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Tungsten-polymer composite material and preparation method thereof

A high molecular polymer and composite material technology, which is applied in the field of tungsten-high molecular polymer composite material and its preparation, can solve the problems of poor physical and mechanical properties of composite materials, low loading capacity of composite materials, poor fluidity and compactness, etc. Achieve good radiation shielding performance, good physical and mechanical properties, high loading effect

Inactive Publication Date: 2012-07-18
XIAMEN HONGLU TUNGSTEN MOLYBDENUM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent US7304105B2 uses tungsten powders of different particle sizes to fill elastomers to produce a radiation-proof composite material. This material has good flexibility and processing performance, but it needs three kinds of tungsten powders with different particle sizes to match each other to improve the loading of tungsten. Quantity, complex manufacturing process
The tungsten powder used in the prior art is usually produced by traditional grinding techniques such as ball milling. The tungsten powder particles produced in this way are seriously agglomerated, irregular in shape, poor in fluidity and compactness, and the loading capacity in composite materials Low, it is not easy to disperse evenly in the polymer matrix, resulting in poor physical and mechanical properties of the composite material

Method used

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  • Tungsten-polymer composite material and preparation method thereof
  • Tungsten-polymer composite material and preparation method thereof
  • Tungsten-polymer composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The formula of high-density tungsten-polymer ray shielding composite material is:

[0030]

[0031]

[0032] The preparation method of above-mentioned tungsten-polymer composite material, its steps are:

[0033] (1) Weigh the tungsten powder according to the above parts by weight, and carry out jet crushing of the tungsten powder, the feed pressure is 0.9MPa, and the crushing pressure is 1.1MPa.

[0034] (2) Stir the jet-milled tungsten powder continuously in the doping pot, and spray the titanate coupling agent diluted with ethanol for surface modification;

[0035] (3) Weigh other materials according to the above parts by weight, first add the styrene thermoplastic elastomer to the kneader, then put in 500 parts by weight of the above tungsten powder, knead for an appropriate time, add the remaining tungsten powder and anti-aging agent, knead Knead evenly and make feed, and above-mentioned kneading temperature is 140 ℃.

[0036] (4) Forming: After granulating ...

Embodiment 2

[0039] The formula of high-density tungsten-polymer ray shielding composite material is:

[0040]

[0041]

[0042] The preparation method of above-mentioned tungsten-polymer composite material, its steps are:

[0043] (1) Weigh the tungsten powder according to the above parts by weight, and carry out jet crushing of the tungsten powder, the feed pressure is 0.8MPa, and the crushing pressure is 1.0MPa.

[0044] (2) The tungsten powder pulverized by airflow is constantly stirred in the doping pot, and the silane coupling agent diluted with ethanol is sprayed for surface modification;

[0045] (3) Weigh other materials according to the above weight parts, first add EPDM rubber into the kneader, then put in 500 parts by weight of the above tungsten powder, knead at 120 °C for an appropriate time, and knead all the remaining materials except the vulcanizing agent The materials are added in sequence, mixed evenly and discharged, and finally the vulcanizing agent is added on ...

Embodiment 3

[0049] The formula of high-density tungsten-polymer ray shielding composite material is:

[0050]

[0051]

[0052] The preparation method of above-mentioned tungsten-polymer composite material, its steps are:

[0053] (1) Weigh the tungsten powder according to the above parts by weight, and carry out jet crushing of the tungsten powder, the feed pressure is 0.9MPa, and the crushing pressure is 1.0MPa.

[0054] (2) Stir the jet-milled tungsten powder and tungsten fiber in the doping pot continuously, and spray the rare earth coupling agent diluted with ethanol for surface modification;

[0055](3) Weigh other materials according to the above parts by weight, first add natural rubber into the kneader, then add styrene-butadiene rubber and 500 parts by weight of the mixture of the above-mentioned tungsten powder and tungsten fiber, and knead at 80 ° C for a suitable time. All the remaining materials except the vulcanizing agent are added in sequence, and the materials are...

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Abstract

The invention discloses a tungsten-polymer composite material and a preparation method thereof. The tungsten-polymer composite material comprises the following components in percentage by weight: 20-100% of polymers, 950-1000% of tungsten powder, 0-50% of tungsten fibers, 0.5-5% of coupling agent and 0.5-10% of other auxiliaries, wherein the tungsten powder is prepared through airflow pulverization and surface modification. The tungsten powder disclosed by the invention is good in compaction and flowability and high in loading capacity. The composite material disclosed by the invention is good in physical and mechanical properties, and excellent in weathering resistance, chemical resistance and organic solvent resistance, not only can be applied to the field of ray shielding, but also can be applied to the fields of vibration isolation, weight counterbalance, heat conduction, weapons and ammunitions and the like.

Description

technical field [0001] The invention belongs to the field of material engineering, and in particular relates to a tungsten-polymer composite material and a preparation method thereof. Background technique [0002] The reactor of a nuclear power plant is a huge radioactive source. It will produce neutron and gamma radiation when the nuclear fuel is fissioned. The fission products produced by the fission reaction and the activation products produced by the activation reaction will also produce alpha, beta and gamma radiation when they decay. Therefore, Nuclear power plant facilities have great potential dangers, and radiation shielding must be carried out to avoid various possible accidents. At the same time, the disposal of nuclear waste is also crucial. Commonly referred to as nuclear waste includes two types of low- and medium-level radioactive nuclear waste and high-level radioactive nuclear waste. The former mainly refers to the radioactive waste liquid and waste generat...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/12C08L25/06C08L27/06C08L77/00C08L79/08C08L75/04C08L33/12C08L67/02C08L55/02C08L7/00C08L27/12C08L83/04C08L9/02C08L23/16C08L11/00C08L9/00C08L9/06C08K9/04C08K9/06C08K7/06C08K3/08
CPCC08K5/54C08K3/08C08J5/06C08K7/06C08K13/04C08K9/06C08K2003/0887C08K2201/005
Inventor 赵国璋宋久鹏杨福民赖亚洲于洋庄志刚
Owner XIAMEN HONGLU TUNGSTEN MOLYBDENUM IND CO LTD
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