Silica type Bi24Al<2-x>MnxO39 grass green inorganic pigment and preparation method thereof

A bi24al2-xmnxo39, inorganic pigment technology, applied in the field of inorganic pigments, can solve problems such as limiting the application of pigments, and achieve the effects of bright color, stable structure and high chemical stability

Active Publication Date: 2019-12-27
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such as Mn-doped Ba 2 In 2 o 5 、Ba 3 V 2 o 8 、BaAl 2 o 4 Such green pigments have high pigment purity, high thermal stability, acid and alkali resistance, and adjustable color, but their expensive metal In and heavy metal Ba limit the application of their pigments.

Method used

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  • Silica type Bi24Al&lt;2-x&gt;MnxO39 grass green inorganic pigment and preparation method thereof
  • Silica type Bi24Al&lt;2-x&gt;MnxO39 grass green inorganic pigment and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: with MnO 2 Prepare 2 g of Bi for Mn source 24 Al 1.9 mn 0.1 o 39 Inorganic pigments

[0024] According to Bi 24 Al 1.9 mn 0.1 o 39 The chemical formula of Bi is weighed according to a certain stoichiometric ratio 2 o 3 , Al 2 o 3 , MnO 2 , the mass tolerance is ±0.0005g. Weigh Bi with electronic analytical balance 2 o 3 (1.9632g), Al 2 o 3 (0.0340g), MnO 2 (0.0031 g). The weighed raw materials were put into an agate mortar, fully ground and mixed for 20 minutes, then put into a stainless steel mold with a diameter of 15 mm, passed through a tablet press, and held at a pressure of 10 MPa for 1 minute. Put the pressed block into the muffle furnace, raise the muffle furnace to 750°C at a heating rate of 5°C / min, and keep it at 750°C for 6 hours. The cooling rate was reduced to room temperature, and finally the sample was taken out and ground to obtain a stable grass-green inorganic pigment.

Embodiment 2

[0025] Embodiment 2: with Mn 2 o 3 Prepare 2 g of Bi for Mn source 24 Al 1.3 mn 0.7 o 39 Inorganic pigments

[0026] According to Bi 24 Al 1.3 mn 0.7 o 39 The chemical formula of Bi is weighed according to a certain stoichiometric ratio 2 o 3 , Al 2 o 3 , Mn 2 o 3 , the mass tolerance is ±0.0005g. Weigh Bi with electronic analytical balance 2 o 3 (1.9574g), Al 2 o 3 (0.0232g), Mn 2 o 3 (0.0193g). The weighed raw materials were put into an agate mortar, fully ground and mixed for 20 minutes, then put into a stainless steel mold with a diameter of 15 mm, passed through a tablet press, and held at a pressure of 20 MPa for 1 minute. Put the pressed block into the muffle furnace, raise the muffle furnace to 750°C at a heating rate of 5°C / min, and keep it at 750°C for 4 hours. The cooling rate was reduced to room temperature, and finally the sample was taken out and ground to obtain a stable grass-green inorganic pigment.

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Abstract

The invention discloses a silica type Bi24Al<2-x>MnxO39 grass green inorganic pigment and a preparation method thereof. The color of the pigment is bright grass green, the structure of the pigment isa silica type structure, and the chemical composition of the pigment is Bi24Al<2-x>MnxO39, wherein x is greater than 0 and less than or equal to 0.8. The pigment is prepared through a high-temperaturesolid-phase method; the preparation method comprises the following steps: preparing; with Bi2O3, Al2O3 and Mn2O3 or MnO2 as raw materials, performing uniform grinding, tabletting the mixture under the pressure of 10-30 MPa, then sintering the tablets is conducted in a muffle furnace at 600-800 DEG C for 4-10 h, wherein the heating rate is 5-10 DEG C / min and the cooling rate is 5-10 DEG C / min. The grass green inorganic pigment synthesized by the method is environment-friendly, non-toxic, stable in structure and bright in color, and the preparation method is simple in process and low in equipment requirement.

Description

technical field [0001] The invention belongs to the technical field of inorganic pigments, and in particular relates to an environmentally friendly, non-toxic, bright-colored silica-type grass-green inorganic pigment and a preparation method of the pigment. Background technique [0002] Compared with organic pigments, inorganic pigments have the advantages of excellent stability, strong hiding power, acid and alkali resistance and weather resistance, so they are widely used in coatings, inks, plastics, rubber, paints, glazes and ceramics. With the expansion of the application range of inorganic pigments, the requirements for the performance of inorganic pigments are becoming more and more stringent. Inorganic pigments are divided into traditional natural inorganic pigments and synthetic inorganic pigments. Traditional natural inorganic pigments are mainly derived from ores in nature, such as azurite, bismuth yellow, cinnabar, etc. Natural inorganic pigments generally have l...

Claims

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Application Information

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IPC IPC(8): C01G45/12
CPCC01G45/1221C01P2002/72C01P2002/84
Inventor蒋朋崔坤洋
OwnerUNIV OF SCI & TECH BEIJING