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A kind of preparation method of fluorescent transparent composite material

A technology of composite materials and fluorescent materials is applied in the field of preparation of transparent crab shells, which can solve the problems of non-fluorescence, brittleness, and opaqueness of natural crab shells, and achieve the effect of expanding the scope of application and high light transmittance.

Active Publication Date: 2022-04-05
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Purpose of the invention: This invention is to make rational use of abundant crab shell resources in my country, solve the problems of opaque, non-fluorescent, and fragile natural crab shells, and prepare a transparent composite material with a complete crab shell shape and a fluorescent transparent composite material

Method used

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  • A kind of preparation method of fluorescent transparent composite material
  • A kind of preparation method of fluorescent transparent composite material
  • A kind of preparation method of fluorescent transparent composite material

Examples

Experimental program
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Effect test

Embodiment

[0028] The preparation steps of the fluorescent transparent composite material of the present invention are as follows:

[0029] (1) Select crab shells or crab shell slices in good shape, clean them, and store them in deionized water for later use.

[0030] (2) Use low-concentration acid-base and ethanol solutions to immerse complete crab shells or crab shell slices until the matrix such as calcium carbonate, protein, lipid and pigment is completely removed, and the treated crab shells are stored in absolute ethanol spare.

[0031] (3) After the fluorescent powder is evenly dispersed in the polymer monomer by thermomechanical stirring, it is then polymerized or cured by adding a curing agent.

[0032] (4) Take out the processed crab shells, immerse them in the partially polymerized polymer, and vacuumize and hold the pressure for 15 minutes in a vacuum drying oven, repeat three times, take out the crab shells and wrap them in tin foil, then carry out constant temperature curi...

specific Embodiment 1

[0039] Preparation of Transparent Crab Shell Sheets and Crab Shells Using Resin (EP) as Polymer Matrix

[0040] (1) Select crab shells or crab shell slices in good shape, clean them, and store them in deionized water for later use.

[0041] (2) Place crab shells or crab shell slices in a beaker, soak them in a dilute HCl solution for 12 hours, and repeat more than two times until CaCO is completely removed. 3 ; At 55°C, CaCO will be removed 3The final crab shells or crab shell slices were soaked in the prepared diluted NaOH solution for 2 hours, and repeated more than 4 times to completely remove the protein and lipids in the crab shells; at room temperature, use absolute ethanol to soak the above-mentioned processed The crab shells were kept for more than 12 hours until the pigment in the crab shells was removed and stored in absolute ethanol for later use.

[0042] (3) Add epoxy resin and curing agent with a mass ratio of 3:1 into the mold and mix evenly, and completely im...

specific Embodiment 2

[0044] Preparation of transparent crab shell slices with methyl methacrylate as polymer matrix

[0045] The processing method of removing the matrix in the crab shell is the same as the steps (1) and (2) in Example 1.

[0046] Weigh 0.02g of benzoyl peroxide and 20g of methyl methacrylate into a closed conical flask, heat in a water bath at 85°C until the solution has a significant change in viscosity, quickly take out the conical flask and put it in ice water, and keep Shaking accelerates cooling to obtain prepolymerized methyl methacrylate. Put the processed crab shells into a small beaker, immerse the crab shells with pre-polymerized methyl methacrylate, then put the small beaker in a vacuum drying oven, and keep the pressure for 15 minutes when the vacuum is 0.03MPa. Repeat this step 3 times, and finally maintain the pressure at a vacuum degree of 0.05MPa for 24h. Use tweezers to take out the fully infiltrated crab shell slices, wrap them in tin foil, and put them in an ...

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Abstract

The invention discloses a method for preparing a fluorescent transparent composite material. The fluorescent transparent composite material of the invention is composed of fluorescent powder, a chitin fiber skeleton and a transparent polymer matrix, and the light transmittance can reach 87.32%. The steps of the preparation method are as follows: The natural crab shell is pretreated to remove calcium carbonate, protein, lipid and pigment in the crab shell in turn; the fluorescent powder is evenly dispersed in the polymer monomer by thermomechanical stirring for prepolymerization; the vacuum impregnation method Immerse the crab shells in the pre-polymerized polymer matrix, so that the polymer matrix evenly fills the gaps in the chitin fiber skeleton of the crab shells; take out the crab shells, wrap them in tin foil, and put them in an oven for constant temperature curing until the polymers are completely cured. The fluorescent transparent composite material prepared by the invention not only has high light transmittance, but also has a complete shape of crab shells. The addition of fluorescent powder makes the transparent crab shells present different colors under light and has little influence on the light transmittance.

Description

technical field [0001] The invention relates to a method for preparing a fluorescent transparent composite material, in particular to a method for preparing a fluorescent transparent crab shell piece and a transparent crab shell with a complete structure. Background technique [0002] With the vigorous development of the optoelectronic industry and the urgent need for energy-saving fields, transparent materials are more and more widely used in electronics and energy, and the demand is increasing and their sources are becoming more and more diversified. In recent years, based on the good mechanical properties of wood, a large number of scholars at home and abroad have used the natural cellulose skeleton of wood to prepare flexible and transparent cellulose films, which have shown great potential in the application of electronics. For example, Chinese patent CN110328727A uses ethanol to dissolve lignin at low temperature, keeps the original wood structure intact, utilizes poly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/24C08L63/00C08L33/12C08L5/08
CPCC08J5/24C08J2363/00C08J2405/08C08J2433/12
Inventor 缪建文李敏敏宋国华刘欢
Owner NANTONG UNIVERSITY
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