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양재건,한정련 한국섬유공학회 1985 한국섬유공학회지 Vol.22 No.5
Polydimethylsilane(PS) was synthesized by the reaction of dimethyldichlorosilane with potassium and sodium alloy(50:50) in the cosolvent of xylene and THF(8:2) for 16hrs at final temp. 13$0^{\circ}C$, the yield was 83%. But the yield was increased to 92% when 0.04% naphthalene of K-Naalloy was added to the reaction mixture. Polycarbosilane(PCS) was prepared by pyrolysis of polydimethylsilane and the yield was 34-36% when reaction was carried out at 320-45$0^{\circ}C$ under nitrogen atmosphare without catalyst, but the yield was increased to 62-67% when 0.5-1% of borosilane was added as catalyst. They were identified by means of IR, UV. NMR. and elemental analysis and the molecular weight was determined by GPC.
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%.