• 제목/요약/키워드: waterborne polyurethane resin

검색결과 15건 처리시간 0.017초

피혁가공용 수용성 아크릴-폴리우레탄 Hybrid Resin의 합성 및 기계적 특성에 관한 연구 (Study on Mechanical Properties of Waterborne Polyurethane-Acrylic Hybrid Resin for Leather Coationgs)

  • 이주엽;김기준
    • 한국응용과학기술학회지
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    • 제27권2호
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    • pp.188-195
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    • 2010
  • In this study, we experimented that how to synthesis waterborne urethane-acrylic hybrid resin for leather coatings. First of all, We had analyzed data by FT-IR, SEM and TGA for the machanical properties. By TGA analysis polymers showed heat distortion temperature. and by FT-IR measurement we confirmed that synthesis of urethane and acrylic. In the experiment, solvent resistance, polyurethane and acrylic grades 4-5 showed both a high. Tensile strength measured in the waterborne polyurethane > Acrylic emulsion showed strength in the order. Films were obtained by coating the water born resin on leveled surfaces and allowing them to dry at room temperature for 72hrs. After demolding, the films were kept in a desiccator to avoid moisture contant at $25^{\circ}C$ for 45hrs before the measurements. In this result, the mechanical propersies of waterborne polyurethane-acrylic hybrid resin showed that how effect to resin in leather coating between polyurethane content and acrylic content. Therefore, acrylic emulsion had most high solvent resistance glade and waterborne polyurethane had good result in abrasion test and tensile strength.

Full-Grain 피혁용 수용성 아크릴 Base coat 수지의 합성 및 물성측정 연구 (A Study of Synthesis and Mechanical property measurement for Waterborne Acrylic Base coat Resin in Full-Grain Leather)

  • 이주엽;김기준
    • 한국응용과학기술학회지
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    • 제28권3호
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    • pp.359-366
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    • 2011
  • In this study we experimented that how polyurethane effect to acrylic-polyurethane resin in Full-Grain leather coatings. First of all, we consummated waterborne acrylic emulsion and waterborne polyurethane resin, Than we prepared F.G leathers which were coated by acrylic resin and acrylic-polyurethane resins. According to measured data for solvent resistance, acrylic resin and acrylic-polyurethane resins had good property. Sample a(WAC) had most low strength($2.10kg_f/mm^2$) and sample d(WAC 93 : WPU 7) had most high strength($3.41kg_f/mm^2$). Also we knew that most good property of abrasion is d(47.4 mg). In elongation case, a(WAC) had most good result(645 %) in this experiment.

수용성 폴리우레탄-아크릴 하이브리드수지의 합성 및 사슬 연장에 관한 연구 (A Study of Chain Extension and Synthesis in Waterborne Polyurethane-Acrylic Hybrid Resin)

  • 이주엽;김기준
    • 한국응용과학기술학회지
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    • 제28권2호
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    • pp.203-212
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    • 2011
  • In this study we experimented that how chain extension influences to waterborne urethane-acrylic hybrid resin for leather garment coatings. We knew that polyurethane-acrylic hybrid resins had 5 grades of solvent resistance. Tensile strength measured in the polyurethane-acrylic resin(EDA 5.37 g, 1.928 kgf/$mm^2$) had the most strong strength. Also polyurethane-acylic hybrid resin(EDA 5.37 g. 30.2 mg. loss) had better result than other hybrid resins. EDA contents higher, we obtained low elongation and low flexibility. In this result, chain extension of waterborne polyurethane-acrylic hybrid resin showed the effect in leather coating with ratio of EDA.

수용성 하이브리드수지(폴리우레탄-에폭시)의 합성 및 사슬 연장에 관한 연구 (A Study of Chain extension and Synthesis in Waterborne Polyurethane-Epoxy Hybrid Resin)

  • 이주엽;김기준
    • 한국응용과학기술학회지
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    • 제28권1호
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    • pp.109-117
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    • 2011
  • In this study, we experimented that how influence chain extension to waterborne urethane-epoxy hybrid resin for leather garment coatings. First of all, We had analyzed datas by FT-IR, SEM and machanical properties. By instruments analysis measurement we confirmed that synthesis of epoxy and hybrid resin. In this experiment we knew that polyurethane-epoxy hybrid resin have 5 grades of solvent resistance. Tensile strength measured in the polyurethane-epoxy resin(EDA 5.37g, 2.386 $kg_f/mm^2$) had the most strong strength.. Also polyurethane-epoxy hybrid resin had better result(EDA 5.37g. 37.4 mg. loss) than other hybrid resins. As hight proportion of EDA in hybid resin, we obtained low elongation and low flexibility. In this result, chain extension of waterborne polyurethane-epoxy hybrid resin showed that how effect in leather coating by ratio of EDA.

