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A kind of pH value sensitive discoloration inorganic material and preparation method thereof

An inorganic material and sensitive technology, applied in the field of color-changing materials, can solve the problems of increased manufacturing cost, cumbersome preparation process, and low yield, and achieve the effects of cost reduction, easy preparation method, and low cost

Active Publication Date: 2021-03-30
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Organic materials have many advantages, but the preparation process is cumbersome and the yield is not high, and a variety of waste liquids are produced during the preparation process, which must be harmlessly treated before being discharged, which increases the manufacturing cost
At the same time, some organic materials themselves have the potential to cause cancer or other diseases

Method used

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  • A kind of pH value sensitive discoloration inorganic material and preparation method thereof
  • A kind of pH value sensitive discoloration inorganic material and preparation method thereof
  • A kind of pH value sensitive discoloration inorganic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Preparation of pH Sensitive Color Changing Ceramics

[0034] (1) Li with a purity of more than 99% 2 CO 3 , ammonium polyphosphate, Al 2 o 3 、TiO 2 Press Li 1+x al x Ti 2-x P 3 o 12 (LATP) formula ingredient mix where x=0.3. Planetary ball milling for 60 minutes (the solvent is alcohol, the rotation speed is 300 rpm), after drying, pre-fired in air at 800°C for 2 hours to obtain ceramic powder. The main crystal phase of the pre-fired powder is Nasicon structure, and the space group is R3C. Wherein, the planetary ball milling is carried out in a ball milling pot, the material of the ball milling pot is polytetrafluoroethylene, the ball milling medium is 1mm zirconia balls, and the solvent is alcohol, wherein the ball: powder: alcohol volume ratio=1:1:1.1.

[0035] (2) Li with a purity of more than 99% 2 CO 3 , MnCO 3 , ammonium polyphosphate as raw material, according to LiMnPO 4 The molecular formula ingredients were mixed by ball milling for 60 minutes, ...

Embodiment 2

[0039] Preparation of pH-sensitive color-changing paint

[0040] (1) Li with a purity of more than 99% 2 CO 3 , ammonium polyphosphate, Al 2 o 3 、TiO 2 Press Li 1+x al x Ti 2-x P 3 o 12 (LATP) formula ingredient mix where x=0.4. Planetary ball milling for 120 minutes (alcohol solvent, 300 rpm), after drying, pre-fired in air at 750°C for 3 hours to obtain ceramic powder. The main crystal phase of the pre-fired powder is Nasicon structure, and the space group is R3C. Wherein, the planetary ball milling is carried out in a ball milling pot, the material of the ball milling pot is polytetrafluoroethylene, the ball milling medium is 1mm zirconia balls, and the solvent is alcohol, wherein the ball: powder: alcohol volume ratio=1:1:1.1.

[0041] (2) Li with a purity of more than 99% 2 CO 3 , MnCO 3 , ammonium polyphosphate as raw material, according to LiMnPO 4 The molecular formula ingredients were mixed by ball mill for 120 minutes, dried and pre-fired in an air atm...

Embodiment 3

[0045] Preparation of pH-sensitive color-changing film layer

[0046] (1) Li with a purity of more than 99% 2 CO 3 , ammonium polyphosphate, Al 2 o 3 、TiO 2 Press Li 1+x al x Ti 2-x P 3 o 12 (LATP) formula ingredient mix where x=0.35. The planetary ball was ground for 90 minutes (the solvent was alcohol, and the rotation speed was 300 rpm), and after drying, it was pre-fired in air at 775°C for 2.5 hours to obtain ceramic powder. The main crystal phase of the pre-fired powder was Nasicon structure, and the space group was R3C. Wherein, the planetary ball milling is carried out in a ball milling pot, the material of the ball milling pot is polytetrafluoroethylene, the ball milling medium is 1mm zirconia balls, and the solvent is alcohol, wherein the ball: powder: alcohol volume ratio=1:1:1.1.

[0047] (2) Li with a purity of more than 99% 2 CO 3 , MnCO 3 , ammonium polyphosphate as raw material, according to LiMnPO 4 The molecular formula ingredients were mixed b...

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Abstract

The invention discloses a pH-sensitive allochroic inorganic material and a preparation method thereof. The preparation method includes compounding Li2CO3, ammonium polyphosphate, Al2O3, TiO2 and MnCO3to obtain LATP and LiMnPO4 ceramic powder, adding ethyl alcohol after mixing the LATP ceramic powder with 10-40% of LiMnPO4 ceramic powder, and performing ball grinding, drying and sieving to obtainmixed powder; adding binders into the mixed powder for pelleting, conducting preforming to prepare a blank, and calcinating the blank in an air atmosphere to prepare pH-sensitive allochroic ceramic; after direct calcination of the mixed powder in the atmosphere, subjecting the mixed powder to crushing, ball grinding and sieving to obtain pH-sensitive allochroic powder, mixing the allochroic powderwith other resin solutions or emulsion to obtain a pH-sensitive allochroic paint or film material. The prepared pH-sensitive allochroic inorganic material has the advantages of safety, reliability, simplicity in preparation process, economy and environment protection, and accordingly, industrial production can be realized.

Description

technical field [0001] The invention relates to the technical field of color-changing materials, in particular to a method for preparing a pH-sensitive color-changing inorganic material. Background technique [0002] Color plays a very important role in people's daily life, and the change of color can be used as an important visual signal. Color-changing materials that undergo reversible changes in color upon exposure to external stimuli have attracted considerable attention in recent decades. For example, photochromic materials change color through the induction of light, thermochromic materials change color due to the action of heat, and ionochromic materials change color through the action of ions. These color-changing materials have long been used in our daily life, such as goggles made of photochromic lenses, thermochromic temperature indicators on baby spoons, etc. [0003] The pH-sensitive color-changing material is a material that changes color in a solution due to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/447C04B35/622C04B35/626C04B41/87C09D133/00C09D7/61C08L27/18C08K3/32C08J5/18
CPCC04B35/447C04B35/622C04B35/62645C04B41/5048C04B41/87C04B2235/3203C04B2235/3217C04B2235/3232C04B2235/3262C08J5/18C08J2327/18C09D133/00C09D7/61C04B41/483C04B41/4539C04B41/0072C08K3/32
Inventor 胡星胡智超陈逸炼李屹凌志远
Owner SOUTH CHINA UNIV OF TECH