二元共混物的阻燃性

据据（Polym．Dopd．Stab．）1997，57，（2）187－189报道，印度学者对可混淆和不可混港的共混物性能进行比较，研究了聚氯乙烯／乙烯一酯酸乙烯共聚物（PVC／EVA），聚氯乙烯／苯乙类一丙烯睛共聚物（PVC／SAN）和EVA／SAN三种共混物阻燃和烟雾性。这些可混溶和不可混溶的共混物的性能比较，表明共混物的其它所有物理和机械性能都取决于可混溶性，但可混溶性对其阻燃和烟雾性只有很小影响。结论认为各种共混物的阻燃能力和发烟特性与它们是否容易混溶没有明确的关系。二元共混物的阻燃性     

无机材料对聚氯乙烯的抑烟研究

本文讨论了PVC（聚氯乙烯）的发烟机理及抑烟机理，讨论了锌、锑、铝三种无机化合物在单独使用及复合使用对对PVC发烟量的影响，指出了降低PVC燃烧炭烟量的途径。     

锡酸锌包覆碳酸钙阻燃剂在聚氯乙烯电缆料中的应用

通过氧指数(OI)、烟密度等级(SDR)、热性能和力学性能的测定,研究了锡酸锌包覆碳酸钙阻燃剂对聚氯乙烯(PVC)电缆料性能的影响。利用TG、DTG和DTA等分析方法,探讨了锡酸锌包覆碳酸钙对PVC的阻燃抑烟机理。结果表明:锡酸锌包覆碳酸钙的加入使PVC电缆料的SDR明显下降,而OI仅略有下降,对PVC电缆料的力学性能和热性能影响不大。     

含磷酸三甲苯酯、三氧化二锑和三氧化钼的高效、低烟复合阻燃体系在聚氯乙烯电缆料的应用

研究了聚氯乙烯电缆料配方中磷酸三甲苯酯，三氧化二锑和三氧化钼复合阻燃体系的阻燃性和消烟性能，结果表明，采用磷酸三甲苯酯，三氧化二锑和三氧化钼（TCP／Sb2O3/MoO3)三元复合体系比它们的单独使用或双组分并用有更优良的阻燃和抑烟效果，复合阻燃体系的固体用量仅用7份可获得高达32．5％的氧指数。     

聚合物与助剂文摘

成核剂对热致相分离法聚丙烯多孔膜结构及透过性能的影响;网球用粘合剂配方的优化设计;稀土热稳定剂的合成及在PVC中的应用研究进展;锡酸锌包覆碳酸钙阻燃剂在聚氯乙烯电缆料中的应用;无卤阻燃PE电缆料研究进展;烷基酚树脂橡胶改性剂……     

低烟低卤聚氯乙烯电缆料的研制

主要探讨了阻燃低烟低卤聚氯乙烯 (PVC)电缆料的配方设计 ,通过改变氢氧化铝 [Al(OH ) 3]、三氧化二锑 (Sb2 O3)、硼酸锌( 2ZnO·3B2 O3·5H2 O)等的用量 ,观察PVC电缆料的阻燃效果和发烟量的变化 ,并综合其力学性能和电性能的变化情况 ,最终确定阻燃剂的最佳组合及最佳配比     

低烟低卤PVC电缆料的配方设计

介绍阻燃低烟低卤聚氯乙烯(PVC)电缆料的研制,通过改变氢氧化铝(Al(OH)3)、三氧化二锑(Sb2O3)、硼酸锌(2ZnO·3B2O3·5H2O)等的用量,观察PVC电缆料的阻燃效果和发烟量的变化,并综合其力学性能和电性能的变化情况,最终确定阻燃剂的最佳组合及最佳配比。     

阻燃聚氯乙烯(PVC)电缆料的研制

介绍了阻燃聚氯乙烯(PVC)电缆料的研制过程和性能测试，结果表明：Sb2O3：TCEP：ZB质量比为1：5：5，加入原材料的阻燃协效性最好。LOI为35，起始热分解温度为250．55℃，断裂伸长率为182％，断裂压强为47．5MPa，完全符合PVC电缆料的使用要求。     

一种阻燃聚氯乙烯电缆料

本发明公开一种阻燃聚氯乙烯电缆料,由以下质量份的组分组成：聚氯乙烯树脂100份,增塑剂10～19份,碳酸钙15～25份,填充剂30～40份,膨胀型阻燃剂8～15份,钙锌稳定剂1～6份,三氧化二锑6～8份,氢氧化镁5～10份,氢氧化铝5～10份,抗氧剂10100.1～1.5份。本发明的阻燃剂为无机阻燃剂氢氧化镁、氢氧化铝和膨胀型阻燃剂季戊四醇。该阻燃聚氯乙烯电缆料具有优异的阻燃性能和绝缘性能,延长了电缆的使用寿命。     

偏苯三酸酐有开发价值

偏苯三酸酐（简称ＴＭＡ），是一种重要的精细化工产品，其主要用途是制造ＰＶＣ树脂的增塑剂和聚酰亚胶树脂漆，还可用于生产水溶性醇酸树脂、环氧树脂固化剂、低压及脉冲电力容器的浸渍剂，此外还可用于生产电影胶片、水处理剂、表面活性剂等。 用偏苯三酸酐为原料生产的ＰＶＣ增塑剂偏苯三酸三辛酯是一种电性能和热性能十分优良的增塑剂，其挥发性、耐老化性、耐抽出性及耐热性能佳，并有良好的绝缘性，可用于 １０５℃级耐热电缆料和 １０ ｋＶ聚氯乙烯电缆料的生产。我国用Ｆ级、Ｈ级电机绝缘材料的电机占的比例很小，而国外占到５０％…     

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.     

Many Drugs of Abuse May Be Acutely Transformed to Dopamine,Norepinephrine and Epinephrine In Vivo

It is well established that a wide range of drugs of abuse acutely boost the signaling of the sympathetic nervous system and the hypothalamic–pituitary–adrenal (HPA) axis, where norepinephrine and epinephrine are major output molecules. This stimulatory effect is accompanied by such symptoms as elevated heart rate and blood pressure, more rapid breathing, increased body temperature and sweating, and pupillary dilation, as well as the intoxicating or euphoric subjective properties of the drug. While many drugs of abuse are thought to achieve their intoxicating effects by modulating the monoaminergic neurotransmitter systems (i.e., serotonin, norepinephrine, dopamine) by binding to these receptors or otherwise affecting their synaptic signaling, this paper puts forth the hypothesis that many of these drugs are actually acutely converted to catecholamines (dopamine, norepinephrine, epinephrine) in vivo, in addition to transformation to their known metabolites. In this manner, a range of stimulants, opioids, and psychedelics (as well as alcohol) may partially achieve their intoxicating properties, as well as side effects, due to this putative transformation to catecholamines. If this hypothesis is correct, it would alter our understanding of the basic biosynthetic pathways for generating these important signaling molecules, while also modifying our view of the neural substrates underlying substance abuse and dependence, including psychological stress-induced relapse. Importantly, there is a direct way to test the overarching hypothesis: administer (either centrally or peripherally) stable isotope versions of these drugs to model organisms such as rodents (or even to humans) and then use liquid chromatography-mass spectrometry to determine if the labeled drug is converted to labeled catecholamines in brain, blood plasma, or urine samples.     

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。     

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.