膨润土有机改性提高分散性的研究进展

介绍了国内对膨润土进行有机改性提高分散性的主要研究进展,包括季铵盐改性膨润土、氯铵盐改性膨润土、溴铵盐改性膨润土、酰胺改性膨润土、吡啶改性膨润土、硅烷改性膨润土、十二烷基磺酸钠改性膨润土等,对这些方法做了比较及评价,并对今后的研究方向提出建议。     

不同改性膨润土处理染料废水的实验探索

钙基膨润土经不同改性,用于处理染料废水,比较了改性后的膨润土处理染料废水的效果;处理效果依次是:柱撑酸膨润土>柱撑膨润土>酸化膨润土>酸化柱撑膨润土>钠化膨润土>钙基膨润土。简单探讨了其原因。     

膨润土有机改性提高分散性的研究进展

介绍了国内对膨润土进行有机改性提高分散性的主要研究进展,包括季铵盐改性膨润土、氯铵盐改性膨润土、溴铵盐改性膨润土、酰胺改性膨润土、吡啶改性膨润土、硅烷改性膨润土、十二烷基磺酸钠改性膨润土等,对这些方法做了比较及评价,并对今后的研究方向提出建议。     

膨润土系列产品开发

浙江省磐安天开膨润土矿业有限公司是一家集膨润土 (高岭土 )原矿开采、加工、生产于一体的高科技公司。浙江省磐安天开膨润土矿业有限公司和中国科学院兰州化学物理研究所携手开发膨润土系列产品。主要产品有铸造用膨润土、钻井用膨润土、橡塑填料用膨润土、精制膨润土、高白膨润土、煅烧高岭土、系列有机高岭土、白碳黑、膨润土 /丁基橡胶复合材料、膨润土密封剂、隧道密封剂等。该公司常年与国内外一些知名院校及有关科研机构保持密切的合作 ,对高新产品具有强大的开发和科研能力。目前正在研制开发纳米膨润土、医药用膨润土、酒类用膨润…     

不同改性膨润土处理染料废水的实验探索

对产自辽宁某地的钙基膨润土经不同的改性,用之处理染料废水,比较了不同改性后的膨润土处理染料废水的效果;处理效果依次是柱撑酸化膨润土〉柱撑膨润土〉酸化膨润土〉酸化柱撑膨润土〉钠化膨润土〉钙基膨润土。并简单探讨了其不同的原因。     

关于膨润土使用问题的答疑

请问韩工：某厂位于江西,主要生产聚晶微粉,为了降低生产成本、满足低温快烧工艺和提高坯体白度,引入了部分信阳膨润土,您能告诉我们如何选择膨润土,如何使用膨润土,引入膨润土的陶瓷配方在生产过程中有什么问题需要注意吗？答：膨润土的选择要满足舒适度的要求,所谓舒适度就是找到平衡点。首先要了解膨润土的属型、类别和纯度,膨润土的属型分类依据可交换性阳离子占交换容量（CEC）的比例来划分,如单一可交换性阳离子占交换容量（CEC）的比例≥50%时,可命名为钠基膨润土、钙基膨润土、镁基膨润土和铝氢基膨润土等,两种最大比例的可交换阳离子则可以命名为钠钙基膨润土、钙钠基膨润土或钙镁基膨润土等,不过有些价格昂贵的元素交换后,尽管不占主要成分也可以单独命名,譬如锂基膨润土、银基膨润土、铜基膨润土等。     

膨润土改性及其应用研究

为了改善膨润土的性能,扩大其使用范围,综述了膨润土的结构和针对这种独特的片层结构进行的改性原理及方法,以及制备得到钠化改性膨润土、活化膨润土、有机改性膨润土和纳米复合膨润土等不同类型的改性膨润土,并分析了膨润土改性后在环境保护、载体等领域的应用与前景。改性膨润土大大提高了膨润土的性能与品质,改变了中国膨润土资源品质低、应用受到限制的局面,有助于充分利用好中国丰富的膨润土资源,提高其附加价值,创造更大的经济效益。     

膨润土在废水处理中的应用进展

介绍了膨润土及改性膨润土的基本组成和基本性质,阐述了膨润土的改性方法,论述了膨润土及改性膨润土在废水处理中的应用及展望.     

