Integrated preparation technology for attapulgite rod-like crystal beam dissociation and conduction composite material

A conductive composite material and a preparation process technology, which are applied in the field of deep processing and high-value utilization of clay minerals, can solve problems such as affecting the application performance of attapulgite nanostructure properties, reducing aspect ratio, and damaging attapulgite crystals.

Active Publication Date: 2017-12-01
CHANGZHOU UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, most of the natural attapulgite rod crystals exist in the form of bird's nest or woodpile-like aggregates, which has become a key technical bottleneck restricting the development of the attapulgite industry and even the fibrous conductive material industry.
[0004] For this reason, a series of dissociation studies on attapulgite rod crystal bundles were carried out by using traditional treatment methods such as high-speed stirring, ultrasonic, and milling, but the results showed that traditional methods could only partially dissociate rod crystal bundles, and at the same time, damage Palygorskite crystals reduce their inherent aspect ratio, which greatly affects the nanostructure characteristics of attapulgite and its application performance

Method used

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  • Integrated preparation technology for attapulgite rod-like crystal beam dissociation and conduction composite material
  • Integrated preparation technology for attapulgite rod-like crystal beam dissociation and conduction composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Fully disperse 1.0 kg of natural attapulgite clay into 6.7 kg of deionized water, then add 0.3 kg of pyrrole monomer to it, and immerse it for 5 days after fully dispersing to obtain a thick composite slurry of attapulgite and pyrrole monomer body;

[0023] (2) adding 1.7 liters of sulfuric acid solution with molar concentration of 12.0 mol / liter to the composite slurry obtained in step (1), after 12 days of immersion reaction, ultrasonic dispersion for 30 minutes, filtering, washing filter cake washing solution pH value is 6 and drying to obtain attapulgite / polypyrrole composite material. Its volume resistivity was measured to be 2.7Ω·cm.

Embodiment 2

[0025] (1) Fully disperse 1.0 kg of natural attapulgite clay into 3.3 kg of deionized water, then add 1.0 kg of aniline monomer to it, fully disperse and soak for 10 days to obtain a thick composite slurry of attapulgite and aniline monomer body;

[0026] (2) adding 5.5 liters of hydrochloric acid solution whose molar concentration is 5.0 mol / liter to the composite slurry obtained in step (1), after immersion reaction for 6 days, ultrasonic dispersion for 60 minutes, filtering, washing filter cake washing solution pH value is 7 and drying to obtain attapulgite / polyaniline composite material. Its volume resistivity was measured to be 0.9Ω·cm.

Embodiment 3

[0028] (1) Fully disperse 1.0 kg of natural attapulgite clay into 4.5 kg of deionized water, then add 0.65 kg of pyrrole monomer to it, and immerse it for 7.5 days after fully dispersing to obtain a thick composite slurry of attapulgite and pyrrole monomer body;

[0029] (2) adding 2.8 liters of nitric acid solution with a molar concentration of 8.5 mol / liter to the composite slurry obtained in step (1), after immersing for 9 days, ultrasonically dispersing for 45 minutes, filtering and washing the filter cake washing solution with a pH of 6.5 and drying to obtain attapulgite / polypyrrole composite material. Its volume resistivity was measured to be 1.5Ω·cm.

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Abstract

The invention belongs to the field of the clay mineral deep processing and high-valued utilization, and particularly relates to an integrated preparation technology for an attapulgite rod-like crystal beam dissociation and conduction composite material. The preparation technology comprises the following steps: dispersing natural attapulgite clay in deionized water, adding a conductive polymer monomer and dipping for a long time, adding inorganic acid solution, continuously executing the dipping reaction, ultrasonic-dispersing, filtering, washing a filter cake and drying, to obtain the attapulgite / conducting polymer composite material.

Description

technical field [0001] The invention belongs to the field of deep processing and high-value utilization of clay minerals, in particular to an attapulgite rod crystal beam dissociation and an integrated preparation process of a conductive composite material. Background technique [0002] Fibrous conductive materials have been widely used in plastics, coatings (layers) and adhesives and other fields. Compared with spherical conductive particle materials, they have the advantages of less dosage and better reinforcement performance. [0003] Attapulgite is a kind of silicate clay mineral with fibrous morphology and rich in magnesium, aluminum and iron (III), manganese and other metal ions. It is the core body of fibrous conductive material, which is abundant in my country and low in price. However, most of the natural attapulgite rod crystals exist in the form of bird's nest or firewood-shaped aggregates, which has become a key technical bottleneck restricting the development of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/02C08G73/06C08K3/34C08L79/02C08L79/04
CPCC08G73/0266C08G73/0611C08K3/346C08L79/02C08L79/04
Inventor 姚超左士祥陈群刘文杰李霞章卓仲标周铭郭小平钱大庆
Owner CHANGZHOU UNIV
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