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    • 1. 发明申请
    • CROSSLINKABLE POLYMERIC COMPOSITIONS FOR FLEXIBLE CROSSLINKED CABLE INSULATION AND METHODS FOR MAKING FLEXIBLE CROSSLINKED CABLE INSULATION
    • 用于柔性交联电缆绝缘的可交联聚合物组合物和制备柔性交联电缆绝缘的方法
    • WO2017074707A1
    • 2017-05-04
    • PCT/US2016/056719
    • 2016-10-13
    • DOW GLOBAL TECHNOLOGIES LLC
    • CHAUDHARY, Bharat I.WICKHAM, RennishaHUGHES, Morgan M.TUBERQUIA, Juan C.
    • C08L23/04C08L23/06C08L23/08C08L23/16
    • C08L23/0815C08L23/04C08L23/06C08L23/16C08L2207/066C08L2312/00
    • Crosslinkable polymeric compositions comprising: (a) a polymer blend comprising: (1) 10 to 94 weight percent, based on the total weight of the crosslinkable polymeric composition, of an ethylene-based interpolymer having the following properties: (i) a density of 0.93 g/cm 3 or less, (ii) a melt index (I 2 ) at 190 °C of greater than 0.2 g/10 minutes, and (iii) a shear thinning ratio (V0.1/V100) at 190 °C and 10 % strain of less than 8; and (2) 5 to 90 weight percent, based on the total weight of the crosslinkable polymeric composition, of a high-pressure polyethylene; and (b) 0 to less than 40 weight percent, based on the total weight of the crosslinkable polymeric composition, of a filler, where the ethylene-based interpolymer of component (a) is not prepared in a high-pressure reactor or process. Additionally, the polymer blend has the following properties: (i) a shear thinning ratio (V0.1/V100) at 190 °C and 10 % strain of at least 5, (ii) a high-shear viscosity (V100) at 190 C and 10 % strain of less than 1,300 Pa . s, (iii) a melt strength of at least 4 centiNewtons at 190 °C, and (iv) a flexural modulus, 2% secant, of less than 25,000 psi. Such crosslinkable polymeric compositions may be employed as insulation layers in flexible power cables.
    • 可交联聚合物组合物,其包含:(a)聚合物共混物,其包含:(1)基于可交联聚合物组合物的总重量,10至94重量%的基于乙烯的共聚体,其具有以下 性质:(i)密度为0.93g / cm 3或更低,(ii)190℃下的熔体指数(I 2 /): ;大于0.2g / 10分钟的C,和(iii)在190℃和10%应变下的剪切稀释比(V0.1 / V100)小于8; 和(2)基于可交联聚合物组合物总重量的5-90重量%的高压聚乙烯; 和(b)基于可交联聚合物组合物的总重量,0至小于40重量%的填料,其中组分(a)的基于乙烯的共聚体不是在高压反应器或工艺中制备的。 此外,聚合物共混物具有以下性质:(i)在190℃和10%应变下至少5的剪切稀释率(V0.1 / V100),(ii)在100℃下的高剪切粘度(V100) (iii)在190℃下至少4厘牛顿的熔体强度,和(iv)挠曲模量,2%割线,以及(iii)190℃和10%应变小于1300Pa.s,(iii) 小于25,000psi。 这种可交联的聚合物组合物可以用作柔性电力电缆中的绝缘层。