EFFECT OF DIFFERENT HYP FRACTIONS ON THE STRENGTH PROPERTIES OF HYP-CONTAINING PAPER SHEETS
In recent years, hardwood high-yield pulp (HYP) has been found an increasing application in the production of value-added paper grades because of its own unique properties. However, compared with bleached chemical pulps, HYP usually has lower physical strength properties. In this study, the characteristics of poplar PRC-APMP fiber were determined by L&W fiber tester and the poplar PRC-APMP fiber was classified by Bauer-Mcnett into different fractions. Further, different HYP fractions were added into hardwood chemical pulp with different substitution ratios for handsheet making, and the effect of each HYP fraction on physical strength properties of HYP-containing paper sheets was investigated. The results show that the flexibility coefficient of HYP fiber is obviously higher than that of chemical pulp fiber, indicating that the HYP fiber is not as flexible as the chemical pulp fiber. Also, the HYP fraction of P50/R100 has the significant influence on the bulk, leading to the increment of bulk by 12.9％. The HYP fraction of P100/R200 can improve the strength properties obviously. The substitution of long fiber fractions can improve the light scattering coefficient, especially the fiber fraction of R30. However, the ISO brightness was impacted negatively by the substitution of HYP fractions, whatever the fraction is.
PRC-APMP fiber fraction bulk tensile strength light scattering coefficient
Hongjie Zhang Ming Lei Yue Wang Xiangyu Yao
1 Tianjin Key Laboratory of Pulp and Paper,Tianjin University of Science and Technology,Tianjin, 300 Tianjin Key Laboratory of Pulp and Paper,Tianjin University of Science and Technology,Tianjin, 30045 Tianjin Sub-Center,National Import & Export Commodity Classification Center,GAC, 300461, P. R. China
国际会议
International Mechanical Pulping Conference 2011(2011国际机械浆学术会议)
西安
英文
331-334
2011-06-26（万方平台首次上网日期，不代表论文的发表时间）