共查询到18条相似文献,搜索用时 234 毫秒
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研究了两种可溶性盐在芦苇纤维的细胞腔内相遇生成难溶盐并沉积在细胞腔内的一种新的加填技术。 相似文献
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利用高速搅拌的方法研究通过纹孔将填入芦苇纤维细胞腔的技术。实验分别选用沉淀硫酸钡和研磨天然碳酸钙两种填料,并加以分级处理使之超细化。填料在浮状态通过高速拌作用通过芦苇纤维的纹孔进入细胞腔。研究了影响加填的一些主要因素及加填后纸页的物理和光学性质。 相似文献
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细胞腔加填碳酸钙技术 总被引:3,自引:0,他引:3
沉淀碳酸钙(PCC)在漂白针叶木硫酸盐浆的细胞腔中的填充量每克纤维可达0.3g。在细胞腔填充的过程中用助留剂阳离子聚丙烯酰胺(CPAM)对纤维进行预处理,并使用较高的温度(75℃)。在温度和碱性条件的共同作用下,聚合物的官能团被水解使其变成阴离子。结果使用聚合物预处理的纤维与阳电性的PCC的静电吸引力增加。实验还研究了其他一些变量包括打浆作用及填料与纤维的质量比对细胞腔填充的影响。讨论了用细胞腔填充PCC的浆抄造的手抄片的性能及其在工业上的潜在用途。 相似文献
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细胞腔加填与细胞壁加填 总被引:3,自引:0,他引:3
介绍了细胞腔、细胞壁加填技术以及它们的研究与应用现状,并与传统直接加填.的方式进行了比较,显示出细胞腔加填技术及细胞壁加填技术的优越性。 相似文献
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马尾松纤维细胞腔加填的研究 总被引:3,自引:1,他引:3
以国内南方的马尾松纤维为原料,利用高速搅拌作用将二氧化钛粒子加填进入纤维细胞腔内,探讨了加填工艺参数及助剂阳离子聚丙烯酰胺(CPAM)的使用对加填的影响,用扫描电镜观察了加填前后纤维的横截面.结果表明:打浆后的浆料纤维不适用于细胞腔加填;混合搅拌30~45min、浆料浓度0.5%~2.0%时加填效果较好;增大填料浓度能提高加填量;使用CPAM能提高加填量,其使用量0.05%~0.4%时效果较好;电镜观察显示加填后填料粒子很好地留着在细胞腔内. 相似文献
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硫酸钡在纤维细胞腔中的加填 总被引:1,自引:0,他引:1
目前国内外造纸厂中广泛使用填料,加入填料一般具有三个主要作用:改变纸张光学性质;改进纸张物理和印刷性能;降低成本。然而由于填料的加入会使纸张的强度有所降低,同时影响施胶的效果,因此国外一直在探索纤维的细胞腔加填。因为在未干燥的植物纤维内部存在大量的空隙,平均每克浆(绝干)约含1.5mL的空隙体积,细胞腔加填由于填料物质是加入到纤维的细胞腔内,而不留存于纤维的表面,故在满足使用填料的三个主要作用的前提下,通过不阻碍纤维间的结合,从而降低纸张的强度损失,鉴于目前中、碱性抄纸的发展,本文拟对硫酸钡在纤维细胞腔中的加填工艺作一初步探索。 相似文献
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Oil Spill Cleanup by Hydrophobic Natural Fibers 总被引:1,自引:0,他引:1
This article evaluates and compares on oil wetting and sorption performance of three natural fiber assemblies made by kapok, cattail and cotton fibers in application of absorbing vegetable oil. The three fibers were naturally hydrophobic and oleophilic. The water stood on the fibers’ surfaces with the contact angles between 120° and 145°, while oil droplet disappeared quickly from the fibers’ surfaces within several seconds. When applied as the oil sorbents, it was found that the three fiber assemblies showed quick oil uptake. Among them, kapok fiber assembly showed exceptionally high oil sorption and retention capacity. The presence of big hollow lumens which contributed to 77 % of the fiber’s volume was the important reason for this. Cattail fiber was bamboo-shaped. The fiber was short (3–11 mm). However, the formation of numerous of bamboo-liked lumens between neighboring fibers in cattail fiber assembly contributed to it quick oil sorption and excellent oil retention capacity, despite of relatively low oil absorbency. Although faster oil spreading comparing to kapok fibers, cotton fibers showed much lower oil absorbency and retention capacity, due to its collapsed lumens which considerably reduced its available pores for oil sorption. 相似文献
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Nasmi Herlina Sari I.N.G. Wardana Yudy Surya Irawan Eko Siswanto 《Journal of Natural Fibers》2018,15(4):545-558
This paper focuses on the chemical, physical, and mechanical properties of corn husk fibers treated with different concentrations of NaOH (0.5%, 1%, 2%, 5%, and 8%) for 2 h. The results show that treatment with NaOH removed the hemicellulose and lignin in the fibers and decreased the moisture content. Consequently, the chemical, physical, and mechanical properties of the treated fibers were greatly improved. Scanning electron microscopy analysis indicated the presence of rough surfaces and a number of lumens inside the fiber bundles. The results suggest that the treated corn husk fibers exhibited better mechanical properties than fiberglass. 相似文献
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非木浆OQP漂白及其与CEH漂白的比较 总被引:6,自引:1,他引:6
进行了芦苇、麦草和蔗渣烧碱-蒽醌法纸浆OQP漂白的研究,并与常规的CEH漂白结果作了比较。研究结果表明,3种非木材纸浆经OQP和CEH流程漂白,白度均可达到80%ISO以上。与CEH漂白浆相比,OQP漂白浆的白度略低,但白度稳定性较好,粘度和强度较高,而且0段废液可送至碱回收系统进行回收,QP漂白废水的污染负荷比CEH漂白废水的污染负荷低得多。 相似文献