铁酸镍钠米晶体材料的制备

以ＦｅＳＯ４·７Ｈ２Ｏ和ＮｉＳＯ４·７Ｈ２Ｏ为原料,首先制备出晶粒细小的碱式碳酸盐前驱体,在３００￣７００℃焙烧１ｈ后,制备出ＮｉＦｅ２Ｏ４纳米晶体材料。经ＸＲＤ和ＴＥＭ检测,粒径为３￣１８ｎｍ,粒度均匀。     

铁酸钴纳米晶体的制备及机理

以ＦｅＳＯ４·７Ｈ２Ｏ和ＣＯＳＯ４·７Ｈ２Ｏ为原料,首先制备出晶粒细小的盐渍化碱式碳酸盐前驱体．在５００℃焙烧１ｈ后,制备出ＣｏＦｅ２Ｏ４纳米晶体材料,经ＸＲＤ和ＴＥＭ检测,粒径为４０ｎｍ,粒度均匀．     

铁酸盐纳米材料的制备

以硫酸盐为原料,按ｎ（Ｆｅ２ ＋ ）∶ｎ（ＮａＯＨ）∶ｎ（ＮａＨＣＯ３） ＝１∶１ ．８∶２．０ 添加ＮａＯＨ 和ＮａＨＣＯ３ ,制备出晶粒细小的碱式碳酸盐前驱体,干燥后在５００℃通气焙烧１ｈ,分别制备出ＺｎＦｅ２ Ｏ４ 、ＮｉＦｅ２ Ｏ４和ＣｏＦｅ２ Ｏ４ 纳米材料,经ＸＲＤ和ＴＥＭ检测,粒径为４０～５０ｎｍ ,粒度均匀     

均匀纺锤形α—FeOOH粒子的合成

本文以ＦｅＳＯ４、７Ｈ２Ｏ和Ｎａ２ＣＯ３为原料，制备晶形、粒度、轴比等满足高性能磁粉要求的均匀纺锤形α－ＦｅＯＯＨ粒子，研究考察了碱比、〔Ｆｅ＾２＋〕起始浓度、温度、搅拌转速、气量等工艺参数对合成均匀纺锤形α－ＦｅＯＨ粒子的影响规律，并制备出长轴为０．２￣０．３μｍ、轴比为４：１的、大小均匀、分散性好、无枝叉的纺锤形α－ＦｅＯＯＨ粒子。     

磷酸铁的合成及性能研究

讨论了以Ｆｅ２Ｏ３、Ｈ３ＰＯ４合成ＦｅＨ２Ｐ３Ｏ１０·２Ｈ２Ｏ;以ＦｅＳＯ４、Ｈ３ＰＯ４、ＮａＣｌＯ３、ＮａＯＨ合成ＦｅＰＯ４·２Ｈ２Ｏ。ＦｅＨ２Ｐ３Ｏ１０·２Ｈ２Ｏ及ＦｅＰＯ４·２Ｈ２Ｏ是很好的无毒防锈颜料。     

镍铁合金镀液故障处理

镍铁合金镀液故障处理郭绍湘（山东红旗机械厂，２６１０３１）１简介双层镍铁合金／装饰铬生产线，Ｎｉ－Ｆｅ槽液成份及工艺规范如下：ＮｉＳＯ４·７Ｈ２Ｏ３００～３５０ｇ／Ｌ，Ｈ３ＢＯ３４０～４５ｇ／Ｌ，ＮａＣｌ１５～１８ｇ／Ｌ，Ｆｅ总１～２．５ｇ／Ｌ，Ｎａ...     

废雷尼镍催化剂的综合利用

以废雷尼镍催化剂为原料,制备出合格的硫酸镍、硝酸镍和氧化镍。利用化学分析方法测定这种废催化剂含Ｎｉ２＋为６６．０６％,Ｆｅ２＋为０．７７９％,Ｃｒ３＋为１．４５６％,选用ＮａＣｌＯ作氧化剂将Ｆｅ２＋氧化成Ｆｅ３＋,再调节溶液的ｐＨ值为５．０～５．６,将Ｆｅ３＋和Ｃｒ３＋以氢氧化物的沉淀形式过滤除去。滤液加入浓硫酸,调节ｐＨ值处于３．５～４．０之间,然后冷却、结晶,离心即得ＮｉＳＯ４·７Ｈ２Ｏ;滤液加入碳酸钠,经一系列操作,制得碳酸镍粉末,再将碳酸镍粉末缓慢加热至４５０℃以上,则制得氧化镍;将碳酸镍粉末加入硝酸溶解,再浓缩、结晶、分离制得硝酸镍［Ｎｉ（ＮＯ３）２·６Ｈ２Ｏ］成品,本法工艺简单,成本低廉,镍的回收率达９５％     

聚烯烃表面氧化处理的研究

研究了以高锰酸钾或重铬酸钾／水／浓硫酸＝５∶８∶１００（质量比）或２０％（质量分数）的过硫酸铵水溶液及氯化铁或硫酸铜作为催化剂对聚烯烃进行的表面氧化处理,并通过熔点和红外光谱及光电子能谱等方法对氧化反应和产品的结构进行了表征。研究表明,最佳氧化温度和时间分别为４５℃～６０℃与４５ｍｉｎ;用ＫＭｎＯ４／Ｈ２ＳＯ４／ＦｅＣｌ３／ＣｕＳＯ４,Ｋ２Ｃｒ２Ｏ７／Ｈ２ＳＯ４／ＦｅＣｌ３,Ｋ２Ｃｒ２Ｏ７／Ｈ２ＳＯ４／ＣｕＳＯ４体系对聚乙烯的氧化中,氧化深度依次减小,Ｃ原子的摩尔分数由未氧化时的８０．８０４％,分别降低为３１．９０７％、６９．９０５％和７８．６６９％;在ＦｅＣｌ３催化下,产品中Ｃｌ的含量普遍增加,而以ＫＭｎＯ４／Ｈ２ＳＯ４／ＦｅＣｌ３／ＣｕＳＯ４氧化时增加最多,但对Ｋ２Ｃｒ２Ｏ７／Ｈ２ＳＯ４／ＦｅＣｌ３氧化体系,Ｏ含量的增加相对较多     

乙酸异丁酯合成中无机盐催化作用初探

研究了ＣｕＳＯ４．５Ｈ２Ｏ２、ＣｕＳＯ４、ＦｅＳＯ４、７Ｈ２Ｏ、ＦｅＣｌ３、６Ｈ２Ｏ、ＣｕＣｌ２．２Ｈ２Ｏ等５种盐对异丁醇与乙酸酯化反应的催化性能，结果表明ＦｅＣｌ３．６Ｈ２Ｏ和ＣｕＣｌ２．２Ｈ２Ｏ是较好的催化剂，酯转化率达８６－９３％。     

高铁酸钾的合成

以ＦｅＳＯ４为原料,采用高效催化剂,在实验室条件下,用空气作为氧化剂,制备出Ｆｅ（ＯＨ）３然后用次氯酸盐法生产Ｋ２ＦｅＯ４。实验研究了Ｋ２ＦｅＯ４生产的操作条件和生产工艺。     

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。