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.
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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...
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[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...
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[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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