化学镀镍工艺

概述了以铋（Bi)化合物和碲（Te)化合物中的至少一种为添加剂的化学镀镍液和化学镀镍工艺，可以获得与玻璃基板或者陶瓷基板的附着性优良的化学镀镍层，特别适用于以玻璃基板或者陶瓷基板为基体的磁性记录用硬盘驱动部品的制造。     

无机粉体化学镀镍的研究进展

介绍了化学镀镍的特点以及镀液主要成分对镀层性能的影响?综述了无机粉末如石墨粉末、陶瓷粉末、铝粉、金刚石颗粒、空心玻璃微球等材料的化学镀镍研究及发展趋势．     

陶瓷颗粒酸性化学镀镍-磷的研究

研制了一种适合陶瓷颗粒表面化学镀镍的酸性化学镀镍工艺和配方,重点分析了镀液成分、温度、pH值、施镀时间等工艺参数对镀层外观质量的影响。性能测试结果说明陶瓷颗粒表面镍磷非晶态镀层的表面质量和结合力良好。     

现代镀覆技术 第二部分──化学镀镍（续5）

给出了适用于压铸锌合金、镁合金、钛合金、粉末冶金、铝合金、陶瓷、碳纤维、永磁体等材质工件的化学镀镍工艺。     

超声波化学镀制备WC-Ni复合粉体

采用粒度为106～180μm的WC粉末,通过超声波化学镀镍制备了一种表层具有金属特性而内部具有陶瓷性能的WC-Ni复合粉末介绍了该化学镀镍的工艺流程及各个工序讨论了各工艺条件对镀速的影响以及镀液中WC的加入量对粉末施镀前后增重与镀液稳定性的影响采用扫描电镜观察了粉末的微观形貌,通过能谱仪对抱镀后的粉末表层成分进行了分析。结果表明,经化学镀镍处理后的WC颗粒外观良好,且颗粒表层镍磷体积分数达到了98％以上该WC表面超声波化学镀镍工艺具有成本低、镀液稳定、易于操作等特点。     

硫酸钯活化印制电路铜箔化学镀镍

文章介绍了以硫酸/硫酸钯作为印制电路铜箔化学镀镍的活化液。考察了表面活性剂的用量、活化时间及活化温度对化学镀镍的影响,确定了最佳的工艺参数。并对经该活化液活化的铜箔进行化学镀镍,通过扫描电镜(SEM)对化学镀镍层的微观形貌进行表征,同时考察了该镍层的钎焊性。研究结果表明,该活化液适用于印制电路铜箔的化学镀镍前活化。     

无钯活化的化学镀镍工艺的研究

采用无钯活化的化学镀镍前处理,对丁二酸钠及甘氨酸在化学镀镍体系中上镍量及化学镀镍液催化的诱导期的实验,研究了在制取泡沫镍过程中适用于无钯活化的化学镀镍工艺.     

Al_2O_3一Fe_2O_3复相多孔陶瓷的强韧化研究

本文介绍了采用不锈钢纤维及化学镀镍铁粉增韧补强Ａｌ＿２Ｏ＿３一Ｆｅ＿２Ｏ＿３复相多孔陶瓷的方法：研究了不锈钢纤维含量及化学镀镍铁粉对材料性能的影响；探讨了其强韧化机理：用该材料进行了成形模具对比试验。结果表明，不锈钢纤维和化学镀镍铁粉均对材料有明显的强韧化效果。尤其是两者的复合强韧化效果更显著。     

Al2O3—Fe2O3复相多孔陶瓷的强韧化研究

本文介绍了采用不锈钢纤维及化学镀镍铁粉增韧补强Ａｌ２Ｏ３－Ｆｅ２Ｏ３复相多孔陶瓷的方法；研究了不锈钢纤维含量及化学镀镍铁粉对材料性能的影响。探讨了其韧化机理；用该材料进行了成形模具对比试验。结果表明，不锈钢纤维和化学镀镍铁粉均对材料有明显的强韧化效果，尤其是两者的复合强韧化效果更显著。     

烟台开发区四达科技开发有限公司为用户提供

1 NPL全光亮化学镀镍液 2 KMs高耐蚀、耐磨化学镀镍液 3 NP化学镀镍液(半光亮) 以上三种镀液都可连续补加至六周期,挂镀、滚镀皆可,并适用于自动分析自动补给装置。镀液性能稳定,可满足大规模生产需要,可满足装饰性及功能性需要,适用于石油化工、汽车零件、纺织机械及机针行业、食品机械、电子元器件、办公用品及机床、模具、液压元件、气动元件模具、阀门等。     

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。