CN104894840B - Preparation method of hydrophobic thin-film material for protective facial mask - Google Patents
Preparation method of hydrophobic thin-film material for protective facial mask Download PDFInfo
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- CN104894840B CN104894840B CN201510289413.0A CN201510289413A CN104894840B CN 104894840 B CN104894840 B CN 104894840B CN 201510289413 A CN201510289413 A CN 201510289413A CN 104894840 B CN104894840 B CN 104894840B
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- preparation
- film materials
- protective mask
- hydrophobic
- cloth material
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Abstract
The invention discloses a preparation method of a hydrophobic thin-film material for a protective facial mask. The preparation method comprises the following steps: surface chemical etching treatment, namely putting a non-woven cloth material 0.2-0.8mm thick into an alkaline solution for treatment for 0.5-4 hours; taking out the non-woven cloth material after the surface chemical etching treatment, and flushing the surface of the non-woven cloth material by use of deionized water until the pH is less than 9; grafting stearic acid molecules, namely adding the non-woven cloth material after the surface chemical etching treatment to the aqueous solution of stearic acid at a temperature within the range of 30-60 DEG C, and under the condition of regulating the pH value to the range of 4-6 by use of the pH regulating agent, keeping at a constant temperature for 12-72 hours in the presence of a catalyst, namely obtaining the hydrophobic thin-film material for the protective facial mask. The hydrophobic thin-film material for the protective facial mask obtained by use of the method is excellent in hydrophobicity, and capable of effectively preventing the adsorption of water vapor on the facial mask; and high filtering efficiency and low respiration resistance of the material can be kept.
Description
Technical field
The present invention relates to haze protection technology field, it is more particularly to a kind of preparation of protective mask hydrophobic-film materials
Method.
Background technology
Increasing and nano material large-scale production with haze weather, the environmental exposure of particulate matter and Exposed chance
Increase, wearing mask is one of the most effective method.Mask mainly has cotton mask, non-woven fabrics gauze mask and mouth containing electrostatic layer
Cover three classes.Wherein cotton mask is less to respiratory resistance, but filter efficiency is low；Non-woven fabrics gauze mask filter efficiency is high, but to breathing
Resistance larger；Mask containing electrostatic layer overcomes the defect of above two mask, has filter efficiency high, little to respiratory resistance
Feature.The material therefor of mask containing electrostatic layer is mainly electret, and electret can be under the effect of the factors such as highfield, pole
Change and long term storage electric charge, make particulate matter captured in the presence of electric field force.Because respiratory is with the exhalation of steam, meeting
Water is adsorbed on mask, the absorption of water can destroy mask electrostatic layer, so that the mask filtration efficiency containing electrostatic layer is reduced, steam simultaneously
Condense in and in passage, lead to respiratory resistance to increase.
Therefore need mask containing electrostatic layer is improved, by optimizing surface treatment technology, develop one kind and can strengthen mouth
The material of cover inner and outer surface layers hydrophobic performance, makes effectively to stop vapor in the absorption of electrostatic filter layer, makes material keep higher
Filter efficiency and less respiratory resistance.
Content of the invention
(1) technical problem to be solved
The technical problem to be solved in the present invention is how to increase the hydrophobic properties of the surface of protective mask material, and provides
A kind of preparation method of protective mask hydrophobic-film materials.
(2) technical scheme
In order to solve above-mentioned technical problem, the invention provides a kind of preparation side of protective mask hydrophobic-film materials
Method, the method comprises the steps:
Step one: surface etch chemistry is processed: nonwoven cloth material is placed in process 0.5-4h in aqueous slkali, standby；Surface
Chemical etching is processed to be made the concavo-convex top layer of nonwoven cloth material surface one layer of nanoscale of formation and produces a large amount of activity hydroxies.
Step 2: grafting stearic acid molecule: add step in the Hard Fat aqueous acid being 30～60 DEG C to temperature once table
Nonwoven cloth material after the chemical etching process of face, adjusts ph value under conditions of 4～6 with ph regulator, in the presence of catalyst
Under, constant temperature keeps 12～72h, obtains final product protective mask hydrophobic-film materials.The protective mask hydrophobic-film materials obtaining
Water contact angle >=150 degree.
