Adhesive Materials Group

Reducing weight of transportation machine is an imminent challenge relating to energy and environmental crises. As a fundamental solution, “multimaterial”, which is a composite materials combining several structural materials in adequate parts, starts receiving attention. Elemental joining technology can be categorized into fusion joining, soldering, solid-state welding, mechanical joining, and adhesive joining. While other joining technology is based on joint with the dots, adhesive bonding joint with plane surfaces. Therefore, adhesive joining can expect to enhance the stiffness of junction between component materials. Also, regardless of structural materials, such as resin, metals and ceramics, adhesive bonding can apply for variety of combination of materials. On the other hand, adhesive bonding has problems that needs to be solved, regarding productivity or durability. During the curing process, various interactions express among adhesives or between adhesive and surface, resulting in express of eventual adhesive functions. However, relationship between dynamic changes of adhesive (macro)molecules during curing and adhesive function/property remains unclear. The multimaterials science group dedicates to elucidate adhesive mechanism and interface structure of adhesion bonding, leading to figure out what is behind degradation, lifetime, and fatigues of adhesive materials. Based on this knowledge, we will develop novel structural adhesive materials and process. In particular, the following crucial issues on multilateral adhesive joint are tacked by group as a whole.

Specialized Research Field

1. Development of groundbreaking multimaterials adhesives and its joint technology.
2. Structural analyses of multimaterials joint interface.
3. Rheological elucidation on forming interfaces between different materials.

Group Leader

"Masanobu Naito" Image

Masanobu Naito

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Adhesive Materials Group
1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, JAPAN
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National Institute for Materials Science (NIMS)
1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, JAPAN