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Method for synthesizing nano barium hydroxide wall painting reinforcing agent

A technology of barium hydroxide and reinforcing agent, applied in the direction of calcium/strontium/barium oxide/hydroxide, nanotechnology, nanotechnology, etc., can solve problems such as insufficient melting effect, limited penetration ability, small contact area, etc. , to achieve enhanced kinetic stability, simple components, and high surface activity

Inactive Publication Date: 2020-09-01
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditional inorganic lime water treatment methods are usually more compatible with murals physically and chemically, but due to their large particle size, low solubility in water, limited penetration ability, small contact area with air, and low utilization, usually Can produce insufficient melting effect, so repeated application is required to achieve the effect

Method used

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  • Method for synthesizing nano barium hydroxide wall painting reinforcing agent
  • Method for synthesizing nano barium hydroxide wall painting reinforcing agent
  • Method for synthesizing nano barium hydroxide wall painting reinforcing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 24g BaCl 2 2H 2 O was dissolved in 900 mL of deionized water to obtain BaCl with a mass concentration of 2.6% 2 aqueous solution; 16 mL of ammonia water with a mass concentration of 28% was diluted to 100 mL with deionized water to obtain ammonia water with a mass concentration of 3.9%; under stirring, the above-mentioned ammonia water with a mass concentration of 3.9% was slowly added dropwise to a mass concentration of 2.6 % BaCl 2 In the aqueous solution, after the dropwise addition, continue to stir for 20 minutes, centrifugally wash with saturated barium hydroxide aqueous solution, and vacuum dry at 40°C for 12 hours to obtain nanometer Ba(OH) 2 Powder; 0.5g nanometer Ba(OH) 2 The powder was dispersed in 1L of methanol, and ultrasonically oscillated for 5 minutes to obtain nanometer Ba(OH) 2 Mural reinforcement.

Embodiment 2

[0032] 21g BaCl 2 2H 2 O was dissolved in 900 mL of deionized water to obtain BaCl with a mass concentration of 2.3% 2 aqueous solution; 14mL of ammonia water with a mass concentration of 28% was diluted to 100mL with deionized water to obtain ammonia water with a mass concentration of 3.5%; under stirring, the above-mentioned ammonia water with a mass concentration of 3.5% was slowly added dropwise to a mass concentration of 2.3 % BaCl 2 In the aqueous solution, after the dropwise addition, continue to stir for 15 minutes, centrifugally wash with saturated barium hydroxide aqueous solution, and vacuum dry at 40°C for 12 hours to obtain nanometer Ba(OH) 2 ; 0.5g nanometer Ba(OH) 2 The powder was dispersed in 1L ethanol, and ultrasonically oscillated for 5 minutes to obtain nanometer Ba(OH) 2 Mural reinforcement.

Embodiment 3

[0034] 26g BaCl 2 2H 2 O was dissolved in 900 mL of deionized water to obtain BaCl with a mass concentration of 2.8% 2 aqueous solution; 18mL of ammonia water with a mass concentration of 28% was diluted to 100mL with deionized water to obtain ammonia water with a mass concentration of 4.3%; under stirring, the above-mentioned ammonia water with a mass concentration of 4.3% was slowly added dropwise to a mass concentration of 2.8% % BaCl 2 In the aqueous solution, after the dropwise addition, continue to stir for 30 minutes, centrifugally wash with saturated barium hydroxide aqueous solution, and vacuum dry at 40°C for 12 hours to obtain nanometer Ba(OH) 2 ; 0.5g nanometer Ba(OH) 2 The powder was dispersed in 1L of isopropanol, and ultrasonically oscillated for 5 minutes to obtain nanometer Ba(OH) 2 Mural reinforcement.

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Abstract

The invention discloses a method for synthesizing a nano barium hydroxide wall painting reinforcing agent. The method comprises the steps that barium hydroxide produced by a reaction of ammonia waterand barium chloride is selected, the obtained barium hydroxide has a small particle size of 5-10 nm, so that the solubility, permeability and utilization rate of the barium hydroxide are greatly improved; and alcohols are used as solvents to achieve the effect of inhibiting particle aggregation, so that deposition is slowed down. The preparation method is simple, no demand is required for a synthesis environment, the method is simple and easy, high in repeatability and yield, and is suitable for field operations and industrial large-scale production; the prepared nano-scale barium hydroxide has a high specific surface area and high active sites, and compared with commercial barium hydroxide, the nano-scale barium hydroxide exhibits a smaller chromatic aberration change and better reinforcement effect in the protection of murals, especially for the desalination and transformation of crispy murals.

Description

technical field [0001] The invention belongs to the technical field of cultural relics protection, and in particular relates to a synthesis method of a nano barium hydroxide mural reinforcement agent. Background technique [0002] Mural painting is one of the oldest art forms. Mural painting occupies an important historical position in our country. We can often learn important information such as productivity, production level and national strength at that time through the painting content of mural painting. The protection of mural painting is important in the protection of cultural relics. Domains are a complex issue because of their hierarchy and their determination as architectural structures, many factors can affect their preservation, such as: the architectural structure itself, water and salt movement and exposure to light, multifactorial Deterioration often acts synergistically, and various deterioration mechanisms can act on different mural layers, leading to many al...

Claims

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Application Information

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IPC IPC(8): B44D7/00C01F11/02B82Y30/00
CPCB44D7/00B82Y30/00C01F11/02C01P2004/04C01P2004/64
Inventor 李玉虎傅鹏特日格乐冯普
Owner SHAANXI NORMAL UNIV
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