橡胶技术网

合成橡胶工业
CHINA SYNTHETIC RUBBER INDUSTRY
2002 Vol.25 No.2 P.115

 橡胶技术网

丁腈橡胶接枝增韧酚醛树脂的研究

Study of phenolic resin toughened by grafting with NBR

李晓林　 李新明　 张洋　 吴大鸣　

摘　要：在苯酚与甲醛聚合体系中加入NBR，证明NBR与酚醛树脂发生了接枝反应。研究了NBR用量对树脂冲击强度、软化点和凝胶时间的影响。结果表明，仅加入2％的NBR，就可使酚醛树脂的冲击强度提高100％以上，当继续增加其用量，冲击强度进一步提高.
关键词：酚醛树脂;丁腈橡胶接枝聚合;增韧
分类号：TQ33　文献标识码：B

　　With the extension of application field, the requirement for more toughness to phenolic resin increased. Traditionally, phenolic resin was modified by noyl phenol, cardanol, linseed oil when phenolic resin was synthesized, but the result was not satisfactory.In this work, a new additive NBR was added into the bulk polymerization system of phenol and formaldehyde by 1% , 2% , 3% ,5% respectively to increase the toughness of phenolic resin by graft copolymerization.At first, according to the recipe,phenol,formaldehyde,NBR and catalyst A were added into a 500 mL three- necked bottle altogether, reacted at 90 ℃ for 60 min. Second, catalyst B was put in , and the reaction was maintained at 90 ℃ for 60 min. At last when softening point reached 95 ℃ , the product was poured out dried in a vacuum.Subsequently, impact strength, gel time, infrared spectrum and DSC were measured.……
作者简介：Li Xiaolin,doctoral student.
　　　　　李晓林（北京化工大学塑料机械与塑料工程研究所，北京,100029）　
　　　　　李新明（北京化工大学材料科学与工程学院，北京,100029）　
　　　　　张洋（北京化工大学材料科学与工程学院，北京,100029）　
　　　　　吴大鸣（北京化工大学塑料机械与塑料工程研究所，北京,100029）　

参考文献：

［1］Hartshorn S R.Structural adhesive:Chemistry and technology[M]. New York:Plenum Press,1986.94
［2］Knop A,Pilate L A.Phenolic resin:Chemistry,application and performance,future direction[J].Springer- Verlag,1985,148


收稿日期：2001年12月21日

出版日期：2002年3月15日

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