WO2018199510A2 - Oil adsorbing fabric and method for manufacturing same - Google Patents

Oil adsorbing fabric and method for manufacturing same Download PDF

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Publication number
WO2018199510A2
WO2018199510A2 PCT/KR2018/004194 KR2018004194W WO2018199510A2 WO 2018199510 A2 WO2018199510 A2 WO 2018199510A2 KR 2018004194 W KR2018004194 W KR 2018004194W WO 2018199510 A2 WO2018199510 A2 WO 2018199510A2
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WO
WIPO (PCT)
Prior art keywords
oil
oil absorption
adsorption
water
water repellent
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PCT/KR2018/004194
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French (fr)
Korean (ko)
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WO2018199510A3 (en
Inventor
김주환
김광대
Original Assignee
신우산업주식회사
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Publication of WO2018199510A2 publication Critical patent/WO2018199510A2/en
Publication of WO2018199510A3 publication Critical patent/WO2018199510A3/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
    • B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
    • E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0471—Surface coating material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/10—Filtering material manufacturing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20—Controlling water pollution; Waste water treatment
    • Y02A20/204—Keeping clear the surface of open water from oil spills

Definitions

  • the present invention relates to an oil adsorption cloth and a method for manufacturing the same, and more specifically, to absorb oil by performing water repellent treatment on the adsorption part or cover part, which is a component of the adsorption cloth, but not absorbing water, so that water, water, etc.
  • the oil adsorption cloth does not sink in water due to the difference in specific gravity from water even if the oil adsorption bubble absorbs the oil sufficiently, and in particular, by adjusting the amount of the binder added to the water repellent agent to maintain a high water contact angle, It provides a manufacturing method.
  • oil adsorption units are used for disaster recovery related to oil spills, or industrial areas such as laboratories, laboratories, warehouses and production lines, chemical waste disposal companies dealing with chemicals as the concept of industrial hygiene spreads, as well as gas stations and vehicles. And also used for oil removal in mechanical maintenance or home.
  • the feather 6 of the bird is filled in the mesh network 2, and the sewing stitch is formed to be partitioned horizontally and vertically so that the filled feather 6 does not lump together on one side ( It consists of 4) as the core element of the invention, through which there is little absorption of water, and it is the object and effect of the invention to be able to adsorb only the outflow oil floating on the sea.
  • an artificial adsorption unit (hereinafter referred to as an 'adsorption fabric') that can replace natural feathers is required.
  • the adsorption fabric is capable of mass production while completely eliminating moisture, selective absorption of oil and preventing sedimentation as a float. Should be.
  • the absorbent cloth is preferably polypropylene (PP) or polyester (PET) fiber, and very preferably, the fiber (PP or PET) is molded in a melt blown method or in the form of a nonwoven fabric. It is preferable that it is an adsorption cloth by the method of laminating
  • the melt blown is a method of forming the fiber into a structure having a multi-layer density, and thus has an advantage of doubling the adsorption force on oil.
  • the adsorption cloth is to adsorb only the oil while floating the sea surface, to be water-repellent coating to prevent water ingress to prevent sedimentation, the water-repellent coating is preferably made by dip coating or deposition (deposition).
  • the deposition method is a preferred method compared to the dip coating method in that the method can maximize the effect while minimizing the use of the coating liquid.
  • the dip coating method is a coating method in which a coating body is immersed in a coating solution and then dried to remove the coating material.
  • the coating solution is immersed in a solvent containing a water repellent agent so that the water repellent agent is impregnated in the absorbent fabric, and then the water repellent coating of the adsorption fabric is dried. To make it happen.
  • the absorbent cloth is a multi-layered structure
  • the water-repellent agent is impregnated into the absorbent fabric more than necessary during the dip coating, so that the consumption of the water-repellent agent is large, the drying time is not only imparted, and the absorbent cloth containing the water-repellent agent is torn off by its own weight during towing. There is a problem that is not easy to handle. Therefore, a deposition method can be considered.
  • the vapor deposition method is a method of forming a thin film on the surface of an object by heating or evaporating a metal or a compound in a vacuum state. Since the water repellent is coated only on the surface of the absorbent fabric, the amount of the water repellent can be minimized and rapid drying is possible. Therefore, it is possible to expect an improvement in the competitiveness of the product through cost reduction and productivity improvement.
  • the present invention has been proposed to solve the above problems, and an object of the present invention is to provide an amount of the binder added to the water repellent agent to be firmly bonded to the cover or the adsorption portion of the absorbent fabric. It is to provide an oil adsorption cloth and its manufacturing method to maintain the super water-repellency of the adsorption cloth by adjusting the optimum amount in consideration of the contact angle of the water to the coated cover or adsorption unit.
  • another object of the present invention is to provide an oil adsorbent cloth and a method for manufacturing the same so that the water repellent is not released even when an external impact is applied to the adsorption cloth by adding a binder to the water repellent agent.
  • another object of the present invention is to provide an oil adsorption cloth and a method of manufacturing the same, by forming an oil absorption point on the cover or the adsorption portion to minimize the reduction of oil absorption and at the same time improve the oil absorption rate.
  • Another object of the present invention is to provide an oil-absorbing adsorbent fabric and a method of manufacturing the same so that the adsorbent retains durability in an environment of a strong acid or strong base, because the water repellent itself has chemical resistance.
  • the adsorption unit for absorbing and retaining oil; And a cover part attached to at least one surface of the adsorption part to cover the front surface of the adsorption part, and a water repellent coated on at least one of a surface and a rear surface thereof, wherein the cover part is formed only on one surface of the adsorption part.
  • the water repellent is also coated on the other side of the non-adsorbing part, and the water repellent is mixed with the binder so that the water repellent is fixed to the adsorption part or the cover part, and the amount of the binder is greater than 0 and less than 3% by volume based on 100 vol% of the water repellent.
  • an oil adsorption cloth is provided.
  • an oil absorption point is formed in the oil adsorption cloth so that the cover and the adsorption part are physically coupled.
  • the oil absorption point is preferably formed locally on the adsorption cloth by the fusion method.
  • the said oil absorption point is formed so that the said adsorption cloth may have an area of 12 square centimeters-51 square centimeters when the reference area of an adsorption cloth is 1 square meter.
  • the area of the unit oil absorption point is preferably in the range of 4? To 16 ?.
  • a deviation between the distance between the specific oil absorption point and one oil absorption point adjacent thereto and the distance between the specific oil absorption point and another oil absorption point adjacent thereto is 35 It is preferred not to exceed%.
  • the deviation between the distance between the specific oil absorption point and any one oil absorption point adjacent thereto and the minimum distance between the specific oil absorption point and the distance of the edge of the suction cloth adjacent thereto is less than 35%.
  • the water repellent is preferably in the form of the oxide powder coated with at least one selected from silicone oil, polydimethylsiloxane, polyvinylsiloxane, polyphenylmethylsiloxane.
  • the amount of binder added in order to ensure that the water-repellent agent coated on the cover or adsorption unit is firmly bonded to the cover or adsorption unit in consideration of the contact angle of water to the cover or adsorption unit coated with the water repellent agent By adjusting the amount, the effect of maintaining the super water repellency of the adsorption cloth is expected to be maximized.
  • the binder to the water repellent agent, the effect of preventing the water repellent from being released even if an external impact is applied to the absorbent fabric is expected.
  • the water repellent itself has chemical resistance, it is expected that the adsorption cloth retains durability in an environment of a strong acid or a strong base even without performing a separate treatment.
  • FIG. 1 is a perspective view for explaining the adsorption cloth according to an embodiment of the present invention
  • Figure 2 is a detailed cross-sectional view showing for explaining the adsorption cloth according to an embodiment of the present invention
  • Figure 3 is a schematic diagram showing for explaining the water repellent process of the cover unit according to an embodiment of the present invention
  • Figure 4 is a schematic diagram showing for explaining the manufacturing process of the mat according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram for performing a dropping test of the water repellent using a tape after coating the water repellent according to an embodiment of the present invention
  • FIG. 9 is a graph showing the relationship between the area of the oil absorption point and the oil absorption rate and the oil absorption amount formed in the suction cloth according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram showing the use of the adsorption cloth according to a preferred embodiment of the present invention.
  • FIG. 1 is a perspective view illustrating the adsorption cloth according to an embodiment of the present invention
  • Figure 2 is a detailed cross-sectional view of the adsorption cloth.
  • the adsorption cloth 100 is for absorbing oil, and is mainly used to rectify oil spills when an accident such as oil spill occurs at sea, rivers, reservoirs, or lakes, or when oil leaks from a machine or a vehicle. If it occurs, it can be used for oil removal purposes.
  • Adsorption cloth 100 is configured to include an adsorption portion 130, the cover portion 110 surrounding the adsorption portion 130 for oil adsorption.
  • the cover 110 may cover both surfaces of the adsorption unit 130, but may cover only one surface as illustrated in FIG. 2B.
  • FIG. 2A it will be described in the form as shown in FIG.
  • Adsorption unit 130 is, for example, a fiber body made of at least one selected from polypropylene (polypropylene, PP) and polyester (polyester, PET) is preferably formed of a multi-layer density structure, among which It is preferable that the polyester is good and inexpensive.
  • the adsorption unit 130 may be molded in a melt-blown manner, or may be formed by stacking at least one or more nonwoven fabric fibers.
  • the cover part 110 includes a first cover part 111 covering one surface of the adsorption part 130 and a second cover part 113 covering the other surface, and the first cover part 111 and the second cover part ( 113 is at least one surface is water-repellent coating, so that only the oil is adsorbed while rejecting the inflow of water into the adsorption unit 130. Then, since the adsorption cloth 100 is adsorbed only with the oil content which is low in specific gravity compared with water, it does not sink in water.
  • the method of laminating the two cover portions 111 and 113 is not particularly limited.
  • the water repellent coating is a process of coating the water repellent on the cover 110, for example, wherein the water repellent is at least one selected from silicon oil, polydimethylsiloxane, polyvinylsiloxane, and polyphenylmethylsiloxane in an oxide powder such as a metal oxide.
  • the binder is the same component as the above water repellent, and the curing agent is further added. By making the component of a binder and a water repellent agent the same, the matching property of a water repellent agent and a binder can be made excellent.
  • the water-repellent agent is mixed with the solvent, the cover portion is water-repellent coating through a dip coating immersing the cover portion 110 in the solvent, and then the solvent is scattered through the drying process.
  • a small amount of a binder may be further added to improve the binding force of the water repellent to the cover part, and the binder hardens to increase the binding force between the cover part and the water repellent.
  • the binder is added in excess of 0 to 3% by volume, based on 100% by volume of the water repellent, and when it is added above, the contact angle of water is lowered, so that the water may not be absorbed by the absorbent cloth but may be attached.
  • the above range of the binder is of critical significance because of the problem of degradation.
  • the binder is not used in the acrylic, and when the acrylic binder is used, the water repellency is inferior, and when used for fixing and adhering the water repellent, the surface property (water repellency) of the water repellent is caused.
  • the water-repellent agent and the binder peeling phenomenon occurs when the material used to bond the water-repellent agent on the cover material to water for a long time.
  • the acrylic binder-based binder is not suitable as a sorbent material used in an environment in which water and oil are mixed.
  • the binder is preferably one of the same or similar components as the water repellent agent for compatibility with the water repellent agent, but is not necessarily so, it should be considered that there is practically no limitation of the binder except for the composition which should be excluded such as acrylic.
