• 제목, 요약, 키워드: absorbency

검색결과 107건 처리시간 0.044초

도공층 조성 및 구조의 잉크흡수성에 대한 영향 (The influences of coating components and structures on ink absorbency)

  • 곽상효;김진현
    • 한국펄프종이공학회:학술대회논문집
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    • pp.7-16
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    • 1999
  • The aim of this research was to evaluate the influences of coating components and structures on ink absorbency. The ink absorbency was measured as porosity, K&N ink absorption, gloss and ink set-off. In order to obtain the relationship between the coating structure and the ink absorbency, the binder level was adjusted and two types of pigments were examined. One of the pigments was known to make the porous coating structure and the other one had strong ink affinity. The effects of coating components were studied by applying six different types of latex and various additives . In this research, CLC(cylindrical laboratory coater) and Prufbau printability tester were used. It was found that the decreasing latex dosage and introducing porous pigment were effective solutions to increase ink absorbency. However, the ink absorbency could not be improved by applying the fine pigment even though it had strong ink affinity. Among the characters of the latex, particle size and surface tension were found to have the strong effect on ink absorbency. The ink absorbency increased with large particle size and low surface tension latex. The additives were varied and it was found that applying to the top coating was effective.

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유연제 사용에 따른 직물의 흡수성.유연성.대전성 변화에 관한 연구 (Effect of Fabric Softner on the Absorbency, Stiffness and Antistatic Properties of Fabrics.)

  • 김언아
    • 대한가정학회지
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    • v.31 no.2
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    • pp.189-203
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    • 1993
  • The objective of this study was to investigate the changes of the fabric absorbency, stiffness and antistatic property by using a fabric softner at laundering. The samples selected in this study were cotton and polyester fabrics. The cotton fabric was treated with 1/2 times(0.035%), 1 time(0.07%), 3 times(0.21%) and 10 times(0.7%) of the commercially suggested concentration (0.07%) of the fabric softner. And polyester fabric was done at 1 time(0.07%) of that. In order to examine the effect of the fabric by using a fabric softner, the abstraction of a surface active agent and quantitative analysis was performed by using a UV/VIS Spectroscopy and the correlations among the absorbency, stiffness and antistatic property was analyzed. The results obtained from this study were as follows; 1. In the cotton fabric, fabric softner gave the degradation of absorbency, and stiffness improvement was not shown by repeated fabric softner on the cotton fabric. 2. In the polyester fabric, the absorbency increased and the stiffness in creased very slightly. Specially, it is desirable to use fabric softner on the polyester due to improvement of antistatic property.

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멜트블로운 부직포 제조공정이 유흡착포의 특성에 미치는 영향 (Effect of Manufacturing Conditions on the Properties of Oil-absorbable Melt Blown Nonwoven)

  • 신현세;김로;유주환
    • 한국염색가공학회지
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    • v.21 no.6
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    • pp.22-28
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    • 2009
  • Oil-absorbable nonwovens were produced by melt-blown processing of polypropylene chips. The melt-blown processing conditions, such as air pressure, and gear pump speed, DCD. In this study, these three factors were chosen to produce samples. Experimental array and variance analysis of the design of experiment were used to increase the field repeatability and universality. The effect of the factors on oil absorption properties of melt-blown nonwoven fabric such as oil absorbency were evaluated. As a result, the fiber diameter decreased as gearpump speed decreased or air pressure increased. The oil absorbency increased as air pressure increased or gearpump speed decreased and with the DCD increasing the oil absorbency significantly increased.

