国内聚丙烯非织造布产业发展现状分析

综述了Spherizone工艺、Horizone工艺和ST-Ⅲ工艺3种典型聚丙烯(PP)生产工艺,以及非织造布用PP、PP非织造布生产工艺的特点;分析了PP、PP非织造布的供需和应用现状。PP非织造布主要采用纺黏法、熔喷法、熔喷和纺黏复合(SMS)法生产,具有工艺流程短、生产速率快、产品成本低等特点,广泛应用在医疗卫生、过滤分离、土工建筑等领域。2020年国内PP生产能力28 820 kt/a,产量25 815.9 kt,进口量6 555.1 kt,出口量425.0 kt,均持续增长,尤其是非织造用PP增速较快。2020年,受新冠疫情影响,PP非织造布产量大幅增长73.4%,其中纺黏法PP非织造布产量3743.7 kt,增长83.5%;SMS法PP非织造布产量815.6 kt,增长14.7%;熔喷法PP非织造布产量189.9 kt,增长185.6%。未来PP非织造布仍有巨大的市场空间,行业亟待在新型生产装备的开发,功能整理技术、在线复合技术等方面缩小与国际先进技术水平的差距。     

非织造布在建筑领域的应用

本文对屋顶防水用非织造布(改性沥青防水卷材、高分子防水卷材)、建筑包覆用非织造布(隔气膜、防水透气膜)和其他建筑结构材料进行了介绍。适用的非织造布包括聚酯纺黏针刺非织造布、聚丙烯纺黏热轧土工布及各种复合防水透气膜等。     

轻薄型纺黏非织造布性能的测试及分析

选用不同厚度的纺黏非织造布、熔喷非织造布以及SMS复合非织造布作为实验材料,测试了轻薄型纺黏非织造布材料等的性能,通过对这些材料的织物内纤维排列、厚度、面密度、拉伸断裂强力、撕破强力、顶破强力、耐摩擦性等指标的测试与分析,发现大部分性能都与织物的面密度和厚度有一定的关系,而且同等条件下,熔喷非织造布、轻薄型纺黏非织造布和SMS等都各自具有独特的性能,适合开发各类功能性产品,在纺织工业上有广泛的应用。     

双组分纺黏法非织造布装置中纺丝箱体副箱技术研究

介绍了聚乙烯-聚丙烯双组分纺黏非织造布生产工艺流程。为保证双组分纺黏非织造布正常纺丝,将纺丝箱体中的分配管移出,设置纺丝箱体副箱。经过上述改进后,纺丝质量得到提高。该方法还可适用于其它原料的双组分纺黏非织造布生产。     

超高MFR聚丙烯纺丝专用料研制

研究了以一般分子量聚丙烯树脂为基础树脂、采用化学降解法制取的纺丝级超高MFR聚丙烯树脂。用双螺杆挤出机 ,以有机过氧化物为降解剂控制降解制取的树脂MFR可达 40 0 g/10min ,适用于高速纺超细旦纤维及熔喷法非织造布领域     

聚丙烯纺黏非织造布的基本性能测试分析及研究

测试了纺黏非织造布的各性能,通过对比几种纺黏非织造布的测试结果,分析比较了不同试样的纤网结构、厚度、面密度、力学性能(拉伸、顶破等)、弯曲性能(刚柔性、悬垂性等)、透通性能(透气性、透湿性等)、耐磨性、尺寸稳定性、拒水性、硬挺度等,研究了聚丙烯纺黏非织造布的纤维、力学性能、弯曲性能、透通性能等之间的联系与影响,分析了影响聚丙烯纺黏非织造布各性能之间的因素,实验发现纺黏非织造布材料的断裂强力、断裂伸长率,透气性、透湿性等都均与面密度和厚度有一定关系,得出水刺非织造布材料具有独特的性能,适合开发各类功能性产品,在医用等方面有着广泛的应用前景,研究结果可以为下一步研究和开发功能性聚丙烯纺黏非织造布提供一定的参考.     