  • oxide may be silica (SiO 2 ), which is used in powder form.
  • various oxide powders may be applied in addition to silica.
  • the first cover part 111 and the second cover part 113 are preferably airtightly laminated so that the adsorption part 130 is prevented from contacting with water, and very preferably the edges are fused to heat, high frequency or ultrasonic welding.
  • the fusion unit 140 is formed on the rim as shown by lamination.
  • the cover portion 110 is preferably made of any one material selected from polypropylene and polyester, it is more preferred that the polyester. Compared to polypropylene, the polyester has a higher bonding strength with the binder, so that the water-repellent coating powders are well adhered to each other.
  • Figure 3 is a schematic diagram shown to explain the water-repellent coating process of the cover portion
  • Figure 4 is a schematic diagram shown to explain the manufacturing process of the absorbent cloth.
  • the manufacturing process of the adsorption cloth is as follows.
  • a first step of dip coating the cover part 110 for example, the solvent 151 impregnated with silica powder
  • a second step of fixing the solvent to the cover part 110, the adsorption part 130 therebetween In this manner, the pair of cover parts 110 are laminated to produce the adsorption cloth 100.
  • the first step is a dip coating step of the cover part 110, in which the water repellent is coated on the surface of the cover part 110 by impregnating the cover part 110 in a solvent.
  • This first step is performed in the coating unit 150, as shown in FIG.
  • the cover 110 is supplied in a wound form, and is immersed in a solvent through the first guide 153 to coat the water repellent on the surface of the cover 110.
  • the first step further includes a pressing step for uniformly coating the solvent containing the water repellent on the cover 110, this pressing step is made by a second guide 155 consisting of a pair of rollers. That is, by applying a constant pressure to the cover portion 110 passing between the pair of rollers, if more than the necessary water repellent is buried, it is to be recovered to the water tank 157.
  • the second step is a step of fixing the water repellent to the cover unit 110, as shown in the fixing unit 160.
  • the fixing unit 160 receives the cover unit 110 supplied through the coating unit 150 to dry and pressurize the solvent 151 coated on the cover unit 110, thereby fixing the solvent to the cover unit 110.
  • the fixing part 160 may further include heating means for quick drying induction, and the heating means may be formed along the pressure roller 161 or the cover 110 copper wire.
  • the cover part 110 generated through the fixing part 160 is manufactured as the adsorption cloth 100 through a third step.
  • the adsorption part 130 is interposed therebetween, and the first cover part 111 and the second cover part 113 are hermetically laminated to form the adsorption cloth 100.
  • the production is complete.
  • the cover unit 110 is formed on only one surface of the adsorption unit 130 may be configured as shown in Fig. 4 (b).
  • the adsorption cloth 100 is hermetically laminated by the fusion machine 170, the fusion machine 170 is preferably a fusion machine using ultrasonic waves.
  • a plurality of adsorption cloth 100 is formed in the form of a sheet, as shown in Figure 10, each of the adsorption cloth 100 is provided with a perforation line can be used as many pieces of each of the adsorption cloth 100 by cutting the perforation line as needed. .
  • the oil absorption point 145 is shown in FIG. 10, and it will be mentioned later.
  • FIG. 5 is a graph showing the water contact angle according to the binder concentration of the water repellent agent according to an embodiment of the present invention
  • Figure 6 is a graph showing the water contact angle according to the amount of the binder added water repellent agent according to an embodiment of the present invention
  • Figure 7 Is a graph showing the water contact angle change of the adsorption cloth according to the presence or absence of the binder of the water repellent agent according to the preferred embodiment of the present invention
  • 9 is a schematic diagram illustrating a dropping test of a water repellent agent
  • FIG. 9 is an experimental photograph showing a process of absorbing oil after forming an oil absorption point according to an exemplary embodiment of the present invention
  • FIG. 10 is an adsorption cloth according to an exemplary embodiment of the present invention. It is a graph which shows the relationship between the area of an oil absorption point, oil absorption rate, and oil absorption amount which were formed in the
  • the amount of the binder added to the water repellent was 1, 2, and 3% by volume based on 100% by volume of the water repellent, all showed water contact angles of 150 ° or more, so that the water repellency was maintained to prevent smooth oil absorption. Do not. However, in the case of 4.5% by volume and 6% by volume, since the water contact angle becomes small, that is, the water is likely to stay on the surface of the adsorption cloth 100, the water repellency is poor and may interfere with oil absorption. Therefore, the amount of the binder added is preferably more than 0 and 3% by volume based on 100% by volume of the water repellent, and is of critical significance.
  • the water-repellent coating powder does not adhere well to the cover material, and the water repellency is poor as the surface of the cover material is overexposed by the peeling phenomenon. Roughness is also important.
  • the binder is uniformly coated on the water repellent powders by dip coating and has a super water repellent performance by the double roughness of the naturally formed powders. If the amount of the binder is large, the excess binder completely covers the powders having the double roughness, leading to a decrease in water repellency.
  • the lower limit is preferably 0.5% by volume.
  • the horizontal axis means the volume of the water droplets.
  • % means the added volume% of the binder. In short, when the binder exceeds 3%, the rate of decrease of the water contact angle was found to increase.
  • the volume of water droplets on the surface of the sample is measured and the degree of change is measured by measuring the water contact angle.
  • the droplets receive more force downward due to gravity. Accordingly, since the force of gravity increases as the volume of water droplets increases, the water contact angle drops when the surface is inferior in water repellency.
  • the contact angle is not a problem when the binder is not added to the water repellent agent, but if the coating layer of the water repellent agent is damaged by an external impact (here, the drop test by tape), the water repellency may be sharply lowered. In the case where the binder is added, it can be seen that the damage does not occur even by an external impact.
  • the oil absorption point is preferably formed to have an area of 12 square centimeters to 51 square centimeters when the reference area of the adsorption cloth is 1 square meter. If it is out of the upper and lower limits, there is a problem that the oil absorption rate is too late, and if the oil absorption rate is out of the upper limit, the increase in the oil absorption rate does not occur further, while the oil absorption amount is significantly lower, which is not preferable. Therefore, the above numerical range with respect to the area of oil absorption point has a critical significance at each limit value.
  • the area of the unit oil absorption point is preferably in the range of 4 ⁇ square millimeter to 16 ⁇ square millimeter. This means that the diameter of the oil absorption point is 4mm to 8mm. If the diameter of the oil absorption point is less than 4mm, that is, if the area of the oil absorption point is less than 4 ⁇ square millimeter, loss due to workability and product defects occurs during production. In the case where the oil absorption point exceeds 8 mm, that is, when the area of the oil absorption point exceeds 16 ⁇ square millimeters, the damage caused by the decrease in oil absorption is greater than the increase in the oil absorption rate. Therefore, the numerical range above the oil absorption point diameter has its critical significance at each limit value. On the other hand, as long as the critical significance of the area is satisfied, the shape is not limited to a circle, and may be a polygon or an ellipse corresponding to the area range.
  • a deviation between the distance between the specific oil absorption point and any one oil absorption point adjacent thereto and the distance between the specific oil absorption point and another oil absorption point adjacent thereto is 35 It is preferable to be within%, and the distance between oil absorption points measures the distance between the specific oil absorption point and the center of each oil absorption point adjacent thereto. This is to prevent the oil absorption point is generated by locally concentrated in a specific position of the adsorption cloth. That is, it is preferable that the oil absorption point is evenly distributed on the adsorption cloth, and the improvement of the oil absorption speed can be maximized only when the variation in the distance between the defect points is small as described above. If the oil absorption point is locally localized, the oil absorption will be correct at the point where the oil absorption point is localized, but the oil absorption speed will still be slow at the point where the oil absorption point is not.
  • the deviation of the minimum distance between the distance between the specific oil absorption point and any one oil absorption point adjacent thereto and the distance between the specific oil absorption point and the edge of the suction cloth adjacent thereto is less than 35%.
  • the oil absorption amount of oil decreases slightly as the area of the oil absorption point 145 increases until the area of the oil absorption point 145 formed is 51 square centimeters.
  • the oil absorption rate increases rapidly.
  • the area of the oil absorption point 145 exceeds 51 square centimeters, the increase in the oil absorption rate is insignificant, and the oil absorption amount continues to decrease instead. Therefore, it can be said that the area of the oil absorption point 145 set by this invention is preferably 51 square centimeters or less.
  • the unit display is g / g in the case of Example oil absorption, comparative oil absorption amount, and increase amount, respectively, and the increase rate is calculated as [ ⁇ (A-B) / B ⁇ ⁇ 100]%.
  • the experimental conditions are as follows.
  • the oil absorption amount was 25.6g for the hydraulic flow and up to 30.7g for the cutting oil.
  • the adsorption part of the comparison target absorbed a relatively small amount, and the oil absorption amount was 12.6 g as bunker oil, and the oil absorption amount of the most oil absorption target was only 22.6 g. From this, it was confirmed that the result of increasing the oil removal rate as much as 115% less than 31% for the various oils, it can be seen that the adsorption cloth of the present invention shows superior performance compared to the comparative object.
  • the present invention along with the amount of oil absorption, the durability is good, even under various conditions, the water repellency is continued, it will be described with reference to the following table.
  • Tables 2 and 3 are measured values of the water contact angle for each time by floating the adsorption cloth and the comparative object of the present invention in pH 2 (strongly acidic) and pH 12 (strongly basic) water, respectively.
  • the water contact angle when the adsorption cloth was first floated was measured to be 162.9 °, 163.9 ° after 30 minutes, and 160.8 ° after one hour.
  • the comparison object is 151.6 ° when the water is initially floated, which is 11.3 ° lower than the absorbent cloth, and it is 144.7 ° over 30 minutes and 142.5 after an hour, which is 9.1 than the minimum water float. It was measured to lower.
  • the adsorption bubble was measured to maintain a water contact angle of 162.9 ° when initially floated in water, 161.1 ° after 30 minutes, and 161.7 ° after one hour.
  • the comparison object is 151.6 ° when the water is initially floated, which is 11.3 ° lower than the absorbent cloth, and it is 144.8 ° with time and 141.8 ° after an hour, which is about 9.8 ° lower than when it is initially floated. It was measured to lose.
  • the adsorption cloth of the present invention was able to maintain good water repellency even in basic water as well as acidic acid, but the comparative object has a low water contact angle from the time it is first floated, and gradually lowers the water contact angle with time. It can be seen that the water repellency decreases with time. That is, the comparison target is not only low in water repellency compared to the adsorption cloth, in particular, the comparison target is measured that the water repellency is significantly lower with time, after a certain time may be settled underwater due to the water repellency decrease Can be predicted.
  • the adsorption cloth of the present invention prevents the penetration of water, while the oil absorption to the oil is superior to that of the comparative object, and maintains a good water contact angle in the water phase through the water-repellent coating, and thus has a good floating state It is possible to prevent sedimentation and ultimately to prevent water pollution.

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Abstract

The present invention relates to an oil adsorbing fabric and a method for manufacturing the same and, more specifically, to an oil adsorbing fabric wherein an adsorption part or a cover part, which is a constituent element of the oil adsorbing fabric, absorbs oil but not water thanks to a water repellency process applied thereto, whereby the oil adsorbing fabric can sufficiently absorb oil on water such as the sea, a river, etc., without submergence due to a difference in specific gravity from water and can retain super-water repellency particularly by adjusting an amount of a binder added to a water-repellent agent so as to keep a high water contact angle, and a method for manufacturing the same.

