Abstract:
An embodiment relates to a redispersible polymer powder (RDP) composition for use in the preparation of dry mortar formulations, especially of cementitious bound tile adhesives (CBTA) and adhesives for external thermal insulation composite systems (ETICS). An embodiment further relates to a dry mortar formulation comprising said RDP composition. Embodiments relate to the composition and manufacture of water-redispersible polymer powders that comprise polyurethane powders, particularly where said polyurethane powders comprise particles of ground polyurethane foam. An embodiment is further directed to a method of improving adhesion of said polyurethane powder particles to mineral components of a dry mortar formulation. Furthermore, an embodiment is directed to a method of improving impact resistance of a cured dry mortar formulation without deteriorating workability of the wet mortar or the adhesion strength of the cured dry mortar formulation.
Abstract:
The disclosed system comprises an apparatus and method for continuously removing air from a mixture of ground polyurethane particles and a polyol liquid, including a deaerator (300) having an inlet (320) to receive a mixture and an outlet (335) to disperse the mixture, a rotating bowl (310), a pickup Tube (333) to catch the mixture and direct the mixture through a conduit (334) to the outlet, and vacuum chamber (325) encompassing the bowl. The rotation of the bowl imparts sufficient energy to the mixture to pump the mixture through the conduit.
Abstract:
Described are methods of grinding foams and foam powders produced by grinding foams. The methods include mixing foams together prior to grinding the foams. By mixing the foams together, the foams become easier to grind.
Abstract:
The disclosed device is directed towards a mixer apparatus (10) comprising a barrel (12) defining an interior (22) and an exterior (24). The barrel (12) has a first end (16) and a second end (18) opposite thereof. The barrel (12) defines at least one inlet (30) proximate to the first end (16) and an outlet (34) proximate to the second end (18). A motor unit (14) is in operative communication with the barrel (12). A moving element (44) is disposed in the interior of the barrel. The moving element (44) is configured to move material through the barrel (12) to the outlet of the barrel. At least one first mixing element ((60) is fluidly coupled to the outlet (34).
Abstract:
The disclosed device is directed towards a mixer apparatus (10) comprising a barrel (12) defining an interior (22) and an exterior (24). The barrel (12) has a first end (16) and a second end (18) opposite thereof. The barrel (12) defines at least one inlet (30) proximate to the first end (16) and an outlet (34) proximate to the second end (18). A motor unit (14) is in operative communication with the barrel (12). A moving element (44) is disposed in the interior of the barrel. The moving element (44) is configured to move material through the barrel (12) to the outlet of the barrel. At least one first mixing element ((60) is fluidly coupled to the outlet (34).
Abstract:
The present system comprises an apparatus and a process for continuously dispersing fine particles in a liquid. The apparatus comprises a mixer (200) that has at least one inlet (251) for receiving the fine particles and liquid and an outlet (254). The mixer further comprises a barrel (201) that has an inlet for accepting the fine particles and an outlet for dispersing the fine particles and a tank (250) for holding the liquid. The tank (250) has a top surface in which the barrel is disposed such that the outlet of the barrel (201) is disposed under the surface of the liquid. An inlet of a vacuum centrifuge (300) is coupled to the outlet (254) of the mixer (200) to receive a mixture of liquid and fine particles. A surge tank (400) is coupled to an outlet of the vacuum centrifuge (300), wherein the mixture is dispersed from an outlet of the surge tank.
Abstract:
The embodiments of the invention are directed to a composite material comprising a fiber reinforcing material, a binder resin and polyurethane foam particles. Other embodiments are related to a process for manufacturing a composite material comprising a fiber reinforcing material, a binder resin and polyurethane foam particles, the method comprising depositing the binder resin and polyurethane foam particles the fiber reinforcing material to form a composite precursor and treating the composite precursor to form the composite material
Abstract:
The disclosed device is directed towards a surge tank. The surge tank (10) comprises a side wall (12) including an interior surface (24). A bottom of tank (20) is coupled to the side wall (12), wherein the side wall and the bottom of tank define an interior of the surge tank (14) and an exterior of the surge tank (16). At least one inlet (28) is configured to fluidly couple the exterior of the surge tank with the interior of the surge tank. A weir (32) is fluidly coupled to the inlet (28) at the interior of the surge tank. A flexible element (38) is coupled to the weir proximate to the bottom of tank. An outlet (30) is defined in the bottom of tank.
Abstract:
The disclosed system comprises an apparatus and a method continuously removing air from a mixture of ground polyurethane particles and a polyol liquid. The apparatus for continuously removing air from a mixture of ground polyurethane particles and a polyol liquid comprises a deaerator having an inlet to receive a mixture of liquid and fine particles and an outlet to disperse the mixture. The deaerator further comprises a rotating bowl, wherein the bowl is attached to a shaft so that the bowl and the shaft rotate. The bowl has an inside and an outside surface that is coupled to the inlet of the deaerator to receive the mixture such that when the bowl is rotated, the mixture is spread on the inside surface of the bowl. A pickup tube is located in the bowl that catches the mixture and directs it through a conduit to the outlet. The rotation of the bowl imparts sufficient energy to the mixture to pump it through the conduit. A vacuum chamber that has a front plate and a back plate encompasses the bowl and the back plate contains an assembly by which the shaft rotates and the low absolute pressure within the vacuum chamber prevents bubbles from being re-entrained in the mixture as it is directed toward the outlet via the conduit.
Abstract:
This relates variously to techniques for comminuting polymeric foams, to techniques for preparing polymeric foams containing that comminuted foam, and to the resulting comminuted foam powder and polymeric foams. The procedures may be used on foams containing production contaminants such as polyolefins, paper, and foam skins and on other foams containing consumer contaminants such as wood, metal, leather, etc. The comminuted foam powder, with or without contaminants, preferably is screened or sifted to obtain a foam powder having a particle size of about 2 mm or less.