| Project/Area Number |
06556028
|
|---|
| Research Category |
Grant-in-Aid for Developmental Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
林産学
|
|---|
| Research Institution | The University of Tokyo |
|---|
Principal Investigator |
TAKEMURA Akio The University of Tokyo, Faculty of Agriculture, Assistant Professor, 農学部, 助手 (50183455)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
HATANO Yasunori Forestry and Forest Products Research Institute, Senior Researcher, 森林総合研究所, 主任研究員
KAJIYAMA Mikio The University of Tokyo, Faculty of Agriculture, Assistant Professor, 農学部, 助手 (40191978)
ONO Hirokuni The University of Tokyo, Faculty of Agriculture, Associate Professor, 農学部, 助教授 (30261960)
MIZUMACHI Hiroshi The University of Tokyo, Faculty of Agriculture, Professor, 農学部, 教授 (40022165)
秦野 泰典 農水省, 森林総合研究所, 主任研究員
|
|---|
| Project Period (FY) |
1994 – 1995
|
| Project Status |
Completed (Fiscal Year 1995)
|
| Budget Amount *help |
¥12,300,000 (Direct Cost: ¥12,300,000)
Fiscal Year 1995: ¥7,200,000 (Direct Cost: ¥7,200,000)
Fiscal Year 1994: ¥5,100,000 (Direct Cost: ¥5,100,000)
|
|---|
| Keywords | Power Feed / IPN / Damping / Broad Transition |
|---|
| Research Abstract |
The purpose of this work is to search the solution of noise damping and vibration of flooring from the standpoint of adhesive improvement. The procedure is as follows ; synthesize polymers having damping in a wide range of temperatures or frequencies ; applying them as noise damping and vibration damping adhesives.
In the first year, it was known that synthesis of polymers having relaxation over a wide range of temperatures was possible through power feed, IPN and blending method, which was determined by various characterizations.
In the second year, the above polymers were freely molecular designed to result in IPN,crosslinked polymer, emulsion polymer and solvent-soluble polymer, which have broad transition over a wide temperature range at not only room temperature but also other temperature range. The above synthesized polymer were applied to wood/adhesive/wood composite to evaluate the damping properties, tan delta in this case, by three point bending using modified rheovibron dynamic mechanical analyzer. As an example, in the case of using IPN made from epoxy resin (Epon 871) and acrylate (butyl methacrylate), the composite sandwich system showed a relatively high damping coefficient over 70ﾟC temperature range maintaining stable bending strength.
The above results indicate that noise and vibration damping of floor can be lowered using high damping polymeric materials.
|
