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    • 5. 发明授权
    • Method for damping noise, vibration and harshness of a substrate
    • 抑制衬底噪声,振动和粗糙度的方法
    • US06291019B1
    • 2001-09-18
    • US09335115
    • 1999-06-17
    • Ralph J. LockeDaniel W. Irvine
    • Ralph J. LockeDaniel W. Irvine
    • B05D100
    • C08J7/047C08G18/6685C08G2350/00C08J2475/00C09D175/02
    • A method for damping vibration of a substrate comprises the step of applying a liquid material onto the substrate in an ambient environment, wherein, after application to the substrate, the material cures substantially instantaneously in the ambient environment. The damping composition usable therefor comprises a resin component and an isocyanate component. The resin component includes a polymer(s) for imparting tensile strength, hardness and flexibility; an optional chain extender(s) for imparting tensile strength, weatherability, flexibility, adhesion to specific substrates, and hardness; and an optional filler for imparting hardness, flexibility, and specific noise, vibration and harshness blocking characteristics to the after-application, cured surface. The isocyanate component of the composition includes an isocyanate quasi-prepolymer(s) based on a uretonimine modified MDI and a high molecular weight polyether polyol having an isocyanate equivalent content of 15.8 % and a 2,4′-isomer content of less than about 15 %; and an optional plasticizer(s) for imparting flexibility.
    • 一种用于抑制衬底振动的方法包括在周围环境中将液体材料施加到衬底上的步骤,其中在施加到衬底之后,材料在周围环境中基本上瞬间固化。 可用于其的阻尼组合物包括树脂组分和异氰酸酯组分。 树脂组分包括用于赋予拉伸强度,硬度和柔韧性的聚合物; 用于赋予拉伸强度,耐候性,柔韧性,对特定基材的粘附性和硬度的任选的扩链剂; 以及用于赋予后处理固化表面的硬度,柔性和特定噪声,振动和粗糙度阻塞特性的可选填料。 组合物的异氰酸酯组分包括基于脲酮亚胺改性MDI的异氰酸酯预预聚物和异氰酸酯当量含量为15.8%,2,4'-异构体含量小于约15的高分子量聚醚多元醇 %; 和用于赋予柔性的任选的增塑剂。