活化胶粉在轮胎胎面胶中的应用

研究活化胶粉的主要性能及在胎面胶中的应用。试验结果表明：充填40目活化胶粉的硫化性能明显优于充填未活化胶粉。汽车轮胎胎面中加入少量40目活化胶粉，可提高胶料的抗屈挠龟裂、、生热耐磨性，提高轮胎的耐久性能。强伸性能有所下降，工艺性能好，还可以降低胶料成本。     

轻载斜交轮胎胎面胶配方的改进

通过调整轻型斜交轮胎胎面胶配方中炭黑补强体系以炭黑Ｎ３３０部分替代炭黑Ｎ２２０，应用活化胶粉（４０和６０目）和分散剂ＦＳ２００等新型原材料，并扩大胶粉用量（６０目），改善了胶料工艺性能，提高了成品性能，降低了成本。     

40目活化胶粉在载重轮胎胎侧胶中的应用

在载重轮胎胎侧胶中使用４０目活化胶粉,可提高胎侧胶的龟裂屈挠和抗裂口增长性能;生胶体系采用ＮＲ／ＳＢＲ／ＢＲ（并用比为７０／１０／２０）,硫化体系调整为硫黄１．６份,促进剂ＮＯＢＳ０．８５份,活化胶粉用量可加大到１５份。采用原生产工艺,工艺性能正常,成品外观质量有所改善,胎侧胶的成本下降了０．１８元．ｋｇ＾－１。     

改性氯磺化聚乙烯在轮胎胎侧胶中的应用

研究改性氯磺化聚乙烯在轮胎胎侧胶中的应用。结果表明,在胎侧胶中加入改性氯磺化聚乙烯,胶料的硫化特性和物理性能变化不大,耐老化和耐疲劳性能改善,成品轮胎胎侧胶老化后的物理性能以及胎侧胶与胎体帘布层间的粘合强度提高,使用寿命延长。     

粘合增进剂AIR-1在载重斜交轮胎帘布胶中的应用

研究了粘合增进剂AIR－1在载重斜交轮胎9．00－2016PR缓冲胶、胎体外层帘布胶和内层帘布胶中的应用效果。试验结果表明，加入5份粘合增进剂AIR－1，可明显提高胶料与帘线之间的H抽出力和粘合强度以及胶料的热老化性能，提高成品轮胎帘布层间的粘合强度的耐久性，并可降低胶料成本。     

80目胶粉在斜交胎胎冠中的应用

将深圳东部集团常温直接粉碎法生产的80目（非活化）胶粉与目前通常使用的40目活性胶粉进行对比，并在斜交胎胎冠胶中应用，试验结果表明：使用80目胶粉，可适当增加胶粉用量，其胶料综合物理性能相当，混炼及压出等工艺性能有所改善，并且能取得较好的经济效益和社会效益。     

60目活化胶粉在载重子午线轮胎中的应用

对６０目活化胶粉在载重子午线轮胎中的应用进行了研究。试验结果表明，胎面胶中加入１０份６０目活化胶粉，可以改善胶料的动态疲劳性能，提高轮胎的耐久性能，且工艺性能良好，还可以降低胶料成本。     

绢云母粉在轮胎胶料中的应用研究

对绢云母粉在轮胎胎侧胶和帘布胶中的应用进行小配合,大配合及成品性能检测。结果表明,绢云母粉活化后对胶料的老化性能,疲劳性能,半成品粘合强度,H抽出力等性能有所改善,但焦烧时间和正硫化时间缩短;用添加10份活性绢云母粉的胎侧胶和内层帘布胶制得的轮胎成品性能达到国家标准要求。     

钕系顺丁橡胶在9.00—20轮胎中的应用

介绍了在轮胎胎面胶料中并用５０份ＢＲ９１００（钕系顺丁橡胶）和在轮胎帘布层胶料中并用１０份ＢＲ９１００的应用研究工作。结果表明：轮胎胎面混炼胶填充系数由原１０６７提高到１１３１加工性能好,试制的９００－２０轮胎平均磨耗指数比并用５０份ＢＲ９０００（镍系顺丁橡胶）的对比胎提高１６９％     

活化胶粉在轮胎中的应用

在轮胎胎冠胶、胎侧胶及内层胶中掺用５—１０份活化胶粉，虽然胶料的强伸性能有所下降，但能改善废料的动态疲劳性能，提高耐久性能，工艺性能又好，井降低胶料成本，具有明显的经济效益和社会效益。     

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。