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Super-strength transparent imitated shell composite thin film and preparation method thereof

A composite film and shell imitation technology, which is applied in the field of bionics, can solve the problem of not being able to imitate shell organic matter bridges in a green and fast manner, and achieve the effects of low cost of raw materials, broad application prospects, and simple and easy operation.

Inactive Publication Date: 2014-07-16
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems in the prior art that cannot imitate the organic matter bridging of shells, the micro-protrusions on the surface of the inorganic phase and the "brick-mud" structure in the prior art, and propose a fast and green preparation of super-strength transparent imitation shell composites. thin film method

Method used

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  • Super-strength transparent imitated shell composite thin film and preparation method thereof
  • Super-strength transparent imitated shell composite thin film and preparation method thereof
  • Super-strength transparent imitated shell composite thin film and preparation method thereof

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preparation example Construction

[0027] The invention provides a super-strength transparent imitation shell composite film and a preparation method thereof. The preparation method specifically includes the following steps:

[0028] The first step is to prepare MMT colloid;

[0029] Dissolving MMT in distilled water to form a 0.2-2wt% MMT aqueous solution, then stirring with a magnetic stirrer for at least 1 week, centrifuging the supernatant obtained is the MMT colloid peeled into a single piece;

[0030] In the second step, the obtained MMT colloid and ALG aqueous solution are mixed, stirred until fully mixed to obtain a mixed solution; the mass percent concentration of the ALG aqueous solution is 0.1 to 1 wt %; the mass ratio of MMT and ALG in the mixed solution is 1:9 to 1 :1.

[0031] In the third step, add CaCl to the mixed solution in the second step 2 , stir to make it well mixed, since Ca 2+ Coupled with ALG to form a figure 1 The egg-box structure shown in; the CaCl 2 The mass of ALG is 10-200% ...

Embodiment 1

[0035] In the first step, 0.2g of MMT was dissolved in 100g of distilled water to form a 0.2wt% MMT aqueous solution, then stirred with a magnetic stirrer for 1 week, and the supernatant obtained by centrifugation was the MMT colloid peeled into a single piece;

[0036] In the second step, the obtained MMT supernatant is mixed with 1 wt% ALG aqueous solution, and stirred until fully mixed to obtain a mixed solution; the mass ratio of MMT and ALG in the mixed solution is 1:9.

[0037] In the third step, add an appropriate amount of CaCl to the mixed solution in the second step 2 , stir to make it well mixed, since Ca 2+ Coupled with ALG to form a figure 1 The egg box structure shown in; the added CaCl 2 The quality is 200% of the ALG quality.

[0038] In the fourth step, the solution is vacuum filtered to obtain the super-strength transparent imitation shell composite film of the present invention.

[0039] Under the action of vacuum, the MMT sheet and the egg box structure f...

Embodiment 2

[0041] In the first step, 1g of MMT was dissolved in 100g of distilled water to form a 1wt% MMT aqueous solution, then stirred with a magnetic stirrer for 1 week, and the supernatant obtained by centrifugation was the MMT colloid peeled into a single piece;

[0042] In the second step, the obtained MMT supernatant and 1wt% ALG aqueous solution were mixed and stirred until fully mixed to obtain a mixed solution; the mass ratio of MMT and ALG in the mixed solution was 1:1.

[0043] In the third step, add an appropriate amount of CaCl to the mixed solution in the second step 2 , stir to make it well mixed, since Ca 2+ Coupling with ALG to form an egg-box structure; the added CaCl 2 The quality is 100% of ALG quality.

[0044] In the fourth step, the solution is vacuum filtered to obtain the super-strength transparent imitation shell composite film of the present invention.

[0045] Under the action of vacuum, the MMT sheet and the egg box structure formed by the coupling form ...

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Abstract

The invention discloses a super-strength transparent imitated shell composite thin film and a preparation method thereof, and belongs to the technical field of bionics. The preparation method comprises the steps of mixing MMT colloid and ALG aqueous solution, and adding calcium chloride into the mixed solution to form an egg tray structure; and then performing vacuum filtration to obtain the super-strength transparent imitated shell composite thin film. The imitated shell thin film with a 'brick-mud' structure, an inorganic phase surface micro-protrusion interlocking structure and an organic matter bridging structure are prepared by using the sodium alginate and the montmorillonite as raw materials, the thin film has excellent mechanical property, the tensile strength is up to 243MPa, the average deformation is 5.38%, the thin film has excellent transparency, and the transmittance of visible light is up to over 88%.

Description

technical field [0001] The invention belongs to the field of bionic technology, and specifically refers to a super-strength transparent imitation shell composite film and a preparation method thereof, which have broad application prospects in aerospace, military, civil engineering, machinery and other fields. Background technique [0002] The perfect structure created by nature in the process of evolution has attracted the attention and research interest of many researchers, motivating them to imitate nature. Among them, shell is a natural organic / inorganic layered composite material. Its unique multi-level "brick-mud" assembly structure endows it with excellent mechanical properties of light weight, high strength and good toughness. However, almost all researchers are only imitating the "brick-mud" structure of shells, ignoring the improvement of the mechanical properties of shells by the interlocking of micro-protrusions on the surface of the inorganic phase, organic bridg...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L5/04C08K3/34C08K3/16
Inventor 殷鹏刚梁本亮郭林
Owner BEIHANG UNIV
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