首页> 外文会议>SPE(Society of Plastics Engineers) International Polyolefins Conference 2007 vol.1 >Cyclic Olefin Copolymer - A High Performance Modifier for Conventional Polyolefins
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Cyclic Olefin Copolymer - A High Performance Modifier for Conventional Polyolefins

机译:环状烯烃共聚物-常规聚烯烃的高性能改性剂

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TOPAS~R Cyclic Olefin Copolymer (COC) is an amorphous, transparent copolymer based on cyclic olefins and linear olefins.. COCs are a relatively new class of polymers having a unique combination of properties which can be customized over a wide range during polymerization and they have good compatibility with most conventional polyolefins. COC is often used in blends with conventional polyolefins to modify key characteristics such as stiffness, HDT, and thermoformability. When blended with LLDPE at a 10% level COC can triple the modulus while maintaining a low haze, and increasing the ultimate seal strength and hot-tack strength . High glass transition temperature (Tg ) COC blends with polyethylene can help maintain modulus up to temperatures approaching the Tg of the COC.
机译:TOPAS〜R环状烯烃共聚物(COC)是基于环状烯烃和线性烯烃的无定形透明共聚物。COC是一类相对较新的聚合物,具有独特的性能组合,可以在聚合过程中广泛定制。与大多数常规聚烯烃具有良好的相容性。 COC通常与常规聚烯烃共混使用,以改善关键特性,如刚度,HDT和热成型性。当与LLDPE以10%的含量混合时,COC可使模量增加三倍,同时保持低雾度,并提高最终的密封强度和热粘强度。高玻璃化转变温度(Tg)COC与聚乙烯的共混物可帮助将模量保持在接近COC Tg的温度。

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