【摘要】 选用六水合哌嗪为母体,二氯甲烷为溶剂,三乙胺为缚酸剂,正己胺、十二胺、氯乙酰氯为原料,合成新型可生物降解润滑油添加剂1,4-双(二硫代甲酸乙酰正己胺)哌嗪和1,4-双(二硫代甲酸乙酰十二胺)哌嗪;采用FT-IR,1 H NMR,TG手段对合成产物进行结构表征及对产品热稳定性进行测试。以菜籽油为基础油,采用四球摩擦磨损试验机考察合成添加剂的抗磨性能,并对其进行可生物降解性测定。结果表明:合成产品与预测结构相同,热分解温度最低为305℃,与菜籽油的溶解度(质量分数)高达2.58%,1,4-双(二硫代甲酸乙酰十二胺)哌嗪具有较好的抗磨性能,1,4-双(二硫代甲酸乙酰正己胺)哌嗪具有较好的减摩性能,两者均具有优异的可生物降解性能(BDI大于80%)。更多还原

【Abstract】 In order to reduce the environmental pollution caused by oil,new biodegradable lubricating oil additives 1,4-bis(dithiocarbamoyl-n-hexylamine)piperazine(NP)and 1,4-bis(dithiocarbamate)piperazine(DP)were synthesized with piperazine(PP)as a precursor,dichloromethane as solvent,triethylamine as acid binding agent,n-hexylamine,dodecylamine and chloroacetyl chloride as raw materials.The structures and thermal stability of products were characterized by FT-IR,1 H NMR and TG techniques.Using rapeseed oil as lubricating base oil,the anti-wear performance and biodegradabilities,BDI index of additives were tested.The results showed that the thermal decomposition temperature is 305℃,and the solubility in rapeseed oil is better(up to 2.58%).The anti-wear performance of DP is better than NP,while the anti-friction performance of NP is better than DP.Both NP and DP have excellent biodegradability(BDI>80%).更多还原