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通过正交试验确定三只Megafix BES活性染料的工艺参数,对其色牢度、鲜艳度、色深值、色差值进行了测试。实验结果表明,这三只Megafix BES染料染棉织物适合的工艺为:染浴浓度2%;元明粉30g/l:纯碱15g/l;初染温度60℃;染色时间30分钟,固色温度70℃;固色时间50分钟:浴比1:25。 相似文献
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使用BES活性染料对大豆纤维进行溢流染色.染色温度65℃.中浅色染色时间50分钟.硫酸钠的使用量为10g/1-50g/l,固色时使用Na2CO3为5g/1-15g/l,染品一等品率95%.在车间生产条件下.染机车速、升温速度、加盐速度是影响染品质量的重要因素。 相似文献
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考察了工程放大效应对沥青基球状活性炭的制备工艺及其性能的影响。发现:在2L的成球釜中115℃,0.2MPa条件下沥青颗粒能成沥青球,但在500L的成球釜中成球温度需提高至145℃、压力为0.6MPa方能成球;当含萘沥青颗粒投入成球釜中,即使温度高于110℃,沥青颗粒仍难以成球;在2%PVA溶液中添加体积分数20%~80%的已用过的PVA溶液,有利于含萘沥青颗粒的成球;以3℃/min的升温速率由300℃直接升至1000℃再恒温10~30min,沥青球的强度最高,可达95.4%;以煤沥青为原料一次能制备出3kg,BET比表面积为1437m^2/g,强度为95%,表面pH值为7.3的沥青基球状活性炭。 相似文献
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活性染料诺威克隆红FN-3GL上染丝绸,结果发现诺威克隆红FN-3GL对丝绸有较好的直接性,当染色温度为80℃、硫酸钠60 g/L、小苏打10 g/L固色、浴比1∶30的条件下,该染料上染丝绸固色率可达80%以上,耐洗及耐摩擦色牢度均在4级左右,且染得丝绸织物颜色鲜艳。 相似文献
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HN—型高固色率活性染料的低盐染色法 总被引:8,自引:0,他引:8
HN-型高固色率活性染料红HN-2B,金黄HN-R,深蓝HN-2G,其吸色率在95%以上,固色率在85%左右。以几种不同的染色,用HN-型高固色率活性染料对棉纱及棉布进行了染色,染色结果表明,在中温下,该活性染料可以采用低盐染色。当盐的加入量减少为30g/L (是标准加入量的1/2),其最适宜的染色条件:浴比1:20,染色深度3%,40℃上梁,60℃固色,氯化钾20g/L和柠檬酸三钠为10g/L,碱磷酸三钠的加入量为4+10g/L时,其K/S值下降百分数:红HN-2B为10.16;金黄HN-4为5.57,深蓝HN-2G为8.57。 相似文献
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直接染料对甲壳胺纤维的染色性能 总被引:9,自引:1,他引:9
探讨了中性盐、温度、染料用量对甲壳胺纤维直接染料染色性能的影响,比较了脱脂棉和甲壳胺纤维的染色性能。实验结果表明:中性盐对染料的影响与染料的磺酸基的数目有关,对4~6个磺酸基,中性盐起促染作用.对双磺酸基,起缓染作用:而在70℃时染色的上染速度明显快于40℃,染料浓度在2%时几乎尽染,当上升到8%时上染率仍在70%以上;甲壳胺纤维的上染速度和上染率明显高于棉,其可染性、染色速度、表观染色深度远高于棉易产生染色不匀现象。 相似文献
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用酸性染料染色后的尼龙66样品置于试验主染色机中,用合成丹宁进行后处理,浴比:1:20。合成丹宁的用量为2%(o.w.f),用醋酸调节PH至3.5-4。处理浴比的温度为40℃,然后升温至80℃,保温30分钟。测色结果显示:经处理后的染色尼龙66明显改善了其湿处理牢度和强物的沾色性能。 相似文献
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M. S. J. Simmonds W. M. Blaney F. Delle Monache M. Marquina Mac-Quhae G. B. Marini Bettolo 《Journal of chemical ecology》1985,11(12):1593-1599
Vismiones and ferruginins, representatives of a new class of lypophilic anthranoids from the genusVismia were found to inhibit feeding in larvae of species ofSpodoptera, Heliothis, and inLocusta migratoria. 相似文献
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Cheng-Le Zhao Shane Porzio Alan Smith Haiyan Ge H. T. Davis L. E. Scriven 《Journal of Coatings Technology and Research》2006,3(2):109-115
Despite its industrial importance, the subject of freeze-thaw (F/T) stability of latex coatings has not been studied extensively.
There is also a lack of fundamental understanding about the process and the mechanisms through which a coating becomes destabilized.
High pressure (2100 bar) freezing fixes the state of water-suspended particles of polymer binder and inorganic pigments without
the growth of ice crystals during freezing that produce artifacts in direct imaging scanning electron microscopy (SEM) of
fracture surfaces of frozen coatings. We show that by incorporating copolymerizable functional monomers, it is possible to
achieve F/T stability in polymer latexes and in low-VOC paints, as judged by the microstructures revealed by the cryogenic
SEM technique. Particle coalescence as well as pigment segregation in F/T unstable systems are visualized. In order to achieve
F/T stability in paints, latex particles must not flocculate and should provide protection to inorganic pigment and extender
particles. Because of the unique capabilities of the cryogenic SEM, we are able to separate the effects of freezing and thawing,
and study the influence of the rate of freezing and thawing on F/T stability. Destabilization can be caused by either freezing
or thawing. A slow freezing process is more detrimental to F/T stability than a fast freezing process; the latter actually
preserves suspension stability during freezing.
