中,高温钛乳浊釉显微结构的研究

应用ＸＲＤ、ＴＥＭ、ＳＡＤ及ＥＤＳ等测试技术，系统地研究了ＴｉＯ２及烧成温度对Ｋ２Ｏ－Ｎａ２Ｏ－ＣａＯ－ＭｇＯ－ＺｎＯ－Ａｌ２Ｏ３－ＳｉＯ２系瓷釉显微结构的作用。结果表明，在１１４０－１２２０℃烧 ，瓷釉中都存在分相与析晶现象，液滴相富含Ｔｉ＾４＋、Ｃａ＾２＋、Ｚｎ＾２＋而基体玻璃相富含Ｓｉ＾４＋，析出的晶体主要为钛榍石。随烧成温度的提高，析出晶体的数量不断减少。另外，当ＴｉＯ２加入量增加时瓷釉的     

掺杂Cr2O3,MgO对C4A3形成及水化性能影响的研究

研究了掺杂Ｃｒ２Ｏ３，ＭｇＯ对Ｃ４Ａ３＾－Ｓ矿物形成及水化性能的影响。结果表明，在１３００℃保温１ｈ的煅烧条件下，掺加一定量的ＭｇＯ能促进Ｃ４Ａ３＾－Ｓ的形成，而Ｃｒ２Ｏ３则有稳定过渡产物ＣＡ的作用，从而减慢Ｃ４Ａ３＾－Ｓ的形成速率；在１３００℃保温３ｈ的煅烧条件下，掺中Ｃｒ２Ｏ３，ＭｇＯ均能使Ｃ４Ａ３＾－Ｓ的形成量增加。掺杂使Ｃ４Ａ３＾－Ｓ晶体主要以四方晶系的结构形式存在。在本实验条件下，掺杂可     

Cr3+:LiCaAlF6晶体提拉法生长的研究

在国内首次报道熔体提拉法生长Ｃｒ＾３＋：ＬｉＣａＡｌＦ６晶体的研究。晶体生长工艺中不用ＨＦ流动气氛的铂金炉膛。研究出质量较好的尺寸达Φ（２０－２５）ｍｍ×（９０－１２０）ｍｍ的晶体。测定晶体对８０９ｎｍ红外波段的吸收关系数μ为１０＾－２量级，晶体中无ＯＨ＾－，对于熔体的富Ｌｉ组成，ＣｒＦ３对氧化作用的敏感以若干晶体缺陷生长工艺的关系等方面进行了讨论。     

用掺杂方法提高α—FeOOH表观密度

在用碱法制备α－ＦｅＯＯＨ，进而合成γ－Ｆｅ２Ｏ３磁粉的过程中，经常加入Ｚｎ＾２＋离子以改善磁粉粒的针形，但因Ｚｎ＾２＋离子的电荷少于Ｆｅ＾３＋离子，因而能使α－ＦｅＯＯＨ晶体产生缺陷，最终影响磁粉的性能，本文通过在制备α－ＦｅＯＯＨ过程中掺入杂质Ｍｎ＾２＋的方法，探讨消除α－ＦｅＯＯＨ晶体缺陷，提高其表观密度，改善磁粉性能。     

4,5—二氮杂芴—9—十六亚胺单分子膜诱导下五水合硫酸铜晶体的定…

研究了在４，５－二氮杂芴－９－十六亚胺（Ｌ）单分子膜诱导下五水合硫酸铜（ＣｕＳＯ４．５Ｈ２Ｏ）晶体的定向生长。在Ｌ单分子膜的存在下，经膜界面的诱导成核，可得到定向排列、十分规则的ＣｕＳＯ４．５Ｈ２Ｏ晶体，其外形与通常所得到的晶何不同。（０１０）晶面为其诱导面，在通常的水溶液中所得到晶体的主要晶面中，交无此特殊晶面。在这一定向生长过程中，膜和Ｃｕ＾２＋之间的作用，诸如离子作用，晶格匹配，立体化学识别     

硅酸铋晶体的结晶习性与形貌

从结晶化学角度出发，研究了熔体提拉法生长硅酸铋（ＢＳＯ）晶体的结构与形貌，提出晶体的生长基元为［ＢｉＯ６］ｎ＾９－和［Ｂｉ１２ＳｉＯ３６］ｎ＾３２－负离子配位多面体的论点。研究了晶体中各族晶面的显露程度与［ＳｉＯ４］ｎ＾４－四面体结晶方位的对应关系，晶体中的正极面与硅氧四面体面平等；四面体的顶角正在对负极面。     

氯化钡在热法氯化镓生产中的防腐作用

本文介绍了热法氯化铵生产中，通过添加－定量的ＢａＣｌ２与蒸发液中的ＳＯ＾２－４反应，生成ＢａＳＯ４沉淀，沉淀晶体涂覆在奥氏体不锈钢金属体表面，形成致密垢层，阻止金属体的进一步腐蚀，实现了保护设备和清除蒸发液中ＳＯ＾２－４离子的双重愿望。     

氯化钾芒硝转化法制硫酸钾的放大试验

根据Ｋ＾＋、Ｎａ＾＋、Ｃｌ＾－∥ＳＯ４＾２－－Ｈ２Ｏ体系相图，在小试基础上，放大试验，用工业品氯化钾和工业品硫酸钠通过二步法制取硫酸钾。在实验室条件下，制取了符合ＺＢＧ２１００６－８９标准的一等品硫酸钾及符合ＧＢ５４６２－８５标准的二级品氯化钠。     

合成对羟基苯甲酸丁酯的催化剂研究

综述了结晶硫酸铁、浓硫酸（在微辐照条件下进行）、ＳＯ４＾２－／ＴiＯ２－Ａ１２Ｏ －Ａ１２Ｏ３、ＴｉＳｉＷ１２Ｏ４０／ＴｉＯ２、Ｓｏ４＾２－／膨润土、磷钨杂多酸等主种不同催化剂催化合成对羟 基苯甲酸丁酯的实难结果。研究表明，ＳＯ４＾２－／ＴiＯ２－Ａ１２Ｏ３及ＴiＳiＷ１２Ｏ４０／ＴiＯ２是合成对羟基苯甲酸丁酯的理想催化剂 ，具有实际应用价值。     

钽酸锂晶体波导基片光损伤的研究

用硅钼棒作加热体，用熔体提拉法生长了ＬｉＴａＯ３晶体，晶体的双折射梯度可达１０＾－５ｃｍ＾－１数量级。用质子交换法制作了ＬｉＴａＯ３光波导基片，其抗光损伤能力高于ＬｉＮｂＯ３，是优良的杨光学和非线性光学材料。     

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。