常温固化水性环氧酯防腐涂料的研究

以环氧树脂和干性油脂肪酸为主要原料，合成了常温固化环氧酯树脂，并经乳化制得乳液。考察了环氧树脂、脂肪酸、酸值、乳化工艺等对乳液性能的影响。通过选用合适有效的闪蚀抑制剂和活性颜料，解决了以该乳液制得的水性涂料的闪蚀问题。本水性环氧酯防腐涂料性能与溶剂型环氧酯防腐涂料性能相当。     

一种水性环氧酯防腐涂料的研究及应用

以水性环氧酯树脂为主要成膜物质,通过对粉料、助剂等进行选择、搭配,对比检测数据,评判应用性能,制得一种环保水性环氧酯防腐涂料。结果表明:水性环氧酯防腐涂料能较好地应用于水性防腐领域。     

新型环氧硅酸酯防腐涂料的研制

将环氧树脂和硅酸酯预聚物通过催化缩合反应,制得环氧硅酸酯涂料,兼有有机和无机涂料的优点,具有高硬度、高耐磨、高附着力、优异的抗渗性、抗溶剂溶胀、抗介质氧化等性能。本文介绍了环氧硅酸酯树脂的合成以及环氧硅酸酯新型防腐涂料的制备。     

石墨烯涂料在岛礁环境车辆上的应用研究

通过石墨烯重防腐涂料的配方设计、石墨烯分散工艺技术研究以及性能研究,对石墨烯重防腐涂层进行了设计并对其应用进行了评价,分析了石墨烯重防腐涂料相较传统富锌防腐涂料的特性与优势。从石墨烯重防腐涂料的结构特点出发,探讨了石墨烯重防腐涂料的腐蚀防护机理,并针对车辆在岛礁使用环境特点提出了新型重防腐涂料体系配套方案。对配套方案的腐蚀防护性能进行评估,结果表明以石墨烯为基础的重防腐涂层体系腐蚀防护性能远优于以传统环氧富锌涂料为基础的重防腐涂层体系。新型石墨烯重防腐涂料体系满足岛礁车辆腐蚀防护的需要。     

铁路桥梁支座用环氧富锌防腐涂料耐盐雾性能研究

通过对铁路桥梁支座用环氧富锌防腐涂料耐盐雾性能的研究,制得了具有优异防腐功能的新型环氧富锌涂料。研究了涂膜的PVC、硅烷偶联荆和环氧固化剂对环氧富锌防腐涂料耐盐雾性能的影响。结果表明当涂膜的PVC为42％、干漆膜中锌粉含量为82％,且配方中选用某环氧基硅烷偶联荆和某腰果油改性环氧固化剂时,环氧富锌防腐涂料的耐盐雾腐蚀可达1518h。     

聚天门冬氨酸酯聚脲涂料的研制及在海洋重防腐领域的应用研究

选择不同活性的聚天门冬氨酸酯树脂和异佛尔酮二异氰酸酯(IPDI)三聚体为主要成膜物质配制涂料,讨论了树脂种类及配比、固化剂种类、助剂和有机溶剂等对涂料性能的影响,制得了高固体分、低活性、慢反应且防腐、耐候性能优异的新型聚脲重防腐涂料;同时,对聚天门冬氨酸酯聚脲涂料与环氧富锌底漆两涂层配套体系按照海洋重防腐标准ISO20340标准进行性能测试,结果表明,配套体系性能完全满足ISO20340标准要求;最后,对聚天门冬氨酸酯聚脲涂料与环氧富锌底漆两涂层配套体系与传统的"环氧富锌底漆+环氧中间漆+丙烯酸聚氨酯"三涂层配套体系进行了分析对比     

提高环氧重防腐涂料耐腐蚀性能的配方设计

介绍了环氧重防腐涂料的耐腐蚀机理,讨论了提高环氧重防腐涂料耐腐蚀性的配方设计要点。     

水性环氧防腐涂料配方中助剂的应用研究

水性环氧防腐涂料应用对现有社会发展具有重要影响,很多行业发展中为了提升防腐性能,都已经将涂料防腐性能改进作出了分析。实践证明,以助剂添加,能够提升水性环氧防腐涂料防腐性能,对于改进防腐涂料应用控制具有重要保障意义。鉴于此,本文针对水性环氧防腐涂料配方中助剂的应用研究进行了分析,旨在本文研究帮助下,能够为助剂添加与水样环氧防腐涂料应用提供参考。     

改进型耐高温防腐涂料的制备

以一种市售重防腐涂料配方为基础配方,通过添加有机硅树脂、SiC微粉、硅烷偶联剂等组分,研制出一种改进型耐高温防腐涂料,并对添加的组分在耐高温防腐涂料中的作用机理以及对涂层性能的影响进行了讨论.实验结果表明,有机硅树脂、SiC微粉的加入,使原涂层的最高耐热温度从230℃上升到390℃,大大提高了涂层的耐热性;SiC微粉和硅烷偶联剂的加入量分别为7 g和0.6 g时,涂层的综合性能最佳.     

涤纶废料制环氧酯底漆

介绍了涤纶废料制环氧酯的配方、生产工艺以及配制的环氧底漆的性能。     

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。