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Method for preparing easy-to-disperse waterborne bismuth oxychloride powder and bismuth oxychloride pearlescent slurry through ultrasonic reaction

A bismuth oxychloride and easy-to-dispersion technology, which is applied in chemical instruments and methods, inorganic chemistry, bismuth compounds, etc., can solve the problems of poor dispersion and easy aggregation, complicated process, and uneven particle size distribution, so as to achieve the goal of not easy to aggregate, and the product Effect of high purity and improved crystal weather resistance

Pending Publication Date: 2019-05-14
东阳市康龙工艺材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a water-based bismuth oxychloride that is easily dispersible prepared by ultrasonic reaction, aiming at the problems that the particle size distribution of the bismuth oxychloride product obtained by the current preparation method is not uniform, the dispersion is poor, it is easy to agglomerate, and the process is relatively complicated. The method of powder and bismuth oxychloride pearl paste

Method used

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  • Method for preparing easy-to-disperse waterborne bismuth oxychloride powder and bismuth oxychloride pearlescent slurry through ultrasonic reaction
  • Method for preparing easy-to-disperse waterborne bismuth oxychloride powder and bismuth oxychloride pearlescent slurry through ultrasonic reaction

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Embodiment 1

[0031] Take 20L mass concentration of 15% bismuth nitrate aqueous solution, add 1L mass concentration of 15% dilute hydrochloric acid and 15% sodium chloride solution to obtain solution A; add 30L deionized water in a 50L reaction kettle to Dilute hydrochloric acid with a mass concentration of 15% adjusts the pH to 4.0, heats up to 60°C, and uses 30kHz ultrasonic irradiation; adds 30ml of nano-silica dispersion liquid with a mass concentration of 20% in the reactor; Add dropwise step (1) gained solution A, feed rate 0.12L / h, react 10 minutes; Adjust the feed rate that adds step (1) gained solution A in the reactor to be 0.56L / h, react 20 minutes; Adjust feed again The rate is 1.12L / h, react for 40 minutes; then adjust the feeding rate to 1.6L / h, react for 60 minutes; then adjust the feeding rate to 2.8L / h and react for 90 minutes; then adjust the feeding rate to 4.0L / h and react for 120 minutes Keep the reaction temperature at 60°C during the above reaction process, and use 30...

Embodiment 2

[0033] Take 20L mass concentration of 13% bismuth nitrate aqueous solution, add 1L mass concentration of 15% dilute hydrochloric acid and 15% sodium chloride solution to obtain solution A; add 30L deionized water in a 50L reaction kettle to Dilute hydrochloric acid with a mass concentration of 15% adjusts the pH to 4.0, heats up to 60°C, and uses 30kHz ultrasonic irradiation; adds 30ml of nano-silica dispersion liquid with a mass concentration of 20% in the reactor; Add step (1) gained solution A dropwise, feed rate 0.1L / h, react 15 minutes; Adjust the feed rate that adds step (1) gained solution A in the reactor to be 0.5L / h, react 30 minutes; Adjust feed again The rate is 1L / h, react for 40 minutes; then adjust the feeding rate to 1.5L / h, react for 65 minutes; then adjust the feeding rate to 2.5L / h and react for 95 minutes; then adjust the feeding rate to 3.8L / h and react for 130 minutes; Keep the reaction temperature at 58°C during the above reaction process, and use 35kHz ...

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Abstract

The invention discloses a method for preparing easy-to-disperse waterborne bismuth oxychloride powder and bismuth oxychloride pearlescent slurry through ultrasonic reaction. The method includes following steps: (1), taking an inorganic salt water solution of bismuth, and adding diluted hydrochloric acid and a sodium chloride solution of 10-20% in mass concentration to obtain a solution A; (2), adding deionized water into a reaction kettle, using diluted hydrochloric acid to adjust pH, heating, and performing ultrasonic irradiation; (3), adding nano silicon dioxide dispersion liquid into the reaction kettle; (4), dropwise adding the solution A obtained in the step (1) into the reaction kettle, and adjusting charging rate and reaction time; (5), adding a cerium nitrated solution, and increasing ultrasonic irradiation power; (6), filtering reaction liquid obtained in the step (5), using deionized water to wash obtained solid, and drying to obtain the easy-to-disperse waterborne bismuth oxychloride powder. The method has the advantages that raw materials are low in cost and easy to get, process operation is simple, and obtained bismuth oxychloride is uniform in grain size distribution,high in dispersity and weatherability and resistant to ultraviolet.

Description

technical field [0001] The invention relates to a method for synthesizing bismuth oxychloride pearlescent pigment, in particular to a method for preparing easily dispersible water-based bismuth oxychloride powder and bismuth oxychloride pearlescent slurry by ultrasonic reaction. Background technique [0002] Bismuth oxychloride (BiOCl) is a new type of environmentally friendly pearlescent material, non-toxic, with unique surface adhesion properties and smoothness. Its position in pearlescent pigments is second only to mica titanium pearlescent pigments, and is widely used in cosmetics production, automotive coatings and the manufacture of pearlescent plastic films. Compared with mica titanium pearlescent pigments, bismuth oxychloride not only has pearl luster, but also has an extremely delicate mercerizing effect that mica titanium pearlescent pigments do not have. [0003] The research on the preparation of pearlescent bismuth oxychloride is only a matter of recent decades...

Claims

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Application Information

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IPC IPC(8): C09C1/00C09C3/06C01G29/00
Inventor 周美秀
Owner 东阳市康龙工艺材料有限公司
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