Anti-aging sealant and preparation method thereof
A sealant, aging-resistant technology, applied in chemical instruments and methods, adhesives, other chemical processes, etc., can solve the problems of curing speed, stability, aging resistance, adhesive strength, etc. that cannot meet the growing needs, and achieve excellent comprehensive performance, good sealing effect
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[0027] Example 1
[0028] An aging-resistant sealant, comprising: 20 parts of coumarone resin, 5 parts of polysulfide rubber, 5 parts of nitrile rubber, 8 parts of tert-butylphenol formaldehyde resin, 3 parts of nano-silica, and chlorosulfonate Polyethylene 2 parts, butyl acrylate 2 parts, aluminum powder 1 part, sodium metasilicate 3 parts, phosphate ester 2 parts, triethanolamine 1 part, boron nitride 1 part, paraffin wax 0.5 part, 2,4-dihydroxy 1 part of benzophenone and 0.8 part of butyl p-hydroxybenzoate.
[0029] In the above composition, the particle size of the aluminum powder is 300 μm, and the particle size of the boron nitride is 200 μm.
[0030] The preparation method of the anti-aging sealant includes the following preparation steps:
[0031] (1) Weigh each component in parts by weight;
[0032] (2) Add the components to the reaction kettle, mix and stir uniformly, then heat to 120°C under the condition of a vacuum of 0.01MPa, stir and react for 120 minutes, with a stirri...
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[0033] Example 2
[0034] An aging-resistant sealant, comprising: 26 parts of coumarone resin, 6 parts of polysulfide rubber, 7 parts of nitrile rubber, 9 parts of tert-butylphenol formaldehyde resin, 4 parts of nano-silica, chlorosulfonate Polyethylene 3 parts, butyl acrylate 3 parts, aluminum powder 3 parts, sodium metasilicate 4 parts, phosphate ester 4 parts, triethanolamine 2 parts, boron nitride 2 parts, paraffin 0.8 parts, 2,4-dihydroxy 2 parts of benzophenone and 2 parts of butyl p-hydroxybenzoate.
[0035] In the above composition, the particle size of the aluminum powder is 250 μm, and the particle size of the boron nitride is 180 μm.
[0036] The preparation method of the anti-aging sealant includes the following preparation steps:
[0037] (1) Weigh each component in parts by weight;
[0038] (2) Add each component to the reaction kettle, mix and stir evenly, then heat to 125°C under the condition of a vacuum of 0.02MPa, stir and react for 130 minutes, with a stirring spee...
Example Embodiment
[0039] Example 3
[0040] An aging-resistant sealant, comprising by weight components: 27 parts of coumarone resin, 6 parts of polysulfide rubber, 7 parts of nitrile rubber, 10 parts of tert-butylphenol formaldehyde resin, 5 parts of nano silica, chlorosulfonate Polyethylene 3 parts, butyl acrylate 4 parts, aluminum powder 4 parts, sodium metasilicate 5 parts, phosphate ester 6 parts, triethanolamine 2 parts, boron nitride 2 parts, paraffin wax 1 part, 2,4-dihydroxyl 2 parts of benzophenone and 2.2 parts of butyl p-hydroxybenzoate.
[0041] In the above composition, the particle size of the aluminum powder is 250 μm, and the particle size of the boron nitride is 150 μm.
[0042] The preparation method of the anti-aging sealant includes the following preparation steps:
[0043] (1) Weigh each component in parts by weight;
[0044] (2) Add the components to the reactor, mix and stir uniformly, then heat to 130°C under the condition of a vacuum of 0.02MPa, stir and react for 140 minutes,...
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