申请人:MINNESOTA MINING AND MANUFACTURING COMPANY
公开号:EP0100147A2
公开(公告)日:1984-02-08
A constrained-layer construction comprising a stiff layer or substrate and a layer of a viscoelastic polymer which is the reaction product of a) 25 to 75 weight percent of an acryloyl or methacryloyl derivative of at least one oligomer, said oligomer having a glass transition temperature of less than 25 °C and a molecular weight per oligomer of 600 t0 20,000, and b) 75 to 25 weight percent of a copolymerizable monomer whose homopolymer has a glass transition temperature of at least 50 °C, the copolymer being suitable for damping vibrations at relatively high temperatures, e.g., 50-150 °C, is disclosed. Also included is a process for damping vibrations in component parts of devices used in automotive, aerospace, and computer industries.
一种约束层结构,包括一层硬质层或基底和一层粘弹性聚合物,粘弹性聚合物是 a) 至少一种低聚物的丙烯酰基或甲基丙烯酰基衍生物的 25 至 75 重量百分比的反应产物、所述低聚物的玻璃化转变温度低于 25 °C,每个低聚物的分子量为 600 至 20,000 ;以及 b) 75 至 25 重量百分比的可共聚单体,其均聚物的玻璃化转变温度至少为 50 °C,共聚物适用于在相对较高的温度下阻尼振动,例如......。g.,50-150 °C。此外,还包括一种用于汽车、航空航天和计算机工业设备部件的减振工艺。