http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
한승택,유지강 조선대학교 생산기술연구소 2004 生産技術硏究 Vol.26 No.1
The oxadizole-containing acryl polymers are prepared by reacting dimethyl terephthalate with hydrazine monohydrate followed by cyclodehydration, chain extension, reaction with acryloyl chloride and free radical polymerization. In this study, oxadiazole-containing acryl polymers having alkylene spacer such as ethylene or hexamethylene unit are synthesized and their luminescent properties as well as thermal and solubility properties are investigated. The both of oxadiazole-containing acryl polymers having ethylene(PC2-OXA) and hexamethylene(PC6-OXA) show the photoluminescence at 372nm in THF and around 385nm in a film state. In contrast, analog of PC6-0XA having dimethylarnino group at the end of pendant group(PC6-AOXA), designed to shift emission wavelength to visible range, shows the photoluminescence at about 500nm in THF or in a film state which corresponds to greenish-blue color. PC6-OXA and PC6-AOXA show good solubility in various organic solvents.
광개시제의 영향에 의한 자외선 양이온 경화형 도료의 경화 특성과 물성에 관한 연구
한승택,조정대,박진성,홍진후 조선대학교 생산기술연구소 2005 生産技術硏究 Vol.27 No.spec
We investigated the coating and curing properties of UV-cationic systems containing different photoinitiators for through and high speed cure by using differential photocalorimetry(Photo-DSC) and fourier-transform infrared spectroscopy(FT-IR). Results of the physical properties showed that the system with iodonium salt type photoinitiator gave slower curing rate but better film properties than those of the systems with sulfonium salt type photoinitiators. Photo-DSC and FTIR/ATR analyses exhibited that the system containing 0.5wt% anthracene photosensitizer and the system conducted on dual curing at 80℃ revealed significantly improved curing rate and crosslink density.
홍진후,주형태,한승택 조선대학교 생산기술연구소 2004 生産技術硏究 Vol.26 No.1
We investigated the effects of photosynergist and LED curing on the kinetic and film properties of UV curable coatings containing micro-silica. Cure kinetics were studied by DPC and the degree of curing at the surfaces and the interfaces with substrate were investigated by FT-IR/ ATR. Coating properties such as hardness, gloss, chemical and stain resistances and adhesion of the UV cured films containing various concentration of micro-silica were investigated. The results showed that UV cured films containing micro-silica provide an excellent matting property while sacrificing chemical resistance due to the surface morphology and oxygen inhibition. The UV cured films containing photosynergist produced superior surface properties such as chemical resistance while sacrificing the adhesion and matting properties. LED-UV dual curing system was proposed to optimize the process for the system where both high matting and excellent coating properties are required.