Metal tubing coated with multiple layers of polymeric materials
    7.
    发明授权
    Metal tubing coated with multiple layers of polymeric materials 有权
    涂有多层聚合材料的金属管

    公开(公告)号:US06689440B2

    公开(公告)日:2004-02-10

    申请号:US10153416

    申请日:2002-05-22

    IPC分类号: B32B108

    摘要: A coated metal tubing arrangement comprises a metal tube. An inner layer of a first polymeric material is bonded to the tube to provide corrosion protection. The first polymeric material has a high crystallinity, a dampening factor of less than 0.05, and a flexural modulus of at least 100 MPa. An outer layer of a second polymeric material is extruded around the inner layer to absorb impact energies and to eliminate mechanical vibrations and acoustic noises. The second polymeric material has a dampening factor of at least 0.05 and a flexural modulus of less than 50 Mpa. The second polymeric material is a multi-phase polymer having at least one polymer component with a glass-transition temperature below room temperature.

    摘要翻译: 涂覆的金属管装置包括金属管。 第一聚合物材料的内层与管接合以提供腐蚀保护。 第一聚合物材料具有高结晶度,小于0.05的阻尼系数和至少100MPa的弯曲模量。 第二聚合材料的外层围绕内层挤出以吸收冲击能并消除机械振动和声音噪声。 第二聚合物材料的阻尼系数至少为0.05,挠曲模量小于50Mpa。 第二聚合物材料是具有玻璃化转变温度低于室温的至少一种聚合物组分的多相聚合物。

    Multi-layer tubing assembly for fluid and vapor handling systems
    10.
    发明授权
    Multi-layer tubing assembly for fluid and vapor handling systems 失效
    用于流体和蒸汽处理系统的多层管道组件

    公开(公告)号:US6012496A

    公开(公告)日:2000-01-11

    申请号:US314810

    申请日:1999-05-19

    摘要: A multi-layer tubing for use in fluid transport applications. The tubing is suitable for conveying fluids containing hydrocarbons. The tubing comprising an extrudable adhesive layer coextruded around a permeation-resistant layer of fluoropolymer and a layer of polymer chemically dissimilar from fluoropolymer coextruded around the adhesive . The adhesive layer is formed of a polymer blend or alloy having a multi-phase morphology wherein one phase is miscible with the fluoropolymer for forming the inner permeation-resistant layer and another phase is miscible with the polymer chemically dissimilar from fluoropolymer.To achieve sufficient bonding, the adhesive layer comprises at least 25% volume fraction of the first phase which is miscible with the fluoropolymer for forming inner permeation-resistant layer and at least 25% volume fraction of the second phase which is miscible with the polymer chemically dissimilar from fluoropolymer.Furthermore, the adhesive layer of polymer blends or alloys having a multi-phase morphology can be modified by adding compatibilizers and rheology modifiers to improve adhesion strength and to allow the material for forming the adhesive layer to obtain proper viscosity and elasticity for extrusion.

    摘要翻译: 用于流体输送应用的多层管。 管道适用于输送含烃的流体。 管道包括可挤出的粘合剂层,其共挤出氟聚合物的耐渗透层,并且与粘合剂共挤出的与氟聚合物化学不相似的聚合物层。 粘合剂层由具有多相形态的聚合物共混物或合金形成,其中一相可与含氟聚合物混溶以形成内部耐渗透层,另一相可与化合物与氟聚合物化学不相混溶。 为了实现足够的粘合,粘合剂层包含与用于形成内部耐渗透层的含氟聚合物混溶的第一相的至少25体积%的分数,以及可与化合物混溶的第二相的至少25%的体积分数 不同于含氟聚合物。 此外,具有多相形态的聚合物共混物或合金的粘合剂层可以通过加入增容剂和流变改性剂来改进粘合强度并允许形成粘合剂层的材料获得适当的粘度和挤出弹性来进行改性。