Negative ion dry powder surface modifying method

A surface modification, negative ion technology, applied in the direction of aluminum silicate, silicate, etc., can solve the problems of waste, easy to cause pollution, inconvenient operation, etc., and achieve the effect of low production cost

Active Publication Date: 2016-01-27
佛山市奥朗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The solution of this process method is mainly toluene, but toluene is not environmentally friendly, and it is easy to cause pollution; 2. Take a certain amount of tourmaline powder, directly add stearic acid, and perform surface modification in a heat mixer. The actual operation of the heat mixer is inconvenient. When conducting process research, a large amount of raw materials are used, which is easy to cause waste; 3. After mixing the negative ion powder with water, put it into a self-made stirring mill for grinding. After the grinding is completed, add stearic acid Sodium continues to grind; the disadvantage of this method is that there is no corresponding supporting equipment, and it is still in the experimental stage, and the safety of the self-made stirring mill is not guaranteed

Method used

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  • Negative ion dry powder surface modifying method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In the present embodiment, the method for surface modification of negative ion dry powder, its specific steps are as follows:

[0026] a. Add 5g of surfactant to 100g of water, stir under electric power, the stirring speed is 800 rpm, heat to reaction temperature 75°C, then add 15g of 1000 mesh negative ion powder to obtain a mixed solution;

[0027] b. The mixed solution is subjected to constant temperature ultrasonic treatment for 15 minutes in an ultrasonic cleaning machine, and the frequency used by the ultrasonic cleaning machine is 25KHz;

[0028] c. Continue the constant temperature electric stirring reaction for 0.5h, and the stirring speed is 1000 rpm;

[0029] d. After the reaction is completed, the mixed solution is filtered, and the solid is taken, dried at 100° C. to constant weight, pulverized, and passed through a 200-mesh sieve.

[0030] Among them, the surfactant is a mixed solution formed by mixing Span 20, silicone oil and silicone oil ester, stearic...

Embodiment 2

[0034] In the present embodiment, the method for surface modification of negative ion dry powder, its specific steps are as follows:

[0035] a. Add 6g of surfactant to 100g of water, stir under electric power at a stirring speed of 1200 rpm, heat to a reaction temperature of 80°C, then add 25g of 1000-mesh negative ion powder to obtain a mixed solution;

[0036] b. Ultrasonic treatment of the mixture at a constant temperature for 20 minutes in an ultrasonic cleaning machine, the frequency used by the ultrasonic cleaning machine is 30KHz;

[0037] c. Continue the constant temperature electric stirring reaction for 0.6h, and the stirring speed is 1200 rpm;

[0038] d. After the reaction is completed, the mixed solution is filtered, and the solid is taken, dried at 120° C. to constant weight, pulverized, and passed through a 400-mesh sieve.

[0039] Among them, the surfactant is a mixed solution formed by mixing Span 60, silicone oil and silicone oil ester, stearic acid and its...

Embodiment 3

[0042] In the present embodiment, the method for surface modification of negative ion dry powder, its specific steps are as follows:

[0043] a. Add 8g of surfactant to 100g of water, stir under electric power, the stirring speed is 1300 rpm, heat to reaction temperature 90°C, then add 50g of 3000 mesh negative ion powder to obtain a mixed solution;

[0044] b. Ultrasonic treatment of the mixture at a constant temperature for 25 minutes in an ultrasonic cleaning machine, the frequency used by the ultrasonic cleaning machine is 35KHz;

[0045] c. Continue the constant temperature electric stirring reaction for 0.8h, and the stirring speed is 1400 rpm;

[0046] d. After the reaction is completed, the mixed solution is filtered, and the solid is taken, dried at 130° C. to constant weight, pulverized, and passed through a 500-mesh sieve.

[0047] Among them, the surfactant is a mixed solution made of Span 80, silicone oil and silicone oil ester, stearic acid and its salt, higher ...

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Abstract

The invention discloses a negative ion dry powder surface modifying method. The method is characterized in that a surfactant is added into water, after being uniformly stirred, the surfactant is heated, and negative ion powder is added into the mixture to obtain mixed liquid; the mixed liquid is subjected to constant-temperature ultrasonic treatment or high-speed stirring in an ultrasonic cleaning machine, and after a constant-temperature stirring reaction and filtration are performed, the solid is taken to be dried, crushed and sieved. The negative ion powder modified by the method can be uniformly dispersed in oily liquid and can be applied to an organic material; the releasing amount of negative ions is not affected, a preparation method is simple and convenient, low in cost, environment-friendly and energy-saving.

Description

technical field [0001] The invention relates to the technical field of dry powder materials, in particular to a method for surface modification of negative ion dry powder. Background technique [0002] Negative ion powder is also called tourmaline powder, and tourmaline is the general name of tourmaline minerals. Negative ion powder has the characteristics of piezoelectricity and pyroelectricity. Its piezoelectricity shows that when the temperature and pressure change, it will release negative ions after a series of reaction processes, so that the air will be purified. The modification of negative ion powder refers to wrapping a layer of surfactant on the surface of negative ion powder. The unmodified negative ion powder is hydrophilic and oleophobic, while the modified negative ion powder becomes lipophilic and hydrophobic. The modified negative ion powder can be uniformly dispersed in oily liquid and applied to organic materials, and the release of negative ions is not af...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/26
Inventor 李艳莉尹诗
Owner 佛山市奥朗科技有限公司
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