Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Synthesis of Modified Silane Acrylic Resins and Their Physical Properties as Weather-Resistant Coatings

실란 변성아크릴수지의 합성과 고내후성 실리콘/아크릴수지 도료의 도막물성

  • 박홍수 (명지대학교 공과대학 화학공학과) ;
  • 홍석영 (명지대학교 공과대학 화학공학과) ;
  • 김송형 (명지대학교 공과대학 화학공학과) ;
  • 유규열 (명지대학교 공과대학 화학공학과) ;
  • 안성환 (명지대학교 공과대학 화학공학과) ;
  • 함현식 (명지대학교 공과대학 화학공학과) ;
  • 김성길 ((주)알엔씨 기술연구소)
  • Published : 2007.03.31
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Abstract

To prepare weather-resistant silicone/acrylic resin coatings for an architectural purpose, tetrapolymers were synthesized by a radical polymerization. 3-Methacryloxypropyltrimethoxysilane (MPTS) as a silicone monomer and n-butyl acrylate, methyl methacrylate, and n-butyl methacrylate as acrylic monomers were used. The compositions of monomers were adjusted to fix the glass transition temperature of acrylic polymer for $20^{\circ}C$. The composition of MPTS in the synthesized polymer were varied from 10 wt% to 30 wt%. On the basis of synthesized resin amber paints were prepared and their physical properties and effects for weatherability were examined. The presence of MPTS in silicone/acrylic resins generally resulted in low molecular weight and broad molecular weight distribution, and also lowered the viscosity of the copolymers. The coated films prepared from these resins showed good and balanced properties in general. Adhesion to the substrate was outstanding in particular. Weatherability tests were carried out in three different types such as outdoor exposure, QUV, and SWO. The test results showed that the silicone/acrylic resins containing 30 wt% of MPTS had weather-resistant properties.

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References

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