Textile Coloration and Finishing (한국염색가공학회지)

The Korean Society of Dyers and Finishers (한국염색가공학회)
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Study on the Improvement of the Fastness of Dyeing for Environmentally Synthetic Suede Using Silica Particles

실리카 입자를 활용한 친환경 인조스웨이드의 견뢰도 향상에 관한 연구

  • Lee, Hye Mi (Korea Dyeing and Finishing Technology Institute(DYETEC)) ;
  • Kim, Ah Rong (Korea Dyeing and Finishing Technology Institute(DYETEC)) ;
  • Kim, Dae Geun (Korea Dyeing and Finishing Technology Institute(DYETEC))
  • 이혜미 (다이텍연구원 부산분원) ;
  • 김아롱 (다이텍연구원 부산분원) ;
  • 김대근 (다이텍연구원 부산분원)
  • Received : 2018.11.14
  • Accepted : 2018.12.12
  • Published : 2018.12.27
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Abstract

In recent years, research on the development of eco-friendly synthetic suede based on water-dispersed polyurethane resin and non-fluorine water repellent has been conducted. Synthetic suede has a problem that the fastness to dyeing is greatly lowered after the water-repellent processing at a high temperature of $160^{\circ}C$ because the polyester is dyed with a disperse dye. Therefore, in this study, silica was added to water-dispersed polyurethane resin to improve dye fastness. To distribute the $PUD-SiO_2$ mixture evenly in the water-dispersed polyurethane resin, sufficient stirring was done for a period of time. When the $PUD-SiO_2$ mixture(PUD 1-5%) is applied to the substrate, it is confirmed through SEM that the mixture is uniformly applied without particle condensation. The results showed that silica with a diameter of 4~12nm and BET of $200{\sim}380g/m^2$ had the ability to improve dispersibility and fastness.

Keywords

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Scheme 1. Stirring conditions of preparing stock solution.

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Figure 1. Variance stability(∆BS) graph on concentration of PUD-SiO2(AE 200) 1~5%.

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Figure 2. Variance stability(ΔBS) graph on concentration of PUD-SiO2(AE 380) 1~5%.

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Figure 3. Variance stability(ΔBS) graph on concentration of PUD-SiO2(OK 412) 1~5%.

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Figure 4. FT-IR spectra of PUD-SiO2; (a) PUD, (b) PUD+SiO2(AE200), (c) PUD+SiO2(AE380), (d) PUD+SiO2(OK412).

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Figure 5. SEM image of impregnated PET synthetic suede by PUD-SiO2 concentration; (a) 1% AE200, (b) 3% AE200, (c) 5% AE200, (d) 1% AE380, (e) 3% AE380, (f) 5% AE380, (g) 1% OK412, (h) 3% OK412, (i) 5% OK412.

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Figure 6. Effect of SiO2 contents on the tear strength.

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Figure 7. Effect of SiO2 contents on the tensile strength.

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Figure 8. Effect of SiO2 contents on the elongation.

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Figure 9. Schematic drawing on the adsorption of dyeing over the surface of PUD-SiO2.

Table 1. Properties of silica(SiO2)

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Table 2. Specimen of PET tricot fabric

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Table 3. Specimen of PET tricot fabric

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Table 4. Colorimetric result of fastness by each type and concentration of SiO2

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Table 5. Water repellency by each type and concentration of SiO2

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