finishing is a very important process in the leather manufacturing process. Leather finishing agent can not only cover leather defects, protect leather, improve leather performance, and make leather more beautiful, but also modify it to prepare functional leather finishing agent to endow leather with special antistatic function, which can be used for electrician's gloves, belt Patient clothing with a pacemaker, etc. It has been found that currently commonly used leather fi...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D101/18C09D189/00C09D5/24C14C11/00
CPCC08K2201/011C09D5/24C09D101/18C09D175/04C09D189/00C14C11/003C14C11/006C08K9/08C08K3/14
Inventor 马建中潘朝莹张文博卫林峰石建丽
Owner SHAANXI UNIV OF SCI & TECH
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