실리콘 변성 폴리아크릴계 Hybrid Elastomer의 제조와 그 특성

Polydimethylsiloxane prepolymer와 2-hydroxyethyl methacrylate(HEMA)를 이용하여 polydi-methylsiloxane을 도입한 HEMA(SH)를 제조하였다. 여기에 methacrylic acid (MA), allyl glycidyl ether(AGE) 및 aminopropyltrimethoxysilane(APTS)를 이용하여 실록산 변성 polyacrylate hybrid(SMPA)를 제조하고 이들의 구조를 FTIR 및 1H-NMR로 확인하였다. SMPA에 대한 내열특성을 TGA를 통해 측정한 결과 400 ℃에서 무게 잔존율(Wtr, %)은 APTS의 함량이 증가할수록 55에서 63%로 증가하여 나타났다. 제조한 SMPA에 증점제, 가교제 등의 각종 첨가제들을 가하여 SMPA 실란트를 제조하였다. 접착특성을 측정한 결과 SMPA-3를 이용하여 제조한 실란트의 경우 concrete와 금속사이의 최대 하중 신장률은 2.01%, 파괴 하중 신장률은 2.28%로 SMPA-1 및 SMPA-2를 이용하여 제조한 실란트의 1.07, 1.45%와 1.02, 1.35%인 경우보다 증가되었다. Polydimethylsiloxane branched HEMA (SH) was prepared by reacting polydimethylsiloxane prepolymer and 2-hydroxyethyl methacrylate (HEMA). Polyacrylate modified polyorganosiloxane (SMPA) was prepared by polymerization of methacrylic acid(MA), allyl glycidyl ether(AGE), aminopro-pyltrimethoxysilane(APTS), and SH. Their structures were confirmed by the measurement of FTIR and 1H-NMR and thermal properties of SMPA were studied from TGA. Residual weight of SMPA at 400 ℃ increased according to increasing content of the APTS to 63 from 55%. SMPA sealant was prepared by adding additives, such as viscosity increasing agent, crosslinking agent, and fillers. Adhesion characteristics of SMPA-3 sealant was determined to be maximum load elongation, 2.01%, and break load elongation, 2.28%. Adhesion characteristics for SMPA sealant prepared from SMPA-3 were better than those for SMPA sealant prepared from SMPA-1 and SMPA-2. KCI Citation Count: 3