A method for purifying reclaimed polyethylene, such as polyethylene reclaimed from post-consumer use or post-industrial use, is disclosed. The method involves obtaining the reclaimed polyethylene and contacting it at an elevated temperature and pressure with a fluid solvent to produce an extracted reclaimed polyethylene. The extracted reclaimed polyethylene is dissolved in a solvent at an elevated temperature and pressure to produce a polyethylene solution, which is purified at an elevated temperature and pressure by contacting the polyethylene solution with solid media to produce a purer polyethylene solution. A purer polyethylene is then separated from the purer polyethylene solution.

An asphalt paving mixture comprising aggregate; liquid asphalt; recycled asphalt material in an amount greater than 10% by weight of said mixture; and an amount from about 0.5% to about 20%, by weight of said liquid asphalt of a recycled asphalt pavement rejuvenating additive, said additive comprising a mixture of amine and glycol is used to form pavement. Incorporation of the recycled asphalt pavement rejuvenating additive permits higher amounts of recycled asphalt material in the mixture to be used to form pavement.

An asphalt paving mixture comprising aggregate; liquid asphalt; recycled asphalt material in an amount greater than 10% by weight of said mixture; and an amount from about 0.5% to about 20%, by weight of said liquid asphalt of a recycled asphalt pavement rejuvenating additive, said additive comprising a mixture of amine and glycol is used to form pavement. Incorporation of the recycled asphalt pavement rejuvenating additive permits higher amounts of recycled asphalt material in the mixture to be used to form pavement.

A method is disclosed for recycling broad goods material into a flaked feed material. The broad goods material includes reinforcement fibers and thermoplastic material. The recycling method includes applying heat and pressure to impregnate the reinforcement fibers at a filament level with the thermoplastic material to form an impregnated fiber material. The method also includes cooling the impregnated fiber material, and cutting the cooled impregnated fiber material into flakes to produce the flaked feed material.

Polyhexahydrotriazine (PHT) and polyhemiaminal (PHA) materials form highly cross-linked polymers which can be used as binder resins in composite materials. A filler element functionalized with a primary amine group can be covalently bonded to the PHA/PHT polymer resins. Example filler elements include, without limitation, carbon nanotubes, silica materials, carbon and glass fibers, and nanoparticles. Filler materials are incorporated into polymeric materials to improve the mechanical strength or other characteristics of the polymeric material for various applications. Typical composite materials use thermosetting materials that, once set, are intractable. PHT and PHA materials can be reverted to starting materials by exposure to acids. Thus, composite components formed using these materials are recyclable.

Crumb rubber obtained from recycled tires is subjected to an interlinked substitution process. The process utilizes a reactive component that interferes with sulfur bonds. The resulting treated rubber exhibits properties similar to those of the virgin composite rubber structure prior to being granulated, and is suitable for use in fabricating new tires, engineered rubber articles, and asphalt rubber for use in waterproofing and paving applications.

Crumb rubber obtained from recycled tires is subjected to an interlinked substitution process. The process utilizes a reactive component that interferes with sulfur bonds. The resulting treated rubber exhibits properties similar to those of the virgin composite rubber structure prior to being granulated, and is suitable for use in fabricating new tires, engineered rubber articles, and asphalt rubber for use in waterproofing and paving applications.

Polyhexahydrotriazine (PHT) and polyhemiaminal (PHA) materials form highly cross-linked polymers which can be used as binder resins in composite materials. A filler element functionalized with a primary amine group can be covalently bonded to the PHA/PHT polymer resins. Example filler elements include, without limitation, carbon nanotubes, silica materials, carbon and glass fibers, and nanoparticles. Filler materials are incorporated into polymeric materials to improve the mechanical strength or other characteristics of the polymeric material for various applications. Typical composite materials use thermosetting materials that, once set, are intractable. PHT and PHA materials can be reverted to starting materials by exposure to acids. Thus, composite components formed using these materials are recyclable.

Polyhexahydrotriazine (PHT) and polyhemiaminal (PHA) materials form highly cross-linked polymers which can be used as binder resins in composite materials. A filler element functionalized with a primary amine group can be covalently bonded to the PHA/PHT polymer resins. Example filler elements include, without limitation, carbon nanotubes, silica materials, carbon and glass fibers, and nanoparticles. Filler materials are incorporated into polymeric materials to improve the mechanical strength or other characteristics of the polymeric material for various applications. Typical composite materials use thermosetting materials that, once set, are intractable. PHT and PHA materials can be reverted to starting materials by exposure to acids. Thus, composite components formed using these materials are recyclable.

A method is disclosed for recycling broad goods material into a flaked feed material. The broad goods material includes reinforcement fibers and thermoplastic material. The recycling method includes applying heat and pressure to impregnate the reinforcement fibers at a filament level with the thermoplastic material to form an impregnated fiber material. The method also includes cooling the impregnated fiber material, and cutting the cooled impregnated fiber material into flakes to produce the flaked feed material.