钠基膨润土对空气中甲醛净化效果的研究

以钠基膨润土为基本原料,通过酸活化和焙烧活化两种改性方法,制备了酸化膨润土和焙烧膨润土,并研究了膨润土原材料及改性膨润土净化材料对空气中甲醛的净化效果.结果表明,酸化膨润土和焙烧膨润土比原钠基膨润土对空气中甲醛的净化效果有较大幅度的提高,净化率分别为77%,80%和69%.因此,膨润土是一种新型理想的空气净化材料.     

膨润土的综合开发利用

膨润土是一种以蒙脱石为主的粘土天然膨润土一般多为钙基膨润土，其物化性质不甚理想，如将其加工成钠基膨润土、提纯膨润土、颗粒膨润土、有机膨润土、活性白土(颗粒白土)、白炭黑等膨润土深加工产品，可广泛用于石油化工、油脂、医药、建筑、日化、纺织、涂料、冶金、环保等各领域中。     

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.     

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.     

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。     

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.     

Inorganic/organic nanocomposite coatings: The next step in coating performance

Inorganic/organic hybrid materials have considerable promise and are beginning to become a major area of research for many coating usages, including abrasion and corrosion resistance. Our primary approach is to prepare the inorganic phase in situ within the film formation process of the organic phase. The inorganic phase is introduced via sol-gel chemistry into a thermosetting organic phase. By this method, the size, periodicity, spatial positioning, and density of the inorganic phase can be controlled. An important aspect of the inorganic/organic hybrid materials is the coupling agent. The initial task of the coupling agent is to provide uniform mixing of the oligomeric organic phase with the sol-gel precursors, which are otherwise immiscible. UV-curable inorganic/organic hybrid systems have the advantages of a rapid cure and the ability to be used on heat sensitive substrates such as molded plastics. Also, it is possible to have better control of the growth of the inorganic phase using UV curing. It is our ultimate goal to completely separate the curing of inorganic and organic phases to gain complete control over the morphology, and hence optimization of “all” the coating properties. Thus far, it has been found that concomitant UV curing of the inorganic and organic phases using titanium sol-gel precursors afforded nanocomposite coatings which completely block the substrate from UV light while maintaining a transparent to visible light. Also, it has been found that the morphology of the inorganic phase is highly dependent on the concentration and reactivity of the coupling agent. Presented at the 82nd Annual Meeting of the Federation of Societies for Coatings Technology, October 27–29, 2004, in Chicago, IL.     

Ethanol and (−)-α-Pinene: Attractant Kairomones for Some Large Wood-Boring Beetles in Southeastern USA

Ethanol and α-pinene were tested as attractants for large wood-boring pine beetles in Alabama, Florida, Georgia, North Carolina, and South Carolina in 2002–2004. Multiple-funnel traps baited with (−)-α-pinene (released at about 2 g/d at 25–28°C) were attractive to the following Cerambycidae: Acanthocinus nodosus, A. obsoletus, Arhopalus rusticus nubilus, Asemum striatum, Monochamus titillator, Prionus pocularis, Xylotrechus integer, and X. sagittatus sagittatus. Buprestis lineata (Buprestidae), Alaus myops (Elateridae), and Hylobius pales and Pachylobius picivorus (Curculionidae) were also attracted to traps baited with (−)-α-pinene. In many locations, ethanol synergized attraction of the cerambycids Acanthocinus nodosus, A. obsoletus, Arhopalus r. nubilus, Monochamus titillator, and Xylotrechus s. sagittatus (but not Asemum striatum, Prionus pocularis, or Xylotrechus integer) to traps baited with (−)-α-pinene. Similarly, attraction of Alaus myops, Hylobius pales, and Pachylobius picivorus (but not Buprestis lineata) to traps baited with (−)-α-pinene was synergized by ethanol. These results provide support for the use of traps baited with ethanol and (−)-α-pinene to detect and monitor common large wood-boring beetles from the southeastern region of the USA at ports-of-entry in other countries, as well as forested areas in the USA.