超细BaTiO3粉体成瓷技术研究

基于液相化学共沉淀法合成超细ＢａＴｉＯ３粉末，研究了制备ＰＴＣ ＢａＴｉＯ３陶瓷的成瓷技术。利用ＸＲＤ和ＳＥＭ分析手段，对制备的ＢａＴｉＯ３陶瓷的结构进行了表征。对于影响ＢａＴｉＯ３陶瓷的主要性能，如致密化、ＰＴＣ效应和半导化性能的工艺参数进行了较为详细的研究和讨论。     

用金属有机化合物制备铁电薄膜：工艺及进展

本文概述了以金属有机化合物为原料制备铁电薄膜的工艺过程、工艺特点及最新研究进展，着重介绍了金属有机物化学气相溶积（ＭＯＣＶＤ），金属有机物热分解（ＭＯＤ）以及溶胶－凝胶（Ｓｏｌ－Ｇｅｌ）三种制备技术在铁电薄膜制备领域中的应用。     

超细BaTiO3粉的液相合成技术研究

把快速混合技术运用于草酸盐沉淀法，制备了超细ＢａＴｉＯ３颗粒。运用ＸＲＤ，ＴＥＭ等测试手段，研究了制备超细ＢａＴｉＯ３粉末前驱体的液相合成工艺条件，过程规律及相应的表面处理技术。     

电子陶瓷粉BaTiO3的液相合成技术：Ⅱ前驱体草酸氧钛钡热分解机理研究

本文对液相合成ＢａＴｉＯ３的前驱体草酸氧钛钡采用ＩＲ、ＸＲＤ分析手段跟踪不同分解温度下其组分及晶型的变化规律，结合ＭＲ－ＧＣ、ＤＴＡ和ＴＧ等分析结果，阐述了草酸氧钛钡的热分解机理。分析结果表明前驱体在２００℃之前除四份结晶水成无定形，２２０－４７０℃时是无水草酸氧钡分解为ＢａＣＯ３和ＴｉＯ２并放出ＣＯ、ＣＯ２气体，７５０℃时是固相ＢａＣＯ３和ＴｉＯ２之间的反应生成立方晶型的ＢａＴｉＯ３，在１０００     

pH值对Ti（O^nBu）4—Ba（OAc）2水解法合成BaTiO3粉体性能的影响

以乙酸和氢氧化钾为辅助原料，通过Ｔｉ（Ｏ＾ｎＢｕ）４－Ｂａ（ＯＡｃ）２水解法合成ＢａＴｉＯ３粉体。借助ＳＥＭ、ＴＥＭ、ＸＲＤ和ＥＰＭＡ等分析手段，研究了ＰＨ值对ＢａＴｉＯ３粉体性能的影响。论述了合成ＢａＴｉＯ３的反应机理，同时探讨了ＰＨ值对其反应机理的影响。     

用MOCVD方法制备TIO2薄膜：工艺及进展

本文概述了用金属有机物化学气相沉积（ＭＯＣＶＤ）的方法制备了ＴＩＯ２薄膜的原理工艺过程用工艺特点，并指出了最新研研进展和存在的问题以今后及发展方向。     

正丁醇钛—乙酸钡水解法合成BaTiO3粉体的研究

本文着重研究了Ｔｉ（Ｏ＾ｎＢａ）４－Ｂａ（ＤＡｃ）２水解法合成高纯超细ＢａＴｉＯ３粉体的制备工艺。借助ＴＧＤＴＡ，ＸＲＤ，ＴＥＭ，ＳＥＭ，ＳＡＸＳ和ＩＣＰ－ＡＥＳ等分析手段，研究了ＰＨ值，Ｂａ／Ｔｉ比和（Ｂａ／Ｔｉ）比，反应温度，浸泡处理等对ＢａＴｉＯ２粉体性能的影响，采用本工艺方法合成的ＢａＴｉＯ３粉体，纯度达９９．８０ｗｔ％，比表面积为６８ｍ＾２／ｇ，一次粒子平均粒径４６．７ｎｍ，二次粒子粒径     

pH值对Ti（O~nBu）_4－Ba（OAc）_2水解法合成BaTiO_3粉体

以乙酸和氢氧化钾为辅助原料，通过Ｔｉ（Ｏ￣ｎＢｕ）＿４－Ｂａ（ＯＡｃ）＿２水解法合成ＢａＴｉＯ＿３粉体。借助ＳＥＭ、ＴＥＭ、ＸＲＤ和ＥＰＭＡ等分析手段，研究了ｐＨ值对ＢａＴｉＯ＿３粉体性能的影响。论述了合成ＢａＴｉＯ＿３的反应机理，同时探讨了ｐＨ值对其反应机理的影响。     

二胺替比林基溴代苯甲烷的合成及其分析应用的研究

合成了ＤＡｏＢＭ、ＤＡｍＢＭ、ＤＡｐＢＭ３个二安替比林甲烷芳香族衍生物,其中ＤＡｏＢＭ和ＤＡｍＢＭ为首次合成。研究了Ｈ３ＰＯ４介质中和Ｍｎ（Ⅱ）存在下其与Ｃｒ（Ⅵ）、Ｖ（Ⅴ）、Ｃｅ（Ⅳ）、Ｍｎ（Ⅶ）的显色反应,开发了几个试剂的应用体系,显示了良好的应用前景。     

电子陶瓷粉BaTiO_3的液相合成技术Ⅰ．前驱体草酸氧钛钡形成机理及制备技术研究

本文在分析草酸氧钛钡形成机理的基础上，提出ＴｉＯ￣（２＋）与草酸混合，控制一定的ｐＨ值，首先生成（ＮＨ＿４）＿２［ＴｉＯ（Ｃ＿２Ｏ＿４）＿２］配合物，然后与ＢａＣｌ＿２溶液进行复分解反应制备ＢａＴｉＯ＿３的前驱体——草酸氧钛钡的新工艺。用化学分析法对前驱体Ｂａ／Ｔｉ比进行分析，采用ＸＲＤ、ＳＥＭ，ＢＩ—９０激光散射粒度仪对前驱体的晶型，颗粒大小，形貌以及粒径分布进行分析。结果表明：用该法所合成的前驱体组分确定，粒径小，分布窄，近似球形，煅烧后为高纯的ＢａＴｉＯ＿３。     

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。