高性能丙纶非织造布专用PP的开发

对国内外知名的丙纶非织造布专用聚丙烯(PP)(牌号分别为3155E3,S2040,H39S-2,YS835,H30S,S960)的基础物性、加工稳定性、晶型结构等进行了研究。结合卫生用品用丙纶非织造布的应用特点,采用第5代新型催化剂和可控流变技术开发了高性能丙纶非织造布专用PP PPH-Y35X。通过双层纺黏和多层纺熔丙纶非织造布的生产应用,以及对各类非织造布的内在质量、形貌、疵点情况的进一步分析研究表明,PPH-Y35X的综合性能与国外同类产品3155E3接近,相对分子质量分布较窄,为3.55。     

涤纶纺黏针刺非织造布的进展

从国内外非织造布的发展历程和现状进行阐述,着重对国内涤纶纺黏针刺非织造布的发展进行探讨,并对涤纶纺黏针刺无纺布开发前景进行展望。     

生物降解聚碳酸亚丙酯基非织造布的制备与性能

以聚碳酸亚丙酯(PPC)、聚丙烯(PP)、助剂为主要原料,研究了原料比例对可生物降解PPC基复合纺黏切片的热学性能和熔体流动速率的影响;并通过双螺杆挤出机和综合纺丝机熔融共混、牵伸、热压等步骤制备了可生物降解PPC基复合纺黏非织造布,研究了纺丝温度、助剂含量对非织造布物理性能和外观的影响。研究表明,助剂的加入明显提高了复合切片的热稳定性,加入助剂1的非织造布复合切片的熔体流动性能较优,当PPC/助剂1/PP为30/4/70时,所制备的复合非织造布的厚度为0.65 mm,变异系数仅为0.02,拉伸强度为4.76 MPa,克重为122.3 g/m~2。     

旭化成将在泰国扩大纺黏非织造布产能

<正>旭化成公司于2019年3月15日表示,其子公司旭化成纺黏公司将在泰国春武里府Sriracha的Saha集团工业园区建造一条生产线,生产聚丙烯(PP)纺黏非织造布。生产线的产能预计为1.5万t/a,计划于2021年7月开始生产。该公司表示,新生产线将使其纺黏非织造布产能提高至5万t/a。     

国内外纺粘非织造布生产状况和差距

叙述了国内外纺粘非织造布工业的发展和现状。简要介绍了高速短程纺在纺粘非织造布生产中的应用,SMS复合生产系统以及高效拉伸装置。同时,指出了国内外生产企业在技术上存在的较大差距,并对国内企业今后的发展提出建议。     

Status of production and use of polypropylene spunbond in Russia and abroad

The prospects for development of polypropylene nonwoven materials manufactured by the spunbond method in the USA and Western Europe are analyzed. The basic areas of application of nonwovens fabricated by melt spinning are given, the features of development of production of these materials on the Russian market are examined, the fundamental characteristics of the materials are indicated, and the polypropylene spunbond capacities introduced by Russian companies are listed. __________ Translated from Khimicheskie Volokna, No. 1, pp. 3–7, January–February, 2007.     

Nanoparticle effects on the morphology and mechanical properties of polypropylene spunbond webs

We report morphology and mechanical properties of natural nanoclay incorporated spunbond polypropylene composite webs. Nanocomposite spunbond webs were produced with up to 5 wt % natural nanoclay additives on Reicofil®‐2 spunbond line. Influence of nanoclay on the resin rheological properties, processibility, and mechanical properties of webs were studied. Wide angle X‐ray diffraction and transmission electron microscopy analysis were used to investigate the nanocomposite morphology. Intercalated and flocculated morphology was observed for all the concentrates and for all the spunbond fiber webs. The microstructure and polymer morphology in the presence of additives was characterized using a polarized optical microscope. At higher percentage, excess clay platelets were excluded out of the spherulite boundaries. About 20–30% increase in tear strength was observed for webs with up to 2 wt % nanoclay additives. Compared with the control polypropylene spunbond web, nanoclay reinforced samples showed better dimensional stability. Different failure mode was observed for spunbond webs with additives. Spunbond webs with even as low as 1 wt % clay retain their morphology and integrity in bond point after thermal bonding. Nanoclay incorporated spunbond webs showed significant improvements in the stiffness. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010     

