有机导电纤维与羊毛混纺应用性能研究

将有机导电纤维与羊毛混纺制成纱线与织物,测试纱线电阻值及织物表面摩擦电荷密度,研究导电纤维含量、织物组织结构及纱线线密度对织物抗静电性能的影响.结果表明:随着导电纤维含量增加,纱线电阻值下降,织物表面摩擦电荷密度下降;纱线越细,织物表面摩擦电荷密度越大,抗静电性能越差;机织结构比针织结构具有更好的抗静电性能.     

碳黑导电纤维的导电性能

为开发和拓展碳黑导电纤维的应用,利用体式显微镜和扫描电子显微镜对导电纤维的表面形态进行表征,测试了不同碳黑含量、不同线密度的导电纱线在标准环境下的电阻大小,并线性拟合了导电纱线电阻大小与测量长度的关系,对比分析了热定型温度和洗涤次数对纱线导电性能的影响。结果表明：碳黑导电成分在纤维表面,改善了锦纶纤维的力学性能;碳含量较高的纤维其导电性能优于碳含量较低的纤维,导电纱线电阻与它们的长度成正比,与截面成反比;锦纶导电纱的电阻值随着温度的升高而减小,纱线热处理温度不超过120 ℃;洗涤次数对锦纶导电纱线的导电性能影响小,纱线导电性能稳定。     

含芳纶系列阻燃防静电织物的研制

使高性能纤维芳纶分别与3种阻燃纤维混纺，并与导电纤维交织形成特定织物，对织物采用特殊染料和工艺进行染色整理．结果表明，所试制的三种织物的阻燃性能、防静电性能、强度及色牢度分别达到了消防员防护服面料、一般阻燃防护服面料和装饰用布等不同层次的要求，从而有望在相关领域获得应用．     

不锈钢纤维混纺织物的性能测试和研究

基于对台湾金富邦纤维科技有限公司产生的8μm、40mm、21s不锈钢阻燃粘胶纤维的基本力学性能试验研究,运用现代棉纺织生产工艺,纺制出含量为30%的不锈钢纤维混纺纱线。在小样机上制织织物后,分析了不锈钢纤维混纺织物吸湿、保温及导电性能。得到如下结论:不锈钢纤维混纺纱线织成的织物具有较好的导热性能,不锈钢纤维含量越高,织物的导电性能越好;经、纬向均含有不锈钢纤维的织物静电屏蔽性能较单向好。     

PTT/毛/PANI复合导电纱的制备及其织物电磁屏蔽效能研究

以PTT/毛混纺纱为基体,以苯胺为原料采用原位聚合法制备了PTT/毛/PANI复合导电纱,研究了反应液浓度对复合纱表面形貌及导电性能的影响关系,并用导电纱织制了针织物,研究了织物的抗电磁辐射性能。研究结果表明:随着反应液浓度的提高,纤维表面聚苯胺含量增加,赋予纱线一定的导电性能;以PTT/毛/PANI复合导电纱织制的织物具有一定的抗电磁辐射性能,且随着织物中PTT/毛/PANI复合导电纱含量的提高,织物的抗电磁辐射性能提高。     

几种多组分阻燃防护织物的研制

探讨几种多组分阻燃防护服织物的研制过程,并测试了织物的主要物理指标和阻燃性能。介绍了选用的几种阻燃纤维的性能指标;设计了8种纱线,并测试了其性能。分别生产了8种织物,介绍了织物规格;以某一织物为例,介绍了生产工艺;测试分析了8种织物的主要物理指标和阻燃性能指标。结果表明:使用一定比例的导电纤维或者在织造过程中加入导电丝可以有效降低织物的电荷面密度;高性能阻燃纤维在织物中的比例越高,织物阻燃性能越好。认为:根据各织物性能测试结果可将其应用到不同的领域。     

用于柔性织物电极的导电纱线耐久性研究

为了提高运动训练领域智能服装的使用寿命,针对镀银纱线耐久性差的问题,提出了一种石墨烯聚合物导电纱线代替其作为织物电极导电材料的方法.通过实验分别比较汗液和光照对导电纱线表面形态、强力和电学性能的影响.结果表明:镀银导电纱线在汗液处理时电阻增加很快、纱线均匀性变差;随着浸泡时间的增加纤维表面镀银层脱落面积逐渐增大,当镀银层表面有缺陷时,破坏过程会加速;光照也会增加镀银纱线的电阻,同时降低电阻均匀性;腈纶石墨烯纱线耐汗液性能比镀银导电纱线有明显的提高,且具有比较稳定的耐光照性能.腈纶石墨烯纱线更适合作为运动训练等场景下具有生理监测功能的织物电极材料.     

