以油脂、仨I 油、己— 酸和1,6-己二胺等为主要原料,采用脂肪酸溶剂法和酰胺化改性,合成出了能够用于汽牟防锈底漆的韧性酰胺蜡。结果表明其最佳合成工艺条件为:酯化温度20WC,酯化时间3 h;酰胺化温度19WC,酰胺化时间3 h;反应物最佳配比为油脂质量分数10% ,m(己二二胺实际添加量):m(己■ 胺理论添加量)=1:1。在该工艺条件下产品滴熔点人于100~C,酸值与胺值均小于l0 mg(KOH)/g,蜡膜明度大于8O,表面平整细密,反复弯折不脱落、不断裂,达到『汽车防锈底漆的性能要求。 关键词:防锈底漆;蜡;蓖麻油;桐油;酰胺化 中圈分类号:TQ645 93 文献标识码:A 文章编号:0253—4320(2011)08—0060—03 Synthesis of a new type wax as car anti—rust primer ZHANG Jian—yuh.MENG Guo-pingI.FENG Yue—yue。 (1.School of Resource and Environmental Engineering,East China University of Science and Technology, Shanghai 200237,China;2.Shanghai Joule Wax Indust~ Co.,Ltd.,Shanghai 200434,China) Abstract:A new type of amide wax is synthesized by fatty—acid—solvent and amidation methods using oil,glycerin,adipic aeid and 1,6-hexanediamine as raw materials,which can be used as as car anti—rust primer.The results show that,the optimal reaction condition is shown as follows:200~C of esterifieation temperature,3 hours of esterification time,190~C of amidation temperature,3 hours of amidation time,10 wt% of oil content in monoacid,1:1 of m(actual adipicamine):m(theoretical adipic amine).Under the optimal reaction condition,the dropping point of wax is more thanlOHD℃ .The amine value and acid value are less than 10 mg(KOH)/g.The film lightness L is more than 80.The wax surface is dense and smooth.And the Wax fihn can not fall of and break after repeatedly kinking.It meets with theperformance requirements of automotive anti—rust primer. Key words:anti—rust primer;Wax ;castor oil;tung oil;amidation