涤纶织物少水染色工艺研究

为了实现涤纶织物分散染料少水染色,采用分散染料浸轧染色。研究黏合剂的种类、用量,防泳移剂用量及染色工艺对织物K/S值和色牢度的影响。结果表明,选用黏合剂EPD、用量6%,防泳移剂AM用量1%,120℃预烘7 min,180℃焙烘4.0 min,涤纶织物的K/S值达到14以上,耐摩擦色牢度和耐皂洗色牢度均能达到4～5级。     

涤纶的HA型耐碱分散染料染色

采用耐碱性分散橙HA、红HA-3B和蓝HA对涤纶织物进行碱性染色,研究烧碱用量、扩散剂用量、染色温度和时间等对涤纶织物染色性能的影响;探讨染料对涤纶织物的提升性能和染色牢度。结果表明:分散橙HA、红HA-3B和蓝HA具有较好的耐碱稳定性,在碱性条件下,0~2%(omf)的染料用量范围内,三种染料均具有很好的提升性能,适用于涤纶织物碱性染色;优化的染色工艺为:染料2%(omf),烧碱2 g/L,扩散剂NNO2 g/L,130℃染色60 min。涤纶织物应用该碱性染色工艺可获得较高的表观色深、优良的耐洗和耐摩擦色牢度。     

涤纶织物的连续式轧染工艺

针对涤纶染色中为提高色牢度而进行还原清洗所带来的能源消耗和污水处理问题,制备了C.I.分散蓝291分散体,并将其用于涤纶织物的连续式轧染中.研究了该分散体的分散性能及粒径对染色涤纶织物K/S值的影响.分析了防泳移剂、黏合剂和渗透剂的加入对涤纶织物染色效果的影响,探讨了阳离子型固色剂对染色涤纶织物色牢度的影响,分析了染色...     

涤纶织物的增深整理

介绍了涤纶织物染深性较差的原因;采用低折射率增深剂对涤纶染色织物进行增深整理,可降低涤纶织物表面对光的反射率,提高织物的染色深度.通过正交试验,优化了增深整理工艺参数:增深剂用量50 g/L、180℃焙烘90 s,整理后织物K/S值达到28.89,升华牢度有所提高,但是吸收波长和色光均未发生改变.     

涤纶织物的热溶染色

试验自制液体分散染料183和黏合剂,再添加适量的增稠剂和防泳移剂,配制涤纶热溶染色溶液。考察了染色工艺和皂洗工序对织物K/S值、匀染性和色牢度的影响。结果表明,当黏合剂HD质量分数为2%、增稠剂PTF-A质量分数为0.3%、防泳移剂MP质量分数为2%,190℃焙烘60 s时,织物能获得较好的K/S值和匀染性,且色牢度优良。黏合剂HD和增稠剂PTF-A有利于提高K/S值和降低染色不匀度,防泳移剂MP能提高匀染性。     

涤纶织物靛蓝染料染色工艺的研究

采用靛蓝染料对涤纶织物进行低温染色,探讨了保险粉用量、烧碱用量、苯甲醇用量、染料用量和染色温度、时间对染色涤纶K/S值的影响,测试了涤纶织物染色牢度.结果表明:靛蓝染料用量2%(omf),保险粉用量25 g/L,烧碱用量4 g/L时染色效果较好,在100℃时加入苯甲醇10 m L/L、90℃时加入苯甲醇20 m L/L和80℃时加入苯甲醇30 m L/L的条件下,染色涤纶织物均可获得与120℃相当的染色深度,染色织物耐摩擦色牢度均达3级以上,耐皂洗色牢度均达4级以上.     

E-BONY BLACK在涤纶仿真丝织物增深整理中的应用

介绍了细旦涤纶织物染深性差的原因,通过后整理助剂进行增深处理,改变涤纶纤维表面特性,降低涤纶折射率是提高其表观深色效果的有效方法.采用E-BONY BLACK增深剂处理超细涤纶染色织物,可降低涤纶对光的反射率,提高染色深度,探讨了E-BONY BLACK增深剂的增深原理,分析了增深剂用量、pH值、培烘温度和焙烘时间等对增深后织物表面深度K/S值和断裂强力的影响.采用正交试验优化了增深整理工艺:增深剂用量为6%,150℃焙烘30 s,溶液为弱酸性,经其整理的黑色涤纶仿真丝织物增深度可达25%.     

水性聚氨酯-丙烯酸酯乳液在超细涤纶涂料染色中的应用

用自制的包覆有酞菁蓝颜料的水性聚氨酯-丙烯酸酯复合乳液对超细涤纶织物进行涂料染色。通过改变黏合剂色浆用量、烘干和焙烘条件、交联剂和渗透剂用量,确定最佳染色工艺。试验发现,染色超细涤纶织物的得色量较高,织物柔软性好,K/S值达到5左右,干摩擦牢度可达4~5级,湿摩擦牢度可达5级,皂洗牢度中的褪色牢度和沾色牢度均达5级。     

竹/涤/棉混纺织物的涂料染色

采用涂料染色方法对竹/涤/棉混纺织物进行染色,探讨了工艺条件(焙烘温度、焙烘时间和黏合剂用量)的影响.试验结果表明,当黏合剂用量140 g/L、焙烘温度160 ℃、焙烘时间3 min时,染色织物的耐摩擦色牢度和耐洗色牢度最好.采用树脂与涂料同浴染色,能改善织物的耐摩擦色牢度.     

导电涤纶涂层织物的制备及其性能

为制备导电涂层织物,采用研磨分散法制备导电炭黑,研究了导电炭黑的用量、导电炭黑的粒径、涂层次数、黏合剂用量、焙烘时间以及温度对导电涤纶涂层织物性能的影响。对涤纶涂层织物的表面电阻、耐水洗牢度、耐摩擦牢度、断裂强力和断裂伸长率等性能进行测试。结果表明：当涂层胶中导电炭黑含量为 15%,导电炭黑粒径为 200nm,涂覆次数为 4 次,黏合剂相对导电炭黑分散体质量分数为40%,焙烘温度为150℃,焙烘时间为 3 min时制备的导电涤纶涂层织物的表面电阻最小, 导电涤纶涂层织物的干摩擦、水洗牢度均可达到 5 级,水洗后涤纶涂层织物的表面电阻变大。     

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.     

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     

INFOPRINT 2014 was Successfully Held in Dongguan

Sponsored by Printing and Printing Equipment Industries Association of China （PEIAC） and organized by Print China magazine, the Seventeenth Beijing International Printing Information Conference （INFOPRINT 2014） was successfully held on 11th Dec. 2014 at Dongguan Exhibition International Hotel.