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纤维碎片
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  “纤维碎片”译为未确定词的双语例句
    Reducing Shives Content in Nonwood Chemithermomechanical Pulp
    降低非木材CTMP浆中的纤维碎片含量
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    Observation to the fiber fines' physical shape is carried on. P200 mainly is the parenchyma cell and the late wood vessel element. P'_(200) mainly is the fragment of fibers produced in the beating process.
    对细小纤维的物理形态进行观察,P_(200)主要是薄壁细胞和晚材导管分子,P’_(200)主要是打浆过程中产生的纤维碎片
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This paper,with the purpose of studying the micro-structure of carbon fibers from fragments and longitudi-nal sections,discusses the methods of using an analytical TEM with high spherical aberration coefficient(e.g.Cs=3.0mm) when an ultra high resolution TEM is not available.The lattice -fringe images can be obtained byusing the tilted-beam and appropriate defocusing amount which is determined by the phase contrast transfer cur-ve.The 002 graphite layer plane space is about 0.34nm.The orientation of crystallite...

This paper,with the purpose of studying the micro-structure of carbon fibers from fragments and longitudi-nal sections,discusses the methods of using an analytical TEM with high spherical aberration coefficient(e.g.Cs=3.0mm) when an ultra high resolution TEM is not available.The lattice -fringe images can be obtained byusing the tilted-beam and appropriate defocusing amount which is determined by the phase contrast transfer cur-ve.The 002 graphite layer plane space is about 0.34nm.The orientation of crystallite is parallel to the fiber axisand the Young’s modulus is related to the heat-treament temperature.The graphite layer phanes of fiber withhigher heat-treatment temperature is better oriented than those of lower temperature specimen.

本文以研究碳纤维微细结构为目的,讨论了在不具备高分辨型透射电子显微镜的条件下,利用分析型透射电子显微镜拍摄碳纤维碎片和切片的晶格条纹像的方法和条件。采用倾斜电子束的方法,根据相应的相位衬度传递特性曲线,针对不同结构尺寸的碳纤维确定适当的离焦量,可拍摄出碳纤维的晶格条纹像。由碳纤维纵向切片的高分辨像和电子衍射花样可以看出,碳纤维的晶面间距约为0.34nm,纵向结构取向平行于纤维轴。碳纤维的模量随着热处理温度的升高而增加,其晶面间距减少,条纹变直、变长,趋于规整。

Low consistency refining at the second stage of P-RC APMP with the triploid of populus tomentosa was studied in this paper. Compared to high consistency refining, low consistency refining at the second stage was more efficient in reducing the shives content, getting a high light scattering coefficient, and producing a pulp with similar tensile, but lower tear index.

本文就三倍体毛白杨P-RC APMP二段低浓磨浆对浆料光学性能和强度性能的影响进行了初步研究,研究结果表明,二段低浓磨浆时所得浆料与高浓磨浆相比具有较少均纤维碎片和较高的光散射系数、相近的不透明度及抗张强度和稍低的撕裂指数。

The change of pulp properties and fiber characteristics during the refining in the P-RC APMP process was investigated in this paper. The results showed that increasing the beating degree could reduce the long- and middle- fiber fraction and increase fines fraction. At the same time, the average fiber length and fiber coarseness descended gradually, while the curl index, kink index of the fibers and softness of the fibers increased. The results from SEM observation illustrated that during the refining, with the...

The change of pulp properties and fiber characteristics during the refining in the P-RC APMP process was investigated in this paper. The results showed that increasing the beating degree could reduce the long- and middle- fiber fraction and increase fines fraction. At the same time, the average fiber length and fiber coarseness descended gradually, while the curl index, kink index of the fibers and softness of the fibers increased. The results from SEM observation illustrated that during the refining, with the defiberation and fibrillation, many fibers were cut, broken and split. The higher beating degree, the higher fiber fibrillation extent, softness and inter-fiber bonding ability the fiber had. With increasing of beating degree, the surface of handsheets became more smooth and the porosity on the paper surface reduced. The pulp strength properties developed with beating degree increasing, it was mainly ascribed to the fiber fibrillation.

对在P RCAPMP制浆中 ,磨浆程度对最终浆料及纤维特性的影响进行了探讨。通过对浆料纤维的筛分分析和纤维质量分析表明 ,在P RCAPMP制浆过程中 ,随着磨浆程度的增加 ,浆中长纤维组分含量下降 ,细小纤维含量增加 ,纤维粗度和纤维平均长度减小 ,同时纤维的卷曲和扭结程度有所增加 ,纤维的柔软度增加。SEM观察发现 ,随着磨浆的进行 ,纤维彼此分离并发生不同程度的细纤维化 ,同时伴随着纤维细胞壁的破损。提高磨浆程度 ,纤维细纤维化程度加强 ,所得纸页表面平滑 ,具有较少的空隙 ,纸页中具有较多的细小纤维和纤维碎片。增加磨浆程度 ,浆料强度提高 ,这是由于纤维细纤维化程度的提高及由此引起的纤维柔软度的增加而最终导致纤维结合力提高。

 
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