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PermaFelx® 55

Chemical Family
Polyesters

PermaFelx® 55 is a family of thermoplastic elastomers designed in a range of durometers for maximum versatility. Performance-tested, PermaFlex delivers superior results compared to rubber, TPEs and other elastomers. As opposed to cured rubber, PermaFlex can be re-ground and re-molded many times. It processes with less waste and no sulfur pollution.

Properties

Physical Form
  • Pellets
  • Solid

Product families

Elastomers — Thermoplastic Elastomers
  • Thermoplastic Polyester Elastomers (TPE-E)

Other characteristics

Brand
PermaFelx
End Uses

Air Ducts, Constant Velocity Joint Boots, Electrical Connectors, Footwear, Knobs, Luggage, SRS Airbag, SRS Seatbelt, Tubing

Polymer Name
Copolyester Elastomer (COPE)
Processing Methods
Injection Molding
Markets
  • Automotive & Transportation
  • Consumer Goods
  • Electrical & Electronics
  • Healthcare & Pharma
  • Industrial
Application

PermaFlex®, and all its grades, is a thermoplastic elastomer, based on copolyester chemistry, also known as COPE or TPE-E. It eliminates the demarcation between rubbers and engineering plastics. It combines the strength and processing characteristics of engineering plastics with the performance of thermoset elastomers, a combination of the most desirable characteristics of rubbers and plastics. This combination provides benefits in processing and productivity for both molders and extruders. It also can be processed by blow molding or rotational techniques. As a thermoplastic, PermaFlex does not involve the high cost of vulcanization to obtain optimal properties. This polyester-based material offers a consistent performance over its entire operating temperature range, since its properties vary minimally from high to low temperature extremes.

Flame Rating
UL 94 V0
Technology
Elastomers
Characteristic
  • High temperature resistance
  • High tensile strength
  • Chemical resistant performance
  • And more...
Basic Properties

Temperature resistance; High tensile strength; Impact resistance; Wear and tear; Abrasion resistance; Resistance to weathering, oil and chemicals; High permeability resistance to fuels and oils; Flexural fatigue endurance; UV stability; Adhesion compatibility with paints, glues, plastics and metals; Creep and compression resistance; Excellent moisture vapor transmission rate; Dielectric; Good tactile and soft touch fee

Material Features
  • Abrasion Resistant
  • Chemical Resistant
  • Creep Resistant
  • Fatigue Resistant
  • Good UV Stability
  • Good Weather Stability
  • High Moisture Vapor Transmission
  • High Temperature Resistance
Chemical Resistance
  • Acetic Acid
  • Alcohols Aliphatic
  • Ammonium Hydroxide Aqueous
  • Diesel Oil
  • Ethylene Glycol
  • Hydrochloric Acid Aqueous
  • Methyl Ethyl Ketone
  • Motor Oil
Chemical Inventories
TSCA (USA)

Technical data

Table 1 of 4

5 rows
CharacteristicValueUnitMethod
Tensile Elongation at Break (Type 1 Bar -40°C)900%D 638
Tensile Strength at Break (Type 1 Bar -40°C)7000psiD 638
Tensile Strength at Break (Type 1 Bar 73°F)7000——
Dart Impact320in/lb +—
Tensile Elongation at Break (Type 1 Bar 73°F)900%—

Table 2 of 4

11 rows
CharacteristicValueUnitMethod
Specific Gravity1.24g/ccmD-792
Chemical ResistanceExcellent——
CompressionExcellent——
Cut ResistanceExcellent——
Density1.24g/cm3D 792
Hydrolytic StabilityExcellent——
Mold Shrinkage Flow Direction0.005 - 0.006in(mm)D 955
Mold Shrinkage Type 1 Bar0.127 - 0.152in(mm)—
Melt Flow Rate (240°C at 2.16 kg)50g/10 minutesD 1238
Taber Abrasion Resistance(H-18, 1000 Gm, 1000 Cycles)30.89mg/revolu.—
Tear Resistance(Die C)85520 in/min—

Table 3 of 4

7 rows
CharacteristicValueUnitMethod
Heat Aging-Air (168 hours at 150°C)No Change——
Heat Aging-Brake Fluid (168 hours at 150°C)No Change——
Heat Aging-Transmission Fluid (168 hours at 150°C)No Change——
Vicat Softening Temperature (Rate A)400°FD 648
Duro Type D61—D 2240
Izod Impact Strength Notched 40°CNo Breakft-lb/inD 256
Melt Point425°F—

Table 4 of 4

1 row
CharacteristicValueMethod
UL 94 Flame Class (Specimen 1.6mm)HB (V-O grades available)UL 94

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