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Preparation method for SiO2/protein composite material and composite material prepared by the same

A composite material and protein technology, which is applied in the field of organic-inorganic composite materials and composite materials, can solve problems such as high cost, poor material performance, and difficulty in compounding organic and inorganic components, and achieve the effect of improving mechanical properties

Inactive Publication Date: 2015-06-10
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these conventional preparation methods usually require heat treatment or the use of expensive additives to realize the composite of inorganic-organic materials, which is costly and unfavorable for popularization, and because the artificial synthesis process cannot be carried out on a microscopic scale, the organic components in the synthesized composite materials It is difficult to uniformly compound with inorganic components at the nanoscale, so that the performance of artificially synthesized materials cannot be compared with natural biological materials

Method used

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  • Preparation method for SiO2/protein composite material and composite material prepared by the same
  • Preparation method for SiO2/protein composite material and composite material prepared by the same
  • Preparation method for SiO2/protein composite material and composite material prepared by the same

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Take 0.2g amorphous SiO 2 Powder (particle size of powder 50-100nm, crystallization temperature 900-1000°C), at room temperature and 6MPa, it is molded in an axial direction (a disc with a diameter of 10mm and a thickness of 1mm is produced), and then the prepared disc After 180MPa cold isostatic pressing to obtain SiO 2 Prefabricated blocks. The prefabricated block was implanted between the mantle and the shell of the crested clam as a bead core, and the cored clam was placed in fresh water for cultivation. After 30 days of cultivation, the Take out the pearl nucleus covered with nacre from the clam, remove the nacre growing on the surface of the pearl nucleus, and obtain white or translucent SiO 2 / protein composites.

[0026] For the amorphous SiO used in this embodiment 2 Prefabricated block for SEM test, photo as figure 1 As shown, it can be seen that amorphous SiO 2 The average particle size of silicon dioxide in the prefabricated block is 50-100nm, and no g...

Embodiment 2

[0029] Amorphous SiO 2 Powder 0.3g (powder particle size 50-100nm, crystallization temperature 900-1000 ℃), at room temperature, 7MPa by axial molding compression molding (diameter 10mm, thickness 1.5mm disk), and then made The wafers were formed by 180MPa cold isostatic pressing to obtain SiO 2 Prefabricated blocks. Then the prefabricated block is implanted between the mantle and the shell of the pleat clam as a bead core, and the cored pleat clam is put into fresh water for cultivation. After 60 days of cultivation, the The bead nucleus that has been covered with nacre is taken out from the clam body. Remove the nacre layer grown on the surface of the bead core to obtain white or translucent SiO 2 / protein composites.

[0030] Adopt XRD method to detect the obtained SiO of the present embodiment 2 / protein composite material, its phase composition is an amorphous silica phase, a crystal-free silica phase, such as figure 2 as shown in b. SiO obtained by SEM analysis ...

Embodiment 3

[0032] Amorphous SiO 2 Powder 0.5g (powder particle size 50-100nm, crystallization temperature 900-1000 ℃), at room temperature, 10MPa by axial molding compression molding (diameter 10mm, thickness 2mm disk), and then the prepared After the wafer is pressed by 180MPa cold isostatic pressing, SiO 2 Prefabricated blocks. Then the prefabricated block is implanted between the mantle and the shell of the pleated crested clam as a bead nucleus, and the planted pleated crested clam is cultured in fresh water. After 90 days of cultivation, the The bead nucleus that has been covered with nacre is taken out from the clam body. Remove the nacre layer grown on the surface of the bead core to obtain white or translucent SiO 2 / protein composites.

[0033] Adopt XRD method to detect the obtained SiO of the present embodiment 2 / protein composite material, its phase composition is amorphous silica phase, non-crystalline silica phase (see attached figure 2 c). SEM analysis revealed t...

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Abstract

The invention relates to a preparation method for SiO2 / protein composite material and composite material prepared by the same. The preparation method includes steps that (1) preparing an amorphous SiO2 block body; (2) preparing SiO2 / protein composite material, to be specific, using the prefabricated block body of the step (1) as pearl core, embedding between the pallium and shell of a cristaria plicata, cultivating the cristaria plicata in fresh water, taking out the cristaria plicata after 30 to 90 days, obtaining the pearl core packaged by a pearl layer, and removing the pearl layer at the outer surface of the pearl core to obtain the SiO2 / protein composite material. Because the preparation method uses a pure biological system environment, the synthesis process of the SiO2 / protein composite material is performed under a normal temperature and normal pressure, the ceramic-like dense structure is obtained through biological mineralization, the SiO2 particle and protein distribution is uniform in nanoscale, the mechanical property is improved, and the crystallization stability is good.

Description

technical field [0001] The invention belongs to the technical field of organic-inorganic composite materials, in particular to a SiO 2 A method for preparing the protein / protein composite material and the prepared composite material. Background technique [0002] Natural biological materials such as bones, shells and teeth are formed by organisms through hundreds of millions of years of evolution in order to adapt to the environment. Such materials are synthesized by biological systems through a series of complex mechanisms under natural conditions, and their unique structures and properties have incomparably excellent properties of synthetic materials. For example, the nacre of shells is composed of aragonite crystal layers at the nanoscale It is uniformly embedded in organic matrix such as protein, and its toughness is more than 3000 times that of natural aragonite. It can be seen that organic-inorganic composite materials have broad application prospects. Therefore, sim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L89/00C08K3/36A01K61/00
CPCY02A40/81
Inventor 傅正义冷晓轩曾辉解晶晶王为民王皓张金咏张帆
Owner WUHAN UNIV OF TECH