1033 results about "Thermosetting polymer" patented technology

A polishing pad is formed as a one-piece article having a region which is transparent and an adjacent region which is opaque. The article is formed by solidifying a flowable polymeric material which at least initially has a uniform composition. The flowable polymeric material is processed during a molding operation to provide the transparent region and the adjacent opaque region. Types of polymeric material suitable for making the polishing pad include a single thermoplastic material, a blend of thermoplastic materials, and a reactive thermosetting polymer.

This invention relates to a thermally conductive moldable polymer blend comprising a thermoplastic polymer having a tensile at yield of at least 10,000 psi; at least 60% by weight of a mixture of boron nitride powders having an average particle size of at least 50 microns; and a coupling agent. The composition displays a thermal conductivity of at least about 15 W / m DEG K and it is capable of being molded using high speed molding techniques such as injection molding.

Advanced structural components comprising a foamed thermoplastic that can be used in virtually any application where wooden components have a use. Such structural components can comprise sized lumber, shaped trim, posts, beams or shaped structural members. An advanced profile composite structural component comprising an exterior capping layer with an interior comprising a foamed thermoplastic can be used in the assembly of fenestration units adapted to residential and commercial structures. Preferably the profile structural component can be used in a window or door assembly. The profile member is adapted for ease of construction of the fenestration units, can be easily installed in a rough opening to framing members, and can be trimmed and adjusted on site. The profile is structurally strong, thermally stable, shrink resistant and will accept and retain the insertion of fasteners such as staples, nails and screws permanently with substantial retention and little or no damage to the units. The profile structural components possess strength that permits the manufacture of a structurally sound fenestration unit from two or more foamed profile members or other conventional members.

A formaldehyde-free curable aqueous composition containing polyvinyl alcohol, a multi-functional crosslinking agent, and, optionally, a catalyst. The composition may be used as a binder for non-woven products such as fiberglass insulation. The non-woven products are formed by contacting the formaldehyde-free curable aqueous composition with fibrous components and the mixture is cured to form a rigid thermoset polymer providing excellent strength and water resistance of the cured nonwoven product.

Hollow thermoexpandable particles or microspheres are provided that contain hydrocarbon blowing agents and have a shell polymer that can be softened at the onset of the expansion temperature and solidified at a higher temperature (thermoset) in an expanded state. Preferably, the microspheres have a shell of thermally expandable and thermally crosslinkable polymer and a hollow interior that contains a hydrocarbon liquid that boils at a temperature below the heat activated crosslinking temperature of the polymer shell. The crosslinking of the shell polymer during or after expansion, which is heat activated at an elevated temperature, can solidify the shell polymer and, then, maintain the expanded volume of the microspheres. The thermoexpandable thermoset polymer particles are useful in insulation, packaging, for making foam materials such as polyurethane or polyisocyanurate rigid foams. The invented thermoset microspheres can substantially improve the close cell percentage and compressive strength of the foam materials and make the foam manufacturing less hazardous.

Thermoset polymer particles are used in many applications requiring lightweight particles possessing high stiffness, strength, temperature resistance, and / or resistance to aggressive environments. The present invention relates to the use of two different methods, either each by itself or in combination, to enhance the stiffness, strength, maximum possible use temperature, and environmental resistance of such particles. One method is the application of post-polymerization process steps (and especially heat treatment) to advance the curing reaction and to thus obtain a more densely crosslinked polymer network. In general, its main benefits are the enhancement of the maximum possible use temperature and the environmental resistance. The other method is the incorporation of nanofillers, resulting in a heterogeneous “nanocomposite” morphology. In general, its main benefits are increased stiffness and strength. Nanofiller incorporation and post-polymerization heat treatment can also be combined to obtain the benefits of both methods simultaneously. The present invention relates to the development of thermoset nanocomposite particles. It also relates to the optional further improvement of the heat resistance and environmental resistance of said particles via post-polymerization heat treatment. Furthermore, it also relates to processes for the manufacture of said particles. Finally, it also relates to the use of said particles in the construction, drilling, completion and / or fracture stimulation of oil and natural gas wells; for example, as a proppant partial monolayer, a proppant pack, an integral component of a gravel pack completion, a ball bearing, a solid lubricant, a drilling mud constituent, and / or a cement additive.

