微细旦与纳米纤维非织造布在高效过滤上的应用

微细旦非织造布过滤介质具有产品的多样性、低成本、多功能性以及良好的性价比等特点,在过滤分离材料领域占据着重要位置。分析了微细旦及纳米非织造布过滤材料的特点及市场情况,以一些生产厂家的过滤产品为例,重点介绍了熔喷和纺粘非织造布、纳米纤维非织造布的特性及其在滤材上的应用。     

书讯

正今有8本关于国外技术的内部资料,分别是:《纤维制品手册》、《功能纤维》、《日英汉纺织工业词汇》、《静电纺丝与纳米纤维》、《碳纤维复合材料》、《非织造布及综合技术》、《过滤》、《除尘》,可为业内同行提供参考。如需要请联系编者刘辅庭(上海市纺织科学研究院退休留日高工、上海非织造材料协会高级顾问)。联系方式:     

书讯

<正>今有8本关于国外技术的内部资料,分别是:《纤维制品手册》、《功能纤维》、《日英汉纺织工业词汇》、《静电纺丝与纳米纤维》、《碳纤维复合材料》、《非织造布及综合技术》、《过滤》、《除尘》,可为业内同行提供参考。如需要请联系编者刘辅庭(上海市纺织科学研究院退休留日高工、上海非织造材料协会高级顾问)。联系方式:18201912104,021-65089287,lffliurigg@sina.com。8本书内容简介:《纤维制品手册》含各国的设备生产、原料能源、消费价格、进出口、经营劳务及最近的纤     

汽车空调过滤用熔喷复合非织造布研究综述

现今汽车车厢用空调过滤器已经在全球形成了一个年产值超过数亿美元的巨大行业,并处在不断的发展和创新过程中。分别从空调过滤材料的研究进展及发展趋势、熔喷非织造布的过滤机理、熔喷非织造布复合的目的和方法以及过滤材料的测试标准和方法这几个方面来阐述,说明汽车空调过滤熔喷复合非织造布具有很好的市场前景。     

PM 2.5过滤材料制造技术

概述了工业烟气的成分和性状,简要的介绍了现有的常用滤料技术。介绍了超细纤维非织造布过滤效率高、过滤阻力小、容尘梯度结构好、寿命长等方面的优点,详细阐述了超细纤维非织造布过滤材料和覆膜过滤材料的制造工艺,并阐明了其中尚未解决的一些问题。文章认为,实际的应用中应根据具体的工况来选择相应的滤料。     

PLA/PET复合滤料的制备及性能研究

为了获得高效防尘口罩的过滤材料,以聚乳酸(PLA)为原料,采用静电纺丝方法制备PLA纳米纤维并沉积在聚对苯二甲酸乙二酯(PET)非织造布基材的表面,制备静电纺PLA/PET复合过滤材料。研究了复合过滤材料的结构、纤维直径及过滤性能。结果表明:PLA/PET复合滤料显著改善PET非织造布的过滤性能;随着PLA纺丝液的质量分数的增加,PLA/PET复合滤料的过滤性能逐渐变小;随着电压的增加,过滤性能逐渐增加;PLA/PET复合滤料的过滤效率可以达到98%以上,具有良好的高效防尘性能。     

书讯

正今有8本关于国外技术的内部资料,分别是:《纤维制品手册》、《功能纤维》、《日英汉纺织工业词汇》、《静电纺丝与纳米纤维》、《碳纤维复合材料》、《非织造布及综合技术》、《过滤》、《除尘》,可为业内同行提供参考。如需要请联系编者刘辅庭(上海市纺织科学研究院退休留日高     

生物质石墨烯纺黏非织造布的制备及其过滤性能

为了提高复合非织造布的过滤效率,采用水热合成法制备生物质石墨烯炭分子筛,将其加入纺黏非织造布里,对非织造布的过滤效果进行了研究。结果显示:添加了生物质石墨烯炭分子筛的纺黏非织造布的过滤效率比普通纺黏非织造布的过滤效率提高了31%。再将其与普通熔喷非织造布复合,制成的复合熔喷非织造布的过滤效果均高于普通熔喷非织造布,最大过滤效率达到了96.6%。     

