油套管管体加工车床辅机工装优化

吐哈油田公司机械厂180加工生产线自2007年投入生产以来，年产油套管上万余吨，由于螺纹加工采用的是日本产的车床，车床加工精度高，螺纹参数便于控制，对车床辅机要求较高，与车床相配合的辅机为国内车床辅机，该辅机由步进梁、支撑辊道、送料辊道、三部分构成。     

粉末丁腈橡胶的生产现状和发展前景

粉末丁腈橡胶（PNBR）属于丁腈橡胶（NBR）中的一类。主要用作树脂改性剂，在橡胶并用制品领域占有重要地位。与块状胶相比，由于其粒径小，分散性好，便于与加工助剂或树脂粉掺混后直接挤出或注塑成型，为加工成形的连续化、自动化创造了条件，从而减少了加工设备，节省能耗，减轻了劳动强度。     

如何使冷却系统节能及减少维护

当前不利的经济环境迫使塑料加工商不得不减产，此时采用普通水泵电机的冷却系统就显现出难于维护的弊端，同时，加工商也迫切需要冷却系统更加节能以利于降低生产成本。为此，加工商有必要采用具有新式水泵电机的冷却系统，以达到既节能又便于维护的目的。     

变温蒸发法加工盐碱矿的理论分析

本文根据ＮａＣｌ、Ｎａ_２ＣＯ_３在水中的溶解度规律提出了变温蒸发法用于盐碱矿的加工，确定了工艺参数，并用多温相图对这一过程进行了理论分析。分析表明，该法用于盐碱矿加工分离具有流程简单、原料利用完全、产品质量易于保证、便于工业实施等特点，是盐碱矿加工较理想的方法。     

空调器铜翅片专用模具设计与实验研究

通过对热交换器工作环境的分析和对其性能的研究，以铜翅片替代铝翅片既可以提高空调器制冷效率、又可增加防腐蚀能力。在参考国内铝翅片加工级进模研究理论的基础上，设计了铜翅片加工专用模具。整套模具采用子模分立式的设计方案，各凸、凹模采用分开加工方法，使相同结构尺寸的模具具有结构互换性，可降低加工成本且便于维护。同时进行了加工实验，验证了此模具结构的合理性和可行性，且具有“一模两用”的优点。     

单刀液压切胶机安装维护检修

1．概述1．1用途单刀液压切胶机的用途是在翻胎胶料加工中，将经过均匀预热的天然橡胶或合成橡胶胶块切割成便于用炼胶机塑炼的小胶块。     

粉末丁腈橡胶（PNBR）的应用开发

１主要性能粉末丁腈橡胶与块状胶相比，粉末橡胶的粒径为０．３～０．６ｍｍ，由于其粒径小，在加工应用上，便于与加工助剂或树脂粉掺混，实现粉末干混，其分散性好，易于实现自动化，加工时不需热塑炼，减少了混炼时间和节约能量，并可直接与配合剂混合进行挤出或注塑，应用粉末橡胶，可改善加工性能，劳动环境，操作温度较低，并可提高制品质量。２实际应用粉末丁腈橡胶属于丁腈橡胶的一类，其应用范围大致如下：（１）粘合剂ＰＮＢＲ含有极性基团—ＣＮ，与环氧、酚醛树脂等有良好的相容性，它们相配合可以制成性能优越的结构胶粘剂。结…     

数字化调整在硫化机机械手上的应用

对硫化机机械手结构进行了改进,改进后的机械手能够减小工人劳动强度．提高重复列中精度,避免后期人为干预设备精度,且机械手重量减轻,便于加工,缩短加工周期。     

天然橡胶加工技术的进展

论述了近十多年来天然橡胶加工技术的发展情况。介绍了国外天然橡胶生产厂在改革传统加工技术的同时,研究并发展改性橡胶新品种,以便于橡胶制品工业生产操作和适应橡胶制品质量的要求。还介绍了我国天然橡胶加工技术的现状和发展。     

工业固体废物的环境管理（摘要）

工业固体废物的环境管理（摘要）石青（国家环保局）工业固体废物系工业生产、加工、燃料燃烧，矿物采选，交通运输以及环境治理工程中所丢弃的固体，半固体物质的总称。为了便于环境管理，美国等也将容器盛装的具有毒性、易燃性、腐蚀性、化学反应性、感染性的液体、气体...     

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。