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Calcium phosphate biomineralization reinforcing method for stone and stone cultural relics

A technology of biomineralization and stone cultural relics, applied in the field of calcium phosphate biomineralization reinforcement, can solve problems such as unsatisfactory expectations and unsatisfactory stone protection effects, and achieve superior weather resistance, improved stain resistance, and improved water resistance The effect of the ability to decompose

Inactive Publication Date: 2009-03-18
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Despite the many advantages of organic polymers, the protective effect on stone is still unsatisfactory
The main problems are: 1) The actual effective life of organic polymer materials in the wild is generally only a few years, at most 20 or 30 years, which cannot meet people's expectations
Application No. 00119382.1 discloses a protection method for inorganic materials of stone and stone cultural relics, but this method is limited to calcium-containing stone and stone cultural relics, and belongs to the category of surface protection materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The chondroitin sulfate and deionized water are mixed in advance at a mass percentage of 1% to form a chondroitin sulfate organic template solution. Add 0.01 mol / L ammonium hydrogen phosphate solution and 0.01 mol / L calcium chloride solution into deionized water dropwise according to the Ca / P molecular ratio of 1.67, and obtain a calcium phosphate supersaturated solution after filtration.

[0018] Wash the white marble marble with clean water to remove floating dust, soak it with ethanol as a cleaning agent and dry it, then spray the prepared chondroitin sulfate organic template solution to make it flow naturally on the surface of the stone. A good calcium phosphate supersaturated solution is allowed to flow naturally, so that a calcium phosphate biomineralized reinforcement protective layer that is tightly combined with the rock base and does not affect the color, feel and gloss of the original white marble marble can be obtained. Stain resistance (ink) performance is ...

Embodiment 2

[0021] Same as Example 1, except that the calcium phosphate supersaturated solution sprayed on the surface of the marble sample and permeated on the surface of the degraded rock imitation sample is changed to alternately use equal volumes of 0.01mol / L phosphate ion solution and 0.01mol / L calcium Spray and infiltrate the ionic solution. As a result, the stain resistance of the marble sample is basically the same as that of Example 1, and the acid resistance is slightly reduced; the reinforcement effect of the imitation sample of degraded rock is basically the same as that of Example 1.

Embodiment 3

[0023] Same as Example 1, except that the reinforcement method of the imitation sample of the degraded rock is changed from "surface penetration" to "direct mixing", that is, when imitating the sample, mix 15mL equal volumes of chondroitin sulfate organic template solution and calcium phosphate supersaturated solution with calcium carbonate Granules and powder are directly mixed, and the compressive strength of the degraded rock imitation sample can be increased by 400% after reinforcement treatment, and the water immersion resistance is slightly lower than Example 1.

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Abstract

The invention discloses a calcium phosphate biological mineralizing reinforcing method of stone and stony cultural relics, which comprises the following steps: cleaning stone surface through solvent; adopting biological amphipathic functional compound solution as stone surface predisposed organic mould; making the surface of stone material possess functional group; using supersaturated solution of calcium phosphate to penetrate; inducing calcium phosphate to grow crystal on the functional group directionally; connecting loose rock particle; protecting stone surface.

Description

technical field [0001] The invention relates to a calcium phosphate biomineralization reinforcement method for stone materials and stone cultural relics. Background technique [0002] Large-scale stone carvings, stone carvings, monuments and other stone components, as well as many stone monuments, are mostly exposed to the natural weathering environment. Years of rain, snow, wind, frost and environmental pollution have gradually deteriorated and eroded the rock surface. Although the most fundamental protection measure is to control the environment, many environmental factors cannot be completely removed, and it is also impossible to transfer those stone monuments and buildings that are prone to erosion to places where there is no external influence. In order to preserve the physical carrier of surface cultural information, necessary protective treatment has to be carried out on the surface of some endangered stone materials. [0003] Currently, the simplest protective treat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B41/45C04B41/50
CPCC04B41/5015C04B41/009
Inventor 张秉坚刘强
Owner ZHEJIANG UNIV
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