Description

유분 흡착포 및 그 제조방법Oil adsorption cloth and its manufacturing method
본 발명은 유분 흡착포 및 그 제조방법에 관한 것으로, 더욱 상세하게 설명하면, 흡착포의 구성요소인 흡착부 또는 커버부에 발수처리를 수행함으로써 유분을 흡수하되 수분은 흡수하지 아니하여 바다, 강 등 수상에서 유분 흡착포가 유분을 충분히 흡수하더라도 수분과의 비중차이로 수중으로 가라앉지 않도록 하며, 특히 발수제에 첨가된 결합제의 양을 조절하여 물접촉각을 높게 유지함으로써 초발수성이 유지될 수 있도록 하는 유분 흡착포 및 그 제조방법을 제공한다.The present invention relates to an oil adsorption cloth and a method for manufacturing the same, and more specifically, to absorb oil by performing water repellent treatment on the adsorption part or cover part, which is a component of the adsorption cloth, but not absorbing water, so that water, water, etc. The oil adsorption cloth does not sink in water due to the difference in specific gravity from water even if the oil adsorption bubble absorbs the oil sufficiently, and in particular, by adjusting the amount of the binder added to the water repellent agent to maintain a high water contact angle, It provides a manufacturing method.
일반적으로 유분 흡착부는 유분 유출과 관련된 재해복구용으로 사용되거나, 산업 위생의 개념이 확산되면서 화학약품을 다루는 실험실, 연구실, 창고 및 생산라인, 화학 폐기물 처리업체 등과 같은 산업 분야는 물론, 주유소와 차량 및 기계정비 내지는 가정 등에서도 유분 제거 용도로 사용되고 있다.In general, oil adsorption units are used for disaster recovery related to oil spills, or industrial areas such as laboratories, laboratories, warehouses and production lines, chemical waste disposal companies dealing with chemicals as the concept of industrial hygiene spreads, as well as gas stations and vehicles. And also used for oil removal in mechanical maintenance or home.
이러한 매트는 대한민국 등록실용신안 20-0251579호 "유출 유분 흡착부"(이하, '선행기술' 이라 함)를 통해 등록된 바 있다.These mats were registered through the Republic of Korea Utility Model Registration No. 20-0251579 "Spilled oil adsorption unit" (hereinafter referred to as 'prior art').
선행기술은 유출 유분 흡착부에 있어서, 메쉬망(2)내에 조류의 깃털(6)이 채워지며, 상기 채워진 깃털(6)이 한쪽으로 뭉치게 쏠리지 않도록 가로 및 세로로 구획되도록 형성된 재봉박음질부(4)로 이루어진 것을 발명의 핵심 요소로 하고 있으며, 이를 통하여 물의 흡수는 거의 없고, 바다 위에 떠있는 유출 유분만을 흡착시킬 수 있도록 하는 것을 발명의 목적 및 효과로 하고 있다.In the prior art, in the outflow oil adsorption unit, the feather 6 of the bird is filled in the mesh network 2, and the sewing stitch is formed to be partitioned horizontally and vertically so that the filled feather 6 does not lump together on one side ( It consists of 4) as the core element of the invention, through which there is little absorption of water, and it is the object and effect of the invention to be able to adsorb only the outflow oil floating on the sea.
그러나 선행기술의 조류의 깃털은 공급에 한계가 존재하므로, 대량생산과 더불어 물량공급이 용이하지 않으며, 따라서 사고 수습용으로는 적합하지 못한 문제점이 있다. 또한, 깃털의 유분 흡수량에 한계가 존재하며, 흡수 정도도 계량화되지 않았고, 수요가 많아지면 단가가 폭등할 수 있는 문제점도 있다. However, since the feather of the bird of the prior art has a limit to the supply, it is not easy to supply the quantity along with mass production, and thus there is a problem that is not suitable for accident prosecution. In addition, there is a limit to the amount of oil absorption of feathers, the degree of absorption is not quantified, and there is a problem that the unit price may rise when demand increases.
따라서 천연의 깃털을 대체할 수 있는 인공의 흡착부(이하, '흡착포'라 함)가 요구되며, 흡착포는 수분의 완전한 배척 및 유분의 선택적 흡수와 부유체로서 침강을 예방하면서 대량생산이 가능한 것이어야 한다.Therefore, an artificial adsorption unit (hereinafter referred to as an 'adsorption fabric') that can replace natural feathers is required. The adsorption fabric is capable of mass production while completely eliminating moisture, selective absorption of oil and preventing sedimentation as a float. Should be.
이러한 흡착포로는 폴리프로필렌(polypropylene, PP) 또는 폴리에스터(polyester, PET) 섬유인 것이 바람직하며, 매우 바람직하게는 섬유(PP 또는 PET)를 멜트 블로운(melt blown) 방식으로 성형하거나 부직포 형태의 섬유를 적어도 하나 이상 적층 하는 방식에 의한 흡착포인 것이 바람직하다.The absorbent cloth is preferably polypropylene (PP) or polyester (PET) fiber, and very preferably, the fiber (PP or PET) is molded in a melt blown method or in the form of a nonwoven fabric. It is preferable that it is an adsorption cloth by the method of laminating | stacking at least 1 or more fibers.
여기서 멜트 블로운은 섬유를 다층밀도의 구조체로 성형하는 방식이며, 따라서 유분에 대한 흡착력이 배가되도록 할 수 있다는 장점이 있다.Here, the melt blown is a method of forming the fiber into a structure having a multi-layer density, and thus has an advantage of doubling the adsorption force on oil.
또한, 흡착포는 해수면을 부유하면서 유분만을 흡착하되, 수분 유입을 방지하여 침강을 예방할 수 있도록 발수 코팅되어야 하며, 발수 코팅은 딥 코팅(dip coating) 또는 증착(deposition)에 의해 이루어지는 것이 바람직하다. In addition, the adsorption cloth is to adsorb only the oil while floating the sea surface, to be water-repellent coating to prevent water ingress to prevent sedimentation, the water-repellent coating is preferably made by dip coating or deposition (deposition).
특히, 증착 방법이 코팅액의 사용을 최소화하면서도 효과를 최대화할 수 있는 방안이라는 점에서 딥 코팅 방식에 비하여 바람직한 방법이라고 할 것이다.In particular, the deposition method is a preferred method compared to the dip coating method in that the method can maximize the effect while minimizing the use of the coating liquid.
한편, 딥 코팅 방법은 피코팅체를 코팅액 안에 담그었다가 빼서 건조시키는 도장법으로, 코팅액으로서 발수제가 수용된 용매에 흡착포를 침지시켜 흡착포에 발수제가 함침되도록 한 후, 건조 과정을 통하여 흡착포의 발수 코팅이 이루어지도록 하는 것이다.Meanwhile, the dip coating method is a coating method in which a coating body is immersed in a coating solution and then dried to remove the coating material. The coating solution is immersed in a solvent containing a water repellent agent so that the water repellent agent is impregnated in the absorbent fabric, and then the water repellent coating of the adsorption fabric is dried. To make it happen.
그러나 흡착포는 다층밀도의 구조체로서, 딥 코팅시 필요 이상의 발수제가 흡착포에 함침되므로, 발수제의 소비가 크고, 건조에 오랜 시간이 부여될 뿐만 아니라, 발수제를 머금고 있는 흡착포는 견인 시 자중에 의해 뜯겨져 취급이 용이하지 않은 문제점이 있다. 그러므로, 증착 방법을 고려할 수 있다. However, since the absorbent cloth is a multi-layered structure, the water-repellent agent is impregnated into the absorbent fabric more than necessary during the dip coating, so that the consumption of the water-repellent agent is large, the drying time is not only imparted, and the absorbent cloth containing the water-repellent agent is torn off by its own weight during towing. There is a problem that is not easy to handle. Therefore, a deposition method can be considered.
증착방법은 진공상태에서 금속이나 화합물을 가열 내지는 증발시켜 그 증기를 물체 표면에 얇은 막을 형성하는 방법인데, 흡착포 표면에만 발수제가 코팅되므로, 발수제의 사용량을 최소화할 수 있음은 물론, 신속한 건조가 가능하므로, 생산성 향상과 더불어 원가절감을 통하여 제품의 경쟁력 향상을 기대할 수 있다.The vapor deposition method is a method of forming a thin film on the surface of an object by heating or evaporating a metal or a compound in a vacuum state. Since the water repellent is coated only on the surface of the absorbent fabric, the amount of the water repellent can be minimized and rapid drying is possible. Therefore, it is possible to expect an improvement in the competitiveness of the product through cost reduction and productivity improvement.
그러나 흡착포에 발수제를 증착하기 위해서는 증착을 위한 고가의 장치가 요구되며, 특히, 진공상태에서 증착이 이루어져야 하므로, 진공도의 관리와 유지를 위해서도 막대한 비용이 발생하므로, 개인기업은 물론, 중소기업의 경우에는 초기 자본금의 한계로 인하여 이를 이용하기 용이하지 않다. However, in order to deposit the water repellent on the absorbent cloth, an expensive device for the deposition is required, and in particular, since the deposition must be performed in a vacuum state, a huge cost is incurred for the management and maintenance of the degree of vacuum. Due to the limitation of the initial capital, it is not easy to use.
아울러, 발수제를 적용하는 경우에도 발수성만을 만족시킨다면 발수제의 양 또는 발수제에 첨가되는 첨가제의 양과 발수성과의 상관관계에 대한 고려 없이 해당 발수제를 그대로 사용하므로, 때로는 발수특성이 최적화되지 못하는 문제점도 있다. In addition, even when the water repellent is applied, if only the water repellency is satisfied, since the water repellent is used as it is without considering the amount of the water repellent or the amount of the additive added to the water repellent and the water repellency, there is also a problem that the water repellent properties are sometimes not optimized.
아울러, 기름 유출 사고와 같은 긴급한 상황에서 유분은 신속히 제거되어야 하는데, 이러한 유분의 제거를 위한 시간적 고려가 없이 무조건 흡착포를 현장에 투입하는 문제점도 있다. In addition, the oil should be removed quickly in an emergency situation such as an oil spill accident, there is also a problem in that the adsorption cloth is unconditionally put into the field without time consideration for the removal of this oil.
또한, 공장 또는 연구실과 같은 장소는 강산 또는 강염기의 환경인 경우가 많은데, 이러한 조건에서 유분을 효과적으로 제거하려면 흡착포의 내화학성이 필요한데, 내화학성을 부여하려면 흡착포에 별도의 추가적인 처리를 하여야 하며, 이로인하여 일반 흡착포에 비하여 높은 가격을 형성할 수 밖에 없는 문제점도 있다.In addition, places such as factories or laboratories are often in an environment of strong acids or strong bases, and in order to effectively remove oil under these conditions, the chemical resistance of the adsorption cloth is required.To provide chemical resistance, an additional treatment should be applied to the adsorption cloth. Due to this, there is a problem inevitably forming a higher price than the general adsorption cloth.
