CN105056577A - Preparation method of super-oleophylic and super-hydrophobic oil-water separation membrane - Google Patents
Preparation method of super-oleophylic and super-hydrophobic oil-water separation membrane Download PDFInfo
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- CN105056577A CN105056577A CN201510529807.9A CN201510529807A CN105056577A CN 105056577 A CN105056577 A CN 105056577A CN 201510529807 A CN201510529807 A CN 201510529807A CN 105056577 A CN105056577 A CN 105056577A
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Abstract
The invention discloses a preparation method of a super-oleophylic and super-hydrophobic oil-water separation membrane. The base of the oil-water separation membrane is a stainless steel wire mesh. According to the preparation method, the stainless steel wire mesh is covered by a PTFE-PPS composite membrane by adopting a three-layer spraying method; the 50-500 meshes of stainless steel wire mesh is subjected to alkali washing, acid washing, phosphorization and passivation and then is dried; base-layer suspension liquid is prepared, a spraying gun is adopted to spray the base-layer suspension liquid on the wire mesh, and the stainless steel wire mesh is transferred into a high-temperature furnace for plasticizing; middle-layer suspension liquid is prepared and is plasticized in the high-temperature furnace after being sprayed; pure PTFE dispersion liquid serving as surface-layer suspension liquid is transferred into the high-temperature furnace for plasticizing after being sprayed on the wire mesh and then is cooled with the furnace to obtain the super-oleophylic and super-hydrophobic oil-water separation membrane. The oil-water separation membrane has the advantages of being good in hydrophobic effect, high in oleophylic speed and oleophylic strength, not prone to shedding and the like and has good chemical medicine corrosion resisting capacity, and the preparation method is simple and convenient and fast to operate and has wide application prospect in the fields of petrifaction, environmental protection and the like.
Description
Technical field
The invention belongs to chemical industry and polymer-function material technical field, relate to the preparation method of the super-hydrophobic water-oil separating film of a kind of super oleophylic specifically.
Background technology
Oily waste water, as a kind of common pollution sources, has great harm to environmental protection and the ecological balance, and water is the valuable source produced and live, and the water-oil separating step therefore in oiliness sewage treatment process seems very important.At present, the method preparing the super-hydrophobic water-oil separating film of super oleophylic in prior art has a variety of, as micromachined method, sol-gel process, laser and plasma etching method, chemical etching method, electrochemical process, vapour deposition process, template-based extrusion method etc.But the raw material that the method technique of the super-hydrophobic water-oil separating film of these super oleophylics of preparation of the prior art is used are special, process equipment is expensive and operating process is complicated, is unfavorable for large-scale industrial production.
Summary of the invention
The deficiency that the present invention exists to overcome prior art, provides a kind of method of the water-oil separating film utilizing the super oleophylic of method preparation of spraying-high temperature plasticizing super-hydrophobic.
The present invention is achieved by the following technical solutions: the preparation method of the water-oil separating film that a kind of super oleophylic is super-hydrophobic, the substrate of the water-oil separating film that super oleophylic is super-hydrophobic is 50 ~ 500 object silk screens, the surface of silk screen is coated with one deck PTFE-PPS composite membrane, and the preparation method of water-oil separating film comprises the steps:
A, by 50 ~ 500 object silk screens successively after alkali cleaning, pickling, phosphatization and passivation step, silk screen is being carried out drying and processing;
B, preparation bottom suspension, in bottom suspension, the content of PPS is the content of 70%, PTFE is 10%, and adds auxiliary agent and a small amount of TiO
2and Cr
2o
3;
C, employing spray gun spraying bottom suspension, after on bottom suspension spray to silk screen, proceed in the high temperature furnace of 300 ~ 350 DEG C, high temperature plasticizing 10min by silk screen;
D, preparation intermediate layer suspension, intermediate layer suspension mainly plays a transition role, and in the suspension of intermediate layer, PPS and PTFE ratio is 1:1, and in the suspension of intermediate layer, the content of PPS and PTFE is 40%, and adds auxiliary agent;
E, employing spray gun spraying intermediate layer suspension, after on intermediate layer suspension spray to silk screen, proceed in the high temperature furnace of 340 ~ 350 DEG C by silk screen, high temperature plasticizing 15min;
F, adopt spray gun using pure PTFE dispersion liquid as surface layer suspension spray to silk screen on after, proceeded to by silk screen in the high temperature furnace of 350 ~ 360 DEG C and plastify 30min, silk screen cools with stove afterwards, namely obtains the water-oil separating film that super oleophylic is super-hydrophobic.
