思茅松硫酸盐浆粮食包装袋纸的打浆工艺研究

针对粮食包装袋的特殊要求,研究了思茅松硫酸盐浆抄造粮食包装袋纸的打浆工艺.实验结果表明,打浆时间和打浆浓度对纸张的抗张强度、抗张能量吸收、伸长率、耐破度等都有一定程度的影响;思茅松硫酸盐浆在打浆浓度为16%时利用PFI磨打浆5,min时所抄纸页可以满足粮食包装袋纸的性能要求.以20%与5%的浓度组合进行组合打浆,更可取得较好的纸张韧性发展,同时获得良好的纸张撕裂强度和透气度性能,所制粮食包装袋纸具有较好的使用性能.     

乙酰化改性亚麻二粗纤维的研究

探讨对亚麻二粗纤维进行乙酰化改性的工艺,通过乙酰化改性对亚麻二粗纤维物理机械性能产生影响,从而提高了亚麻纤维的性能和可纺性指标,以适应高支和满足生产高档亚麻针织物的要求。     

α海泡石制备卷烟滤嘴棒纸的初步研究

对α海泡石与植物纤维配抄卷烟滤嘴棒纸进行了初步研究.实验结果表明:α,海泡石与针叶木浆质量比为20∶80,针叶木浆打浆度为16,°SR,添加适量助剂,可以抄造35~40,g/m2的卷烟滤嘴棒纸,其强度和透气度指标均可满足技术要求.海泡石滤嘴棒纸能够降低焦油对人体健康的危害程度,提高卷烟档次,具有很大的发展前景.     

刊期说明

透明度是描画纸、复制纸、灯罩纸等纸的主要光学胜能指标。本文着重叙述纤维种类和纸浆的化学性质、打浆度、填料、助剂及纸淅抄造条件等对成纸透明度的影响。     

碱性离子液体提取后烟梗纤维形态及抄造性能的变化

以碱性离子液体[MMIM]DMP为溶剂,采用红外光谱和原料成分分析等手段研究再造烟叶原料烟梗经离子液体提取后表面形态、打浆及抄造性能的变化.结果表明:烟梗经碱性离子液体提取后,原料表皮组织出现少量的蜂窝状结构,纤维细胞间的填充物质明显减少,孔隙增加;烟梗中的芳香类物质及木质素能较好地溶于碱性离子液体中,原料中纤维素相对含量明显增加;脱除部分木质素后的烟梗原料打浆后纤维的分散程度较好,打浆性能明显改善,抗张强度可提高35%左右,抄造性能明显改善,松厚度和透气度指标得到了优化.     

纸的透明度影响因素

透明度是描画纸、复制纸、灯罩纸等纸的主要光学性能指标。本文着重叙述纤维种类和纸浆的化学性质、打浆度、填料、助剂及纸机抄造条件等对成纸透明度的影响。     

利用普通车床加工大型滚筒技术研究

我厂生产的联合梳麻机(LS-460型)是属亚麻纺织机械的专用产品.其主要功能是:对亚麻、胡麻、二粗等亚麻短纤维进行梳理除杂,并自动调匀整形成麻条,供后序纺织机械使用.其具有先进的电子控制系统,生产效率高、使用安全、性能可靠等特点.是新建亚麻纺织厂家的首选产品.     

数字式电能表的设计

本文以片上系统(SOPC)PL3105芯片为核心,设计了一种具有载波通信功能、应用于自动抄表系统的全数字式电能表。     

亚麻高科技综合开发利用途径与发展前景展望

亚麻（油用及油纤兼用亚麻俗称胡麻）是世界性的油料作物、纤维作物和经济作物，因此介绍亚麻综合开发利用途径，了解生产和加工对新品种的要求，认清形势，抢抓机遇，促进亚麻生产、加工、销售和亚麻产业化发展，是甘肃中部干旱贫固地区亚麻生产历史发展的必由之路。     

无线抄表系统低功耗控制电路的设计与实现

智能小区无线抄表系统可以提高燃气抄表系统的自动化程度,简化抄表流程,在我国还处于起步阶段.文章利用新型的单片机芯片及无线收发方式提出了全无线燃气抄表控制系统的方案,从低功耗角度自行设计了无线燃气表控制电路、软件编程和终端间无线网络协议及算法.系统性能稳定,各项指标符合要求.     

OPTIMIZING EUCALYPTUS PULP REFINING

This paper discusses the refining of bleached eucalyptus kraft pulp (BEKP).Pilot plant tests were carried out in to optimize the refining process and to identify the effects of refining variables on final paper quality and process costs.The following parameters are discussed: pulp consistency, disk pattern design, refiner speed,energy input, refiner configuration (parallel or serial)and refining intensity.The effects of refining on pulp fibers were evaluated against the pulp quality properties, such as physical strengths, bulk, opacity and porosity, as well as the interactions with papermaking process, such as paper machine runnability, paper breaks and refining control.The results showed that process optimization,considering pulp quality and refining costs, were obtained when eucalyptus pulp is refined under the lowest intensity and the highest pulp consistency possible. Changes on the operational refining conditions will have the highest impact on total energy requirements (costs) without any significant effect on final paper properties.It was also observed that classical ways to control the industrial operation, such as those based on drainage measurements, do not represent the best alternative to maximize the final paper properties neither the paper machine runability.     

