开封龙宇化工成为MC270稳产厂家

2011年12月9日上午，经过一个月的停车大修后，开封龙宇化工有限公司年产4万吨聚甲醛装置流程全部打通，并继续产出合格的MC270系列牌号产品。这标志着该公司成为国内少数能够掌握稳定产出MC270聚甲醛生产装置技术的厂家，也标志着该公司顺应市场需求，积极调整产品结构取得阶段性胜利。     

无卤增强聚酰胺阻燃性能出色

在近日举办的中国国际工博会上，沙特基础创新塑料公司推出采用高新技术生产的最新系列LNP Starflam纤维增强聚酰胺复合材料。据称，该材料具有出色的阻燃性，不含卤素。据介绍，该公司的LNP X—Gen Starflam Z270系列复合材料符合欧盟WEEE和Rolls等法规，具有出色的热性能和电气性能，还有易加工、外形美观及便于激光打标等特点。该复合材料将无卤阻燃与低烟性能集于一身，     

国内引进密炼机概况

引进的炼胶设备主要是密炼机及其上下辅机,个别也有引进一般性开炼机。引进的密炼机以轮胎厂使用的大型密炼机为主,其中尤以F270系列密炼机最多。从引进的公司看,主要是生产美国Farrel公司F系列密炼机的英国Farrel Bridge,日本神户制     

英国FARREL F270密炼机转子更换大修技术方案探讨

笔者所在公司F270密炼机是英国FARREL公司生产的产品,启用于1991年,担负着重要的生产任务。从2010年3月起,原装四棱ST转子开始出现频繁漏水现象,且轴颈根部、工作段腹部多处裂纹,裂纹长度超过1/3圆周。经过与FARREL公司技术交流后,确认转子属疲劳开裂,不能再继续使用,必须更换新转子。经与国内知名密炼机转子专业制造厂家     

开封龙宇化工成为MC270稳产厂家

2011年12月9日上午,经过一个月的停车大修后,开封龙宇化工有限公司年产4万吨聚甲醛装置流程全部打通,并继续产出合格的MC270系列牌号产品。这标志着该公司成为国内少数能够掌握稳定产出MC270聚甲醛生产装置技术的厂家,也标志着该公司顺应市场需求,积极调整产品结构取得阶段性胜利。     

回馈社会——阿博格向中国北京化工大学捐赠机器

日前，德国阿博格公司计划向中国北京化工大学（BUCT）提供一台S系列的机器用作实验和研究。据悉，捐赠仪式将在2006年4月24日举行。届时，北京化工大学杨为民教授将代表机电工程学院接受这台阿博格的ALLROUNDER 270 S机器。     

NBH300H斗式提升机尾部轴承 及配重装置的改进

<正>1提升机故障情况及原尾部结构1.1故障情况我公司水泥粉磨系统在2001年建成投产,出磨物料通过一台NBH300H斗式提升机输送到选粉机内。斗式提升机输送能力最高达270 t/h,料斗线速度88.1 m/min。生产中经常出现轴承损坏及滑板密封漏料的情况,污染环境并增加了工人的劳动强度,轴承损坏后直接影响到设备正常运转。经检查分析,夏季水泥生产时,出磨物料温度     

中瑞重型汽车合资项目建议书获批准

最近，国务院批准了中国重型汽车集团公司与瑞典沃尔沃卡车公司合资生产重型汽车项目建议书。该项目是我国重型汽车最大的合资项目。中国重型汽车集团公司（简称重汽公司）是我国最大的重型汽车生产基地，主要产品为斯太尔系列、黄河系列、红岩系列、延安系列、太脱拉系列载重8吨以上的各种卡车、载重5吨以上的各种越野车，以及各种重型专用汽车、大客车底盘及大客车。1996年生产各类重型汽车1，52万辆。瑞典沃尔沃卡车公司是世界上实力雄厚的第二大重型汽车生产企业，1997年生产重型汽车7万辆。合资公司将设在山东省济南市，利用重汽公司现…     

上海文高玻璃搪瓷色釉有限公司

上海文高玻璃搪瓷色釉有限公司是专业生产玻璃搪瓷色釉的企业。公司建立于1995年5月，在传统生产工艺的基础上，除了生产普通系列色釉产品外，还相继开发了晶珠系列、耐蚀系列、钢化系列、低温系列、热熔系列及无铅系列色釉产品，是全国生产玻璃搪瓷色釉产品品种最全、质量最优、销量最大的企业之一。     

电机轴承的维护与保养

通过对我公司多年电机设备维护、维修实际经验，以及国内轴承、润滑技术的发展．针对我公司电机轴承出现的问题提出有效的解决办法，延长了电机的使用寿命，节约了大量资金，确保了装置的连续运行，提高了生产效益，同时对电机轴承出现问题的原因及存在问题与对策加以分析和讨论。     

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。