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    • 1. 发明授权
    • High strength fibers of stereoregular polystrene
    • 立体定向聚苯乙烯的高强度纤维
    • US5071917A
    • 1991-12-10
    • US569492
    • 1990-08-20
    • David R. PedersonPeter E. PieriniHenry N. BeckMark J. Semer
    • David R. PedersonPeter E. PieriniHenry N. BeckMark J. Semer
    • D01F6/22
    • D01F6/22
    • The invention is a crystalline fiber comprising syndiotactic polystyrene, or a mixture. Preferably the fiber is a high strength fiber isotactic polystyrene and syndiotactic polystyrene wherein the fiber is monoaxially oriented, has a tensile strength of about 10,000 psi or greater, and a modulus of about 1,000,000 psi or greater.In another aspect the invention is a process for the preparation of fibers of syndiotactic polystyrene, or a mixture of isotactic polystyrene and syndiotactic polystyrene which comprises:A. contacting syndiotactic polystyrene, or a mixture of isotactic polystyrene and syndiotactic polystyrene with a solvent for the polystyrene at elevated temperatures under conditions such that a homogenous solution is formed which has sufficient viscosity to be extruded;B. extruding the solution through an orifice to form a fiber at elevated temperatures;C. quenching the fiber by passing the fiber through one or more zones under conditions such that the fiber solidifies;D. removing the solvent for the polystyrene from the fiber; andE. cooling the fiber to ambient temperature.In the embodiment where it is desirable to prepare high strength fibers, the fibers are further exposed to the following process steps:F. heating the fiber to a temperature above the glass transition temperature of the polystyrene;G. redrawing the fiber to elongate the fiber, maximize crystallinity, and induce monoaxial orientation of the polystyrene in the fiber.
    • 本发明是包含间同立构聚苯乙烯或混合物的结晶纤维。 优选地,纤维是高强度纤维全同立构聚苯乙烯和间同立构聚苯乙烯,其中纤维是单轴取向的,具有约10,000psi或更大的拉伸强度和约1,000,000psi或更大的模量。 另一方面,本发明是制备间同立构聚苯乙烯纤维或全同立构聚苯乙烯与间同立构聚苯乙烯的混合物的方法,其包括:A.将间同立构聚苯乙烯或全同立构聚苯乙烯与间同立构聚苯乙烯的混合物与聚苯乙烯溶剂 在升高的温度下,在形成具有足够的待挤出粘度的均匀溶液的条件下, B.通过孔口挤出溶液以在升高的温度下形成纤维; C.通过在纤维固化的条件下使纤维通过一个或多个区域淬火纤维; D.从纤维中去除聚苯乙烯的溶剂; 和E.将纤维冷却至环境温度。 在需要制备高强度纤维的实施方案中,纤维进一步暴露于以下工艺步骤:F.将纤维加热到高于聚苯乙烯的玻璃化转变温度的温度; G.重新拉伸纤维以拉长纤维,使结晶度最大化,并诱导纤维中聚苯乙烯的单轴取向。
    • 2. 发明申请
    • PLASMA ELECTRODE
    • 等离子电极
    • US20100021655A1
    • 2010-01-28
    • US12441852
    • 2007-09-21
    • Robert P. Haley, JR.Mark J. Semer
    • Robert P. Haley, JR.Mark J. Semer
    • H01J37/32C23C16/513
    • H01J37/32825H01J37/32009H01J37/32348H01J37/32605H01J37/32724
    • An improved electrode (44) useful for modifying a substrate using corona or plasma treatment or coating a substrate using plasma enhanced chemical vapor deposition under atmospheric or near atmospheric pressure conditions, the electrode comprising a body (10) defining at least a first cavity therein, the body having at least one inlet passageway (12) therein in gaseous communication with the first cavity (11) so that a gas mixture can be flowed into the first cavity by way of the at least one inlet passageway (12), the electrode having at least one outlet passageway (43) therein in gaseous communication with the first cavity so that a gas that is flowed into the first cavity can flow out of the cavity by way of the at least one outlet passageway. The improvement of the instant invention requires that the at least one outlet passageway be a slot (43) and that the body (10) include at least a first removable portion thereof, one edge of the first removable portion (30, 31) defining one side of the at least one outlet passageway (43).
    • 一种用于使用电晕或等离子体处理或使用等离子体增强化学气相沉积在大气压或接近大气压条件下涂覆基板的改进的电极(44),所述电极包括在其中限定至少第一腔的主体(10) 所述主体具有与所述第一空腔(11)气态连通的至少一个入口通道(12),使得气体混合物可以通过所述至少一个入口通道(12)流入所述第一空腔,所述电极具有 至少一个出口通道(43)与第一空腔气态连通,使得流入第一空腔的气体可以通过至少一个出口通道流出空腔。 本发明的改进要求,至少一个出口通道是槽(43),并且主体(10)至少包括第一可移除部分,第一可移除部分(30,31)的一个边缘限定一个 至少一个出口通道(43)的一侧。