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박홍수,임완빈,안종일 ( Hong Soo Park,Wan Bin Im,Chong Il Ahn ) 한국공업화학회 1995 공업화학 Vol.6 No.5
POE(6)-2-ethylhexyl ether(PEH-6), Newpol PE-68(PE-68), Na₂CO₃, tetrasodium pyrophosphate(TSPP), Demol C 및 MJU-100A를 블렌딩하여 알칼리탈지제(DA)를 제조하였다. 철강 시료편에 DA를 처리하여 탈지력을 시험해 본 결과 DA-6(PEH-6 45g/PE-68 45g/Na₂CO₃ 120g/TSPP 60g/Demol C 15g/MJU-100A 15g/Water 300g mixture)의 농도 4wt%일 때 70℃와 90℃에서의 프레스방청유 부착물에 대한 탈지율은 각각 94%와 96%였고, 70℃에서의 소입유 부착물에 대한 탈지율은 94%로 나타나 DA-6은 양호한 탈지력을 보여주었다. 또한 DA-6 농도 6wt%, 60℃에서의 Ross & Miles법에 의한 기포력 측정결과, 조작 1분 후의 포고가 8㎜와 77㎜로 각각 나타나 DA-6은 양호한 저기포성 탈지제임이 입증되었다. Alkaline degreasing agent(DA) was prepared by blending of POE(6)-2-ethylhexyl ether(PEH-6), Newpol PE-68(PE-68), Na₂CO₃, tetrasodium pyrophosphate(TSPP), Demol C, and MJU-100A. The degreasing power of DA`s was tested with steel specimens and the results are the following : A solution of 4wt% DA-6(PEH-6 45g/PE-68 45g/Na₂CO₃ 120g/TSPP 60g/Demol C 15g/MJU-100A 15g/Water 300g mixture) shows 94% and 96% of degreasing power for press-rust preventing oil at 70℃ and 90℃ respectively, and 94% for quenching oil at 70℃. The test results show that DA-6 was a better degreasing agent. Foam heights measured after lminute by Rose & Miles method and Rose & Clark method at 6wt%, 60℃ were 8㎜ and 77㎜, respectively. As the result, DA-6 was proven to be a goad, low-foaming, degreasing agent.
박홍수,배장순,김성길 ( Hong Soo Park,Jang Soon Bea,Seong Kil Kim ) 한국유화학회 1995 한국응용과학기술학회지 Vol.12 No.2
Spin finish(SF) for nylon filament was prepared. The influence on the properties of filament obtained by treating the prepared spin finish in this study(SF-2) and foreign-made spin finish(Spinnar N-100) was compared. SF-2 prepared by blending of spindle oil 70g, paraffin wax 1-g, glyceryl mono-oleate 5g, POE(6) nonylphenyl ether 4g, POE(10) nonylphenyl ether4g, POE(10) octylphenyl ether 2g, POE(14) mono-oleate 4g and water 1g was excellent in its characteristics. Some of the properties of Nylon finament treated with SF-2 were better than those treated with Spinnar N-100. Also, optimal physical conditions of nylon filament according to the number of revolution of oil roller were obtained at conditions of 5rpm of number of revolution oil roller, 1.25% of SF-2 oil pick up, and denier 69D.
박홍수,박석환,Park, Hong Soo,Park, Suk Whan 대한자원환경지질학회 1989 자원환경지질 Vol.22 No.2
In order to make economic and geological evaluation of coal in Korea, proximate and ultimate analyses were carried out as well as coal petrological studies such as maceral analyses, vitrinite reflectance and sporinite fluorescence measurement. The coeffcient of correlation between each factor of both conventional utilization and coal petrological parameters were studied as in Table 5 and 6. Their conclusions were as follow: (1) for anthracite, the good parameters of coal rank are mean vitrinite reflectance, carbon content, hydrogen content and H/C atomic ratio: (2) for brown coal and sub-bituminous coal, the good parameters of coal rank are carbon content, calorific value, moisture content, hydrogen content, oxygen content and O/C atomic ratio as well as vitrinite reflectance and sporinite fluorescence. An attempt is made to infer the coalforming environment by utilization of coal petrological analyses and to make comparison of coal analyses with proximate and ultimate analyses throughout the island arc region including Japan, Philippine and Indonesia and continental region including USA, Canada and Australia. As a result, meceral composition of Paleozoic and Mesozoic anthracite are similar to that of the Paleozoic continental coals, which were formed under dry conditions or low water table, but the coalification degree suddenly increased during Daebo orogeny (middle Jurassic to lower Cretaceous). The Tertiary coal resembles those of Tertiary island arc region coal characterized by higher calorific value, volatile matter content and H/C atomic ratio and by the formation of coal under wet conditions or higher water table.