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PH-sensitive allochroic 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: 2018-09-14
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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  • PH-sensitive allochroic inorganic material and preparation method thereof
  • PH-sensitive allochroic inorganic material and preparation method thereof
  • PH-sensitive allochroic 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) The Li with a purity of 99% or more 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) Molecular formula ingredients are mixed, where x=0.3. Planetary milling for 60 minutes (solvent is alcohol, rotation speed is 300 rpm), after drying, pre-fired in air at 800°C for 2 hours to prepare ceramic powder. The pre-fired powder has a Nasicon structure and a space group. R3C. Among them, planetary ball milling is carried out in a ball milling tank. The material of the ball milling tank is polytetrafluoroethylene, the ball milling medium is 1mm zirconia pellets, and the solvent is alcohol. The volume ratio of ball: powder: alcohol is 1:1:1.1.

[0035] (2) Using Li with a purity of over 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, dried and pre-fired in an air atmosp...

Embodiment 2

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

[0040] (1) The Li with a purity of 99% or more 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) Molecular formula ingredients are mixed, where x=0.4. Planetary milling for 120 minutes (solvent is alcohol, rotation speed is 300 rpm), after drying, pre-fired in air at 750°C for 3 hours to prepare ceramic powder. The pre-fired powder has a Nasicon structure and a space group. R3C. Among them, planetary ball milling is carried out in a ball milling tank. The material of the ball milling tank is polytetrafluoroethylene, the ball milling medium is 1mm zirconia pellets, and the solvent is alcohol. The volume ratio of ball: powder: alcohol is 1:1:1.1.

[0041] (2) Using Li with a purity of over 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 120 minutes, dried and pre-fired in an air atmosph...

Embodiment 3

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

[0046] (1) The Li with a purity of 99% or more 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) Molecular formula ingredients are mixed, where x=0.35. Planetary milling for 90 minutes (solvent is alcohol, rotation speed is 300 rpm), after drying, pre-fired in air at 775°C for 2.5 hours to prepare ceramic powder. The pre-fired powder has a Nasicon structure and a space group. R3C. Among them, planetary ball milling is carried out in a ball milling tank. The material of the ball milling tank is polytetrafluoroethylene, the ball milling medium is 1mm zirconia pellets, and the solvent is alcohol. The volume ratio of ball: powder: alcohol is 1:1:1.1.

[0047] (2) Using Li with a purity of over 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 90 minutes, dried and pre-fired in an air atmosph...

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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 a color-changing material, in particular to a preparation method of 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. In recent decades, color-changing materials that can change the color reversibly by external stimuli have attracted much attention. For example, photochromic materials produce color changes through light induction, thermochromic materials change colors through the action of heat, and ionochromic materials change colors through the action of ions. These color-changing materials have long been used in our daily lives, such as goggles made of photochromic lenses, and thermochromic temperature indicators on baby spoons. [0003] The pH-sensitive color-changing material is a material that changes color in the solution due to the pH change of the...

Claims

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Application Information

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Patent Type & Authority Applications(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
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