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P-phenylene-Bis-Dimethyl Silanol의 合成과 物性에 관한 硏究
梁在乾 단국대학교 1983 論文集 Vol.17 No.-
p-phenylene-bis-dimethyl silanol prepared from p-phenylene-bis-dimethyl chlorosilane which was synthesized from p-dibromo benzene and dimethyl dichorosilane. The polydiethyl siloxane was prepared from diethyldichloro silane with common method(Andrianov. K.A) The copolymer was synthesized through the copolymerization of p-phenylene-bis-dimethyl silanol and polydimethyl siloxane which has molecular weight 900―1,000 under the catalyse of tetramethyl guanidine-di-2-ethyl hexoate at 100―110℃ for 7-hours. Thermal properties of the copolymer which prepared this research was measured by thermgravimetric analysis more higher degradation temperature 370℃ than common siloxane resine which degradation at 260―300℃.
Silicone처리 纖維에 관한 硏究 : 水酸基를 갖고 있는 纖維의 개질을 중심으로
梁在乾,韓貞璉,姜斗煥 단국대학교 1980 論文集 Vol.14 No.-
The reactivity of hydroxyl group on PVA film, cotton, and silk with alkoxysilane and acetoxysilane was investigated. The reactivity of hydroxyl group on PVA film was increased in the order of Q_m>T_m>D_m and Q_a>T_a>D_a, and the complex treating agents such as D_m/T_m, D_m/O_m, D_a/T_a, D_a/Q_a to cotton and silk fabrics had superior effect to the simple one, such as D_m, T_m, Q_m, D_a, T_a, Q_a. Silicone contents per square centimeter of sample which has water repellency was 0.1㎎ above in PVA film, and 0.2㎎ above in the fabrics. The reaction was completly carried out under the 150∼170℃.
梁在乾,韓貞璉,姜斗煥 단국대학교 1978 論文集 Vol.12 No.-
Methyl chloride was synthesized by using the continuous circulation reactor which developed in the Institute of Organo Silicone Compound (ofDAN Kook University), Especially, the experiment was carried out to increase the yield of dimethyl dichloro silane. Metalic silicon crushed to 100 mesh, copper powder <200∼200mech> as catalyst, and, Ni, pb, Mn, Zn, Ca, Al, as auxiliary were mixed, and the amount of catalyst was used 10∼20% in comparison to the metalic silicon. Methyl chloride preheated to 260℃ was supplied to the bottom of the reactor after dried. completely The temperature of the reaction was controlled to 300±10℃ and the pressure in the reactor was 1∼2atm. The yield of dimethyl dichloro silane was good, when the 1st conversion of methyl chloride was less than 58%, and the small amount of the group Ⅰ.Ⅱ. element as auxiliary catalyst was added. The yield of the dimethyl dichloro sllane experimented by the condition was 83%.
Siloxane-Epoxy(s) Copolymer合成에 관한 硏究
梁在乾,韓貞璉,裵長淳 단국대학교 1981 論文集 Vol.15 No.-
Oligosiloxane prepared which has moleculae weight 900∼1,000 was prepared from O.M.C.S. and epoxy(S) resine was prepared from pisphenol(S) and epichlorohydrin. The siloxane-epoxy(S) copolymer was synthesized through the copolymerization of oligosiloxane and epoxy(S) resine under alkaline acetone solution at 50∼55℃ for 5 hours. Thermal properties of epoxy(S) resine and siloxane-epoxy(S) copolymer was measured by thermogravimetric analysis, copolymer with 8.2% silicon content had the higher degradation temperature 300℃ than epoxy(S) reine which degradation at 250℃.