一种非离子表面活性剂的合成及其对涂布纸的脱墨效果  

Study on the synthesis of a novel nonionic surfactant and its effect on deinking of coated paper

作　　者：丁希[1] 张昌辉[1] 游群杰 刘涛 马燕[1] 

机构地区：[1]陕西科技大学教育部轻化工助剂化学与技术重点实验室,陕西西安710021

出　　处：《日用化学工业》2017年第9期502-507,共6页China Surfactant Detergent & Cosmetics

摘　　要：以月桂醇聚氧乙烯醚(AEO)与异佛尔酮二异氰酸酯(IPDI)为原料,合成了一种新型的非离子表面活性剂AEOIPDI-AEO(AIA),并用于分离回收涂布纸。以白度和残余油墨量为指标,考察AIA的较佳合成条件。采用傅里叶红外光谱和核磁共振氢谱对产物的结构进行表征。将AIA与其他表面活性剂进行复配,考察复配脱墨剂的脱墨效果。结果表明,AIA的较佳合成条件为:n(AEO_7)∶n(IPDI)=2∶1,反应温度(60±2)℃,反应时间2 h,脱墨体系的p H=8。结构表征表明合成的产物为目标产物。相比于市售脱墨剂,AIA脱墨剂对涂布纸具有良好的脱墨效果,而对于新闻纸和打字纸,脱墨效果相差不大。将AIA与脂肪醇聚氧乙烯醚硫酸钠按质量比为1∶2进行复配,制得的复配脱墨剂对涂布纸的白度达71.9%,残余油墨量仅为58.5 mm^2/m^2;将AIA与壬基酚聚氧乙烯醚按质量比为1∶2进行复配,制得的复配脱墨剂对涂布纸的白度达71.3%,残余油墨量仅为61.4 mm^2/m^2。Using lauryl alcohol polyoxyethylene ether （AEO） and isophorone diisocyanate （IPDI） as raw materials, a novel nonionic surfactant AEO - IPDI - AEO （AIA） was synthesized and used for the deinking of recovered waste coated paper. The optimum conditions for synthesis of AIA were examined with whiteness and residual ink concentration as criteria. The structures of the products were characterized by FF - IR and H NMR. The AIA product was blended with other surfactants to examine the deinking effect of blend deinking agent. Results show that the better synthesis conditions of AIA are ： n （ AEO~ ） ： n （ IPDI ） = 2 ： 1 ; reaction temperature, （60 ：t： 2） ~C ;reaction time ,2 h. The deinking effect of deinking system achieves the best at pH = 8. The structural characterization shows that the synthesized product is the target product. Compared with commercial deinking agents, AIA deinking agent displays better deinking effect on coated paper; while for newsprint and typing paper,the deinking effect shows no difference. Test result for blend of AIA and sodium fatty alcohol polyoxyethylene ether sulfate according to the mass ratio of 1 ： 2 shows that the coated paper whiteness reaches 71.9% ,and the concentration of residual ink is only 58.5 mm^2/m^2. Similarly,test result for blend of AIA and nonylphenol polyoxyethylene ether at a mass ratio of 1 ： 2 shows that the coated paper whiteness reaches 71.3% ,and the concentration of residual ink is only 61.4 mm^2/m^2.

关 键 词：非离子表面活性剂 脱墨 涂布纸 白度 残余油墨量 

分 类 号：TQ423.2[化学工程]