TPEE HTR8068

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DuPont™ Hytrel® HTR8068
 
THERMOPLASTIC POLYESTER ELASTOMER
 
Product Information
 
Common features of Hytrel® thermoplastic polyester elastomer include mechanical and physical properties such as exceptional toughness and resilience, high resistance to creep, impact and flex fatigue, flexibility at low temperatures and good retention of properties at elevated temperatures. In addition, it resists many industrial chemicals, oils and solvents. Special grades include heat stabilised, flame retardant, food contact compliant, blow molding and extrusion grades. Concentrates offered include black pigments, UV protection additives, heat stabilisers, and flame retardants.
 
Hytrel® thermoplastic polyester elastomer is plasticiser free.
 
The good melt stability of Hytrel® thermoplastic polyester elastomer normally enables the recycling of properly handled production waste. If recycling is not possible, DuPont recommends, as the preferred option, incineration with energy recovery (-24 kJ/g of base polymer) in appropriately equipped installations.
 
For disposal, local regulations have to be observed.
 
Hytrel® thermoplastic polyester elastomer typically is used in demanding applications in the automotive, fluid power, electrical/electronic, consumer goods, appliance and power tool, sporting goods, furniture, industrial and off-road transportation/equipment industry.
 
Hytrel® HTR8068 is a medium modulus flame retardant and antidrip Hytrel® resin that meets the requirement of UL94 V-0. It has nominal durometer hardness of 44D.
 
 
General information Value Unit Test Standard
Resin Identification TPC-ET-FR(17) - ISO 1043
Part Marking Code >TPC-ET-FR(17)< - ISO 11469
Rheological properties Value Unit Test Standard
Melt volume-flow rate 3.6 cm³/10min ISO 1133
Temperature 190 °C ISO 1133
Load 2.16 kg ISO 1133
Melt mass-flow rate 4 g/10min ISO 1133
Melt mass-flow rate, Temperature 190 °C -
Melt mass-flow rate, Load 2.16 kg -
Moulding shrinkage, parallel 1.1 % ISO 294-4, 2577
Moulding shrinkage, normal 1.1 % ISO 294-4, 2577
Mechanical properties (TPE) Value Unit Test Standard
Tensile Modulus 140 MPa ISO 527-1/-2
Stress at 10% strain 5.9 MPa ISO 527-1/-2
Stress at 50% strain 7.3 MPa ISO 527-1/-2
Stress at break 13 MPa ISO 527-1/-2
Strain at break >300 % ISO 527-1/-2
Nominal strain at break 340 % ISO 527-1/-2
Tear strength, parallel 70 kN/m ISO 34-1
Tear strength, normal 70 kN/m ISO 34-1
Shore D hardness, max 44 - ISO 868
Shore D hardness, 15s 38 - ISO 868
Mechanical properties Value Unit Test Standard
Flexural Modulus 155 MPa ISO 178
Charpy notched impact strength     ISO 179/1eA
23°C 40 kJ/m²  
-30°C 7 kJ/m²  
-40°C 5 kJ/m²  
Brittleness temperature -48 °C ISO 974
Thermal properties Value Unit Test Standard
Melting temperature, 10°C/min 170 °C ISO 11357-1/-3
Temp. of deflection under load     ISO 75-1/-2
1.8 MPa 41 °C  
0.45 MPa 46 °C  

Vicat softening temperature, 50°C/h, 10N 107 °C ISO 306
Coeff. of linear therm. expansion, parallel 150 E-6/K ISO 11359-1/-2
Coeff. of linear therm. expansion, normal 170 E-6/K ISO 11359-1/-2
Eff. thermal diffusivity 5.44E-8 m²/s -
RTI, electrical, 1.5mm 50 °C UL 746B
RTI, impact, 1.5mm 50 °C UL 746B
RTI, strength, 1.5mm 50 °C UL 746B
Flammability Value Unit Test Standard
Burning Behav. at 1.5mm nom. thickn. V-0 class IEC 60695-11-10
Thickness tested 1.5 mm IEC 60695-11-10
UL recognition UL - -
Oxygen index 26 % ISO 4589-1/-2
Electrical properties Value Unit Test Standard
CTI, 23°C, 3.0mm 425 PLC UL 746A
High Amperage Arc Ignition Resistance, 1.5 mm 200 arcs UL 746A
Other properties Value Unit Test Standard
Density 1430 kg/m³ ISO 1183
Density of melt 1300 kg/m³ -
Water Absorption, Immersion 24h 1.9 % ASTM D 570
 
Characteristics      
  Injection Moulding Sheet Extrusion Casting
Processing Film Extrusion Other Extrusion Thermoforming
  Profile Extrusion Coatable  
Delivery form Pellets    
Special characteristics Light stabilised or stable    
to light    
     
Regional Availability North America Asia Pacific Near East/Africa
Europe South and Central America Global
 
