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Method for preparing composite conductive filler by using fine coal gasification slag and prepared filler

A composite conductive and coal gasification technology, which is used in the preparation of composite conductive fillers and in the field of composite conductive fillers, can solve the problems of the mechanical properties of polymer materials, the peeling of composite materials, and the irregular shape of powder, and achieve stable physical and chemical properties. The effect of firm coverage and low density

Pending Publication Date: 2022-04-12
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

People such as Yuan Guoliang prepared silicon oxide composite conductive powder [CN 108034934 A] by copper plating method, people such as Zhang Haiyan prepared silver-plated Fe 3 o 4 Conductive powder [CN 101012553 A], but these powders are irregular in shape, which has a great influence on the mechanical properties of polymer materials, and the composite material also has the risk of peeling off

Method used

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  • Method for preparing composite conductive filler by using fine coal gasification slag and prepared filler
  • Method for preparing composite conductive filler by using fine coal gasification slag and prepared filler
  • Method for preparing composite conductive filler by using fine coal gasification slag and prepared filler

Examples

Experimental program
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Effect test

Embodiment 1

[0040] 1. Take 500 grams of dried coal gasification fine slag, and after calcination at 700°C for 3 hours in a muffle furnace to remove carbon, dissolve it in 15% hydrochloric acid solution at a solid-to-liquid ratio (g / ml) of 1:5 Leach in medium acid for 5 hours, then filter with suction, wash and dry, pass through a 200-mesh standard sieve, and the silicon-aluminum microbead powder under the sieve is ready for use. The specific surface area of ​​the powder is 76.41m 2 / g, a large number of pores appear in the microbeads, and the powder density becomes smaller.

[0041] 2. Take 5 g of the sieved silica-alumina glass microbead powder and place it in 100 ml of distilled water, stir in a water bath at 30°C to form a suspension, and slowly add the doped SbCl 3 0.1mol / L of SnCl 4 4H 2 9 ml of multi-ion hydrochloric acid mixed solution of O (the molar ratio of Sn / Sb is 5:1), and at the same time, dropwise add 20% NaOH solution to keep the pH of the solution in the range of 1-1.5,...

Embodiment 2

[0045] 1. Take 500 grams of dried coal gasification fine slag, and after calcination at 700°C for 3 hours in a muffle furnace to remove carbon, dissolve it in 20% hydrochloric acid solution at a solid-to-liquid ratio (g / ml) of 1:4 Leach in medium acid for 4 hours, then filter with suction, wash and dry, pass through a 200-mesh standard sieve, and the silica-alumina microbead powder under the sieve is ready for use. The specific surface area of ​​the powder is 119.52m 2 / g, the number of pores in the microbeads increases continuously.

[0046] 2. Take 5 g of the sieved silica-alumina glass microbead powder and place it in 100 ml of distilled water, stir in a water bath at 50°C to form a suspension, and slowly add the doped SbCl 3 0.1mol / L of SnCl 4 4H 2 O hydrochloric acid multi-ion mixed solution 18ml (the molar ratio of Sn / Sb is 8: 1), while adding 20% ​​NaOH solution dropwise to keep the pH of the solution in the range of 2-2.5, stir for 2.5h after the titration is complet...

Embodiment 3

[0050] 1. Take 500 grams of dried coal gasification fine slag, and after calcination at 700°C for 3 hours in a muffle furnace to remove carbon, dissolve it in 30% hydrochloric acid solution at a solid-to-liquid ratio (g / ml) of 1:4 Leach in medium acid for 4 hours, then suction filter, wash and dry, pass through a 200-mesh standard sieve, and the silicon-aluminum microbead powder under the sieve is ready for use. The specific surface area of ​​the powder is 158.57m 2 / g, the porosity reaches the maximum, the powder is loose and easy to fly out, and the density drops obviously.

[0051] 2. Take 5 g of the sieved silica-alumina glass microbead powder and place it in 100 ml of distilled water, stir in a water bath at 80°C to form a suspension, and slowly add the doped SbCl 3 0.1mol / L of SnCl 4 4H 2 O hydrochloric acid multi-ion mixed solution 22.5ml (the molar ratio of Sn / Sb is 7:1), while adding dropwise 20% NaOH solution to keep the pH of the solution in the range of 1-1.5, st...

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Abstract

The invention discloses a method for preparing a composite conductive filler by using fine coal gasification slag and the prepared composite conductive filler, and the method comprises the following steps: (1) roasting the fine coal gasification slag to remove carbon, carrying out hydrochloric acid dissolution treatment, and carrying out solid-liquid separation, washing and drying to obtain porous siliceous microbeads generated by the fine coal gasification slag; (2) putting the porous siliceous microbeads prepared in the step (1) into distilled water, stirring to form a suspension, then continuously stirring, and gradually adding a multi-ion mixed solution of SnCl4.H2O doped with SbCl3 into the suspension according to the addition amount that the mass of a precipitation product generated by hydrolysis of chlorine salt of Sn and Sb reaches 5-30% of the mass of the porous siliceous microbeads; and (3) after the mixed solution is added, continuously stirring to enable the hydrolysis reaction to be sufficient, then carrying out solid-liquid separation on the suspension, washing to remove Cl ions in a solid phase, drying and calcining to obtain the product. The prepared composite conductive powder is light in color and low in cost, can be widely used as conductive filler, and has dual significance in resources and environments.

Description

technical field [0001] The invention relates to the preparation of a composite conductive filler using coal-based solid waste as a matrix, in particular to a method for preparing a composite conductive filler using coal gasification fine slag and the prepared composite conductive filler, which belongs to the conductive material technology field. Background technique [0002] In recent years, with the deepening of people's understanding of electrostatic hazards, anti-static materials have played an increasingly important role. Anti-static materials are to take a series of measures to prevent electrostatic discharge from causing harm to products and personal safety by reducing or eliminating the frictional charge generated during the handling and use of products, so as to achieve the purpose of protection. At present, anti-static materials have been widely used in many fields such as microelectronics, electrical products, military security, and aerospace. [0003] Conductive...

Claims

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Application Information

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IPC IPC(8): B09B3/00B09B3/70B09B3/40B09B3/80C03C12/00C01G19/02B09B101/55
CPCY02W30/82
Inventor 魏存弟张今壹蒋引珊琚安坤
Owner JILIN UNIV
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