A dinitrogen tetroxide-resistant inorganic plugging and sealing material, its preparation method and application
A dinitrogen tetroxide and sealing material technology, which is applied in the field of materials and technology, can solve the problems of unsuitable dinitrogen tetroxide plugging and sealing materials, the content is lower than the technical index requirements, and the plugging agent cannot withstand pressure, etc., to achieve product quality Stability, low cost, and the effect of improving sealing performance
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Embodiment 1
[0020] A dinitrogen tetroxide-resistant inorganic plugging and sealing material, including components in parts by mass: 100 parts of aluminum phosphate glue with a neutralization degree of 50%, as component A; white corundum powder WA10#, 240#, 40 parts of 320# each, 10 parts each of fused magnesia 100-150 mesh, 150-200 mesh, and >200 mesh, and stir evenly to obtain component B.
[0021] When using glue, mix components A and B according to the mass ratio of 1:1.5, and then it can be used. The prepared dinitrogen tetroxide-resistant inorganic plugging and sealing material has a tensile shear strength of 1.08MPa, a compressive strength of 9.1MPa, and a helium mass spectrometer leak rate of 3.2×10 under 1MPa pressure. -6 Pa·m 3 / S, curing time 16min.
Embodiment 2
[0023] A dinitrogen tetroxide-resistant inorganic plugging and sealing material, including components in parts by mass: 100 parts of aluminum phosphate glue with a neutralization degree of 50%, as component A; white corundum powder WA10#, 240#, 40 parts each of 320#, 15 parts each of 100-150 mesh fused magnesium oxide, and 15 parts each of 150-200 mesh, stir well to obtain component B.
[0024] When using glue, mix components A and B according to the mass ratio of 1:1.5, and then it can be used. The prepared dinitrogen tetroxide-resistant inorganic plugging and sealing material has a tensile shear strength of 1.12MPa, a compressive strength of 8.37, and a helium mass spectrometer leak rate of 2.6×10 under 1MPa pressure. - 6 Pa·m 3 / S, curing time 13min.
Embodiment 3
[0026] A dinitrogen tetroxide-resistant inorganic plugging and sealing material, including components in parts by mass: 100 parts of aluminum phosphate glue with a neutralization degree of 50%, as component A; white corundum powder WA10#, 240# each 50 parts, 20 parts of borax, 15 parts of 100-150 mesh fused magnesium oxide, 15 parts of 150-200 mesh each, and stir evenly to obtain component B.
[0027] When using glue, mix components A and B according to the mass ratio of 1:1.5, and then it can be used. The prepared dinitrogen tetroxide-resistant inorganic plugging and sealing material has a tensile shear strength of 1.37MPa, a compressive strength of 10.2MPa, and a helium mass spectrometer leak rate of 3.8×10 under 1MPa pressure. -6 Pa·m 3 / S, curing time 11min.
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