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Nano barium sulfate/cellulose composite membrane as well as preparation method and application thereof

A nano-barium sulfate and cellulose technology is applied in the field of nano-barium sulfate/cellulose composite membrane and its preparation, which can solve the problem that the particle size of nano-barium sulfate is not very uniform, and achieve long-lasting anti-radiation stability and porosity. Large, easy functional expansion and the effect of the application field

Inactive Publication Date: 2017-05-31
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although cellulose is currently applied to the preparation of radiation-resistant materials, the environmental protection of these radiation-resistant materials needs to be improved, and the particle size of nano barium sulfate and the dispersion on the cellulose matrix are not very uniform.

Method used

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  • Nano barium sulfate/cellulose composite membrane as well as preparation method and application thereof
  • Nano barium sulfate/cellulose composite membrane as well as preparation method and application thereof
  • Nano barium sulfate/cellulose composite membrane as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The preparation of nano barium sulfate / cellulose composite film, concrete steps are as follows:

[0032] 1) Solution preparation: 1.4204g of Na 2 SO 4 and 2.4426 g of BaCl 2 2H 2 O was dissolved in 100ml of ethanol-water solution with a volume fraction of 50%, respectively, to obtain Na with a concentration of 0.1mol / L 2 SO 4 Ethanol-water solution and a concentration of 0.1mol / L BaCl 2 ethanol-water solution;

[0033] 2) to Na 2 SO 4 Ethanol-water and BaCl 2 Ethanol-water solution for optimization: in Na 2 SO 4 Add NH dropwise to ethanol-water solution 3 ·H 2 O until the pH of the solution was 9; in BaCl 2 0.017 g of stearic acid was added to the ethanol-water solution.

[0034] 3) Preparation of nano barium sulfate particles: 100mL Na 2 SO 4 Ethanol-water solution was added dropwise to 100mL BaCl at a rate of 60mL / h 2 ethanol-water solution, and continuously carry out magnetic stirring. After the reaction, continue stirring at constant temperature for...

Embodiment 2

[0041] The preparation of nano barium sulfate / cellulose composite film, concrete steps are as follows:

[0042] 1) Solution preparation: 7.102g of Na 2 SO 4 and 12.213 g of BaCl 2 2H 2 O was dissolved in 100ml of ethanol-water solution with a volume fraction of 50%, respectively, to obtain Na with a concentration of 0.5mol / L 2 SO 4 Ethanol-water solution and a concentration of 0.5mol / L BaCl 2 Ethanol-water solution.

[0043] 2) Preparation of nano-barium sulfate particles: same as step 3) in Example 1.

[0044] 3) Preparation of modified nano-barium sulfate / cellulose solution: same as step 4) in Example 1.

[0045] 4) Preparation of nano-barium sulfate / cellulose composite film: same as step 5) in Example 1.

[0046] After testing, in the obtained nano-barium sulfate / cellulose composite film, the average diameter of nano-barium sulfate particles is 280nm.

Embodiment 3

[0048] The preparation of nano barium sulfate / cellulose composite film, concrete steps are as follows:

[0049] 1) Solution preparation: 7.102g of Na 2 SO 4 and 12.213 g of BaCl 2 2H 2 O was dissolved in 50ml of ethanol-water solution with a volume fraction of 50%, respectively, to obtain Na with a concentration of 1mol / L 2 SO 4 Ethanol-water solution and a concentration of 1mol / L BaCl 2 Ethanol-water solution.

[0050] 2) to Na 2 SO 4 Ethanol-water and BaCl 2 Ethanol-water solution for optimization: in Na 2 SO 4 Add NH dropwise to ethanol-water solution 3 ·H 2 O until the pH of the solution was 9; in BaCl 2 0.017 g of stearic acid was added to the ethanol-water solution.

[0051] 3) Preparation of nano-barium sulfate particles: same as step 3) in Example 1.

[0052] 4) Preparation of modified nano-barium sulfate / cellulose solution: same as step 4) in Example 1.

[0053] 5) Preparation of nano-barium sulfate / cellulose composite film: same as step 5) in Example ...

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Abstract

The invention relates to a nano barium sulfate / cellulose composite membrane with an anti-radiation function as well as a preparation method and application thereof. The nano barium sulfate / cellulose composite membrane is prepared from water body nano barium sulfate and cellulose, wherein nano barium sulfate particles of the water body nano barium sulfate are relatively uniformly dispersed on a basal body of the cellulose; the particle sizes of the nano barium sulfate particles are 30 to 280 nm; the tensile strength of the composite membrane is 24.98 to 51.07 MPa; the composite membrane is of a transparent and porous structure, and the porosity of the composite membrane is 90% or more than 90%. The nano barium sulfate / cellulose composite membrane has the advantages that firstly, the composite membrane is green and environment-friendly; secondly, the agglomeration effect of nanoparticles is reduced, and the nanoparticles are uniformly dispersed on the cellulose basal body; thirdly, the particles can be uniformly dispersed on the cellulose basal body; fourthly, the composite membrane prepared in the invention is high in transparency, large in porosity, non-toxic and non-pollution, has a lasting anti-radiation effect, and is relatively high in stability and uniform in thickness; and fifthly, the composite membrane is applicable to large-scale preparation of anti-radiation cellulose composite membranes.

Description

technical field [0001] The invention belongs to the technical field of natural polymer materials, and mainly relates to a nanometer barium sulfate / cellulose composite film with anti-radiation function and its preparation method and application. Background technique [0002] Rays refer to beams of particles or photons with specific energies emitted by various radionuclides. X-rays, β-rays, γ-rays and neutron rays are common in reactor engineering, among which X-rays and γ-rays are more common. X-rays are particle streams produced by the transition of electrons in atoms between two energy levels with vastly different energies; gamma-rays are the rays released when the nuclear energy level transitions, and are electromagnetic waves with a wavelength shorter than 0.01 Angstroms . Since these rays were discovered, with the advancement of science and technology, they have been widely used in human life, but everything has two sides. While it brings benefits to our lives, it also...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L1/02C08K9/04C08K3/30C08J5/18
CPCC08K9/04C08J5/18C08J2301/02C08K3/30C08K2003/3045C08K2201/003C08K2201/011C08L2201/08C08L2201/10C08L2203/14C08L2203/16C08L1/02
Inventor 罗晓刚朱星蓉袁俊刘超雷小娟
Owner WUHAN INSTITUTE OF TECHNOLOGY
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