松香酸改性对苯型不饱和聚酯树脂的研制  

Preparation of Rosin Acid Modified lerephthalic Unsaturated Polyester Resin

作　　者：齐双春[1] 邢广恩[1] 

机构地区：[1]衡水学院化学系,河北衡水053000

出　　处：《中国塑料》2005年第9期61-63,共3页China Plastics

摘　　要：探讨了松香酸改性对苯型不饱和聚酯树脂的合成方法。在反应温度230-240℃条件下,将对苯二甲酸用二元醇酯化,酸值降到19±2 mgKOH/g时,投入顺酐,继续进行酯化反应;酸值降到60±2 mgKOH/g时,投入松香酸,在190-200℃的条件下,进行封端反应;酸值再次降到60±2 mgKOH／g时,升温并抽真空直到反应完全。松香酸的含量影响对苯型不饱和聚酯与苯乙烯的相容性和活性。与双环戊二烯改性的对苯型树脂相比,松香酸改性的对苯型树脂活性高;与通用型树脂相比,松香酸改性的对苯型树脂力学性能好,耐热和耐腐蚀性强。Synthetic method of rosin acid modified terephthalic unsaturated polyester resin （TUPR） was studied. The optimal reaction temperature was 230-240℃. Terephthalic acid was reacted with glycols. When the acid value reduced to 19 ± 2 mg KOH/g, maleic anhydride was introduced and rosin acid was added as the acid value reduced to 60 ± 2 mg KOH/g. The terminating hydroxy groups were allowed to esterify at 190-200℃. The solubility and reactivity of TUPR were improved by rosin acid. Its reactivity with styrene was higher than dicyclopentadiene modified counterpart, the mechanical properties, thermal and chemical resistances were better than unmodified ones.

关 键 词：松香酸 对苯型不饱和聚酯 合成方法 耐腐蚀性 力学性能 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]