美国1993年合纤产量

美国１９９３年合纤产量ＰＥＴ短纤维１０３．９万ｔ（－０．２％），民用长丝为４０．８万ｔ（＋０．１％），工业用丝１７．４万ｔ（＋０．４％）；ＰＡ短纤维４３．０万ｔ（＋２．９％），ＢＣＦ丝４９．６万ｔ（＋７．０％），民用丝１６．７万ｔ（－０．７％），工业...     

微米级硫钨酸铵在氢气中的热分解动力学

用ＤＴＡ法和ＸＲＤ法研究了粒度为６３～７４μｍ的硫钨酸铵在氢气中的热分解机理，用Ｋｉｓｓｉｎｇｅｒ法、Ｆｒｅｅｍａｎ－Ｃａｒｏｌ法和Ｃｏａｓｔ－Ｒｅｄｆｅｒｎ法测得硫钨酸铵热分解反应三个阶段的活化能分别为（５３±０．５），（１２７±０．５），（３００±０．８）ｋＪ／ｍｏｌ，反应级数分别为０．８，０．６，１．５．硫钨酸铵在氢气中的热分解分四步进行，即（ＮＨ４）２ＷＳ４·Ｈ２Ｏｓ→（ＮＨ４）２ＷＯ４（ｓ）＋Ｈ２Ｏ（ｇ）→ＷＳ２（ｓ）＋２ＮＨ３（ｇ）＋Ｈ２（ｇ）＋２Ｓ（１）＋Ｈ２Ｏ（ｇ）→ＷＳ２（ｓ）＋２ＮＨ３（ｇ）＋２Ｈ２Ｓ（ｇ）＋Ｈ２Ｏ（ｇ）→ＷＳ２（ｓ）＋Ｗ（ｓ）＋２ＮＨ３（ｇ）＋２Ｈ２Ｓ（ｇ）＋Ｈ２     

天然高分子吸附剂研究

研究了羧甲基化的交联壳聚糖树脂（ＡＣ－ＣＴＳ）对Ｚｎ（Ⅱ）Ｐｂ（Ⅱ）离子的吸附性能。结果表明，该树脂对Ｐｂ２＋比对Ｚｎ２＋具有更强的吸附选择性，其对Ｐｂ２＋和Ｚｎ２＋的吸附容量分别为６６０．９７和１７２．００ｍｇ·ｇ－１；其ＫＰｂ２＋／Ｚｎ２＋＝３．８４；其吸附的最佳ｐＨ值分别为５．４和４．０；在低浓度时，ＡＣ－ＣＴＳ对两种离子的吸附率均可达１００％。     

HPLC法测定4,4‘—二溴二苯基乙二酮

建立了４，４’二溴二苯基乙二酮的高效液相色谱分析方法。流动相：１，４－二氧六环十正已烷（Ｖ＋Ｖ）＝０．５＋９９．５，在硅胶柱上，ＵＶ－２７５ｎｍ下用外标法进行测定，方法精密度为０．１７，是系数为０．２０％，回收率在９８．５％￣１００．５％之间。     

上海化工市场7月上旬部分商品进口成本与市场价格对比表

说明： （１）表内国际市场美元价及国内市场价均为７月上旬价。 （２）美元折合人民币按８．２９元计。 （３）进口成本包括：货价、保险费（按０．３２１％计）、关税、进口代理商手续费（按０．５％～１．５％计），银行结汇开证手续费（按０．３％计），但未包括到港后的费用。 （４）不含增值税进口成本价＝进口货价ｘ外币汇率ｘ（１＋保险费率）ｘ（１＋进口关税率＋进口代理商手续费＋银行结汇开证手续费） （５）不含税市场价＝含税市场价÷１．１７ （６）因增值税的纳税人不负税，故按不含税进口成本和不含税市价进行对比，以使差…     

高效液相色谱法测定辛硫磷和吡虫啉的复配制剂

本文采用ＯＤＳ Ｃ１８色谱柱,甲醇＋水（７０＋３０）为流动相,用二极管矩阵检测器（２５４ｎｍ）,同时测定了２５％蚜虱绝乳油中的有效成分辛硫磷和吡虫啉的含量。该法简便、快速、准确,标准偏差分别为０．１５和０．２１,变异系数分别为０．６１％和０．７３％。     

高效液相色谱法测定辛硫磷和吡虫啉的复配制剂

采用ＯＤＳ Ｃ１８色谱柱,甲醇＋水（７０＋３０）为流动相、用二极管矩阵检测器（２５４ｎｍ）,同时测定了２５％蚜虱绝乳油中的有效成分辛硫磷和吡虫啉的含量。该法简便、快速、准确,标准偏差分别为０．１５和０．２１,变异系数分别为０．６１％和０．７３％。     

乙酰甲胺磷原药高效液相色谱分析

用反相高效液相色谱法，采用ｓｐｈｅｒｉｓｏｒｂＣ１８色谱柱，以水＋乙腈（９６＋４）作为流动相，在２１０ｎｍ下检测乙酰甲胺磷原药有效成分含量，本方法的变异系数为０．５７％，回收率为９８．８～１００．４％。     

缔合法磷酸二铵氨化反应特征的研究

研究了氨和磷酸缔合物生成磷酸一铵的化学反应特征。其反应式为：（Ｒ３ＮＨ）Ｈ２ＰＯ４＋ＮＨ３→Ｒ３Ｎ＋（ＮＨ４）Ｈ２ＰＯ４获得了两个温度范围的反应速率方程：２０～５０℃：－γＡ＝８．６７８×１０３·ｅｘｐ（－１．９５６４×１０３·１／Ｔ·Ｃ０．３Ａ５０～８０℃：－γＡ＝０．４２０３×１０２·ｅｘｐ（－０．９７８０×１０３·１／Ｔ·Ｃ０．３Ａ方程计算与实测在相同与不同温度时的平均误差分别为－４．２９％和－０．３２％。研究结论：反应级数ｎ＝０．３;反应为受液膜控制的快速反应;生成磷酸二铵的反应有一慢速区,反应分为两段进行较为经济。     

（Ba0.5Pb0.5）O.La2O3.4TiO2—（Zr0.8Sn0.2）TiO4复合系统的微波介 …

研究了（Ｂａ０．５Ｐｂ０．５）Ｏ．Ｌａ２Ｏ３．４ＴｉＯ２－（Ｚｒ０．８Ｓｎ０．２）ＴｉＯ４复合系统的微波介电性能,烧结性能和微观结构,发现复合系统由（ＢａＰｂ）６－ｘＬａ８＋２ｘＴｉ１８Ｏ４．Ｌａ４Ｔｉ９Ｏ２４和（Ｚｒ０．８Ｓｎ０．２）ＴｉＯ４３相组成,而（Ｂａ０．５Ｐｂ０．５）Ｏ．Ｌａ２Ｏ３．４ＴｉＯ２除了（ＢａＰｂ）６－ｘＬａ８＋２ｘ３Ｔｉ１８Ｏ５４和常数,频率温度系数,Ｑ因子主要与其中的相组     

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.