查询词典 kraft pulp

In this work, cationic kraft pulp was prepared by grafting copolymerization using acrylamide and cationic monomer ［2- ethyl］ trimethyl-ammonium chloride.

实验结果表明，当引发剂硝酸铈铵的用量从2%提高到8%时，纸浆的接枝率和阳离子表面电荷密度稳步提高；进一步提高引发剂的用量，纸浆的接枝率和阳离子表面电荷密度变化平坦。

In this paper the surface charge density of cationic kraft pulp was chosen as response variable and the preparation conditions of cationic kraft pulp by the in-situ grafting copolymeration of acrylamide and cationic monomer, [2- ethyl] trimethyl-ammonium chloride were optimized by central composite design.

摘 要：以阳离子硫酸盐浆的表面电荷密度为评价指标，采用中心复合设计法对丙烯酰胺和甲基丙烯酰氧基乙基三甲基氯化铵接枝共聚制备阳离子硫酸盐浆的工艺进行了优化。

The influence of kraft pulp consistency on the reflecting spectrum was studied in detail.

就硫酸盐纸浆浓度对纸浆反射光谱的影响进行了研究。

The aim of this study was to determine the influence of different bleaching sequences on the fibre surface properties of softwood kraft pulp before and after ageing.

主要目的是确定不同的漂白方法对硫酸盐针叶木浆纤维表面特性的影响，包括老化前和老化后。

Appropriate rare earth complex was introduced to protect carbohydrates from degradation in oxygen bleaching of unbleached kraft pulp .

硫酸盐木浆氧漂处理中，加入适量的稀土络合物助剂，能起到保护碳水化合物的作用。

Strength properties and bleachability of kraft pulps from E. Globulus, either RDH kraft pulp or conventional kraft pulp, are very well.

兰桉的RDH硫酸盐浆和常规硫酸盐浆都具有较高的强度和较好的可漂性能。

In addition, oxygen delignification and reinforcedoxygen-delignification of RDH kraft pulp and conventional kraft pulp, effects of various pretreatment methods on oxygen delignification efficiency, bleachability of RDH pulps and conventional kraft pulps and improved hydrogen peroxide bleaching with additives were also researched.

此外，论文还对桉木常规硫酸盐浆和RDH硫酸盐浆的氧脱木素、强化的氧脱木素、各种预处理方法对氧脱木素效果的影响以及它们各自的漂白性能进行了研究；对桉木硫酸盐浆的H〓O〓漂白时，各种助剂对H〓O〓漂段的改善效果进行了有关的研究和探讨。

Effect of chlorine dioxide pretreatment on oxygen delignification of RDH kraft pulp from eucalyptus was studied in the paper.

研究了 ClO2预处理对桉木RDH硫酸盐浆氧脱木素的影响。

The characteristic of masson ping kraft pulp's single oxygen delignification were studied.

研究了马尾松硫酸盐浆单段氧脱木素的特性。

The residual lignins extracted from both the original and oxygen-delignified softwood kraft pulp and those isolated from the effluent of oxygen delignification were subjected to pyrolysis in the presence of tetramethylammonium hydroxide.

从针叶木硫酸盐原浆、氧漂浆以及氧漂后的废液中分离出残余木素，在四甲基氢氧化铵存在下，采用裂解气相色谱-质谱联用的方法研究了氧漂过程中木素分子结构的变化。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。