Preferably, described step one also include take out through surface etch chemistry process after nonwoven cloth material, spend from
Sub- water rinses its surface to ph ＜ 9.
Preferably, the thickness of described nonwoven cloth material is 0.2-0.8mm.
Preferably, described aqueous slkali is naoh solution, and solution concentration is 2mol/l～6mol/l.
Preferably, described ph regulator is hcl solution, and solution concentration is 0.1mol/l～0.5mol/l.
Preferably, described stearic concentration is 1～3g/100ml.
Preferably, described catalyst is n- N-Hydroxysuccinimide and 1- (3- dimethylamino-propyl) -3- ethyl carbon two
Inferior amine salt hydrochlorate, the concentration of described n- N-Hydroxysuccinimide is 0.1～1g/100ml, described 1- (3- dimethylamino third
Base) -3- ethyl-carbodiimide hydrochloride concentration be 0.1～1g/100ml..
Preferably, described stearic acid and n- N-Hydroxysuccinimide and 1- (3- dimethylamino-propyl) -3- ethyl carbon two
The weight of imide hydrochloride salt catalyst is than for 1～3:0.1～1:0.1～1.
Present invention also offers using the described protection obtained by the preparation method of protective mask hydrophobic-film materials
Mask hydrophobic-film materials.
Water contact angle >=150 degree of described protective mask hydrophobic-film materials, filter efficiency >=99%, air penetrability >=
110mm/s.
(3) beneficial effect
The preparation method of the protective mask hydrophobic-film materials that the present invention provides, simple, with low cost；Using this
Protective mask obtained by inventive method is excellent with hydrophobic-film materials hydrophobic performance, can effectively stop vapor on mask
Absorption, makes material keep high filter efficiency and little respiratory resistance.
Specific embodiment
With reference to embodiment, embodiments of the present invention are described in further detail.Following examples are used for illustrating this
Invention, but can not be used for limiting the scope of the present invention.
Embodiment 1:
Nonwoven cloth material is placed in 2h in the naoh solution of 2mol/l, after taking-up, deionized water rinses nonwoven surface extremely
Ph ＜ 9.Nonwoven cloth material after processing is placed in the container filling deionized water, water-bath is heated to 50 DEG C and keeps
Constant temperature, is 4～6 with the hydrochloric acid conditioning solution ph value of 0.1mol/l, by 2.0g stearic acid, 1.0g n- N-Hydroxysuccinimide and
0.5g1- (3- dimethylamino-propyl) -3- ethyl-carbodiimide hydrochloride priority adds in above-mentioned solution, uses 0.1mol/l again
Hydrochloric acid conditioning solution ph value be 4～6, after constant temperature 24h take out.Measurement contact angle on non-woven fabrics for the water is 155 degree.
Embodiment 2:
Nonwoven cloth material is placed in 1h in the naoh solution of 4mol/l, after taking-up, deionized water rinses nonwoven surface extremely
Ph ＜ 9.Nonwoven cloth material after processing is placed in the container filling deionized water, water-bath is heated to 30 DEG C and keeps
Constant temperature, is 4～6 with the hydrochloric acid conditioning solution ph value of 0.1mol/l, by 1.5g stearic acid, 0.5g n- N-Hydroxysuccinimide and
0.5g1- (3- dimethylamino-propyl) -3- ethyl-carbodiimide hydrochloride priority adds in above-mentioned solution, uses 0.1mol/l again
Hydrochloric acid conditioning solution ph value be 4～6, after constant temperature 48h take out.Measurement contact angle on non-woven fabrics for the water is 154 degree.
Comparative example:
Hydrophobic performance index-the water contact angle of the non-woven fabrics of the non-woven fabrics after processing through the inventive method and before processing is carried out
Contrast: result shows, the non-woven fabrics water contact angle not processed is 102 degree, and the non-woven fabrics after processing through the inventive method
Water contact angle >=150 degree, reach super-hydrophobic rank.
