Anti-ionizing radiation fiber-reinforced resin matrix composite and preparation method thereof

A fiber-reinforced resin and ionizing radiation technology, which is applied in the field of fiber-reinforced resin-based 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: 2016-10-12
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Anti-ionizing radiation fiber-reinforced resin matrix composite and preparation method thereof

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preparation example Construction

[0050] The present invention has no special requirements for the preparation method of the resin matrix, and the preparation method of the resin matrix is ​​well known to those skilled in the art. 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 present invention preferably first dissolves the curing agent with acetone, and then Mix the dissolved curing agent with epoxy resin. The present invention has no special requirements on the amount of acetone, as long as the curing agent can be dissolved.

[0051] In the present invention, the ratio of the epoxy resin to the curing agent is preferably 100: (5 to 80), more preferably 100: (5 to 15), most preferably 100: (50 to 80). .

[0052] In the present invention, the mass ratio of the modified heavy metal and its compound to the resin matrix is ​​1:(5-10), specifically it can be 1:5, 1:6, 1:7, 1:8, 1: 9 and 1:10.

[0053] The present ...

Embodiment 1

[0075] 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.

[0076] In parts by weight, weigh 16 parts of micron-sized tungsten powder (particle size 1μm), 15 parts of acetone and 5 parts of KH560 coupling agent, dissolve the KH560 coupling agent in acetone, and then add to the tungsten powder In the process, stir uniformly at a temperature of 10°C, and activate at a constant temperature for 10 minutes to prepare surface modified tungsten powder. Mix the surface modified tungsten powder with the resin matrix, and adjust the solution density to 1.09g / cm with a densitometer 3 .

[0077] A wet prepreg machine is used to prepare unidirectional basalt fiber / AG80 resin / modified tungsten powder prepreg. The resin content of the prepreg...

Embodiment 2

[0086] In parts by weight, weigh 100 parts of submicron tungsten carbide powder (average particle size 600nm), 30 parts of ethanol, 3 parts of deionized water and 5 parts of KH550 coupling agent. The KH550 coupling agent is dissolved in a mixed solvent of 30 parts of ethanol and 3 parts of deionized water, and then the tungsten carbide powder is added, stirred evenly at a temperature of 40°C, and activated at a constant temperature for 12 minutes to prepare KH550 surface modified tungsten carbide powder was obtained.

[0087] Weigh 100 parts by weight of AG80 epoxy resin, 58 parts by weight of DDS curing agent, 16 parts by weight of surface-modified tungsten carbide powder, and stir with a planetary stirrer. The stirring temperature is 90°C and the stirring time is 30 minutes. Get AG80 / tungsten carbide powder resin.

[0088] A hot melt prepreg machine is used to pre-impregnate the basalt fiber with AG80 / tungsten carbide powder resin to prepare a basalt fiber / AG80 / tungsten carbide ...

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Abstract

In the present invention, the basalt fiber contains high content of heavy nuclear elements such as iron and manganese, and the heavy nuclear elements improve the absorption and scattering effect of the basalt fiber on high-energy ionizing radiation, and have better ray shielding performance compared with other reinforcing fibers . Elements such as tungsten and lead have a good weakening and shielding effect on high-energy ionizing radiation. By adding heavy metal tungsten, lead and their compound fillers, the energy of high-energy rays can be effectively reduced, so that they can be converted into low-energy radiation. Absorbed by basalt fibers. In the invention, the heavy metals and their compounds, the resin matrix and the basalt fibers cooperate and interact with each other, and the obtained composite material for preventing ionizing radiation can have good radiation-proof performance and mechanical performance at the same time.

Description

Technical field [0001] The invention relates to the technical field of functional composite materials, in particular to a fiber-reinforced resin-based composite material for preventing ionizing radiation and a preparation method thereof. Background technique [0002] Nuclear technique (nuclear technique) refers to modern high and new technology based on nuclear properties, nuclear reactions, nuclear effects and nuclear spectroscopy, with reactors, accelerators, radiation sources and nuclear radiation detectors as tools. It has high sensitivity, specificity, selectivity, anti-interference, penetrability and other characteristics. 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 the general t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08K9/06C08K3/08C08K7/10C08K3/14C08K9/04C08K5/098C08K3/22C08J5/24
CPCC08K9/06C08J5/24C08J2363/00C08K3/08C08K3/14C08K3/22C08K5/098C08K7/10C08K9/04C08K2003/0887C08K2003/2234C08K2201/003C08L2201/08
Inventor 杨中甲李然顾轶卓王绍凯李敏张佐光
Owner BEIHANG UNIV
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