三倍体毛白杨爆破浆的可漂性研究

该文主要研究三倍体毛白杨由 2 .0MPa以上爆破变为 1.0MPa爆破浆的可漂性 .用 1.0MPa爆破三倍体毛白杨做CEP ,其得率可达 90 %左右 .加入 4%的Na2 CO3,4%～ 12 %Na2 SO3 所得本色浆白度为 42 %～ 5 8% ,使白度有大幅度提高 .用过氧化氢常规漂白 ,一段漂 (2 %H2 O2 )白度可达 5 6 %～ 6 6 % ;二段漂白度可达 6 4%～ 75 % .浆料具有潜在的可漂性 ,使杨木爆破浆用作新闻纸和文化用纸成为可能 .同时也为正在大力推广并已大片成林的三倍体毛白杨的利用 ,开辟了极为广阔的市场 .

Bleachability of explosion pulp of triploid Populus tomentosa

The study is concentred on the bleachability of triploid clones of Populu tomentosa Carr.explosion pulp which was first exploded at 2.0 MPa,then at 1.0 MPa.When at 1.0 MPa,4% Na 2CO 3 and 4%～12% Na 2SO 3 were added into triploid clones of Populus tomentosa Carr., the brown stock's brightness is 42%～58%(ZBD),the yield rate is about 90%.After conventional bleaching at first stage (2% H 2O 2),the brightness can reach 56%～66%(ZBD),at second stage(2%H 2O 2) the brightness can reach 64%～75%(ZBD).The explosion pulp has great potentional bleachability and good properties for making newspaper and stationery paper.This study will bring new uses for tripoid clones of Populus tomentosa Carr.which have been planted in many areas.