三倍体毛白杨常规APMP与P-RCAPMP的制浆研究

Comparison of Conventional APMP and P-RC APMP of a Hybrid Poplar

对三倍体毛白杨分别进行了常规APMP与P RCAPMP制浆的研究 ,通过对两种浆料性能的比较发现 ,在相同化学药品用量、相同化学药品分配、相近打浆度时 ,P RCAPMP具有较高的松厚度、白度、不透明度和光散射系数 ,而常规APMP具有较高的紧度和物理强度 ;纤维质量分析和纤维筛分分析表明 ,常规APMP具有较多的长纤维组分 ,较少的细小纤维组分和粗大纤维束 ,其纤维平均长度略长于P RCAPMP ,而两者的纤维卷曲指数和纤维扭结指数基本相同。

The comparisons of conventional APMP and P-RC APMP of a hybrid poplar, the triploid of populus tomentosa were investigated in this paper. The results showed that on the condition of the same chemicals distribution between the first pretreatment stage and the second stage, the same chemical charge and the similar beating degree, P-RC APMP, compared with conventional APMP, obtained higher brightness, bulk, opacity and light scatting coefficient, while conventional APMP had higher density and physical strength properties. Fiber quality analysis and fiber classification illustrated that conventional APMP, compared with P-RC APMP, owned more long fiber fraction, less fine fraction. Fiber average length of conventional APMP was longer than that of P-RC APMP. Both fiber curl index and fiber kink index of these two pulps were similar.