Presented at the 82nd Annual Meeting of the Federation of Societies for Coatings Technology, October 27–29, 2004 in Chicago,
IL. Tied for first place in The John A. Gordon Best Paper Competition. 相似文献
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Ethanol and (−)-α-Pinene: Attractant Kairomones for Bark and Ambrosia Beetles in the Southeastern US
In 2002–2004, we examined the flight responses of 49 species of native and exotic bark and ambrosia beetles (Coleoptera: Scolytidae
and Platypodidae) to traps baited with ethanol and/or (−)-α-pinene in the southeastern US. Eight field trials were conducted
in mature pine stands in Alabama, Florida, Georgia, North Carolina, and South Carolina. Funnel traps baited with ethanol lures
(release rate, about 0.6 g/day at 25–28°C) were attractive to ten species of ambrosia beetles (Ambrosiodmus tachygraphus, Anisandrus sayi, Dryoxylon onoharaensum, Monarthrum mali, Xyleborinus saxesenii, Xyleborus affinis, Xyleborus ferrugineus, Xylosandrus compactus, Xylosandrus crassiusculus, and Xylosandrus germanus) and two species of bark beetles (Cryptocarenus heveae and Hypothenemus sp.). Traps baited with (−)-α-pinene lures (release rate, 2–6 g/day at 25–28°C) were attractive to five bark beetle species
(Dendroctonus terebrans, Hylastes porculus, Hylastes salebrosus, Hylastes tenuis, and Ips grandicollis) and one platypodid ambrosia beetle species (Myoplatypus flavicornis). Ethanol enhanced responses of some species (Xyleborus pubescens, H. porculus, H. salebrosus, H. tenuis, and Pityophthorus cariniceps) to traps baited with (−)-α-pinene in some locations. (−)-α-Pinene interrupted the response of some ambrosia beetle species
to traps baited with ethanol, but only the response of D. onoharaensum was interrupted consistently at most locations. Of 23 species of ambrosia beetles captured in our field trials, nine were
exotic and accounted for 70–97% of total catches of ambrosia beetles. Our results provide support for the continued use of
separate traps baited with ethanol alone and ethanol with (−)-α-pinene to detect and monitor common bark and ambrosia beetles
from the southeastern region of the US. 相似文献
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Halyomorpha halys (Stål) (Pentatomidae), called the brown marmorated stink bug (BMSB), is a newly invasive species in the eastern USA that is rapidly spreading from the original point of establishment in Allentown, PA. In its native range, the BMSB is reportedly attracted to methyl (E,E,Z)-2,4,6-decatrienoate, the male-produced pheromone of another pentatomid common in eastern Asia, Plautia stali Scott. In North America, Thyanta spp. are the only pentatomids known to produce methyl 2,4,6-decatrienoate [the (E,Z,Z)-isomer] as part of their pheromones. Methyl 2,4,6-decatrienoates were field-tested in Maryland to monitor the spread of the BMSB and to explore the possibility that Thyanta spp. are an alternate host for parasitic tachinid flies that use stink bug pheromones as host-finding kairomones. Here we report the first captures of adult and nymph BMSBs in traps baited with methyl (E,E,Z)-2,4,6-decatrienoate in central Maryland and present data verifying that the tachinid, Euclytia flava (Townsend), exploits methyl (E,Z,Z)-2,4,6-decatrienoate as a kairomone. We also report the unexpected finding that various isomers of methyl 2,4,6-decatrienoate attract Acrosternum hilare (Say), although this bug apparently does not produce methyl decatrienoates. Other stink bugs and tachinids native to North America were also attracted to methyl 2,4,6-decatrienoates. These data indicate there are Heteroptera in North America in addition to Thyanta spp. that probably use methyl 2,4,6-decatrienoates as pheromones. The evidence that some pentatomids exploit the pheromones of other true bugs as kairomones to find food or to congregate as a passive defense against tachinid parasitism is discussed. 相似文献
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中蓝晨光化工研究院有限公司《塑料工业》编辑部 《塑料工业》2009,37(3)
收集了2007年7月~2008年6月世界塑料工业的相关资料,介绍了2007~2008年国外塑料工业的发展情况,提供了世界塑料产量、消费量及全球各类树脂的需求量及产能情况.按通用热塑性树脂(聚乙烯、聚丙烯、聚苯乙烯、聚氯乙烯、ABS树脂)、工程塑料(尼龙、聚碳酸酯、聚甲醛、热塑性聚酯、聚苯醚)、特种工程塑料(聚苯·硫醚、液晶聚合物、聚醚醚酮)、通用热固性树脂(酚醛、聚氨酯、不饱和聚酯树脂、环氧树脂)不同品种的顺序,对树脂的产量、消费量、供需状况及合成工艺、产品应用开发、树脂品种的延伸及应用的进一步扩展等技术作了详细介绍. 相似文献
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中蓝晨光化工研究院《塑料工业》编辑部 《塑料工业》2007,35(3):1-25,67
收集了2005年7月~2006年6月国外塑料工业的相关资料,介绍了2005—2006年国外塑料工业的发展情况。提供了世界塑料产量、消费量及全球各类树脂生产量以及各国塑料制品的进出口情况。作为对比,介绍了中国塑料的生产情况。按通用热塑性树脂(聚乙烯、聚丙烯、聚苯乙烯、聚氯乙烯、ABS树脂)、工程塑料(聚酰胺、聚碳酸酯、聚甲醛、热塑性聚酯、聚苯醚)、通用热固性树脂(酚醛、聚氨酯、不饱和树脂、环氧树脂)、特种工程塑料(聚苯硫醚、液晶聚合物、聚醚醚酮)的品种顺序,对树脂的产量、消费量、供需状况及合成工艺、产品开发、树脂品种的延伸及应用的扩展作了详细的介绍。 相似文献