不同制样方法对废纸脱墨浆光学性能的影响

The Effect of Sample Sheet Preparing Methods on DIP Optical Properties Measurement

关键词:  废纸浆  制样方法  ERIC  光学性能

Key Words:ONP pulp  sample sheet preparing methods  ERIC  optical property

摘要:以不同废纸浆及其经浮选和充分洗涤后的脱墨浆为原料,采用纸页成形器(垫布与无垫布)和布氏漏斗成形的制样方法制备不同的浆片,通过分析浆片的灰分含量、光散射系数、有效残余油墨浓度（ERIC）及白度,研究了不同制样方法对废纸脱墨浆光学性能的影响。结果表明,碎解浆和浮选脱墨浆经纸页成形器（无垫布）成形的浆片灰分含量较布氏漏斗成形的浆片灰分含量低55%以上；两种纸页成形器成形的浆片光散射系数相差不大；欧洲旧报纸（E-ONP）碎解浆中的油墨含量最高,纸页成形器（无垫布）与布氏漏斗成形的浆片之间的ERIC相差最大,达508.4 mg/kg,国产旧报纸（L-ONP）的充分洗涤浆中的油墨含量最低,纸页成形器与布氏漏斗成形的浆片之间的ERIC差值为40.8 mg/kg；同一浆料经布氏漏斗、纸页成形器(垫布)、纸页成形器（无垫布）成形的浆片白度依次升高。

Abstract:The various ONP pulp and their deinked pulp after flotation and washing were used as materials to prepare the sheets by laboratory sheet former (whether cover a cloth or not) and Buchner funnel respectively. And the optical properties of the sheets were analyzed, and the effects of sample sheet preparing methods on optical property determination were evaluated. The results showed that the sheet prepared in Buchner funnel with better retention of fillers, inks and other fine materials in the filter paper, it caused great difference of optical property comparing with other sample sheet preparing methods. While there were a little fillers, inks and fine materials in deinked pulp, the effect of sample sheet preparing methods on brightness and ERIC (Effective Residual Ink Concentration) determinate was not obvious. On the contrary, the pulp contained more fine materials and inks, there were obvious differences in brightness and ERIC of the sheets prepared by different methods, especially between the sheets prepared by laboratory sheet former and Buchner funnel.