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PEXIDAN® L/T-UV

Sold by SACO AEI Polymers
PEXIDAN® L/T-UV is a high density PEX system consisting of a silane grafted basecompound A-1001 and a catalyst masterbatch CAT-003 (or A-1022 and CAT-117). When mixed and extruded in the proper proportions, the two-component system results in a material that is crosslinkable by exposure to moisture or by immersion in hot water at 90-95°C. PEXIDAN® L/T is listed by NSF International to standards 14 and 61 and to Canadian Standards Association standard B137.5. NSFI certification to ASTM F876 and ASTM F2023 testifies to its superior resistance to oxidation by hot, chlorinated water. PEXIDAN® L/T is permitted to be used in domestic continuous re-circulation systems and is listed by NSF as a NSF-pw CL5 / PEX 5006 material.
Polymer Name: High Density Polyethylene (HDPE)
Processing Methods: Extrusion
Melt Flow Index: 0.7 g/10
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Identification & Functionality

Plastics & Elastomers Functions
Technologies

PEXIDAN® L/T-UV Features & Benefits

Labeling Claims
Key Characteristics

High density moisture-curable PE compound for hot & cold water plumbing pipe. Suitable for DR 9 pipe applications in continuous service at operating conditions of 140ºF and 80 psi.

Applications & Uses

Properties

Physical Properties
ValueUnitsTest Method / Conditions
Degree of Cross-linking70%ASTM D2765
Hydrostatic Design Basis: 68% DOC (at 180°F (82°C)800psiASTM D638
Hydrostatic Design Basis: 68% DOC (at 200°F (93°C)630psiASTM D638
Hydrostatic Design Basis: 68% DOC (at 73°F (23°C))1250psiASTM D2837
Melt Flow Rate (at 190°C / 2.16kg)0.7g/10minASTM D1238
Specific Gravity (at 23°C)0.946g/cm³ASTM D792
Mechanical Properties
ValueUnitsTest Method / Conditions
Elongation under Load (Hot Elongation Test: 15 at 150°C, 0.2 N/mm² Load)30%SACO AEI DWI-QA-4007 based on ICEA T-28-562
Elongation at Break (at 23°C)240%ASTM D638
Elongation at Break (at 82°C)200%ASTM D638
Elongation at Break (at 93°C)240%ASTM D638
Elongation at Yield (at 23°C)9%ASTM D638
Elongation at Yield (at 82°C)12%ASTM D638
Elongation at Yield (at 93°C)14%ASTM D638
Flexural Elastic Modulus (at -40°C)75000psiISO 178
Flexural Elastic Modulus (at 0°C)55000psiISO 178
Flexural Elastic Modulus (at 23°C)30000psiISO 178
Linear Expansion Coefficient (between -100°-85°C)1.5 x 10^-41/ °KASTM D696
Oxidative Induction Time (at 220°C)min. 50MinutesASTM D3895
Permanent Elongation (set) After Cooling0%SACO AEI DWI-QA-4007 based on ICEA T-28-562
Specific Heat (at 23°C)1.92J/(g °K)-
Vicat Softening Point124°CASTM D1525
Young's Modulus (at -40°C)335000psiISO 527
Young's Modulus (at 0°C)245000psiISO 527
Tensile Strength at Break (at 23°C)3425psiASTM D638
Young's Modulus (at 23°C)125000psiISO 527
Tensile Strength at Break (at 82°C)1740psiASTM D638
Tensile Strength at Break (at 93°C)1740psiASTM D638
Tensile Strength at Yield (at 23°C)3100psiASTM D638
Tensile Strength at Yield (at 82°C)1625psiASTM D638
Tensile Strength at Yield (at 93°C)1260psiASTM D638

Regulatory & Compliance

Quality Standards

Technical Details & Test Data

Processing

Extruder - The grafted base resins A-1001 or A-1022 must be mixed with type CAT-003 or CAT-117 catalyst masterbatch in the proportion 95:5 by weight. Introduction of the component mixture directly in the hopper of the extruder using a gravimetric or loss-in-weight feeder is strongly recommended to obtain accurate mixtures. In order to prevent scorching the grafted compound and the catalyst masterbatch must be stored separately and mixed just prior to consumption.

PEXIDAN® L/T, L/T-UV and L/T Eclipse can be processed with single screw extruders having proper temperature control and a good mixing PE screw (2.5:1 ratio at least). These temperatures may depend on the equipment being used. All tooling should be designed to prevent stagnation of the material anywhere in the system. In case of prolonged shutdown, purge the extruder with HDPE.

Extruder Temperature Recommendations - The following temperature profile is suggested:

  Barrel Zones Head Die
Celsius 160°-177°C 185°C 185°C
Fahrenheit 310°-350°F 365°F 365°F

Color Masterbatch - Available catalyst masterbatches for use in this system include:

  • PEX 5006 listed - CAT-003 Natural, CAT-003 Red, CAT-003 White, CAT-003 Blue, CAT-117 Blue
  • PEX 5306 listed - CAT-003CX Black, CAT-208UV Red, CAT-188UV White, CAT-142UV Blue - In combination with CX Black - CAT-003CX Red, CAT-003CX White, CAT-003CX Blue

Curing - Curing can be done by immersion in hot water at 90°-95°C, or by exposure to low pressure steam. In all cases curing time depends on pipe wall thickness, temperature, relative humidity and any packaging used. It is suggested that the catalyst and color masterbatches be dried for 4-6 hours at 60°C (150°F) in a desiccant dryer prior to usage 

Packaging & Availability

Packaging Information

PEXIDAN® A-1001, A-1022, and the CAT-003 and CAT-117 masterbatches are all available in 1400-lb (635-kg) gaylords or 300-lb (136kg) fibre drums.

Storage & Handling

Storage and Handling

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

  • Maintain at 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.

Most Viewed Documents

Document Name
Type
Products
PEXIDAN® L/T Technical Data Sheet
Technical Data Sheet
PEXIDAN® L/T, PEXIDAN® L/T ECLIPSE, PEXIDAN® L/T-UV
Technical Data Sheet
Products: PEXIDAN® L/T, PEXIDAN® L/T ECLIPSE, PEXIDAN® L/T-UV