Abstract: A fiber-reinforced polymer composition comprising from about 60 wt. % to about 90 wt. % of a polymer matrix that contains a propylene polymer and from about 10 wt. % to about 40 wt. % of a plurality of long reinforcing fibers that are distributed within the polymer matrix, is provided. The polymer composition exhibits a dielectric constant of about 4 or less and dissipation factor of about 0.01 or less at a frequency of 2 GHz. Further, the polymer composition exhibits a Charpy unnotched impact strength of about 20 kJ/m2 or more as determined in accordance with ISO Test No. 179-1:2010 at a temperature of about 23° C., and a Limiting Oxygen Index of about 25 or more as determined in accordance with ISO 4589:2017.

Abstract: A long fiber-reinforced polymer composition is disclosed having excellent flame retardant properties. The flame retardant composition can include a flame retardant system comprised of a metal phosphinate in combination with elevated levels of a synergist, such as a polyphosphate. The composition can display excellent flame resistant properties at extremely small thicknesses.

Abstract: A fiber-reinforced polymer composition that comprises a polymer matrix that contains a propylene polymer is provided. The polymer matrix constitutes from about 20 wt. % to about 90 wt. % of the composition, and the composition further comprises a plurality of long reinforcing fibers that are distributed within the polymer matrix, wherein the fibers constitute from about 10 wt. % to about 60 wt. % of the composition. Further, the composition also comprises a stabilizer system comprising a sterically hindered phenol antioxidant, phosphite antioxidant, and thioester antioxidant.

Abstract: A lineal product includes a composite pultruded substrate having a solid outer surface, and a multi-layer coating extruded directly onto the outer surface. The coating comprises a solid extruded base layer comprising a first thermoplastic material extruded onto the outer surface, the base layer having a base-layer inner surface in intimate contact with the outer surface and a base-layer outer interface. The coating further comprises a solid extruded outer layer comprising a second thermoplastic material comprising polymethyl methacrylate extruded onto the first thermoplastic material, the solid extruded outer layer having an outer-layer interface in intimate contact with the base-layer outer interface and an outer-layer outer surface, wherein the intimate contact between the base-layer outer interface and the outer-layer interface forms a solid interface between the base layer and the outer layer. The solid extruded outer layer has a hardness of at least 1H pencil hardness.

Abstract: A long fiber-reinforced polymer composition is disclosed having excellent flame retardant properties, optionally in combination with long-term heat stability. The flame retardant composition can include a flame retardant system comprised of only two flame retardant components. The composition can display excellent flame resistant properties at extremely small thicknesses. The composition can also contain a stabilizer package that dramatically improves heat aging properties.

Abstract: A fiber-reinforced polymer composition that contains a polymer matrix, stabilizer system, and a plurality of long reinforcing fibers that are distributed within the polymer matrix is provided. The stabilizer system comprises an antioxidant, an ultraviolet light stabilizer, and a carbon material that includes carbon particles. The polymer composition defines a surface that exhibits a ?E value of from about 0.6 to about 3 after being exposed to UV light at a total exposure level of 2,500 kJ/m2 according to SAE J2527_2017092.

Abstract: A fiber-reinforced polymer composition comprising from about 60 wt. % to about 90 wt. % of a polymer matrix that contains a propylene polymer and from about 10 wt. % to about 40 wt. % of a plurality of long reinforcing fibers that are distributed within the polymer matrix, is provided. The polymer composition exhibits a dielectric constant of about 4 or less and dissipation factor of about 0.01 or less at a frequency of 2 GHz. Further, the polymer composition exhibits a Charpy unnotched impact strength of about 20 kJ/m2 or more as determined in accordance with ISO Test No. 179-1:2010 at a temperature of about 23° C., and a Limiting Oxygen Index of about 25 or more as determined in accordance with ISO 4589:2017.

Abstract: An electronic module that comprises a housing that receives at least one electronic component is disclosed. The housing contains a fiber-reinforced polymer composition comprising a polymer matrix that contains a thermoplastic polymer and a plurality of long reinforcing fibers that are distributed within the polymer matrix. The polymer composition exhibits a dielectric constant of about 4 or less and dissipation factor of about 0.01 or less at a frequency of 2 GHz. Further, the polymer composition exhibits a Charpy unnotched impact strength of about 20 kJ/m2 or more as determined in accordance with ISO Test No. 179-1:2010 at a temperature of about 23° C.

Abstract: An antenna module that comprises a housing that receives at least one antenna element configured to transmit and receive 5G radio frequency signals is disclosed. The housing contains a fiber-reinforced polymer composition comprising a polymer matrix that contains a thermoplastic polymer and a plurality of long reinforcing fibers that are distributed within the polymer matrix. The polymer composition exhibits a dielectric constant of about 3.5 or less and dissipation factor of about 0.009 or less at a frequency of 2 GHz.

Abstract: A fiber-reinforced polymer composition that contains a polymer matrix, stabilizer system, and a plurality of long reinforcing fibers that are distributed within the polymer matrix is provided. The stabilizer system comprises an antioxidant, an ultraviolet light stabilizer, and a carbon material that includes carbon particles. The polymer composition defines a surface that exhibits a ?E value of from about 0.6 to about 3 after being exposed to UV light at a total exposure level of 2,500 kJ/m2 according to SAE J2527_2017092.