스피커 댐퍼용 아미노실란 처리 수분산 폴리우레탄/에폭시 하이브리드 수지의 합성 (Synthesis of Aminosilane treated Waterborne Poly Urethane/Epoxy Hybrid Resin used for Loudspeaker Damper)

  • 최현석;최동호;박주용;허만우
    • 한국염색가공학회지
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    • 제29권1호
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    • pp.25-36
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    • 2017
  • This study worked on the synthesis of waterborne polyurethane/epoxy hybrid resins containing aminosilane compound to replace conventional phenol resins used for a coating material for loudspeaker dampers, which are not harmful to human being. Waterborne polyurethane resins were synthesized from two diisocyanate of 4,4'-diphenylethane diisocyanate and toluene diisocyanate, two polyols of polyester polyols(PEP), polycarbonatediol(PCD), including and anionic center of dimethylol butanoic acid, a chain extenders of ethylenediamine(EDA), and a neutral agent of triethylamine. Synthesized polyurethane resins and commercially available bisphenol A type waterborne epoxy resin were blended in weight ratios of 80:20 to prepare polyurethane/epoxy hybrid resins. The synthesized waterborne polyurethane/epoxy hybrid resins were reacted with aminosilane compound to improve mechanical properties. Aminosilane-treated polyurethane /epoxy hybrid resins showed better mechanical properties.

의상 피혁 가공용 수용성 폴리우레탄-에폭시 하이브리드 수지의 합성 및 물성에 관한 연구 (Study on Properties of Waterborne Polyurethane-Epoxy Hybrid Resin for Leather Garment Coationgs)

  • 이주엽;김기준
    • 한국응용과학기술학회지
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    • 제27권3호
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    • pp.325-336
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    • 2010
  • In this study, we experimented that how to synthesis waterborne urethane-epoxy hybrid resin for leather garment coatings. First of all, We had analyzed datas by FT-IR, SEM and TGA for the machanical properties. By instruments analysis measurement we confirmed that synthesis of urethane and epoxy. In this experiment we knew that polyurethane and urethane-epoxy hybrid resin have 4~5 grades of solvent resistance. Tensile strength measured in the urethane-epoxy resin(epoxy 12%, 2.033$kg_f/mm^2$) had the most strong strength than polyurethane(1.833 $kg_f/mm^2$) emulsion samples. Also urethane-epoxy hybrid resin had better result than polyurethane in acid resistance and abrasion test. As hight proportion of epoxy in hybid resin, we obtained low elongation and low flexibility. In this result, the mechanical properties of waterborne polyurethane-epoxy hybrid resin showed that how effect in leather coating by ratio of epoxy emulsion.

Milk casein을 이용한 수용성 polyurethane-acrylic hybrid resin의 합성 및 물성 영향에 관한 연구 (A study on synthesis and mechanical properties polyurethane-acrylic hybrid resin with milk casein)

  • 이주엽;남상성
    • 한국응용과학기술학회지
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    • 제30권3호
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    • pp.567-574
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    • 2013
  • For this research, prepared water soluble milk casein resin and waterborne polyurethane-acrylic resin. Use these resin, this article has been analyzed about change of mechanical properties by increasing amount of casein resin in polyurethane-acrylic resin on coated leather. According to measure data for solvent resistance, WPA(waterborne polyurethane-acrylic resin) resin and WPA-C1, C2, C3(samples of polyurethane-acrylic resin with milk casein resin) had good property. As known in the results, increase of casein constant did not influence to big change of hybrid resin properties. As test of tensile strength, WPA had lowest tensile characteristic(1.598 $kg_f/mm^2$) and WPA-C3 had highest tensile characteristic(1.718 $kg_f/mm^2$). Also best properties of abrasion was WPA-C3(06.021 mg.loss). In elongation case, WPA had best properties(754 %) in this experiment.