본 발명은 전술한 바와 같은 문제점을 해결하기 위해 제안된 것으로, 본 발명의 목적은 흡착포의 커버 또는 흡착부에 코팅되는 발수제가 커버 또는 흡착부에 공고히 결합되도록 하기 위하여 첨가되는 결합제의 양을 발수제가 코팅된 커버 또는 흡착부에 대한 물의 접촉각을 고려하여 최적의 양으로 조절함으로써 흡착포의 초발수성이 최대한 유지되도록 하는 유분 흡착포 및 그 제조방법을 제공하는 것이다. The present invention has been proposed to solve the above problems, and an object of the present invention is to provide an amount of the binder added to the water repellent agent to be firmly bonded to the cover or the adsorption portion of the absorbent fabric. It is to provide an oil adsorption cloth and its manufacturing method to maintain the super water-repellency of the adsorption cloth by adjusting the optimum amount in consideration of the contact angle of the water to the coated cover or adsorption unit.
또한, 본 발명의 다른 목적은 발수제에 결합제를 첨가함으로써 흡착포에 외부 충격이 가해지더라도 발수제가 이탈되지 않도록 하는 유분 흡착포 및 그 제조방법을 제공하는 것이다. In addition, another object of the present invention is to provide an oil adsorbent cloth and a method for manufacturing the same so that the water repellent is not released even when an external impact is applied to the adsorption cloth by adding a binder to the water repellent agent.
또한, 본 발명의 또 다른 목적은 커버 또는 흡착부에 흡유점을 형성함으로써 흡유량의 감소를 최소화하면서 동시에 흡유속도를 보다 제고할 수 있는 유분 흡착포 및 그 제조방법을 제공하는 것이다. In addition, another object of the present invention is to provide an oil adsorption cloth and a method of manufacturing the same, by forming an oil absorption point on the cover or the adsorption portion to minimize the reduction of oil absorption and at the same time improve the oil absorption rate.
또한, 본 발명의 또 다른 목적은 복수의 흡착포가 형성된 단일 시트에 절취선을 형성함으로써 이로부터 단위 흡착포를 절취하여 사용할 수 있도록 하는 유분 흡착포 및 그 제조방법을 제공하는 것이다. It is still another object of the present invention to provide an oil adsorption cloth and a method of manufacturing the same so that the unit adsorption cloth can be cut out and used therefrom by forming a perforation line on a single sheet having a plurality of adsorption cloths formed thereon.
또한, 본 발명의 또 다른 목적은 발수제 자체적으로 내화학성이 존재하므로 별도의 처리를 수행하지 않아도 강산 또는 강염기의 환경에서 흡착포가 내구성을 보유하도록 하는 유분 흡착포 및 그 제조방법을 제공하는 것이다.In addition, another object of the present invention is to provide an oil-absorbing adsorbent fabric and a method of manufacturing the same so that the adsorbent retains durability in an environment of a strong acid or strong base, because the water repellent itself has chemical resistance.
본 발명은 전술한 목적을 달성하기 위하여, 유분을 흡수하여 보유하기 위한 흡착부; 및 상기 흡착부의 적어도 일면에 상기 흡착부 전면을 커버하도록 부착되며, 표면 및 이면 중 적어도 한 부분에 발수제가 코팅되는 커버부;를 포함하며, 상기 커버부가 상기 흡착부의 일면에만 형성되는 경우에는 커버부가 형성되지 않은 흡착부의 다른 일면에도 발수제가 코팅되고, 상기 발수제에는 상기 흡착부 또는 커버부에 발수제가 고정되도록 결합제가 혼합되되, 상기 결합제의 양은 발수제 100부피%를 기준으로 0 초과 3 부피% 이하인 것을 특징으로 하는 유분 흡착포를 제공한다.The present invention, in order to achieve the above object, the adsorption unit for absorbing and retaining oil; And a cover part attached to at least one surface of the adsorption part to cover the front surface of the adsorption part, and a water repellent coated on at least one of a surface and a rear surface thereof, wherein the cover part is formed only on one surface of the adsorption part. The water repellent is also coated on the other side of the non-adsorbing part, and the water repellent is mixed with the binder so that the water repellent is fixed to the adsorption part or the cover part, and the amount of the binder is greater than 0 and less than 3% by volume based on 100 vol% of the water repellent. Provided is an oil adsorption cloth.
상기 유분 흡착포에는 커버와 흡착부가 물리적으로 결합되도록 흡유점이 형성되는 것이 바람직하다.It is preferable that an oil absorption point is formed in the oil adsorption cloth so that the cover and the adsorption part are physically coupled.
상기 흡유점은 융착방식에 의하여 흡착포에 국부적으로 형성되는 것이 바람직하다.The oil absorption point is preferably formed locally on the adsorption cloth by the fusion method.
상기 흡유점은, 흡착포의 기준면적을 1제곱미터로 하였을 때, 상기 흡착포에 12제곱센티미터 내지 51제곱센티미터의 면적을 갖도록 형성되는 것이 바람직하다.It is preferable that the said oil absorption point is formed so that the said adsorption cloth may have an area of 12 square centimeters-51 square centimeters when the reference area of an adsorption cloth is 1 square meter.
흡유점이 원형인 경우, 단위 흡유점의 면적은 4π 내지 16π의 범위인 것이 바람직하다.In the case where the oil absorption point is circular, the area of the unit oil absorption point is preferably in the range of 4? To 16 ?.
특정 흡유점과 이에 인접하는 흡유점이 복수개인 경우, 상기 특정 흡유점과 여기에 인접하는 하나의 흡유점의 거리와, 상기 특정 흡유점과 여기에 인접하는 다른 하나의 흡유점의 거리간의 편차는 35%를 초과하지 않는 것이 바람직하다.When there is a plurality of specific oil absorption points and adjacent oil absorption points, a deviation between the distance between the specific oil absorption point and one oil absorption point adjacent thereto and the distance between the specific oil absorption point and another oil absorption point adjacent thereto is 35 It is preferred not to exceed%.
특정 흡유점과 이에 인접하는 어느 하나의 흡유점의 거리와, 상기 특정 흡유점과 이에 인접하는 흡착포 모서리의 거리 중 최소 거리간의 편차는 35% 이내인 것이 바람직하다.It is preferable that the deviation between the distance between the specific oil absorption point and any one oil absorption point adjacent thereto and the minimum distance between the specific oil absorption point and the distance of the edge of the suction cloth adjacent thereto is less than 35%.
상기 발수제는 산화물 분말에 실리콘 오일, 폴리디메틸실록산, 폴리비닐실록산, 폴리페닐메틸실록산 중에서 선택되는 적어도 하나가 코팅된 형태인 것이 바람직하다.The water repellent is preferably in the form of the oxide powder coated with at least one selected from silicone oil, polydimethylsiloxane, polyvinylsiloxane, polyphenylmethylsiloxane.
이상과 같은 본 발명에 따르면, 커버 또는 흡착부에 코팅되는 발수제가 커버 또는 흡착부에 공고히 결합되도록 하기 위하여 첨가되는 결합제의 양을 발수제가 코팅된 커버 또는 흡착부에 대한 물의 접촉각을 고려하여 최적의 양으로 조절함으로써 흡착포의 초발수성이 최대한 유지되도록 하는 효과가 기대된다.According to the present invention as described above, the amount of binder added in order to ensure that the water-repellent agent coated on the cover or adsorption unit is firmly bonded to the cover or adsorption unit in consideration of the contact angle of water to the cover or adsorption unit coated with the water repellent agent By adjusting the amount, the effect of maintaining the super water repellency of the adsorption cloth is expected to be maximized.
또한, 발수제에 결합제를 첨가함으로써 흡착포에 외부 충격이 가해지더라도 발수제가 이탈되지 않도록 하는 효과가 기대된다.In addition, by adding the binder to the water repellent agent, the effect of preventing the water repellent from being released even if an external impact is applied to the absorbent fabric is expected.
또한, 커버 또는 흡착부에 흡유점을 형성함으로써 흡유량의 감소를 최소화하면서 동시에 흡유속도를 보다 제고할 수 있는 효과가 기대된다.In addition, by forming an oil absorption point on the cover or the adsorption portion, it is expected that the effect of minimizing the reduction of oil absorption and at the same time increasing the oil absorption speed.
또한, 복수의 흡착포가 형성된 단일 시트에 절취선을 형성함으로써 이로부터 단위 흡착포를 절취하여 사용할 수 있도록 하는 효과가 기대된다.In addition, by forming a perforation line in a single sheet on which a plurality of adsorption cloths are formed, an effect of cutting out the unit adsorption cloth from it and using it is expected.
또한, 발수제 자체적으로 내화학성이 존재하므로 별도의 처리를 수행하지 않아도 강산 또는 강염기의 환경에서 흡착포가 내구성을 보유하도록 하는 효과가 기대된다.In addition, since the water repellent itself has chemical resistance, it is expected that the adsorption cloth retains durability in an environment of a strong acid or a strong base even without performing a separate treatment.
도 1은 본 발명의 바람직한 일 실시예에 따른 흡착포를 설명하기 위해 나타낸 사시도,1 is a perspective view for explaining the adsorption cloth according to an embodiment of the present invention,
도 2는 본 발명의 바람직한 일 실시예에 따른 흡착포를 설명하기 위해 나타낸 상세 단면도,Figure 2 is a detailed cross-sectional view showing for explaining the adsorption cloth according to an embodiment of the present invention,
도 3은 본 발명의 바람직한 일 실시예에 따른 커버부의 발수과정을 설명하기 위해 나타낸 모식도,Figure 3 is a schematic diagram showing for explaining the water repellent process of the cover unit according to an embodiment of the present invention,
도 4는 본 발명의 바람직한 일 실시예에 따른 매트의 제조과정을 설명하기 위해 나타낸 모식도,Figure 4 is a schematic diagram showing for explaining the manufacturing process of the mat according to an embodiment of the present invention,
도 5는 본 발명의 바람직한 일 실시예에 따른 발수제의 결합제 농도에 따른 물접촉각을 나타낸 그래프,5 is a graph showing the water contact angle according to the binder concentration of the water repellent agent according to an embodiment of the present invention,
도 6은 본 발명의 바람직한 일 실시예에 따른 발수제의 결합제 농도 및 첨가량에 따른 물접촉각을 나타낸 그래프,6 is a graph showing the water contact angle according to the binder concentration and the addition amount of the water repellent agent according to an embodiment of the present invention,
도 7은 본 발명의 바람직한 일 실시예에 따른 발수제의 결합제 사용 유무 및 외부충격에 따른 흡착포의 물접촉각 변화를 나타낸 그래프,7 is a graph showing the water contact angle change of the adsorption cloth according to the presence or absence of the binder and the external impact of the water repellent according to an embodiment of the present invention,
도 8은 본 발명의 바람직한 일 실시예에 따른 발수제를 코팅한 후 테이프를 이용하여 발수제의 탈락 시험을 수행하는 모식도,8 is a schematic diagram for performing a dropping test of the water repellent using a tape after coating the water repellent according to an embodiment of the present invention,
도 9는 본 발명의 바람직한 일 실시예에 따른 흡착포에 형성된 흡유점의 면적과 흡유속도 및 흡유량의 관계를 나타내는 그래프,9 is a graph showing the relationship between the area of the oil absorption point and the oil absorption rate and the oil absorption amount formed in the suction cloth according to an embodiment of the present invention,
도 10은 본 발명의 바람직한 일 실시예에 따른 흡착포의 사용형태를 나타내는 모식도이다.10 is a schematic diagram showing the use of the adsorption cloth according to a preferred embodiment of the present invention.
