细小组分对玉米秸秆高得率浆性能和湿部化学品使用效果影响

Effect of Fines Removal of Corn Stalk High Yield Pulp on Pulp Properties and Wet-end Chemicals Using

中文关键词:  玉米秸秆  高得率浆  细小组分  纸浆性能  造纸湿部  化学品

Key Words:corn stalk  high yield pulp  fines  pulp properties  papermaking wet end  chemicals

中文摘要:

      研究了环境友好水热处理法制备的玉米秸秆高得率浆中细小组分筛除对纸浆性能和湿部化学品使用效果的影响。结果表明，玉米秸秆高得率浆中杂细胞多，细小组分含量高达62.1%，纸浆中细小组分筛除会影响纸浆脱水性能和强度性能，随着细小组分筛除率的增大，纸浆打浆度逐渐下降，各种强度指标呈先提高后降低的趋势。当细小组分筛除率为17.8%时，纸浆强度性能最佳；进一步筛除细小组分，纸浆保水值和强度性能均逐渐降低。玉米秸秆高得率浆中细小组分对施胶剂AKD、湿强剂PAE和防油剂等造纸湿部化学品使用效果的影响也较大，适量地筛除细小组分可不同程度地提高成纸的防水性、湿强度和防油性。因此，细小组分筛除是提高玉米秸秆高得率浆性能和拓宽其用途的有效途径。

Abstract:

      The effects of fines removal in corn stalk high yield pulp prepared by environment-friendly hydrothermal treatment on pulp properties and papermaking wet-end chemicals using were studied. The results showed that there were abundant parenchyma cells in the pulp and the content of fines was as high as 62.1%. Pulp dewatering performance and strength properties were affected by the fines removal in pulp. With the increase in fines removal rate， pulp beating degree gradually declined， strength properties increased first and then decreased. When the fines removal rate was 17.8%， pulp strength properties were the highest； however， water retention value and strength properties of the pulp gradually decreased with further fines removal. The fines of corn stalk high yield pulp also had a great impact on the using effect of papermaking wet-end chemicals such as sizing agent AKD， wet strength agent PAE， and oil repellent. Appropriate removal of fines could improve the waterproof performance， wet strength， and oil repellency of paper to varying degrees. Therefore， fines removal is an effective way to improve the performance of corn stalk high yield pulp and expand its use.