杜邦Hytrel系列TPEE简介；
TPEE（热塑性聚酯弹性体）是含有聚酯硬段和聚醚软段的嵌段共聚物。其中聚醚软段和未结晶的聚酯形成无定形相聚酯硬段部分结晶形成结晶微区，起物理交联点的作用。TPEE具有橡胶的弹性和工程塑料的强度；软段赋予它弹性，使它象橡胶；硬段赋予它加工性能，使它象塑料；与橡胶相比，它具有更好的加工性能和更长的使用寿命；与工程料相比，同样具有强度高的特点，而柔韧性和动态力学性能更好。
TPEE Hytrel 6386同系列通用型号
Hytrel 3078 A 30 nom. Shore D, non discoloring stabilizer, plasticiser free specialty resin for conventional thermoplastic techniques like molding, melt casting and extrusion; outstanding impact resistance down to -40°C.
Hytrel 4053FG A low modulus high performance thermoplastic elastomer with food compliance specificity. It is suitable for extrusion and injection molding processes.
Hytrel 4056 A 40 nom. Shore D, containing non-discoloring stabilizer, low melting, plasticiser free, high performance resin for extrusion and compounding; with high impact resistance down to -40°C as well as excellent mechanical properties.
Hytrel 4068 A 40 nom. Shore D, containing non-discoloring stabilizer, plasticiser free, high performance resin for injection molding and extrusion; with outstanding impact resistance down to -40°C.
Hytrel 4068FG A high performance thermoplastic polyester elastomer with food compliance specificity.
Hytrel 4069 A 40 nom. Shore D, containing non-discoloring stabilizer, plasticiser free, high performance resin for injection molding and extrusion; with outstanding impact resistance down to -40°C as well as good mechanical properties up to 110°C.
Hytrel 4556 A 45 nom. Shore D, containing non-discoloring stabilizer, plasticiser free, high performance resin for injection molding and extrusion; with outstanding impact resistance down to -40°C and consistent mechanical properties between -40°C and 110°C.
Hytrel 5526 A 55 nom. Shore D, containing non-discoloring stabilizer, plasticiser free, high performance resin for injection molding; high flow, good impact resistance down to -40°C as well as mechanical properties up to 120°C.
Hytrel 5555HS A 55 nom. Shore D, heat stabilised, plasticiser free specialty resin for injection molding and extrusion; good impact resistance down to -40°C as well as mechanical properties up to 135°C. Contains a discoloring antioxidant. Not suited for light-colored finished products.
Hytrel 5556 A medium modulus Hytrel? grade with nominal durometer hardness of 55D. It contains non-discoloring stabilizer. It can be processed by many conventional thermoplastic processing techniques like injection molding and extrusion.
Hytrel 6356 A 63 nom. Shore D, containing non-discoloring stabilizer, plasticiser free, high performance resin for injection molding and extrusion; outstanding mechanical properties up to 120°C and excellent oil, hydraulic fluids and grease resistance.
Hytrel 7246 A 72 nom. Shore D, containing non-discoloring stabilizer, plasticiser free, high performance resin for injection molding and extrusion; outstanding mechanical properties up to 120°C, excellent hydrocarbon resistance and low permeability.
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