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Copper-chrome black pigment and preparation method thereof

A technology for copper chrome black and pigments, which is applied in the directions of inorganic pigment treatment, chemical instruments and methods, fibrous fillers, etc., can solve the problems of high production cost and complicated production process of copper chrome black, and achieves low product cost, chromous acid The effect of complete copper crystal and uniform particle distribution

Active Publication Date: 2018-12-21
中山市华山高新陶瓷材料有限公司
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Problems solved by technology

[0005] In order to solve the technical problems that the existing copper chrome black production process is relatively complicated and the production cost is expensive, the present invention provides a copper chrome black pigment with an average particle size of about 1 μm and a preparation method thereof

Method used

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  • Copper-chrome black pigment and preparation method thereof

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Embodiment Construction

[0022] A kind of copper chrome black pigment that the present invention proposes can be formulated by the raw material of following weight percentage content:

[0023] Copper oxide 20-35%, chromium trioxide 35-55%, manganese dioxide 20-45%. Among them, the particle size of copper oxide, chromium oxide and manganese dioxide raw materials is D 50 ≤2μm. According to needs, different raw material ratios can be selected to prepare copper chrome black pigments. Such as the raw material proportioning of different embodiments shown in the following table 1:

[0024]

[0025] Begin to prepare copper chrome black pigment according to above-mentioned raw material proportioning, preparation method step is as follows:

[0026] Step 1: Check whether the particle size of the raw materials copper oxide, chromium oxide and manganese dioxide meets D 50 ≤2μm, if it does not meet this requirement, it needs to be sanded first until the particle size requirement is reached, then weigh each r...

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Abstract

The invention discloses a copper-chrome black pigment and a preparation method thereof. The copper-chrome black pigment is prepared from the following raw materials in percentage by weight: 20-35 percent of copper oxide, 35-55 percent of chromium oxide, and 20-45 percent manganese dioxide. The particle diameter D50 of copper oxide, chromium oxide and manganese dioxide is less than or equal to 2 microns. The copper-chrome black pigment prepared by the method has the advantages of fine particles, uniform particle distribution, and complete copper chromite crystal, so that the copper-chrome blackpigment has strong coloring power, high stability and low product cost, and can satisfy the requirements on the copper-chrome black pigment in various fields.

Description

technical field [0001] The invention relates to a copper chrome black pigment and a preparation method thereof, in particular to a copper chrome black pigment with a particle diameter within 1 μm and a preparation method thereof. Background technique [0002] The general chemical name of copper chrome black is copper chromite, which is a kind of spinel type metal oxide mixed phase pigment, and also an environment-friendly composite inorganic pigment. Because of its good black tone, excellent chemical stability, heat resistance, light resistance, weather resistance, acid and alkali resistance, no migration, easy dispersion and other advantages, it is widely used in ceramics, enamel, glass, paint and plastic industries. [0003] The production methods of copper chromium black mainly include solid phase method and liquid phase method. The solid-phase method is to grind the raw materials such as copper oxide and chromium oxide through ball milling, calcining at high temperature...

Claims

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Application Information

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IPC IPC(8): C09C1/34C09C3/04C09C3/06C01G37/14
CPCC01G37/14C09C1/34C09C3/006C09C3/04
Inventor 程国胜巢雪安
Owner 中山市华山高新陶瓷材料有限公司
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