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Modified bentonite-based hydrogel precursor solution for silicate cultural relic protection, preparation method and use method thereof

A precursor solution, a technology for cultural relics protection, applied in the direction of amide/imide polymer adhesives, non-polymer adhesive additives, adhesive types, etc. and other problems, to achieve good resistance to dry and wet cycles and salt crystallization aging cycles, excellent air permeability, and good water-carrying properties.

Active Publication Date: 2022-08-09
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the long-term influence of natural factors, most of the silicate cultural relics have weathered and fallen off, and there is an urgent need for suitable materials to effectively protect them
However, the current protective materials are mostly nano protective coatings, epoxy materials, fluorine-containing materials and silane materials, etc., and there is no mention of the protection of hydrogel materials.

Method used

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  • Modified bentonite-based hydrogel precursor solution for silicate cultural relic protection, preparation method and use method thereof
  • Modified bentonite-based hydrogel precursor solution for silicate cultural relic protection, preparation method and use method thereof
  • Modified bentonite-based hydrogel precursor solution for silicate cultural relic protection, preparation method and use method thereof

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Embodiment approach

[0030] As a specific embodiment of the present invention, a method for preparing a modified bentonite-based hydrogel precursor solution for silicate cultural relics protection, comprising the following steps:

[0031] Step 1: Place the bentonite in an oven at 100-110°C for drying, disperse the dried bentonite in a mixed solution of deionized water and methanol to form a first dispersion system, and add ammonia water to the first dispersion system , at room temperature with a stirring speed of 1000-1500r / min, stirring for 1-3h to form a second dispersion system;

[0032] Specifically, the mass ratio of bentonite to the mixed solution of deionized water and methanol is 0.9%-1.5%, the volume ratio of deionized water to methanol is 4:1, and the volume ratio of ammonia water to the first dispersion system is 3.5%-7% %.

[0033] Step 2: Add vinyltrimethoxysilane to the second dispersion system for reaction, react at 70-80°C for 20-30h, wash, centrifuge and dry the reaction product ...

Embodiment 1

[0043] A method for preparing a modified bentonite-based hydrogel precursor solution for the protection of silicate cultural relics, comprising the following steps:

[0044] Step 1: Place the bentonite in an oven at 110°C for drying, disperse the dried bentonite in a mixed solution of deionized water and methanol to form a first dispersion system, add ammonia water to the first dispersion system, and leave at room temperature. Next, at a stirring speed of 1000r / min, stir for 3h to form a second dispersion system;

[0045] Specifically, the mass ratio of bentonite to the mixed solution of deionized water and methanol is 1.5%, the volume ratio of deionized water to methanol is 4:1, and the volume ratio of ammonia water to the first dispersion system is 7%.

[0046] Step 2: Add vinyltrimethoxysilane to the second dispersion system for reaction, react at 70°C for 20h, wash, centrifuge and dry the reaction product to obtain modified bentonite, such as figure 1 shown;

[0047] Spe...

Embodiment 2

[0057] A method for preparing a modified bentonite-based hydrogel precursor solution for the protection of silicate cultural relics, comprising the following steps:

[0058] Step 1: Place the bentonite in an oven at 110°C for drying, disperse the dried bentonite in a mixed solution of deionized water and methanol to form a first dispersion system, add ammonia water to the first dispersion system, and leave at room temperature. Next, at a stirring speed of 1500r / min, stir for 2h to form a second dispersion system;

[0059] Specifically, the mass ratio of bentonite to the mixed solution of deionized water and methanol is 1%, the volume ratio of deionized water to methanol is 4:1, and the volume ratio of ammonia water to the first dispersion system is 3.5%.

[0060] Step 2: Add vinyltrimethoxysilane to the second dispersion system for reaction, react at 75°C for 24h, wash, centrifuge and dry the reaction product to obtain modified bentonite, such as figure 1 shown;

[0061] Spe...

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Abstract

The invention discloses a modified bentonite-based hydrogel precursor solution for silicate cultural relic protection, a preparation method and a use method thereof, and the preparation of the modified bentonite-based hydrogel precursor solution and the deionization of tetramethylethylenediamine Water dilution solution; mix the modified bentonite-based hydrogel precursor solution and the deionized water dilution solution of tetramethylethylenediamine evenly, and mix the modified bentonite-based hydrogel precursor solution with tetramethylethylenediamine. The mixed solution of deionized water dilution solution is applied to the part of the silicate cultural relic to be repaired, the repaired part of the silicate cultural relic is attached to the part to be repaired of the silicate cultural relic, and the modified bentonite-based hydrogel precursor The mixed solution of the solution and the deionized water dilution solution of tetramethylethylenediamine naturally forms a modified bentonite-based hydrogel, which realizes the bonding and repair of silicate cultural relics.

Description

technical field [0001] The invention belongs to the technical field of silicate cultural relic protection materials, and particularly relates to a modified bentonite-based hydrogel precursor solution for silicate cultural relic protection, a preparation method and a use method thereof. Background technique [0002] Silicate materials are widely used in architectural decoration, etc. The cultural relics using silicate materials as raw materials are widely distributed in my country and constitute an important part of historical and cultural heritage. However, due to the long-term influence of natural factors, most of the silicate cultural relics have weathered and fallen off, and suitable materials are urgently needed to effectively protect them. However, the current protective materials are mostly nano-protective coatings, epoxy materials, fluorine-containing materials, and silane-based materials, etc., and the protection of hydrogel-based materials is not mentioned. SUMMAR...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F292/00C08F220/56C08F222/38C04B41/68
CPCC04B41/68C04B41/5037C08F220/56C08F2/44C08K9/06C08K3/346C09J133/26C09J11/04C09J11/06C04B41/5007C04B41/46C04B41/4539C04B41/45C08F222/385C08K5/17
Inventor 潘爱钊史承钰和玲
Owner XI AN JIAOTONG UNIV
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