Abstract: Methods and systems are provided for cooling hot spots on a body coil assembly of an MRI system. In one embodiment, an airflow guide of a body coil assembly of an MRI system comprises a first surface that forms an air passage when the airflow guide is positioned on the body coil assembly, the air passage enclosed by the first surface and a second, outer surface of an RF coil of the body coil assembly, the airflow guide configured to channel cool air generated by a fan to the second, outer surface of the RF coil. The airflow guide may be arranged circumferentially around a portion of the RF coil at one or more ends of the RF coil. The airflow guide may be manufactured as a plurality of airflow guide segments that are glued together.

Abstract: A rubber-plastic alloy for a warm mix asphalt mixture and a method for manufacturing the same are disclosed. The rubber-plastic alloy consists of plastic, crumb rubber, cracked wax and rubber oil. The manufacturing method includes extruding the plastic, the crumb rubber, the cracked wax, and the rubber oil at suitable ratio via a single screw extruder, and pelleting via a water-cooled die-face cutter. The rubber-plastic alloy is mixed with a hot mineral material in an asphalt mixture mixer, and then liquid asphalt matrix is pumped into the mixer via an asphalt pump to provide a warm mix rubber-plastic modified asphalt mixture. The rubber-plastic alloy is applied for modifying an asphalt mixture to an effect equivalent to that achieved by a wet method.

Abstract: The present invention disclosed a rubber-plastic alloy for a warm mix asphalt mixture and a method for manufacturing the same. The warm mix rubber-plastic alloy is consisted of 5%-30% plastic, 70%-95% crumb rubber, and cracked wax and rubber oil, the summed amount of which comprises 10%-50% of the summed amount of the plastic and the crumb rubber. The manufacturing method comprises extruding the plastic, the crumb rubber, the cracked wax, and the rubber oil at suitable ratio via a single screw extruder, and pelleting via a water-cooled die-face cutter. The use comprises mixing the rubber-plastic alloy with a hot mineral material in an asphalt mixture mixer, and then liquid asphalt matrix is pumped into the mixer via an asphalt pump to provide a warm mix rubber-plastic modified asphalt mixture having excellent performance.