이하 본 발명의 바람직한 실시예를 첨부된 도면을 참고하여 상세하게 설명하도록 한다. 또한, 본 발명을 설명함에 있어, 관련된 공지 구성 또는 기능에 대한 구체적인 설명이 본 발명의 요지를 흐릴 수 있다고 판단되는 경우에는 그 상세한 설명은 생략한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.
본 발명을 설명함에 있어서, 정의되는 용어들은 본 발명에서의 기능을 고려하여 정의 내려진 것으로, 이는 당 분야에 종사하는 기술자의 의도 또는 관례 등에 따라 달라질 수 있으므로 그 정의는 본 명세서 전반에 걸친 내용을 토대로 내려져야 할 것이다.In the description of the present invention, terms defined are defined in consideration of functions in the present invention, which may vary according to the intention or custom of a person skilled in the art and the definitions are based on the contents throughout this specification. Will have to be lowered.
도 1은 본 발명의 바람직한 일 실시예에 따른 흡착포를 설명하기 위해 나타낸 사시도이고, 도 2는 흡착포의 상세 단면도이다.1 is a perspective view illustrating the adsorption cloth according to an embodiment of the present invention, Figure 2 is a detailed cross-sectional view of the adsorption cloth.
도시된 바와 같이 흡착포(100)는 유분을 흡수하기 위한 것으로, 주로 해상, 강, 저수지 내지는 호수 등에서 유분 유출 등의 사고가 발생되는 경우에 이를 수습하기 위한 용도로 사용되거나, 기계 내지는 차량에서 누유가 발생할 경우에도 유분 제거를 목적으로 사용될 수 있다.As shown, the adsorption cloth 100 is for absorbing oil, and is mainly used to rectify oil spills when an accident such as oil spill occurs at sea, rivers, reservoirs, or lakes, or when oil leaks from a machine or a vehicle. If it occurs, it can be used for oil removal purposes.
본 발명에 의한 흡착포(100)는 유분 흡착을 위한 흡착부(130), 흡착부(130)를 감싸는 커버부(110)를 포함하여 구성된다. 도 2(a)와 같이 커버부(110)는 흡착부(130)의 양면을 모두 커버하는 것이 바람직하나, 도 2(b)와 같이 일면만 커버하는 것도 가능하다. 여기서는 도 2(a)와 같은 형태로써 설명하기로 한다. Adsorption cloth 100 according to the present invention is configured to include an adsorption portion 130, the cover portion 110 surrounding the adsorption portion 130 for oil adsorption. As illustrated in FIG. 2A, the cover 110 may cover both surfaces of the adsorption unit 130, but may cover only one surface as illustrated in FIG. 2B. Here, it will be described in the form as shown in FIG.
흡착부(130)는 예를 들어 폴리프로필렌(polypropylene, PP) 및 폴리에스터(polyester, PET) 중 선택되는 적어도 하나를 재질로 하는 섬유체로서 다층밀도의 구조체로 성형된 것이 바람직하나, 그 중 흡수력이 양호하면서 가격이 저렴한 폴리에스터인 것이 바람직하다. Adsorption unit 130 is, for example, a fiber body made of at least one selected from polypropylene (polypropylene, PP) and polyester (polyester, PET) is preferably formed of a multi-layer density structure, among which It is preferable that the polyester is good and inexpensive.
이러한 흡착부(130)는 멜트 블로운(Melt-blown) 방식으로 성형된 것이거나, 부직포 형태의 섬유를 적어도 하나 이상 적층한 것이 바람직하다.The adsorption unit 130 may be molded in a melt-blown manner, or may be formed by stacking at least one or more nonwoven fabric fibers.
커버부(110)는 흡착부(130)의 일면을 감싸는 제1커버부(111)와 타면을 감싸는 제2커버부(113)를 포함하며, 제1커버부(111)와 제2커버부(113)는 적어도 일면이 발수코팅되어, 흡착부(130)로 물이 유입되는 것을 배척하면서, 유분만이 흡착되도록 한다. 그러면, 흡착포(100)는 물에 비하여 비중이 낮은 유분만으로 흡착되어 있기 때문에 수중으로 가라앉지 않는다. 두개의 커버부(111, 113)의 합지의 방법은 특별히 제한되지 않는다.The cover part 110 includes a first cover part 111 covering one surface of the adsorption part 130 and a second cover part 113 covering the other surface, and the first cover part 111 and the second cover part ( 113 is at least one surface is water-repellent coating, so that only the oil is adsorbed while rejecting the inflow of water into the adsorption unit 130. Then, since the adsorption cloth 100 is adsorbed only with the oil content which is low in specific gravity compared with water, it does not sink in water. The method of laminating the two cover portions 111 and 113 is not particularly limited.
발수코팅은 발수제를 예를 들어 커버부(110)에 코팅하는 공정인데, 발수제는 금속 산화물 등 산화물 분말에 실리콘 오일(silicon oil), 폴리디메틸실록산, 폴리비닐실록산, 폴리페닐메틸실록산 중에서 선택되는 적어도 하나가 코팅된 형태이다. 결합제는 위 발수제와 동일한 성분으로서, 경화제가 더 첨가된 것이다. 결합제와 발수제의 성분을 동일하게 함으로써, 발수제와 결합제의 정합성을 우수하게 할 수 있다.The water repellent coating is a process of coating the water repellent on the cover 110, for example, wherein the water repellent is at least one selected from silicon oil, polydimethylsiloxane, polyvinylsiloxane, and polyphenylmethylsiloxane in an oxide powder such as a metal oxide. One is in coated form. The binder is the same component as the above water repellent, and the curing agent is further added. By making the component of a binder and a water repellent agent the same, the matching property of a water repellent agent and a binder can be made excellent.
본 발명에서는 발수제를 용매에 섞고, 상기 용매에 커버부(110)를 침지시키는 딥 코팅을 통하여 커버부를 발수코팅 하며, 이후 건조과정을 통하여 용매는 비산된다. In the present invention, the water-repellent agent is mixed with the solvent, the cover portion is water-repellent coating through a dip coating immersing the cover portion 110 in the solvent, and then the solvent is scattered through the drying process.
상기 용매에는 발수제의 커버부에 대한 결합력을 향상하기 위하여 결합제가 소량 더 첨가될 수 있으며, 결합제는 굳으면서 커버부와 발수제간 결합력을 높인다. In the solvent, a small amount of a binder may be further added to improve the binding force of the water repellent to the cover part, and the binder hardens to increase the binding force between the cover part and the water repellent.
결합제는 발수제 100 부피%를 기준으로 하여 0 초과 3부피% 이하로 첨가되며, 그 이상으로 첨가되는 경우에는 물의 접촉각이 낮아져서 물이 흡착포에 흡수는 안되나 부착되어 있을 가능성이 있으며, 따라서 유분의 흡수력이 저하되는 문제점이 있으므로 결합제의 위 범위는 그 임계적 의의가 있다. 그리고, 결합제는 아크릴계는 사용하지 않으며, 아크릴 결합제를 사용할 경우 발수성이 떨어지기 때문에 발수제를 고정 및 접착하기 위해 사용될 경우 발수제의 표면 특성 (발수성)의 저하가 야기된다. 또한, 아크릴 결합제를 커버소재 상 발수제를 접착하기 위해 사용한 소재를 물에 장시간 노출 시켰을 경우 발수제 및 결합제 박리 현상이 발생되는 것이 확인되었다. 이와 같은 결과는 아크릴 결합제계 결합제가 물과 기름이 혼재되어 있는 환경에서 사용되는 유흡착재 소재로는 부적합함을 의미한다. 결합제는 발수제와의 정합성을 위하여 발수제와 동일 또는 유사한 성분의 것을 쓰는 것이 바람직하나, 반드시 그렇지는 않으므로, 아크릴계와 같이 배제되어야 하는 조성을 제외하고는 사실상 결합제의 제한은 없다고 보아야 한다.The binder is added in excess of 0 to 3% by volume, based on 100% by volume of the water repellent, and when it is added above, the contact angle of water is lowered, so that the water may not be absorbed by the absorbent cloth but may be attached. The above range of the binder is of critical significance because of the problem of degradation. In addition, the binder is not used in the acrylic, and when the acrylic binder is used, the water repellency is inferior, and when used for fixing and adhering the water repellent, the surface property (water repellency) of the water repellent is caused. In addition, it was confirmed that the water-repellent agent and the binder peeling phenomenon occurs when the material used to bond the water-repellent agent on the cover material to water for a long time. This result implies that the acrylic binder-based binder is not suitable as a sorbent material used in an environment in which water and oil are mixed. The binder is preferably one of the same or similar components as the water repellent agent for compatibility with the water repellent agent, but is not necessarily so, it should be considered that there is practically no limitation of the binder except for the composition which should be excluded such as acrylic.
산화물의 일 예로서, 실리카(SiO2)를 들 수 있으며, 이를 분말형태로 사용한다. 다만, 실리카 이외에도 다양한 산화물 분말을 적용할 수 있다. An example of the oxide may be silica (SiO 2 ), which is used in powder form. However, various oxide powders may be applied in addition to silica.
제1커버부(111)와 제2커버부(113)는 흡착부(130)가 물과 접촉하는 것이 차단되도록 기밀하게 합지되는 것이 바람직하며, 매우 바람직하게는 테두리가 열, 고주파 또는 초음파 융착에 의해 합지되어 도시된 바와 같이 테두리에 융착부(140)가 형성된다.The first cover part 111 and the second cover part 113 are preferably airtightly laminated so that the adsorption part 130 is prevented from contacting with water, and very preferably the edges are fused to heat, high frequency or ultrasonic welding. The fusion unit 140 is formed on the rim as shown by lamination.
한편, 커버부(110)는 폴리프로필렌 및 폴리에스터 중 선택되는 어느 하나의 소재로 이루어진 것이 바람직하나, 그 중 폴리에스터인 것이 더 바람직하다. 폴리프로필렌에 비해 폴리에스터가 결합제와의 결합력이 높기 때문에 발수코팅된 분말들의 접착이 잘 이루어짐에 따라 발수성능이 보다 뛰어난 것으로 보인다.On the other hand, the cover portion 110 is preferably made of any one material selected from polypropylene and polyester, it is more preferred that the polyester. Compared to polypropylene, the polyester has a higher bonding strength with the binder, so that the water-repellent coating powders are well adhered to each other.
도 3은 커버부의 발수코팅과정을 설명하기 위해 나타낸 모식도이고, 도 4는 흡착포의 제조과정을 설명하기 위해 나타낸 모식도이다. Figure 3 is a schematic diagram shown to explain the water-repellent coating process of the cover portion, Figure 4 is a schematic diagram shown to explain the manufacturing process of the absorbent cloth.
흡착포의 제조과정은 다음과 같다. The manufacturing process of the adsorption cloth is as follows.
먼저, 커버부(110)를 예를 들어 실리카 분말이 함침된 용매(151)에 딥 코팅하는 제1단계, 커버부(110)에 용매를 고착시키는 제2단계, 흡착부(130)를 사이에 두고 한 쌍의 커버부(110)를 합지시켜 흡착포(100)를 생성하는 제3단계를 통해 제작된다.First, a first step of dip coating the cover part 110, for example, the solvent 151 impregnated with silica powder, a second step of fixing the solvent to the cover part 110, the adsorption part 130 therebetween In this manner, the pair of cover parts 110 are laminated to produce the adsorption cloth 100.
