乙丙橡胶的生产现状及发展方向

介绍了乙丙橡胶的生产现状以及乙丙橡胶的3种生产工艺方法,比较了3种生产工艺的优缺点;同时概述了我国乙丙橡胶的消费情况以及发展前景,并提出了乙丙橡胶的发展建议。     

国外乙丙橡胶产品大量涌入我国

我国汽车等行业迅猛发展带动了乙丙橡胶市场。我国乙丙橡胶年需求量为15万t，而国内乙丙橡胶年产能力仅2万t左右，且只有5～6个牌号的产品，主打产品是二元乙丙橡胶和4045牌号三元乙丙橡胶。巨大的供应缺口使国外乙丙橡胶产品纷纷涌人国内，牢牢占据了大部分市场份额。     

乙丙橡胶的生产技术及市场分析(一)

介绍了乙丙橡胶的生产工艺、催化剂、新产品以及新型第三单体的研究开发情况,分析了国内外乙丙橡胶的生产消费现状及发展前景,提出了我国乙丙橡胶行业的发展建议。     

乙丙橡胶市场分析

介绍了了国内外乙丙橡胶的产能情况，供需现状，市场销售及产品应用发展方向，详尽分析了国内乙丙橡胶生产情况，市场情况和进口产品国内市场占有率情况。     

乙丙橡胶的生产技术及国内外市场前景(上)

介绍了乙丙橡胶的生产方法，分析了国内外乙丙橡胶的生产消费现状及发展前景，提出了我国乙丙橡胶工业今后的发展建议。     

国内乙丙橡胶市场综述

简要介绍了乙丙橡胶的性能特点和应用特点，介绍了乙丙橡胶主要应用领域及在各个领域所应用的主要牌号，并时全球乙丙橡胶的产能与供需现状和国内乙丙橡胶区域分布情况及其发展趋势作了较详细的介绍。     

我国乙丙橡胶急需扩能

乙丙橡胶性能优良，应用范围广，继丁苯橡胶和顺丁橡胶之后，已发展为世界上第3大胶种。 近年来，我国乙丙橡胶市场保持高速增长，供需缺口持续增大。由于我国乙丙橡胶的生产能力还只有2万t/a，所以进口仍是缓解乙丙橡胶供需紧张局面的惟一方式。2005年，我国累计进口乙丙橡胶达到74975t（不包括初级形状的乙烯，丙烯聚合物），比2004年的71097t增加了3878t，增加了5．45％。     

国内外乙丙橡胶供需现状及预测

分析并预测乙丙橡胶的生产与消费情况。预计2020年世界乙丙橡胶总生产能力将超过200万t,消费量将达到180万t左右。截至2013年底,我国乙丙橡胶生产能力为4.5万t。2020年我国乙丙橡胶生产能力将达到64.5万t,消费量将达到47万t左右,汽车工业仍是我国乙丙橡胶主要消费领域。     

乙丙橡胶的性能和应用需求

乙丙橡胶（EPR）是世界第三大合成橡胶品种。发展速度快，市场潜力巨大。我国是目前世界上乙丙橡胶需求增长最快的国家之一。笔者研究了乙丙橡胶的国内外供需状况，对产品性能和应用的需求进行了重点论述，并对我国今后乙丙橡胶生产的方向提出了合理的建议。     

乙丙橡胶的生产技术及国内外市场前景(下)

介绍了乙丙橡胶的生产方法，分析了国内外乙丙橡胶的生产消费现状及发展前景。提出了我国乙丙橡胶工业今后的发展建议。     

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。