High-purity iron pearlescent pigment and manufacturing method thereof

A pearlescent pigment and a production method technology, which are applied in the directions of inorganic pigment processing, chemical instruments and methods, fibrous fillers, etc., to achieve the effects of improving vividness, simple operation method and strong applicability

Inactive Publication Date: 2015-04-29
ZHEJIANG COLORAY TECH DEV
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  • Abstract
  • Description
  • Claims
  • Application Information

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  • High-purity iron pearlescent pigment and manufacturing method thereof

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Example Embodiment

[0035] Example 1

[0036] A high-purity iron pearlescent pigment, comprising a pearlescent pigment substrate 10, the outer surface of which is coated with Fe 2 O 3 Coating layer 11, the Fe 2 O 3 The coating layer 11 and the pearlescent pigment substrate 10 are also coated with several layers of composite layers 20 capable of reflecting and refracting light. The composite layer 20 is made of Fe 2 O 3 The cladding layer 11 and the auxiliary metal oxide layer 12 containing the metal oxide of non-ferrous elements are composed, and the auxiliary metal oxide layer 12 is located in the two layers of Fe 2 O 3 Between the cladding layer 11.

[0037] The aforementioned pearlescent pigment substrate 10 is one or more of natural mica, synthetic mica and glass. The metal oxide in the auxiliary metal oxide layer 12 is TiO 2 , ZrO 2 One or more of ZnO.

[0038] Preferably, the composite layer 20 has 4 layers, and the metal oxide in the auxiliary metal oxide layer 12 of the composite layer 20 of eac...

Example Embodiment

[0039] Example 2

[0040] A manufacturing method of high-purity iron pearlescent pigment, including the following steps:

[0041] A. Feeding, adding the pearlescent pigment base material into the reaction vessel, adding water, stirring and heating, adding acid solution to adjust the pH to acidity;

[0042] B. Add FeCl to the reaction vessel 3 Solution, and add alkaline solution to adjust the pH to alkaline, and stir at constant temperature;

[0043] C. Add TiCl dropwise 4 Or ZrCl 4 Or ZnCl 2 Put the solution into the reaction vessel and stir;

[0044] D. Repeat steps B-C several times;

[0045] E. Add FeCl to the reaction vessel 3 Solution, and adjust the pH to alkaline with alkali solution, continue to stir at constant temperature;

[0046] F. The solid materials in the reaction vessel are washed with water, separated, dried and roasted to obtain high-purity iron pearlescent pigments.

[0047] Preferably, in step A, the temperature is raised to 80° C., and an acid solution is added to adj...

Example Embodiment

[0050] Example 3

[0051] Preparation of high-purity bronze pearlescent pigment CR7500

[0052] 1. Put 30g 10-60μm mica powder into a 1000ml beaker;

[0053] 2. Add water to 500ml, stir and heat to 80℃;

[0054] 3. The control speed is 350 revolutions per minute, and the pH is adjusted to 3.0;

[0055] 4. Start adding 10ml FeCl with a concentration of 1mol / L 3 Solution, while maintaining a constant pH with 4mol / L NaOH solution, stir at constant temperature for 10min after adding;

[0056] 5. Drop 1ml TiCl with a concentration of 2mol / L into the beaker 4 Solution. Stir for 10min after adding;

[0057] 6. Repeat steps 4 and 5 three times to complete 4 layers of TiO 2 的cladding;

[0058] 7. Continue to drip about 270ml FeCl with a concentration of 1mol / L 3 Solution, while maintaining a constant pH with 4mol / L NaOH solution, until the color reaches bronze, continue to stir at constant temperature for 30 minutes;

[0059] 8. Clean and separate the materials in the beaker, dry, and roast at 600°...

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Abstract

The invention belongs to the technical field of pearlescent pigments, and relates to a high-purity iron pearlescent pigment and a manufacturing method thereof. The high-purity iron pearlescent pigment comprises a pearlescent pigment base material; the outer surface of the pearlescent pigment base material is coated with a Fe2O3 coating layer; several composite layers capable of reflecting and refracting light rays are further coated between the Fe2O3 coating layer and the pearlescent pigment base material; each composite layer is composed of the Fe2O3 coating layer and an auxiliary metal oxide layer containing metal oxides of non-ferrous elements; the auxiliary metal oxide layer is located between two Fe2O3 coating layers. According to the invention, the color purity and brightness can be improved.

Description

technical field [0001] The invention belongs to the technical field of pearlescent pigments, and relates to a high-purity iron pearlescent pigment and a preparation method thereof. Background technique [0002] From the invention of pearlescent pigments, the iron series has been used in various fields as a large series. The preparation of ordinary iron series pearlescent pigments has already been patented at home and abroad, and the technology is already very mature. [0003] Pearlescent pigments are roughly divided into the following series according to the different coating materials: silver white series, interference series, gold series, iron series. Interference series, gold series, and iron series are usually called colored pearlescent pigment series because their colors are different from those of conventional natural pearls. [0004] After many years and technical improvements, many characteristic high-purity products have emerged in other color series. For example,...

Claims

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Application Information

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IPC IPC(8): C09C1/40C09C1/28C09C3/06
Inventor 卓仲标
Owner ZHEJIANG COLORAY TECH DEV
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