中文摘要：

研究了现代化大型脱墨浆及新闻纸生产线上的废纸在热分散后、后浮选后和成浆池处以及成品纸样浆料DCS水中黏性物质的化学组成。甲基叔丁基醚抽出物的GC-MS分析发现,黏性物质由合成黏合剂、木材抽出物、木质素降解产物和其他有机酸类组成。其中,合成黏合剂是抽出物的主要成分,约占黏性物质总量的62%-77%。约11%的呈胶体状态的黏性物质可以在后浮选中被去除。使用阳离子型造纸化学品可以减少浆水体系中部分黏性物质。只有少部分黏性物质附着在纸浆纤维上,70%以上的黏性物质仍留在白水循环系统中,或在造纸机设备机件上沉积。

英文摘要：

In this paper,sticky contaminants at the major points of a deinking pulping line for newsprint production were studied.Pulps were sampled from the heat-disperser,the post-flotation and the paper machine chest;meanwhile,the resultant paper sheets were also examined.GC-MS Analysis of MTBE（methyl tertbutyl ether） extractives of aqueous phases showed that contaminants are complicated,and they can be grouped as adhesives,wood extractives,lignin-derivatives and other organic acids.Adhesives are major components in the extractives and account for 62%~77%.About 11% contaminants,as colloidal substances,are removed through the post-flotation.Sticky contaminants in the pulp suspension can be reduced to some extent by adding cationic polymers.Over 70% of contaminants remain in the cycling white water system which may finally result in deposits in the paper machine,only part of the contaminants are carried over with the paper sheet.