Photochromic-based optical storage material and preparation method thereof

An optical storage material and photochromic technology, applied in the field of optical storage materials, can solve the problems of limited types of ferroelectric materials, limited color changes, and restrictions on the application of ferroelectric materials

Active Publication Date: 2021-02-09
东营睿港投资服务有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] At present, the types of photochromic ferroelectric materials are very limited, and their color changes are also very limited, which limits the application of ferroelectric materials to a large extent; therefore, if the ferroelectric properties and optical properties of ferroelectric materials can be further combined, increasing Control methods are particularly important

Method used

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  • Photochromic-based optical storage material and preparation method thereof
  • Photochromic-based optical storage material and preparation method thereof
  • Photochromic-based optical storage material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Using Bi with a purity of 99.5% 2 o 3 , 99.8% Na 2 CO 3 , 99.0% TiO 2 , 99.5% of K 2 CO 3 , 99.5% Nb 2 o 5 , 99.9% Er 2 o 3 As raw material, according to 0.98Na 0.5 Bi 0.5 TiO 3 -0.02Na 0.5 K 0.5 NbO 3: 0.002Er metering ratio and weighing, put it into a ball mill tank and mix ball milling, ball milling conditions: the volume ratio of raw materials, agate ball volume, and ball milling medium anhydrous ethanol is equal to 1:1:1.5, ball mill it for 12 hours, after ball milling The raw materials were put into an oven and baked at 80° C. for 4 hours. Afterwards, use a tablet machine to press the dried raw materials into raw material green embryos with a diameter of 40 mm, and then put the pressed green embryos into a KBF1400 box furnace for pre-calcination. The pre-calcination condition is 800 ° C for 2 hours. , and then crush the pre-fired block sample, grind it into a powder, sieve it, ball mill it for 8 hours, and put it into an oven at 80° C. for 4 hours ...

Embodiment 2

[0039] It is basically the same as Example 1, the difference is that this example is based on 0.88Na 0.5 Bi 0.5 TiO 3 -0.12Na 0.5 K 0.5 NbO 3 : 0.002Er metering ratio weighing, made 0.88Na 0.5 Bi 0.5 TiO 3 -0.12Na 0.5 K 0.5 NbO 3 :0.002Er ceramics, the ceramics have a pure perovskite structure.

[0040] Similarly, the 0.88Na prepared in this embodiment 0.5 Bi 0.5 TiO 3 -0.12Na 0.5 K 0.5 NbO 3 :0.002Er ceramics for relevant tests, test results please refer to Figure 5-7 . Figure 5 Show 0.88Na 0.5 Bi 0.5 TiO 3 -0.12Na 0.5 K 0.5 NbO 3 : The remnant polarization of 0.002Er material is about 16μC / cm 2 , weaker ferroelectricity; Figure 6 It shows that the reflection coefficient of the ceramics after irradiation is significantly reduced, and the reflection coefficient of the ceramics after polarization and irradiation is not further reduced like that of the ceramics in Example 1, which is mainly due to the 0.88Na 0.5 Bi 0.5 TiO 3 -0.12Na 0.5 K 0.5 NbO...

Embodiment 3

[0043] Using Bi with a purity of 99.5% 2 o 3 , 99.8% Na 2 CO 3 , 99.0% TiO 2 , 99.5% of K 2 CO 3 , 99.5% Nb 2 o 5 , 99.9% Er 2 o 3 As raw material, according to 0.92Na 0.5 Bi 0.5 TiO 3 -0.08Na 0.5 K 0.5 NbO 3 : 0.002Er metering ratio and weighing, put it into a ball mill tank and mix ball milling, ball milling conditions: the volume ratio of raw material, agate ball volume, and ball milling medium anhydrous ethanol is equal to 1:1.2:1, mill it for 2 hours, after ball milling The raw materials were put into an oven and baked at 80° C. for 4 hours. Afterwards, use a tablet machine to press the dried raw materials into raw material green embryos with a diameter of 40 mm, and then put the pressed green embryos into a KBF1400 box furnace for pre-calcination. The pre-calcination condition is 750 ° C for 3 hours. , and then crush the pre-fired block sample, grind it into a powder, sieve it, ball mill it for 5 hours, and put it into an oven at 80°C for 4 hours to dry t...

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Abstract

A photochromic-based light storage material comprising a structure of ABO 3 The perovskite lead-free ferroelectric ceramic material of structure is characterized in that: the chemical formula of this lead-free ferroelectric ceramic material is (1-x)Na 0.5 Bi 0.5 TiO 3 ‑xNa 0.5 K 0.5 NbO 3 :0.002Er, where 0.02≤x≤0.12, by adding 0.002 mole content of rare earth element Er at the A position 3+ , and changing the Na of the material 0.5 Bi 0.5 TiO 3 and Na 0.5 K 0.5 NbO 3 Content, and then realize the optical storage of materials. The invention also discloses a preparation method of the optical storage material. Compared with the prior art, the present invention can reversibly regulate the color and luminous intensity of ceramic materials through electric field, irradiation and heating to meet the requirements of different applications; and the preparation method of the present invention is simple and the cost of raw materials is low.

Description

technical field [0001] The invention belongs to the technical field of optical storage materials, and in particular relates to a photochromic-based optical storage material and a preparation method thereof. Background technique [0002] Photochromic materials refer to a class of materials that can change color after being irradiated by a light source. Traditional photochromic materials include traditional inorganic photochromic materials and traditional organic photochromic materials, of which traditional inorganic photochromic materials mainly include tungsten oxide, bromide, etc., which have no fluorescent properties; traditional organic photochromic materials although It can emit light, but its thermal stability and corrosion resistance are poor. These deficiencies greatly limit their wide application. [0003] Ferroelectric materials with a perovskite structure have excellent electrical properties such as piezoelectricity, ferroelectricity, and dielectricity, and have ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/475C04B35/622
CPCC04B35/475C04B35/622C04B2235/3201C04B2235/3224C04B2235/3251C04B2235/96
Inventor 田辉明李凯旋罗来慧
Owner 东营睿港投资服务有限责任公司
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