시판 내의류소재의 수분특성 및 착용감에 관한 연구 (I) -시판 내의류 소재의 수분특성- (A Study on Moisture Related Properties and Human Sensations of Underwear (1) -A Study on Water and Water Vapor Transport characteristics of Underwear Fabrics-)

  • 이순원
    • 대한가정학회지
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    • v.26 no.4
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    • pp.1-13
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    • 1988
  • The purpose of this study is to investigate water and after vapor transport characteristics of underwear fabrics. Experimental materials were cotton woven fabric and cotton knitted fabric, nylon tricot (untreated and hydrophilic finished) and cotton/polyester/cotton triple layer. Cotton knitted fabric have three types of knit structure (interlock, rib, plain stitch) and knit with either 38's or 60's combed yarn. And cotton woven fabric have plain weave with 60's combed yarn. As experimental methods, vapor cup test, dynamic method, vertical wicking test and transplanar uptake test were used. The results are as follows. 1) In cotton specimens, the order of water vapor transpiration (wvt) was plain > rib > interlock in the same yarn diameter. The knit fabric of thinner yarn showed the better wvt among the same knit structure. 2) In cotton specimens, the order of water absorbency was interlock > rib > plain in the same yarn diameter. the knit fabric of thicker yarn showed the better absorbency among the same knit structure. 3) When knit fabric (60's plain) is compared with woven fabric 960's plain), knit fabric showed faster rate of wvt, more amount of uptake and slower rate of water uptake than woven fabric did. 4) When compared untreated nylon with hydrophilic finished nylon, hydrophilic finished nylon showed much more water absorbency than untreated nylon did, but showed same rate of wvt. 5) The water transport characteristics of triple layer underwear fabric showed that the thinner and the lighter one, the better wvt and absorbency did.

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멜트블로운 부직포의 흡유도와 흡유거동에 관한 연구 (A Study on Oil Absorption Rate and Oil Absorbency of Melt-blown Nonwoven)

  • 신현세;유주환;김로
    • 한국염색가공학회지
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    • v.22 no.3
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    • pp.257-263
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    • 2010
  • Oil-absorbable nonwovens were produced by meltblown processing of polypropylene chips. In this study, experimental array and variance analysis of the design of experiment were used to increase the field repeatability and universality. Oil absorbency was decreased, as oil absorbable nonwovens of packing density and gearpump speed were increased. Oil absorption rate was increased, as packing density was increased. Also the oil absorption rate increased with increasing gear-pump speed.

PRELIMINARY STUDIES ON NATURAL PLANT EXTRACTS AS SUNSCREEN AGENTS

  • Lee, K.T.;Kim, J.H.
    • 대한화장품학회지
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    • v.24 no.3
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    • pp.81-88
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    • 1998
  • The aim of this study is to evaluate several plant extracts with a view to developing UV sunscreen agents. In this study, 150 plant extracts were screened to elucidate their UV spectra using spectrophotometric method. Several plant extracts such as Phellodendron amurense, Morus alba, Rhododendron mucronulatum, Brassica alba have strong absorbency at UVA region (350nm), the suntanning wavelength. And Sophora flavescens, Caesalpinia sapper, Morus alba, Phellodendron amurense, showed absorption plateau value at UVB region (308nm), the erythema action wavelength. These extracts have a good absorbency property as synthetic filter and could be served as substitutes for synthetic UV sunscreen agents.

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면/키토산 혼방섬유의 펙티나제 처리시 계면활성제의 영향 (Effects of Surfactants on Pectinase Treatment of Cotton/Chitosan Blends)

  • 송유선;김혜림;송화순
    • 한국의류학회지
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    • v.33 no.12
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    • pp.1965-1970
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    • 2009
  • 본 연구는 면/키토산 혼방섬유에 펙티나제 처리시 계면활성제 전처리에 따른 영향을 알아보기 위해 감량률, 흡수속도, 염색성, 인장강도, 필링성 및 표면형태를 살펴보았다. 계면활성제 전처리 후 펙티나제 처리시 감량률은 약 1.5%였으며, 흡수속도는 계면활성제 전처리에 의해 크게 향상되었다. 인장강도와 필링성 측정결과 계면활성제 전처리에 따른 변화는 나타나지 않았다. 표면관찰 결과, LAS 전처리 후 펙티나제 처리한 면/키토산 혼방섬유의 표면에 계면활성제가 흡착됨을 확인하였다. 이상의 결과를 통해, 면/키토산 혼방섬유의 펙티나제 처리시 계면활성제 전처리는 면/키토산 혼방섬유의 흡수성과 염색성 향상에 효과적임을 확인하였다.

