Novel photochromic material and preparation method thereof

A photochromic material and a new technology, applied in the field of new photochromic materials and their preparation, can solve problems such as unsatisfactory performance, and achieve the effect of reducing the intensity of the diffuse reflectance spectrum

Inactive Publication Date: 2022-05-17
CIVIL AVIATION UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It should be pointed out that the existing inorganic photochromic materials are relatively few, and their performance is not ideal.

Method used

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  • Novel photochromic material and preparation method thereof
  • Novel photochromic material and preparation method thereof
  • Novel photochromic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The up-conversion luminescence reversible control material provided in this embodiment is Ba 0.7 Sr 0.21-1.5x Ho x Yb 0.06 Nb 2 o 6 Ceramic material, wherein x=0.02, its preparation method is as follows:

[0018] Weigh 2.7907 g of BaCO 3 (99%), 0.5368 g SrCO 3 (99%), 0.0756 g Ho 2 o 3 (99.9%), 0.2367 g Yb 2 o 3 (99.9%) and 5.3167 g Nb 2 o 5 (99.99%), placed in a clean agate jar, using absolute ethanol (99.7%) as a solvent, grinding on a planetary ball mill to make a uniformly mixed powder for 24 hours. Then the above powder is dried in an oven, then placed in a corundum crucible, put into a box furnace, continuously raised to 1300°C for 3 hours, and then cooled to 550°C. Afterwards, the product obtained after cooling with the furnace is finely ground with an agate mortar, and the binder PVB (0.5% by weight of the product) is added, fully ground, mixed evenly, and granulated. A ceramic green sheet with a diameter of 13 mm was prepared under a pressure of 10...

Embodiment 2

[0020] The up-conversion luminescence reversible control material provided in this embodiment is Ba 0.7 Sr 0.21-1.5x Ho x Yb 0.06 Nb 2 o 6 Ceramic material, wherein x=0.08, its preparation method is as follows:

[0021] Weigh 2.7907 g of BaCO 3 (99%), 0.2684 g SrCO 3 (99%), 0.3026 g Ho 2 o 3 (99.9%), 0.2367 g Yb 2 o 3 (99.9%) and 5.3167 g Nb 2 o 5 (99.99%), placed in a clean agate jar, using absolute ethanol (99.7%) as a solvent, grinding on a planetary ball mill to make a uniformly mixed powder for 24 hours. Then the above powder is dried in an oven, then placed in a corundum crucible, put into a box furnace, continuously raised to 1300°C for 3 hours, and then cooled to 550°C. Afterwards, the product obtained after cooling with the furnace is finely ground with an agate mortar, and the binder PVB (0.5% by weight of the product) is added, fully ground, mixed evenly, and granulated. A ceramic green sheet with a diameter of 13 mm was prepared under a pressure of 10...

Embodiment 3

[0023] The up-conversion luminescence reversible control material provided in this embodiment is Ba 0.7 Sr 0.21-1.5x Ho x Yb 0.06 Nb 2 o 6 Ceramic material, wherein x=0.12, its preparation method is as follows:

[0024] Weigh 2.7907 g of BaCO 3 (99%), 0.0895 g SrCO 3 (99%), 0.4539 g Ho 2 o 3 (99.9%), 0.2367 g Yb 2 o 3 (99.9%) and 5.3167 g Nb 2 o 5(99.99%), placed in a clean agate jar, using absolute ethanol (99.7%) as a solvent, grinding on a planetary ball mill to make a uniformly mixed powder for 24 hours. Then the above powder is dried in an oven, then placed in a corundum crucible, put into a box furnace, continuously raised to 1300°C for 3 hours, and then cooled to 550°C. Afterwards, the product obtained after cooling with the furnace is finely ground with an agate mortar, and the binder PVB (0.5% by weight of the product) is added, fully ground, mixed evenly, and granulated. A ceramic green sheet with a diameter of 13 mm was prepared under a pressure of 10 ...

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Abstract

The invention discloses a novel photochromic effect material and a preparation method thereof. The chemical formula of the material is Ba < 0.7 > Sr < 0.21-1.5 x > Ho < x > Yb < 0.06 > Nb < 2 > O < 6 >, and x is equal to 0.0, 0.02, 0.04, 0.08, 0.10, 0.12 or 0.14. The preparation method comprises the following steps: taking SrCO3, BaCO3, Yb2O3, Ho2O3 and Nb2O5 as raw materials, mixing and grinding the raw materials in proportion, and further preparing the Ba < 0.7 > Sr < 0.21-1.5 x > HoxYb < 0.06 > Nb2O6 ceramic material by utilizing a simple high-temperature solid-phase reaction method. The invention has the advantage that the material shows obvious color change under the irradiation of near ultraviolet light. Meanwhile, under thermal stimulation, color change can be restored to a state before irradiation. The material can be used in the fields of optical switches, optical storage, safety anti-counterfeiting and the like in the future.

Description

technical field [0001] The invention belongs to the technical field of inorganic non-metallic functional materials, and in particular relates to a novel photochromic material and a preparation method thereof. Background technique [0002] Photochromic materials have many important applications in data storage, optical switches, rewritable paper, and multicolor displays, among others. Over the years, researchers have conducted a lot of research on photochromic materials. However, previous studies mainly focused on organic compounds, such as stilbene derivatives, sulfoxides, Steinhaus compounds, hydrazone compounds, o-nitrobenzyl derivatives, etc. However, most organic materials have poor thermal stability and are environmentally toxic, thus limiting their applications. [0003] Compared with organic materials, inorganic photochromic materials have many advantages, such as good chemical stability, high mechanical strength, and strong oxidation resistance. It should be point...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/01C04B35/50C04B35/622
CPCC04B35/01C04B35/50C04B35/622C04B2235/3213C04B2235/3215C04B2235/3224C04B2235/3251C04B2235/602C04B2235/656C04B2235/6567
Inventor 陈思毕见强郝瀚钰
Owner CIVIL AVIATION UNIV OF CHINA
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