Abstract: An impregnation section and a method for impregnating fiber rovings with a polymer resin are disclosed. The impregnation section includes an impregnation zone and a gate passage. The impregnation zone is configured to impregnate the plurality of rovings with the resin. The gate passage is in fluid communication with the impregnation zone for flowing the resin therethrough such that the resin impinges on a surface of each of the plurality of rovings facing the gate passage and substantially uniformly coats the plurality of rovings. The method includes impinging a polymer resin onto a surface of a plurality of fiber rovings, and substantially uniformly coating the plurality of rovings with the resin. The method further includes traversing the plurality of coated rovings through an impregnation zone. Each of the plurality of rovings is under a tension of from about 5 Newtons to about 300 Newtons within the impregnation zone.

Abstract: A lineal product includes a composite pultruded substrate having a solid outer surface, and a multi-layer coating extruded directly onto the outer surface. The coating comprises a solid extruded base layer comprising a first thermoplastic material extruded onto the outer surface, the base layer having a base-layer inner surface in intimate contact with the outer surface and a base-layer outer interface. The coating further comprises a solid extruded outer layer comprising a second thermoplastic material comprising polymethyl methacrylate extruded onto the first thermoplastic material, the solid extruded outer layer having an outer-layer interface in intimate contact with the base-layer outer interface and an outer-layer outer surface, wherein the intimate contact between the base-layer outer interface and the outer-layer interface forms a solid interface between the base layer and the outer layer. The solid extruded outer layer has a hardness of at least 1H pencil hardness.

Abstract: A lineal product includes a substrate having an outer surface, a thermoplastic base layer applied to the outer surface, and a second thermoplastic layer applied over at least a portion of the base layer, the second layer having a hardness of at least 1 H pencil hardness.

Abstract: An impregnation section and a method for impregnating fiber rovings with a polymer resin are disclosed. The impregnation section includes an impregnation zone and a gate passage. The impregnation zone is configured to impregnate the plurality of rovings with the resin. The gate passage is in fluid communication with the impregnation zone for flowing the resin therethrough such that the resin impinges on a surface of each of the plurality of rovings facing the gate passage and substantially uniformly coats the plurality of rovings. The method includes impinging a polymer resin onto a surface of a plurality of fiber rovings, and substantially uniformly coating the plurality of rovings with the resin. The method further includes traversing the plurality of coated rovings through an impregnation zone. Each of the plurality of rovings is under a tension of from about 5 Newtons to about 300 Newtons within the impregnation zone.

Abstract: A fiber-reinforced polymer composition that comprises a polymer matrix that contains a propylene polymer is provided. The polymer matrix constitutes from about 20 wt. % to about 90 wt. % of the composition, and the composition further comprises a plurality of long reinforcing fibers that are distributed within the polymer matrix, wherein the fibers constitute from about 10 wt. % to about 60 wt. % of the composition. Further, the composition also comprises a stabilizer system comprising a sterically hindered phenol antioxidant, phosphite antioxidant, and thioester antioxidant.

Abstract: An extruder (1) and a method for producing high-fiber volume reinforced thermoplastic resin structures (50), as well as a tape (156) having opposing resin rich portions (302) and a fiber rich portion (304) disposed therebetween and a method for impregnating at least one fiber roving (142) with a polymer resin to form a tape (156. The extruder (1) includes an impregnation die (3) having a channel (4) that applies pressurized molten thermoplastic resin to a plurality of rovings (142) drawn through the channel (4), and a die (3) faceplate (5) facing the downstream side (34) of said die (3). The faceplate (5) has a plurality of sizing holes (42) or a slot (75) arranged along a line that the resin-impregnated rovings (142) are simultaneously drawn through that remove excess resin and pultrude the resin-impregnated rovings (142) into rod-shaped or sheet-shaped structures.

Abstract: Insulated pipe systems or assemblies include a particulate, composite or monolithic insulating aerogel material. Techniques for installing or manufacturing such systems or assemblies are described, as are components useful in the installation or manufacture processes.

Abstract: A die and method for impregnating at least one fiber roving with a polymer resin are disclosed. The die includes an impregnation section. The impregnation section includes an impregnation zone configured to impregnate the roving with the resin. The impregnation zone includes a plurality of contact surfaces. At least one of the plurality of contact surfaces is configured such that a normal force of the roving is less than or equal to a lift force of the resin at an impregnation location on the contact surface during impregnation of the roving with the resin by the contact surface.

Abstract: A die and method for impregnating at least one fiber roving with a polymer resin are disclosed. In one embodiment, the die includes an impregnation section including an impregnation zone configured to impregnate the roving with the resin, the impregnation zone including a plurality of contact surfaces. The die further includes a perturbation positioned on at least one of the plurality of contact surfaces, the perturbation configured to interact with the roving. In one embodiment, the method includes coating a fiber roving with a polymer resin. The method further includes traversing the coated roving through an impregnation zone to impregnate the roving with the resin. The impregnation zone includes a plurality of contact surfaces. The method further includes interacting the coated roving with a perturbation positioned on at least one of the plurality of contact surfaces.

Abstract: A lineal product includes a substrate having an outer surface, a thermoplastic base layer applied to the outer surface, and a second thermoplastic layer applied over at least a portion of the base layer, the second layer having a hardness of at least 1 H pencil hardness.