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Pearlescent pigment containing rutile and anatase type TiO2 layer, and preparation method of pearlescent pigment

A pearlescent pigment, anatase type technology, applied in the field of pearlescent pigments, can solve the problems of difficult to achieve color saturation and brightness, affecting the use effect, etc., to achieve the effect of brilliant color, good brightness and strong metallic feeling

Active Publication Date: 2018-07-13
GUANGXI CHESIR PEARL MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its color saturation and brightness are affected by factors such as the quality of the substrate, the coating effect of metal oxides, and coating conditions, so it is difficult to achieve the required color saturation and brightness, which affects its performance in coatings, inks, Effects of use in many important fields such as cosmetics

Method used

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  • Pearlescent pigment containing rutile and anatase type TiO2 layer, and preparation method of pearlescent pigment
  • Pearlescent pigment containing rutile and anatase type TiO2 layer, and preparation method of pearlescent pigment
  • Pearlescent pigment containing rutile and anatase type TiO2 layer, and preparation method of pearlescent pigment

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Experimental program
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Effect test

Embodiment 1

[0045] 1) Weigh 50 g of natural mica with a particle size of 1-12 μm in a 2L reaction kettle, add 1000 mL of deionized water with a conductivity of less than 20 μS / cm, and stir for 15 minutes to form the first suspension with a solid-to-liquid ratio of 1:20;

[0046] 2) At a stirring speed of 450r / min, heat the first suspension to 80°C, continue stirring for 40 minutes, adjust the pH value of the suspension to 9.5, and obtain the second suspension;

[0047] 3) After stirring for 15min, add 35mL of 2mol / L Na in the second suspension at a rate of 25mL / h 2 SiO 3 The solution is hydrolyzed and coated, and at the same time, 10% dilute hydrochloric acid is added dropwise to maintain the stability of the pH value of the suspension to obtain a third suspension;

[0048] 4) in Na 2 SiO 3 After the dropwise addition of the solution, continue stirring at constant temperature for 40 minutes, adjust the pH value of the third suspension to 1.0, and after stirring for 40 minutes at a stir...

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Abstract

The invention discloses pearlescent pigment containing rutile and an anatase type TiO2 layer. The pearlescent pigment comprises a layer structure consisting of the following layers: (A) a base material; (B) a first SiO2 coating on the surface of the base material; (C) a second SnO2 coating on the surface of the first SiO2 coating; (D) a third TiO2 coating on the surface of the second SnO2 coating;(E) a fourth SiO2 coating on the surface of the third TiO2 coating; (F) a fifth TiO2 coating on the surface of the fourth SiO2 coating. Compared with the prior art, the pearlescent pigment provided by the invention has the characteristics of being high in color saturation, good in brightness and strong in metallic feeling, the use value of the pearlescent pigment is increased, and the pearlescentpigment can meet the use demands in the fields such as automobiles, paint, leather, textile, plastic, electronics, ink and cosmetics. In addition, the invention also discloses a preparation method ofthe pearlescent pigment. The method is simple in process and easy to operate; the obtained product has high purity, and the final hue of the product can be controlled by adjusting the thickness of coating layers of the oxides.

Description

technical field [0001] The invention belongs to the technical field of pearlescent pigments, more specifically, the invention relates to a rutile and anatase TiO 2 Layered pearlescent pigment and its preparation method. Background technique [0002] Pearlescent pigment is a powder pigment formed by coating natural mica or synthetic mica or aluminum oxide flakes or glass flakes on the surface of the substrate with one or more layers of metal oxides using a special chemical process. Pigment is a flat sandwich structure, which can decompose composite light into various monochromatic lights, and form various interference colors of different colors through light interference, showing bright pearl luster and metallic luster. As a high value-added pigment, it is widely used in automobiles, paints, leather, textiles, plastics, In various fields such as electronics, rubber, food packaging, ink, cosmetics and specialty paper. [0003] At present, most pearlescent pigments are pigme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/40C09C1/28C09C3/06
CPCC09C1/0015C09C3/063C01P2006/22C01P2006/65C01P2006/80C01P2006/90
Inventor 苏尔田谢思维熊小寒余慧忠曾珠杨静
Owner GUANGXI CHESIR PEARL MATERIAL CO LTD
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