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化学镀涤纶织物的研究现状 总被引:1,自引:0,他引:1
概述了用以赋予织物电磁屏蔽性能的化学镀技术的研究现状。详细阐述了织物前处理工艺、织物化学镀镍、铜、银的施镀工艺和镀层性能的研究成果,对化学镀的发展前景进行了展望。 相似文献
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设计经、纬纱镀银纤维和涤纶纤维的不同排列比例并进行小样试制,对各方案的试样进行抗电磁波性能测试,比较经、纬纱中镀银纤维和涤纶长丝纤排列比及不同镀银纤维含量与抗辐射性能的关系.结果表明,经、纬纱中镀银纤维排列越密集、银纤维含量越高,织物的电磁波屏蔽性能越好.比较了镀银纤维网格与抗辐射性能关系,证明织物的电磁波屏蔽性能与镀银纤维网格的大小具有较好的线性相关关系. 相似文献
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涤纶织物化学镀镍的研究 总被引:2,自引:2,他引:2
采用化学镀镍技术对涤纶织物进行了酸性、碱性镀镍以及着色处理。借助SEM、X射线能谱仪对化学镀镍织物表面结构进行了表征和分析。测试了涤纶织物化学镀镍前后服用性能的变化,并对导电性和电磁波屏蔽性能进行了测试。结果表明,镀层均匀程度对电磁波屏蔽性能影响较大。随着镀镍层厚度的增加,电磁波屏蔽效能增速先增大后减小。酸性镀镍织物的电磁波屏蔽性能优于碱性镀镍织物。镀层织物经着铜色处理后,电磁波屏蔽性能有明显提高。当质量增加70%时,化学镀涤纶织物电磁屏蔽性能较好,同时服用性能变化不明显。 相似文献
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In this study, novel conductive fabrics were developed by polymerising of aniline onto the polyamide (PA)-knitted fabrics. The fabric treatment was done by the chemical polymerisation method at 0.5, 0.8 and 1.2?M aniline concentrations. Hydrochloric acid as acidic medium and ammonium per sulphate as oxidant were employed during the polymerisation process. The polyaniline (PANI)-treated PA fabric structures were fully characterised and evaluated in terms of their electromagnetic shielding effectiveness, absorption and reflection characteristics and tensile properties. Additionally, the fabrics were examined by scanning electron microscope (SEM) for the surface morphology and Fourier transform infrared spectroscopy for the chemical functionality. The electromagnetic shielding effectiveness, absorption and reflection characteristics were determined by Network Analyzer with a frequency ranged from 15 to 3000 MHz. The electrical characteristics were measured by the two ends method. It has been concluded that the bursting strength values of the treated fabrics reduced when the amount of monomer in the concentrations decreased as compared to the untreated fabrics. It is interesting to note that 1.2 M treated fabric had the highest bursting strength values as compared to the other treated fabrics. It was also found that 0.5 M concentration of PANI-treated fabric had the lowest surface resistivity due to this it showed the highest conductivity value. Another important finding is that the 0.5 M-aniline treated fabric had the highest shielding effectiveness. 相似文献
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设计了几种代表性织物组织结构的不锈钢纤维混纺针织物,研究了织物组织结构对针织物电磁屏蔽效能的影响。织物组织结构选择充满系数较高的双罗纹组织、打鸡双面组织、添纱衬垫组织、衬纬组织和绕经组织,以降低织物厚度、密度、孔隙等因素对织物电磁屏蔽效能的影响。对所有织物进行了电磁屏蔽效能测试,结果显示:双罗纹织物、双面织物、添纱衬垫织物、衬纬织物的电磁屏蔽效能都很不理想,且远远低于含不锈钢纤维机织平纹布,但是绕经织物的电磁屏蔽效能要比其他组织的针织物的屏蔽效能高得多,基本能达到国标上对屏蔽服的屏蔽效能要求。绕经织物与其他几种针织物最大的不同就是在纵向多了一些连续的含不锈钢纤维的混纺纱。说明针织物组织结构是影响电磁屏蔽效能的关键因素,可通过在织物纵横向形成纵横交错的导通的金属网栅的方式来改善不锈钢纤维混纺针织物的屏蔽效能。 相似文献
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Polyamide 6 (PA 6)/multiwalled carbon nanotube (MWCNT)-coated cotton fabrics having varying amounts of MWCNTs (10, 12, 14 and 16?wt.%) in PA 6 (10, 15 and 20?wt.%) were fabricated with dip coating method to investigate the electromagnetic shielding properties in the frequency range of 15–3000 MHz. The effects of MWCNT loading on electrical resistivity, electromagnetic interference shielding effectiveness and also shielding mechanism have been studied. The highest electromagnetic shielding effectiveness value was obtained at 20?wt.% MWCNT loading in 10?wt.% PA 6 and the PA 6/MWCNT-coated composites showed the absoprtion-dominated shielding mechanism. 相似文献
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Azam Ali Nhung H. A. Nguyen Vijay Baheti Munir Ashraf Jiri Militky Tariq Mansoor 《纺织学会志》2018,109(5):620-628
