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김광인,이주헌,이현주,한학수 한국수소및신에너지학회 2017 한국수소 및 신에너지학회논문집 Vol.28 No.1
In this study, Poly-urethane acrylate (PUA) was synthesized by the reaction between Polycaprolactonetriol (PCLT) and Isophorone dissocyanate (IPDI) and hybridized with inorganic materials. Tetraethylortho silicate (TEOS) and nano clay (Closite 20A) were used as inorganic particles. For the hybridization of TEOS with PUA, sol-gel method is used, in which TEOS is made into spherical particle in the firsthand. In the case of Nano clay, hybridization is carried out through the dispersion as Nano clay has a layered structure. The solution of PUA hybrid was made into a film after UV curing and its thermo and electrical properties were measured. The experimental analysis and result demonstrate that the PUA hybrid shows an improved thermal properties and lower dielectric constant than that of the non-hybrid PUA. The trend of improved properties was different depending on structure of inorganic materials.
1P-39 Effects of catalyst type and reaction time for polyamide-imide synthesis
김광인,김상곤 한국공업화학회 2017 한국공업화학회 연구논문 초록집 Vol.2017 No.1
Aromatic polyimides have been widely used in industry because of excellent properties in thermal stability, chemical resistance, and mechanical properties. But they have some disadvantages that most of aromatic polyamides were not dissolved in most organic solvents and were difficult to process due to intermolecular interactions. In order to improve solubility and processibility with maintaining thermal stability, amide group was combined with polyimide. In this study, it was investigated the effects of catalyst type and reaction time for polyamide-imide synthesis.
김광인,공정일,김태균 한국공업화학회 2014 한국공업화학회 연구논문 초록집 Vol.2014 No.1
A thermally curable inorganic resin for antistatic coating of humidity type was polymerized by sol-gel technology from TEOS(tetraethoxyorthosilane), QAS(Quarternary ammonium salt functionalised triethoxysilane) and DIW. The QAS was prepared by reacting benzylchloride and TAS(r-tertiaryaminopropyl triethoxysilane) which was prepared from addition reaction of APS(r-aminopropyltriethoxysilane) and HEA(Hydroxyethylacrylate). The structure of these materials was observed by infrared spectroscopy(FT-IR), nuclear magnetic resonance(NMR) and thermally property was measured by thermo-gravimetric analysis (TGA). The surface properties such as hardness is H or 2H, IPA rubbing test for solvent resistance was 100 times and electronic surface resistance was 108~1011Ω/a with relative humidity. These properties depended upon QAS and TEOS ratio and evaluated on PC, PET.