Preparation and Characterization of Coating Solution Based on Waterborne Polyurethane Dispersion containing Fluorine for Primer on Electro Galvanized Steel Sheet

  • Jin, Chung Keun;Lim, Sung Hyung
    • Corrosion Science and Technology
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    • 제14권5호
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    • pp.207-212
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    • 2015
  • The purpose of this research was to synthesize fluorine modified waterborne polyurethane dispersion (F-WPU) by soap-free (internal emulsifier) emulsion polymerization techniques, to prepare coating solution based on fluorine modified waterborne polyurethane dispersion (F-WPU) and to compare the chemical and thermo-mechanical properties on the electrogalvanized steel sheet. Environmentally friendly F-WPU was prepared with a fluorinated polyol containing 60 wt% of fluorine. There are various ways of combining a wide variety of fluorinated polyols and diisocyanate to exhibit novel properties of waterborne polyurethane dispersion. Components of coating solution were largely divided into 4 kinds i.e., F-WPU, acrylic emulsion, silane coupling agent, and colloidal silicate. F-WPU coating solution on the electro-galvanized steel sheet showed excellent properties of corrosion resistance, alkali resistance and heat resistance, as compared to other coating solutions using a general waterborne resin. The F-WPU coating solution's reliable effects are possibly due to the fluorine atoms incorporated even in a small amount of F-WPU.

Epoxy를 사용한 수분산 폴리우레탄의 합성 및 물성 (Synthesis and Properties of Waterborne Polyurethane Using Epoxy Group (WPUE))

  • 박지연;정부영;천정미;하창식;천제환
    • 접착 및 계면
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    • 제16권1호
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    • pp.22-28
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    • 2015
  • 본 연구에서는 수분산 폴리우레탄의 내가수분해성 및 접착력을 향상시키기 위하여 polyester polyol, epoxy resin, 4,4-dicyclohexylmethane diisocyanate ($H_{12}MDI$), dimethylol propionic acid (DMPA)를 사용하여 epoxy를 함유한 수분산 폴리우레탄을 합성하였다. 또한 합성된 수분산 폴리우레탄의 물성은 DSC, UTM, adhesion test 등을 통해 평가하였다. 합성된 수분산 폴리우레탄의 Tg는 $-50^{\circ}C$ 부근에서 나타났으며, epoxy resin의 함량이 증가함에 따라 Tg도 상승하는 결과를 나타내었다. Epoxy resin의 함량이 증가함에 따라 인장강도는 증가하였고, 신율은 감소하였다. 또한 접착력 및 내가수분해 접착력은 polyol : epoxy = 99 : 1에서 최고값을 나타내었다.

Milk casein과 수용성 폴리우레탄 resin을 이용한 산업 안전 방재용 하이브리드 film의 합성 및 기계적 물성에 관한 연구 (Study on Mechanical Properties of Hybrid Resins by Milk Casein and Waterborne Polyurethane for Safety Management of Industrial Disaster)

  • 이주엽;김기준
    • 한국응용과학기술학회지
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    • 제29권2호
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    • pp.356-363
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    • 2012
  • 본 연구에서는 밀크 카제인과 WPU를 이용한 하이브리드 수지를 합성하였다. 합성한 하이브리드 수지를 피혁(Full-Grain) 표면에 코팅을 하여 카제인이 하이브리드수지에 어떤 영향을 주는지에 대해 분석 하였다. 내용제성 테스트 데이터에 의하면 WPU 와 하이브리드 수지 양쪽 모두 높은 물성치를 나타내었다. 인장 강도 측정치에서는 WPU 단독 결과(2.130 $kg_f/mm^2$)가 가장 낮은 수치를 나타내었으며, WPC-3(WPU 91: casein resin 9)의 경우가 가장 높은 인장력(2.191 $kg_f/mm^2$)을 나타내었다. 또한 내마모도 측정에서는 WPC-3(50.090 mg.loss)가 좋은 물성값을 나타내었다. 연실률의 경우 WPU(637 %) 단독 코팅물의 분석값이 가장 높은 637%로 알 수 있었다.