RTV硅橡胶胶粘剂

介绍了国内外 Ｒ Ｔ Ｖ 硅橡胶胶粘剂的概况，叙述单组分、双组分硅橡胶的品种、组成、性能和用途，展望硅橡胶的发展前景     

硅橡胶绝缘材料运行特性及存在问题的分析

介绍了硅橡胶复合绝缘子在我国的应用情况，分析了室温硫化（RTV）硅橡胶和热硫化（HTV）硅橡胶的运行特性，在结合运行经验及现有技术水平的基础上指出了RTV硅橡胶和HTV硅橡胶存在的研究问题、改进性能的建议和发展方向。     

加成型液体硅橡胶概述

加成型液体硅橡胶与缩合型液体硅橡胶相比，具有卓越的优点。本文概述了加成型液体硅橡胶的基础原料、助剂、添加剂、催化剂刑、硫化机理及应用，综述了近年来开发的几种新型加成型液体硅橡胶及其应用。     

高性能热硫化硅橡胶的开发

简要介绍了硅橡胶的特性，回顾了美国道康宁公司和我国的热硫化硅橡胶开发历程，指出了我国的高性能硅橡胶存在的差距，提出了我国应积极开发高强度，多功能硅橡胶，以增强竞争力的建议。     

国外硅橡胶补强技术进展

总结了90年代以来国外在硅橡胶补强方面的研究进展，概述了生胶，交联剂，催化剂和填料四方面对硅橡胶物理机械强度的影响，简要阐述了硅橡胶的发展现状，补强机理以及硅橡胶补强的发展方向。     

用硅烷偶联剂预处理短纤维补强硅橡胶

用开炼机混炼法，研究了有机短纤维（聚芳砜纤维、聚酯纤维）和无机短纤维（碳纤维、玻璃纤维）对硅橡胶的补强作用，并用ＳＥＭ观察了微观形态。结果表明，用硅烷偶联剂预处理有机短纤维，改善了有机短纤维与硅橡胶的粘接，能显著硅橡胶的力学性能；无机短纤维红过混炼后，长度大大下降，对硅橡胶无补强作用。     

加成型硅橡胶灌封料流变性能的研究

研究了加成型硅橡胶灌胶封料的注性能。测定了硅橡胶灌封料的粘度，讨论了配制工艺条件及组份对硅橡胶灌封料流变性能的影响，分析了白炭黑在硅橡胶灌封料中的分散状态，实验结果表明，通过改进配制工艺条件，优化组分，可以制备出满足特定需要并具有高流动性的硅橡胶灌封料。     

水基硅橡胶

简要回顾了室温硫化硅橡胶及水基硅橡胶的发展过程，介绍了水基硅橡胶的制备方法及交联机理，并对其交联过程、性能及用途作了较详细的阐述。     

Wacker公司开发新的有机硅密封剂的加料系统

云南省橡胶制品研究所的谭岱云等人采用两段共混工艺制成了聚氨酯／硅橡胶共混物，研究了聚氨酯和硅橡胶的比例对其共混物性能的影响。结果表明，当硅橡胶的用量在20份以内、用DCP作硫化剂时，共混物具有较好的共硫化特性；当聚氨酯、硅橡胶的质量比为90／10时，共混物的拉伸强度、伸长率、耐磨性较佳；当聚氨酯、硅橡胶的质量比为85／15时，共混物的耐热性最好。     

道康宁硅橡胶张家港厂投运

美国道康宁公司在江苏省张家港市扬子江化学工业园内的硅橡胶厂，4月22日正式开业。新工厂占地6000m^2，投资数百万美元，是道康宁公司10年来全球硅橡胶领域内的最大项目。该厂采用世界上最先进的硅橡胶生产技术和最新的环保标准，生产固态硅橡胶和液态硅橡胶的新产品，为中国的汽车、电子、医疗保健、建筑、电力、胶粘剂等行业提供重要原料。硅橡胶是硅橡胶胶粘剂和硅橡胶密封剂的主要原料，也可用作其他胶粘剂的耐热、耐老化、抗冲击、耐水等性能的改性剂。     

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。