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Preparation method of radiation protection polymer composite fiber

A radiation protection and composite fiber technology, applied in the field of nuclear radiation protection, can solve the problems of affecting the tensile strength of fiber filaments, difficulty in automatic weaving, low product strength, etc., and achieve the effect of good flexibility and excellent nuclear radiation protection performance

Active Publication Date: 2018-04-17
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the polymer spinning technology is relatively mature, in the polymer composite system, the interaction force between a large number of fillers and the matrix will determine the process of melt spinning and fiber formation. In addition, it will directly affect the fiber filaments. high tensile strength, which makes automatic weaving more difficult, and the woven products have lower strength

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A preparation method of radiation protection polymer composite fiber, comprising the following steps:

[0023] (1) Activate the lead tungstate particles with gamma radiation protection function, filter, wash, and dry;

[0024] (2) Transfer the material obtained in step 1 to the reaction kettle, and pass nitrogen gas for protection. Under the condition of 160°C, the polymerization reaction is initiated in situ on the surface of the lead tungstate particle with radiation protection function. The reaction time is 2 hours, and tungstic acid is prepared. Lead particle grafted polyacrylonitrile;

[0025] (3) Use a plasticizer to pretreat polyacrylonitrile to lower its melting temperature, and then melt blend and spin it with the grafted lead tungstate particles obtained in step 2 at 160°C to prepare a polyacrylonitrile with good strength Composite fiber with tough polymer, its diameter is about 0.08mm. The mass fraction ratio of the lead tungstate particle grafted polyacryl...

Embodiment 2

[0028] A preparation method of radiation protection polymer composite fiber, comprising the following steps:

[0029] (1) The boron nitride particles with neutron radiation protection function are activated, filtered, washed and dried;

[0030] (2) Transfer the material obtained in step 1 to the reaction kettle, and pass nitrogen gas for protection. Under the condition of 250 ° C, the polymerization reaction is initiated in situ on the surface of boron nitride particles with radiation protection function. The reaction time is 3 hours, and boron nitride is prepared. Particle grafted polyethylene terephthalate;

[0031] (3) Under the condition of 250°C, the boron nitride particle graft obtained in step 2 was melt blended and spun with polyethylene terephthalate to prepare a polymer composite fiber with good strength and toughness. The diameter is about 0.08mm. The mass fraction ratio of boron nitride particle grafts to polyethylene terephthalate is 1:3.5;

[0032] (4) On the ...

Embodiment 3

[0034] A preparation method of radiation protection polymer composite fiber, comprising the following steps:

[0035] (1) Activate the lead borate particles with neutron and gamma protective functions, filter, wash, and dry;

[0036] (2) Transfer the material obtained in step 1 to the reaction kettle, and pass nitrogen gas for protection. Under the condition of 280 ° C, the polymerization reaction is initiated in situ on the surface of the lead borate particle with radiation protection function. The reaction time is 4 hours, and the lead borate particle is prepared. grafted polyamide;

[0037] (3) Melt-blending and spinning the lead borate particle graft obtained in step 2 with polyamide at 280°C to prepare a polymer composite fiber with good strength and toughness, with a diameter of about 0.07mm. The mass fraction ratio of lead borate particle graft to polyamide is 1:5;

[0038] (4) On the loom, the polymer composite fiber filaments are woven to form a fabric with radiatio...

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Abstract

The invention discloses a preparation method of a radiation-protection polymer complex fiber. The preparation method comprises the following steps: sequentially carrying out activating treatment, filtration, washing and drying on inorganic particles with a radiation protection function; transferring the inorganic particles to a reaction kettle, introducing inert gas for protection, and carrying out triggering polymerization reaction on the surfaces of the inorganic particles in situ, so as to prepare an inorganic particle graft; and carrying out melt blending and spinning on the inorganic particle graft and a fiber-grade polymer, so as to obtain the radiation-protection polymer complex fiber. The polymer complex fiber has the excellent radiation protection function and good strength and tenacity, is capable of effectively protecting gamma radiation, neutron radiation and mixed gamma-neutron radiation and can meet the protection requirements of complex radiation environments; and the polymer complex fiber can be processed into shell fabrics by virtue of subsequent weaving techniques and can be finally produced into ventilating radiation-protection textile products.

Description

technical field [0001] The invention belongs to the technical field of nuclear radiation protection, and relates to a preparation method of a radiation protection polymer composite fiber. Background technique [0002] With the requirements of economic and social development, nuclear technology has been widely used in many fields such as medical treatment, nuclear industry and national defense, which has brought huge economic and social benefits. threats to human health and environmental safety. Radiation protection materials and equipment are the key to ensuring the safety of workers and the public in radiation sites, as well as an effective means to deal with nuclear emergencies, and an important guarantee for military and civilian radiation safety protection. Although traditional radiation protection materials and equipment have played a huge role in radiation protection, they can no longer meet the new needs of the current rapid development of nuclear technology. Theref...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F1/10D01F6/90D01F6/92D01F6/54C08G63/183C08G69/00C08F292/00C08F220/44
CPCC08F292/00C08G63/183C08G69/00D01F1/106D01F6/54D01F6/90D01F6/92C08F220/44
Inventor 周元林张全平李银涛
Owner SOUTHWEAT UNIV OF SCI & TECH
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