제1단계는 커버부(110)의 딥 코팅 단계로서, 용매에 커버부(110)를 함침시켜 커버부(110) 표면에 발수제가 코팅될 수 있도록 하는 단계이다.The first step is a dip coating step of the cover part 110, in which the water repellent is coated on the surface of the cover part 110 by impregnating the cover part 110 in a solvent.
이러한 제1단계는 도 3에 도시된 바와 같이, 코팅부(150)에서 이루어진다.This first step is performed in the coating unit 150, as shown in FIG.
커버부(110)는 권선된 형태로 공급되며, 제1가이드(153)를 통해 용매에 침지되어, 커버부(110) 표면에 발수제가 코팅되는 것이다.The cover 110 is supplied in a wound form, and is immersed in a solvent through the first guide 153 to coat the water repellent on the surface of the cover 110.
한편, 제1단계는 커버부(110)에 발수제가 함유된 용매가 균일하게 코팅되도록 하는 압착단계를 더 포함하며, 이러한 압착단계는 한 쌍의 롤러로 구성된 제2가이드(155)에 의해 이루어진다. 즉, 한 쌍의 롤러 사이를 지나는 커버부(110)에 일정한 압력을 가하여, 필요 이상의 발수제가 묻어날 경우, 수조(157)로 회수될 수 있도록 하는 것이다.On the other hand, the first step further includes a pressing step for uniformly coating the solvent containing the water repellent on the cover 110, this pressing step is made by a second guide 155 consisting of a pair of rollers. That is, by applying a constant pressure to the cover portion 110 passing between the pair of rollers, if more than the necessary water repellent is buried, it is to be recovered to the water tank 157.
이후, 제2단계는 커버부(110)에 발수제를 고착시키는 단계로서, 도시된 바와 같이 고착부(160)에서 이루어진다. 고착부(160)는 코팅부(150)를 통해 공급되는 커버부(110)를 공급받아 커버부(110)에 코팅된 용매(151)를 건조 및 가압함으로써, 커버부(110)에 용매가 고착되도록 하기 위한 영역인 것이며, 이때, 고착부(160)는 빠른 건조유도를 위하여 가열수단이 더 존재할 수 있으며, 가열수단은 가압롤러(161) 또는 커버부(110) 동선에 따라 형성될 수도 있다.Thereafter, the second step is a step of fixing the water repellent to the cover unit 110, as shown in the fixing unit 160. The fixing unit 160 receives the cover unit 110 supplied through the coating unit 150 to dry and pressurize the solvent 151 coated on the cover unit 110, thereby fixing the solvent to the cover unit 110. In this case, the fixing part 160 may further include heating means for quick drying induction, and the heating means may be formed along the pressure roller 161 or the cover 110 copper wire.
고착부(160)를 통해 생성된 커버부(110)는 제3단계를 통해 흡착포(100)로 제작된다.The cover part 110 generated through the fixing part 160 is manufactured as the adsorption cloth 100 through a third step.
이러한 제3단계는 도 4(a)에 도시된 바와 같이 흡착부(130)를 사이에 두고, 제1커버부(111)와 제2커버부(113)가 기밀하게 합지되어 흡착포(100)로서의 제작이 완료된다. 한편, 흡착부(130)의 일면에만 커버부(110)가 형성되는 경우에는 도 4(b)와 같이 장치구성을 할 수도 있다.In the third step, as shown in FIG. 4A, the adsorption part 130 is interposed therebetween, and the first cover part 111 and the second cover part 113 are hermetically laminated to form the adsorption cloth 100. The production is complete. On the other hand, when the cover unit 110 is formed on only one surface of the adsorption unit 130 may be configured as shown in Fig. 4 (b).
이때, 흡착포(100)는 융착기(170)에 의해 기밀하게 합지되며, 융착기(170)는 초음파를 이용한 융착기인 것이 바람직하다.At this time, the adsorption cloth 100 is hermetically laminated by the fusion machine 170, the fusion machine 170 is preferably a fusion machine using ultrasonic waves.
다수의 흡착포(100)가 도 10에 도시된 바와 같이 하나의 시트형태로 형성되고, 각 흡착포(100)간에는 절취선이 마련되어 필요에 따라서 절취선을 절취함으로써 각 흡착포(100)를 필요한 갯수만큼 사용할 수 있다. 물론, 유분 유출 영역이 큰 경우에는 절취할 필요없이 사용할 수도 있다. 도 10에는 흡유점(145)이 표시되어 있으며, 흡유점에 대해서는 후술하기로 한다.A plurality of adsorption cloth 100 is formed in the form of a sheet, as shown in Figure 10, each of the adsorption cloth 100 is provided with a perforation line can be used as many pieces of each of the adsorption cloth 100 by cutting the perforation line as needed. . Of course, when the oil outflow area is large, it can be used without the need for cutting. The oil absorption point 145 is shown in FIG. 10, and it will be mentioned later.
<평가예><Evaluation Example>
도 5는 본 발명의 바람직한 일 실시예에 따른 발수제의 결합제 농도에 따른 물접촉각을 나타낸 그래프, 도 6은 본 발명의 바람직한 일 실시예에 따른 발수제의 결합제 첨가량에 따른 물접촉각을 나타낸 그래프, 도 7은 본 발명의 바람직한 일 실시예에 따른 발수제의 결합제 사용 유무 및 외부충격에 따른 흡착포의 물접촉각 변화를 나타낸 그래프, 도 8은 본 발명의 바람직한 일 실시예에 따른 발수제를 코팅한 후 테이프를 이용하여 발수제의 탈락 시험을 수행하는 모식도, 도 9는 본 발명의 바람직한 일 실시예에 따른 흡착포에 흡유점을 형성한 후 흡유되는 과정을 나타내는 실험 사진, 도 10은 본 발명의 바람직한 일 실시예에 따른 흡착포에 형성된 흡유점의 면적과 흡유속도 및 흡유량의 관계를 나타내는 그래프이다.5 is a graph showing the water contact angle according to the binder concentration of the water repellent agent according to an embodiment of the present invention, Figure 6 is a graph showing the water contact angle according to the amount of the binder added water repellent agent according to an embodiment of the present invention, Figure 7 Is a graph showing the water contact angle change of the adsorption cloth according to the presence or absence of the binder of the water repellent agent according to the preferred embodiment of the present invention, Figure 8 using a tape after coating the water repellent agent according to an embodiment of the present invention 9 is a schematic diagram illustrating a dropping test of a water repellent agent, FIG. 9 is an experimental photograph showing a process of absorbing oil after forming an oil absorption point according to an exemplary embodiment of the present invention, and FIG. 10 is an adsorption cloth according to an exemplary embodiment of the present invention. It is a graph which shows the relationship between the area of an oil absorption point, oil absorption rate, and oil absorption amount which were formed in the
도 5에 도시된 바와 같이, 발수제에 결합제의 첨가량이 발수제 100부피%를 기준으로 1, 2, 3 부피%인 경우에는 모두 150°이상의 물접촉각을 나타내었으므로 발수성이 유지되어 원활한 흡유에 방해받지 않는다. 그러나, 4.5 부피%와 6 부피%인 경우에는 물접촉각이 작아지므로, 즉 물이 흡착포(100)의 표면에 머무를 가능성이 높으므로 발수성이 떨어지며 흡유에 방해가 될 수 있다. 그러므로, 결합제의 첨가량은 발수제 100부피%를 기준으로 0 초과 3 부피% 이하인 것이 바람직하며, 임계적 의의가 있다. 만일, 접착결합제 양이 적은 경우 발수 코팅된 분말이 커버 소재 상에 잘 부착되지 않고 박리 현상에 의해 커버소재 표면이 과다 노출됨에 따라 발수성이 떨어지며, 초발수성을 유지하기 위해서는 표면의 발수 특성뿐만 아니라 표면 거칠기 또한 중요하다. 딥 코팅에 의해 발수 분말들 상에 결합제가 균일하게 코팅되며, 자연적으로 형성된 분말들의 이중 거칠기에 의해 초발수 성능을 가지게 된다. 만일 결합제 양이 많은 경우 과량의 결합제가 이중 거칠기를 가지는 분말들을 완전히 덮어버림에 따라 발수성능의 저하를 초래한다. 하한은 바람직하게는 0.5 부피%인 것이 좋다.As shown in FIG. 5, when the amount of the binder added to the water repellent was 1, 2, and 3% by volume based on 100% by volume of the water repellent, all showed water contact angles of 150 ° or more, so that the water repellency was maintained to prevent smooth oil absorption. Do not. However, in the case of 4.5% by volume and 6% by volume, since the water contact angle becomes small, that is, the water is likely to stay on the surface of the adsorption cloth 100, the water repellency is poor and may interfere with oil absorption. Therefore, the amount of the binder added is preferably more than 0 and 3% by volume based on 100% by volume of the water repellent, and is of critical significance. If the amount of the adhesive binder is small, the water-repellent coating powder does not adhere well to the cover material, and the water repellency is poor as the surface of the cover material is overexposed by the peeling phenomenon. Roughness is also important. The binder is uniformly coated on the water repellent powders by dip coating and has a super water repellent performance by the double roughness of the naturally formed powders. If the amount of the binder is large, the excess binder completely covers the powders having the double roughness, leading to a decrease in water repellency. The lower limit is preferably 0.5% by volume.
도 6을 설명하면 다음과 같다. 여기서, 가로축은 물방울의 부피를 의미한다. 또한, %는 결합제의 첨가된 부피%를 의미한다. 요컨대, 결합제를 3% 초과할 경우 물접촉각의 감소율이 증가됨을 알 수 있었다. 6 is as follows. Here, the horizontal axis means the volume of the water droplets. In addition,% means the added volume% of the binder. In short, when the binder exceeds 3%, the rate of decrease of the water contact angle was found to increase.
실험 과정을 설명하면, 시료(흡착포) 표면에 물방울의 부피를 증가시키며 물접촉각을 측정하여 변화되는 정도를 평가하는데, 물방울의 부피가 증가할수록 중력에 의해 물방울이 아래쪽으로 더 큰 힘을 받게 된다. 이에 따라 물방울의 부피가 증가함에 따라 중력의 힘이 증가하기 때문에 발수성이 떨어지는 표면의 경우 물접촉각이 떨어지는 현상을 보인다. In describing the experimental procedure, the volume of water droplets on the surface of the sample (adsorbent cloth) is measured and the degree of change is measured by measuring the water contact angle. As the volume of water droplets increases, the droplets receive more force downward due to gravity. Accordingly, since the force of gravity increases as the volume of water droplets increases, the water contact angle drops when the surface is inferior in water repellency.
그래프에서 알 수 있는 바와 같이, 결합제 첨가량이 3부피% 미만인 경우에는 물방울의 부피가 증가하는 경우에도 물접촉각의 감소가 관찰되지 않는 반면, 3 부피%를 초과하는 경우에는 물방울의 부피가 증가하는 경우에 물접촉각의 감소가 가속화된다.As can be seen from the graph, when the amount of binder added is less than 3% by volume, a decrease in water contact angle is not observed even when the volume of water droplets is increased. The reduction in water contact angle is accelerated.