Described silk screen is woven wire or fabric, and described woven wire comprises stainless steel cloth, copper mesh or wire netting, and described fabric comprises terylene silk net, nylon mesh or aramid fiber silk screen.Spray distance when adopting spray gun spraying is 500 ~ 800mm, and spray gun pressure remains on 0.3 ~ 0.4Mpa.
Described surface layer suspension water-oil separating of the present invention film has the key stratum of super oleophylic and super-hydrophobicity, the composition of surface layer suspension to be solid content be 60% pure PTFE dispersion liquid, auxiliary agent is ethanol or n-butanol.
The invention has the beneficial effects as follows: the method that the present invention prepares the super-hydrophobic water-oil separating film of super oleophylic utilizes the method for three layers of overspray to spray stainless steel cloth, and the constituent content proportioning of the suspension of every one deck spraying is different, surface layer suspension water-oil separating film in the present invention has the key stratum of super oleophylic and super-hydrophobicity, the composition of surface layer suspension to be solid content be 60% pure PTFE dispersion liquid.The water-oil separating film that the super oleophylic adopting preparation method of the present invention to prepare is super-hydrophobic, there is the advantages such as hydrophobic effect is good, oleophylic speed fast, oleophylic intensity height difficult drop-off, and there is good chemical resistance corrosion ability, preparation method is simple and convenient, is with a wide range of applications in the field such as petrochemical industry and environmental protection.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is described in detail.
The preparation method of the water-oil separating film that a kind of super oleophylic is super-hydrophobic, the substrate of the water-oil separating film that super oleophylic is super-hydrophobic is 50 ~ 500 object stainless steel cloths, the surface of stainless steel cloth is coated with one deck PTFE-PPS composite membrane, the preparation method of the water-oil separating film that super oleophylic is super-hydrophobic comprises the steps: a, by 50 ~ 500 object stainless steel cloths successively after alkali cleaning, pickling, phosphatization and passivation step, stainless steel cloth is being carried out drying and processing; B, preparation bottom suspension, in bottom suspension, the content of PPS is the content of 70%, PTFE is 10%, and adds auxiliary agent and a small amount of TiO
2and Cr
2o
3; C, employing spray gun spraying bottom suspension, after bottom suspension spray is online to stainless steel wire, proceed in the high temperature furnace of 300 ~ 350 DEG C, high temperature plasticizing 10min by stainless steel cloth; D, preparation intermediate layer suspension, intermediate layer suspension mainly plays a transition role, and in the suspension of intermediate layer, PPS and PTFE ratio is 1:1, and in the suspension of intermediate layer, the content of PPS and PTFE is 40%, and adds auxiliary agent; E, employing spray gun spraying intermediate layer suspension, after intermediate layer suspension spray is online to stainless steel wire, proceed in the high temperature furnace of 340 ~ 350 DEG C by stainless steel cloth, high temperature plasticizing 15min; F, adopt spray gun using after pure PTFE dispersion liquid is online as surface layer suspension spray to stainless steel wire, stainless steel cloth is proceeded in the high temperature furnace of 350 ~ 360 DEG C and plastify 30min, stainless steel cloth cools with stove afterwards, namely obtains the water-oil separating film that super oleophylic is super-hydrophobic.
Described stainless steel cloth can be the woven wire such as copper mesh or wire netting, also can be the fabrics such as terylene silk net, nylon mesh or aramid fiber silk screen.Spray distance when adopting spray gun spraying is 500 ~ 800mm, and spray gun pressure remains on 0.3 ~ 0.4Mpa.Surface layer suspension water-oil separating of the present invention film has the key stratum of super oleophylic and super-hydrophobicity, the composition of surface layer suspension to be solid content be 60% pure PTFE dispersion liquid, auxiliary agent is ethanol or n-butanol.
Finally should be noted that; above content is only in order to illustrate technical scheme of the present invention; but not limiting the scope of the invention; the simple modification that those of ordinary skill in the art carries out technical scheme of the present invention or equivalently to replace, does not all depart from essence and the scope of technical solution of the present invention.
