利用芬顿试剂预处理西咪替丁制药废水

西咪替丁制药废水 COD高 ,成分复杂。采用芬顿试剂预处理 ,COD去除率达 5 0 %以上。小试确定了芬顿法预处理西咪替丁废水的最佳反应条件 :H2 O2 质量浓度为 30 0 0 mg/ L,Fe SO4质量浓度为 75 0 m g/ L,氧化时间为 3h,p H为 3,反应温度为 70℃。工程调试结果与小试结果具有良好的相关性     

田菁胶化学改性产物在陶瓷坯体中的应用(中试)

一九八三年十一月至一九八四年八月,我们完成了《田菁胶化学改性产物在陶瓷坯体中应用》(小试),并于一九八四年九月通过了小试鉴定。根据我们小试的结果(小试结果请阅《中国陶瓷》1985年第1期),田菁胶化学改性产物应用于陶瓷坯体中,对提高泥料的可塑性,坯体的干燥强度,有较明显的效果。如泥料的可塑性可提高56％,     

在动态模拟装置上对水质稳定剂“79S”性能评价试验报告

根据上级指示,我们开展了对法国赫尔蒂公司为广州石化厂设计的阻垢缓蚀剂79S进行评定试验工作。三月中旬,我们在静态小试方面取得了一定的结果,为了进一步考核79S在动态情况下防腐和消垢的效果,又进行了动态模拟试验。试验是在静态小试基础上,按静态小试筛选出的最佳条件进行。一、试验装置试验流程,装置如图一所示。循环水由     

盐水中硫酸根含量测试方法的探讨

介绍了采用不同的分析方法对盐水中硫酸根含量测定结果的影响，认为在大型生产的中控和小试中可分别采用文中介绍的两种不同的分析方法，而以《烧碱生产分析》中介绍的方法应用于小试中为佳。     

城镇污水处理进水水质调研的必要性讨论

采用序批式活性污泥法(SBR)作为小试模型,通过改变工艺参数模拟城镇污水处理厂生化处理阶段,并对结果进行分析,选择合理的进水点,为污水厂设计及后期运行提供参考。小试模型通过A/B两组SBR装置模拟运行,通过对主要污染物去除效果和SVI变化,判断运行效果,从而得出结论。试验证明,通过小试可以真实地反应各取水点污水经过生化处理后,水质变化情况。     

环氧乙烷催化水合制乙二醇工艺放大研究

以环氧乙烷催化水合制乙二醇小试研究所开发出的一系列环氧乙烷均相催化剂和相应的工艺流程为基础,进行放大试验,考察催化剂的放大性能,进一步完善工艺技术。通过放大试验进一步验证了小试试验结果的正确性,并对生产工艺的最优化条件进行了筛选和确定,为下一步进行工业化生产奠定了坚实的基础。     

SMA聚合物小试研究

介绍了苯乙烯和马来酸酐二元无规共聚物(SMA)小试研究情况与试验结果,为三元SMA及中试、工业化生产奠定基础。     

新型水性丙烯酸二级分散体中试工艺及性能研究

通过粒径分布、FTIR和分子量等分析对新型水性丙烯酸二级分散体进行了表征,并从中试关键工艺、水性丙烯酸二级分散体性能及涂膜性能等3方面对新型水性丙烯酸二级分散体的中试工艺及性能进行了研究。结果表明,中试水性丙烯酸二级分散体的粒径均比小试的大;小试、中试水性丙烯酸二级分散体的FTIR图谱基本一致,均为苯丙型丙烯酸树脂水分散体;第2次中试的水性丙烯酸二级分散体的性能指标基本接近小试的测试结果;中试水性丙烯酸二级分散体制漆后,干性和耐水性均较小试下降;粒径和分子量是影响水性丙烯酸二级分散体的主要因素,中试的初始导热油温度应控制在130～135℃,以保证较小的粒径和较大的分子量。     

第二部份——关于合理切割馏份提高合脂皂质量的扩大试验

根据小试结果，合理切割馏份是提高合脂皂质量增加合脂酸在肥皂中用量的效果较好且简单易行的方法。考虑到小试的研究结果都是以较纯的合脂皂为样品在实验室中测得的，而在实际生产中，切割合脂酸馏份时总是夹带有非主馏份酸，制皂配方成型时还     

MBS树脂合成技术的中试研究(Ⅱ)MBS胶乳的合成

阐述了MBS接枝胶乳”粒子设计”的依据,在已有MBS胶乳合成小试技术和SBR胶乳合成中试研究的基础上,进行了MBS胶乳合成技术的中试研究,着重研究了甲基丙烯酸甲酯和苯乙烯的接枝顺序、接枝率和橡胶相含量等对PVC／MBS抗冲性能的影响,以及接枝聚合反应温度对MBS树脂接枝率的影响,并将中试试验结果与小试结果进行了对比,为5000t／aMBS生产装置提供了设计依据。     

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。