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Preparation method of X-ray and gamma-ray shielding composite fiber

A composite fiber and γ-ray technology, applied in the field of radiation protection, can solve the problems of poor mechanical properties of materials, low X-ray shielding rate, and poor durability, and achieve the effects of good durability, simple process flow, and easy operation

Inactive Publication Date: 2019-09-10
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the above methods are to directly blend unmodified inorganic functional fillers with high molecular polymers and then spin them to make nonwoven materials. The disadvantage is that the inorganic functional fillers are agglomerated, and the two The poor combination of phase interface makes it poorly dispersed in the polymer matrix, which in turn leads to low X-ray shielding rate of the material, poor mechanical properties of the material, and poor durability of the X-ray shielding agent coated on the fiber surface, which limits the above X-ray Applications of Radiation Protective Fibers

Method used

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  • Preparation method of X-ray and gamma-ray shielding composite fiber
  • Preparation method of X-ray and gamma-ray shielding composite fiber
  • Preparation method of X-ray and gamma-ray shielding composite fiber

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Prepare as follows:

[0032] (1) Preparation of surface-active inorganic ray-shielding functional bismuth powder particles: at room temperature, prepare surface-active bismuth powder filler treatment according to mass percent dehydrated alcohol 89%, deionized water 10%, octa(aminophenyltrioxysilane) 1% Add an appropriate amount of oxalic acid to adjust the pH to 3.5-4, and then magnetically stir until the solution is clear and transparent; then add bismuth powder particles equivalent to 50 times the mass of octa(aminophenyltrioxysilane) and an average particle size of 1 μm into the solution In the process, stir magnetically for 30 minutes, then oscillate ultrasonically for 30 minutes, then use deionized water to wash twice and then transfer to an evaporating dish. Finally, put the evaporating dish in a blast drying oven and dry it at 75°C for 6 hours to obtain a surface-active inorganic radiation-shielding functional powder. Bismuth powder particles.

[0033] (2) Blend...

Embodiment 2

[0037] Prepare as follows:

[0038] (1) Preparation of surface-active inorganic ray-shielding function bismuth powder particles: at room temperature, prepare surface-active bismuth powder filler treatment according to mass percent dehydrated alcohol 78%, deionized water 20%, octa(aminophenyltrioxysilane) 2% Add an appropriate amount of oxalic acid to adjust the pH to 3.5-4, and then magnetically stir until the solution is clear and transparent; then add bismuth powder particles equivalent to 100 times the mass of octa(aminophenyltrioxysilane) and an average particle size of 1 μm into the solution In the process, stir magnetically for 30 minutes, then oscillate ultrasonically for 30 minutes, then use deionized water to wash twice and then transfer to an evaporating dish. Finally, put the evaporating dish in a blast drying oven and dry it at 75°C for 6 hours to obtain a surface-active inorganic radiation-shielding functional powder. Bismuth powder particles.

[0039] (2) Blendi...

Embodiment 3

[0042] Prepare as follows:

[0043] (1) Preparation of surface-active inorganic ray-shielding function bismuth powder particles: at room temperature, prepare surface-active bismuth powder filler treatment according to mass percent absolute ethanol 89.7%, deionized water 10%, octa(aminophenyltrioxysilane) 0.3% Add an appropriate amount of oxalic acid to adjust the pH to 3.5-4, and then magnetically stir until the solution is clear and transparent; then add bismuth powder particles equivalent to 50 times the mass of octa(aminophenyltrioxysilane) and an average particle size of 1 μm into the solution In the process, stir magnetically for 30 minutes, then oscillate ultrasonically for 30 minutes, then use deionized water to wash twice and then transfer to an evaporating dish. Finally, put the evaporating dish in a blast drying oven and dry it at 75°C for 6 hours to obtain a surface-active inorganic radiation-shielding functional powder. Bismuth powder particles.

[0044] (2) Blend...

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Abstract

The invention provides a preparation method of X-ray and gamma-ray shielding composite fiber. The preparation method includes the steps of S1, preparation of functional powder particles for surface active inorganic ray shielding; S2, blending granulation; S3, preparation of primary fiber. Polypropylene and polyethylene terephthalate are respectively adopted as the matrix of the composite fiber, tungsten powder and bismuth powder are taken as shielding agents for X-ray and gamma-ray, silane coupling agent VIII (aminophenyl trioxane) is taken as intermediates for surface modification of inorganic functional powder fillers in order to increase interfacial bonding between inorganic powder and organic matter, the lead-free composite protective fiber with high X-ray shielding agent content, gooddurability, excellent physical and mechanical properties and textile processing properties and good wearability is prepared, and broad application prospect is achieved.

Description

technical field [0001] The invention relates to the technical field of radiation protection, in particular to a preparation method of composite fibers for preventing X and gamma rays. Background technique [0002] In recent years, with the rapid development of society, all kinds of radiation have been widely used in nuclear industry, nuclear science, medical treatment, national defense and communication. However, while radiation brings benefits to human beings, it also brings harm to human body. X and gamma rays belong to ionizing radiation, with short wavelength and strong penetrating power, which can cause mutations in biological cells. Long-term exposure can cause damage to human gonads, breasts and other organs, and even cause cancer. Therefore, in order to prevent and reduce the harm of X and gamma rays to the human body, it is necessary to select and prepare corresponding materials for protection. [0003] Traditional X and gamma ray protection materials use lead plat...

Claims

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Application Information

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IPC IPC(8): D01F6/46D01F6/92D01F1/10
CPCD01F1/106D01F6/46D01F6/92
Inventor 姚理荣石敏万星辰吴绥菊杨涛潘刚伟徐思峻
Owner NANTONG UNIVERSITY
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