萜烯酚树脂性能研究

Abstract

由中国脂松节油和苯酚共缩聚得到的萜烯酚树脂的性能、结构。实验结果指出，萜烯酚树脂的密度碘值（I%）18%~20%，酚羟基值（OH%1.3%。软化点100.0~135.0℃的萜烯酚树脂，VPO测定的分子量为600~630。不同软化点树脂在稀浓度下表现等同的溶液粘度，较高浓度时，软化点高溶液粘度较大。根据对萜烯酚树脂性能和Ir的研究结果，讨论了树脂的可能形成机理。

t was Found that the terpene-phenolic resins prepared by Friedel-CraFt' s reaction of turpentineFrom Pinus massoniana with phenol possess 18%～20%iodine numbers(l numbers,I%)and 1.3%hydroxyl numbers(OH%).Molecular weights of the resins with softening point of 100.0～135.0℃are in the range of 600～630 according to VPO results.Viscosity of the resins in toluene varies in concen-trated solution with their softening points (high softening point terpene-phenolic resin with high viscosity)although the same viscosity was tested in dilute solutions.Para-substituted benzyl group are the mainstructure in the resins From IR spectroscopic data at v 850 cm￣(-1).The presence of twin-methyl groups at v1380～1365 em￣(-1) and aryl oxides 1270～1110 cm￣(-1) in the resin was also evidenced by the IR spectra,Thepossible reaction pathway in the resin Formation has been discussed.