聚砜非织造布复合膜的制备及其空气过滤性能

为改善非织造布材料的空气过滤性能,采用相转换方法制备了聚砜(PSF)/非织造布复合膜.通过改变PSF、聚乙烯吡咯烷酮(PVP)的质量分数和添加无机亲水纳米二氧化钛(TiO2)的方法,研究了各个参数变化对PSF/非织造布复合膜的影响.对复合膜透气量、过滤效率、孔径等进行了测试分析.结果表明:随着PSF质量分数的增加,复合...     

高性能聚丙烯熔喷布驻极母粒的制备与应用研究

对聚丙烯熔喷布及聚丙烯熔喷布用驻极母粒制备方法进行了介绍,针对现有驻极母粒制备方法的不足,对不同的主驻极剂材料、辅助驻极材料以及其之间的协同作用、制备工艺等展开了研究,通过以熔喷聚丙烯、柔顺剂、主驻极剂、辅驻极剂、成核剂、抗氧剂为原料,工艺要求主驻极剂均匀分散于辅驻极剂中,主驻极剂与辅驻极剂之间产生协同效应,获得性能良好的驻极母粒产品。在聚丙烯熔喷布喷丝过程,加入的驻极母粒产品,可以有效提高熔喷布表面电荷,通过测试熔喷布过滤效率,通过加入本方法制备的驻极母粒,细菌过滤效率（BFE）大于95%,聚丙烯熔喷布的综合过滤效率、抗热衰的性能、柔韧性得到大幅度提升。     

我国水刺非织造布专用涤纶短纤市场前景分析

综述了近年来我国水刺非织造行业的发展情况、水刺非织造布的主要应用领域以及对涤纶短纤的性能要求 和水刺专用涤纶短纤的特点。指出随着我国水刺非织造布产能及需求的快速增长,给水刺专用涤纶短纤带来了良好的市 场前景。     

RTM制造技术的新进展

本文介绍ＲＴＭ制造技术在扩大树脂的应用品种、制造高纤维体积含量、多维织物及预成型坯件制件、柔性膜ＦＲＴＭ技术和树脂压注及固化过程监控等方面的新进展。     

新型滤布的设计与织造

由聚酯和聚酰胺6两种原料的单丝经过织造、热定形、接头加工而成的滤布,具有抗拉强度大、耐曲折性好、耐酸碱、耐高温、滤水性好、质轻、使用方便等特点。以具体产品为例,阐述了生产该品种时原材料的选择、织物结构与工艺的设计及产品的技术参数。     

Synthesis of biomorphic SiC fabric ceramic from pre-processed ramie fibres

Biomorphic SiC fabric ceramic was synthesised by in situ reactive molten silicon infiltration process using artificial ramie fibres’ template, phenolic resin, and silicon. The phase compositions, microstructure, and physical characteristics of the biomorphic fabric ceramic were characterised and tested. The results show that the final ceramic retains the ramie fabric structure, and presents duplex microstructure including biomorphic SiC fibres and network SiC ceramic around the biomorphic fibres. This biomorphic SiC fabric ceramic is constituted by 95.8% of SiC, has a low density of 1.02?g?cm^?3 and a high porosity of 63.7%, and shows low linear shrinkages and better electrical resistivity along the fibre axis. The uniform and fine SiC particles with the size of ～4?µm indicate that the reaction–formation mechanism is the dissolution of carbon and the precipitation of SiC, without a second precipitation.     

