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Cage-type POSS-linear siloxane hybrid material suitable for sandstone cultural relic protection, and preparation method and application thereof

A technology for cultural relic protection and hybrid materials, applied in the direction of adhesives, etc., can solve the problems of immovability, can not fully meet the needs of such cultural relics protection, large size, etc. Effect

Active Publication Date: 2021-11-30
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of these sandstone cave cultural relics are huge and immovable, and most of the existing materials cannot fully meet the protection needs of such cultural relics

Method used

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  • Cage-type POSS-linear siloxane hybrid material suitable for sandstone cultural relic protection, and preparation method and application thereof
  • Cage-type POSS-linear siloxane hybrid material suitable for sandstone cultural relic protection, and preparation method and application thereof
  • Cage-type POSS-linear siloxane hybrid material suitable for sandstone cultural relic protection, and preparation method and application thereof

Examples

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preparation example Construction

[0028] A kind of preparation method of cage type POSS-linear siloxane hybrid material suitable for the protection of sandstone cultural relics of the present invention comprises the following steps:

[0029] Step 1: Dissolve the cage-type octaglycidyl POSS in a mixed solution of acetone and absolute ethanol, stir at room temperature until the solution is colorless, transparent and uniform, and obtain a cage-type octaglycidyl POSS dispersion solution;

[0030] Preferably, the mass fraction of the cage-type octaglycidyl POSS in the mixed solution of acetone and absolute ethanol is 10% to 30%, the mass ratio of acetone and absolute ethanol is 1: (1-3), and the cage-type octaglycidyl POSS The concentration of the glycerin-based POSS dispersion solution is 0.012mmol / ml-0.059mmol / ml.

[0031] Step 2: Add catalytic ring-opening agent and linear amino PDMS to the cage-type octaglycidyl POSS dispersion solution, stir and heat to 45°C-55°C, and carry out ring-opening reaction. The react...

Embodiment 1

[0035] A method for preparing a cage-type POSS-linear siloxane hybrid material suitable for the protection of sandstone cultural relics, comprising the following steps:

[0036] Step 1: Dissolve the cage-type octaglycidyl POSS in a mixed solution of acetone and absolute ethanol, stir at room temperature until the solution is colorless, transparent and uniform, and obtain a cage-type octaglycidyl POSS dispersion solution;

[0037] Wherein, the mass fraction of the cage-type octaglycidyl POSS in the mixed solution of acetone and absolute ethanol is 20%, the mass ratio of acetone and absolute ethanol is 1:1, and the concentration of the cage-type octaglycidyl POSS dispersion solution is 0.035mmol / ml.

[0038] Step 2: Add tetramethylethylenediamine and linear amino PDMS to the cage-type octaglycidyl POSS dispersion solution, stir and heat to 50°C, and perform ring-opening reaction. The reaction time is 8 hours, and the cage-type POSS-linear Siloxane hybrid material; the specific ...

Embodiment 2

[0047] A method for preparing a cage-type POSS-linear siloxane hybrid material suitable for the protection of sandstone cultural relics, comprising the following steps:

[0048] Step 1: Dissolve the cage-type octaglycidyl POSS in a mixed solution of acetone and absolute ethanol, stir at room temperature until the solution is colorless, transparent and uniform, and obtain a cage-type octaglycidyl POSS dispersion solution;

[0049] Among them, the mass fraction of the cage-type octaglycidyl POSS in the mixed solution of acetone and absolute ethanol is 10%, the mass ratio of acetone and absolute ethanol is 1:3, and the concentration of the cage-type octaglycidyl POSS dispersion solution is 0.012mmol / ml.

[0050] Step 2: Add tetramethylethylenediamine and linear amino PDMS to the cage-type octaglycidyl POSS dispersion solution, stir and heat to 45°C, and perform ring-opening reaction. The reaction time is 12 hours to obtain cage-type POSS-linear Siloxane hybrid materials;

[005...

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Abstract

The invention discloses a cage-type POSS-linear siloxane hybrid material suitable for sandstone cultural relic protection and a preparation method and application thereof. The preparation method comprises the steps: dissolving cage-type octaglycidyl POSS in a mixed solution of acetone and absolute ethyl alcohol and evenly dispersing, and obtaining a cage-type octaglycidyl POSS dispersion solution; and adding a catalytic ring-opening agent and linear amino PDMS into the cage type octa-glycidyl POSS dispersion solution, stirring and heating to carry out a ring-opening reaction so as to obtain the cage type POSS-linear siloxane hybrid material. The protection requirements of sandstone cultural relics can be met.

Description

technical field [0001] The invention belongs to the technical field of sandstone cultural relics protection materials, and in particular relates to a cage-type POSS-linear siloxane hybrid material suitable for the protection of sandstone cultural relics, a preparation method and an application thereof. Background technique [0002] At present, sandstone cultural relics are widely distributed in grotto cultural relics in my country, and occupy an important position in stone cultural relics. There are many ways and types of damage to sandstone cultural relics, among which the most important damage is caused by weathering and erosion. There are two main reasons for weathering damage. On the one hand, it is formed by long-term exposure to the natural environment; on the other hand, sandstone cultural relics are formed by feldspar, quartz, sand grains and cement, and their structure is loose and porous, soft The layered structure caused by hard inclusions has many layers and hig...

Claims

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Application Information

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IPC IPC(8): C08G77/44C09J183/10
CPCC08G77/44C09J183/10
Inventor 和玲卢心愿史承钰陈照宇梁军艳潘爱钊
Owner XI AN JIAOTONG UNIV
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