Abstract:
A method of making nonwoven fibrous materials suitable for use in a pollution control device or as a firestop, where the method comprises: providing a first slurry comprising water, first inorganic fibers, a first organic binder, and a first neutral pH flocculent; removing first waste water from the first slurry; optionally forming a first nonwoven fibrous material from the first slurry; providing a second slurry comprising a quantity of the first waste water, an optional quantity of relatively clean water, second inorganic fibers, a second organic binder, and a second flocculent that is the same and/or a different flocculent than that used in the first slurry; and forming a second nonwoven fibrous material from the second slurry. The addition of the first waste water in the second slurry does not adversely affect the flocculation of the second organic binder in the second slurry.
Abstract:
An insulation pad includes a binderless pack of glass fibers and an envelope around the binderless pack of glass fibers. The glass fibers are mechanically entangled by needling such that the binderless pack has a density of from 4.5 to 5.5 pounds per cubic foot. The insulation pad is used to insulate pipes and vessels.
Abstract:
The present invention provides a method for preparing a blanket containing a silica aerogel, and a blanket prepared by using the same and containing a silica aerogel, the method comprising the steps of: preparing a sol by mixing a water glass solution, a polar organic solvent and a silazane-based surface modifier; preparing a silica gel-substrate composite by dipping a substrate for a blanket into the sol and gellifying the same; and drying the silica gel-substrate composite. A blanket containing a silica aerogel and having high hydrophobicity and excellent physical properties, particularly, low tap density, high porosity and excellent mechanical flexibility can be prepared by using the least amount of a surface modifier without an additional surface modification step through the preparation method.
Abstract:
The present invention relates to a vacuum insulation material including an inner bag and to a method for manufacturing same. The method for manufacturing the vacuum insulation material includes: a step of manufacturing a core material; a step of compressing and packing the entire surface of the core material using an inner bag made of a breathable film material; a step of disposing a getter on the upper portion of the inner bag; and a step of vacuum-packing a covering material on the upper portion of the inner bag. The inner bag is made of polypropylene (PP), polyester (PET), and/or polyethylene. Since the inner bag is manufactured using a breathable film having fine holes, the method for manufacturing the vacuum insulation material may have improved efficiency, and the vacuum insulation material may be improved in terms of the long-term durability and vacuum insulation properties thereof.
Abstract:
A heat-insulation sheet includes a first silica xerogel layer, a second silica xerogel layer, and a composite layer. The first silica xerogel layer includes a first silica xerogel, and the second silica xerogel layer includes a second silica xerogel. The composite layer is located between the first silica xerogel layer and the second silica xerogel layer, and includes at least one type of unwoven fabric fibers, and a third silica xerogel. The third silica xerogel is located in a spatial volume of the unwoven fabric fibers.
Abstract:
Presently disclosed self-regulating thermal insulation (12) may include one or more thermal actuators (38) that may expand and contract in response to changes in temperature adjacent the thermal insulation, thereby automatically changing the thermal resistance of the thermal insulation. In this manner, a self-regulating thermal insulation may be configured to locally adjust in response to local changes in temperature of a part being insulated, for example, during curing or some other manufacturing process. Such self-regulating thermal insulation may be configured to respond to temperature changes without feedback control systems, power, or human intervention. One example of self-regulating thermal insulation may include a first plate (30), a second plate (32), a support structure (34) coupling the first plate and the second plate and defining an insulation thickness (48) therebetween, an internal partition (36) positioned between the first plate and the second plate, and at least one thermal actuator (38) positioned between the second plate and the internal partition.
Abstract:
Die Erfindung betrifft eine Atemgasschlauchanordnung zur Zufuhr eines Atemgases zu einer Atemmaske mit einer flexiblen Schlauchleitung (16), wobei einen flexiblen Mantelkörper (1), der die flexible Schlauchleitung (16) umgibt und sich entlang der Schlauchleitung (16) erstreckt.
Abstract:
Inorganic fibers having the composition: 10≤Al2O3≤50 mol %; 2≤K2O≤40 mol %; 30≤SiO2≤70 mol %; and in which SiO2+Al2O3+K2O>=80 mol % can be protected against surface crystallization of kalsilite by: including an amount of a nucleation promoting component effective to promote bulk crystallization in the glass; and/or providing on at least part of their surface, potassium scavenging materials.