High-temperature-resistant high-sealing-performance rubber gasket preparation method
A rubber gasket, high sealing technology, applied in the field of polymer materials, can solve the problems of poor chemical corrosion resistance and heat resistance, decreased gasket service life, insufficient mechanical properties of gaskets, etc., to enhance mechanical properties, Enhanced sealing effect, increased quantity effect
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Embodiment 1
[0032] Preparation of alkaline mixture:
[0033] Put bean dregs and sawdust into an oven at a mass ratio of 5:1, dry at 70°C for 2 hours, and put them into a planetary ball mill after drying at a speed of 150r / min and a ball-to-material ratio of 10:1. Grind the mixed material, put the mixed material and a 6% sodium hydroxide solution in a mass ratio of 1:10 into a beaker, stir with a stirrer at a speed of 200r / min for 50min to prepare an alkaline mixed solution;
[0034] Preparation of hot reactants:
[0035] Put the above-mentioned alkaline mixed solution and aluminum chloride powder into the reactor at a mass ratio of 30:1, raise the temperature inside the reactor to 80°C, stir at a constant temperature of 80r / min for 45min with a stirring device, and pour into the reactor Fill the interior with nitrogen to increase the pressure in the reactor to 1.0MPa, increase the temperature in the reactor to 180°C, and react at constant temperature and pressure for 2 hours to obtain a ...
Embodiment 2
[0045] Preparation of alkaline mixture:
[0046] Put the bean dregs and wood chips into the oven at a mass ratio of 5:1, dry at a temperature of 75°C for 2.5 hours, and put them into a planetary ball mill after drying at a speed of 165r / min and a ball-to-material ratio of 10:1 The mixed material was obtained by grinding down, and the mixed material and the sodium hydroxide solution with a mass fraction of 8% were dropped into a beaker at a mass ratio of 1:10, and stirred with a stirrer at a speed of 250r / min for 55min to obtain an alkaline mixed solution;
[0047] Preparation of hot reactants:
[0048] Put the above-mentioned alkaline mixed solution and aluminum chloride powder into the reaction kettle at a mass ratio of 30:1, raise the temperature in the reaction kettle to 90°C, stir at a constant temperature of 52.5min with a stirring device at a speed of 90r / min, and add to the reaction kettle. Fill the kettle with nitrogen to increase the pressure in the reactor to 1.1 MP...
Embodiment 3
[0058] Preparation of alkaline mixture:
[0059] Put bean dregs and sawdust into an oven at a mass ratio of 5:1, dry for 3 hours at a temperature of 80°C, and put them into a planetary ball mill after drying at a speed of 180r / min and a ball-to-material ratio of 10:1. Grind the mixed material, put the mixed material and 10% sodium hydroxide solution in a mass ratio of 1:10 into the beaker, stir with a stirrer at a speed of 300r / min for 60min to obtain an alkaline mixed solution;
[0060] Preparation of hot reactants:
[0061] Put the above-mentioned alkaline mixed solution and aluminum chloride powder into the reaction kettle at a mass ratio of 30:1, raise the temperature in the reaction kettle to 100°C, stir at a constant temperature of 100r / min for 60min with a stirring device, and pour into the reaction kettle Fill the interior with nitrogen to increase the pressure in the reactor to 1.2MPa, increase the temperature in the reactor to 200°C, and react at constant temperatur...
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