二氧化硅消光剂研究进展

概述了二氧化硅消光荆的产品特性、国内外市场现状及发展趋势，分析了中国二氧化硅消光荆生产普遍存在的问题．指出了改善产品的孔结构、提高二氧化硅在涂料中的分散性和再分散性、发展多元化产晶、保障产品质量是中国二氧化硅消光剂生产企业急需解决的问题。特别介绍了天津化工研究设计院新近采用特殊的有机物处理工艺研制生产的高档二氧化硅消光剂，可替代进口产品，用于木器漆中取得良好的应用效果．     

超细二氧化硅消光剂

超细二氧化硅消光剂具有易于分散、加入量小、化学惰性高、消光性能好等特点,广泛应用在各种消光涂层和消光材料中,是重要的消光产品。文章综述了合成超细二氧化硅消光剂的种类、制备方法,介绍了其消光原理、消光度的影响因素以及未来发展方向。     

二氧化硅消光剂粉碎技术研究

二氧化硅消光剂的粒径与粒度分布在亚光涂料生产中起着重要的作用,选择合理的粉碎加工技术是提高二氧化硅消光剂生产效率、节约成本、降低能耗的最重要的环节.传统的盘式气流粉碎机、流化床式气流粉碎机及普通的介质磨在粉碎二氧化硅消光剂的过程中,存在能耗高、辅助设备多、操作环境差等不足之处.结合传统振动磨粉碎二氧化硅消光剂效果比较稳定的特点,设计出一种新型的节能、环保、性能可靠的粉碎二氧化硅消光剂的粉碎设备.     

二氧化硅项目落户湖北仙桃

总投资800万元、年产400吨纳米二氧化硅的湖北中辉新材料技术有限公司近日落户仙桃市通海口。该项目原料以秸秆和稻谷加工剩余的稻壳为主，每年消耗稻壳6000～7000吨。在生产过程所需燃料可自给自足。无须燃煤，也无须大量用电。二氧化硅用途广泛。低端产品可用作天然橡胶和合成橡胶生产的补强剂、饲料生产的载体或分散剂、塑料生产的配合剂、牙膏生产的摩擦剂等，高端产品广泛用作涂料生产的增稠剂和消光剂、塑料薄膜的开口剂、造纸业的消光剂等。     

赢创二氧化硅10月1日起全球提价

赢创工业集团日前宣布，自2010年10月1日起，将在全球范围内对其生产的沉淀法二氧化硅产品、气相法二氧化硅产品、特种氧化物以及消光剂提价，提价幅度最高为8％。     

赢创二氧化硅产品2010年10月1日在全球范围内提价

赢创工业集团最近宣布,自2010年10月1日起,在全球范围内对其生产的沉淀法二氧化硅产品、气相法二氧化硅产品、特种氧化物以及消光剂提价,提价幅度最高为8%。该价格调整是为了缓解由于法规、研发、技术服务、物流和生产等因素对公司造成的成本压力。赢创自20世纪90年代初期开始在中国生产特种化工产品,     

二氧化硅消光剂在水性涂料中的应用研究

探讨了影响二氧化硅消光剂在水性涂料中消光效果的因素,并对消光剂的沉降性进行了比较。介绍了二氧化硅消光剂的分散方法和添加方式。     

二氧化硅消光剂及其应用

介绍了二氧化硅消光剂的种类、典型产品、应用和分散方法等。     

二氧化硅消光剂及应用

介绍了二氧化硅消光剂的种类、性能、典型产品、应用和分散方法等。     

赢创二氧化硅产品10月1日起在全球范围内提价

<正>赢创工业集团日前宣布,自2010年10月1日起,在全球范围内对其生产的沉淀法二氧化硅产品、气相法二氧化硅产品、特种氧化物以及消光剂提价,提价幅度最高为8%。该价格调整是为了缓解由于法规、研发、技术服务、物流和生产等因素对公司造成的成本压力。     

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。