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Ionizing-radiation-preventive composite material and preparation method thereof

A composite material and ionizing radiation technology, which is applied in the field of anti-ionizing radiation composite materials and its preparation, can solve the problems of high-density lead with low mechanical properties, difficulty in meeting structural material requirements, increasing system weight and cost, etc.

Inactive Publication Date: 2016-09-21
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Although these materials have good radiation shielding properties, they often have obvious defects in mechanical properties. For example, the high density, toxicity and low mechanical properties of lead limit their applications. It is often necessary to increase the outer protective device and increase the system capacity. weight and cost; lead glass, lead-boron polyethylene, etc., which use lead or lead-containing compounds as functional fillers, have low mechanical properties and are difficult to meet the requirements of structural materials

Method used

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  • Ionizing-radiation-preventive composite material and preparation method thereof

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preparation example Construction

[0049] The present invention has no special requirements on the preparation method of the resin matrix, and the preparation method of the resin matrix well known to those skilled in the art can be used for preparation. In the present invention, when the curing agent is liquid, the curing agent and epoxy resin can be mixed directly; when the curing agent is solid, the curing agent is preferably first dissolved in acetone in the present invention, and then Mix the dissolved curing agent with the epoxy resin. The present invention has no special requirements on the amount of acetone, as long as the curing agent can be dissolved.

[0050] In the present invention, the mass fraction ratio of the epoxy resin to the curing agent is preferably 100:(5-80), more preferably 100:(5-15), most preferably 100:(50-80) .

[0051] In the present invention, the mass ratio of the modified rare earth oxide to the resin matrix is ​​1:(5-10), specifically 1:5, 1:6, 1:7, 1:8, 1:9 and 1:10.

[005...

Embodiment 1

[0074] Weigh 58 parts by weight of DDS curing agent according to the preparation of 100 parts by weight of AG80 resin, add 30 parts by weight of acetone to dissolve DDS first, and mix and stir the acetone solution after dissolving DDS with AG80 resin until the solution is uniform and clear to obtain a resin matrix.

[0075] In parts by weight, weigh 16 parts of micron Er2 o 3 Filler (particle size 5 ~ 7μm), 15 parts of acetone and 5 parts of KH560 coupling agent, the KH560 coupling agent is dissolved in acetone, and then added to the Er 2 o 3 The filler was stirred evenly at a temperature of 10°C, and activated at a constant temperature for 10 minutes to obtain surface-modified Er 2 o 3 . Surface modified Er 2 o 3 Mix with the resin matrix, adjust the solution density to 1.09g / cm with a density meter 3 .

[0076] Preparation of unidirectional basalt fiber / AG80 resin / modified Er by wet prepreg machine 2 o 3 Prepreg, prepreg resin content is 28wt%, areal density is 340g...

Embodiment 2

[0085] In parts by weight, weigh 100 parts of micron-sized Gd 2 o 3 Filler (average particle size 5-7μm), 30 parts of ethanol, 3 parts of deionized water and 5 parts of KH550 coupling agent. Dissolve the KH550 coupling agent in a mixed solvent prepared from 30 parts of ethanol and 3 parts of deionized water, then add the Gd 2 o 3 , stirred evenly at a temperature of 40°C, and activated at a constant temperature for 12 minutes to prepare KH550 surface-modified Gd 2 o 3 .

[0086] Weigh the AG80 epoxy resin of 100 parts by weight, the DDS curing agent of 58 parts by weight, the surface modification Gd of 16 parts by weight 2 o 3 , using a planetary stirrer to stir, the stirring temperature is 90 ℃, and the stirring time is 30min, and the AG80 / Gd 2 o 3 resin.

[0087] Using hot melt prepreg machine, the basalt fiber is preimpregnated with AG80 / Gd 2 o 3 Resin, preparation of basalt fiber / AG80 / Gd 2 o 3 The prepreg tape has a resin content of 32 wt%. During the prepreg...

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Abstract

The invention discloses an ionizing-radiation-preventive composite material and a preparation method thereof. In the ionizing-radiation-preventive composite material, basalt fiber is high in content of heavy-nucleus elements like iron and manganese, and the heavy-nucleus elements improve absorbing and scattering effect on high-energy ionizing radiation of the basalt fiber, so that compared with other reinforced fiber, the basalt fiber has better ray shielding performance; due to special atomic energy level, rare earth oxide has strong photoelectric absorbing effect on rays of 10-80 keV, and weak absorbing area that the heavy-nucleus elements have within the range can be filled up, so that shielding performance of the basalt fiber composite material on wide-energy-range rays is improved remarkably. The rare earth oxide, a resin matrix and the basalt fiber mutually cooperate and mutually act, so that the ionizing-radiation-preventive composite material has good radiation-preventive performance and mechanical performance.

Description

technical field [0001] The invention relates to the technical field of functional composite materials, in particular to an anti-ionizing radiation composite material and a preparation method thereof. Background technique [0002] Nuclear technology refers to modern high-tech based on nuclear properties, nuclear reactions, nuclear effects and nuclear spectroscopy, using reactors, accelerators, radiation sources and nuclear radiation detectors as tools. It has the characteristics of high sensitivity, specificity, selectivity, anti-interference and penetrability. With the development of science and technology, nuclear technology has attracted more and more attention, and has been widely used in various fields such as energy, medicine, national defense, agriculture, and aerospace. [0003] However, the biggest problem in the application of nuclear technology is ionizing radiation. Ionizing radiation is a general term for all radiation that can cause ionization of matter, inclu...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08K13/06C08K9/06C08K9/04C08K3/22C08K7/10
CPCC08K13/06C08K3/22C08K7/10C08K9/04C08K9/06C08K2003/221C08L63/00
Inventor 顾轶卓李然杨中甲王绍凯李敏张佐光
Owner BEIHANG UNIV
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