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Nuclear radiation resistant vulcanized rubber and preparation method thereof

A technology of vulcanized rubber and nuclear radiation resistance, applied in the field of special rubber, which can solve the problems of inability to improve radiation resistance, decline in rubber mechanical properties, and limited radiation resistance, and achieve excellent comprehensive physical properties, enhanced shielding, and effective protection and shielding effects

Pending Publication Date: 2022-04-01
河北宇通特种胶管有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the special rubber has improved nuclear radiation resistance, the rare earth salts in this patent are radiation resistant agents and also crosslinking agents. As a result, when the added amount reaches a certain value, the radiation The radiation performance reaches a stable extreme value, so its radiation resistance performance is limited
If you continue to add fillers, the radiation resistance cannot be improved, and at the same time, it will cause serious phase separation, resulting in a serious decline in the mechanical properties of the rubber.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of nuclear radiation resistant rubber material, the weight parts of its raw materials are: 80 parts of EPM rubber, 20 parts of lead oxide, 10 parts of bismuth oxide, 35 parts of high wear-resistant carbon black, 10 parts of boron carbide, 15 parts of glass fiber, three 15 parts of antimony oxide, 15 parts of naphthenic oil, 4 parts of phenolic resin, 3 parts of dicumyl peroxide, 2.0 parts of accelerator D, 0.3 parts of accelerator TMTD, 2.5 parts of antioxidant RD, additional reinforcing components 10 parts of cerium oxide, 5 parts of graphene and 45 parts of epoxy resin.

[0025] (1) In the rubber mixer, first add EPM rubber, press the raw rubber for 1 to 2 minutes, then add high wear-resistant carbon black, boron carbide, glass fiber, and naphthenic oil for 3 to 5 minutes, and then add Antiaging agent RD, lead oxide, bismuth oxide, antimony trioxide, knead for 2-3 minutes, add cerium oxide 10, graphene 5 and epoxy resin 45, banbury temperature 120-150°C, mixing...

Embodiment 2

[0030] Different from Example 1, a kind of nuclear radiation resistant rubber material, the parts by weight of its raw materials are: 85 parts of EPM rubber, 15 parts of lead oxide, 15 parts of bismuth oxide, 35 parts of high wear-resistant carbon black, 20 parts of glass fiber , 5 parts of lead titanate, 10 parts of antimony trioxide, 16 parts of naphthenic oil, 5 parts of phenolic resin, 2.5 parts of dicumyl peroxide, 2.5 parts of accelerator D, 0.7 parts of accelerator TMTD, and 3 parts of antioxidant RD , the additional reinforcement components are 12 parts of cerium oxide, 7.5 parts of graphene and 40 parts of epoxy resin.

[0031] Physical performance test of vulcanized rubber: hardness 65A, tensile strength ≥ 15MPa, elongation at break ≥ 550%, when the nuclear radiation dose is 5.00E+05 (Gy), the physical properties of vulcanized rubber do not change, and its hardness retention rate is high. Tensile strength and change rate of elongation at break are both lower than 15%...

Embodiment 3

[0033] Different from Example 1, a kind of nuclear radiation resistant rubber material, the parts by weight of its raw materials are: 90 parts of EPM rubber, 20 parts of lead oxide, 15 parts of bismuth oxide, 30 parts of high wear-resistant carbon black, 20 parts of glass fiber , 10 parts of potassium titanate whiskers, 20 parts of antimony trioxide, 12 parts of naphthenic oil, 4.5 parts of phenolic resin, 3.5 parts of dicumyl peroxide, 3 parts of accelerator D, 0.5 parts of accelerator TMTD, antioxidant RD 2.8 parts, 7.5 parts of cerium oxide, 5 parts of graphene and 35 parts of epoxy resin as additional reinforcing components;

[0034] Physical performance test of vulcanized rubber: hardness 62A, tensile strength ≥ 13MPa, elongation at break ≥ 620%, when the nuclear radiation dose is 5.00E+05 (Gy), the physical properties of vulcanized rubber do not change, and its hardness retention rate is high. Tensile strength and change rate of elongation at break are both lower than 15...

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Abstract

The invention belongs to the technical field of special rubber, and particularly relates to nuclear radiation resistant vulcanized rubber and a preparation method thereof. The radiation-resistant rubber composition comprises the following raw material components in parts by weight: 80-90 parts of EPM rubber, 30-50 parts of a radiation-resistant auxiliary agent, 40-60 parts of a filling agent, 3-8 parts of a vulcanizing agent, 1.5-3.0 parts of an accelerant, 10-20 parts of a plasticizer and 2-5 parts of an anti-aging agent, and is characterized in that the radiation-resistant auxiliary agent comprises lead oxide, bismuth oxide, barium sulfate and / or antimony trioxide. The nuclear radiation resistant vulcanized rubber obtained according to the preparation method has stable protection and shielding performance on nuclear radiation in the actual use process, also has excellent comprehensive physical performance, and has the advantages of stable performance, safety and reliability.

Description

technical field [0001] The invention belongs to the technical field of special rubber, and specifically relates to a nuclear radiation-resistant vulcanized rubber and a preparation method thereof. Background technique [0002] With the application of nuclear energy and the development of the nuclear industry, polymer rubber materials are more and more widely used in various nuclear reactors and nuclear radiation sites, because nuclear radiation contains a large number of γ-rays, β-rays, X-rays and various charged particles Lines and neutron rays, etc., are extremely penetrating and destructive, causing great harm to surrounding materials. Among them, the most dangerous ones are gamma radiation and neutron radiation. In the nuclear reaction, a large number of gamma rays will be produced when the atom splits instantaneously and the fission products disintegrate. This energy wave has the characteristics of short wavelength, strong penetrability and high energy. (Generally 6~10...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L63/00C08L61/06C08K3/22C08K3/04C08K3/38C08K7/14C08K3/24C08K7/08
Inventor 蔺建刚赵聪
Owner 河北宇通特种胶管有限公司
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