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     

自蔓延高温合成Ni0.35Zn0.65Fe2O4粉体的研究

在自蔓延高温合成（ＳＨＳ）Ｎｉ０．３５Ｚｎ０．６５Ｆｅ２Ｏ４铁氧体粉体的实验中,研究了铁粉含量、氧压力、原料粉体粒度和相对密度对燃烧温度、燃烧波速度的影响,以ＸＲＤ,ＴＥＭ,振动样品磁强计分别对产物的微观结构、磁性能进行了研究,制备了粒度分布均匀、磁性能优良的Ｎｉ０．３５Ｚｎ０．６５Ｆｅ２Ｏ４磁粉。     

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。     

PZN－PFN－PFW系陶瓷的介电性质和钙钛矿相的稳定作用

研究了Ｐｈ（Ｚｎ１／３Ｎｂ２／３）ｘ（Ｆｅ１／２Ｎｂ１／２）０．６４－ｘ（Ｆｅ２／３Ｗ１／３）０．３６Ｏ３（ＰＺＮ－ＰＦＮ－ＰＦＷ）系陶瓷中ＰＺＮ含量与焦录石相形成间的关系，以及少量添加剂对钙钛矿相的稳定和介电性能的影响。在该系中仅添加０．１５ｗｔ％ＭｎＣＯ３就可制备１００％钙钛矿型结构的陶瓷。文中报导了该系组成的相关系和介电性质。钙钛矿结构的陶瓷介电常数高，电容温度系数较低。     

MnSO4生产中除铁杂质方法探讨

通过由氢醌含锰废渣制ＭｎＳＯ＿４工艺，介绍了反中和沉淀法除铁的工艺条件。以的ＭｎＯ＿２作氧化剂，ＮＨ＿３·Ｈ＿２Ｏ作中和剂，控制一定的ｐＨ值和Ｆｅ￣（３＋）浓度，过程中温度为８０～９０℃，反应时间为０．５ｈ，采用反沉淀法可使矿石中的铁变为针状铁。该方法分离效果好，既除去了铁杂质，又得到了针状铁。     

固体酸催化合成无毒增塑剂柠檬酸三正丁酯

研究了柠檬酸（２－羟基丙烷三羧酸）与丁醇在固体酸催化作用下合成柠檬酸三正丁酯（２－羟 基丙烷三羧酸三正丁酯）的工艺条件，找到了一种工艺简单、反应时间短、酯化率高的合成方法。 实验结果表明：４种固体酸催化剂对反应的催化活性大小依次为ＨＰＷ（磷钨酸）＞ＦｅＣｌ_３·６Ｈ_２Ｏ＞ ＮＨ_４Ｆｅ（ＳＯ_４）_２ １２Ｈ_２Ｏ＞ＳＯ_４~（２－）／ＺｒＯ_２；ＨＰＷ催化合成柠檬酸三正丁酯的的最佳反应条件为：醇酸摩 尔比５０：１，ＨＰＷ用量３％（以酸质量为基准），反应温度１１０～１６０℃，反应时间４～５ｈ，转化率达 ９８％以上，产品纯度＞９９％。     

合成Co2O3—Cr2O3—F32O3—MnO2系高温黑颜料最佳工艺条件的探讨

本文介绍了Ｃｏ２Ｏ３－Ｃｒ２Ｏ３－Ｆｅ２Ｏ３－ＭｎＯ２系高温黑颜料的合成工艺，研究分析了四种氧化物的不同配比、混合及合成温度等工艺过程对颜料呈色的影响，从而确定了含钴量较低呈色纯正的Ｃｏ－Ｃｒ－Ｆｅ－Ｍｎ系高温颜料的最佳工艺条件，并利用过渡金属络合物吸收光谱理论对Ｃｏ、Ｃｒ、Ｆｅ、Ｍｎ四种元素的变价离子使含Ｂdisplay status     

载铁炭分子筛中铁的存在形态

用Ｍ　ｓｓｂａｕｅｒ谱法测定了载铁炭分子筛中铁的存在形态。结果表明，经焙烧和还原后，担载在炭分子筛上的Ｆｅ（ＮＯ_３）_３有７５％～７７％转变为Ｆｅ_２Ｏ_３，ＦｅＯ，Ｆｅ（ＮＯ_３）_２和Ｆｅ_３Ｏ_４，其中有益于提高炭分子筛空分选择性的磁性Ｆｅ_３Ｏ_４的含量约２９％．     

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     

专利实例

专利实例磷化四则９６３０１磷化膜本专利介绍在钢、锌或其合金上生成含Ｎｉ和Ｍｎ的磷化锌膜工艺。该磷化工艺不含氯酸盐和亚硝酸盐，它特别适合于浸涂。该磷化液含有：Ｚｎ离子０．８～１．０ｇ／Ｌ，Ｍｎ离子０．８～１．０ｇ／Ｌ，Ｆｅ（Ⅱ）离子０．２～０．４ｇ／Ｌ...     

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。