A kind of freeze-dried adhesive transparent coating for protection of masonry cultural relics and preparation method thereof
A technology of transparent coatings and freeze-dried adhesives, which is applied in the direction of reflection/signal coatings, coatings, etc., can solve the problems of affecting the preservation life and reducing the strength of masonry cultural relics, so as to prevent stress damage, good compatibility, and reduce The effect of the magnitude of the temperature change
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Embodiment 1
[0033] (1) Preparation of lyophilized gel powder dispersion: add SiO in the container 2 The lyophilized rubber powder is ultrasonically dispersed in water, and then a silane coupling agent is added to obtain a lyophilized rubber powder dispersion by grinding; , 20% silane coupling agent, the rest is water;
[0034] (2) Preparation of lyophilized adhesive transparent coating: the lyophilized adhesive powder dispersion obtained in step (1) is mixed with film-forming material silica sol, leveling agent polyether modified polydimethylsiloxane, and wetting agent The polyether modified organosilicon compound and the defoamer n-butanol are fully mixed and stirred evenly to obtain the target product; wherein, the dosage of each component is proportioned as follows according to mass percentage: freeze-dried rubber powder dispersion: 10%, film-forming Substance silica sol: 20%, leveling agent polyether modified polydimethylsiloxane: 0.01%, wetting agent polyether modified organosilicon...
Embodiment 2
[0037] (1) Preparation of freeze-dried rubber powder dispersion: add freeze-dried rubber powder in the container, ultrasonically disperse in water, then add titanate coupling agent, and obtain the freeze-dried rubber powder dispersion by grinding; The dosage of each component is proportioned as follows according to mass percentage: 10% lyophilized gel powder, 5% titanate coupling agent, and the rest is water; the composition ratio of the lyophilized gel powder is: SiO 2 Lyophilized gel: 5%; TiO 2 Freeze-dried gel: 5%.
[0038] (2) Preparation of lyophilized adhesive transparent coating: the lyophilized adhesive powder dispersion liquid obtained in step (1) and film-forming material aluminosilicate, leveling agent polyether modified polydimethylsiloxane, moistening agent The wet agent polyether modified organosilicon compound and the defoamer n-butanol are fully mixed and stirred evenly to obtain the target product; wherein, the dosage of each component is proportioned as foll...
Embodiment 3
[0041] (1) Preparation of freeze-dried rubber powder dispersion: add freeze-dried rubber powder in the container, ultrasonically disperse in water, then add silane coupling agent, adopt the method of grinding to obtain freeze-dried rubber powder dispersion; The dosage is as follows according to mass percentage: 25% lyophilized gel powder, 10% silane coupling agent, and the rest is water; the composition ratio of the lyophilized gel powder is: SiO 2 Freeze-dried gel: 15%; TiO 2 Freeze-dried gel: 5%; ZnO freeze-dried gel: 3%; Al 2 o 3 Lyophilized gel: 2%.
[0042](2) Preparation of freeze-dried glue transparent coating: the freeze-dried glue powder dispersion liquid obtained in step (1) and film-forming substance phosphate, leveling agent polyether modified polydimethylsiloxane, wetting agent The polyether-modified organosilicon compound and the defoamer n-butanol are fully mixed and stirred evenly to obtain the target product; wherein, the dosage of each component is proport...
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