新型复配漆蜡的加氢工艺及性能研究

Hydrogenation and properties of a novel compound lacquer wax

针对漆蜡的加氢工艺和复配漆蜡的复配加氢工艺进行研究。结果表明,在钯碳催化剂用量0. 5%、氢气压力0. 3 MPa、反应时间2 h、反应温度150℃、转速500 r/min的条件下,加氢后漆蜡中硬脂酸相对含量提高到23. 89%,熔点由49. 6℃上升到50. 9～52. 6℃。在相同的加氢条件下,将加氢后的漆蜡与LH蜡(精制乌桕蜡)按复配比1∶1进行复配加氢,得到硬脂酸含量为17. 48%的新型复配漆蜡,接近日本精制白蜡中硬脂酸含量17. 60%。由于LH蜡的市场价格远低于漆蜡的市场价格,能够降低生产成本,因而这种新型复配漆蜡有很好的发展前景和市场竞争力。

The hydrogenation process of lacquer wax and compound lacquer wax were studied. The results showed that the optimal hydrogenation conditions were obtained as follows: dosage of catalyst palladium carbon 0. 5%,hydrogen pressure 0. 3 MPa,reaction time 2 h,reaction temperature 150 ℃ and stirring speed 500 r/min. Under these conditions,the relative content of stearic acid of hydrogenated lacquer wax reached 23. 89%,and the melting point increased from 49. 6 ℃ to 50. 9-52. 6 ℃. The hydrogenated lacquer wax and LH wax( refined sapium wax) were compounded in the ratio of 1∶ 1 and hydrogenated under the same hydrogenation conditions,and the relative content of stearic acid in the novel compound lacquer wax was 17. 48%,which was close to 17. 60% of the Japanese wax. Considering that the price of LH wax was cheaper than that of lacquer wax,the compound wax had great development prospect and competitive in the market.