原液染色芳纶混纺纱工艺研究

探讨消防员防护服外层面料所用芳纶色纤混纺纱的纺纱工艺和技术要点。分析了消防员防护服外层面料的技术指标,纱线原料选用原液染色间位芳纶纤维和有机导电纤维。对原液染色间位芳纶纤维进行预处理;优化清梳工序;采用预混和混并相结合的并条工艺;粗细纱工序合理配置隔距、压力和纱线捻系数,在现有棉型设备上成功纺制出原液染色间位芳纶纤维/有机导电纤维98/2 18.5tex×2纱,纱线各项指标均达到了织造的要求。认为:通过合理配置各工序关键参数,选用设备器材专件,严格操作管理和温湿度控制,提高成纱质量,可以满足后续织造以及面料性能要求。     

织物抗静电性能影响因素的探讨

研究织物抗静电性能的影响因素及其影响规律.选择主体纱线原料、导电纱原料、织物组织、紧度作为影响因素,采用正交试验方法安排试验方案,通过方差分析判别四因素对嵌入式抗静电织物抗静电性能影响的显著程度;并通过进一步试验,分析各影响因素与织物摩擦静电压的关系,结果表明,织物主体纱线材料的质量比电阻对织物抗静电性能影响显著;在其他参数相同的条件下,导电纱在织物表面显露多,抗静电效果好;织物组织和紧度对织物抗静电性能影响不显著,但对织物中导电纱的含量有一定影响.     

含疏水纤维的纱线对单层织物吸放湿性的影响

在不同含量表面疏水纤维的纱线织成的平纹织物的基础上,探讨了该织物的吸湿性和放湿性变化规律,研究证实当构成织物的纱线中加入少部分表面疏水纤维后,织物具有良好的吸放湿性能.     

Reliable identification of grapevine rootstock varieties using RAPD PCR on woody samples

Since grapevine ( Vitis spp .) rootstock material is being traded increasingly as disbudded woody material a lack of distinctive morphological features on such material necessitates an alternative and reliable means of identification. Methods described here were developed for rapid and efficient extraction of DNA from woody samples rich in phenolic compounds and polysaccharides, and for subsequent identification of varieties by RAPD PCR. Using these methods, and with the application of only one selected RAPD primer, we were able to differentiate sixteen rootstock varieties, including the seven varieties most commonly used in Germany. Problems commonly encountered with reproducibility of RAPD patterns were avoided by choosing primers with a dinucleotide sequence and a high G/C content that allowed a rather high annealing temperature of 45°C. Methods described here should also be useful for other horticultural crops, especially those with woody tissues rich in phenolic compounds and polysaccharides.     

An internet compendium of analytical methods and spectroscopic information for monomers and additives used in food packaging plastics

An internet website (http://cpf.jrc.it/smt/) has been produced as a means of dissemination of methods of analysis and supporting spectroscopic information on monomers and additives used for food contact materials (principally packaging). The site which is aimed primarily at assisting food control laboratories in the European Union contains analytical information on monomers, starting substances and additives used in the manufacture of plastics materials. A searchable index is provided giving PM and CAS numbers for each of 255 substances. For each substance a data sheet gives regulatory information, chemical structures, physico-chemical information and background information on the use of the substance in particular plastics, and the food packaging applications. For monomers and starting substances (155 compounds) the infra-red and mass spectra are provided, and for additives (100 compounds); additionally proton NMR are available for about 50% of the entries. Where analytical methods have been developed for determining these substances as residual amounts in plastics or as trace amounts in food simulants these methods are also on the website. All information is provided in portable document file (PDF) format which means that high quality copies can be readily printed, using freely available Adobe Acrobat Reader software. The website will in future be maintained and up-dated by the European Commission's Joint Research Centre (JRC) as new substances are authorized for use by the European Commission (DG-ENTR formerly DGIII). Where analytical laboratories (food control or other) require reference substances these can be obtained free-ofcharge from a reference collection housed at the JRC and maintained in conjunction with this website compendium.     

