Bright-colored bright-red inclusion pigment for ceramic ink-jet printing and preparation method of bright-colored bright-red inclusion pigment

Abstract

The invention relates to the field of inorganic pigments, in particular to a preparation method of a superfine zirconium silicate-coated cadmium selenide bright red pigment capable of meeting ceramic ink-jet printing requirements. When the method is used for preparing the inclusion pigment, the inclusion rate can be increased to 15-25% from original 8-10%. The obtained inclusion pigment is small in particle size and narrow in particle size distribution (wherein an average particle size is 0.6-0.7 micron, and main particle size distribution is in a range of 0.5-1.0 micron), the particle size of the inclusion pigment is greatly reduced compared with the particle size of an existing inclusion pigment, and the inclusion pigment can present the same bright bright red color; and when a CIEL * a * b * system is adopted for representing pigment performance, the lightness value (L *), the redness value (a *) and the yellowness value (b *) of the inclusion pigment are 54-57, 50-53 and 19-23 respectively. According to the invention, the inclusion rate is greatly improved, the amount of post-treatment waste liquid is greatly reduced, production efficiency is greatly improved, and production cost is greatly reduced.

Description

Technical field

[0001] The invention relates to the field of inorganic pigments, in particular to a bright red zirconium silicate-wrapped cadmium sulfoselenide pigment suitable for inkjet printing of ceramics.

Background technique

[0002] Zirconium silicate (ZrSiO 4 ) wrapped cadmium sulfide selenide (Cd(S x Se 1-x )) The bright red material is characterized by its unique high temperature stability and the unique brilliance of the cadmium sulfur selenide pigment, and the heavy metal element Cd is replaced by ZrSiO 4 It is wrapped and hard to dissolve, and has minimal toxicity. It has long been the main red pigment used in the ceramic industry, and has been widely used in the glaze decoration of ceramic products. In current industrial production, zirconium silicate-coated cadmium sulfoselenide pigments are generally prepared by liquid-phase co-precipitation. The typical preparation process is: firstly use water-soluble zirconium salt and soluble cadmium salt to make m...

Examples

Embodiment 1

[0019] Preparation of ZrSiO 4 Wrapped CdSe x Te y S 1-x-y Pigments where x=0.27, y=0.03, ZrSiO 4 / CdSe x S 1-x The molar ratio is 10:1.

[0020] Na 2 Add S, Se powder, Te powder and SDBS to 50°C hot water and stir for 30 minutes to obtain Se x Te y S 1-x-y Solution A with a concentration of 0.2mol / L; then an equimolar amount of Cd(NO 3 ) 2 Dissolved in water to give Cd 2+ Solution B with a concentration of 0.5mol / L; then slowly add solution A to solution B under stirring conditions to obtain a mixed solution, in which the concentration of SDBS is the theoretically synthesized CdSe x Te y S 1-x-y2.5% of the mass; finally add the mixed solution into a hydrothermal kettle with a polytetrafluoroethylene liner, after hydrothermal reaction at 150°C for 10 hours, filter and wash once with water and industrial ethanol, and dry at 80°C to obtain Bright red CdSe x Te y S 1-x-y Pigment powder with an average particle size of 100nm. Dissolve Pluronic F-127 and CTAB in w...

Embodiment 2

[0026] Adopt the method identical with embodiment one to prepare ZrSiO 4 Wrapped CdSe x S 1-x Pigments where x=0.26, y=0.04, ZrSiO 4 / CdSe x S 1-x The molar ratio is 8:1, and the Si / Zr molar ratio is controlled to be 1.1, and the lithium fluoride content is 6%. Other preparation methods and processes are the same as in Example 1. The encapsulation ratio of this method to prepare the wrapped color material is 16%, and the obtained wrapped color material has an average particle size of 0.7 micron, presenting a bright red color. When the CIE L*a*b* system is used to represent the performance of the color material, its L*, a The *, b* values ​​were 55, 53 and 19, respectively.

Technical field

[0001] The invention relates to the field of inorganic pigments, in particular to a bright red zirconium silicate-wrapped cadmium sulfoselenide pigment suitable for inkjet printing of ceramics.

Background technique

[0002] Zirconium silicate (ZrSiO 4 ) wrapped cadmium sulfide selenide (Cd(S x Se 1-x )) The bright red material is characterized by its unique high temperature stability and the unique brilliance of the cadmium sulfur selenide pigment, and the heavy metal element Cd is replaced by ZrSiO 4 It is wrapped and hard to dissolve, and has minimal toxicity. It has long been the main red pigment used in the ceramic industry, and has been widely used in the glaze decoration of ceramic products. In current industrial production, zirconium silicate-coated cadmium sulfoselenide pigments are generally prepared by liquid-phase co-precipitation. The typical preparation process is: firstly use water-soluble zirconium salt and soluble cadmium salt to make m...

Examples

Embodiment 1

[0019] Preparation of ZrSiO 4 Wrapped CdSe x Te y S 1-x-y Pigments where x=0.27, y=0.03, ZrSiO 4 / CdSe x S 1-x The molar ratio is 10:1.

[0020] Na 2 Add S, Se powder, Te powder and SDBS to 50°C hot water and stir for 30 minutes to obtain Se x Te y S 1-x-y Solution A with a concentration of 0.2mol / L; then an equimolar amount of Cd(NO 3 ) 2 Dissolved in water to give Cd 2+ Solution B with a concentration of 0.5mol / L; then slowly add solution A to solution B under stirring conditions to obtain a mixed solution, in which the concentration of SDBS is the theoretically synthesized CdSe x Te y S 1-x-y2.5% of the mass; finally add the mixed solution into a hydrothermal kettle with a polytetrafluoroethylene liner, after hydrothermal reaction at 150°C for 10 hours, filter and wash once with water and industrial ethanol, and dry at 80°C to obtain Bright red CdSe x Te y S 1-x-y Pigment powder with an average particle size of 100nm. Dissolve Pluronic F-127 and CTAB in w...

Embodiment 2

[0026] Adopt the method identical with embodiment one to prepare ZrSiO 4 Wrapped CdSe x S 1-x Pigments where x=0.26, y=0.04, ZrSiO 4 / CdSe x S 1-x The molar ratio is 8:1, and the Si / Zr molar ratio is controlled to be 1.1, and the lithium fluoride content is 6%. Other preparation methods and processes are the same as in Example 1. The encapsulation ratio of this method to prepare the wrapped color material is 16%, and the obtained wrapped color material has an average particle size of 0.7 micron, presenting a bright red color. When the CIE L*a*b* system is used to represent the performance of the color material, its L*, a The *, b* values ​​were 55, 53 and 19, respectively.