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Film coating material as well as preparation method and application thereof

A technology of trititanium pentoxide and aluminum oxide, which is applied in the field of film materials, can solve the problems of affecting the yield of coating film, splashing, high powder rate, etc.

Inactive Publication Date: 2020-01-21
FUJIAN ACETRON NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the refractive index of titanium dioxide is relatively unstable; the existing granular trititanium pentoxide powder rate is relatively high, and it is easy to splash the product when it is used for coating, which in turn affects the coating yield

Method used

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  • Film coating material as well as preparation method and application thereof
  • Film coating material as well as preparation method and application thereof
  • Film coating material as well as preparation method and application thereof

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preparation example Construction

[0024] The invention provides a kind of preparation method of coating material, comprises the following steps:

[0025] Mixing titanium pentoxide, aluminum oxide and a binder, sequentially pressing, crushing, tablet forming and vacuum sintering to obtain a coating material.

[0026] In the present invention, unless otherwise specified, all raw material components are commercially available products well known to those skilled in the art.

[0027] In the present invention, the preparation method of titanium pentoxide preferably includes the following preparation steps: mixing titanium powder and titanium oxide powder, followed by granulation, vacuum sintering and grinding.

[0028] In the present invention, the median diameter of the titanium powder is preferably 10-35 μm, more preferably 15-30 μm, most preferably 20-25 μm; the purity of the titanium powder is preferably ≥99.9%. In the present invention, the median diameter of the titanium oxide powder is preferably 1-10 μm, m...

Embodiment 1

[0048] (1) After mixing titanium powder (median diameter of 10 μm, purity of 99.9%) and titanium dioxide powder (median diameter of 1-10 μm, purity of 99.9%) according to the mass ratio of 1:8, add them to the double-roller Granulate in the granulator to obtain mixed granules with a particle size of 0.1-5mm. The powder that does not meet the particle size requirements is repeatedly granulated. Among them, the groove depth of the two rollers of the roller granulator is 3mm, and the groove length is 20mm. The groove width is 6mm;

[0049] (2) Place the mixed particles in a spinning integrated molybdenum crucible with a diameter of 400mm, a height of 350mm, and a wall thickness of 4mm, and manually flatten it. The filling amount is 3 / 4 of the volume of the crucible. The pressed molybdenum crucible was placed in a vacuum sintering furnace, heated to 1800°C under the conditions of vacuum pressure of 0.08Pa and heating rate of 5°C / min, and then kept for 2 hours to obtain massive tit...

Embodiment 2

[0056] (1) After mixing titanium powder (median diameter of 25 μm, purity of 99.9%) and titanium dioxide powder (median diameter of 1 μm, purity of 99.9%) according to the mass ratio of 1:8.2, add it to the double-roll granulator Granulate in the medium to obtain mixed particles with a particle size of 0.1-5mm. The powder that does not meet the particle size requirements is repeatedly granulated. Among them, the groove depth of the two rollers of the roller granulator is 2mm, the groove length is 15mm, and the groove width 5mm;

[0057] (2) Place the mixed particles in a spinning integrated molybdenum crucible with a diameter of 300 mm, a height of 250 mm, and a wall thickness of 3.5 mm, and manually flatten it. The filling amount is 3 / 5 of the volume of the crucible. The spinning integrated molybdenum crucible is placed in a vacuum sintering furnace, heated to 1820°C under the conditions of a vacuum pressure of 0.05Pa and a heating rate of 7°C / min, and then kept for 5 hours t...

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Abstract

The invention provides a film coating material as well as a preparation method and application thereof, and belongs to the technical field of film coating materials. The preparation method of the filmcoating material provided by the invention comprises the following steps: mixing trititanium pentoxide, aluminum oxide and a binder, and sequentially carrying out pressing, crushing, tabletting molding and vacuum sintering to obtain the film coating material. The film coating material prepared by the preparation method provided by the invention has the advantages of no pulverization phenomenon, ahigh and stable refractive index and a high coating material yield, and the preparation method is simple to operate and suitable for industrial production.

Description

technical field [0001] The invention relates to the technical field of membrane materials, in particular to a coating material and its preparation method and application. Background technique [0002] At present, products such as mobile phone cameras, digital cameras, microscopes and monitoring probes generally need to use high refractive index coating materials. The existing high refractive index coating materials are mainly made of titanium dioxide or trititanium pentoxide. However, the refractive index of titanium dioxide is relatively unstable; the existing granular trititanium pentoxide has a high powder rate, which is prone to product splashing when used for coating, which in turn affects the coating yield. Contents of the invention [0003] The purpose of the present invention is to provide a coating material and its preparation method and application. The coating material prepared by the preparation method provided by the invention has no powdering phenomenon, hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/46C04B35/622C23C14/08C23C14/24
CPCC04B35/46C04B35/622C23C14/24C23C14/08C04B2235/3217C04B2235/602C04B2235/5436C04B2235/656C04B2235/6567C04B2235/6581C04B2235/77C04B2235/9646
Inventor 张瑜陈钦忠陈辉辉
Owner FUJIAN ACETRON NEW MATERIALS CO LTD
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