Development of Structure and Properties during Spunbonding of Metallocene Catalyzed Polypropylene

Spunbonding is one of the most widely used processing techniques to convert polymers into nonwoven fabrics. metallocene-catalyzed polypropylene is becoming more and more important. A study was carried out to understand the development of structure and properties of a metallocene-catalyzed isotactic polypropylene during spunbonding. This research was conducted using the Reicofil spunbond line at the University of Tennessee, Knoxville. The filaments at three different throughput rates were studied for tensile properties and for structural features by birefringence, X-ray diffraction, and thermal measurements. The fabrics produced at different process conditions were tested for various mechanical properties. The failure mechanism of the fabrics at different bonding temperatures was studied using the scanning electron microscope. The results are compared with a conventional polypropylene processed under similar conditions. The results showed that the mPP produced fabrics with better strength and elongation at comparable processing conditions. Also, failure mechanisms were found to be different for the fabrics produced from the two polymers, which are due to differences in the produced structures.     

纺粘法非织造布设备技术及产品的发展趋势

介绍了纺粘法非织造布技术的起源、发展和设备的主要机型等,分析和比较了不同纺粘生产线和产品的特点,讨论了纺粘法非织造布技术发展方向。     

双组分纺粘法非织造布生产线开发

简单介绍了纺粘非织造布的发展历程,就新开发的国产PP/PE双组分纺粘法非织造布生产线设备状况、主要关键设备及产品指标进行了详细的介绍。     

Thermal bonding of polypropylene nonwovens: Effect of bonding variables on the structure and properties of the fabrics

Properties of the point‐bonded nonwoven fabrics are dependent on the bonding conditions, in addition to those of the polymer/fiber. Thermally bonded carded webs were produced and characterized to investigate the role of bond area, bond size, and bonding temperature on the structure and properties of point‐bonded nonwoven fabrics. It was observed that the bond strength increases with bond area and bond size. The effects of bond area and bond size on fiber morphology were negligible. Significant morphological differences were observed in the bonded and the unbonded regions of the thermally bonded webs. To see how the staple fiber studies relate to the behavior of continuous filaments, similar sets of samples were produced and characterized by using the spunbond system. The observed trends for properties with respect to bonding conditions were similar for spunbond samples. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 92: 3593–3600, 2004     

抗静电纺粘法丙纶非织造布的研制

纺粘法非织造布因在生产过程中不加油剂而有静电较大、易吸灰起毛、手感差等缺陷。本研究采用加抗静电母粒进行原液处理的方法试制了抗静电纺粘法丙纶非织造布。文章介绍了对抗静电剂的组分分析及不同配比的流变性能测定以及纺丝工艺试验。最终产品性能测定的结果表明,用本方法可以制得物理指标与同规格常规产品一致而抗静电性能大为改善的新产品。     

Laminated polypropylene material — A new form of floor covering

Conclusions -- An efficient technological process has been developed for preparing an ecologically clean floor covering, which is a nonwoven polypropylene needle-punched material laminated with polypropylene film. In the preparation process, an extrusion method is used for applying a face layer of thermoplastic polypropylene using a slot-like spinneret. The nonwoven needle-punched material is produced from a melt of granulated polypropylene with aerodynamic stretching of the fibers on an LPP-2400GT line. The floor covering can be made with a design applied on the base (nonwoven material) or with coloring the face layer in bulk.-- Figures have been given for the properties of floor coverings prepared on experimental stands; advantages and defects of the new type of floor coverings have been noted.Translated from Khimicheskie Volokna, No. 2, pp. 33–34, March–April, 1993.     

PP/PE双组分纺粘非织造材料的抗渗整理工艺研究

本文研究了整理液浓度、烘焙温度和烘焙时间时PP/PE双组分纺粘非织造布抗渗性能的影响及作用机理,发现PP/PE双组分纺粘非织造布经抗渗整理后,其抗渗性能明显提高.材料的抗渗性能随整理液浓度的增加、烘焙温度的升高和烘焙时问的增加而增强,但超过某一临界值后,材料的抗渗性能反而下降.另外,由于整理过程中的受热作用,整理后材料变厚,强度有所下降.