• Proceedings of the Korean Society of Dyers and Finishers Conference
• /
• 2012.03a
• /
• pp.117-117
• /
• 2012

Dyeing and fastness properties of 800nm sea-Island type PET nanofilament fabrics have been investigated. The dye uptake of nanofilament commended at lower temperatures and showed faster rate of dye uptake. The build up and wet fastness propertied of disperse dye on nanofilament were relatively poor since the more dye was needed to achieve a given depth of shade due to the large surface area.

• Journal of the Korea Organic Resources Recycling Association
• /
• v.16 no.1
• /
• pp.70-78
• /
• 2008

In this study, the composition and physico-chemical characteristics of school waste which is located in B area, kyunggi-do was investigated. It is necessary to measure the characteristics of school waste to build the data-base for resource and recycling of waste. This school waste was composed of 12.25% of food wastes, 56.26% of papers, 9.26% of plastics&vinyls, 1.52% of textiles, 3.70% of wood, 0.11% of rubbers&leathers and others, respectively. Most of school wastes are mainly composed of paper and plastic waste and composition of combustible waste was about as 90%. From 3-components analysis, contents of moisture, combustible component, and ash was 5.72%, 88.29% and 5.98%, respectively. Moisture content was higher in Agricultural Dwelling school area compare to the urban dwelling school area. The chemical element of the school waste has the high order of carbon, oxygen, hydrogen on the dry basis of wastes and the low heating value of the MSW which is measured by calorimeter is shown as 3720.44kcal/kg.

• Journal of the Korean Society for Marine Environment & Energy
• /
• v.3 no.4
• /
• pp.91-98
• /
• 2000

The present study is the first attempt involving quantification of the different types of debris found on the seabed of Chinhae Bay in the South Sea of Korea. Eleven cruises were undertaken to collect marine debris samples by bottom trawling from February in 1998 to January in 1999. The tows were conducted over a period of 60-90 min, and eight types of debris were counted: plastic, fishing gear, metallic objects, wood, rubber or leather, glass, textile and the others. Results are obtained based on the number and weight of the objects classified as per eight categories and station for a trawling period. The results of this study are that the number and weight of debris found per unit of swept area (1 hectare) were surveyed as 27.8(1,612 in total) and 3,130 g(193,820 g in total), and plastic and fishing gear have the most composition of marine debris by number, on the other hand, metallic objects and fishing gear have the most composition of marine debris by weight.

• Journal of Korean Society on Water Environment
• /
• v.23 no.5
• /
• pp.740-747
• /
• 2007

The advanced wastewater treatment plant of leather industry was selected to evaluated with its effluent water quality and statistical characteristics. Most of pollutants removal efficiencies were over 90% as well. And 95% reliability of effluent concentration were 106.8 mg/L of $COD_{mn}$, 72.04 mg/L of TN. However Effluent quality of TN exceeds the regulated limit. The range of coefficient of variation (CV) were between 0.18 and 2.49. Also, coefficient of reliability (COR) were between $0.03(BOD_5){\sim}0.63(COD_{mn})$ and 0.43 in terms of T-N, $Z_{l-a}$(Normalized Percentiles) value were 55.7 and 2.25 in terms of $BOD_5$ and T-N as shown in the following table.

• Journal of the Korean Applied Science and Technology
• /
• v.31 no.2
• /
• pp.296-304
• /
• 2014

For this research, prepared polyurethane dispersion of hard segment type and polyethylene emulsion wax. Use these resin, this article has been analyzed about mechanical properties variation by increasing amount of polyethylene emulsion wax on Lam skin leather and dried film. According to measure data for solvent resistance, PUD had good property. As known in the results, increase of polyethylene wax constant did not influence to big variation of hybrid resin properties. As test of tensile strength, PUD had good tensile characteristic($1.235kg_f/mm^2$) and PUD-EW4 had lowest tensile characteristic($1.022kg_f/mm^2$). As same as tensile characteristic, abrasion test determined PUD(52.225 mg.loss) had highest properties. In elongation case, PUD showed 698 % modulus which was best properties in this experiment.

