Materials and methods for mitigating passive intermodulation. A membrane for reducing passive intermodulation includes a first polymeric layer, a second polymeric layer, and a continuous metal layer encapsulated between the first and second polymeric layers. A self-adhesive radio frequency barrier tape includes a waterproof polymeric top layer, a metal-containing layer adhered by an adhesive layer to the polymeric top layer, a pressure sensitive adhesive layer adhered to the metal-containing layer, and a release liner on a bottom surface of the pressure sensitive adhesive layer. A method of mitigating passive intermodulation includes passing a probe over an area of interest, the probe being sensitive to an intermodulation frequency of interest, and identifying a suspected source of passive intermodulation when the amplitude of the probe output exceeds a threshold at the frequency of interest. The method further includes covering the suspected passive intermodulation source with a radio frequency barrier material.

Various embodiments disclosed relate to a composite shingle. The composite shingle includes a particle layer and a polyketone layer proximate to the particle layer.

Various embodiments disclosed relate to a composite shingle. The composite shingle includes a particle layer and a polyketone layer proximate to the particle layer.

A pavement repair system utilizes solid phase auto regenerative cohesion and homogenization by liquid asphalt oligopolymerization technologies. The system is suitable for use in repairing asphalt pavement, including pavement exhibiting a high degree of deterioration (as manifested in the presence of potholes, cracks, ruts, or the like) as well as pavement that has been subject to previous repair and may comprise a substantial amount of dirt and other debris (e.g., chipped road paint or other damaged or disturbed surfacing materials). A system utilizing homogenization by liquid asphalt oligopolymerization is suitable for rejuvenating or repairing aged asphalt, thereby improving properties of the paving material.

Materials and methods for mitigating passive intermodulation. A membrane for reducing passive intermodulation includes a first polymeric layer, a second polymeric layer, and a continuous metal layer encapsulated between the first and second polymeric layers. A self-adhesive radio frequency barrier tape includes a waterproof polymeric top layer, a metal-containing layer adhered by an adhesive layer to the polymeric top layer, a pressure sensitive adhesive layer adhered to the metal-containing layer, and a release liner on a bottom surface of the pressure sensitive adhesive layer. A method of mitigating passive intermodulation includes passing a probe over an area of interest, the probe being sensitive to an intermodulation frequency of interest, and identifying a suspected source of passive intermodulation when the amplitude of the probe output exceeds a threshold at the frequency of interest. The method further includes covering the suspected passive intermodulation source with a radio frequency barrier material.

Oil-enhanced polymer modified asphalt adhesive compositions, membrane materials including the oil-enhanced polymer modified asphalt adhesive composition, and methods for making are provided. The oil-enhanced polymer modified asphalt adhesive compositions have improved elongation, recovery, heat resistance, and cold adhesion and may include a polymer modified asphalt and an oil or oil derivative additive. The polymer modified asphalt may include an elastomeric copolymer. The oil or oil derivative additive may include one or more of vegetable oils, nut oils, and seed oils. A membrane including the oil-enhance polymer modified asphalt is also provided. A multi-layered roofing membrane is also provided.

Oil-enhanced polymer modified asphalt adhesive compositions, membrane materials including the oil-enhanced polymer modified asphalt adhesive composition, and methods for making are provided. The oil-enhanced polymer modified asphalt adhesive compositions have improved elongation, recovery, heat resistance, and cold adhesion and may include a polymer modified asphalt and an oil or oil derivative additive. The polymer modified asphalt may include an elastomeric copolymer. The oil or oil derivative additive may include one or more of vegetable oils, nut oils, and seed oils. A membrane including the oil-enhance polymer modified asphalt is also provided. A multi-layered roofing membrane is also provided.

Wax-modified asphalt can be employed in peel-and-stick sheets. In some embodiments, the method includes adding a wax to an asphalt blend. The addition of wax can result in an asphalt having lower viscosity, higher softening point, improved compatibility, and/or stronger adhesion properties. These changes can be achieved in addition to maintaining both low and high temperature stability of the asphalt adhesive. In some embodiments, the wax is made from a recycled plastic.

Wax-modified asphalt can be employed in peel-and-stick sheets. In some embodiments, the method includes adding a wax to an asphalt blend. The addition of wax can result in an asphalt having lower viscosity, higher softening point, improved compatibility, and/or stronger adhesion properties. These changes can be achieved in addition to maintaining both low and high temperature stability of the asphalt adhesive. In some embodiments, the wax is made from a recycled plastic.

Various embodiments disclosed relate to a composite shingle. The composite shingle includes a particle layer and a polyketone layer proximate to the particle layer.