防刺服用材料浅析

随着人们对防刺服要求的提高,追求轻便软质的防刺服已经成为主流。防刺材料的开发是提高防刺服防刺性能和穿着舒适性的主要途径。列举了现阶段市场上常用的防刺材料。蚕丝材料由于丝胶的存在,通过固着丝胶的方法可以获得高性能的丝纤维,所以蚕丝作为防刺材料具有可行性。     

软质防刺材料的研究现状及展望

总结软质防刺材料的研究现状。回顾了防刺材料发展的历程;介绍了KEVLAR、UHMWPE纤维的性能;针对软质防刺材料逐渐取代传统硬质、半硬质防刺材料的现状,指出了KEVLAR、UHMWPE纤维树脂基复合防刺材料的研究现状及其不足之处。认为:软质防刺材料应加强防刺机理、结构设计、树脂与纤维界面分析等方面的研究。     

民用防刺服的研发现状

介绍了防刺服的种类,详述了其防刺机理、影响防刺性能的因素、常用测试方法,以及防刺服用材料、组织结构和服装结构;同时认为通过合理复合以提高防刺服的整体防刺性和舒适性是未来研究方向之一,改善服装结构和材质提高舒适性是另一个发展方向。     

柔性防刺材料及其制品的研究现状与进展

从实际应用角度阐述不同种类防刺材料的防刺机理,对比不同种类防刺服的防护性能与穿着舒适性。结合目前柔性防刺材料的加工工艺,重点对比剪切增稠液体整理、树脂浸渍整理、表面涂层整理、离散树脂涂层整理及石墨烯强化的复合材料防刺性能的差异。指出柔性防刺材料的发展趋势及其未来在民用防护领域的应用。     

高危从业人员防刺服探讨概论

本文概述高危从业人员防刺服的应用、种类和发展状况,结合国内外防刺服的研究现状,提出防刺服兼备防护能力和灵活性是新型防剌材料的发展目标和方向,并对新型防刺材料的防刺机理进行探讨。     

蚕丝防刺材料的研究

防刺材料的开发是提高防刺服防刺性能和穿着舒适性的主要途径。本文选取蚕丝作防刺材料，通过自制的防刺试验设备，对自制的蚕丝无纺布的防刺性能进行了测试，并绘制出了试验刀具在穿刺过程中的动能和受力变化曲线，通过观察曲线探讨了无纺布的防刺机理。     

柔性防弹防刺服开发关键技术

柔性防弹防刺服不仅将防弹衣与防刺服的功能合二为一,又具有柔软、轻便、舒适的特点,因而成为了当前个体防护领域的研究重点和热点。本文介绍了织物的防弹防刺机理及几种高性能纤维,并从防弹插板结构设计、材料的合理搭配、新型工艺处理等3个方面详细阐述了柔性防弹防刺服的开发关键技术,旨在为柔性防弹防刺服的制备提供新的思路。     

柔性个体防护材料抗穿刺性能的试验研究

以防刺材料的测试标准介绍测试仪器、试验参数及样品结构选择,分析柔性防刺服的防刺机理和性能。结果表明,一定范围内增加材料厚度是提高柔性防刺服防刺性能的有效途径;混合结构的柔性复合防刺服能达到较为理想的防刺效果。试验中验证的这类复合结构包括纬编轴向衬纱(MBWK)织物与纬平针织物混合制作而成的防刺织物;单一结构织物复合材料的防刺性能比复合结构材料的差。     

防弹防刺服的现状及发展趋势探讨

防弹防刺服作为一种重要的警用防护装备,对其研究开发相当迫切。本文对防弹防刺服相关标准和国内外研究进展情况进行了介绍,着重阐述了防弹防刺服的现状及应用前景。包括超高分子量聚乙烯和芳纶纤维制造防弹防刺材料时的优势及不同结构形式对防弹防刺性能的影响,以及对超高分子量聚乙烯纤维和芳纶的防弹防刺服的性能的测试方法进行了简略的介绍...     

防刺服的研究与发展现状

概述了防刺服的分类及其国内外研究进展,简要介绍了防刺服用纤维材料、硬质材料,以及防刺测试相关标准,展望未来防刺服领域的研究方向.     

The preparation and performance of the UHMWPE filament reinforced nonwoven北大核心CSCD

In this paper, the rib fabric woven by ultra high molecular weight polyethylene filament and twisting was directly used as the base fabric. Ultra-high molecular weight polyethylene filament was paved on the rib layer by using the method of multi-pipeline interval conveying, and PET-PA6 bicomponent orange petal fiber spunlace fabric was coated to prevent fiber drift. Then, composite reinforced nonwovens were prepared through spunlace. The experimental results show that: the tensile property, softness and drapability of reinforced nonwovens are between knitted fabric and the common nonwovens, and stab-resistance is better than the two; knitted fabric has greatly improved large elastic stiffness of the ordinary nonwovens; the density of the rib-layer fabric determines the composite effect and the properties of the final product. This product is mainly applied to stab-resistant and bulletproof clothing. Relative to the cascading binding or gluing, spunlaced composite method makes the total thickness of stab-resistant layer reduce 4 mm, and makes the quality decrease by around 1 kg. Besides, the comfort is greatly improved. © 2017 China Silk Association. All rights reserved.     

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%.