Development of New Flooring Adhesives with Noise and Vibration Damping

本研究旨在从粘接改善的角度探讨地板减噪减振的解决方法。程序如下：合成在宽温度或频率范围内具有阻尼的聚合物；应用于减噪、减振胶粘剂。在第一年，我们知道可以通过动力进料、IPN和共混方法合成在宽温度范围内具有弛豫的聚合物，这是由各种表征决定的。第二年，对上述聚合物进行了自由分子设计，得到了IPN、交联聚合物、乳液聚合物和溶剂溶性聚合物，这些聚合物不仅在室温下，而且在其他温度范围内都有广泛的温度转变。将上述合成的聚合物应用于木材/胶粘剂/木材复合材料中，利用改进的流变振动动态力学分析仪进行三点弯曲，以评价其阻尼性能。以环氧树脂（Epon 871）和丙烯酸酯（甲基丙烯酸丁酯）制成的IPN为例，复合夹层体系在70℃温度范围内具有较高的阻尼系数，并保持稳定的抗弯强度。上述结果表明，采用高阻尼高分子材料可以降低楼板的噪声和振动阻尼。

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.