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High-performance thermoplastic elastomer with exceptional dynamic fatigue resistance.
Excellent oil, fuel, and chemical resistance at elevated temperatures.
Outstanding mechanical properties retention across a wide service temperature range (–40 °C to 150 °C).
Good processability via injection molding, extrusion, and blow molding without pre-drying.
Black color formulation with consistent UV stability and low extractables for demanding applications.
Automotive under-hood components including turbocharger hoses and charge air ducts.
Fuel system components such as fuel rails, connectors, and vapor recovery lines.
Industrial fluid handling systems including hydraulic hose covers and diaphragms.
Powertrain and transmission grommets requiring vibration damping and thermal resilience.
Medical tubing and connectors where biocompatibility support and sterilization resistance are required.
| Chemical Type | Thermoplastic Polyester Elastomer (TPEE) |
| Product Form | Pellets |
| Appearance | Jet-black, free-flowing pellets |
| Primary Applications | Dynamic sealing, fluid conveyance, high-temperature flexible parts |
| Key Features | Oil/fuel resistance, thermal stability, fatigue endurance, melt-processable |
| Benefits | Extended service life in aggressive environments, design flexibility, lightweight alternative to thermoset rubber |
| Processing Method | Injection molding, extrusion, blow molding |
| Standards Compliance | Meets ASTM D4000 classification: TPEE-TPC-1000 |
Q1: What is the primary functional role of Hytrel DYM500BK in polymer blends?
A: Hytrel DYM500BK is a black-pigmented thermoplastic elastomer based on polyether-ester (TPEE), designed primarily as a high-performance impact modifier and melt-processable elastomeric phase for engineering thermoplastics such as polyesters, polyamides, and polycarbonates. It enhances toughness, flexibility, and low-temperature performance without significantly compromising stiffness or thermal stability.
Q2: Is Hytrel DYM500BK suitable for applications requiring repeated flexing or dynamic mechanical stress?
A: Yes — as a TPEE-grade material, Hytrel DYM500BK exhibits excellent fatigue resistance, resilience, and recovery after cyclic deformation. It is commonly selected for components subjected to repeated bending, torsion, or compression, such as automotive bellows, power tool grips, and flexible connectors.
Q3: How does the black pigment in DYM500BK affect its UV stability and processing behavior?
A: The carbon-black-based pigmentation contributes to inherent UV resistance and helps protect underlying polymer matrices from photodegradation. During processing, the masterbatch formulation ensures good dispersion and thermal stability up to typical TPEE melt-processing temperatures, with no reported degradation or plate-out under standard extrusion or injection molding conditions.
Q4: Can Hytrel DYM500BK be used in direct contact with food or potable water systems?
A: Hytrel DYM500BK is not certified for food-contact or potable water applications. While the base Hytrel resin may meet certain regulatory requirements in specific grades, DYM500BK contains proprietary additives and pigments intended for industrial and technical use only. Customers requiring compliance for food, medical, or drinking water must consult DuPont for formally evaluated and certified alternatives.
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E-mail: wangxingqiang@ericwchem.com
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