抑制杉木BCTMP光致返黄的研究  

Study on Inhibition of Light-induced Yellowing of BCTMP

作　　者：孙世琼[1] 陈港[1] 黄丽[1] 

机构地区：[1]华南理工大学制浆造纸工程国家重点实验室,广东广州510640

出　　处：《中国造纸》2008年第7期1-5,共5页China Pulp & Paper

摘　　要：使用2,2,6,6-四甲基哌啶氮氧自由基和紫外吸收剂作为返黄抑制剂添加到杉木BCTMP中,探讨不同配比对抑制杉木BCTMP返黄的效果。实验表明,使用2,2,6,6-四甲基哌啶氮氧自由基具有一定的抑制光致返黄的效果,较佳用量为0.7%(对绝干浆);紫外吸收剂UV-P具有比其他紫外吸收剂更好的抑黄效果,较佳用量为1.5%;UV-9与2,2,6,6-四甲基哌啶氮氧自由基配合使用具有较佳的抑黄效果,较佳用量分别为1.5%、0.7%。4-hydroxy-2,2,6,6-tetramethylpiperidine-l-oxyl（TMHPO-） and ultraviolet absorbers （UVAs） were added into the fir BCTMP in this experiment, the effect of inhibiting light-induced yellowing of BCTMP in different dosage and combination of the chemicals was investgated. TMHPO. showed the effect of inhibiting yellowing with the optimal dosage of 0.7%（on OD pulp）; Comparing the ultraviolet absorbers the inhibiting effect of UV-P was better than other UVAs, its optimal dosage was 1.5%; The combination of UV-9 and TMHPO. showed better inhibiting effect with the optimal dosages of 1.5% and 0.7% respectively.

关 键 词：BCTMP 光诱导返黄 PC值 紫外吸收剂 

分 类 号：TS721[轻工技术与工程—制浆造纸工程]