甘蔗渣生物预处理机械法制浆的研究

进行了甘蔗渣生物机械法制浆的试验，探讨了生物预处理对磨浆能量消耗、纸张物理强度和光学性能的影响。白腐菌预处理和机械磨解相结合的甘蔗渣生物机械法制浆，具有降低磨浆能量消耗的效果。对比试验表明，生物预处理提高了纸浆的强度性能，尤其是抗张指数和撕裂指数，不透明度基本保持不变，白度明显降低，但白度的降低可以通过Ｈ２Ｏ２漂白处理得到恢复     

Effects of biological pre-treatment of pine chips on the beating performance of Kraft pulp

The Calabrien pine (Pinus brutia) wood chips prior to kraft pulping were biologically pre-treated with selected white-rot fungi (Ceriporiopsis subvermispora), which was recorded to be preferentially attacking the lignin component of the wood. The effects of this treatment on beating performance and physical strength of resultant papers were studied in detail. Bio-treated samples showed comparable and, in most cases, higher physico-mechanical properties than those obtained from untreated controls. Under the same beating conditions the bio-treated kraft pulp was noted to have the lower SR' indicating a lower degree of external fibrillation. The paper made from bio-treated kraft pulp has a higher density, tensile property, air permeability and swellability. Furthermore, remarkable energy savings up to 33 % were observed when beating bio-treated kraft pulp. This study contributes to a better understanding of the mechanisms taking place during bio-treatment and the modification processes of cell wall components.     

Effects of biological pre-treatment of pine chips on the beating performance of Kraft pulp

The Calabrien pine (Pinus brutia) wood chips prior to kraft pulping were biologically pre-treated with selected white-rot fungi (Ceriporiopsis subvermispora), which was recorded to be preferentially attacking the lignin component of the wood. The effects of this treatment on beating performance and physical strength of resultant papers were studied in detail. Bio-treated samples showed comparable and, in most cases, higher physico-mechanical properties than those obtained from untreated controls. Under the same beating conditions the bio-treated kraft pulp was noted to have the lower SR° indicating a lower degree of external fibrillation. The paper made from bio-treated kraft pulp has a higher density, tensile property, air permeability and swellability. Furthermore, remarkable energy savings up to 33 % were observed when beating bio-treated kraft pulp. This study contributes to a better understanding of the mechanisms taking place during bio-treatment and the modification processes of cell wall components.     

未漂硫酸盐针叶木浆的酶促打浆

研究了生物酶对未漂硫酸盐针叶木浆酶促打浆后打浆度和纸浆物理性能的影响,确定了酶促打浆的最佳工艺条件,探讨了BIO-RE100半纤维素酶在最佳打浆工艺下对打浆功耗的影响．研究结果表明,生物酶处理最佳工艺条件是：温度为40℃、酶用量为1000g／t、pH值为6、时间为60min．在此最佳条件下使用生物酶预处理浆料,打浆功耗可以降低33％,纸浆物理性能有所提高．扫描电镜分析结果表明,纤维表面剥蚀程度较大,细纤维化程度有所提高,纸浆纤维切断较少．     

REFINING BEHAVIOR OF BAMBOO LONG FIBER FRACTION PULP

Refining of pulp significantly contributes to papermaking process by affecting the runnability of the stock and quality of end product. The greater the production rates of a paper, the greater are the effects of machine downtime through breaks. A correct approach towards refining treatment is very essential for energy savings and product with desired properties. Papermakers are being encouraged to use non-wood fibres for a variety of reasons - the environment, changing agricultural policy and long-term fibre supply. Compared with wood fibres,there is less knowledge on how to treat non-wood fibres for optimum performance. Laboratory studies aimed at understanding the behaviour of unbleached bamboo long fibre fraction pulp on refining in Escher Wyss Laborefiner under simulated process conditions included investigations of the important parameters like wet web tensile, wet web elongation, water retention value and paper strength properties. The paper describes the influence of two specific edge loads, 1000 and 1500 Ws/km on refining of pulp.Bamboo long fibre fraction pulp responds better to lower intensity refining to develop pulp strength.     

REFINING BEHAVIOUR OF BAMBOO LONG FIBRE FRACTION PULP

The strength properties of a sheet of paper depend on the original qualities and strength of the fibres and to the extent of bonding between the fibres that make up the sheet. A paper sheet made from virgin pulp without beating/refining is characterized by low strength, bulkiness and rough surface. These undesirable characteristics can be changed to a large extent by treating the pulp mechanically. This mechanical treatment of fibres in water is termed beating/refining. The refining of any fib…     

麦草碱—乙醇浆性能的初步研究

对纤维分离点处的麦草碱—乙醇浆,麦草苛性钠浆的打浆性能和纸页物理性能的比较发现:麦草碱—乙醇浆得率高12%(绝对值)左右,浆料易打浆,但相同打浆度下,纸页抗撕裂性能较差、脆裂度较大。脱除其部分残余木素后纸页性能得到改善。不论何种浆,打浆过程中纤维形态结构以及纤维的超分子结构的变化都较大地影响纸页的脆性。