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Preparation method of durable hydrophobic anti-photoaging stone cultural relic sealing and protecting coating

A technology of stone cultural relics and durability, applied in the direction of coating, etc., can solve the problems of poor anti-light aging performance, poor durability, easy pollution, etc., and achieve the effect of improving hydrophobic performance, low price, and increasing roughness

Active Publication Date: 2021-01-15
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims at the disadvantages of the existing anti-photoaging stone cultural relics sealing coating, such as poor durability, easy pollution, poor anti-photoaging performance and low strength, etc., and provides a Preparation method of a durable hydrophobic anti-light-aging stone cultural relics sealing coating

Method used

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  • Preparation method of durable hydrophobic anti-photoaging stone cultural relic sealing and protecting coating
  • Preparation method of durable hydrophobic anti-photoaging stone cultural relic sealing and protecting coating

Examples

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Effect test

Embodiment 1

[0030] Embodiment 1: A preparation method of a durable hydrophobic anti-photoaging stone cultural relics sealing coating, specifically comprising the following steps:

[0031] (1) Prepare dilute fluorosilane solution: In a vacuum glove box, add fluorosilane to isopropanol, disperse ultrasonically for 5 min, in which the mass fraction of fluorosilane is 1.0wt%, seal with a parafilm, and place in the glove box in, ready to use;

[0032] (2) Nano-TiO modified with fluorosilane 2 : In vacuum and glove box, the nano-TiO 2 Add it into the dilute fluorosilane solution and disperse it ultrasonically for 5 minutes; place it in a vacuum oven to dry to remove the organic solvent, the drying temperature is 25°C, and the drying time is 8 hours.

[0033] (3) Preparation of durable hydrophobic anti-light aging stone cultural relics sealing coating: nano-TiO modified with fluorosilane 2 Added into the PDMS solution, ultrasonically dispersed for 30min, in which nano-TiO 2 The mass fraction...

Embodiment 2

[0035] Example 2: A method for preparing a durable hydrophobic anti-light-aging stone cultural relics sealing coating, which specifically includes the following steps:

[0036] (1) Prepare dilute fluorosilane solution: In a vacuum glove box, add fluorosilane to isopropanol, disperse ultrasonically for 5 minutes, in which the mass fraction of fluorosilane is 0.5wt%, seal with a parafilm, and place in the glove box ,stand-by;

[0037] (2) Nano-TiO modified with fluorosilane 2 : In vacuum and glove box, the nano-TiO 2 , added to the dilute fluorosilane solution, ultrasonically dispersed for 5 minutes; dried in a vacuum oven to remove organic solvents, the drying temperature was 25°C, and the drying time was 8 hours.

[0038] (3) Preparation of durable hydrophobic anti-light aging coating: Nano-TiO modified with fluorosilane 2 Added into the PDMS solution, ultrasonically dispersed for 30min, in which nano-TiO 2 The mass fraction of is 2.0wt%. Spray the evenly dispersed disper...

Embodiment 3

[0039] Example 3: A method for preparing a durable hydrophobic anti-light-aging stone cultural relics sealing coating, which specifically includes the following steps:

[0040] (1) Prepare dilute fluorosilane solution: In a vacuum glove box, add fluorosilane to isopropanol, disperse ultrasonically for 5 minutes, in which the mass fraction of fluorosilane is 0.1wt%, seal with a parafilm, and place in the glove box ,stand-by;

[0041] (2) Nano-TiO modified with fluorosilane 2 : In vacuum and glove box, the nano-TiO 2 Add it into the dilute fluorosilane solution and disperse it ultrasonically for 10 minutes; place it in a vacuum oven to dry to remove the organic solvent, the drying temperature is 25°C, and the drying time is 8 hours.

[0042] (3) Preparation of durable hydrophobic anti-light aging coating: Nano-TiO modified with fluorosilane 2 Added to the PDMS solution, ultrasonically dispersed for 45min, in which nano-TiO 2 The mass fraction of is 1.0wt%. Spray the evenly ...

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Abstract

The invention belongs to the technical field of preparation of a novel anti-photoaging stone cultural relic coating, and provides a preparation method of a durable hydrophobic anti-photoaging stone cultural relic sealing coating in order to overcome the defects that an existing anti-photoaging stone cultural relic sealing coating is poor in durability, prone to pollution, poor in anti-photoaging performance, low in strength and the like. According to the invention, fluorosilane and nano TiO2 are added into an isopropanol solution, and ultrasonic dispersion is carried out; a mixed solution of PDMS and a curing agent are prepared; and the fluorosilane grafted nano TiO2 is dried, the dried fluorosilane grafted nano TiO2 is added into a PDMS mixed solution, ultrasonic dispersion is carried out, the surface of the stone cultural relic is coated with the obtained product, vacuumizing is carried out, and curing is performed to obtain the durable hydrophobic anti-photoaging stone cultural relic sealing and protecting coating. Due to the fact that the nano TiO2 with the light shielding performance is enriched on the surface, the light aging resistance is improved. The fluorosilane-modifiednano TiO2 migrated to the surface reduces the surface energy of the coating, thereby enhancing the hydrophobicity. The preparation method is simple and easy to implement, short in period, suitable forlarge-scale production and applied to stone cultural relic protection.

Description

technical field [0001] The invention belongs to the technical field of preparation of novel anti-light-aging coatings for stone cultural relics, and in particular relates to a preparation method of a durable hydrophobic anti-light-aging sealing coating for stone cultural relics. Background technique [0002] Stone cultural relics are an important form of cultural relics and an important carrier for recording the life, production and dissemination of civilization of ancient people. However, during the outdoor storage process, stone cultural relics have been severely damaged by wind, sand, rain, light, heat radiation, microbial diseases, etc., and have been severely weathered and corroded. In addition, with the rapid development of human society and economy, a large amount of harmful waste gas is produced, such as a large amount of organic matter and SO 2 and NOx compounds, corroding stone cultural relics. In order to solve the problem of light radiation and pollutant corros...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/61C09D183/04C09D7/61
CPCC04B41/61C09D183/04C09D7/61C08K2201/011C08K2003/2241C08K3/22C04B41/5041C04B41/4961C04B41/4535C04B41/4515C04B41/0072
Inventor 李文娟
Owner TAIYUAN UNIV OF TECH
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