The present invention relates to light weight composite materials which comprise a metallic layer and a polymeric layer, the polymeric layer containing a filled thermoplastic polymer which includes a thermoplastic polymer and a metallic fiber. The composite materials of the present invention may be formed using conventional stamping equipment at ambient temperatures. Composite materials of the present invention may also be capable of being welded to other metal materials using a resistance welding process such as resistance spot welding.

A composition of matter comprising a water-swellable IPN or semi-IPN including a hydrophobic thermoset or thermoplastic polymer and an ionic polymer, articles made from such composition and methods of using such articles. The invention also includes a process for producing a water-swellable IPN or semi-IPN from a hydrophobic thermoset or thermoplastic polymer including the steps of placing an ionizable monomer solution in contact with a solid form of the hydrophobic thermoset or thermoplastic polymer; diffusing the ionizable monomer solution into the hydrophobic thermoset or thermoplastic polymer; and polymerizing the ionizable monomers to form a ionic polymer inside the hydrophobic thermoset or thermoplastic polymer, thereby forming the IPN or semi-IPN.

A method of preparing a dental implant and prosthetic device in-house at the site of a dental procedure from a preparation kit, without requiring an external third-party lab to prepare the final prosthetic device. The kit contains a porous block, a thermoset polymeric resin, and an initiator, where the resin and initiator are both packaged in substantially airtight and substantially opaque packaging. The resin and initiator are combined together to form a resin mixture which is then infiltrated into the pores of the porous block to form an esthetic material. A digital scan of at least a portion of a patient's jaw is used to provide the desired shape of the dental device to a cutting mechanism, which then cuts the filled or un-filled porous block based on the shape provided to it from the digital scan.

The invention discloses a thermoplastic polymer-based heat-conducting composite material, which belongs to the technical field of polymer materials. The thermoplastic polymer-based thermally conductive composite material provided by the present invention has a higher thermal conductivity when adding less thermally conductive filler; the thermally conductive composite material includes a thermoplastic polymer matrix and a thermally conductive filler, and also includes compatible polymers. The present invention introduces a polymer that is incompatible with the polymer matrix into the composite system, so that the thermally conductive filler is selectively distributed in one of the phases, thereby significantly increasing the packing density of the thermally conductive filler in the polymer component of this phase, thereby improving the The overall thermal conductivity of the material; when the ratio of the two is 50 / 50, the thermal conductivity of the material can reach the thermal conductivity when the amount of thermal conductive filler is doubled.

Melt additive ionic and non-ionic surfactants to impart stable durable hydrophilicity to thermoplastic polymers or blends thereof.

A preparation kit for preparing dental prosthetic devices in-house at the site of a dental procedure, without requiring an external third-party lab to prepare the final prosthetic device. The kit contains a porous block, a thermoset polymeric resin, and an initiator, where the resin and initiator are both packaged in substantially airtight and substantially opaque packaging. The resin and initiator are combined together to form a resin mixture which is then infiltrated into the pores of the porous block to form an esthetic material. A digital scan of at least a portion of a patient's jaw is used to provide the desired shape of the dental device to a cutting mechanism, which then cuts the filled or un-filled porous block based on the shape provided to it from the digital scan.

A method of manufacturing an inflatable dunnage bag having a wall construction of two integrally fused layers of thermoplastic polymer, the outer layer of which is a sleeve of strips of woven polymer, the inner of layer of which is a continuous layer of gas impervious polymer. The ends of the sleeve are sealed against the escape of gas. The wall of the bag has a valve for the admittance of gas to the interior of the bag. The bag is formed by deposition of a continuous molten layer of gas impervious polymer to a sleeve of strips of woven polymer, installing a valve for admittance of gas into the wall of the sleeve and forming a gas tight seal at the ends of the sleeve. Deposition of the continuous layer of gas impervious polymer may be a two-step process wherein a molten layer of gas impervious polymer is deposited to one exterior side of the flattened sleeve, then to the other exterior side of the flattened sleeve and the sleeve turned "inside-out". The ends of the bag are sealed, may be folded, the folds secured to the exterior of the bag by adhesive and a binding strip. The dunnage so manufactured is strong, lightweight, scuff resistant, moisture resistant, reusable or easily recyclable.

