PEXIDAN® J/T is a low density flame-retardant XLPE system curable by moisture and consists of a silane pregrafted base compound A-3001 and a flame-retardant catalyst masterbatch CAT-012FR. Mixed and extruded in the proper proportions (60:40), the two components result in a material that is curable by exposure to 70-95°C hot water or even ambient moisture. PEXIDAN® J/T is designed to meet SAE J1128 standards for GXL, TXL and SXL type insulation. PEXIDAN® J/T is halogenated but is RoHS-compliant.

Polymer Name: Low Density Polyethylene (LDPE)

Processing Methods: Extrusion

Additives Included: Flame Retardant

Technical Data Sheet

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Identification & Functionality

Additives Included
Plastics & Elastomers Functions
Technologies

Features & Benefits

Key Characteristics

Low density moisture curable polyethylene compound for SAE J1128 Automotive wire applications.

Applications & Uses

Plastics & Elastomers End Uses
Plastics & Elastomers Processing Methods

Properties

Physical Form
Physical Properties
ValueUnitsTest Method / Conditions
Battery Acid (Swell, No Cracking)1.5%SAE J1128 6.7
Degree of Cross-linking65%ASTM D2765
Diesel (Swell, No Cracking)1.5%SAE J1128 6.7
Engine Coolant (Swell, No Cracking)1.5%SAE J1128 6.7
Engine Oil (Swell, No Cracking)1.5%SAE J1128 6.7
Ethanol (Swell, No Cracking)1.5%SAE J1128 6.7
Insulation Volume Resistivity10^11Ohm-mmSAE J1128 Section 6.14
Gasoline (Swell, No Cracking)1.5%SAE J1128 6.7
Resistance to Pinch2.4kgSAE J1128 Section 6.9
Resistance to Sandpaper Abrasion4000mmSAE J1128 Section 6.10
PS Fluid (Swell, No Cracking)1.5%SAE J1128 6.7
Resistance to OzonePass DielectricNo CrackingSAE J1128 Section 6.8
Specific Gravity (at 23°C)1.13g/cm³ASTM D792
Trans Fluid (Swell, No Cracking)1.5%SAE J1128 6.7
Mechanical Properties
ValueUnitsTest Method / Conditions
Cold BendPassNo CrackingSAE J1128 Section 6.5
Elongation Under Load (Hot Elongation Test: 15 min / 150°C, 0.2 N/mm² Load)50%SACO AEI DWI-QA-4007 based on ICEA T-28-562
Dielectric WithstandPassSAE J1128 Section 6.4
Low Temperature Brittleness Point (LTBP)max. -70°CASTM D746
Elongation at Break300%SAE J1128 Section 6.3
Tensile Strength at Break2300psiSAE J1128 Section 6.3
Flammability
ValueUnitsTest Method / Conditions
Flame Propagation Test (at 45°C)PassSAE J1128 Section 6.6

Regulatory & Compliance

Certifications & Compliance

Technical Details & Test Data

Processing

The pre-grafted base PEXIDAN® A-3001 must be added with type CAT-012FR catalyst masterbatch in the proportion 60:40 by weight. We strongly suggest dosing the two components directly in the throat of the extruder using a gravimetric or loss-in-weight feeder. In order to prevent scorching the grafted compound and the catalyst masterbatch must be stored separately and mixed just prior to consumption.
PEXIDAN® J/T can be processed with PE single screw extruders having proper temperature control and a good mixing screw (2.5:1 ratio at least

The following temperature profile is suggested:

  Barrel Zones Head Die
Celsius 154°-171°C 185°C 185°C
Fahrenheit 310°-340°F 365°F 365°F

These conditions may depend on the equipment being used. It is recommended using conveyors and tools shaped in order to prevent stagnation in the head. In case of prolonged shutdown, purge the extruder with LDPE.

Curing - Curing can be done by immersion in hot water at 70°-95°C, by exposure to low pressure steam, or ambient atmospheric moisture. In all cases curing time depends on wall thickness, temperature, relative humidity and quantity of wire on the reel.

Color Masterbatch - A wide range of commonly used color masterbatches based on LDPE are available. A use level of 1.5% by weight should give an acceptable color but this will be dependent upon the concentrate itself. Levels of concentrates should be kept to a minimum because they can detract from performance. It is recommended that the catalyst and color masterbatches be dried prior to usage 4-6 hours at 60°C (150°F) using a desiccant dryer. 

Packaging & Availability

Packaging Information
The physical form of both PEXIDAN® A-3001 and CAT-012FR is free-flowing pellets, and are available in 1500-lb (680-kg) and 2000-lb (907-kg) gaylords respectively, or in 300-lb (136-kg) fiber drums.

Storage & Handling

Storage and Handling

Due to the moisture sensitivity of PEXIDAN®, SACO AEI Polymers suggests that the following points should be considered when storing the materials: 

  • Ambient temperature generally not exceeding 30°C 
  • Avoid direct exposure to sunlight and weathering 
  • Once the package has been opened it is suggested that the entire contents be used.