KR102540967B1 - Oil-removing adsorption fabric with improved adsorption and manufacturing method therefor - Google Patents

Abstract

The present invention is a composite fabric containing hydrophobic polyester fibers and polypropylene fibers to adsorb and remove microoil, microplastic, and water-insoluble organic solvents present in sea coasts, dams, reservoirs, and water source reservoirs. It relates to a modified oil-removing absorbent fabric with improved adsorption and a method for manufacturing the same, and more specifically, to a composite fabric composed of polyester fibers having a capillary fiber structure and polypropylene fibers that do not sink in water and do not absorb moisture It is made of fabric with increased micropores and specific surface area between lattice pores and fibers, and it is wrapped in a water source reservoir to selectively adsorb and adsorb microoil, microplastics, and water-insoluble organic solvents present in the water surface regardless of the gas phase or water surface state. It is an economical and environmentally friendly invention that does not sink in water even in one state.

Description

Oil-removing adsorption fabric with improved adsorption and manufacturing method therefor}

The present invention relates to an oil-removing absorbent fabric with improved adsorption properties and a method for manufacturing the same, and more particularly, to a polyester filament DTY (Draw Textured Yarn) or ATY (Air Textured Yarn) processing yarn and polypropylene flat yarn or multifilament yarn. A composite fabric is manufactured, and the fabricated composite fabric does not sink in water and has a larger specific surface area and increased capillary function, thereby exhibiting an excellent adsorption effect.

Recently, as the use of various oils and organic solvents rapidly increases with the improvement of living standards and the advancement of industry, water pollution as well as destruction of the environmental ecosystem is serious. In general, oil and organic solvents are hydrophobic and have low surface tension, so they diffuse very quickly when spilled into water.

As a method of removing oil, a method of spraying an oil emulsifier, a method of treating with an oil-removing absorbent cloth, a method of installing an oil prevention film, and the like are used. The chemical treatment method may cause secondary contamination, etc., and has a problem of causing serious damage to the human body.

The simplest physical treatment method is to use an oil absorbent cloth or an oil absorbent pad. This is the most used because it can absorb and remove oil leaked on the surface of the water.

General non-woven fabrics have low retention of oil absorbed due to their small contact specific surface area and capillary capacity, which are one of the adsorption performance indicators. There is a problem of falling to the surface of the water, and there is a problem of not sinking in water when a lot of water is included with oil.

Therefore, in order to improve water quality and protect the environment, oil or organic solvents present in water can be selectively and efficiently adsorbed and removed from water. There is an urgent need for the development of absorbent fabrics for removing oil.

However, an oil adsorbent that does not sink in water and adsorbs micro-oil, micro-plastic, and water-insoluble organic solvent present in water is still unknown.

In addition, there is a growing awareness that an advanced water treatment process for removing trace amounts of harmful organic substances that are difficult to be removed by ordinary water treatment processes such as filtration or precipitation is essential rather than optional.

KR Registration No. 10-1413890 (2014.06.24.) KR Publication No. 10-2017-0095103 (2017.08.22.)

The present invention has been devised to solve the above problems of the prior art, so that micro-oil, micro-plastic, water-insoluble organic solvent, etc. on the water are trapped in the pores of the adsorbent fabric, so that it does not harm the environment and water source. By removing fine oil and other foreign substances present, it provides a part of the advanced water treatment process to keep the water source clear and clean, while reducing the manufacturing cost while solving the problems of the preceding non-woven fabric filter. More economical It was completed as a technical task with an emphasis on providing an environmentally friendly and environmentally friendly oil-removing absorbent fabric with improved adsorption and a manufacturing method thereof.

Accordingly, the present invention includes the steps of weaving a fabric in a plain weave or mesh structure by weaving polyester filament DTY (Draw Textured Yarn) or ATY (Air Textured Yarn) processing yarn and polypropylene flat knitting yarn or multifilament yarn; After forming fine hair on the surface of the woven fabric, pitching and brushing the surface of the woven fabric with a needle cloth to generate fine hairs; Desizing and scouring the fabric that has gone through the pitch and brushing steps at 40°C-100°C using NaOH or Na2CO3 and a surfactant to remove oil or foreign substances attached to the fabric, followed by washing with water; Sanitizing the refined fabric by treating it with an organic acid to neutralize residual alkalinity to neutralize the pH of the fabric; Oil-removing adsorbent fabric with improved adsorption properties, which is made of 5% to 55% by weight of polyester fiber and 95% to 45% by weight of polypropylene fiber, and has a void area of 1 to 25 mm2, which is prepared by including a is a technical feature.

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According to the oil-removing adsorbent fabric and its manufacturing method with improved adsorption properties of the present invention, by constructing a fabric that has lattice-like pores, capillary fibers and a larger specific surface area that cannot be found in the prior art, and does not sink in water, It can selectively and efficiently adsorb micro-oil, micro-plastic, water-insoluble organic solvent, etc. present in coastal seas, lakes, and reservoirs of water sources from water to fill the capillary adsorption space. It can be widely applied in the climate or environment, can be used as an oil adsorption material that secures economic feasibility and environmental friendliness, and adsorbs and removes water-insoluble micro-suspended substances present in reservoirs of water sources, in the process of purifying tap water cleanly and cleanly. It is a useful invention that can be used as a material that secures economic feasibility and environmental friendliness because it can reduce enormous costs.