 
Processing Texts
 
Injection molding
 
PREPROCESSING
 
Drying recommended = Yes
 
Drying temperature = 80°C
 
Drying time, dehumidified dryer = 2-3 h
 
Processing moisture content = <0.08 %
 
PROCESSING
 
Melt temperature optimum = 200°C
 
Mould temperature optimum = 40°C
 
Mould temperature range = 30-40°C
 
Profile extrusion
 
PREPROCESSING
 
Drying recommended = Yes
 
Drying temperature = 80°C
 
Drying time, dehumidified dryer = 2-3 h
 
Processing moisture content = <0.06 %
 
PROCESSING
 
Melt temperature optimum = 195°C

Chemical Media Resistance
 
Acids
 
Acetic Acid (5% by mass) (23°C)
 
Citric Acid solution (10% by mass) (23°C)
 
Lactic Acid (10% by mass) (23°C)

Hydrochloric Acid (36% by mass) (23°C)
 
Nitric Acid (40% by mass) (23°C)
 
Sulfuric Acid (38% by mass) (23°C)
 
Sulfuric Acid (5% by mass) (23°C)
 
Chromic Acid solution (40% by mass) (23°C)
 
Bases
 
Sodium Hydroxide solution (35% by mass) (23°C)
 
Sodium Hydroxide solution (1% by mass) (23°C)
 
Ammonium Hydroxide solution (10% by mass) (23°C)
 
Alcohols
 
Isopropyl alcohol (23°C)
 
Methanol (23°C)
 
Ethanol (23°C)
 
Hydrocarbons
 
n-Hexane (23°C) Toluene (23°C) iso-Octane (23°C)
 
Ketones
 
Acetone (23°C)
 
Ethers
 
Diethyl ether (23°C)
 
Mineral oils
 
SAE 10W40 multigrade motor oil (23°C)
 
SAE 10W40 multigrade motor oil (130°C)
 
SAE 80/90 hypoid-gear oil (130°C)
 
Insulating Oil (23°C)
 
Standard Fuels

ISO 1817 Liquid 1 - E5 (60°C)
 
ISO 1817 Liquid 2 - M15E4 (60°C)
 
ISO 1817 Liquid 3 - M3E7 (60°C)
 
ISO 1817 Liquid 4 - M15 (60°C)
 
Standard fuel without alcohol (pref. ISO 1817 Liquid C) (23°C)
 
Standard fuel with alcohol (pref. ISO 1817 Liquid 4) (23°C)

Diesel fuel (pref. ISO 1817 Liquid F) (23°C)
 
Diesel fuel (pref. ISO 1817 Liquid F) (90°C)
 
Diesel fuel (pref. ISO 1817 Liquid F) (>90°C)
 
Salt solutions
 
Sodium Chloride solution (10% by mass) (23°C)
 
Sodium Hypochlorite solution (10% by mass) (23°C)
 
Sodium Carbonate solution (20% by mass) (23°C)
 
Sodium Carbonate solution (2% by mass) (23°C)
 
Zinc Chloride solution (50% by mass) (23°C)
 
Other
 
Ethyl Acetate (23°C) Hydrogen peroxide (23°C) DOT No. 4 Brake fluid (130°C)

Ethylene Glycol (50% by mass) in water (108°C)
 
1% nonylphenoxy-polyethyleneoxy ethanol in water (23°C)
 
50% Oleic acid + 50% Olive Oil (23°C) Water (23°C)
 
Water (90°C)
 
Phenol solution (5% by mass) (23°C)
 
Symbols used:
 
possibly resistant
 
Defined as: Supplier has sufficient indication that contact with chemical can be potentially accepted under the intended use conditions and expected service life. Criteria for assessment have to be indicated (e.g. surface aspect, volume change, property change).
 
not recommended - see explanation
 
Defined as: Not recommended for general use. However, short-term exposure under certain restricted conditions could be acceptable (e.g. fast cleaning with thorough rinsing, spills, wiping, vapor exposure).
 
 
Contact DuPont for Material Safety Data Sheet, general guides and/or additional information about ventilation, handling, purging, drying, etc. ISO Mechanical properties measured at 4.0mm (Hytrel® measured at 2 mm), IEC Electrical properties measured at 2.0mm, all ASTM properties measured at 3.2mm, and test temperatures are 23°C unless otherwise stated.
 
The information set forth herein is furnished free of charge and is based on technical data that DuPont believes to be reliable and falls within the normal range of properties. It is intended for use by persons having technical skill, at their own discretion and risk. This data should not be used to establish specification limits nor used alone as the basis of design. Handling precaution information is given with the understanding that those using it will satisfy themselves that their particular conditions of use present no health or safety hazards. Since conditions of product use and disposal are outside our control, we make no warranties, express or implied, and assume no liability in connection with any use of this information. As with any product, evaluation under end-use conditions prior to specification is essential. Nothing herein is to be taken as a license to operate or a recommendation to infringe on patents. Caution: Do not use in medical applications involving permanent implantation in the human body. For other medical applications, discuss with your DuPont customer representative and read Medical Caution H-50103-4.
 
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