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인계 화합물을 사용한 폐 폴리우레탄의 화학적 분해와 재활용에 관한 연구
고성호,김은혜,김상범 한국공업화학회 2004 응용화학 Vol.8 No.2
The each compounds of TCPP(Tri(2-chloropropyl) phosphante), TCEP(Tri(2-chloroethyl) phosphate), TMP(trimethyl phosphate) and TEP(triethyl phosphate) has been reacted with flexible polyurethane scrap to convert into liquid forms by thermal degradation. The structure, OH-value, and viscosity of the degraded products(DEP) were studied by FT-IR, titration and viscometer. The DEPs from flexible polyurethane scrap were apply as flame retardant to synthesize the rigid polyurethane foam. The thermal stability and inflammability of rigid polyurethane foams were estimated.
고성호,김상범,이동렬,오택수 한국공업화학회 2003 응용화학 Vol.7 No.2
Rigid polyurethane foam was synthesized using two types of organoclay and sodium montmorillonite. The organoclay used in this study were cloisite 30B, cloisite 24A. The content of nanoclay were varied from 1 to 10wt% of polyol. The Density and compressive strength of polyurethane/nanocomposite were investigated. The compressive strength in the polyurethane/nanocomposite was found to decrease with adding the nanoclay compared to that of the pristine rigid polyurethane foams. Namocomposite, synthesized using cloisite 30B had greater compressive strength than two other nanoclays. In the case of 30B, the compressive strength increase in proportion to the increase of nanocomposite's density.
Co-blowing agent 에 따른 경질 폴리우레탄 품의 물성 변화 연구
고성호,김상범 한국공업화학회 2004 응용화학 Vol.8 No.1
The physical properties of rigid polyurethane foam(PUF) synthesized using various types of blowing agents such as water, HFC-365mfc, HFC-245fa, HCFC-141b, CFC-11 and n-pentane were studied. The blending effect of blowing agents were also studied. The thermal conductivity, reaction rate, and cell morphology of the PUF with various blending ratio of blowing agents were investigated. The PUF blown by water shows the highest compressive strength among other single blowing agents. The thermal conductivity of PUFs blown by HFC-245fa and HFC-365mfc are close to that of PUFs blown by CFC-11. When HFC-365mfc was mixed with HFC-245fa(30mole%) as coblowing agent, the mechanical property shows the highest value among other coblowing agents. It is that the thermal conductivity of PUFs depends on cell size of PUFs as well as thermal conductivity of blowing agent in gaseous form.
우루시올을 이용한 폴리우레탄 안창 제조와 물성에 관한 연구
고성호,김상범 한국공업화학회 2004 응용화학 Vol.8 No.1
Polyurethane insole was synthesized using urushiol extracted from lacquer. The reactivity, hardness, mechanical strength and antibiosis of the polyurethane insole were investigated. As the content of urushiol increased, the reactivity become faster. The hardness and mechanical properties of polyurethane insoles prepared with urushiol were smaller than pure polyurethane insole. however, in the case of polyurethane insole prepared with urushiol, as the urushiol content increased, the hardness, tensile strength and tear strength were on the increase. In the antibiosis test, the staphylococcus aureus and escherichia coil of polyurethane insole synthesized with urushiol were observed on the decrease of 99.9%.
보조 발포제로 사용되는 물의 양이 경질 폴리우레탄 폼의 열전도도에 미치는 영향
고성호,김상범 한국공업화학회 2003 응용화학 Vol.7 No.1
Riged polyurethane foam was syuthesized using various types of physical blowing agents and water as a co-blowing agent. The physical blowing agents used in this syudy were HCFC-14lb, HFC-365mfc,and n-pentane,The thermal conductivity reaction rate, and cell morphology of the rigid polyurethane foam were investigated, As the content of water increased, the reactivity cell size vecome faster and smaller, respectively. In the case of n-pentane,as the water content of the teaction mixture inspectively. the thermal conductivity dercreased until lpph(part per hundred of polyol inweioght ) of water content , and then increased as the amount of water increased Therefore. in rigid polyurethane foam blown by physical blowing agent with various content of water seems that the thermal conductivity behavior depends not only the cellsize but also thermal conductivity of CO_2 at gas phase.