Reinforcing material, and preparation method and application thereof in preparation of thermosensitive film

A technology of reinforcing material and heat-sensitive film, applied in the direction of coating, etc., can solve the problem of low bonding strength of heat-sensitive film, and achieve the effect of easy batch production, low energy consumption and stable chemical properties

Inactive Publication Date: 2013-11-20
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the heat-sensitive film prepared by this method has low self-strength and bonding strength with the substrate, and cannot withstand the erosion of high-temperature air flow or corrosion by high-temperature flue gas.

Method used

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  • Reinforcing material, and preparation method and application thereof in preparation of thermosensitive film
  • Reinforcing material, and preparation method and application thereof in preparation of thermosensitive film
  • Reinforcing material, and preparation method and application thereof in preparation of thermosensitive film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1) Preparation of La 0.6 Sr 0.4 MnO 3 Sol, 4.37 grams of lanthanum nitrate (La(NO 3 ) 3 ·6H 2 O), 1.42 grams of strontium nitrate (Sr(NO 3 ) 2 ), 4.21 grams of manganese nitrate (Mn(NO 3 ) 2 4H 2 O) Mix and dissolve in deionized water to obtain a solution, add citric acid-ethylene glycol solution, stir to form a sol and continue to stir for 0.5 hours to obtain La 0.6 Sr 0.4 MnO 3 Sol; the ratio of the amount of metal cation in the solution to the amount of citric acid is 1:1, and in the citric acid-ethylene glycol solution, the ratio of the amount of matter between citric acid and ethylene glycol is 1:2;

[0030] 2) Preparation of La 0.6 Sr 0.4 MnO 3 Gel, the sol prepared in step 1) was heated and stirred at 60°C until viscous, and then dried at 60°C for 12 hours to obtain La 0.6 Sr 0.4 MnO 3 gel;

[0031] 3) Preparation of La 1-x Sr x MnO 3 Powder, the La prepared in step 2) 0.6 Sr 0.4 MnO 3 The gel was calcined at 600 °C for 1 hour, and then th...

Embodiment 2

[0037] 1) Preparation of LaMnO 3 Sol, according to the molar ratio La:Mn=1:1, mix and dissolve lanthanum nitrate and manganese nitrate in deionized water to obtain a solution, add citric acid-ethylene glycol solution, stir to form a sol and continue to stir for 0.5 hours to obtain LaMnO 3 Sol; the ratio of the amount of metal cation in the solution to the amount of citric acid is 1:1, and in the citric acid-ethylene glycol solution, the ratio of the amount of matter between citric acid and ethylene glycol is 1:2;

[0038] 2) Preparation of LaMnO 3 Gel, the sol prepared in step 1) was heated and stirred at 60°C until viscous, and then dried at 60°C for 12 hours to obtain La 0.6 Sr 0.4 MnO 3 gel;

[0039] 3) Preparation of La 1-x Sr x MnO 3 Powder, the LaMnO prepared in step 2) 3 The gel was calcined at 600 °C for 1 hour, and then the calcined product was ground for 10 minutes to obtain LaMnO 3 Powder;

[0040] 4) Prepare pure low melting point phase powder, mix 1.52g ...

Embodiment 3

[0045] 1) Preparation of La 0.2 Ca 0.8 FeO 3 Sol, according to the ratio of the amount of substances La: Ca: Fe = 0.2: 0.8: 1, mix and dissolve 1.27g of lanthanum nitrate, 2.78g of calcium nitrate, and 5.95g of ferric nitrate in deionized water to obtain a solution, add citric acid-ethylene glycol solution, stirred to form a sol and continued to stir for 3 hours to obtain La 0.6 Sr 0.4 FeO 3 Sol, the ratio of the amount of metal cations in the solution to the amount of citric acid is 1:3, and in the citric acid-ethylene glycol solution, the ratio of the amount of matter between citric acid and ethylene glycol is 1:6;

[0046] 2) Preparation of La 0.6 Sr 0.4 FeO 3 Gel, the sol prepared in step 1) was heated and stirred at 90°C until viscous, and then left to dry at 60°C for 12 hours to obtain La 0.6 Sr 0.4 FeO 3 Gel; the gel was calcined at 800°C for 1 hour, and then the calcined product was ground for 10 minutes to obtain La 0.6 Sr 0.4 FeO 3 Powder;

[0047] 3) P...

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PUM

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Abstract

The invention discloses a reinforcing material, and a preparation method and an application thereof in preparation of a thermosensitive film. The reinforcing material can realize uniform and dense coating, and substantially improves the strength and the wear resistance of a coated film. The obtained thermosensitive film coated by the reinforcing material has smooth surface, good acid and alkali corrosion resistance and strong wear resistance, and thus the reinforcing material can be used for reinforcement of the non-direct contact-type surface of the thermosensitive film and the like under a high-temperature flue gas corrosion and erosion environment. The reinforcing material comprises the following components, in parts by weight: 0.01 to 2 parts of La1-xAxMO3, 5 to 9.5 parts of an organic solvent, and 0.49 to 4.99 parts of a low melting point phase powder. In La1-xAxMO3, A represents Ca or Sr, M represents Mn or Fe, and 0.1<=x<=0.8; the organic solvent is glycerol or a mixture of terpineol and ethyl cellulose, and in the mixture of terpineol and ethyl cellulose, the weight ratio of terpineol to ethyl cellulose is 70:1-2; and the low melting point phase powder comprises the following components, in parts by weight: 3 to 6 parts of SiO2, 2-6 parts of Na2B4O7-10H2O, 0.2 to 2 parts of Al2O3, and 0.1 to 1 part of CaO.

Description

technical field [0001] The invention relates to a reinforcing material, in particular to a reinforcing material, a preparation method and an application in preparing a heat-sensitive film. It belongs to the technical field of functional materials. Background technique [0002] Rare earth perovskite structure oxide film has good high temperature resistance, corrosion resistance and electrical properties in oxidizing and reducing atmospheres, and is a good high temperature electric heating element and thermistor element. Compared with bulk thermal elements, thin-film thermal elements have a larger contact area and respond to temperature signals more quickly. [0003] The preparation of perovskite-based thin film materials by screen printing has the characteristics of simple process flow, low cost and uniform density, and is suitable for mass production of thermistor thin films and high-temperature electric heating films. [0004] However, the heat-sensitive film prepared by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D7/12C04B35/624C04B35/01C04B35/50
Inventor 朱新德崔雪英敖青
Owner SHANDONG UNIV
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