Method for preparing inorganic-organic anti-weathering composite material for protecting stone relics

A technology of stone cultural relics and composite materials, which is applied in the field of preparation of inorganic-organic anti-weathering protection composite materials, can solve the problems of complex preparation process, high cost, and sensitive aesthetic effect, and achieve simple and easy process, salt resistance and Acid corrosion air permeability, does not significantly reduce the effect of air permeability

Inactive Publication Date: 2012-08-01
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its preparation process is complex and costly
At the same time, because their content in organic matter is sensitive to the aesthetic effect of the stone cultural relics surface including discoloration, it cannot effectively solve the shortcomings of the aesthetic effect of stone cultural relics, such as the optical rotation effect and discoloration, which are common in organic weatherproof materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Step 1: Preparation of rock powder

[0030] Taking the world cultural heritage-Yungang Grottoes as the protection object, sandstone stones collected within one kilometer of the Yungang Grottoes Reserve in Datong, Shanxi Province are used as raw materials. Its main chemical composition is mainly quartz and alumina, the content of carbonate cement is more than 10%, and its main mineral composition is ferrous calcite and ferrous dolomite. Crush the stones mechanically or manually, pass through a 300-mesh sieve, and put them into the ball mill barrel of the high-energy ball mill.

[0031] The second step: preparation of nano rock powder

[0032]In the high-energy ball mill, the ball-to-material ratio was 30:1, and the speed was controlled at 500 rpm for 40 hours of ball milling. The chemical composition of the prepared nano-rock powder is consistent with that of the collected stones, and its average particle size is 100nm.

[0033] The third step: take a certain weight o...

Embodiment 2

[0036] Step 1: Preparation of rock powder

[0037] Taking the world cultural heritage-Longmen Grottoes as the protection object, limestone stones collected within one kilometer of the Longmen Grottoes Reserve in Luoyang, Henan Province are used as raw materials. Its main components are carbonate rocks dominated by calcite and impurities such as clay and silt. Crush the stones mechanically or manually, pass through a 230-mesh sieve, and put them into the ball mill bucket of the high-energy ball mill.

[0038] The second step: preparation of nano rock powder

[0039] In the high-energy ball mill, the ball-to-material ratio was 40:1, and the speed was controlled at 550 rpm for 45 hours. The color of the powder is roughly the same as that of the Longmen Grottoes stone relics, and its average particle size is 145nm.

[0040] The third step: according to the weight fraction of 3.5wt%, take a certain weight of nano-rock powder and organosilicon fluorine such as BYB1002 and BYB1008...

Embodiment 3

[0043] Step 1: Preparation of rock powder

[0044] Taking the world cultural heritage-Yungang Grottoes as the protection object, stones collected within one kilometer of the Yungang Grottoes Reserve in Datong, Shanxi Province are used as raw materials. Its main components are mainly quartz and alumina, the content of carbonate cement is more than 10%, and its main mineral components are ferrous calcite and ferrous dolomite. Crush the stones mechanically or manually, pass through a 300-mesh sieve, and put them into the ball mill barrel of the high-energy ball mill.

[0045] The second step: preparation of nano stone powder

[0046] In the high-energy ball mill, the ball-to-material ratio was 35:1, and the speed was controlled at 450 rpm for 60 hours of ball milling. The color of the prepared nano-rock powder is roughly the same as that of the Yungang Grottoes' stone relics, and its average particle size is 80nm.

[0047] The third step: the nano-rock powder prepared in the s...

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Abstract

The invention belongs to the technical field of anti-weathering protection materials of stone relics, and discloses a method for preparing inorganic-organic anti-weathering composite materials for protecting the stone relics. The method comprises the following steps of: taking rock at the position where the object to be protected-the stone relic body exists, sieving after smashing, ball-milling by putting the smashed rock in a high-energy ball mill, and obtaining nanometer rock powder with the average grain diameter being 50-150 nm; and obtaining mixed liquor by mixing the nanometer rock powder with an organic silicon type anti-weathering protection agent according to the ratio in weight percentage of the nanometer rock powder being 0.2-4%, then carrying out high-energy ball milling, carrying out ultrasound dispersion after the high-energy ball milling to ensure that nanometer rock powder grains are uniformly dispersed in the organic silicon type anti-weathering protection agent. The method for preparing the inorganic-organic anti-weathering composite materials for protecting the stone relics, disclosed by the invention, is simple in technology, the anti-weathering composite materials prepared by the adoption of the method has a better compatibility with the stone relic body and is not sensitive to the appearances of the stone relics, and the affect on aesthetical effects, such as the appearances of the stone relics are subjected to discoloration due to the dosage of the rock powder, cannot be caused.

Description

technical field [0001] The invention relates to a preparation method of a composite material used for weathering protection of stone cultural relics, in particular to a preparation method of an inorganic-organic weathering protection composite material used for stone cultural relics. Background technique [0002] Outdoor immovable stone cultural relics such as cave temples, cliff inscriptions and inscriptions are the essence of many precious historical and cultural heritages of the Chinese nation. The Dunhuang Grottoes, Yungang Grottoes, Longmen Grottoes, and Dazu Grottoes, which were listed in the "World Heritage List" in 2001, are outstanding representatives of many grottoes in my country. However, there are three major problems of flooding, structural instability, and surface weathering in this kind of cultural relics, which are becoming more and more serious and need to be solved urgently. [0003] The basic requirements for materials used for weather protection of ston...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/22
Inventor 刘绍军万勇波
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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