2007世界碳纤维前景

简介了2007世界碳纤维前景会议情况,报导了会议的会前专题报告、会议报告以及"采用碳纤维工艺与生产"讨论会。指出碳纤维不同领域的应用,特别对航空工业的应用,像波音B787梦幻飞机和空中客车A380和A350XWB等。     

＇2008世界碳纤维前景会

简要介绍’2008世界碳纤维前景会议。会前有2个研讨主题，碳纤维生产和应用市场的分析和气溶胶（Aerogels）-气溶胶及其气溶胶复合材料的新应用和技术发展。会议有4个专题：工业综述和市场趋势，最终应用的市场分析，汽车上应用的前景和碳纤维生产和制造技术的发展。并指出’2008世界碳纤维会议对我国碳纤维工业发展的启示。     

'2008世界碳纤维前景会

简要介绍'2008世界碳纤维前景会议.会前有2个研讨主题,碳纤维生产和应用市场的分析和气溶胶(Aerogels)-气溶胶及其气溶胶复合材料的新应用和技术发展.会议有4个专题:工业综述和市场趋势,最终应用的市场分析,汽车上应用的前景和碳纤维生产和制造技术的发展.并指出'2008世界碳纤维会议对我国碳纤维工业发展的启示.     

碳纤维复合材料在民用航空上的应用

本文介绍碳纤维复合材料在民用航空上的应用，包括碳纤维复合材料在民用飞机上的应用、在B777和A380-800客机上复合材料采用情况以及国外对民用航空上应用复合材料的看法．     

碳纤维复合材料在飞机结构中的应用

回顾了40年来碳纤维复合材料在飞机结构中的应用发展过程,从成本角度分析了影响其在飞机结构中扩大应用的障碍和现状,指出以碳纤维复合材料在空客A380、A350和波音787飞机中的大范围应用为代表,碳纤维复合材料技术已克服了成本障碍,为今后在更多领域高性能结构的大范围应用提供了可能,进入了大规模工业应用的新纪元。根据飞机结构使用碳纤维复合材料的经验教训,针对国内碳纤维发展现状,指出为扩大国产碳纤维在飞机及其他高性能结构中的应用,碳纤维生产企业应努力的方向:首先是保证产品质量的稳定性和可靠性,制订符合国际规范的材料标准和验收方法;其二应注重对碳纤维下游产品,即复合材料及其结构研制与评定,碳纤维是否能用于飞机结构,其主要依据是碳纤维对复合材料结构制造的适用性和相应的性能指标;同时应注意对复合材料结构设计技术的普及和人才培养。最后根据飞机结构完整性的要求,提出了对第二代碳纤维力学性能指标的某些建议。     

碳纤维学术会议即将召开

根据1982年全国碳纤维工作会议商定的意见,由中国科学院化学部牵头召开全国碳纤维学术会议。 经研究决定,会议定于今年第三季度召开,由中国科学院山西煤炭化学研究所负责筹备工作。 会议拟就聚丙烯腈共聚、纺丝,原丝预氧化、碳化、原丝及碳纤维的结构研究和物性分析,沥青碳纤维的研究,碳纤维的应用等八个方面的问题将进行广泛的学术交流。 当前正在进行论文评审,会议召开的具体时间和地点,正在与有关方面联系。     

碳纤维联盟在北京召开工作组专题会议

<正>2014年11月28日,中国碳纤维及复合材料产业发展联盟召开专题会议,议定在航空航天、风电装备、电力传输、轨道交通、汽车、土木工程等领域建立碳纤维产业化应用的专项工作组。会议报告了碳纤维及其复合材料在该领域的应用现状、存在问题及下一步工作设想和建议,交流了如何加强碳纤维上下游产业链合作,解决碳纤     

世界碳纤维现状与进展

本文介绍世界碳纤维的现状与进展，包括世界碳纤维的生产能力。世界对碳纤维的需求，碳纤维在国防军工和其它工业上的应用，纳米碳纤维与应用和制备碳纤维的新技术等。     

进一步发展我国碳纤维的经验与启示——第一次全国碳纤维会("7511"会)35周年回顾与思考

简介了1975年在北京召开的第一次全国碳纤维会("7511"会)的概况,包括会议召开的背景,1975年我国碳纤维研究发展概况,"7511"会的目标与采取的措施。强调了"7511"会值得总结的经验。提出"7511"会对进一步发展我国碳纤维的启示。它们是:制订我国新的全国碳纤维发展规划和计划;安排一批新的碳纤维研究项目;强调碳纤维研发中的创新性;协同规划安排碳纤维的应用研究;加强碳纤维的基础研究。     

碳纤维机织物拉伸断裂强力测试方法及标准的探讨

拉伸断裂强力作为碳纤维机织物质量控制的一项重要指标，其测试方法尚无相应的国家标准。从标准内容及操作层面，结合现有的研究成果，对行业内使用的两个典型测试标准——GB/T7689.5—2013和GJB 2370A—2017附录A进行了比较，旨在分析和探讨测试方法的可行性。对比发现，GB/T 7689.5—2013的制样方法和预加张力对碳纤维机织物的适用性不强。GJB 2370A—2017的测试方法适用性和可操作性都非常好，但在碳纤维机织物行业内的普及性不高。因此，碳纤维机织物行业迫切需要制定统一的、通用的检测方法标准及产品接收标准。     

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。