2008年金属阳极电解槽质量信息交流会暨HG/T 3981-2007《复极式离子膜电解槽》标准宣贯会通知

为使氯碱企业具有选择优质设备的参考依据，达到节能降耗的目的，按照产品标准的要求，为协助金属阳极电解槽制造单位有效地控制产品的生产，稳定提高产晶质量，“石油和化学工业金属阳极及电解装备质量监督检验中心”组织开展了“参加金属阳极产品质量达标活动”。为对2008年参加金属阳极产品质量达标活动单位的质量管理考核和金属阳极产品质量型式检验的情况进行总结，宣传优质的金属阳极电解槽产品，现定于2008年7月25日至30日在拉萨市召开2008年金属阳极电解槽质量信息交流会。会议将公布达到质量管理考核要求和金属阳极产品质量型式检验合格的单位，分析金属阳极产品质量型式检验情况。受“化学工业机械设备标准化技术委员会”的委托，会议将对新颁布实施的HG/T3981-2007《复极式离子膜电解槽》标准进行宣贯。此标准由“蓝星(北京)化工机械有限公司”制定，它是离子膜电解槽制造企业质量控石油和化学工业金属阳极及电解装备质量监督检验中心二○○八年六月五日2008年金属阳极电解槽质量信息交流会暨HG/T 3981-2007《复极式离子膜电解槽》标准宣贯会通知$石油和化学工业金属阳极及电解装备质量监督检验中心     

金属阳极含钯涂层通过鉴定

太原化工厂和昆明贵金属研究所联合研制的氯碱工业电解槽金属阳极含钯涂层,于1982年4月在太原化工厂12M~2隔膜金属阳极电解槽上进行了工业化试验的技术鉴定。氯碱工业电解槽金属阳极含钯涂层是近年来国内外研究的一项新技术。太原化工厂和昆明贵金属研究所共同对含钯电极的涂层配方、涂制工艺、测试等进行了研究。该涂层电极及其在12M~2隔膜氯碱电解槽上的试验获得的主     

隔膜电槽的分布电压测量方法及探讨

通过对国内隔膜法金属阳极电解槽的调查,实感对现有隔膜电槽分布电压进行测量之必要。为加快金属阳极电解槽的推广、了解、掌握槽电压的分布规律,特向读者推荐关于隔膜电解槽分布电压的测量方法,供选择、设计金属阳极电解槽槽型,提供有关参考数据。     

优化制作工艺改善电解槽性能

主要从隔膜法电解槽的扩张阳极及涂层技术、阴极节能结构和活化技术、改性隔膜方面阐述了隔膜法电解槽所采用的新扩张阳极等新工艺、新技术，达到节能降耗，增加经济效益。     

降低改性隔膜金属阳极电解槽电耗的几点做法

我厂是国内最早投入生产运行金属阳极隔膜电解槽厂家之一。早在1974年就改造投产了48台“30—Ⅰ”型金属阳极电解槽,到1981年初全厂石墨阳极隔膜电解槽184台全部改造成金属阳极隔膜电解槽,成为全国氯碱行业中首先全部采用金属阳极电解槽生产烧碱的企业,当时烧碱年产量已达10万吨。由于受当时条件限制,电解槽露天布局,     

加快隔膜法电解技术进步增强企业竞争力

总结了隔膜法电解槽的阳极涂层技术。结构，阴极活化技术，隔膜和盐水精制等的技术进步情况。阐述了隔膜法电解技术的发展方向。     

科技信息

无锡县雪浪氯碱设备厂试制的 DBX—系列三元涂层金属阳极隔膜电解槽,7月31日在无锡通过省级鉴定。该项目是省计经委下达的新产品开发指导性计划项目。它采用了化工部锦西院的三元涂层技术,将原有的二元涂层(钌、钛涂层)金属阳极改进为三元涂层(钉、钛、锡涂层)金属阳极,提高了阳极的电催     

使用高效助沉剂提高精盐水质量试验

国内外采用隔膜法生产氯碱均占很大比例,在我国接近80％,20多年来,电槽由石墨作阳极改为金属阳极以后,大大地推进了氯碱工业的发展。金属阳极(涂层)寿命一般为5～6年,而原有之普通石棉隔膜一般使用4～6个月就需更换。因此,隔膜电槽生产的矛盾就转移到隔膜上来了。金属阳极多采用高电流密度下操作,以提高生产强度。而普通石棉隔膜易溶胀,寿命较之阳极短10多倍,不能承受较为苛刻的运行条件,限制了人们为了节电而采用小极距(扩张阳极)的技术,从而大大影响了金属阳极隔膜电解槽发挥其优越性。     

提高金属阳极使用寿命的措施

1、金属阳极电槽每停车9次左右，阳极损失针层相当于金属阳极电解槽运行一年的损失量。因此保证金属阳极电解槽长周期稳定运转尤为重要。这主要是反向电流作用的结果，因此停车后及时采取低电流直流保护可起到减少涂层中钉损失作用。Zx停车时将阳极室残余氯气尽可能的抽净，避免氯气溶解在置换碱性谈盐水中生成NaC们腐蚀针层。实践证明，停车时氯压机晚停30min，阳极室氧气即可达到＜5％，这样做对保护阳极涂层有益。3、提高隔膜的制作质量，减少OH-反渗生成NaClO在阳极区反应形成[O]腐蚀针层。要求隔膜均匀一致，阳极液氨酸盐低于5g/l…     

国家经贸委批准发布 12项有关化工装备行业标准

国家经贸委于２００２年１月２４日批准发布一批新的化工行业标准 ,其中有关１２项化工装备行业标准如下 :序号标准编号标准名称代替或废止标准号１ＨＧ２４３２ -２００１搪玻璃设备技术条件ＨＧ２４３２-１９９３２ＨＧ/Ｔ２４７１-２００１电解槽金属阳极涂层ＨＧ/Ｔ２４７１ -１９９３３ＨＧ/Ｔ２９５１-２００１隔膜法金属阳极电解槽ＨＧ/２９５１-１９９８４ＨＧ/Ｔ３１３９．１ -２００１釜用立式减速机型式和基本参数ＨＧ/Ｔ３１３９～３１４２ -１９７８ＨＧ/Ｔ３１３９．２ -２００１釜用立式减速机ＸＬ系列摆线针轮减速机ＨＧ/Ｔ…     

Insect antifeedant properties of anthranoids from the genusVismia

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.     

Direct observation of freeze-thaw instability of latex coatings via high pressure freezing and cryogenic SEM

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.     

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.     

Methyl 2,4,6-decatrienoates Attract Stink Bugs and Tachinid Parasitoids

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.     

2007～2008年世界塑料工业进展

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.     

2005～2006年国外塑料工业进展

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。