Method for preparing multifunctional rubber assistant by recycling alkali-weight-reduction processing discharged liquor
A rubber additive and multi-functional technology, applied in the field of preparation of multi-functional rubber additives, can solve the problems of low product purity and limited industrial application, so as to improve the plasticization speed, improve the anti-vulcanization reversion performance, and reduce waste water. The effect of emissions
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Embodiment 1
[0018] Alkali decrement drainage passes through the advection type sedimentation tank and activated carbon filter in turn, and then enters the acid analysis tank. Under stirring at 80 rpm, sulfuric acid is added. When the pH of the water quality drops to 4, continue to stir and age for 2 hours, and finally Filtration yielded crude terephthalic acid. In the reaction kettle, add 60 parts of terephthalic acid, 40 parts of stearic acid, 160 parts of water, and 60 parts of sodium hydroxide, stir, and after the terephthalic acid and stearic acid are completely dissolved, add zinc chloride solution 60 parts, stir while adding zinc chloride, the stirring speed is 60 rev / min, add in 20 minutes, continue to stir for 40 minutes after adding zinc chloride, centrifuge, filter cake is washed and dried, that is multi-functional Finished rubber additives.
[0019] The rubber formula used is: NR 100, stearic acid 2, N220 45, silica 8, Si69 0.8, aromatic hydrocarbon oil 5, protective wax 2, 40...
Embodiment 2
[0021] Alkali decrement drains pass through the advection sedimentation tank and activated carbon filter in sequence, and then enter the acid analysis tank. Under stirring at 80 rpm, add sulfuric acid. When the pH of the water drops to 4, continue to stir and age for 3 hours, and finally Filtration yielded crude terephthalic acid. In the reaction kettle, add 60 parts of terephthalic acid, 40 parts of stearic acid, 120 parts of water, and 10 parts of sodium hydroxide, stir, and after the terephthalic acid and stearic acid are completely dissolved, add zinc chloride solution 60 parts, stir while adding zinc chloride, the stirring speed is 100 rpm, and finish adding in 30 minutes. After adding zinc chloride, continue stirring for 30 minutes, centrifuge, filter cake is washed and dried, that is, multi-functional Finished rubber additives.
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