Application of electrochemical method in pigment hydrolysis coating

An electrochemical method and electrochemical technology, applied in the electrolysis process, electrolysis components, electrodes, etc., can solve the problem of high production cost of pigment hydrolysis coating, and achieve the effect of solving the uneven distribution of pH and temperature, saving cost and low cost.

Inactive Publication Date: 2018-03-06
GUANGXI CHESIR PEARL MATERIAL CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide an application of electrochemical method in pigment hydrolysis coating, which can solve the problem of high production cost of pigment hydrolysis coating

Method used

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  • Application of electrochemical method in pigment hydrolysis coating

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Embodiment

[0020] The preparation method of white matt flake nucleated pigment adopts such as figure 1 For the equipment shown, 35g of natural mica powder with a particle size of D50=4μm is put into 1L of deionized water to make a suspension, put it into the cathode chamber 3 of the electrolytic tank 1, start the agitator 8, and put in the grain regulator polyethylene Diol 0.5g, continue stirring and heating to 65°C, adjust the current size of the DC power supply 6, adjust the pH value of the suspension to 1.5, then add 4ml of SnCl with a concentration of 160g / l from the infusion tube 10 4 ·5H 2 O solution, and in the process by adjusting the current size of the DC power supply 6 to keep its pH value constant; when the SnCl 4 ·5H 2 After the addition of the O solution, continue stirring at constant temperature for 15 minutes; adjust the current of the DC power supply 6 to adjust the pH value of the suspension to 1.8-2.0, and then add 390ml of TiCl with a concentration of 2mol / l from th...

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Abstract

The invention discloses application of an electrochemical method in pigment hydrolysis coating and relates to the technical field of pigment production. When the electrochemical method disclosed by the invention is applied to the pigment hydrolysis coating, a pigment hydrolysis coating reactor is adopted; in the reaction process, high-corrosivity alkali liquor is not used, so that the corrosion toa reaction device is avoided, and safety and environmental protection are realized; in the reaction process, the reactor is electrified by using a voltage-stabilizing direct current power supply; hydrolysate is continuously consumed by using a cathodic reaction to generate H<+>; the consumption rate of H<+> is controlled by using a method of adjusting current of the direct current power supply instead of a traditional alkali neutralization method for adjusting the flow of the alkali liquor, so that the consumption rate of H<+> is consistent with the hydrolysis rate; and the reaction process is relatively-mild and controllable, the requirements on the reactor are low, and the construction cost of the pigment hydrolysis coating reactor is low.

Description

technical field [0001] The invention relates to the technical field of pigment production, in particular to an electrochemical method in pigment hydrolysis coating [0002] application. Background technique [0003] In the production process of pearlescent pigments, it is necessary to coat a layer of film with a large difference in refractive index from the base material on the surface of the base material. This process plays a key role in the quality of the pigment. Cause a great impact, thereby affecting the quality of the pigment. Therefore, it has high requirements on the control of the pH value, temperature and stirring effect of the hydrolyzed solution. [0004] The conventional pigment hydrolysis coating process is usually completed by some strong acid and weak alkali salt hydrolysis precipitation coating. Strong acid and weak base salt hydrolysis is usually accompanied by H + Due to the rapid and violent acid-base neutralization reaction, the existing reactor bas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D17/00C25D17/02C25D17/10C25D21/10C25D7/00
Inventor 孙松苏尔田郑世展周方超熊建文陈中清
Owner GUANGXI CHESIR PEARL MATERIAL CO LTD
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