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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AI-Extracted Technical Summary

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 powd...

Method used

The composite conductive filler that the present invention makes is added in the epoxy coating of WSR6101 model purchased by Nantong Xingchen Synthetic Materials Co., Ltd. (below the same), adding massfraction is 10%, in the magnetic stirrer of 200r/min Stir evenly in medium to prepare anti-static coatings, the compatibility of the two is good, and there is no phenomenon of bottom sinking and agglomeration.

The composite conductive filler that the present invention makes is added in the epoxy paint, adding massfraction is 10%, stirs and makes antistatic paint in the magnetic stirrer of 200r/min, both compatibility is better , no sinking and caking phenomenon.

The composite conductive filler that the present invention makes is added in the epoxy paint, adding massfraction is 5%, stirs and makes antistatic paint in the magnetic stirrer of 150r/min, both compatibility is better , no sinking and caking phenomenon.

The composite conductive filler that the ...

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.

Application Domain

Transportation and packagingSolid waste disposal +2

Technology Topic

SlagElectrically conductive +9

Image

Examples

Experimental program(5)
Comparison scheme(1)
Effect test(1)

Example Embodiment

[0039] Example 1

[0040] 1. Take 500 grams of dry gasified fine fountain after drying, after calcination of 3 hours in a muffle furnace, then remove carbon, a solid-liquid ratio (g / ml) of 1: 5 is 15% hydrochloric acid solution. His acid is extracted for 5 h, then filtrate, washed and dried, over 200 target quasi-screen, sieve the silicone microbead powder, the powder specific surface area is 76.41m 2 / g, there is a large number of pores in the microbead, and the powder density is small.

[0041] 2. After the sieve, the silicone glass bead powder 5g is placed in 100 mL of distilled water, and stirred in a water bath in 30 ° C to form a suspension, slowly dropped SBCl. 3 0.1mol / L SNCL 4 · 4h 2 The hydrochloric acid polyionic mixture was 9 ml (Sn / Sb molar ratio of 5: 1), and a 20% NaOH solution was added dropwise to the solution pH in the range of 1-1.5, and the titration was stirred after 1 h and stirred the hydrolysis reaction. .

[0042] 3. Wash the reaction after the reaction, remove the filtration, and eliminate the use of AGNO 3 The solution cannot detect CL in the filtrate - The presence. The filter residue was then dried at 80 ° C, and 1.5 h was calcined at 900 ° C, and the heating speed was 5 ° C / min. After slightly grinding, it was obtained, i.e., a composite conductive powder with a gasified fine watery microbeam is a matrix. The powder is a light pink, the coating ratio is 92%, and the coating layer is partially detached.

[0043] The composite conductive filler obtained by the present invention is added to the epoxy coating, and the addition mass fraction is 5%, and the mixture is stirred in the magnetic stirrer of 150 r / min to prepare an anti-static coating. The two compatibility is better, no depth Bottom block phenomenon.

Example Embodiment

[0044] Example 2

[0045] 1. Take 500 grams of dry gasified fountain after drying, after 700 ° C high temperature calcination of 3 hours in a muffle, a solid-liquid ratio (g / ml) of 1: 4 is 20% hydrochloric acid solution. Chinese acid is extracted for 4 h, then filtrate, washed and dried, over 200 target quasi-screen, sieve the silicone microbead powder, the powder specific surface area is 119.52m 2 / g, the number of pores in the microbeads is increasing.

[0046] 2. After the sieve, the silicone glass bead powder 5g is placed in 100 mL of distilled water, stirred in a water bath in 50 ° C to form a suspension, slowly dropped SBCL. 3 0.1mol / L SNCL 4 · 4h 2 The hydrochloric acid polyionic mixture was 18 mL (Sn / Sb molar ratio of 8: 1), and 20% of the NaOH solution was added dropwise to the solution pH in the range of 2-2.5, and the titration was stirred after 2.5 h to react full.

[0047] 3. Wash the reaction after the reaction, remove the filtration, and eliminate the use of AGNO 3 The solution cannot detect CL in the filtrate - The presence. The filter residue was then dried at 800 ° C for 2 h at 800 ° C, and the temperature was 8 ° C / min. After slightly grinding, the coal gasified porous silicon bead is a composite conductive powder which is a matrix, which is light gray, the coating ratio is 96%, and there is a small portion of the coating layer to fall off.

[0048] The composite conductive filler obtained by the present invention is added to the epoxy coating, and the amount of mass fraction is 7%, and the mixing of the anti-static coating is mixed in the magnetic agitator of 150 r / min, and the two compatibility is better. Bottom block phenomenon.

Example Embodiment

[0049] Example 3

[0050] 1. Take 500 grams of dry gasified fine fragments after drying, after 700 ° C high-temperature calcination of 3 hours in a muffle furnace, a solution of solid-liquid ratio (g / ml) of 1: 4 is 30% hydrochloric acid solution. Chinaic acid is extracted for 4 h, then filtrate, washed and dried, over 200 target quasi-screen, sieve the silicone microbead powder, the powder specific surface area is 158.57m 2 / g, the porosity reaches the maximum, the powder is loose and easy to fly, the density is significantly reduced.

[0051] 2. After the sieve, the silicone glass bead powder 5g is placed in 100 mL of distilled water, and stirred in a water bath in 80 ° C to form a suspension, slowly drop the SBCL. 3 0.1mol / L SNCL 4 · 4h 2 The hydrochloric acid polyionic mixture of hydrochloride (Sn / Sb is 7: 1), and a 20% NaOH solution is added dropwise to the solution pH in the range of 1-1.5, and the titration is stirred after 2.5 h. The reaction is sufficient.

[0052] 3. Wash the reaction after the reaction, remove the filtration, and eliminate the use of AGNO 3 The solution cannot detect CL in the filtrate - The presence. The filter residue was then dried at 80 ° C, calcined at 700 ° C for 1.5 h, and the heating speed was 5 ° C / min. After slightly grinding, the coal gasified fine silicon bead is a compound conductive powder which is a matrix, which is a grayish white, a coating ratio of 98%, and the coating layer is hardly detached.

[0053] The composite conductive filler obtained by the present invention is added to the epoxy coating, and the addition of a mass fraction is 10%, and the agitation is mixed in the magnetic stirrer of 200R / min, and the two compatibility is better, no depth. Bottom block phenomenon.

PUM

Property	Measurement	Unit
Specific surface area	76.41	m²/g
Specific surface area	119.52	m²/g
Specific surface area	158.57	m²/g

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Classification and recommendation of technical efficacy words

high whiteness
Light color

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

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

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Example Embodiment

Example Embodiment

Example Embodiment

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Description & Claims & Application Information

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