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Fluoro phlogopite pearlescent pigment and method for making same

A technology of fluorine phlogopite and pearlescent pigments, which is applied in the field of decorative pigments, and can solve the problems of affecting glaze and transparent enamel, not easy to coat non-metallic particles, and discontinuity

Inactive Publication Date: 2005-09-07
刘国忠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, it involves flake substrates coated with metal oxide layers, especially mica or mica-based color luster pigments coated with metal oxides. It has been used for many years, and there are many patent documents in the United States, Germany and other countries. It is recorded that the mica mentioned is artificially synthesized or natural mica. Due to natural defects such as mineral and air inclusions, mineral dirt, irregular crystallization, ripples or breaks, and cracks in natural mica, a discontinuous coating may be formed, which is seriously It affects the luster and color of pearlescent pigments and other product quality. At the same time, the heat resistance of natural mica is low, which will affect the glaze and transparent enamel.
Synthetic mica, such as fluorophlogopite, is a typical layered silicate structure, colorless and transparent plate-shaped crystals, and its cleavage performance is completely comparable to that of natural mica, but its hardness is slightly higher than that of natural mica, and its heat resistance is higher than that of natural mica. Mica is high, and fluorine phlogopite will not sinter and melt at 1100 °C, and it can also maintain its transparency and original luster. It is an ideal material, but due to its high hardness, the thickness of the processed powder flakes is relatively small. , it is not easy to make non-metallic particles adhere and deposit on the mica flakes when making pearlescent pigments, so it needs to be improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Fluorphlogopite powder 10-60 microns 20g, TiO 2 (Content 186g / L) solution 35mL, make deionized water and fluorphlogopite powder into 800mL suspension, set temperature 72℃±2℃, PH=2.5±0.3. Stir in the beaker to raise the temperature to a constant value, and add TiO2 dropwise at a flow rate of 10 mL per hour. 2 solution, and then dropwise add NaOH solution with a concentration of 10% to keep the pH value stable, and add TiO after 3h 30min 2 After the solution was kept at a constant temperature for 30 minutes, it was filtered and washed until PH = 6.8, then dried by suction, and then burned at a constant temperature of 950°C for 1 hour to become a silvery pearlescent pigment with a weight of 25.8g.

Embodiment 2

[0017] Fluorphlogopite powder 10-60 microns 20g, TiO 2 (Content 186g / L) solution 56mL, make 800mL suspension with deionized water and powder, set temperature 76℃±2℃, PH=2.5±0.3. Add TiO dropwise at a flow rate of 12 mL per hour 2 Add NaOH (concentration 10%) to the solution under stirring conditions to keep the temperature constant to keep the pH value stable. After 4 hours and 50 minutes, the solution is dripped, kept at a constant temperature for 30 minutes, filtered and washed to pH = 6.8, filtered and dried, and burned at a constant temperature of 950 ° C. After 1 hour, after the post-treatment, the glittering golden pearlescent pigment with a weight of 28.8g was obtained.

Embodiment 3

[0019] Fluorphlogopite powder 10-60 microns 20g, TiO 2 (Content 186g / L) solution 50mL, make 800mL suspension with deionized water and powder, set temperature 76℃±2℃, PH=2.5±0.3. Add TiO dropwise at a rate of 12 mL per hour 2 Solution, add NaOH solution with a concentration of 10% at the same time to keep the pH value stable, add it after 4h 50min, and keep it for 30min under the condition of constant pH and temperature to form the magic color gold pigment, wash the pigment until it is neutral , and then make a suspension with water, set PH=3±0.3, set temperature 80°C±2°C, use FeCl 3 (content is 100g / L) solution, add dropwise at a flow rate of 1h 15mL, then add NaOH (10%) concentration solution dropwise to keep the pH value stable, after 1h 20min dropwise, keep the pH and temperature constant and stir for 30min Filter, wash to neutral pH=7, filter and dry, bake (960°C) for 30 minutes, and then release from the oven to obtain a shiny golden pigment, 29.8g of powder.

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PUM

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Abstract

Disclosed is a kind of fluorine bronze mica nacreous pigments produced by artificial synthetic fluorine bronze mica, hydrolyzing the titanium dioxide completely and covering on the mica cloth in the glass lining autoclave, burning and getting the extraordinary nacreous pigments with high weatherability. The product is characterized by the high brightness, fire resistance which can reach as high as 1100DEG C, chemical stability, non-toxic, non-odour, flame-proof, acid and alkali-resisting, resistance to ultraviolet radiation, resistance to chemical solvent, non-conductive, and is adapted for special functionality textured paint application in space, navigation, automobile, ceramics and cosmetics and so on.

Description

technical field [0001] The present invention relates to decorative pigments for cosmetics, paints, printing inks, printing and dyeing, coatings and the like. Background technique [0002] At present, it involves flake substrates coated with metal oxide layers, especially mica or mica-based color luster pigments coated with metal oxides. It has been used for many years, and there are many patent documents in the United States, Germany and other countries. It is recorded that the mica mentioned is artificially synthesized or natural mica. Due to natural defects such as mineral and air inclusions, mineral dirt, irregular crystallization, ripples or breaks, and cracks in natural mica, a discontinuous coating may be formed, which is seriously It will affect the product quality such as the luster and color of pearlescent pigments, and the heat resistance stability of natural mica is low, which will affect the glaze and transparent enamel. Synthetic mica, such as fluorophlogopite,...

Claims

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Application Information

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IPC IPC(8): C09C3/06
Inventor 刘国忠贾鹏飞腾勇刘雨
Owner 刘国忠
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