A process is provided for producing a compatibilized polymeric blend. A first thermoplastic polymer and a reactive moiety are provided to a progressive melt kneading apparatus. The reactive moiety comprises a first reactive group capable of reacting with the first thermoplastic polymer but not a second polymer and a second reactive group capable of reacting with the second polymer but not the first polymer. The first thermoplastic polymer and the reactive moiety are then melt kneaded so that the first reactive group reacts with the first thermoplastic polymer and the second reactive group is grafted to the first thermoplastic polymer, forming a molten self-compatibilizer. A molten second polymer is then provided. The molten self-compatibilizer is melt kneaded with the molten second polymer so that the second reactive group reacts with the second polymer to form a compatibilized polymeric blend. Also provided are articles formed from the compatibilized polymer blend.

A polishing pad is formed by solidifying a flowable polymeric material at different rates of cooling to provide a polishing pad with a transparent region and an adjacent opaque region. Types of polymeric material suitable for making the polishing pad include a single thermoplastic material, a blend of thermoplastic materials, and a reactive thermosetting polymer.

An ultrasonic transducer for use in a fluid medium includes at least one transducer core having at least one acoustic / electric transducer element. The ultrasonic transducer furthermore includes at least one decoupling element which is configured to reduce a structure-borne noise coupling between the transducer core and a housing. The decoupling element includes at least one porous plastic material, in particular a foamed plastic material. The porous plastic material includes at least one thermosetting polymer and / or at least one thermoplastic.

A composite fan casing for a gas turbine engine includes, in an exemplary embodiment, a core having a plurality of core layers of reinforcing fiber bonded together with a thermosetting polymeric resin. Each core layer includes a plurality of braided reinforcing fiber tows. The braids of reinforcing fiber tows are aligned in a circumferential direction with each fiber tow including a plurality of reinforcing fibers. The core also includes at least one additional fiber tow braided into at least one predetermined axial location to form at least one concentrated stiffening ring.

A peelable sealing structure includes a sealing layer and one or more optional additional layers. The peelable sealing structure includes a sealing surface that is formable into a peelable seal upon contact with a sealing substrate at all temperatures in a peelable seal temperature range. Moreover, the peelable sealing structure comprises a thermoplastic polymer and an additive dispersed within at least a portion of the thermoplastic polymer with the peelable sealing structure defining the sealing surface.

Methods and compositions for additive manufacturing that include reactive or thermosetting polymers, such as urethanes and epoxies. The polymers are melted, partially cross-linked prior to the depositing, deposited to form a component object, solidified, and fully cross-linked. These polymers form networks of chemical bonds that span the deposited layers. Application of a directional electromagnetic field can be applied to aromatic polymers after deposition to align the polymers for improved bonding between the deposited layers.

The present invention discloses the fabrication of polymer-coated, coated fiber composites, hybrid composites and a method and apparatus for fabricating the same. The invention provides for the maximum spraying and coating of a roving of coated fibers with molten polymer streams without making physical contact with a solid media, thus simultaneously preventing the fiber surface from getting damaged and stripping off the coating. When metal-coated fiber is used the invention improves the electromagnetic shielding properties of any subsequent product made from the inventive composite. The method and apparatus of the present invention uses sets of nozzle-type sprayers having multiple orifices to enable the thermoplastic or thermoset polymer to penetrate more efficiently into the fiber bundle, thereby providing a more uniform coverage of all fibers. The hybrid composites can consist of two or more types of reinforcements and one or more type of matrix polymer.

This invention relates to an amorphous non-glassy ceramic composition that may be prepared by curing, calcining and / or pyrolyzing a precursor material comprising silicon, a Group III metal, a Group IVA metal, and / or a Group IVB metal.