Conductive sericite powder preparation method

A technology of sericite powder and roasting is applied in the field of preparation of light-colored conductive sericite powder, which can solve problems such as no antistatic materials, and achieve the effects of wide distribution of raw material resources and high added value.

Active Publication Date: 2007-03-07
鹿寨七色珠光云母材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent 200410014116.7 discloses the preparation method of polyacrylate / sericite superabsorbent composite material, 02111494.3 reports two-component color polyurethane waterproof coating and its preparation method, and 03101007.0 discloses electric energy saving devices, which are mainly used as architectural coatings and electromagnetic Shielding materials, there is no report of sericite powder used for antistatic materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Roasting: select 100 kg of sericite powder with a thickness of 5 μm, and roast at a temperature of 550° C. for 4 hours.

[0024] (2) surface activation treatment: with the sericite powder of above-mentioned roasting, with the hydrochloric acid aqueous solution of 2~5wt%, by sericite powder: hydrochloric acid solution=1: 3 weight ratio mix slurry, reacted 4 hours in temperature 60 ℃, filter, Wash with water until pH = 6-7; then prepare slurry according to the weight ratio of sericite powder: water = 1: 3, adjust to pH = 10-11 with alkali, react at a temperature of 60°C for 4 hours, filter, and wash with water until pH = Steps 7-8, obtaining surface-activated sericite powder.

[0025] (3) Chemical coating:

[0026] Preparation of group A solution

[0027] SnCl 4 5kg, SbCl 3 0.3kg, AlCl 3 0.05kg, deionized water 95kg, made into A group solution.

[0028] Preparation of group B solution

[0029] Make NaOH into 5-10wt% aqueous solution.

[0030] Use deionized wat...

Embodiment 2

[0033] (1) Roasting: select 100 kg of sericite powder with a diameter of 40 μm, and roast at a temperature of 650° C. for 3 hours.

[0034] (2) surface activation treatment: with the sericite powder of above-mentioned roasting, with the hydrochloric acid aqueous solution of 4wt%, by sericite powder: hydrochloric acid solution=1: 4 weight ratio mix slurry, react 3 hours in temperature 70 ℃, filter, water washing to pH=6~7; then prepare the slurry according to the weight ratio of sericite powder: water=1:4, adjust the pH to 10~11.5 with alkali, heat up to 70°C and react for 3 hours, filter and wash with water until pH=7~ 8. Obtain surface-activated sericite powder.

[0035] (3) Chemical coating:

[0036] Preparation of group A solution

[0037] SnCl 4 12kg, SbCl 3 1kg, AlCl 3 0.25kg, deionized water 87kg, made into group A solution.

[0038] Preparation of group B solution

[0039] NaOH was made into 8wt% aqueous solution.

[0040] Use deionized water according to serici...

Embodiment 3

[0043] (1) Roasting: select 100 kg of sericite powder with a diameter of 80 μm, and roast at a temperature of 750° C. for 2 hours.

[0044] (2) surface activation treatment: with the sericite powder of above-mentioned roasting, with the hydrochloric acid aqueous solution of 5wt%, by sericite powder: hydrochloric acid solution=1: 5 weight ratio mix slurry, react 2 hours at 80 ℃ of temperature, filter, water washing to pH=6~7; then prepare the slurry according to the weight ratio of sericite powder: water=1:5, adjust to pH=10~10.5 with alkali, react at a temperature of 80°C for 2 hours, filter and wash with water until pH=7~ 8. Obtain surface-activated sericite powder.

[0045] (3) Chemical coating:

[0046] Preparation of group A solution

[0047] SnCl 4 25kg, SbCl 3 2.0kg, AlCl 3 0.5kg, deionized water 73kg, dubbed A group solution.

[0048] Preparation of group B solution

[0049] Make NaOH into 10wt% aqueous solution.

[0050] Use deionized water according to sericit...

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Abstract

The preparation method for conductive sericite powder comprises: calcining 100 weight shares sericite powder with 5~80mu m particle size at 550~750DEG C for 2~4h, taking surface-active treatment with acid and base; performing chemical envelope: mixing liquid by 5~25 SnCl, 0.3~2.0SbCl3, 0.05~0.5 A1Cl3 and 73~94 deionized water, preparing slurry by sericite powder and water with weight ratio as 1:3~5; dripping said liquid into slurry with speed of 0.5~5L / h.kg(sericite) and 5~10wt% NaOH solution to keep pH within 1~5; reacting for 2~8h at 40~80Deg; filtering, cleaning to pH is 6~7; drying at 100~150Deg, calcining for 2~4h at 550~750Deg, and obtaining the pale product.

Description

1. Technical field [0001] The invention relates to a preparation method of light-colored conductive sericite powder, which belongs to the field of antistatic and antiultraviolet functional materials. 2. Background technology [0002] As a functional material, conductive powder is mainly used in polymer materials such as plastics, rubber, and coatings in the form of fillers to make it conductive, antistatic, and electromagnetic wave shielding. Traditional conductive fillers are divided into antistatic agents, carbon series and metal powder series. Antistatic agents are easy to migrate and fail, and are generally only used in temporary antistatic places within 6 months; carbon-based powders are dark in color, difficult to polish, and easy to pollute the working environment; aluminum, copper, and nickel are easy to oxidize and fail. Gold and silver are expensive and their use is limited. In recent years, all countries in the world have devoted themselves to the development an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B14/20C04B20/02C04B20/04
Inventor 杨伦全
Owner 鹿寨七色珠光云母材料有限公司
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