Claims (5)
1. the preparation method of the water-oil separating film that a super oleophylic is super-hydrophobic, it is characterized in that: the substrate of the water-oil separating film that described super oleophylic is super-hydrophobic is 50 ~ 500 object silk screens, the surface of silk screen is coated with one deck PTFE-PPS composite membrane, and the preparation method of the water-oil separating film that super oleophylic is super-hydrophobic comprises the steps:
A, by 50 ~ 500 object silk screens successively after alkali cleaning, pickling, phosphatization and passivation step, silk screen is being carried out drying and processing;
B, preparation bottom suspension, in bottom suspension, the content of PPS is the content of 70%, PTFE is 10%, and adds auxiliary agent and a small amount of TiO
2and Cr
2o
3;
C, employing spray gun spraying bottom suspension, after on bottom suspension spray to silk screen, proceed in the high temperature furnace of 300 ~ 350 DEG C, high temperature plasticizing 10min by silk screen;
D, preparation intermediate layer suspension, in the suspension of intermediate layer, PPS and PTFE ratio is 1:1, and in the suspension of intermediate layer, the content of PPS and PTFE is 40%, and adds auxiliary agent;
E, employing spray gun spraying intermediate layer suspension, after on intermediate layer suspension spray to silk screen, proceed in the high temperature furnace of 340 ~ 350 DEG C by silk screen, high temperature plasticizing 15min;
F, adopt spray gun using pure PTFE dispersion liquid as surface layer suspension spray to silk screen on after, proceeded to by silk screen in the high temperature furnace of 350 ~ 360 DEG C and plastify 30min, silk screen cools with stove afterwards, namely obtains the water-oil separating film that super oleophylic is super-hydrophobic.
2. the preparation method of the water-oil separating film that a kind of super oleophylic according to claim 1 is super-hydrophobic, it is characterized in that: described silk screen is woven wire or fabric, described woven wire comprises stainless steel cloth, copper mesh or wire netting, and described fabric comprises terylene silk net, nylon mesh or aramid fiber silk screen.
3. the preparation method of the water-oil separating film that a kind of super oleophylic according to claim 1 and 2 is super-hydrophobic, is characterized in that: spray distance when adopting spray gun spraying is 500 ~ 800mm, and spray gun pressure remains on 0.3 ~ 0.4Mpa.
4. the preparation method of the water-oil separating film that a kind of super oleophylic according to claim 1 and 2 is super-hydrophobic, is characterized in that: in described step f the composition of surface layer suspension to be solid content be 60% pure PTFE dispersion liquid.
5. the preparation method of the water-oil separating film that a kind of super oleophylic according to claim 1 is super-hydrophobic, is characterized in that: described auxiliary agent is ethanol or n-butanol.
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| CN201510529807.9A CN105056577A (en) | 2015-08-26 | 2015-08-26 | Preparation method of super-oleophylic and super-hydrophobic oil-water separation membrane |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105802424A (en) * | 2016-05-31 | 2016-07-27 | 国网河南省电力公司周口供电公司 | Modifying method of super-hydrophobic performance of indoor power transformation equipment |
| CN106110708A (en) * | 2016-06-15 | 2016-11-16 | 张之恒 | A kind of continuous oily-water seperating equipment based on super-hydrophobic super-oleophylic nethike embrane |
| CN107583312A (en) * | 2017-09-20 | 2018-01-16 | 大连理工大学 | A kind of preparation method of super-hydrophobic plate film for water-oil separating |
| CN108686615A (en) * | 2017-04-06 | 2018-10-23 | 北京化工大学 | A kind of high-gravity rotating bed filler and its preparation method and application |
| CN112221201A (en) * | 2020-09-11 | 2021-01-15 | 中国科学院理化技术研究所 | Oil-water separation pipe with hydrophobic and oleophylic surface and preparation method and application thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105802424A (en) * | 2016-05-31 | 2016-07-27 | 国网河南省电力公司周口供电公司 | Modifying method of super-hydrophobic performance of indoor power transformation equipment |
| CN106110708A (en) * | 2016-06-15 | 2016-11-16 | 张之恒 | A kind of continuous oily-water seperating equipment based on super-hydrophobic super-oleophylic nethike embrane |
| CN108686615A (en) * | 2017-04-06 | 2018-10-23 | 北京化工大学 | A kind of high-gravity rotating bed filler and its preparation method and application |
| CN107583312A (en) * | 2017-09-20 | 2018-01-16 | 大连理工大学 | A kind of preparation method of super-hydrophobic plate film for water-oil separating |
| CN112221201A (en) * | 2020-09-11 | 2021-01-15 | 中国科学院理化技术研究所 | Oil-water separation pipe with hydrophobic and oleophylic surface and preparation method and application thereof |
| CN112221201B (en) * | 2020-09-11 | 2022-04-19 | 中国科学院理化技术研究所 | Oil-water separation pipe with hydrophobic and oleophylic surface and preparation method and application thereof |
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