摘要:
An evaporative emissions filter for an engine air induction system. The evaporative emissions filter includes a hydrocarbon vapor-adsorbent member disposed within the air induction system. Hydrocarbon vapors present in the air induction system after engine shut-down are substantially retained in the adsorbent member until air flows through the air induction system after the engine starts.
摘要:
A fibrous element is described. The fibrous element includes a container member and an anti-microbial agent, wherein the anti-microbial agent is disposed within the container member. The container member can include structures such as an elongated fiber having multiple lobes with a longitudinally extending internal cavity including an opening from the internal cavity to the outer fiber formed between adjacent lobes, an elongated fiber having an internal longitudinally extending cavity having a longitudinally extending opening, and a particulate. The anti-microbial agent is capable of diffusing out of the container member and throughout the fibrous element in response to elevated relative humidity levels in order to contact and kill a microbial population.
摘要:
A unique filtration device (10) which continuously removes gas phase contaminants from an air stream through the use of partially hollow wicking fibers (20) impregnated with a fine solid carbon powder (18) or zeolites and formed into a fiber filter (12) with a selected chemisorptive liquid applied to one side of the fiber filter (12) and large carbon particles (19) applied to the other side of the fiber filter (12). The air stream to be cleaned is directed through filter element (12) which can capture the gas phase contaminants. The wicking fibers (20) include internal longitudinal cavities (22) filled with the fine carbon powder (18) and each having a relatively small longitudinal extending opening (24). The wicking fibers (20), to a shallow depth on one side of filter (12), are filled with the selected contaminant removing chemisorptive liquid through capillary action by which the individual wicking fibers (20) rapidly draw the selected chemisorptive liquid, with which they come into contact, through the internal cavities (22). The chemisorptive liquid and fine carbon powder (18) or zeolite powder remain within the wicking fiber cavities (22) and generally do not enter the space between the wicking fibers yet through the longitudinal openings (24) the fine carbon particles (18) and the chemisorptive liquid are in full fluid communication with the air stream flowing past the fibers (20).
摘要:
An air filtration or fluid treatment system includes a nonwoven filter media or mat (10) formed from a plurality of elongated generally hollow fibers (20) each having an internal cavity (22) which has an opening (24) to the fiber surface and each retaining within the internal cavity a large number of relatively small solid particles (18) which interact with the air or other fluid stream to be treated. The solid adsorbent particles (18), such as activated carbon, are permanently entrapped within the longitudinal cavities (22) of the fibers (20) without the use of an adhesive or without being embedded onto or within the polymer fiber.
摘要:
A nonwoven filter media or mat (10) formed from a plurality of elongated generally hollow fibers (20) each having an internal cavity (22) which has an opening (24), smaller than the cavity width, to the fiber (20) surface and each retaining within the internal cavity (22) a large number of relatively small solid particles (18). The small solid particles (18), which can be an adsorbent such as activated carbon, are permanently entrapped within the longitudinal cavities (22) of the fibers (20) without the use of an adhesive.
摘要:
A unique filtration method and device (10) which continuously removes several gas phase contaminants from an air stream through the use of partially hollow wicking fibers (20) impregnated with a selected liquid which can capture the gas phase contaminants. The wicking fibers (20) are generally disposed parallel and are formed into a filter element (12) which extends from the air stream to be cleaned into another air stream which can strip and carry away the unwanted gas phase contaminants. The gas phase contaminants are conveyed to the stripping air stream by a concentration factor induced molecular migration. The air stream to be cleaned is directed through a compartment (16) across which the filter element (12) extends so the complete air flow is through filter element (12). Filter element (12) also extends into another compartment (18) through which the stripping air stream flows. The wicking fibers (20) include internal longitudinal cavities (22) each with a relatively small longitudinal extending opening (24). The wicking fibers (20) are filled with the selected contaminant removing liquid through capillary action by which the individual wicking fibers (20) rapidly draw the selected liquid, with which they come into contact, through the internal cavities (22). The absorption liquid remains within the wicking fiber cavities (22) and generally does not enter the space between the wicking fibers yet through the longitudinal openings (24) the liquid is in full communication with the air stream flowing past the fibers (20).
摘要:
A process for making a crosslinked, highly porous body derived from a water-soluble, hydrogel polymer, wherein the porous body is characterized in that it has an open-celled 3-dimensional lattice structure, a density of less than about 1.0 g/cm.sup.3, a surface area of equal to or greater than about 30 m.sup.2 /g, and a compression strength of equal to or less than about 75% yield at 300 psi.
摘要翻译:一种制备由水溶性水凝胶聚合物衍生的交联的高度多孔体的方法,其中所述多孔体的特征在于其具有开孔3维晶格结构,密度小于约1.0g / cm 3 ,表面积等于或大于约30m 2 / g,压缩强度在300psi下等于或小于约75%的收率。
摘要:
There is provided a crosslinked, highly porous chitosan body, wherein the porous body is characterized in that it has an open-celled 3-dimensional lattice structure, a density of less than about 0.75 g/cm.sup.3, a surface area of equal to or greater than about 170 m.sup.2 /g, and a compression strength of equal to or less than about 75% yield at 300 psi.
摘要翻译:提供了交联的高度多孔的壳聚糖体,其中多孔体的特征在于其具有开孔三维晶格结构,密度小于约0.75g / cm 3,表面积等于或大于 约170m 2 / g,在300psi下的压缩强度等于或小于约75%。
摘要:
A crosslinked, highly porous body derived from a water-soluble, hydrogel polymer, wherein the porous body is characterized in that it has an open-celled 3-dimensional lattice structure, a density of less than about 1.0 g/cm.sup.3 a surface area of equal to or greater than about 30 m.sup.2 /g, a compression strength of equal to or less than about 10% yield at 10 psi, and an average pore diameter of less than about 1000 Angstroms.When the hydrogel polymer used is guar gum, the resulting product is particularly useful for thermal insulation applications.
摘要翻译:衍生自水溶性水凝胶聚合物的交联的高度多孔体,其中所述多孔体的特征在于其具有开孔三维晶格结构,密度小于约1.0g / cm 3,表面积 等于或大于约30m 2 / g,在10psi下的压缩强度等于或小于约10%,平均孔径小于约1000埃。 当使用的水凝胶聚合物是瓜尔胶时,所得到的产品对于绝热应用特别有用。
摘要:
Support matrices are prepared by titanating the surface hydroxyl groups of refractory inorganic oxides with a titanium tetrahalide, such as TiCl.sub.4, reacting each of the remaining halogens of the surface-titanated oxide with one of the amino groups of diamine, and thereafter reacting the remaining amino group with one of the functional groups of a dialdehyde or diisocyanate. Titanating is carried out by contacting a refractory inorganic oxide with titanium tetrahalide, preferably in the absence of a solvent for the titanium tetrahalide, removing excess and unreacted titanium tetrahalide and heating the titanated inorganic oxide at a temperature of from about 80.degree. C. to about 200.degree. C. in an inert atmosphere of nitrogen, argon or helium, or in a vacuum. Such support matrices may be used to bind enzymes, affording effective immobilized enzyme systems.