Neutron shielding material with flame-retardant and heat-insulating properties and preparation method thereof
A shielding material and neutron technology, which are applied in the field of neutron shielding materials and their preparation, can solve the problems of weak neutron shielding ability, poor flexibility, and no flame retardancy, and achieve good thermal neutron shielding performance and high thermal stability. effect of sub-absorption cross section, high mechanical strength
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Embodiment 1
[0020] The formula of the neutron shielding material with flame-retardant and heat-insulating properties is: 100g of methyl vinyl silica gel with a hardness of 5HA, B 4 C powder 90g, SiO 2 8.2g of hollow microspheres, 48g of zinc borate powder, 0.5g of bis-pentasulfurizing agent, and 1g of KH-540 coupling agent. where B 4 C powder particle size 50um, SiO 2 The particle size of hollow microbeads is 25um, and the particle size of zinc borate powder is 2.5um.
[0021] The steps of the preparation method of the neutron shielding material with flame-retardant and heat-insulating properties are as follows:
[0022] (1) Plastic refining of methyl vinyl silica gel matrix material: adjust the distance between the double rollers of the open mill to 2mm, and the rotation speed to 45r / min. Put it into the double roller room for masticating, and the masticating time is 3 minutes. Add 1g of vulcanizing agent Shuang25 to the above-mentioned methyl vinyl silica gel and continue masticati...
Embodiment 2
[0032] The formula of the neutron shielding material with flame-retardant and heat-insulating properties is: 100g of methyl vinyl silica gel with a hardness of 5HA, B 4 C powder 53.5g, TiO 2 4.8g of hollow microspheres, 28.3g of zinc borate powder, 2g of bis-pentasulfurizing agent, and 3g of KH-550 coupling agent. where B 4 C powder particle size 50um, TiO 2 The particle size of hollow microbeads is 20um, and the particle size of zinc borate powder is 2.5um.
[0033] The steps of the preparation method of the neutron shielding material with flame-retardant and heat-insulating properties are as follows:
[0034] (1) Plastic refining of methyl vinyl silica gel matrix material: adjust the distance between the double rollers of the open mill to 2mm, and the speed of 45r / min. Carry out masticating between two rollers, the masticating time is 4 minutes. Add a certain amount of vulcanizing agent 225 to the methyl vinyl silica gel and continue masticating for 14 minutes, during w...
Embodiment 3
[0044] The formula of the neutron shielding material with flame-retardant and heat-insulating properties is: 100g of methyl vinyl silica gel with a hardness of 5HA, B 4 C powder 30g, Al 2 o 3 2.7g of hollow microspheres, 15.8g of zinc borate powder, 3g of bis-pentasulfurizing agent, and 5g of aminopropyltrimethoxysilane. where B 4 C powder particle size 50um, Al 2 o 3 The particle size of hollow microbeads is 30um, and the particle size of zinc borate powder is 2.5um.
[0045] The steps of the preparation method of the neutron shielding material with flame-retardant and heat-insulating properties are as follows:
[0046](1) Plastic refining of methyl vinyl silica gel matrix material: adjust the distance between the double rollers of the open mill to 2mm, and the speed of 45r / min. Carry out mastication between the double rollers, and the mastication time is 5 minutes. Add a certain amount of vulcanizing agent bis-2-5 into the methyl vinyl silica gel and continue masticat...
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Abstract
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