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    • 2. 发明申请
    • Storage stable isocyanate-reactive component containing vegetable oil-based polyol
    • 含稳定的含有植物油基多元醇的异氰酸酯反应性成分
    • US20070238800A1
    • 2007-10-11
    • US11401510
    • 2006-04-11
    • Brian NealMicah MooreStanley HagerRandall Carter
    • Brian NealMicah MooreStanley HagerRandall Carter
    • C08G18/00
    • C08G18/632C08G18/283C08G18/36C08G18/4816C08G18/4845C08G18/485C08G18/6696
    • The present invention provides an isocyanate-reactive component containing at least 10 wt. %, based on the weight of the isocyanate-reactive component, of a vegetable oil-based polyol, a nonionic emulsifier containing one of an aliphatic alcohol ethoxylate and an aliphatic phenol ethoxylate having a polymerized ethylene oxide content of at least 25 moles per equivalent of alcohol or phenol and a HLB value greater than 17, one or more non-vegetable oil-based polyols, one or more silicone surfactants, and optionally, water or other blowing agents, catalysts, pigments and fillers, wherein the isocyanate-reactive component is storage stable at temperatures of from −10° C. to 60° C. for at least three days. The inventive isocyanate-reactive component can be shipped and stored at normal shipping and storage temperatures and still produce acceptable foam on a daily basis whilst helping to satisfy polyurethane foam and elastomer producers' “green” requirements.
    • 本发明提供了含有至少10wt。 %,基于异氰酸酯反应性组分的重量,植物油基多元醇,含有脂族醇乙氧基化物和脂族酚乙氧基化物之一的非离子乳化剂,其聚合的环氧乙烷含量为每当量的至少25摩尔 醇或酚,HLB值大于17,一种或多种非植物油基多元醇,一种或多种硅氧烷表面活性剂,以及任选的水或其它发泡剂,催化剂,颜料和填料,其中异氰酸酯反应性组分为 在-10℃至60℃的温度下保存至少三天。 本发明的异氰酸酯反应性组分可以在正常运输和储存温度下运输和储存,并且每天仍然产生可接受的泡沫,同时有助于满足聚氨酯泡沫和弹性体生产者的“绿色”要求。
    • 4. 发明授权
    • Noise suppressing exhaust mixer assembly for ducted-fan, turbojet engine
    • 用于管风扇,涡轮喷气发动机的噪声抑制排气混合器组件
    • US4117671A
    • 1978-10-03
    • US755837
    • 1976-12-30
    • Brian NealLars Q. Andersen
    • Brian NealLars Q. Andersen
    • F02K1/38F02K1/26F02K3/04
    • F02K1/386
    • To suppress jet noise emanating from a ducted-fan turbojet engine, an improved exhaust mixer assembly is disclosed that is mounted between the engine and the exhaust nozzle and that mixes the flow of high-velocity primary gases (turbine exhaust) with the lower-velocity air from the fan duct in a manner that achieves a significant reduction in the proportion of noise-causing high velocity gases while maintaining approximately the same thrust from the nozzle as other mixer-equipped engines. The mixer assembly includes an annular sleeve, a bulb-shaped plug disposed concentrically within the sleeve, and an annular corregugated mixer duct coaxially positioned between the plug and sleeve wherein these components are arranged so as to receive the primary and fan flows and separately redirect these flows within the assembly so that the flow of primary gases is rearwardly divergent while the flow of fan air is rearwardly convergent. As the primary and fan flows pass through a mixing plane at the aft terminus of the mixer duct, they intersect in a crossing pattern resulting from their divergent-convergent flow paths which yields faster and more complete mixing of the flows before they are discharged from the nozzle. The shaping and dimensioning of the sleeve, plug, and mixer duct are such that optimum mixing, and thus maximum suppression of noise, are achieved without introducing any excessive pressure losses in the mixer assembly and nozzle that otherwise would significantly diminish thrust.
    • 为了抑制从管风扇涡轮喷气发动机发出的喷气噪声,公开了一种改进的排气混合器组件,其安装在发动机和排气喷嘴之间,并且将高速主气体(涡轮机排气)的流动与低速 来自风扇管道的空气以实现显着降低噪声的高速气体的比例的方式同时保持与其它配备混合器的发动机大致相同的来自喷嘴的推力。 混合器组件包括环形套筒,同心地布置在套筒内的灯泡形插头以及同轴地位于插头和套管之间的环形校正混合器管道,其中这些组件被布置成接收主风扇流和风扇流, 在组件内流动,使得主要气体的流动向后发散,同时风扇空气的流动向后收敛。 由于主风扇和风扇流通过混合器管道的后端处的混合平面,它们以交叉图案相交,这是由它们的发散会聚流动路径产生的,这些流动路径在从流体排出之前产生更快和更完全的混合 喷嘴。 套筒,塞子和混合器管道的成型和尺寸使得在混合器组件和喷嘴中不引入任何过大的压力损失,否则将显着减小推力,从而实现最佳混合,从而实现噪声的最大抑制。