Super hydrophilic oil-water separation filter paper and preparation method thereof
An oil-water separation and super-hydrophilic technology, applied in separation methods, liquid separation, chemical instruments and methods, etc., can solve the problems of reuse of separation materials and disposal of environmental pollution, cumbersome steps, complicated processes, etc., and achieve the distribution of raw materials. Relatively easy to control, environmentally friendly, and the effect of inhibiting adhesion
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Embodiment 1
[0026] (1) In terms of weight ratio, mix 0.5g of nano-silica particles, 0.5mL of silane coupling agent 4140, 0.25mL of triethylamine, 10mL of absolute ethanol, and 0.5mL of deionized water, and sonicate for 30 minutes until uniformly dispersed;
[0027] (2) Completely immerse medium-speed qualitative filter paper (average pore size 30-50nm) in the mixture, and disperse it by ultrasonic for 3 minutes. Take out the filter paper and let it dry naturally to obtain a super-hydrophilic oil-water separation filter paper.
[0028] After measurement: the contact angle between the filter paper and water is less than 5°, and the contact angle between the filter paper and petroleum ether (boiling point 60-90°C) under water is 152°.
[0029] (3) Use a common filter device for oil-water separation, and fold the super-hydrophilic oil-water separation filter paper into a funnel shape and put it into the filter funnel. Mix petroleum ether (boiling point 60-90°C) and deionized water at a volum...
Embodiment 2
[0031] (1) In terms of weight ratio, mix 0.5g of nano-silica particles, 0.5mL of silane coupling agent 4140, 0.25mL of triethylamine, 10mL of absolute ethanol, and 0.5mL of deionized water, and sonicate for 30 minutes until uniformly dispersed;
[0032] (2) Completely immerse medium-speed qualitative filter paper (average pore size 8-11nm) in the mixture, and disperse it by ultrasonic for 5 minutes. Take out the filter paper and let it dry naturally to obtain a super-hydrophilic oil-water separation filter paper.
[0033] After measurement: the contact angle between the filter paper and water is less than 5°, and the contact angle between the filter paper and petroleum ether (boiling point 60-90° C.) under water is 155°.
[0034] (3) Use a common filter device for oil-water separation, and fold the super-hydrophilic oil-water separation filter paper into a funnel shape and put it into the filter funnel. Mix petroleum ether (boiling point 60-90°C) and deionized water at a volu...
Embodiment 3
[0036] (1) In terms of weight ratio, mix 0.5g of nano-silica particles, 0.25mL of silane coupling agent 4140, 0.5mL of triethylamine, 10mL of absolute ethanol, and 0.5mL of deionized water, and sonicate for 30 minutes until uniformly dispersed;
[0037] (2) Completely immerse medium-speed qualitative filter paper (average pore size 30-50nm) in the mixture, and disperse it by ultrasonic for 3 minutes. Take out the filter paper and let it dry naturally to obtain a super-hydrophilic oil-water separation filter paper.
[0038] After measurement: the contact angle between the filter paper and water is less than 5°, and the contact angle between the filter paper and petroleum ether (boiling point 60-90° C.) under water is 150°.
[0039](3) Use a common filter device for oil-water separation, and fold the super-hydrophilic oil-water separation filter paper into a funnel shape and put it into the filter funnel. Mix petroleum ether (boiling point 60-90°C) and deionized water at a volu...
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