摘要
以制革废弃牛油为原材料,对其先后进行理化性能检测、脱色脱臭、酰胺化、酯化和亚硫酸化反应并制得亚硫酸化加脂剂。结果表明,制革废弃牛油酸值为45 mg KOH/g,皂化值为207 mg KOH/g;采用10%双氧水、6%活性白土对其脱色脱臭,效果最佳。采用n(乙醇胺)/n(牛油)为4∶1且1.5%的甲酸钠催化下,在130~140℃反应2 h后,油脂的酸值和羟值分别为15~30 mg KOH/g和约280 mg KOH/g。在亚硫酸化改性反应中,当偏重亚硫酸钠的最佳用量为20%时,该加脂剂为浅黄色且具有良好的乳液稳定性,加脂后的绵羊皮服装革柔软。
Acting waste tallow from tannery as raw material, determination of its physical and chemical properties, decolorization and deodorization, amidation, esterification and sulfitation were done successively. Results showed that the acid value, the saponification value of the waste beef tallow was 45 mgKOH/g, 207 mgKOH/g respectively. When 10% hydrogen peroxide and 6%activated clay were successively used to decolorization and deodorization, the best effect was obtained.When n(ethanolamine)∶n(Waste beef tallow)was 4∶1,the reaction temperature and the reaction time was 130~140℃, 2 hrs respectively by 1.5% sodium formate as a catalyst, the acid value and hydroxyl value of the treated beef tallow was 15~30 mg KOH/g, about 280 mg KOH/g respectively.When the optimum dosage of sodium pyrosulfite was 20%, the fat-liquor obtained had light yellow and good stability. The sheepskin garment leather fatliquored with the sulfated fat-liquor is very soft.
引文
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