Characteristics Analysis and Chemi-Mechanical Pulping Properties of Several Fast-Growing Hardwoods

The characteristics of several fast-growing hardwoods and their CMP pulping properties were studied.The dif-ferent physical and chemical properties of three eucalyptuses and one triploid Chinese white poplar were analyzed.Further,the chemi-mechanical pulps of different kinds of fast-growing hardwoods were made under three different chemical pretreat-ments.The results show that with the increase in the amount of chemical pretreatmentt,he refining energy consumption re-ducedt,he pulp yield decreasedt,he content of fiber shieves decreasedt,he pulp fiber content in long-fiber fractions increased and the physical properties of the sheet has significantly improveds,uch as bulk,burst indext,ensile index,elongation and TEA.In the three eucalyptusest,he eucalyptus DH3229 has a relatively better pulping and papermaking performance.