食品罐用镀锡钢板的溶剂型脱漆剂的研制

Study on solvent-based paint stripper for food-can tinplate

制备了一种针对食品罐用镀锡钢板的溶剂型脱漆剂。采用单因素实验法研究了主溶剂复配比例及含量、十六烷基三甲基溴化铵含量及乳酸含量对脱除效率的影响，同时探讨了脱漆剂的挥发速率和腐蚀性。结果表明，当苯乙醇、无水乙醇、十六烷基三甲基澳化铵、乳酸质量分数分别为21％、49％、2％、28％，温度为80-85℃时，3～5min内可使漆膜软化、脱落，所得脱漆剂的脱漆效率最高，毒性、挥发性和腐蚀性低。

A solvent-based paint stripper for food-can tinplate is prepared. The effects of the ratio of the primary solvent mixture and its content, the content of hexadecyl trimethyl ammonium bromide（CTMAB） and the content of lactic acid on the removal efficiency are studied. The volatility and corrosion protection of paint stripper are also investigated. The results show that the paint film becomes soft and removes in 3 -5 rain using the paint stripper composed of 21 wt% of phenethyl alcohol,49wt% of ethanol,2 wt% of CTMAB and 28 wt% of lactic acid, at 80 -85℃. The paint stripper exhibits good stripping efficiency with low toxicity, low volatility and low corrosion.