Composite neutron absorbing material and preparation method thereof

An absorbing material and composite technology, applied in the field of composite neutron absorbing materials and their preparation, can solve problems such as damage to heat dissipation capacity, and achieve the effects of improving high temperature resistance performance and mechanical strength, improving mechanical strength, and increasing absorption effect.

Pending Publication Date: 2022-05-10
镇江华核装备有限公司
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  • Abstract
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Problems solved by technology

If other high-strength structural materials are used as supports

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  • Composite neutron absorbing material and preparation method thereof

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[0029] Example 1

[0030] A composite neutron absorption material, in parts by weight, mainly comprises: 10 parts of modified carbon nano springs, 11 parts of potassium titanate crystal whiskers and 20 parts of sodium aluminate.

[0031] A preparation method of a composite neutron absorption material, the preparation method of the composite neutron absorption material mainly comprises the following preparation steps:

[0032](1) Preparation of modified carbon nano-spring: place the nano-iron oxide in the reaction chamber, at 700 °C, at a flow rate of 800 sscm, introduce acetone, pyridine and acetylene with a mass ratio of 1:1, which is 800 times the mass of the nano-iron oxide. : 3 After mixing the carbon source gas, stop ventilating for 5 minutes, then pass nitrogen gas at the same flow rate for 10 minutes, and after cooling to 10 °C, carbon nano-springs are prepared. The mass ratio of 1:15 was mixed evenly, and potassium permanganate with 0.8 times the mass of the carbon na...

Example Embodiment

[0035] Example 2

[0036] A composite neutron absorption material, in parts by weight, mainly comprises: 11 parts of modified carbon nano springs, 12 parts of potassium titanate crystal whiskers and 27 parts of sodium aluminate.

[0037] A preparation method of a composite neutron absorption material, the preparation method of the composite neutron absorption material mainly comprises the following preparation steps:

[0038] (1) Preparation of modified carbon nano-spring: place the nano-iron oxide in the reaction chamber, at 750 °C, at a flow rate of 900 sscm, introduce acetone, pyridine and acetylene with a mass ratio of 900 times the mass of the nano-iron oxide into 1:1. : 3 After mixing the carbon source gas, the ventilation was stopped for 8 minutes, and then nitrogen gas was introduced for 15 minutes at the same flow rate. After cooling to 20 ° C, carbon nano-springs were prepared. The mass ratio of 1:12 was mixed evenly, and potassium permanganate with 0.9 times the ma...

Example Embodiment

[0041] Example 3

[0042] A composite neutron absorption material, in parts by weight, mainly comprises: 13 parts of modified carbon nano springs, 15 parts of potassium titanate crystal whiskers and 35 parts of sodium aluminate.

[0043] A preparation method of a composite neutron absorption material, the preparation method of the composite neutron absorption material mainly comprises the following preparation steps:

[0044] (1) Preparation of modified carbon nano-spring: put the nano-iron oxide in the reaction chamber, at 800 °C, at a flow rate of 1000 sscm, introduce acetone, pyridine and acetylene with a mass ratio of 1:1, 1000 times the mass of the nano-iron oxide. : 3 After mixing the carbon source gas, stop ventilating for 10 minutes, then pass nitrogen gas at the same flow rate for 20 minutes, and after cooling to 30 ℃, carbon nano springs are prepared. The carbon nano springs are mixed with 50% concentrated sulfuric acid by pressing The mass ratio of 1:10 was mixed e...

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Abstract

The invention discloses a composite neutron absorbing material and a preparation method thereof, and relates to the technical field of neutron absorbing materials. The preparation method of the composite neutron absorbing material comprises the following steps: performing vapor deposition on acetone, pyridine and acetylene to prepare a carbon nano spring, oxidizing, reacting with hydroxymethyl trimethoxysilane to prepare a modified carbon nano spring, reacting titanium dioxide with potassium hydroxide, and depositing and growing potassium titanate whiskers on the modified carbon nano spring to prepare the composite neutron absorbing material. And performing hydrogen plasma treatment on the modified carbon nano spring on which the potassium titanate whiskers grow, mixing the treated modified carbon nano spring with sodium aluminate, introducing carbon dioxide for reaction, and calcining to obtain the composite neutron absorbing material. The composite neutron absorbing material prepared by the invention has excellent high temperature resistance and mechanical properties.

Description

technical field [0001] The invention relates to the technical field of neutron absorbing materials, in particular to a composite neutron absorbing material and a preparation method thereof. Background technique [0002] With the increasing shortage of resources and the gradual aggravation of environmental pollution, the development of clean energy has become a global development trend. Due to its advantages of environmental protection, cleanliness, and high efficiency, nuclear energy has been focused on and developed rapidly. During the operation of the nuclear power plant reactor, it is necessary to continuously unload the nuclear fuel whose burnup depth reaches the design limit, which is called "spent fuel". Reports indicate that each mega-kilowatt-class reactor produces about 181 tons of spent fuel per year. It is estimated that by 2030, my country's nuclear power plants will accumulatively discharge about 24,000 tons of spent fuel. Solving and improving the high-densi...

Claims

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Application Information

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IPC IPC(8): G21C19/40
CPCG21C19/40Y02E30/30
Inventor 克磊包行飞陈涛
Owner 镇江华核装备有限公司
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