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Method for preparing white rodlike conductive material by taking attapulgite as template

A technology of attapulgite and conductive materials, which is applied in the direction of circuits, electrical components, oxide conductors, etc. It can solve the problems of aggravating the agglomeration of attapulgite, affecting the use effect of products, and limiting the use range, so as to improve uniformity and firmness performance, consumption reduction, and energy saving effects

Active Publication Date: 2020-08-25
江苏纳欧新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent (ZL200610161681.5) uses attapulgite as a nucleus, and coats antimony-doped tin dioxide on its surface to prepare conductive attapulgite, but the color of the product is dark gray, and the whiteness is below 50, which severely limits its scope of use
In addition, in order to improve the thermal stability of attapulgite, there are drying and heat treatment steps before and after coating, which increases energy consumption on the one hand, and aggravates the degree of agglomeration of attapulgite on the other hand, affecting the use effect of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1), coated aluminum phosphate: add 50 kg of attapulgite to 950 kg of deionized water to prepare a suspension with a concentration of 5% by mass, and add it to the suspension while stirring at 50°C 1.0mol·L -1 49.2 liters of phosphoric acid solution and 0.8mol·L -1 Add 61.5 liters of sodium metaaluminate solution, maintain the pH value to 8.5, and continue stirring for 10 minutes after adding the solution. Raise the temperature to 80°C, use 0.6mol·L -1 The hydrochloric acid solution adjusts the pH value to be equal to 4.0, and continues to insulate and stir for 30 minutes. Filtrate and wash until the conductivity of the filtrate reaches 235 μS / cm to obtain an attapulgite / aluminum phosphate filter cake.

[0022] (2), coated antimony-doped tin oxide: redisperse the attapulgite / aluminum phosphate filter cake obtained in step (1) in water to make a suspension with a concentration of 8% by mass, keep the temperature at 60°C, and With continuous stirring, add 1.0mol·L -1...

Embodiment 2

[0026] (1) Coated aluminum phosphate: Add 100 kg of attapulgite to 900 kg of deionized water to prepare a suspension with a concentration of 10% by mass. At 30°C, while stirring, add 0.3mol·L -1 Phosphoric acid solution of 218.7 liters and 0.2mol L -1 328 liters of sodium metaaluminate solution, maintained to a pH value of 10.0, after the solution was added, continued to stir for 20 minutes. Raise the temperature to 90°C, use 0.2mol·L -1 The hydrochloric acid solution adjusts the pH value to be equal to 6.0, and continues to insulate and stir for 50 minutes. Filter and wash until the conductivity of the filtrate is 188 μS / cm to obtain an attapulgite / aluminum phosphate filter cake.

[0027] (2), coated antimony-doped tin oxide: redisperse the attapulgite / aluminum phosphate filter cake obtained in step (1) in water to make a suspension with a concentration of 10% by mass, keep the temperature at 75°C, and Under constant stirring, add 0.4mol·L -1 Tin tetrachloride, 0.06mol·L...

Embodiment 3

[0031] (1), coated aluminum phosphate: add 80 kg of attapulgite to 920 kg of deionized water to prepare a suspension with a concentration of 8% by mass, and add it to the suspension while stirring at 40°C 0.5mol·L -1 Phosphoric acid solution of 131.2 liters and 0.4mol L -1 164 liters of sodium metaaluminate solution, maintained to a pH value of 9.0, after the solution was added, continued to stir for 15 minutes. Raise the temperature to 85°C, use 0.5mol·L-1 The hydrochloric acid solution adjusts the pH value to be equal to 5.0, and continues to insulate and stir for 40 minutes. Filter and wash until the conductivity of the filtrate is 158 μS / cm to obtain an attapulgite / aluminum phosphate filter cake.

[0032] (2), coated antimony-doped tin oxide: redisperse the attapulgite / aluminum phosphate filter cake obtained in step (1) in water to make a suspension with a mass percentage concentration of 15%, keep the temperature at 70°C, and Under constant stirring, add 0.5mol·L -1 T...

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Abstract

The invention belongs to the technical field of inorganic functional materials and particularly relates to a method for preparing a white rodlike conductive material by taking attapulgite as a template. The attapulgite is used as a core body, and the surface is sequentially coated with aluminum phosphate, antimony-doped tin oxide and indium-doped tin oxide to prepare the rodlike conductive material with good conductivity and high whiteness. The surface of the attapulgite is coated with the aluminum phosphate, so that the thermal stability of the attapulgite is improved; the aluminum phosphatehas high cohesiveness, so that the uniformity and firmness of a conductive layer on the surface of the attapulgite are improved, the conductive layer is uniformly, continuously and firmly attached tothe surface of the attapulgite, and the conductive layer on the surface of the attapulgite can be prevented from falling off; the antimony-doped tin oxide is blue, the indium-doped tin oxide is faintyellow, and the conductive material with excellent conductivity and high whiteness is prepared through layered coating, color matching and combined doping.

Description

technical field [0001] The invention belongs to the technical field of inorganic functional materials, and in particular relates to a method for preparing a white rod-shaped conductive material using attapulgite as a template. Background technique [0002] Attapulgite clay (abbreviated as attapulgite) is a magnesium-rich silicate clay mineral with a chain layer structure. Attapulgite crystals are rod-shaped: 30-50nm in diameter and 0.5-5μm in length. It is a natural one-dimensional nanomaterial. . Chinese patent (ZL200610161681.5) uses attapulgite as a nucleus, and coats antimony-doped tin dioxide on its surface to prepare conductive attapulgite, but the color of the product is dark gray, and the whiteness is below 50, which severely limits its scope of use. In addition, in order to improve the thermal stability of attapulgite, there are drying and heat treatment steps before and after coating, which increases energy consumption on the one hand, and aggravates the degree o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/00H01B1/08
CPCH01B1/08H01B13/00
Inventor 姚鹏程于佳叶里祥王灿王亮左士祥姚超
Owner 江苏纳欧新材料有限公司