Rare earth modified full non-lead X-ray screen rubber

A rare earth modification and X-ray technology, which is applied in shielding, reactors, nuclear engineering, etc., can solve the problems of difficulty in ensuring the uniformity of material shielding performance, difficulty in controlling the stability of material performance, and easy occurrence of voids, etc., to achieve good interface compatibility , high dispersion interface compatibility, various effects

Inactive Publication Date: 2006-06-14
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Russian patents RU2054439 and RU2028331 all disclose rubber X-ray-resistant composite materials modified with inorganic rare earth oxide fillers, but due to the poor compatibility of inorganic rare earth (rare earth oxides) with the rubber matrix, the polymer matrix Voids are easy to appear at the interface, and these gaps will be easily penetrated when irradiated by high-energy rays, and even the leakage of rays will occur. It is difficult to guarantee the uniformity of shielding performance of the material, so the performance stability of the material is also difficult to control.

Method used

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  • Rare earth modified full non-lead X-ray screen rubber
  • Rare earth modified full non-lead X-ray screen rubber
  • Rare earth modified full non-lead X-ray screen rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The composition and parts by weight of each component are:

[0036] Natural Rubber 100

[0037] Zinc oxide 5

[0038] stearic acid 2

[0039] Accelerator CZ 1.5

[0040] Gadolinium Acrylate 20

[0041] Neodymium Acrylate 20

[0042] Samarium oxide 150

[0043] Gadolinium oxide 150

[0044] Si69 1.2

[0045] naphthenic oil 10

[0046] sulfur 3

[0047]Add 100 parts (parts by weight) of natural rubber to the internal mixer at normal temperature, and add 5 parts of zinc oxide and 2 parts of stearic acid in sequence at a rotor speed of 60-80 rpm at a shear rate, and mix for 1-2 minutes; Then add 1 part of accelerator CZ, mix for 1-2 minutes; add 20 parts of gadolinium acrylate and 20 parts of neodymium acrylate in batches, and mix for 5-8 minutes; add 150 parts of samarium oxide and 150 parts of gadolinium oxide in batches, and batch by batch Add 10 parts of naphthenic oil, mix for 10-20 minutes, then add 1.2 parts of Si69, and mix for 2 minutes; finally, add 3 pa...

Embodiment 2

[0049] The composition and parts by weight of each component are:

[0050] Natural Rubber 100

[0051] Zinc oxide 5

[0052] stearic acid 2

[0053] Accelerator CZ 1.5

[0054] Gadolinium Acrylate 20

[0055] Neodymium Acrylate 20

[0056] Neodymium oxide 150

[0057] Europium oxide 150

[0058] Si69 1.2

[0059] naphthenic oil 10

[0060] sulfur 3

[0061] Add 100 parts (parts by weight) of natural rubber to the internal mixer at normal temperature, and add 5 parts of zinc oxide and 2 parts of stearic acid in sequence at a rotor speed of 60-80 rpm at a shear rate, and mix for 1-2 minutes; Then add 1.5 parts of accelerator CZ, mix for 1-2 minutes; add 20 parts of gadolinium acrylate and 20 parts of neodymium acrylate in batches, and mix for 5-8 minutes; add 150 parts of neodymium oxide and 150 parts of europium oxide in batches, and batch by batch Add 10 parts of naphthenic oil and mix for 10-20 minutes, then add 1.2 parts of Si69 and mix for 2 minutes; finally, add ...

Embodiment 3

[0063] The composition and parts by weight of each component are:

[0064] Natural Rubber 100

[0065] Zinc oxide 5

[0066] stearic acid 2

[0067] Accelerator CZ 1.5

[0068] Europium acrylate 20

[0069] Samarium acrylate 20

[0070] Neodymium oxide 150

[0071] Terbium oxide 150

[0072] Si69 1.2

[0073] naphthenic oil 10

[0074] sulfur 3

[0075] Add 100 parts (parts by weight) of natural rubber to the internal mixer at normal temperature, and add 5 parts of zinc oxide and 2 parts of stearic acid in sequence at a rotor speed of 60-80 rpm at a shear rate, and mix for 1-2 minutes; Then add 1.5 parts of accelerator CZ and mix for 1-2 minutes; add 20 parts of europium acrylate and 20 parts of samarium acrylate in batches and mix for 5-8 minutes; add 150 parts of neodymium oxide and 150 parts of terbium oxide in batches, and batch by batch Add 10 parts of naphthenic oil and mix for 10-20 minutes, then add 1.2 parts of Si69 and mix for 2 minutes; finally, add 3 part...

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Abstract

The invention relates to a rare-earth modified all lead-free X-ray screening rubber, making surface modification processing on a part of the organic rare-earth and making organization reaction processing on the other part to prepare organic rare-earth salt, then adding them both to rubber in a certain proportion, so as to obtain the modified all lead-free X-ray screening rubber, making the screening property and mechanical property of the material achieve the desired effects. It can be widely applied to medical diagnosis X-ray machines, X-ray diffraction meters, and emitters of electron microscopes as well as the protection of working personnel on the occasions of generating X-rays.

Description

Technical field: [0001] The invention relates to a rare earth modified all-lead-free X-ray shielding rubber. Background technique: [0002] The present invention is to prepare high-shielding performance, lead-free, light and soft thin-layer X-ray shielding polymer composite materials, which are used for medical diagnostic X-ray light machines, X-ray diffractometers, electron microscope emitters and other transmitters with X-ray Protection of workers in places where radiation is generated. [0003] The development, production and popularization of radiation protection materials is one of the key points of civil health protection work, and it is also an important part of radiation protection in the field of nuclear energy development and military use. Domestic polymer radiation protection materials are mainly lead rubber products. Europe, America, Japan and other countries have successfully developed new thermoplastic elastomer composite materials. Under the same specific le...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21F1/10C08K5/56C08L21/00
Inventor 刘力张立群魏宗源伍社毛
Owner BEIJING UNIV OF CHEM TECH
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