• Title/Summary/Keyword: 상도도막

Search Result 4, Processing Time 0.018 seconds

Development Status of the Automotive Paint Technology (자동차용 도료의 기술개발 현황)

  • Cho, Young-ho
    • Applied Chemistry for Engineering
    • /
    • v.4 no.1
    • /
    • pp.1-7
    • /
    • 1993
  • 자동차용 도료의 도장 품질은 미려한 외관과 더불어 내후성, 내약품성, 방청성, 내Chipping성등 물리화학적인 물성이 우수해야 한다. 특히 최근에는 이러한 도장품질과 더불어 지구환경 보호 및 도장 Cost 절감과 관련된 기술개발 요구가 고조되고 있으며, 산성비등의 환경오염 물질에 대한 저항성 및 내Scratch성 향상을 위한 기술개발 노력이 경주되고 있으며, 본 총설에는 자동차 도료 system즉 하도, 중도, 상도등의 상세한 도막별 특성에 관한 기술 내용 설명을 피하고, 도장품질 향상과 지구환경 보호 측면에서의 자동차도료 개발현황 및 향후 방향에 대하여 설명하고자 한다.

  • PDF

Acoustic Characterization of Coatings for Stringed Instruments with Various Coating Thickness (도막두께에 따른 현악기용 도료의 음향적 성질)

  • Choi, Jae-Hoon;Hwang, Heon-Deuk;Lee, Byoung-Hoo;Kim, Hyun-Joong;Chung, Woo-Yang
    • Journal of the Korean Wood Science and Technology
    • /
    • v.34 no.1
    • /
    • pp.32-39
    • /
    • 2006
  • The acoustic properties of various coatings for stringed musical instruments made were investigated. The applied coatings were urethane topcoat, oil stain and UV-curable epoxy coating. Acoustic properties of coatings inferred from the elastic modulus and the shear modulus that ware calculated from a resonance frequency and a damping measured by FFT analyzer. The relationship between elastic modulus and density and the relationship between elastic modulus and shear modulus of coatings for stringed musical instruments ware investigated as a function of coating thickness.

Viscoelastic and Acoustic Characterization of Coatings for Stringed Instruments (현악기용 음향기능성 도료의 점탄성적 성질과 음향적 성질)

  • Choi, Jae-Hoon;Lee, Byoung-Hoo;Kim, Hyun-Joong;Chung, Woo-Yang
    • Journal of the Korean Wood Science and Technology
    • /
    • v.33 no.4 s.132
    • /
    • pp.15-22
    • /
    • 2005
  • The acoustic properties of various coatings for stringed musical instruments made were investigated. The applied coatings were urethane topcoat, oil stain, natural varnish, cashew and UV-curable epoxy coating. Acoustic properties of coatings inferred from a resonance frequency and a damping measured by FFT analyzer and tan ${\delta}$ measured by DMTA. Acoustic properties from resonance frequency and damping were analyzed. Optimum coating for stringed instruments was determined by viscoelastic properties and acoustic properties of coating.

A Study on Suitable the Amount of Consumption of 2K Urethane Paint (2액형 우레탄도료의 적정 소모량 연구)

  • You, Chang-Bae
    • Transactions of the Korean Society of Automotive Engineers
    • /
    • v.18 no.5
    • /
    • pp.130-135
    • /
    • 2010
  • Paint is used as top coat in Automobile Refinishing that is divided into 1K paint of base type and 2K paint of urethane type. after using 1K paint, it can be reusable. However 2K paint is not available that is mixed a certain amount of base with hardner, so 2K paint has to be used all at a time or discarded the rest. This study covered that colored Urethane paint and colorless urethane paint in top coating process of AR. Top coat urethane paint is divided into colored urethane paint and transparent urethane paint like clear coat. Colored urethane paint is used for paint that contains resin, pigment, solvent and additives. It is color such as black and white. While transparent urethane paint is used for paint that contains resin, solvent and additives. Urethane paint has a paint system that cur after several hours of mixing base and hardner. By a paint technician of a field and empirical data, we can also recognize that according to worker's paint style and experience, although he or she paint same car model and area, paint use of one's is different. There aren't guidelines workers refer to about paint use by car models and work scope because ARP works various car models that are in different color, size and area. After using urethane paint, the rest of paint has come, and there are highs and lows in paint use each time he or she works. Therefore, this study suggest a basic guideline to use paint efficiently and regularly by understanding area, the type of work, and paint use that are appropriate for each car model and regardless of workers and work scopes in AR.