New constitutive model for anisotropic hyperelastic biased woven fibre reinforced composite

Abstract

This paper presents an improved constitutive model having application in finite element analysis of composites made of hyperelastic matrix with biased woven fabric reinforcement and is based on a pragmatic approach and the continuum mechanics theory. A generalised strain energy function is developed via a series of uniaxial tests in fibre warp and weft directions and via shear tests of representative samples of composite fabric. The proposed material characterisation approach is demonstrated on composites made of neoprene rubber matrix with nylon biased woven reinforcements having volume fraction composition 0·74 vol.-% neoprene and 0·26 vol.-% nylon. The material parameters in the anisotropic hyperelastic model are obtained by minimisation of least square residuals of uniaxial and pure shear energy densities against the respective strain invariants. Numerical simulations of uniaxial and bulge tests of the composites using the material model presented in this paper are shown to correspond well with results obtained from laboratory experiment.     

聚丙烯塑编制品的稳定化与应用技术

根据聚丙烯树脂及塑编制品的热、氧、光老化特性,以及影响聚丙烯树脂及塑编制品稳定性能的若干因素,论述了塑料抗氧剂、光稳定剂及JC -1225、JC -790B对聚丙烯及塑编制品的防老化稳定作用.说明国产防老化稳定体系用于聚丙烯塑编制品,可以满足紫外试验和自然光暴晒下的稳定性能,可以达到预期的试验检验和实际使用要求.     

A novel halogen‐free and formaldehyde‐free flame retardant for cotton fabrics

A novel halogen‐free and formaldehyde‐free flame retardant (FR), which contains phosphorus, nitrogen, and silicon, was synthesized for cotton fabrics considering the synergistic effect of phosphorus, nitrogen, and silicon. The structure of the new FR was characterized by Fourier‐trans‐form infrared spectroscopy, and the surface morphology of the treated fibre was observed using scanning electron microscope. The thermal property of the FR treated cotton fabric was studied through thermal gravimetric analysis. The TG results indicate that the FR can protect cotton fabric from fire to a certain degree. The vertical flammability test and limiting oxygen index results further indicate that the FR has excellent FR properties. Finally, the durability and other performance properties of the treated fabric were studied and the results show that the new materials can be used as a semi‐durable FR for cellulosic fibres. Copyright © 2011 John Wiley & Sons, Ltd.     

Effect of Hydrophobic Plant Extract on the Physicochemical Properties of a Transparent Fabric Softener

This article investigates the effect of hydrophobic supercritical CO₂ raspberry seed extracts on the physicochemical and functional properties of a modern, transparent fabric softener. The addition of a hydrophobic extract to a transparent softener formulation increased the turbidity and dynamic viscosity of the product compared to the reference formulation (with no added extract). In addition, fabric rinsed in a bath containing the transparent fabric softener enriched with the hydrophobic extract was characterized by a higher degree of softness and slightly lower values of fabric rewettability (two parameters determining the usable properties of this type products) in relation to the values determined for a fabric exposed to the rinsing process in an aqueous solution of the transparent fabric softener without added extract. The results obtained in the assessment of physicochemical properties point to the modification of the structure of fabric softener resulting from the growth of surfactant aggregates due to solubilization of the hydrophobic extract. As a consequence, the deposit—an adsorption layer of surfactants (responsible for key characteristics relevant to the performance of this type of products) remaining on the fabric after the rinsing process—is modified.     

熔喷非织造布技术发展概况及应用

介绍了熔喷非织造布技术的生产工艺过程及原理，分析了国内外熔喷技术的发展现状和发展趋势，探讨了熔喷产品的应用前景，并就其今后的发展提出了几点建议。     

纳米TiO_2改性涤棉混纺织物的风格性能

采用水热合成技术,以硫酸钛、硫酸氧钛、钛酸丁酯三种原料作为钛源,让纳米TiO2生成的同时直接负载到涤棉混纺织物表面,然后使用KES-FB织物风格测试仪测试了水热法纳米TiO2改性涤棉混纺织物的风格性能。试验结果表明:改性后的涤棉混纺织物的拉伸性能、剪切性能、弯曲性能、压缩性能、表面性能都发生了一定的变化。该研究为功能性涤棉混纺织物的研究和应用提供了重要的参考价值。