低合金钢-碱金属热虹吸管相容性的研究

对低合金钢１５ＣｒＭｏ、１２ＣｒＭｏＶ及不锈钢和碱金属制作的高温热虹吸管进行了２０００ｈ寿命试验。检验结果表明，热虹吸管冷却段的腐蚀比加热段严重，在低合金钢１５ＣｒＭｏ管内壁以均匀腐蚀为主，１２ＣｒＭｏＶ的管内表面存在有分散的缝隙形腐蚀坑，而不锈钢由于铬的选择性溶解，使晶界呈喇叭状粗大后，导致晶粒脱落。低合金钢热管使用２０００ｈ的腐蚀深度一般均在６０μｍ以下，该腐蚀对热管的寿命有较大的影响。分析认为，该腐蚀主要与热管内残余气体中的杂质氧有关，因此须完善热管制作中的抽真空和提纯工艺。     

焊接不锈钢合金衬里输液管道的腐蚀行为

本文介绍了用不同衬里工艺制造的高镍不锈钢合金衬里焊接管道的腐蚀试验和机械试验结果，评价了不锈钢合金衬里输液管道在酸性条件下的抗腐蚀性。确定了不锈钢合金衬里材料、衬里工艺和焊接工艺，对不锈钢合金衬里管道腐蚀行为的影响。     

三种不锈钢在700℃熔融LiCl中的腐蚀行为研究

采用浸没腐蚀试验方法研究了B2205、B409M及B439M三种不锈钢在700℃熔融LiCl中的腐蚀行为。发现三种不锈钢均遭受严重腐蚀,且腐蚀失重近似遵循线性规律。不锈钢的腐蚀速率随Cr含量的增加而减小。活化反应加速了不锈钢的腐蚀,不锈钢表面生成了含锂氧化物。     

尿素级不锈钢衬锆管的缝隙腐蚀试验研究

在不同的条件下,对尿素级不锈钢衬锆管进行休伊试验和选择性腐蚀试验,证实了不锈钢缝隙腐蚀的产生环境。     

反应器不锈钢搅拌桨的腐蚀与防护

针对反应器1Cr18Ni9Ti不锈钢搅拌浆在使用含氯物料生产中的腐蚀破坏现象，选用4种材料进行现场挂片试验。得出腐蚀是氯离子的点蚀造成的，指出对不锈钢作阳极氧化处理后耐蚀性增强，并建议使用含钼较高的1Cr18Ni9TiMo不锈钢作搅拌浆。     

厚壁圆筒形构件在甘油中溶液中的腐蚀疲劳

介绍了厚壁圆筒形构件腐蚀疲劳试验装置及对三种新型不锈钢的厚壁圆筒形成件在甘油水溶液中的腐蚀疲劳试验的结果，并将这些民由旋转弯曲疲劳试验得出的材料的腐蚀疲劳试验结果进行了比较。     

焊接不锈钢合金衬里输液管道的腐蚀行为

本文介绍了用不同衬里工艺制造的高镍不锈钢合金衬里焊接管道的腐蚀试验和机械试验结果,评价了不锈钢合金衬里输液管道在酸性条件下的抗腐蚀性。确定了不锈钢合金衬里材料、衬里工艺和焊接工艺,对不锈钢合金衬里管道腐蚀行为的影响。     

不锈钢在衣康酸介质中的腐蚀行为

利用浸泡腐蚀试验和电化学测试方法研究了３种不锈钢在衣康酸水溶液介质中的腐蚀行为，考察了介质浓度和温度对材料腐蚀的影响。结果表明，在一定范围内，随衣康酸浓度提高或温度升高，不锈钢腐蚀速率也相应增大。在相同条件下，材料的耐蚀性依钢种不同而稍有差别。在衣康酸介质中，不锈钢的阳极极化曲线表现出活化—钝化—过钝化—二次纯化—二次过钝化特征，介质浓度、温度以及材料类型等因素均对其有一定影响。     

耐高温浓硫酸泵用不锈钢的研究

设计了高温浓硫酸泵用不锈钢的化学成分，采用金相显微镜、Ｘ－射线衍射，扫描电子显微镜和多种腐蚀试验方法研究了试验钢的金相组织，腐蚀形貌和耐蚀性能，并试验了钢的力学性能，冶炼工艺，铸造性能与焊接性能。     

HR3C不锈钢晶间腐蚀敏感性检测

通过金相分析、10%草酸浸蚀试验和硫酸-硫酸铜腐蚀试验对HR3C不锈钢的晶间腐蚀敏感性进行了研究。实验结果表明,对HR3C不锈钢进行10%草酸浸蚀试验后其金相组织呈沟状;对其进行硫酸-硫酸铜腐蚀试验后发现,HR3C不锈钢发生晶间腐蚀敏感性低,属于耐晶间腐蚀的钢种。     

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。