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梁在乾,홍재진 단국대학교 1994 論文集 Vol.28 No.-
The trimethylol phenol(TMP) is synthesized by means of Freeman's method. The mole fraction of reaction mixture was phenol : formaldehyde : sodium hydroxide(1 : 3 : 1), the reaction condetion was at 30℃ for 40 hours and the yield was 80%. The siloxane barium hydroxide(SB) was obtained from the reaction of siloxane sodium salt(S_3) and barium chloride in the isopropyl alcohol at 80℃ for 4 hours. The mixture of TMP and SB was acidified with acetic acid and heated at 110℃. After 30 min. heating, the reaction mixture was turned into soluble corsslinked resin. The heating was continued up to 130∼170℃ and than insoluble TMP/SB copolymer was obtained. Based on the analysis of TGA and DSC analizer, this copolymer has the higher thermal stability than that of phenol resin. The copolymer was identified by IR and elementary analysis. As the concentration of Si was incerased, the elongation property of resin was increased. By checking the tensile strength and the elongation properties we have plans to apply industrial use.