水性集装箱涂料现状与展望

根据水性集装箱涂料产品的配套体系,讨论了各涂层的配方设计、需要满足的相关标准要求;介绍了水性集装箱涂料大规模推广一年来取得的相关经验;同时总结分享了现场涂装工艺,对目前集装箱涂料水性化遇到的主要问题、难点进行了分析讨论,为工业漆水性化提供参考。     

新型环境友好型集装箱涂料的研制

介绍一种新型水性集装箱涂料。该涂料是依据集装箱用涂料的技术标准及涂装工艺,研发出的一种水性环氧涂料与水性丙烯酸聚氨酯涂料配套的新型涂料,它们有着非常优秀的施工性和配套性。并探究了成膜物、防腐填料、消泡剂、增稠剂及复合涂层对涂膜理化性能影响。寻找既能适应集装箱涂装的生产工艺,也能达到集装箱涂料性能指标的一种涂料。     

水性集装箱涂料的制备与研究

采用自制水性树脂制备了一种水性集装箱配套涂料体系。重点研究了成膜物和固化剂对涂料性能的影响,同时对底漆中锌粉和防沉剂用量,以及中层漆/内面漆中PVC含量进行了详细的试验分析。研制的水性集装箱涂料通过了美国KTA试验室认证。     

我国集装箱涂料现状和发展趋势

回顾我国集装箱制造业的发展历程。阐述了我国集装箱涂料的现状及国内外集装箱涂料发展趋势。指出了集装箱涂料的水性化是必然趋势,其配套涂料体系也日趋完善。     

钢结构带锈涂装用水性自干封闭涂料体系的制备

介绍了一种应用于带锈钢结构涂装的水性自干封闭涂料体系。重点阐述了水性自干封闭底漆及配套水性面漆的制备、施工工艺。探讨了分散剂、防锈颜料、颜基比以及成膜助剂与中和剂的选择对涂料体系性能的影响。该涂料体系性能达到或超过现有溶剂型醇酸涂料体系,满足企业安全生产的需求。     

水性自固化无机富锌涂料的研究进展及其应用

总结了水性无机富锌涂料的种类、机理以及现状和发展趋势。介绍了水性无机富锌涂料的施工及配套涂层体系的特点和耐腐蚀性能。     

钢结构用水性自干涂料防腐蚀性的影响因素探讨

研发了以水性双组分环氧涂料为底漆、水性丙烯酸涂料为面漆,用于钢结构的自干防腐蚀涂料的配套体系,探讨了各因素对涂层防腐性的影响。     

常温固化FEVE氟碳涂举的应用进展

综述了常温固化氟碳涂料及其配套涂层体系的应用进展。介绍了氟碳涂料在低VOC和自清洁方面的应用,以及主流氟碳涂层配套体系和近期发展起来的配套涂层体系的应用。氟碳涂层体系失效的主要原因有3方面：施工不到位;涂层体系不匹配：对氟碳漆性能的过高期望。     

国内新型功能涂料的最新研究

介绍了电厂烟囱用改性有机硅内衬涂料、ORV金属涂层封闭剂、新型无溶剂轻质环氧修补材料、耐高温高发射率涂料、镁合金复合有机涂层、聚脲汽车涂料、水性环氧阻燃涂料、室内墙面智能涂料体系、聚乙烯渔网防污涂料、取向硅钢水性无铬绝缘涂料、双组分膨胀型防火涂料和水性UV固化真空镀膜涂料等几种功能涂料的最新研究进展,并对功能涂料的研究方向进行了展望。     

集装箱涂装线VOC治理研究

综述了集装箱生产污染物排放概况,归纳了集装箱涂装线现行VOC治理技术及水性涂料的技术难点,分析了集装箱水性涂料与溶剂型涂料的施工工艺差别。指出集装箱水性涂料的VOC含量相比溶剂型下降了80%,使用水性涂料已成为集装箱制造业的必然趋势。     

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.     

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。     

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.