• 한국염색가공학회지
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• 제17권6호
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• pp.11-19
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• 2005

Textile dyeing with vat dyes has the highest color fastness although one and the same dye of all vat dyes cannot always satisfy every color fastness requirement. So we examined cotton, nylon 6, and polyester fabrics dyed with vat dyes. Cotton, nylon 6 and polyester fabrics were dyed with vat dyes such as C. I. Vat Blue 1, Blue 19, Black 9, Green 1, Orange 2, and Violet 1 containing sodium hydrosulfite and NaOH. Oxidation were carried out by a sodium peroxoborate after dyeing. The dyed materials were soaped at the boil after oxidation. Especially hydrolysis and overreduction for dyed polyester with vats dyes containing -NHCO- and -NH- groups such as C. I. Vat Blue 6, Black 25, Black 27, Red 10, and Green 3 occurred. It seems that these phenomena are due to a high dyeing temperature. Wash and rubbing fastness of nylon are higher than that of cotton and polyester. Light fastness of cotton is higher than that of polyester and nylon.

• 한국염색가공학회지
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• 제14권5호
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• pp.284-293
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• 2002

Nylon 6 and polyester taffeta fabrics are dyed in aqueous medium with vat dyes such as Indanthren Red FBB, Mikethren Blue ACE and Mikethren Blue HR varying the compositions of sodium hydrosulfite and NaOH. Also nylon UMF nonwoven and polyester UMF knitted fabrics are dyed with metal complex and disperse dyes as a reference, and the wash and rubbing fastnesses for these dyes are investigated. In vat dyeing of polyester and nylon taffeta, an optimum composition of sodium hydrosulfite/NaOH is existed at a range of 1∼2wt%/0.2wt%. A good build-up property for Mikethren Blue ACE on nylon 6 UMF nonwoven fabric is shown at high temperature. Vat dyeing of polyester with Mikethren Blue Ace shows a good color shade in a higher temperature, while dyeing with Mitsui Blue HR shows low temperatures. Vat dyes In dyeing of both nylon 6 UMF nonwoven and polyester UMF knitted fabrics have a better wash fastnesses compared with metal complex or disperse dyes.

• 한국재료학회지
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• 제33권4호
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• pp.115-123
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• 2023

In this paper, we report and discuss the semi-permanently hydrophilic (SPH) treatment of polyester fabric using plasma polymerization and oxidation based on atmospheric pressure dielectric barrier discharge (APDBD) technology. SiO_xC_y(-H) was coated on polyester fabric using Hexamethylcyclotrisiloxane (HMCTSO) as a precursor, and then plasma oxidation was performed to change the upper layer of the thin film to SiO₂-like. The degradation of hydrophilicity of the SPH polyester fabrics was evaluated by water contact angle (WCA) and wicking time after repeated washing. The surface morphology of the coated yarns was observed with scanning electron microscopy, and the presence of the coating layer was confirmed by measuring the Si peak using energy dispersive x-ray spectroscopy. The WCA of the SPH polyester fabric increased to 50 degrees after 30 washes, but it was still hydrophilic compared to the untreated fabric. The decrease in hydrophilicity of the SPH fabric was due to peeling of the SiO_xC_y(-H) thin film coated on polyester yarns.

• 한국농림기상학회지
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• 제2권3호
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• pp.87-94
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• 2000

지역과 육묘시기에 알맞은 기계이앙상자육묘 보온못자리의 피복자재와 못자리양식을 선정하기 위하여 PE 필름터널, 부직포터널. 부직포평상 못자리에 대한 상내미기상과 외부기상의 영향을 조사하였다. 1. 맑은 날 포차(vapor pressure deficit)는 낮에는 대기보다 부직포터널과 PE필름터널의 내부가 더 컸고, 흐리거나 비가 온 날은 낮에 부직포터널이 PE필름터널이나 외부보다 컸다. 2. 하루동안 지중열류량은 PE필름터널, 부직포평상, 부직포터널 순으로 대기중으로 방출하는 에너지보다 지중으로 흡수하는 에너지가 많았다. 흐리거나 비 온 날은 부직포평상과 부직포터널은 대기중으로 방출하는 에너지보다 지중으로 흡수되는 에너지가 더 컸으나, PE필름터널은 대기중으로 방출하는 에너지가 컸다. 3. 온도의 수직분포는 날씨에 관계없이 낮에는 역전 상태를 보였고, 일몰 이후부터 아침까지는 감률상태이었다. 4. 최고기온은 맑은 날 PE필름터널에서 외부기온보다 21.1$^{\circ}C$ 높은 47.2$^{\circ}C$이었고, 부직포터널은 10.9$^{\circ}C$ 높은 37.$0^{\circ}C$이었다. 흐린 날 외부기온보다 PE필름터널은 8.1$^{\circ}C$ 높고, 부직포터널에서는 4.$0^{\circ}C$높게 나타났다. 최저기온은 날씨에 관계없이 0~0.4$^{\circ}C$ 이내로 차이를 보이지 않았다. 일교차는 외부기온, 부직포 터널, 비닐터널 순서로 커지는 경향이었다. 5. 모의 소질은 부직포터널이 부직포평상 또는 PE필름터널보다 충실하였다.

