无机粒子增强增韧阻燃聚丙烯的研究进展

介绍了无机粒子的表面改性方法和无机粒子增强增韧阻燃聚丙烯的机理与发展现状,详细阐述了氢氧化镁对聚丙烯的改性研究进展,并提出了无机粒子填充改性阻燃聚丙烯的发展趋势。     

聚丙烯增韧改性中结晶形态的变化

综述了聚丙烯（P）增韧改性与结晶形态变化的关系,不同的共混组分对PP结晶行为的影响不同,分别有细化分割、共结晶、原位成纤复合等作用。无机刚性粒子及有机／无机纳米粒子主要起到异相成核作用,诱发对增韧有贡献的β－晶的形成。讨论了不同β晶成核剂对PP结晶的影响。     

纳米无机粉体对PP／POE共混物力学性能和形态结构的影响

采用纳米无机粒子对茂金属聚乙烯（POE）弹性体增韧聚丙烯（PP）二元共混体系进行改性。从而制得PP／POE／无机纳米粒子三元复合材料。分别探讨了纳米高岭土和纳米碳酸钙对复合材料拉伸性能和冲击性能的影响，并考察了不同纳米粉体的增强效果。     

高性能无机填料在PP改性中的应用

讨论了无机填料微细化和表面活化以及无机粒子对聚丙烯增韧增强机理,介绍了无机填料对聚丙烯的改性效果与应用。     

建筑塑料的增韧改性研究进展

综述了聚氯乙烯、聚丙烯、聚苯乙烯等常用建筑塑料的增韧改性研究进展，讨论了橡胶和热塑性弹性体共混增韧、刚性无机粒子增韧以及共聚、交联等化学增韧的方法和特点。     

无机纳米粒子增韧聚丙烯及其机理研究

综述了无机纳米粒子增韧聚丙烯的最新研究进展，阐述了不同纳米粒子对聚丙烯增韧效果的影响，介绍了无机纳米粒子的物理化学作用增韧机理和微裂纹化增韧机理。并对增韧改性聚丙烯的发展前景进行展望。     

PP增韧技术的研究进展

从共聚改性、共混改性、添加成核剂等方面综述了近年来聚丙烯增韧的研究进展，介绍了增韧机理方面的最新研究成果。     

茂金属弹性体在聚丙烯薄膜中的应用

以茂金属弹性体为增韧树脂,对聚丙烯(PP)进行共混增韧改性,用下吹水冷方法生产PP薄膜。测试结果表明,改性后的PP薄膜,在保持其优良挺括性的同时,提高了在低温条件下的耐冲击和跌落性能。     

聚丙烯增韧改性的方法及机理

结合近年来的研究成果,对无规共聚改性、嵌段共聚改性、接枝共聚改性、改变立体结构、橡-塑共混改性、塑-塑共混改性、纤维填料改性、无机粒子改性、β晶型成核剂改性、纳米复合改性、多组分复合改性等多种聚丙烯的增韧方法及其机理进行了综述;指出橡-塑共混改性依然是目前最有效的增韧方法,多组分复合增韧是今后的发展方向。     

国内车用改性聚丙烯的研究现状及进展

主要综述了近年来国内在车用改性聚丙烯材料方面的研究进展,重点介绍了高抗冲共聚聚丙烯、无机纤维和粒子增强聚丙烯、弹性体增韧聚丙烯以及低VOC聚丙烯和阻燃聚丙烯材料的制备方法和性能。     

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.