水性无机富锌涂料的研制

探讨了水性主剂的模数(即摩尔比率)、填料等对水性无机富锌涂料性能的影响,同时分析了水性无机富锌涂料替代溶剂型无机富锌涂料和溶剂型环氧富锌涂料作为防腐蚀底漆的可行性。     

混合型水性无机富锌涂料的制备及其性能研究

在片状无机富锌涂料中加入一定比例的球状锌粉,得到性能优异的混合型水性无机富锌涂料,探究了不同锌粉含量下富锌涂料涂层的耐腐蚀性能,通过常规性能测试、耐酸碱性实验对混合型水性无机富锌涂料涂膜进行性能测试。结果表明,当片状锌粉含量为40%、球状锌粉含量为10%时所得到的混合型水性无机富锌涂料性能最优。     

填料对水性无机富锌料综合性能的影响

水性无机富锌涂料是以硅酸盐溶液为主要成膜物质,以高含量的锌粉为防锈颜料的金属用水性重防腐蚀涂料,已在海洋环境、化工设施、设备、桥梁等领域广泛应用.但现有水性无机富锌涂料普遍存在涂膜物理机械性能差的问题,影响了涂料的推广应用,本文通过对水性无机富锌涂料中颜填料的种类、含量、配比等方面进行研究,提高了水性无机富锌涂料涂膜的综合性能.     

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。     

几种新型富锌涂料的研究进展

介绍了氧化石墨烯改性水性环氧富锌涂料、石墨烯纳米片/环氧富锌(Gnps/ZRE)复合涂料、高柔韧性、高附着力水性无机富锌涂料、石墨烯硅酸盐富锌防腐蚀涂料、水性聚苯胺/氧化石墨烯改性低锌粉含量防腐涂料、还原-氧化石墨烯(r-GO)改性环氧富锌涂料、耐盐雾双组分水性环氧富锌涂料、石墨烯浆料改性水性环氧富锌涂料、双电层水性无机富锌涂料、SnCl2/EtOH溶液法还原氧化石墨烯环氧富锌涂料、有机-无机杂化水性富锌涂料、水性富锌铝涂料、低锌含量石墨烯长效防腐涂料、自固化醇溶性无机富锌底漆和冷镀锌喷漆等几种新型富锌涂料的研究进展。     

水利工程钢结构用水性无机富锌涂料的制备及性能研究

简单介绍了水利工程钢结构用水性无机富锌涂料的应用要求,并对水性无机富锌涂料用原材料及制备工艺进行了阐述。重点研究了水性无机富锌涂料中基料、锌粉、硅烷偶联剂等原材料对涂料性能的影响,并进行了初步分析。结果表明:(1)采用高模数硅酸钾、硅溶胶与硅丙乳液作为涂料的基料,可以显著提高机械性能和防腐能力;(2)水性无机富锌涂料颜料选择球状锌粉和片状锌粉搭配使用,既提高了涂层的致密性,又提高了涂层外观平整度以及防腐能力。(3)硅烷偶联剂可以有效地提高水性无机富锌涂料的致密性与附着力。     

水性无机富锌涂料施工工艺探讨

分析了表面处理、施工环境对水性无机富锌涂料施工性能的影响，从实用角度提出了解决方案。介绍了水性无机富锌涂料漆膜的维修及封闭。     

水性无机富锌涂料及其改性

介绍了水性无机富锌涂料的优点及目前存在的一些问题,并指出通过对基料及颜填料的改性及各种助剂的添加来提高水性无机富锌涂料的综合性能。     

有机和无机富锌涂料的性能特征

介绍了有机和无机富锌涂料的组成、性能特征及在钢铁防腐领域的应用;提出水性无机富锌底漆将是未来富锌涂料的发展方向。     

水性无机富锌底漆

水性无机富锌涂料是以无机硅酸盐为基料、金属锌为底漆的重防腐涂料,具有良好的环保特性和附着力、耐候性、耐磨性、耐热性等性能。自固化无机富锌涂料是现在的研究重点,其中硅酸锂自固化无机富锌涂料耐水、耐温性好,自干速度快,但价格较贵。天津化工研究设计院研制的WZ系列水性硅酸锂富锌涂料性能与国外产品相当,价格低于进口产品。该院目前正在开发低表面处理的无机富锌涂料。     

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。