民用飞机发动机用耐高温防腐涂料

以环氧改性有机硅树脂为基料，加入耐高温、耐油、防火、隔热的颜填料和N-11固化剂，配成GT系列防腐涂料。该涂料具有常温固化、长期耐高温、耐油、隔热防火等性能，可用作民用飞机发动机的耐高温防腐涂料。     

一种耐高温隔热涂料的性能检测

对一种使用温度在700℃以上的保温隔热涂料,在实际使用中的保温隔热性能进行检测,该涂料在850℃下2 min后隔热温度在200℃以内,在700℃下5 min后隔热温度为285℃,适用于700℃以上高温环境下需要短时间隔热保护的产品。     

热反射颜料对彩色反射隔热涂料的影响

研究了热反射颜料的光学性能对彩色反射隔热涂料隔热性能的影响。制备了黄色、灰色、棕色3种色系彩色反射隔热涂料,并与同色系普通隔热涂料做了性能对比。测试结果显示:灰色和棕色系深色反射隔热涂料隔热效果提升显著。灰色系热反射隔热涂料比相同颜色普通隔热涂料近红外反射比提高3.23倍。户外曝晒2 h后,红外成像仪监测样板的表面温差可达6~7℃,降温效果显著。     

一种短时间保温的耐高温隔热涂料

针对产品保温隔热的需要,研制一种耐热温度超过800℃,在短时间内使用的保温隔热涂料,该涂料在850℃左右的环境下使用,3 min内保温隔热温度低于250℃,适用于高温环境下短时间需要保温隔热的产品。     

新型环保隔热涂料的研究

以水性丙烯酸树脂为粘结剂,廉价的无机黏土为主要隔热骨料,配以其他助剂制备了一种新型环保隔热涂料.通过对骨料类型、用量及粒径的讨论得到最佳的隔热涂料配方.平均温度70 ℃时,隔热涂料的导热系数为0.067 W/(m·K);在钢板上涂覆3 mm该涂料,可使钢板从内侧的150 ℃降低至外侧的100 ℃,温差达50 ℃.热重分析表明,该涂料在低于180 ℃时具有良好的热稳定性,特别适合纺织印染工业印染加工用异型设备的保温.     

高温隔热涂料的保温隔热性能改进探讨

针对超过800℃条件下使用的高温隔热涂料,从涂料的填料入手并利用聚氨酯泡沫塑料作辅助隔热层,使其保温隔热性能得到改进和提高,在一定条件下满足因产品升级而对保温隔热性能提高的要求,通过中空填料的运用和高温隔热涂料+聚氨酯泡沫塑料的复合隔热涂层,提高了耐高温隔热涂料的保温隔热性能,延长保温隔热涂料的有效隔热时间。     

隔热节能型氟碳涂料的制备

分别研究了硅藻土、空心玻璃微珠、纳米氧化锡锑(ATO)粉3种不同隔热机理的功能填料对聚偏氟乙烯涂料(PVDF光油)隔热效果的影响,并在此基础上采用正交试验法优化隔热保温氟碳涂料的配方,制备了一种具有协同隔热效应的复合型隔热保温氟碳涂料。测试结果表明:复合型隔热保温氟碳涂料的隔热温差可达16.9℃。     

一种耐高温隔热涂料的保温运用

对一种使用温度在800℃、隔热时间6 min的高温隔热涂料,运用在发热零件的保温隔热中,由于选择配料的着重点不同,保温隔热效果存在明显的差异。在配料中使用中空填料,局部调整配料比,使高温隔热涂料用作于高温保温涂料。     

一种耐高温隔热涂料的研制

研制了一种在800℃以上使用的保温隔热涂料。该涂料在850℃左右的环境下使用,2min后隔热温度在200℃以内,并保留原漆膜。适用于高温环境下对产品的短期隔热保护。     

复合型水性丙烯酸酯外墙隔热涂料的研制

根据隔热涂料的隔热机理,通过添加空心玻璃微珠、热反射隔热粉、硅藻土、氧化铝等隔热功能材料,分别制备了阻隔型、反射型、热反射型、辐射型4种水性丙烯酸酯外墙隔热涂料,测试上述4种隔热涂料的隔热温差,以此实验结果为基础,通过正交实验设计得到集阻隔、反射、辐射3种隔热机理为一体的复合型水性丙烯酸酯外墙隔热涂料最佳配方,测试结果表明其隔热温差可达8.7℃,涂膜综合性能优良,无毒环保,对社会节能和环保具有重大的现实意义。     

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.     

Many Drugs of Abuse May Be Acutely Transformed to Dopamine,Norepinephrine and Epinephrine In Vivo

It is well established that a wide range of drugs of abuse acutely boost the signaling of the sympathetic nervous system and the hypothalamic–pituitary–adrenal (HPA) axis, where norepinephrine and epinephrine are major output molecules. This stimulatory effect is accompanied by such symptoms as elevated heart rate and blood pressure, more rapid breathing, increased body temperature and sweating, and pupillary dilation, as well as the intoxicating or euphoric subjective properties of the drug. While many drugs of abuse are thought to achieve their intoxicating effects by modulating the monoaminergic neurotransmitter systems (i.e., serotonin, norepinephrine, dopamine) by binding to these receptors or otherwise affecting their synaptic signaling, this paper puts forth the hypothesis that many of these drugs are actually acutely converted to catecholamines (dopamine, norepinephrine, epinephrine) in vivo, in addition to transformation to their known metabolites. In this manner, a range of stimulants, opioids, and psychedelics (as well as alcohol) may partially achieve their intoxicating properties, as well as side effects, due to this putative transformation to catecholamines. If this hypothesis is correct, it would alter our understanding of the basic biosynthetic pathways for generating these important signaling molecules, while also modifying our view of the neural substrates underlying substance abuse and dependence, including psychological stress-induced relapse. Importantly, there is a direct way to test the overarching hypothesis: administer (either centrally or peripherally) stable isotope versions of these drugs to model organisms such as rodents (or even to humans) and then use liquid chromatography-mass spectrometry to determine if the labeled drug is converted to labeled catecholamines in brain, blood plasma, or urine samples.     

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。     

Inorganic/organic nanocomposite coatings: The next step in coating performance

Inorganic/organic hybrid materials have considerable promise and are beginning to become a major area of research for many coating usages, including abrasion and corrosion resistance. Our primary approach is to prepare the inorganic phase in situ within the film formation process of the organic phase. The inorganic phase is introduced via sol-gel chemistry into a thermosetting organic phase. By this method, the size, periodicity, spatial positioning, and density of the inorganic phase can be controlled. An important aspect of the inorganic/organic hybrid materials is the coupling agent. The initial task of the coupling agent is to provide uniform mixing of the oligomeric organic phase with the sol-gel precursors, which are otherwise immiscible. UV-curable inorganic/organic hybrid systems have the advantages of a rapid cure and the ability to be used on heat sensitive substrates such as molded plastics. Also, it is possible to have better control of the growth of the inorganic phase using UV curing. It is our ultimate goal to completely separate the curing of inorganic and organic phases to gain complete control over the morphology, and hence optimization of “all” the coating properties. Thus far, it has been found that concomitant UV curing of the inorganic and organic phases using titanium sol-gel precursors afforded nanocomposite coatings which completely block the substrate from UV light while maintaining a transparent to visible light. Also, it has been found that the morphology of the inorganic phase is highly dependent on the concentration and reactivity of the coupling agent. Presented at the 82nd Annual Meeting of the Federation of Societies for Coatings Technology, October 27–29, 2004, in Chicago, IL.