测试比较了国内新研和国外两种约束阻尼带的性能,结果表明:国内新研约束阻尼带剥离强度较高,但剥离后在基体上有残留胶;国外约束阻尼带损耗因子较高,阻尼功能温域较宽;随着粘贴层数的增多,国内外约束阻尼带损耗因子均增大,且最大损耗因子对应温度均向低温移动.
The constrained-layer damping tapes including the oversea and the domestic were tested and compared. The differences between the oversea and the domestic in peel strength and damping properties were discovered. The results show that the domestic constrained-layer damping tapes possess higher peel strength than that of the oversea. And the peel fracture of the domestic constrained-layer damping tape was hybrid fracture. The oversea constrained-layer damping tapes possess larger maximum loss factor and wider damping temperature range than that of the domestic tape. The loss factor of two kinds of damping tapes increases and the temperature at the maximum loss factor reduces with increasing the layers of constrained-layer damping tapes.
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