Modified phenolic resin and preparation method thereof
A phenolic resin and modification technology, applied in the field of phenolic resin and its preparation, can solve the problems of affecting product performance, poor hydrophobicity, low strength, etc., and achieve the effects of improving hydrophobicity, improving toughness and reducing waste water.
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Embodiment 1
[0024] Add 5 kg of waste water to 10 kg of dodecyltriethoxysilane for hydrolysis for later use; turn on the stirring, pump 200 kg of preheated phenol into the reactor under a vacuum of -0.08MPa, and react Change the kettle to a normal pressure state, put 12 kg of boric acid into it, heat up to 140°C, react at 140-160°C for 2.5 hours, and then cool down to below 60°C; then add 110 kg of cashew nut oil in turn, and add benzenesulfonic acid to adjust the pH value 2-3, then heat up to 100°C; react at a temperature of 100-120°C for 2 hours, then immediately cool down to 85°C. Add 40 kg of waste water, then add an appropriate amount of ammonia water to adjust the pH value to 7-8, and add 96 kg of paraformaldehyde in six times within 60 minutes at a temperature of 80-85°C. Pay attention to controlling the temperature in the kettle. After adding formaldehyde, 10- Heat up to 90°C in 15 minutes, react at 90-95°C for 1.0 hour, start vacuum dehydration when the reaction time is up, the va...
Embodiment 2
[0026] Add 5 kg of waste water to 10 kg of dodecyltriethoxysilane for hydrolysis for later use; turn on the stirring, and pump 200 kg of preheated phenol into the reactor under a vacuum of -0.065 MPa, and put Change the reaction kettle to the normal pressure state, add 12 kg of boric acid, heat up to 140°C, react at 140-160°C for 3 hours, and cool down to below 55°C after the reaction time; then add 110 kg of cashew nut oil in turn, and add appropriate amount of benzenesulfonic acid Adjust the pH value to 2-3 and raise the temperature to 100°C, react at 100-120°C for 1.5 hours, and immediately cool down to 85°C; add 40 kg of waste water, and then add an appropriate amount of ammonia to adjust the pH value to 7-8. At 85°C, add 96 kg of paraformaldehyde in five times within 60 minutes. Pay attention to controlling the temperature in the kettle. After adding formaldehyde, raise the temperature to 90°C within 10-15 minutes and react at 90-95°C for 1.2 hours, then start vacuum dehyd...
Embodiment 3
[0028] Add 6 kg of waste water to 12 kg of dodecyltriethoxysilane for hydrolysis and standby; turn on the stirring, and pump 200 kg of preheated phenol into the reaction kettle under a vacuum of -0.07MPa, and put Change the reaction kettle to a normal pressure state, put 16 kg of boric acid into it, and heat up to 140°C; react at 140-160°C for 3.5 hours, and cool down to below 50°C after the reaction time; then add 110 kg of cashew nut oil in turn, and add an appropriate amount of benzenesulfonic acid Adjust the pH value to 2-3, raise the temperature to 100°C; react at 100-120°C for 2.5 hours, then immediately cool down to 85°C; add 45 kg of waste water, and then add an appropriate amount of ammonia to adjust the pH value to 7-8; At 85°C, add 98 kg of paraformaldehyde in six times within 60 minutes. Pay attention to controlling the temperature in the kettle. After adding formaldehyde, the temperature will rise to 90°C in 10-15 minutes, and react at 90-95°C for 1 hour. The react...
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