고흡수성 수지를 이용한 흡수성 실리콘의 특성 연구 (Study on the Characteristics of the Absorbency Silicone by Super Absorbent Polymers)

  • 차국찬;송점식;이석민
    • Elastomers and Composites
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    • v.47 no.2
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    • pp.141-147
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    • 2012
  • 실리콘 수지는 소수성이 강한 고분자이기 때문에 수분을 흡수하는 기능이 전혀 없다. 하지만 고흡수성 수지(Super Absorbent Polymer)를 첨가제로 사용하면 기존의 실리콘보다 월등한 흡수성을 갖게 된다. 본 연구에서는 무정형 형태의 입자 크기가 다른 아크릴계 고흡수성 수지 3가지를 선택하여 배합비를 설정하고 2액형 타입의 의료용 실리콘 소재에 적용해서 수분을 흡수하는 기능을 갖는 새로운 실리콘 소재를 개발하였다. 고흡수성 수지의 첨가에 의한 실리콘 수지의 제조시 입자 사이즈와 함량을 달리하면서 인장, 인열, 압축, 경도에 대한 기계적 물성 변화를 알아보았으며, 시간에 따른 실리콘 수지의 흡수성을 측정하였다. 또한 전자 현미경을 통해 고흡수성 수지의 입자형태와 실리콘 수지와의 분포도를 관찰하였다.

Changes in Absorbency and Drying Speed of a Quick-drying Knit Fabric by Repeated Laundering

  • Roh, Eui-Kyung;Kim, Eun-Ae
    • 한국의류학회지
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    • v.34 no.12
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    • pp.2062-2072
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    • 2010
  • This research evaluates the change of the water absorbency and drying speed of a quick-drying knit fabric by repeated laundering and laundering conditions and investigates the influence of laundering conditions on the functional properties of the knit fabric. Four factors of laundering conditions were studied: detergent, water hardness, water temperature, and frequency of rotation. Knit fabrics were washed for 25 laundering cycles in a drum-type washing machine with nine different laundering conditions derived from an orthogonal array. The properties of knit fabrics were measured with a drop absorption test, a strip test, and a drying time test. Relaxation shrinkage pointed to a change in the structural characteristics of the knit fabric. Wetting time was faster and wickability was greater in the knit fabrics that underwent 5 laundering cycles; in addition, there were no obvious changes in wetting time and wickability. The detergent was the most important factor in wetting time (40.4%) and wickability (60% or above). Water hardness, water temperature and RPM had less of an effect on wetting time and wickability. There were no significant differences between the levels of laundering conditions (except for detergent) on wetting time and wickability. Drying times with neutral and alkali were slower by repeated laundering; however, there was no obvious change in drying time. Hardness, water temperature and RPM had less of an impact on drying time.

추출조건에 따른 호두외피추출물의 특성 (Properties of Black Walnut hull Extracts with Extractive Conditions)

  • 김호정
    • 한국의류산업학회지
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    • v.8 no.4
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    • pp.465-470
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    • 2006
  • Walnut hull is a by-product from the Walnut tree, used as natural dyestuff from ancient times. This study was done to examine the effects of extractive conditions on the properties of walnut hull extracts for making efficient use of the walnut hull as a natural colorant. Aqueous extracts of walnut hull were prepared at various extractive concentration, temperature and time. Then they were characterized using UV-Vis. Spectrophotometer, FT-IR Spectrometer, Prep Liquid Chromatography, and Energy dispersive X-ray spectrometer. The aqueous extracts have two absorbency peaks of UV-Vis. Spectrum, shoulder type peak in the range of 270-280 nm and broad type band around 420 nm. Intensity of absorbency is increased with increase of extraction concentration and time. However, Boiling temperature extraction method showed the most efficiency of all. Intensity of absorbency is also affected by extraction pH. The Prep LC examined two kinds of isolated colorant with different molecular weight. FT-IR spectra of hull extracts showed an absorption band around $3400cm^{-1}$, the peaks at $1700-1600cm^{-1}$, which are characteristic of aromatic compounds with unsaturated ketone and benzene ring. It showed that the extraction contained some mineral ions, such as K, Ca, Si, Mg.