• 제목/요약/키워드: 라텍스

검색결과 253건 처리시간 0.026초

라텍스 입자구조가 필름형성 및 필름물성에 미치는 영향 (III);모델 복합라텍스 입자의 필름물성 (Effect of Latex Particle Morphology on the Film Formation and Film Properties of Acrylic Coatings (III);Film Properties of Model Composite Latex)

  • 주인호;변자훈;우종표
    • 한국응용과학기술학회지
    • /
    • 제21권3호
    • /
    • pp.259-266
    • /
    • 2004

  • Film properties of monodispersed model composite latexes with particle size of 190 nm, which consist of n-butyl acrylate as a soft phase monomer and methyl methacrylate as a hard phase monomer with different morphology was examined. Five different types of model latexes were used in this study such as random copolymer particle, soft-core/hard-shell particle, hard-core/soft-shell particle, gradient type particle, and mixed type particle. Tensile strength and tensile elongation at break of final films were evaluated. Those properties can be interpreted in terms of PBA/PMMA phase ratio and their morphology. The interfacial adhesion strength was also evaluated using $180^{\circ}$ peel strength measurement and cross hatch cutting test.

  • https://doi.org/10.12925/jkocs.2004.21.3.10 인용 PDF KSCI

조강형 라텍스개질 스프레이 모르타르의 특성 (Characteristics of High Early Strength Latex Modified Sprayed-Mortar)

  • 윤경구;이봉학;이진범
    • 산업기술연구
    • /
    • 제33권A호
    • /
    • pp.93-99
    • /
    • 2013

  • Shotcrete has been referred to as gunite, pneumatically applied mortar or concrete, sprayed concrete or mortar. There are sound reasons why sprayed mortar is one of the best portland cement based material for repairing old concrete structures. However, it is difficult to find the research results on the latex-modified mortar nevertheless on the impact of air onto the fresh and hardened properties of latex-modified mortar. So, the main experimental program included strength test, slump test, rapid chloride permeability test, image analysis for air void system, and chemical attacks with the main experimental variables of latex content, fine aggregate content, water-cement ratio, and air foamer content.

  • PDF

라텍스 모르타르를 이용한 콘크리트 교면 방수층 보호 공법 개발 및 적용에 관한 연구 (Application and Development of Protect Technique for waterproofing Reinforced Concrete Bridge Decks by Latex-Modified Mortar)

  • 한상일;이원영;김재원;강승희;차동화;김진만
    • 한국건축시공학회:학술대회논문집
    • /
    • 한국건축시공학회 2009년도 추계 학술논문 발표대회
    • /
    • pp.175-178
    • /
    • 2009

  • This study is thing for construction properties that protect about damage of waterproofing course that is problem in asphalt pavement and latex modification concrete pavement. It is thing about new method of construction and develop protecting material of waterproofing. Did performance test item first at, as a result, drew by suitable thing in all KS items, This is considered to have more effective spot construction work because if means that have stability by material as well as method construction.

  • PDF

폴리스티렌 라텍스 제조에 있어서 Triton X-100/SDS 계면활성제 혼합이 단량체/수용액 간의 계면물성 및 라텍스의 특성에 미치는 영향 (The Effects of Interfacial Properties of the Styrene/Water on the Styrene Latex Particle Properties using Triton X-100/SDS Surfactant Mixture)

  • 박아름이;김영호
    • 한국응용과학기술학회지
    • /
    • 제27권3호
    • /
    • pp.240-248
    • /
    • 2010

  • The blending effects of surfactants on the polystyrene emulsion polymerization were studied. The blending of Triton X-100 and SDS affects to the interfacial properties of the styrene monomer and water phases, and finally, the properties of the polystyrene latex particles. As the blending ratio of SDS/Triton X-100 increases, the interfacial tension and CMC of the blended surfactants were decreased and results in a reducing the size of the latex particles. It was found that the interfacial tension was reduced when the surfactant were blended. By increasing the SDS content, the interfacial tension was reduced, and, at a certain condition, the interfacial tension was reached to an extremely low value to form micro-emulsion and the nano-sized latex particles (80~110 nm).

  • https://doi.org/10.12925/jkocs.2010.27.3.3 인용 PDF KSCI