In the present invention, a composite fabric is manufactured using polyester filament DTY (Draw Textured Yarn) or ATY (Air Textured Yarn) processing yarn and polypropylene flat knitting yarn or multifilament yarn, and the manufactured composite fabric does not sink in water and has a higher ratio. Provided is an oil-removing absorbent fabric with improved adsorption that can exhibit excellent adsorption effect due to increased surface area and capillary function and a method for manufacturing the same.

Hereinafter, a preferred configuration and operation of the present invention for achieving the above object will be described with reference to the accompanying drawings.

① Step of weaving

Polyester Weave a filament DTY (Draw Textured Yarn) or ATY (Air Textured Yarn) processing yarn and polypropylene flat knitting yarn or multifilament yarn to weave a fabric in a plain weave or mesh structure.

At this time, the loom that can be used for weaving the fabric may be an air-jet loom, a shuttle loom, a water-jet loom, or a rapier loom. Using DTY processing yarn and polypropylene 200D DTY processing yarn, the weight ratio of polyester:polypropylene fiber was designed at a ratio of 9:95, and after sizing, it was woven on a water jet loom in plain weave with a void of 2.0 mm.

② Pitch and brushing

After forming fine wool on the surface of the woven fabric by PEACH processing, the surface of the fabric is scratched with a needle cloth to make fine hairs, and shearing to make the size of the wool constant, so that the fine fibers and specific surface area are greatly increased. Adsorbent fabric to produce

③ Refining step

De-sizing and refining (pre- After performing scouring), wash with water.

④ Step of sanitizing

The refined fabric is treated with an organic acid to neutralize the remaining alkalinity to form a neutral pH of the fabric, so that it can be used as a water supply source.

At this time, it is preferable to use an organic acid used in food processing as the organic acid, and citric acid or malic acid may be used if necessary.

In the absorbent fabric manufactured through these steps, the absorbent fabric contains 5% to 55% by weight of polyester fibers and 95% to 45% by weight of polypropylene fibers.

Experiment

go. adsorption capacity

Comparison of the absorbent fabric manufactured by the present invention and the commercially available absorbent fabric

Automobile engine oil was used as the oil. (Add 0.5g of engine oil to 2L of water, mix and let stand for 5 minutes.)

① Float a 10 * 10 cm test piece in the above mixture of oil at 20 ° C.

② Let stand for 5 minutes.

③ After leaving it on the net for 5 minutes, measure its weight.

④ Measure the oil absorption rate per 1g of the weight of the test piece.

⑤ Each test is conducted three times and the average value is applied.

⑥ Oil absorption rate (g/g) = (Sample weight after immersion - Sample weight before immersion) / Sample weight before immersion

3) Test results Weight before immersion 0.358 0.384 0.403 0.421 note weight after immersion 0.372 0.397 0.419 0.438 adsorption capacity 0.039 0.033 0.039 0.040 fabric settling state floating underwater floating underwater floating underwater floating underwater

2. Prior art

1) Sample: Polyester 50D plain weave, engine oil

2) Photo of fabric in adsorption state

3) Test results Weight before immersion 0.166 0.179 0.191 0.191 note weight after immersion 0.168 0.180 0.193 0.192 adsorption capacity 0.012 0.005 0.010 0.010 fabric settling state settling in water settling in water settling in water settling in water

(B) Adsorption capacity measurement result

As shown in the table above, the absorbent fabric of the present invention was found to have a significantly higher adsorption amount than the conventional nonwoven fabric, and in order to test the drop (release) of engine oil adsorbed on the absorbent fabric of the present invention and the conventional nonwoven fabric, the absorbent fabric As a result of checking after a certain period of time had elapsed in a state where the nonwoven fabric and the nonwoven fabric were separated from the ground by a certain distance, it was found that the absorbent fabric of the present invention did not fall, whereas the conventional nonwoven fabric easily fell.

In other words, the absorbent fabric of the present invention not only has a superior oil adsorption amount, but also maintains a water contact angle in the water phase, maintains a good floating state, does not sink in water, and ultimately absorbs and removes oil suspended in water. can be done effectively.

Claims (3)

delete delete Weaving a fabric in a plain weave or mesh structure by weaving polyester filament DTY (Draw Textured Yarn) or ATY (Air Textured Yarn) processing yarn and polypropylene flat knitting yarn or multifilament yarn; After forming fine hairs on the surface of the woven fabric, pitching and brushing the surface of the woven fabric with a needle cloth to generate fine hairs; Desizing and scouring the fabric that has gone through the pitch and brushing steps at 40°C-100°C using NaOH or Na2CO3 and a surfactant to remove oil or foreign substances attached to the fabric, followed by washing with water; Sanitizing the refined fabric by treating it with an organic acid to neutralize residual alkalinity to neutralize the pH of the fabric; It is manufactured consisting of,
5% to 55% by weight of polyester fibers and 95% to 45% by weight of polypropylene fibers,
An oil-removing absorbent fabric with improved adsorption, characterized in that the area of voids is 1 to 25 mm2.