http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
권충렬,이주홍,민진규,원종찬,배지홍,허필호 한국공업화학회 2020 한국공업화학회 연구논문 초록집 Vol.2020 No.-
Polyurethane Pressure-sensitive Adhesives (PU-PSA) have been successfully synthesized using various polyols (PEG, PPG etc.) and isocyanates (HDI, IPDI etc.) to control adhesion with no transfer left. In this study, to develop a polyurethane adhesive with better adhesive strength, urethane synthesis research was conducted by changing the ratio of polyol. The presence or absence of polyurethane adhesive synthesis through the ratio control of polyol and isocyanate was analyzed by Fourier-Transform Infrared Spectroscopy(FT-IR), and the characteristics of Polyurethane Pressure-sensitive Adhesives (PU-PSA) were analyzed by using One hundred eighty-degree peel tests by universal testing machine (UTM) and UV-vis Spectrometer to compare structure and characteristics.
Synthesis and Comparison of Isosorbide-Based Polyurethane Using the Molecular Weight of Polyols
민진규,권충렬,모영현,임원빈,배지홍,허필호 한국고분자학회 2021 한국고분자학회 학술대회 연구논문 초록집 Vol.46 No.2
Thermoplastic polyurethanes (TPUs) were successfully synthesized using condensation polymerization based on different molecular weights of polyol and methylene diphenyl diisocyanate for soft segments and isosorbide (ISB) chain extender as hard segments. An increase in the molecular weight of the polyol significantly affected the thermal properties. Various properties were evaluated by Fourier transform infrared spectroscopy (FT-IR), gel permeation chromatography (GPC), universal testing machine (UTM), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA). Polyurethanes using different molecular weights of polyols can be applied at various temperatures depending on the required properties.
이규혁,이주홍,권충렬,임원빈,배지홍,허필호 한국고분자학회 2021 한국고분자학회 학술대회 연구논문 초록집 Vol.46 No.2
Acrylic polymer binders with high transparency and good mechanical strength were blended on various ratio using PMMA (poly methyl methacrylate), 2-HEMA (2-hydroxyethyl methacrylate), PTE, BPO (benzoyl peroxide) and urethane acrylate. Designed acrylic polymer binders with urethane acrylate were cured by using BPO/PTE Redox initiating system (ROIS). Various properties to apply as acrylic binder were studied through Fourier-transform infrared spectrometer (FTIR), Universal test machine (UTM), UV-visible spectrophotometer (UV-vis). The binder exhibited high adhesion strength, transmittance, gel fraction.
Synthesis of TPU applied to the skin layer of the dashboard
김지효,허필호,민진규,권충렬,이규혁,배지홍 한국공업화학회 2020 한국공업화학회 연구논문 초록집 Vol.2020 No.-
Thermoplastic polyurethanes (TPUs) series were synthesized using polyol(diol and triol), isocyanate(MDI, HDI, IPDI, TDI, etc.) and 1,4-butandiol(1,4-BD) as chain extender. Synthesized TPUs were evaluated using universal test machine(UTM), fourier transform infrared spectrometer(FT-IR) and thermos gravimetric analysis(TGA). Mechanical properties were evaluated using Universal Testing Machine(UTM), and thermal stability was evaluated by Thermos Gravimetric Analysis(TGA). TPUs containing triols had a change in physical properties. Synthesized TPUs exhibited high mechanical properties and heat-resisting property for instrument panel applications.