도 7에 따르면, 1번과 3번과 같이 결합제의 첨가 유무에 따른 발수 성능은 큰 차이를 보이지 않았다. 그러나, 2번, 4번과 같이 도 8의 테이프를 이용한 발수제 탈락 테스트 실시한 이후에는 결합제를 첨가하지 않은 1번의 경우 2번으로 물접촉각이 급격히 감소하여 발수성이 현저히 떨어지는 것을 확인하였으며, 반면 3번의 경우 발수제 탈락이 거의 일어나지 아니하여 물접촉각 변화가 거의 없었고, 따라서 발수성은 거의 그대로 유지되었다. 즉, 3번의 경우 발수제의 높은 접착안정성을 보였다. According to Figure 7, the water repellent performance according to the presence or absence of the binder as shown in 1 and 3 did not show a big difference. However, after the water repellent dropping test using the tape of Fig. 8 as shown in 2, 4, the water contact angle was sharply decreased to 2 in the case of the 1 which did not add the binder, and the water repellency was significantly decreased, whereas in the case of 3 Little water repellent dropout occurred so that there was little change in water contact angle, and thus the water repellency was almost maintained. That is, in case 3, high adhesion stability of the water repellent was shown.
도 8에 따르면, 발수제에 결합제를 투입하지 않은 경우에는 접촉각은 문제가 없으나, 외부 충격(여기서는 테이프에 의한 탈락 테스트)에 의하여 발수제의 코팅층에 손상이 일어나면 발수성이 급격히 저하될 우려가 있는 반면, 발수제에 결합제를 투입한 경우에는 외부 충격에 의해서도 손상이 일어나지 않음을 알 수 있다.According to FIG. 8, the contact angle is not a problem when the binder is not added to the water repellent agent, but if the coating layer of the water repellent agent is damaged by an external impact (here, the drop test by tape), the water repellency may be sharply lowered. In the case where the binder is added, it can be seen that the damage does not occur even by an external impact.
도시되지는 아니하였으나, 유분에 본 발명의 흡착포(100)를 침잠하였을 때, 흡유점에서부터 최초로 흡유가 시작되어 이로부터 그 주변으로 흡유가 전파된다. 그러므로, 흡착포에 흡유점을 형성하면는 흡유점에서 빠르게 흡유가 시작되어 결국 흡유의 속도를 증가시킨다는 점에서 바람직하다고 할 수 있다.Although not shown, when submerged the adsorption cloth 100 of the present invention in oil, oil absorption is first started from the oil absorption point, and the oil absorption propagates therefrom. Therefore, it can be said that forming an oil absorption point in the adsorption cloth is preferable in that oil absorption starts quickly at the oil absorption point and eventually increases the speed of oil absorption.
상기 흡유점은 흡착포의 기준면적을 1제곱미터로 하였을 때, 12제곱센티미터 내지 51제곱센티미터의 면적을 갖도록 형성되는 것이 바람직하다. 만일 위 하한을 벗어나는 경우라면 흡유속도가 너무 늦은 문제점이 있고, 위 상한을 벗어나는 경우에는 흡유속도의 증가가 더 일어나지 않는 반면 흡유량은 현저하게 낮아지므로 바람직하지 않다. 따라서, 흡유점의 면적에 관한 위 수치범위는 각 한계수치에서 그 임계적 의의를 갖는다.The oil absorption point is preferably formed to have an area of 12 square centimeters to 51 square centimeters when the reference area of the adsorption cloth is 1 square meter. If it is out of the upper and lower limits, there is a problem that the oil absorption rate is too late, and if the oil absorption rate is out of the upper limit, the increase in the oil absorption rate does not occur further, while the oil absorption amount is significantly lower, which is not preferable. Therefore, the above numerical range with respect to the area of oil absorption point has a critical significance at each limit value.
흡유점이 원형인 경우, 단위 흡유점의 면적은 4π제곱밀리미터 내지 16π제곱밀리미터의 범위인 것이 바람직하다. 이는 흡유점의 지름이 4mm ~ 8mm임을 의미하는데, 만일 흡유점의 지름이 4mm 미만인 경우라면, 즉 흡유점의 면적이 4π제곱밀리미터 미만인 경우라면, 생산시 작업성 및 제품의 불량에 의한 손실이 발생될 수 있으며, 8mm를 초과하는 경우에는, 즉 흡유점의 면적이 16π제곱밀리미터를 초과하는 경우에는 흡유속도의 제고보다 흡유량의 저하에 의한 폐해가 더 크다. 따라서, 흡유점 지름의 위 수치범위는 각 한계수치에서 그 임계적 의의를 갖는다. 한편, 이와 같은 면적의 임계적 의의를 만족하는 한, 형상은 원형으로 제한되는 것이 아니며, 위 면적범위에 대응되는 다각형, 타원형이 될 수도 있다.When the oil absorption point is circular, the area of the unit oil absorption point is preferably in the range of 4π square millimeter to 16π square millimeter. This means that the diameter of the oil absorption point is 4mm to 8mm. If the diameter of the oil absorption point is less than 4mm, that is, if the area of the oil absorption point is less than 4π square millimeter, loss due to workability and product defects occurs during production. In the case where the oil absorption point exceeds 8 mm, that is, when the area of the oil absorption point exceeds 16π square millimeters, the damage caused by the decrease in oil absorption is greater than the increase in the oil absorption rate. Therefore, the numerical range above the oil absorption point diameter has its critical significance at each limit value. On the other hand, as long as the critical significance of the area is satisfied, the shape is not limited to a circle, and may be a polygon or an ellipse corresponding to the area range.
특정 흡유점과 이에 인접하는 흡유점이 복수인 경우, 상기 특정 흡유점과 이에 인접하는 어느 하나의 흡유점의 거리와, 상기 특정 흡유점과 이에 인접하는 또 다른 하나의 흡유점의 거리간의 편차는 35% 이내인 것이 바람직하며, 흡유점간의 거리는 특정 흡유점과 이에 인접하는 각 흡유점의 중심간 거리를 측정한다. 이는 흡유점이 흡착포의 특정 위치에 국부적으로 쏠려서 생성되는 것을 방지하기 위함이다. 즉, 흡유점은 흡착포상에서 고르게 분산되는 것이 바람직하며, 상기와 같이 각 흠유점간 거리의 편차가 작은 경우라야 흡유속도 향상을 극대화할 수 있다. 만일, 흡유점이 국부적으로 쏠리는 경우, 쏠린 지점에는 흡유가 바르게 되겠지만, 그렇지 않은 지점에는 여전히 흡유속도가 느리게 되어 흡유점을 생성에 따른 실효성이 없다. When there is a plurality of specific oil absorption points and adjacent oil absorption points, a deviation between the distance between the specific oil absorption point and any one oil absorption point adjacent thereto and the distance between the specific oil absorption point and another oil absorption point adjacent thereto is 35 It is preferable to be within%, and the distance between oil absorption points measures the distance between the specific oil absorption point and the center of each oil absorption point adjacent thereto. This is to prevent the oil absorption point is generated by locally concentrated in a specific position of the adsorption cloth. That is, it is preferable that the oil absorption point is evenly distributed on the adsorption cloth, and the improvement of the oil absorption speed can be maximized only when the variation in the distance between the defect points is small as described above. If the oil absorption point is locally localized, the oil absorption will be correct at the point where the oil absorption point is localized, but the oil absorption speed will still be slow at the point where the oil absorption point is not.
또한, 특정 흡유점과 이에 인접하는 어느 하나의 흡유점의 거리와, 상기 특정 흡유점과 이에 인접하는 흡착포의 모서리와의 거리 중 최소 거리의 편차는 35% 이내인 것이 바람직한데, 이 또한 특정 흡유점간의 거리를 고려할 때, 모서리와의 거리도 고려함으로써, 흡유점의 고른 분산을 구현할 수 있다.In addition, it is preferable that the deviation of the minimum distance between the distance between the specific oil absorption point and any one oil absorption point adjacent thereto and the distance between the specific oil absorption point and the edge of the suction cloth adjacent thereto is less than 35%. When considering the distance between the points, by considering the distance to the edge, even distribution of the oil absorption point can be implemented.
도 9에 따르면, 흡착포(100)의 기준면적을 1 제곱미터로 하였을 때, 형성된 흡유점(145)의 면적이 51제곱센티미터가 될 때까지는 흡유점(145) 면적이 증가할수록 유분의 흡유량은 다소 저하되는 반면 흡유속도는 빠르게 증가함을 알 수 있다. 그러나, 흡유점(145)의 면적이 51제곱센티미터를 초과하는 경우에는 흡유속도의 증가는 미미하며, 대신 흡유량은 계속하여 감소하였다. 따라서, 본 발명에서 설정되는 흡유점(145)의 면적은 51제곱센티미터 이하인 것이 바람직하다고 할 수 있다. According to FIG. 9, when the reference area of the adsorption cloth 100 is 1 square meter, the oil absorption amount of oil decreases slightly as the area of the oil absorption point 145 increases until the area of the oil absorption point 145 formed is 51 square centimeters. On the other hand, it can be seen that the oil absorption rate increases rapidly. However, when the area of the oil absorption point 145 exceeds 51 square centimeters, the increase in the oil absorption rate is insignificant, and the oil absorption amount continues to decrease instead. Therefore, it can be said that the area of the oil absorption point 145 set by this invention is preferably 51 square centimeters or less.
한편, 흡착포는 유분 종류에 따라서도 비교대상과 흡수량에 차이가 있는데 이하, 표를 참조하여 설명하도록 한다.On the other hand, there is a difference between the absorption target and the absorption amount according to the type of oil, but will be described below with reference to the table.
오일종류Oil types 벙커유Bunker oil 펌프오일Pump oil 콩기름Soybean oil 유압유Hydraulic oil 절삭유Coolant 실리콘오일Silicone oil
실시예흡유량(A)EXAMPLES Absorption amount (A) 27.127.1 30.430.4 27.327.3 25.625.6 30.930.9 30.730.7
비교대상흡유량(B)Comparative oil absorption (B) 12.612.6 1919 20.820.8 18.718.7 21.621.6 22.622.6
증가량(A-B)Increase amount (A-B) 14.514.5 11.411.4 6.56.5 6.96.9 9.39.3 8.18.1
증가율(%)% Increase 115115 6060 3131 3737 4343 3636
여기서, 단위표시는 실시예 흡유량, 비교대상 흡유량, 증가량의 경우 각각g/g이며, 증가율은 [{(A-B)/B}×100]%로 계산된다.Here, the unit display is g / g in the case of Example oil absorption, comparative oil absorption amount, and increase amount, respectively, and the increase rate is calculated as [{(A-B) / B} × 100]%.
상기 실험 조건은 아래와 같다.The experimental conditions are as follows.
시편 크기 : 10 × 10cm2 Specimen size: 10 × 10 cm 2
실험 방법Experiment method
1. 유면에 띄워 5분간 정치1. 5 minutes politics
2. 10 내지는 17mm 눈금 간격으로 짠 철망 위에 5분간 정치2. Settling on a wire mesh woven at 10 to 17 mm grid intervals for 5 minutes
3. 중량을 측정하여 시편의 무게 1g당 흡유량을 산출3. Measure the weight to calculate the oil absorption per 1g of the specimen
흡착포에 대하여 다양한 유분을 상대로 실험을 한 결과, 유분 흡수량이 적게는 유압류의 경우 25.6g이고, 많게는 절삭유의 경우 30.7g까지 흡수하였다. As a result of experimenting with various oils on the adsorption cloth, the oil absorption amount was 25.6g for the hydraulic flow and up to 30.7g for the cutting oil.