Embodiment of above is merely to illustrate the present invention, rather than limitation of the present invention.Although with reference to embodiment to this
Bright be described in detail, it will be understood by those within the art that, technical scheme is carried out various combinations,
Modification or equivalent, without departure from the spirit and scope of technical solution of the present invention, the right that all should cover in the present invention will
Ask in the middle of scope.
Claims (6)
1. a kind of preparation method of protective mask hydrophobic-film materials is it is characterised in that the method comprises the steps:
Step one: surface etch chemistry is processed: nonwoven cloth material is placed in process 0.5-4h in aqueous slkali, standby；
Step 2: grafting stearic acid molecule: add step in the Hard Fat aqueous acid being 30～60 DEG C to temperature once coming to the surface
Learn the nonwoven cloth material after etching processing, ph value is adjusted under conditions of 4～6 with ph regulator, in catalyst n- hydroxysuccinimidyl
In the presence of acid imide and 1- (3- dimethylamino-propyl) -3- ethyl-carbodiimide hydrochloride, constant temperature keeps 12～72h, obtains final product
Protective mask hydrophobic-film materials；
Described aqueous slkali is naoh solution, and solution concentration is 2mol/l～6mol/l；
Described stearic concentration is 1～3g/100ml；
The concentration of described n- N-Hydroxysuccinimide is 0.1～1g/100ml, described 1- (3- dimethylamino-propyl) -3- second
The concentration of base carbodiimide hydrochloride is 0.1～1g/100ml；
Described stearic acid is urged with n- N-Hydroxysuccinimide and 1- (3- dimethylamino-propyl) -3- ethyl-carbodiimide hydrochloride
The weight of agent is than for 1～3:0.1～1:0.1～1.
2. the preparation method of protective mask hydrophobic-film materials according to claim 1 is it is characterised in that described step
Rapid one also includes taking out the nonwoven cloth material after processing through surface etch chemistry, and deionized water rinses its surface to ph ＜ 9.
3. the preparation method of protective mask hydrophobic-film materials according to claim 1 is it is characterised in that described nonwoven
The thickness of cloth material is 0.2-0.8mm.
4. the preparation method of protective mask hydrophobic-film materials according to claim 1 is it is characterised in that described ph
Regulator is hcl solution, and solution concentration is 0.1mol/l～0.5mol/l.
5. usage right requires the protection obtained by the preparation method of protective mask hydrophobic-film materials described in any one of 1-4
Mask hydrophobic-film materials.
6. protective mask hydrophobic-film materials according to claim 5 are it is characterised in that described protective mask is with dredging
Water contact angle >=150 degree of water thin-film material, air penetrability >=110mm/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510289413.0A CN104894840B (en) | 2015-05-29 | 2015-05-29 | Preparation method of hydrophobic thin-film material for protective facial mask |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510289413.0A CN104894840B (en) | 2015-05-29 | 2015-05-29 | Preparation method of hydrophobic thin-film material for protective facial mask |
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| Publication Number | Publication Date |
|---|---|
| CN104894840A CN104894840A (en) | 2015-09-09 |
| CN104894840B true CN104894840B (en) | 2017-01-18 |
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| CN201510289413.0A Expired - Fee Related CN104894840B (en) | 2015-05-29 | 2015-05-29 | Preparation method of hydrophobic thin-film material for protective facial mask |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1259480C (en) * | 2004-05-21 | 2006-06-14 | 广东溢达纺织有限公司 | Method for producing speical-finished pure cotton rapid-drying intelligent textile |
| WO2009070895A1 (en) * | 2007-12-06 | 2009-06-11 | 3552853 Canada Inc. | Fast film forming water based barrier coating |
| CN102277721B (en) * | 2011-06-28 | 2013-04-03 | 东华大学 | Method for finishing nanometer aluminum oxide fluoride-free superhydrophobic textile fabric |
| CN102965910B (en) * | 2012-09-11 | 2014-12-24 | 陕西科技大学 | Preparation method of super-hydrophobic polyester textile |
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