Antioxidant for aero-engine graphite material and preparation method and application method thereof
An aero-engine and anti-oxidant technology, applied in the direction of graphite, etc., can solve problems such as unfavorable film formation, mechanical wear, and fatigue wear of carbon-graphite sealing materials, and achieve the effects of improving anti-oxidation performance, increasing cross-linking degree, and inhibiting over-curing
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Embodiment 1
[0041] 1) Accurately weigh 12 parts of zinc oxide, 2 parts of manganese oxide, 0.2 part of 4-hydroxybutyl, 0.1 part of -aminopropyl, 40.5 parts of phosphoric acid, 19 parts of boric acid, 0.1 part of sodium silicate, 0.1 part of trisodium phosphate by mass parts 0.1 part, 5 parts ammonium hydrogen phosphate, 21 parts water;
[0042] 2) Put the raw materials weighed in step 1) into a constant temperature liquid storage tank at 80°C, stir at a constant speed until it becomes a transparent liquid, prepare a solution with a pH value of 3, and age for 10 hours to obtain an antioxidant;
[0043] 3) Clean the surface of the carbon graphite material to be impregnated until there is no obvious powder residue, put it into a mixed solution of absolute ethanol and water (the mass ratio of sewage ethanol and water is 3:1), and ultrasonically clean it for 0.5h. It was placed in a vacuum drying oven, dried at 110°C for 10h, and set aside;
[0044]4) The carbon-graphite material treated in s...
Embodiment 2
[0052] 1) Accurately weigh 13 parts by mass of zinc oxide, 4 parts of magnesium oxide, 0.1 part of -aminopropyl group, 0.3 part of β-hydroxyethyl group, 45 parts of phosphoric acid, 13 parts of boric acid, 0.4 part of trisodium phosphate, and sodium silicate 0.2 parts, 4 parts ammonium hydrogen phosphate, 20 parts water;
[0053] 2) put the raw materials weighed in step 1) into a constant temperature liquid storage tank, stir at a constant speed until it becomes a transparent liquid, prepare a solution with a pH value of 3, and age for 10h to obtain an antioxidant;
[0054] 3) Clean the surface of the carbon-graphite material to be impregnated until there is no obvious powder residue, put it into a mixed solution of absolute ethanol and water (the mass ratio of absolute ethanol and water is 3:1), and ultrasonically clean it for 0.5h. It was placed in a vacuum drying oven, dried at 110 ° C for 10 h, and set aside;
[0055] 4) The carbon-graphite material treated in step 3) is ...
Embodiment 3
[0062] 1) Accurately weigh in parts by mass 15 parts of zinc oxide, 5 parts of alumina, 0.7 parts of β-hydroxyethyl, 0.3 parts of -aminopropyl, 50 parts of phosphoric acid, 10 parts of boric acid, 0.4 parts of sodium silicate, and aluminum silicate 0.6 parts, 2 parts ammonium hydrogen phosphate, 16 parts water
[0063] 2) put the raw materials weighed in step 1) into a constant temperature liquid storage tank, stir at a constant speed until it becomes a transparent liquid, prepare a solution with a pH value of 3, and age for 10h to obtain an antioxidant;
[0064] 3) Clean the surface of the carbon graphite material to be impregnated until there is no obvious powder residue, put it into a mixed solution of absolute ethanol and water (the mass ratio of sewage ethanol and water is 3:1), and ultrasonically clean it for 0.5h. It was placed in a vacuum drying oven, dried at 110°C for 10h, and set aside;
[0065] 4) The carbon-graphite material treated in step 3) is placed in the an...
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