• Journal of Korean Library and Information Science Society
• /
• v.43 no.3
• /
• pp.101-120
• /
• 2012

This study investigated general problems concerning the clothing and textiles field in the KDC 5th edition based comparative analysis academic characteristics and classification system, and suggested on some ideas for the improvements of them. Results of the study is summarized as follows. First, the classification system of the clothing and textiles field is generally divided by costume, dyeing engineering, leather & fur processing, textiles and textile industries, manufacturing clothes, management of clothing, and textile arts. Second, I proposed improvements based on analyzing problems of KDC 5th to the clothing and textiles field from the collection database at the National Library of Korea. Third, basically improvements of KDC system was based on the knowledge of the clothing and textiles field. I tried to maintain as the KDC existing classification system was to retain as much as possible, and to move between items was minimal.

• The Korean Journal of Mycology
• /
• v.36 no.2
• /
• pp.116-122
• /
• 2008

Fungal floras were investigated for the lysimeter soil treated with municipal sewage sludge (MSS), pig manure compost (PMC), industrial sewage sludge (ISS), leather processing sludge (LS), and alcohol fermentation processing sludge (FS). Fungal populations were higher in the FS, ISS, LS, or MSS-treated soil than in the chemical fertilizer-treated soil. Isolated fungi from the sewage sludge were identified as Penicillium spp., Gliocladium spp., Acremonium spp., Trichoderma spp., Aspergillus spp., Blastomyces spp., and Phoma spp.

• Polymer(Korea)
• /
• v.31 no.3
• /
• pp.177-183
• /
• 2007

In this study, nano-sized poly(vinyl acetate) (PVAc) particles containing lavender oil as a core material were prepared by using emulsification-diffusion method. Effects of experimental parameters on the characteristics and the release behavior were examined with a field emission- scanning electron microscope, an electrophoretic light scattering spectrophotometer, a visible spectrophotometer and a high performance liquid chromatography The resulting aromatic particles could be prepared in nano-sized globular shapes with the mean particle size of 224 nm by controlling the experimental conditions. From the evaluation of release properties of aromatic PVAc nanoparticles with or without PVA coating, it was found that the aromatic particles coated with PVA show more sustaining and stable release behaviors. Our research on aromatic PVAc nanoparticles could be applied for durable fragrant finishing for textiles, leather products and so on.

• Fire Science and Engineering
• /
• v.33 no.4
• /
• pp.9-15
• /
• 2019

The flash points of DMF based organic solvent mixtures used in the synthetic leather manufacturing process were measured. The test group was composed of seven types of solvent mixtures, which included DMF, toluene, and MEK. Each flash point was tested according to the international standard test methods of KS M 2010. The flash points were then predicted using some prediction models and compared with the measured data. From the analysis results, the binary mixtures with a mole ratio of less than approximately 0.7 showed that the measured values were under 25 ℃. This showed that the expectation for the flammable risk lowering effects due to the mixing of high flash point materials was reduced. In addition, the predicted values were evaluated using the average absolute deviation (A.A.D). The results showed that the Le Chatelier's models had an "A.A.D" of 1.95 ℃ and were the closest to the measured values.

• Journal of Adhesion and Interface
• /
• v.19 no.1
• /
• pp.5-12
• /
• 2018

The purpose of this study is to evaluate the adhesive properties of polyurethane mixed aqueous dispersions by omitting the primer, dealing with the preparation of skins for synthetic leather with excellent adhesion by omitting the pre-treatment process. The two-component mixed polyurethane water dispersion was prepared by synthesizing an ester-based polyurethane resin (PU-T) and a carbonate-based polyurethane resin (PU-C) to obtain the final resin. As a result of measuring the peel strength of the adhesive specimens omitting the pre-treatment agent, it was confirmed that the state adhesive strength (ethylene vinyl acetate (middle): $4.2kg_f/cm$ and rubber (outsole): $4.4kg_f/cm$) there was. This makes it possible to omit the pre-treatment process which has been indispensably used in the shoe manufacturing process, thereby reducing the process time and reducing the amount of volatile organic compounds (VOCs) generated in the pre-treatment product, resulting in environmentally advantageous.