THE INFLUENCE OF SURFACTANT UNDER NEUTRAL REPULPING CONDITION ON DE-INKING EFFECT OF WATER-BASED INK
The influence of surfactant, repulping time and temperature under neutral condition (without NaOH) on de-inking effect of water-based ink was discussed in this paper. Results showed that the best repulping process under neutral condition was as follows, temperature was 50℃, speed of repulper was 150r/min, repulping time was 25mins and repulping concentration was 20％. Under these conditions the research on surfactant was investigated. Results indicated that the de-inking effect with cationic surfactant alone was better than that with anionic surfactant and non-ionic surfactant. Moreover the best dosage of cationic surfactant was 0.6％. In addition the de-inking effect with anionic surfactant was better than that with non-ionic surfactant. The whiteness was increased by 7~9％ISO with non-ionic surfactant and anionic surfactant. However the whiteness was just increased by 3~5％ISO with non-ionic surfactant and cationic surfactant. When the dosage of sodium silicate was 3％ and surfactant was used at the same time, and the whiteness can be increased by 2~6％ISO.
water-based ink surfactant neutral de-inking
Yang Yang Sun Guangwei Yang Runan Zhang Jian Han Ying
Liaoning Key Laboratory of Pulp and Paper Engineering, Dalian Polytechnic University, Dalian,116034, China
国际会议
广州
英文
858-861
2010-11-08（万方平台首次上网日期，不代表论文的发表时间）