The objective of present study was to develop multifunctional and wearable electrically conductive fabrics with acceptable comfort properties by in-situ deposition of silver particles. The effect of silver nitrate concentration and number of dips was investigated for change in electrical conductivity, EMI shielding, and antimicrobial properties of coated fabrics. The dynamic light scattering and SEM analysis were employed to study the morphology of deposited silver particles. The EMI shielding was found to increase with increase in concentration of silver particles. Later, the comfort and mechanical properties were studied. No significant decrease in air permeability and water vapor permeability was observed due to partial coverage of fabric pores by coating of silver particles. Moreover, the coated fabrics also showed promising behavior toward antimicrobial properties. When the durability of coated fabrics was examined against washing, the application of binder provided good retention of silver particles without loss of electrical conductivity of coated fabrics. 相似文献
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Silver compounds have extensive use among the antimicrobial agents in textiles. Silver particles are released into the water during washing processes in particular and they are released from the textile in time due to use. In this work, silver ion release from cotton and polyester antimicrobial fabrics which are the most widely used textiles have been studied. Two well-known silver-based commercial agents and silver-doped calcium phosphate powder-based antibacterial finishing agent which was developed in our previous work were applied to the fabric samples. The release of silver from the fabric samples during washing and incubation was determined by ICP-OES. The effects of fabric composition, time and laundering process on the silver release were studied. It was found that significant amount of silver was released from textile fabrics during washing due to the mechanical forces exerted on the fabrics. The total released silver varied from 73.43 to 92.27% for cotton fabrics and 76.49 to 89.70% for PES fabrics after 20 washing cycles. Results also showed that calcium phosphate can reduce the amount of silver release significantly. It was also found that even a smaller quantity of nanosilver particles was sufficient for strong antibacterial activity. 相似文献
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本文旨在通过两种加工方式研制成抗电磁辐射精纺面料,一种是镀银长丝与羊毛单纱并捻合股织造成并捻织物,一种是镀银长丝直接用作经纬纱与羊毛交织成交织物。由织物的屏蔽效能测试结果可知,并捻织物电磁屏蔽效能在2250-2650MHz波段内优于交织物,最高可达85dB,具有较好的抗电磁辐射效果。另外,经纬密度的变化对织物电磁屏蔽能力也有一定影响,两种织物紧度在78%左右、交织物羊毛与长丝比例为1:2时电磁屏蔽效果较好。其结果对开发高性能抗电磁辐射精纺面料有一定的指导意义。 相似文献
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In this study, a range of conductive hybrid knitted fabrics and their composites have been investigated for shielding effectiveness in the frequency ranges of 50 MHz to 1.5 GHz (low frequency) and 4 to 8 GHz (C-Band). Carbon and stainless steel (SS) filaments were combined in Dref-3 spinning machine and different hybrid yarns were prepared. The plain- and rib-knitted fabrics were made in V-bed flat knitting machine from the prepared hybrid yarns. The composite laminate was prepared by sandwiching a ply of fabric between the polypropylene films in compression moulding machine at 180 °C for 5 min under a consolidation pressure of 12 bar. All the fabrics and composites were tested for shielding effectiveness (SE) in coaxial transmission line and C-band waveguide with the help of vector network analyser. It was observed that fabric having both conductive loop and inlaid yarns exhibited higher SE of 20.2 dB than other fabrics in low-frequency range. However, in the composite form, carbon composite with SS inlaid yarn showed better SE of 45 dB than other composites. In C-band frequency range, conductive loop fabric structures yielded high shielding effect in course direction compared to wales direction. Compared to fabric form, the composite showed higher SE for all frequency ranges. This study proposes that knitted fabrics and their composites can be utilized as electromagnetic shields in wide frequency ranges. 相似文献
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分别用化学镀铜和电镀锡法在涤纶织物(PET)表面涂覆一层铜/锡合金,通过正交实验和单因素实验法对制备工艺进行优化,对制得的电磁屏蔽织物面料进行结构表征和性能测试.结果表明,优化化学镀铜工艺为:硫酸铜25 g/L,甲醛30 g/L,柠檬酸15 g/L,pH 12,65℃;优化电镀锡工艺为:电压1.5 V,9 min.扫描... 相似文献
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空心微珠化学镀银及其织物涂层整理 总被引:1,自引:0,他引:1
采用化学镀方法自制金属银包覆空心微珠,并将其应用于织物涂层整理.通过SEM、XRD、导电及电磁屏蔽性能测试得出,化学镀银空心微珠涂层织物具备一定的导电和电磁屏蔽效能,镀银微珠在涂层中起到导电填料的作用,当微珠的填充量达一定密度时,其电阻率值与电磁屏蔽效能值与相同工艺条件下银粉涂层织物接近. 相似文献