Nano-Engineered Permanent Magnet Materials

65507 Adhesive systems are needed for the assembly of detectors for high-energy physics applications, especially an adhesive that cures upon the application of an external stimulation, such as UV light. However, the end use of these detectors requires extensive shielding to protect the detectors from impinging stray light that might interfere with the small responses generated during subsequent experiments. This shielding makes standard UV-curing adhesive systems unacceptable for this application. This project will develop an adhesive system that can be cured effectively by x-ray irradiation, which is capable of penetrating into the detector structure and initiating the cure of the adhesive system. The system that will provide the desired bonding strength with minimum x-ray intensity, in order to ensure adequate penetration to guarantee full cure in the system. Phase I will select adhesive components (including polymers, monomers, photoinitiators, polymerization accelerators or inhibitors, and fillers) to achieve the desired bonding properties and optical properties for the assembly of photodetectors used in high-energy physics experimentation. At least three acrylate and three epoxy formulations will be tested and optimized. At least one optimized system will be demonstrated and the penetration depth will be determined. Commercial Applications And Other Benefits as described by awardee: There are many cases in which conventional adhesive systems, such as UV-initiated polymerization, are not applicable. The x-ray curing adhesive system should be compatible with radiation processing methods currently under development in the aerospace industry where large, complex parts are frequently bonded, and could lead to significant cost reduction in composite airframe assembly and repair