粘接过程中配位键力的研究

以聚乙烯和马来酸酐的接枝物作为胶粘剂对金属进行粘接,利用ＸＰＳ（Ｘ射线光电子能谱）对其粘接界面元素的化学状态进行研究。结果证明在粘接界面上有配位键生成。     

交联聚乙烯（PEX）与铝塑复合（PEX—Al—PEX）管＼材PE凝胶含量测试方法统？…

针对国内外有关交联聚乙烯（ＰＥＸ）与铝塑复合（ＰＥＸ－Ａｌ－ＰＥＸ）管材ＰＥ凝胶含量的测试标准中在试验参数等方面各自不同的规定，进行了试验验证、对比与讨论，并提出了统一ＰＥ凝胶含量测试方法的试验条件。     

HDPE 2100 J结构-性能-加工关系的研究

利用红外光谱、差示扫描量热法、流变表征、Ｘ射线衍射等方法对北京燕山石油化工有限公司生产的高密度聚乙烯２１００Ｊ、２２００Ｊ以及进口２１００Ｊ的结晶行为、流变行为、力学性能等进行了对比分析，并对北京燕山石油化工有限公司生产的２１００Ｊ的加工－结构－性能关系进行了研究，以期对２１００Ｊ的推广应用有所帮助。     

交联聚乙烯管材的生产与应用

本文介绍了交联聚乙烯（ＸＬＰＥ）及其和材的生产工艺与特点，着重探讨了一步法硅烷交联聚乙烯（ＸＬＰＥ）管材制备工艺与二步法制备工艺的差异，评述了一步法硅烷交联聚乙烯管材的主要应用领域及该产品极大的市场潜力和发展前景。     

XRF法在聚乙烯微量金属分析中的应用

探讨了用Ｘ射线荧光光谱分析法（ＸＲＦ法）测定聚乙烯中所含的微量金属Ｆｅ、Ｔｉ、Ａｌ的方法，简 分析条件及实验方法。     

HDPE／PC共混体系的增容剂分子设计与合成

介绍了高密度聚乙烯（ＨＤＰＥ）／聚碳酸酯（ＰＣ）共混体系的增容剂的分子设计与合成技术。采用了低密度聚乙烯（ＬＤＰＥ）在引发剂过氧化苯甲酰（ＢＰＯ）存在下与二烯丙烯双酚Ａ（ＤＡＢＰＡ）在二甲苯中进行溶液接枝共聚反应的工艺。通过重量法和Ｘ－射线光电子能谱（ＸＰＳ）证实了接枝共聚物（ＬＤＰＥ－ｇ－ＤＡＢＰＡ）的存在。研究了引发剂ＢＰＯ用量、单体ＤＡＢＰＡ用量、反应时间及反应温度对接枝率的影响,确定了合成     

硅烷交联聚乙烯电缆绝缘料的研制

本文介绍了硅烷交联聚乙烯（ＸＬＰＥ）生产技术、材料选择及用量对电缆料性能的影响，探讨了温度等对凝胶率的影响，用两步法工艺研制了硅烷接枝温水交联聚乙烯电缆绝缘料。     

在单方向往复低剪切应力场中生成双向自增强HDPE试样的研究(Ⅱ) 试样聚集态结构分析

运用ＳＥＭ、ＤＳＣ、ＷＡＸＤ等手段对双向自增强ＨＤＰＥ的聚集态结构进行了初步的分析。结果表明：双向自增强ＨＤＰＥ试样主要由片晶构成，片晶取向、片晶厚度增加、试样结晶度提高和结晶更为完善共同导致了试样双向拉伸强度的提高。     

在单方向往复低剪切应力场中生成双向自增强HDPE试样的研究（Ⅱ）试？…

运用ＳＥＭ、ＤＣＣ、ＷＡＸＤ地双向自增强ＨＤＰＥ的聚集态结构进行了初步的分析。结果表明：双向自增强ＨＤＰＥ试样主要由片晶构成，片晶取向、片晶取向、片晶厚度增加、试样结昌度提高和结晶更为完善共同导致了试样双向拉伸强度的提高。     

可交联聚乙烯粒料中水分含量的测定

本文在不使可交联聚乙烯（简称ＸＬＰＥ）粒料交联的温度下，加热使之熔融、汽化样品中的水分，用电量法测定水分含量。探讨了汽化温度、恒温时间与水分检出量之间的关系，并提出适当的分析测试条件。     

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。