• 한국섬유공학회:학술대회논문집
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• 한국섬유공학회 2002년도 봄 학술발표회 논문집
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• pp.371-371
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• 2002

Polyester Filament Flat Yam의 경우 현재 Dope Dyed Yarn을 주로 사용하고 있지만 색상발현의 한계성으로 오랫동안 일반염색을 위해 연구하였지만 해결하지 못하고 있는 실정이다. Polyester Filament Flat Yarn의 선염이 어려운 이유는 Winding에서 치밀한 사층구조로 염료가 침투할 수 없이 치밀하게 되어 있기 때문이다. 특히 사의 이러한 치밀한 사층구조 때문에 염액침투가 어렵고, Soft Winding을 하면 미끄러짐 현상으로 사층의 붕괴가 일어나기 쉽고, Pirn Winding의 경우는 사층의 안전한 유지는 가능하지만 사층의 밀도가 높아서 염액의 순환이 순조롭지 못한 단점이 있다. (중략)

• 분석과학
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• 제12권1호
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• pp.84-88
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• 1999

A method to analyze additives in a polyester resin has been studied by utilizing a centrifuge and a thin layer chromatography. Identification of the separated organic and inorganic compounds were carried out by spectrophotometers, such as NMR, UV-VIS, IR and XRD. For the polyester resin studied in this research contained organic and inorganic compounds which were found to be a dimer form of 2-phenylbenzoazole and an anatase form of $TiO_2$, respectively.

• 한국염색가공학회지
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• 제11권3호
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• pp.9-14
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• 1999

To investigate the effect of dyeing conditions, such as pick-up rate, dye concentration, time and temperature in thermosol dyeing on the dyeability of industrial polyester belt, dye uptake and rubbing fastness were measured. The dye uptake was increased with the increase of pick-up rate, dye concentration, dyeing time and temperature. The high rubbing fastness(class 5) for polyester belt dyed with Cibacet Blue F3R at the various conditions was obtained.

• KSBB Journal
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• 제26권3호
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• pp.193-198
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• 2011

Polyester was prepared through the esterification reaction between watsepaper liquefied by ethylene glycol and carboxylic acid. Liquefaction was carried out at the previously determined condition of 100 minutes, $160^{\circ}C$, and 3% sulfuric acid, and the hydroxyl value of the liquefied product was 411 mg KOH/g. In order to remove bubbles produced during the curing step, the method to introduce a slight nitrogen stream into reaction vessel and/or the method to preheat a polyester film at $85^{\circ}C$ before curing step were used alone or in combination. But if curing temperature was $130^{\circ}C$, simple method to cure a film for 5 hours at $130^{\circ}C$ without using both methods was found to be most effective. The polyesters prepared with various carboxylic acids showed significant different physical properties, and maleic acid was best among them. Also, the effect of reaction time and temperature, C/H (carboxyl group/hydroxyl group) ratio, and type of additive on the crosslinkage of polyester was investigated. Lithium hydroxide or citric acid as additive was used to enhance the crosslinkage of polyester and citric acid was proved to be much more effective than lithium hydroxide. The effect of reaction temperature on the crosslinkage was marginal, but the crosslinkage decreased above $130^{\circ}C$. The crosslinkage was 86% when the polyester was prepared at an optimum condition such as $130^{\circ}C$ and 15 minutes of reaction condition, 1.5 of C/H ratio, $130^{\circ}C$ and 5 hours of curing condition, and 10% addition of citric acid.

• Tribology and Lubricants
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• 제30권4호
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• pp.224-233
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• 2014

We prepared polyester-polyamines to improve the effect of carbon black dispersibility for use in thermal transfer ink, and synthesized polymeric dispersing agents by two-step reactions. In the first step, we made polyester by polycondensing 1,6-hexanediol and adipic acid. The resulting polymers had carboxylic acid, which was linked with polyamine via an acid-base reaction. We then characterized the polyester-polyamine structure by NMR spectroscopy and Fourier transform infrared spectroscopy (FT-IR). We also determined the basic characterizations such as total acid numbers (TAN) (5.0-67.5 mgKOH/g), hydroxyl values (27.1-67.5 mgKOH/g), and molar masses ($M_n=1.6-8.4kg\;mol^{-1}$) for the polyester and total base numbers (TBN) (15.3-57.1 mgKOH/g), hydroxyl values (33.0-79.8 mgKOH/g), and nitrogen contents (1.02-3.48%) for the polyester-polyamine polymers. We thus prepared thermal transfer ink using carbon blacks and the polyester-polyamine dispersing agents, and evaluated the resulting mixtures for printability, adhesive force, storage stability, ink appearance, ink gloss, and processability. These mixtures showed significant dispersibility for carbon black in the ink. Thus, we concluded that the dispersibility of the polymeric materials depended on the polyamine structure and the hydrophilicity-hydrophobicity distribution of the polymeric dispersants.

• 한국의류학회지
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• 제38권3호
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• pp.404-414
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• 2014

This study investigates the dyeability and fastness of jacquard fabric for blind using low-melting flame retardant polyester. Two types of jacquard fabric were prepared with a low-melting flame retardant polyester and regular polyester. The low-melting flame retardant polyester has a sheath and a core. The core consists of flame retardant polyester and the sheath consists of low-melting polyester. Disperse red 50 (DR 50), disperse blue 56 (DB 56), disperse yellow (DY 54) of E-type dyes and disperse 92 (DR 92), disperse blue 60 (DB 60), disperse yellow (DY 79) of S-type dyes were used and dyed on jacquard fabrics dependent of dyeing temperature and time. The fastness, dye exhaustion, color strength (K/S value), and colorimetric properties of jacquard fabrics were evaluated. The dyeability of S-type dyes were higher than E-type dyes. The experiments indicated optimum dyeability that the dyeing temperature was $110^{\circ}C$ for E-type dyes and $120^{\circ}C$ for S-type dyes for 40 minutes. The fastness to washing and light were excellent at a 4-5 grade.