Aroma characterization of various apricot varieties using headspace–solid phase microextraction combined with gas chromatography–mass spectrometry and gas chromatography–olfactometry

The characterization of the aromatic profile of several apricot cultivars with molecular tracers in order to obtain objective data concerning the aromatic quality of this fruit was undertaken using headspace–solid phase microextraction (HS–SPME). Six apricot cultivars were selected according to their organoleptic characteristics: Iranien, Orangered, Goldrich, Hargrand, Rouge du Roussillon and A4025. The aromatic intensity of these varieties measured by HS–SPME–Olfactometry were defined and classified according to the presence and the intensity of grassy, fruity and apricot like notes. In the six varieties, 23 common volatile compounds were identified by HS–SPME–GC–MS. Finally, 10 compounds, ethyl acetate, hexyl acetate, limonene, β-cyclocitral, γ-decalactone, 6-methyl-5-hepten-2-one, linalool, β-ionone, menthone and (E)-hexen-2-al were recognized by HS–SPME–GC–O as responsible of the aromatic notes involved in apricot aroma and considered as molecular tracers of apricot aromatic quality which could be utilized to discriminate apricot varieties.     

Tests of potential functional barriers for laminated multilayer food packages. Part I: Low molecular weight permeants

The advent of the functional barrier concept in food packaging has brought with it a requirement for fast tests of permeation through potential barrier materials. In such tests it would be convenient for both foodstuffs and materials below the functional barrier (sub-barrier materials) to be represented by standard simulants. By means of inverse gas chromatography, liquid paraffin spiked with appropriate permeants was considered as a potential simulant of sub-barrier materials based on polypropylene (PP) or similar polyolefins. Experiments were performed to characterize the kinetics of the permeation of low molecular weight model permeants (octene, toluene and isopropanol) from liquid paraffin, through a surrogate potential functional barrier (25 μm-thick oriented PP) into the food simulants olive oil and 3% (w/v) acetic acid. These permeation results were interpreted in terms of three permeation kinetic models regarding the solubility of a particular model permeant in the post-barrier medium (i.e. the food simulant). The results obtained justify the development and evaluation of liquid sub-barrier simulants that would allow flexible yet rigorous testing of new laminated multilayer packaging materials.     

Analysis of benzo[a]pyrene in spiked fatty foods by second derivative synchronous spectrofluorimetry after microwave-assisted treatment of samples

A simple, rapid and inexpensive method has been developed for the determination of benzo[a     

The development of reference materials for paralytic shellfish poisoning toxins in lyophilized mussel. II: Certification study

This paper describes the second part of a project undertaken to develop certified mussel reference materials for paralytic shellfish poisoning toxins. In the first part two interlaboratory studies were undertaken to investigate the performance of the analytical methodology for several PSP toxins, in particular saxitoxin and decarbamoyl-saxitoxin in lyophilized mussels, and to set criteria for the acceptance of results to be applied during the certification exercise. Fifteen laboratories participated in this certification study and were asked to measure saxitoxin and decarbamoyl-saxitoxin in rehydrated lyophilized mussel material and in a saxitoxin-enriched mussel material. The participants were allowed to use a method of their choice but with an extraction procedure to be strictly followed. The study included extra experiments to verify the detection limits for both saxitoxin and decarbamoyl-saxitoxin. Most participants (13 of 15) were able to meet all the criteria set for the certification study. Results for saxitoxin.2HCl yielded a certified mass fraction of <0.07 mg/kg in the rehydrated lyophilized mussels. Results obtained for decarbamoyl-saxitoxin.2HCl yielded a certified mass fraction of 1.59+/-0.20 mg/kg. The results for saxitoxin.2HCl in enriched blank mussel yielded a certified mass fraction of 0.48 +/- 0.06 mg/kg. These certified reference materials for paralytic shellfish poisoning toxins in lyophilized mussel material are the first available for laboratories to test their method for accuracy and performance.     

Announcing a new international peer-reviewed journal:Food Science and Human Wellness now accepting manuscript submission in English

<正>We are pleased to announce the launch of a new international peer-reviewed journal-Food Science and Human Wellness,ISSN 2213-4530,which is an open access journal,produced and hosted by Elsevier B.V.on behalf of Beijing Academy of Food Sciences.Food Science and Human Wellness is an international peer-reviewed English journal that provides a forum for the dissemination of the     

Chinese CTP Market

According to Printing and Printing Equipment Industries Association of China（PEIAC）＇s statistics to the plate manufucturer in China, in 2013, the actual offset plate production has reached 346 million square meters in China. Among them, the CTP production volume was 245 million square meters, up by 11% than that of last year; the total sales of the CTP plate was 239 million square meters, up by 13%.     

Preparatory Work of Print China 2015 is Going Smoothly

正Held at Guangdong Modern International Exhibition Center,Print China 2015 will cover 7exhibition halls,besides the original Hall No.3,4,5,6,7,the newly built F zone of Hall 3 will be used too.The total area will be140,000 square meters.Hall 3:Offset and large printing equipment,package printing equipment,post press