含钡或锶的硫铝酸盐装饰水泥

研究了几种常用着色剂以含Ｃａ或Ｓｒ的硫铝酸盐产矿物的着色情况，发现Ｃｒ２Ｏ３着色效果较好。对于白色单矿物，其Ｆｅ２Ｏ３的最大允许含量依次为；３ＣＡ．ＳｒＳＯ４〉３ＣＡ．ＢａＳＯ４〉３ＣＡ．ＣａＳＯ４．３ＣＡ．ＳｒＳＯ４浆体固化后几乎不起霜；３ＣＡ．ＢａＳＯ４浆体发现在水化早期起霜。     

液膜分离富集测定镓

用ＴＯＰＯ「（Ｃ８Ｈ１７）３ＰＯ」为流动载体,Ｎ２０５为表面活性剂,液体石蜡为膜增强剂,正己烷为膜溶剂,Ｈ２Ｃ２Ｏ４作内相试剂的乳状液膜体系,迁移富集Ｇａ＾３＋,研究了乳状液膜的稳定性、温度、Ｇａ＾３＋的浓度、外相ｐＨ值、乳水比（Ｒｅｗ）、油内比（Ｒｏｉ）等因素对富集Ｇａ＾３＋的影响。实验结果表明,在适宜的条件下,Ｇａ＾３＋的富集率可达９９．５％～１００．５％,在相同条件下,常见共存的Ｃｕ＾２＋、Ｃｏ＾２＋、Ｎｉ＾２＋、ＭｎＡ＾２＋、Ｆｅ＾３＋、Ａｌ＾３＋、Ｃｒ＾３＋、Ｔｉ＾４＋、Ｚｒ＾４＋、Ｐｂ＾２＋、Ｚｎ＾２＋、碱金属离子、碱土金属离子等不被迁移富集;大量Ｃｌ＾－、Ｆ＾－、、ＮＯ３＾－、ＳＯ４＾２－、ＰＯ４＾３－等都不影响Ｃａ＾３＋的富集,高式样应预先用氯化氢除硅,以防止影响迁移富集Ｇａ＾３＋,只ａ＾３＋可     

高效液膜分离富集镍基合金镀层中稀土总量

用ＴＢＰ－ＴＴＡ（协同流动载体）、ＳＰＡＮ８０和煤油高效液膜体系，研究∑ＲＥ＾３＋迁移行为。在适宜条件下，１０ｍｉｎ内，∑ＲＥ＾３＋的迁移率达９９．５％以上。在同样条件下，常见共存金属离子如Ｆｅ＾３＋、Ａｌ＾３＋、Ｎｉ＾２＋、Ｃｒ＾３＋、Ｍｏ＾６＋、Ｃｕ＾２＋、Ｃｏ＾２＋、Ｚｎ＾２＋、Ｃｄ＾２＋等均不被迁移；大量碱金属、碱土金属、Ｃｌ、ＮＯ３、ＣｌＯ４、Ｆ、ＳｉＯ３＾２－、ＳＯ４＾２－等离子也不影     

铝酸盐矿物对氯氧镁水泥的影响

本讨论了铝酸盐矿物对氯氧镁水泥的水化产物、耐水性和强度的影响。通过ＸＲＤ相分析，证明了具有水化活性的铝酸盐矿物（如ＣＡ，Ｃ４ＡＦ等）对氯氧镁水泥的水化相有影响；而没有水化活性的铝酸盐矿物（如Ｃ２ＡＳ）对氯氧镁水泥的水化相没有影响。当氯氧镁水泥中ＭｇＯ／ＭｇＣｌ２摩尔比大于５时，含有ＣＡ或Ｃ４ＡＦ的净浆硬化体中主要水化相是３·１·８相，而不含ＣＡ或Ｃ４ＡＦ或含Ｃ２ＡＳ的净浆硬化体中主要水化相是５·     

液膜法分离富集,测定水中微量锶

用状液膜体系对锶进行分离富集，该体系包括协同流动载体（ＰＭＢＰ、ＴＢＰ）、表面活性剂（ＳＰＡＮ８０）、增强剂（丙三醇）、溶剂（正己烷）和内相（１．２ｍｏｌ／Ｌ的盐酸溶液）。实验表明，在适宜的条件下，锶的富集效率可达９９．５％以上，而在此条件下许多共存离子，如Ｆｅ＾３＋、Ａｌ＾３＋、Ｃａ＾２／、Ｍｇ＾２＾＋、Ｃｒ＾３＋、Ｃｏ＾２＋、Ｎｉ＾２＋、Ｚｒ＾４＋、Ｃｕ＾２＋、Ｚｎ＾２＋、Ｐｂ＾２＋和ＲＥ＾３     

一次低烧SrTiO3基晶界层电容器的研究

研究了以Ｌｉ２ＣＯ３为助烧结剂、Ｓｒ（Ｌｉ１／４Ｎｂ３／４）Ｏ３为施主掺杂剂、Ｂｉ２Ｏ３和ＳｉＯ２为晶界绝缘剂的ＳｒＴｉＯ３基晶界层电容器的一次低温烧成技术。初步探索了Ｔｉ／Ｓｒ比值、施主掺杂剂、绝缘剂对显微结构及介电性能的影响。在１１５０℃烧成温度下，获得了εａｐｐ〉３．５×１０＾４；ｐ〉１．０×１０＾１１Ω·ｃｍ；ｔｇδ〈１．０％；ΔＣ／Ｃ〈±５．０％（－２５￣＋８５℃）的ＳｒＴｉＯ３基晶界层     

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     

用[BF4]作释放剂螯合滴定法测定铝

提出了用「ＢＦ」＾－作释放剂，选择性螯合滴定法测定试样中的铝含量。方法基于加入过量的ＣＤＴＡ，螯合Ａｌ＾３＋和其它金属离子。然后以５－Ｂｒ－ＰＡＤＡＰ－乳化剂ＯＰ－Ｔｗｅｅｎ８０为混合批示剂，在ｐＨ５－６时用ＣｊＳＯ４标准溶液返滴过 ＣＤＴＡ     

CaO—SiO2—P2O5—H2O系统中CBC材料的溶胶—凝胶过程研究：I.溶胶的形…

以溶胶－凝胶方法制备ＣａＯ－ＳｉＯ２－Ｐ２Ｏ５－Ｈ２Ｏ系统中ＣＢＣ材料工艺流程为基础，利用ＸＲＤ，ＩＲ及固体核磁共振（＾２９Ｓｉ，＾３１Ｐ－ＮＭＲ）等测试方法研究了溶胶的形成及溶胶－凝胶转变过程中的物相变化及物相间发生的化学反应，结果表明，在多组分溶胶的形成过程，由Ｃａ（ＮＯ３）２．４Ｈ２Ｏ和Ｈ３ＰＯ４反应生成Ｃａ２Ｏ２Ｏ７和Ｃａ１０（ＰＯ４）６（ＯＨ）２（羟基磷灰石，简写为ＯＨＡｐ，下同），两者     

废水处理系统结垢现象的研究

通过对废水处理系统中与废水接触的设备和构筑物表面所形成的污垢的成份分析，确定出在酸性工业废水中和处理系统中污垢的主要成份为ＣａＳＯ４（可含两个结晶水）；其含量占７４．４￣９４．８％，在生化处理系统中污垢的主要成份是ＣａＣＯ３，含量占９５．７￣９６．３％，探讨了污垢的形成机理，阐述了废水中Ｃａ＾２＋，ＳＯ４＾２－１以及ＣＯ３＾２－离子的来源，提出了减轻结垢现象应采取的措施。     

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。