반면, 비교대상의 흡착부는 상대적으로 적은량을 흡유하였으며, 유분 흡수량이 적은 것은 벙커유로서 12.6g이고, 가장 많은 흡유 대상인 실리콘 오일도 흡유량이 22.6g에 불과하였다. 이로부터, 다양한 유분에 대해서 많게는 115% 적게는 31% 이상의 기름 제거율의 증가를 보이는 결과를 확인하였으며, 본 발명의 흡착포가 비교대상에 비해 월등한 성능을 보임을 알 수 있다. On the other hand, the adsorption part of the comparison target absorbed a relatively small amount, and the oil absorption amount was 12.6 g as bunker oil, and the oil absorption amount of the most oil absorption target was only 22.6 g. From this, it was confirmed that the result of increasing the oil removal rate as much as 115% less than 31% for the various oils, it can be seen that the adsorption cloth of the present invention shows superior performance compared to the comparative object.
그리고 본 발명은 유분의 흡수량과 더불어, 내구성이 양호하여 다양한 조건에서도, 발수력이 지속되는데, 이하 표를 참조하여 설명하도록 한다.In addition, the present invention, along with the amount of oil absorption, the durability is good, even under various conditions, the water repellency is continued, it will be described with reference to the following table.
pH 2 pH 2 시간(min)Time (min) 00 3030 6060
실시예(o)Example ( o ) 162.9162.9 163.9163.9 160.8160.8
비교대상(o)Comparison target ( o ) 151.6151.6 144.7144.7 142.5142.5
pH 12 pH 12 시간(min)Time (min) 00 3030 6060
실시예(o)Example ( o ) 162.9162.9 161.1161.1 161.7161.7
비교대상(o)Comparison target ( o ) 151.6151.6 144.8144.8 141.8141.8
상기 표 2와 3은 본 발명의 흡착포와 비교대상을 각각 pH 2(강산성)와 pH 12(강염기성)물에 띄워 시간별 물접촉각을 실험한 측정값이다.Tables 2 and 3 are measured values of the water contact angle for each time by floating the adsorption cloth and the comparative object of the present invention in pH 2 (strongly acidic) and pH 12 (strongly basic) water, respectively.
먼저, pH 2의 물에 띄우는 실험에서, 흡착포를 최초 물에 띄울 때의 물접촉각은 162.9°, 30분 이후에는 163.9°그리고 한 시간이 지난 뒤에는 160.8°를 유지하는 것으로 측정되었다. First, in the experiment of floating water at pH 2, the water contact angle when the adsorption cloth was first floated was measured to be 162.9 °, 163.9 ° after 30 minutes, and 160.8 ° after one hour.
반면, 비교대상은 최초 물에 띄울 때의 물접촉각이 151.6°로서 흡착포 대비 11.3°낮은 각도로 띄워지며, 시간이 갈수록 30분 위에는 144.7°, 한 시간 뒤에는 142.5로서 최소 물에 띄워질 때보다 약 9.1° 낮아지는 것으로 측정되었다.On the other hand, the comparison object is 151.6 ° when the water is initially floated, which is 11.3 ° lower than the absorbent cloth, and it is 144.7 ° over 30 minutes and 142.5 after an hour, which is 9.1 than the minimum water float. It was measured to lower.
pH 12의 물에 띄우는 실험에서는,In experiments that float in water at pH 12,
흡착포는 최초 물에 띄울 때의 물접촉각은 162.9°, 30분 이후에는 161.1° 그리고 한 시간 지난 뒤에는 161.7°를 유지하는 것으로 측정되었다. The adsorption bubble was measured to maintain a water contact angle of 162.9 ° when initially floated in water, 161.1 ° after 30 minutes, and 161.7 ° after one hour.
반면, 비교대상은 최초 물에 띄울 때의 물접촉각이 151.6°로서 흡착포대비 11.3°낮은 각도로 띄워지며, 시간이 갈수록 144.8°, 한 시간 뒤에는 141.8°로서 물에 최초 띄워질 때보다 약 9.8°낮아지는 것으로 측정되었다. On the other hand, the comparison object is 151.6 ° when the water is initially floated, which is 11.3 ° lower than the absorbent cloth, and it is 144.8 ° with time and 141.8 ° after an hour, which is about 9.8 ° lower than when it is initially floated. It was measured to lose.
이상과 같이 본 발명의 흡착포는 산성은 물론, 염기성 물에서도 양호한 발수력을 지속시키는 것이 가능하였으나, 비교대상은 최초 물에 띄워질 때부터 물접촉각이 낮을 뿐만 아니라, 시간이 갈수록 물 접촉각이 점차 낮아지는 것으로 보아 발수력이 시간에 따라 저하됨을 알 수 있는 것이다. 즉, 비교대상은 흡착포 대비 발수력이 낮을 뿐만 아니라, 특히, 비교대상은 시간이 갈수록 발수력이 크게 낮아지는 것으로 측정된 바, 일정시간이 지난 후에는 발수력 저하로 인하여 수중으로 침강될 수 있음을 예측할 수 있다.As described above, the adsorption cloth of the present invention was able to maintain good water repellency even in basic water as well as acidic acid, but the comparative object has a low water contact angle from the time it is first floated, and gradually lowers the water contact angle with time. It can be seen that the water repellency decreases with time. That is, the comparison target is not only low in water repellency compared to the adsorption cloth, in particular, the comparison target is measured that the water repellency is significantly lower with time, after a certain time may be settled underwater due to the water repellency decrease Can be predicted.
이상 실험을 통해 살펴본 결과, 본 발명의 흡착포는 물의 침투를 방지하면서 유분에 대한 흡유량이 비교대상보다 월등할 뿐만 아니라, 발수코팅을 통하여 수상에서 양호한 물접촉각을 유지하고, 따라서 수상에서 양호한 부유상태를 유지하여 침강을 예방하고, 궁극적으로 수중오염을 예방하는 것이 가능하다.As a result of the above experiments, the adsorption cloth of the present invention prevents the penetration of water, while the oil absorption to the oil is superior to that of the comparative object, and maintains a good water contact angle in the water phase through the water-repellent coating, and thus has a good floating state It is possible to prevent sedimentation and ultimately to prevent water pollution.
이상에서 실시예를 들어 본 발명을 더욱 상세하게 설명하였으나, 본 발명은 반드시 이러한 실시예로 국한되는 것이 아니고 본 발명의 기술사상을 벗어나지 않는 범위 내에서 다양하게 변형실시될 수 있다. 따라서, 본 발명에 개시된 실시예는 본 발명의 기술 사상을 한정하기 위한 것이 아니라 설명하기 위한 것이고, 이러한 실시예에 의하여 본 발명의 기술 사상의 범위가 안정되는 것은 아니다. 본 발명의 보호 범위는 아래의 청구범위에 의하여 해석되어야 하며, 그와 동등한 범위 내에 있는 모든 기술 사상은 본 발명의 권리범위에 포함되는 것으로 해석되어야 할 것이다.Although the present invention has been described in more detail with reference to the examples, the present invention is not necessarily limited to these embodiments, and various modifications can be made without departing from the spirit of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not stabilized by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

Claims (7)

  1. 유분을 흡수하여 보유하기 위한 흡착부; 및Adsorption unit for absorbing and retaining oil; And
    상기 흡착부의 적어도 일면에 상기 흡착부 전면을 커버하도록 부착되며, 표면 및 이면 중 적어도 한 부분에 발수제가 코팅되는 커버부;를 포함하며,And a cover part attached to at least one surface of the adsorption part to cover the front surface of the adsorption part, and a water repellent coated on at least one of a surface and a rear surface thereof.
    상기 커버부가 상기 흡착부의 일면에만 형성되는 경우에는 커버부가 형성되지 않은 흡착부의 다른 일면에도 발수제가 코팅되고, When the cover part is formed on only one surface of the adsorption part, the water repellent is coated on the other surface of the adsorption part in which the cover part is not formed.
    상기 발수제에는 상기 흡착부 또는 커버부에 발수제가 고정되도록 결합제가 혼합되되, 상기 결합제의 양은 발수제 100부피%를 기준으로 0 초과 3 부피% 이하인 것을 특징으로 하는 유분 흡착포.The water repellent is mixed with a binder so that the water repellent is fixed to the adsorption portion or the cover portion, the amount of the binder is greater than 0 based on 100% by volume of water repellent, characterized in that the oil adsorption cloth.
  2. 제1항에 있어서,The method of claim 1,
    상기 유분 흡착포에는 커버와 흡착부가 물리적으로 결합되도록 흡유점이 형성되는 것을 특징으로 하는 유분 흡착포.The oil adsorption fabric is characterized in that the oil absorption point is formed so that the cover and the adsorption unit is physically combined.
  3. 제2항에 있어서,The method of claim 2,
    상기 흡유점은 융착방식에 의하여 흡착포에 국부적으로 형성되는 것을 특징으로 하는 유분 흡착포.The oil absorption point is oil adsorbent fabric, characterized in that formed locally on the adsorption cloth by the fusion method.
  4. 제2항에 있어서,The method of claim 2,
    상기 흡유점은, 흡착포의 기준면적을 1제곱미터로 하였을 때, 상기 흡착포에 12제곱센티미터 내지 51제곱센티미터의 면적을 갖도록 형성되며, 상기 흡유점이 원형인 경우, 단위 흡유점의 면적은 4π 내지 16π의 범위인 것을 특징으로 하는 유분 흡착포.The oil absorption point is formed so as to have an area of 12 square centimeters to 51 square centimeters in the adsorption cloth when the reference area of the adsorption cloth is 1 square meter. Oil adsorbent fabric, characterized in that the range.
  5. 제2항에 있어서,The method of claim 2,
    특정 흡유점과 이에 인접하는 흡유점이 복수개인 경우, 상기 특정 흡유점과 여기에 인접하는 하나의 흡유점의 거리와, 상기 특정 흡유점과 여기에 인접하는 다른 하나의 흡유점의 거리간의 편차는 35%를 초과하지 않는 것을 특징으로 하는 유분 흡착포.When there is a plurality of specific oil absorption points and adjacent oil absorption points, a deviation between the distance between the specific oil absorption point and one oil absorption point adjacent thereto and the distance between the specific oil absorption point and another oil absorption point adjacent thereto is 35 Oil adsorbent fabric, characterized in that not exceeding%.
  6. 제2항에 있어서,The method of claim 2,
    특정 흡유점과 이에 인접하는 어느 하나의 흡유점의 거리와, 상기 특정 흡유점과 이에 인접하는 흡착포 모서리의 거리 중 최소 거리간의 편차는 35% 이내인 것을 특징으로 하는 유분 흡착포.The oil absorption cloth, characterized in that the deviation between the distance between the specific oil absorption point and any one of the adjacent oil absorption point, and the minimum distance of the distance of the specific oil absorption point and the edge of the adsorbent cloth adjacent thereto.
  7. 제1항에 있어서,The method of claim 1,
    상기 발수제는 산화물 분말에 실리콘 오일, 폴리디메틸실록산, 폴리비닐실록산, 폴리페닐메틸실록산 중에서 선택되는 적어도 하나가 코팅된 형태인 것을 특징으로 하는 유분 흡착을 위한 유분 흡착포.The water repellent is oil adsorbent fabric for adsorbing oil, characterized in that the oxide powder is coated with at least one selected from silicon oil, polydimethylsiloxane, polyvinylsiloxane, polyphenylmethylsiloxane.
PCT/KR2018/004194 2017-04-28 2018-04-10 Oil adsorbing fabric and method for manufacturing same WO2018199510A2 (en)

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