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Titanium sub-oxide black pigment and preparation method thereof

A titanium dioxide and black pigment technology, applied in the field of pigments, can solve the problems of restricting the application in the field of insulation, reducing the service life of titanium dioxide and organic substances, etc., to increase the coating coverage and volume resistivity, and increase the coating coverage. , the effect of excellent insulation

Active Publication Date: 2020-04-21
GUANGDONG HINNO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, titanium suboxide contains low-valent titanium oxide, and there are lattice defects of oxygen, and its electrical conductivity is generally greater than 1S / cm, which limits its application in the field of insulation; and titanium suboxide is in the ultraviolet and visible light bands, especially in the range of 300nm to 600nm It has high absorption intensity and strong photocatalytic activity. When used in combination with organic substances, photocatalytic decomposition reaction will occur, which will reduce the service life of titanium dioxide and organic substances, and limit its combined use with organic substances.

Method used

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  • Titanium sub-oxide black pigment and preparation method thereof
  • Titanium sub-oxide black pigment and preparation method thereof

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preparation example Construction

[0018] A preparation method of titanium oxide black pigment, comprising the steps of:

[0019] (1) Dispersion of the nuclei: adding a dispersant to the titania nuclei and stirring to obtain the substrate;

[0020] (2) Forming the first cladding layer: placing the base material in a vacuum chamber, adopting the mode of magnetron sputtering, using Al 2 o 3 Ceramic target or SiO 2 target, forming a first cladding layer on the outer surface of the substrate to obtain an intermediate,

[0021] Among them, the Al 2 o 3 Ceramic target or SiO 2 The distance between the target and the substrate is 90 mm to 150 mm;

[0022] (3) Forming the second cladding layer: placing the intermediate in a vacuum chamber, adopting the method of magnetron sputtering, using Al 2 o 3 Ceramic target or SiO 2 target, forming a second cladding layer on the outer surface of the first cladding layer to obtain the titanium oxide black pigment,

[0023] Among them, the Al 2 o 3 Ceramic target or SiO...

Embodiment 1

[0038] This embodiment provides a black titanium oxide pigment and a preparation method thereof.

[0039] Proceed in the following order using the magnetron sputtering method:

[0040] (1) Dispersion of nuclei: use 50 parts by mass of Ti with a particle size of 22nm to 54nm 2 o 3 and 50 mass parts Ti 3 o 5 As the titania nuclei, 5 parts by mass of glass microspheres with a particle diameter of 0.1 mm to 1 mm were added, mixed and mechanically stirred for 5 min, and the mixture was used as a base material.

[0041] (2) Coating dense Al 2 o 3 Membrane: Place substrate in vacuum chamber, use 99.99% Al 2 o 3 Ceramic target, Al 2 o 3 The distance between the ceramic target and the substrate is 150mm, vacuumize, and the background vacuum degree is ≥5.0×10 -4 Pa, argon gas with a purity of 99.999% is introduced, the working pressure is set to 0.08Pa, the substrate is continuously mechanically vibrated, and magnetron sputtering is started, and the sputtering is continued for...

Embodiment 2

[0045] This embodiment provides a black titanium oxide pigment and a preparation method thereof.

[0046] Use the described magnetron sputtering method to proceed in the following order:

[0047] (1) Dispersion of nuclei: use 50 parts by mass of Ti with a particle size of 76nm to 121nm 2 o 3 and 50 mass parts Ti 3 o 5 As the titania nuclei, 5 parts by mass of glass microspheres with a particle diameter of 0.1 mm to 1 mm were added, mixed and mechanically stirred for 5 min, and the mixture was used as a base material.

[0048] (2) Coating dense Al 2 o 3 Membrane: Place substrate in vacuum chamber, use 99.99% Al 2 o 3 Ceramic target, Al 2 o 3 The distance between the ceramic target and the substrate is 120mm, vacuumize, and the background vacuum degree is ≥5.0×10 -4 Pa, argon gas with a purity of 99.999% is introduced, the working pressure is set to 0.12Pa, the substrate is continuously mechanically vibrated, and magnetron sputtering is started, and the sputtering is c...

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Abstract

The invention relates to a titanium sub-oxide black pigment and a preparation method thereof. The preparation method comprises the following steps: adding a dispersing agent into a titanium sub-oxidecore, stirring the materials to obtain a base material, placing the base material in a vacuum chamber, forming a first coating layer on the outer surface of the base material by using an Al2O3 ceramictarget or an SiO2 target in a magnetron sputtering mode, and forming a second coating layer on the outer surface of the first coating layer by using the Al2O3 ceramic target or the SiO2 target in themagnetron sputtering mode to obtain the titanium sub-oxide black pigment, wherein during magnetron sputtering in the step (2) and the step (3), the sputtering distance is 90mm-150mm, but the used target materials are different. The magnetron sputtering method is easy in condition control, high in deposition speed, low in film forming temperature and good in process repeatability, and the preparedfilm is high in uniformity, high in compactness and strong in adhesive force. The two compact coating layers can endow the titanium sub-oxide black pigment with excellent insulativity, reduce exposure of photoactive groups on the surface layer, synergistically improve the photostability of the material and prolong the service life.

Description

technical field [0001] The invention relates to the field of pigments, in particular to a titanium oxide black pigment and a preparation method thereof. Background technique [0002] Titanium oxide (chemical formula: Ti n o 2n-1 ) is a kind of black oxide, which has the advantages of high hiding power similar to titanium dioxide pigment, good thermal stability, easy dispersion in aqueous phase and organic phase, environmental protection and non-toxicity, etc., and is suitable for coloring. However, titanium suboxide contains low-valent titanium oxide, and there are lattice defects of oxygen. Its conductivity is generally greater than 1S / cm, which limits its application in the field of insulation; and titanium suboxide is in the ultraviolet and visible light bands, especially in the range of 300nm to 600nm. It has high absorption intensity and strong photocatalytic activity. When used in combination with organic matter, photocatalytic decomposition reaction will occur, whic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/36C09C3/06
CPCC01P2004/84C01P2006/40C01P2006/60C01P2006/62C09C1/36C09C3/063
Inventor 漆小龙张新权陈建雄余家斌布施健明
Owner GUANGDONG HINNO TECH CO LTD