Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Plastics & Elastomers Functions
- Technologies
- Product Families
Features & Benefits
- Labeling Claims
- Materials Features
- Key Characteristics
Low density, moisture curable polyethylene compound, for low voltage building wire insulation (CSA RW90, RWU90, AC90, TECK90 - Sunlight Resistant).
Applications & Uses
- Markets
- Applications
- Plastics & Elastomers End Uses
Properties
- Physical Properties
- Mechanical Properties
| Value | Units | Test Method / Conditions | |
| Degree of Cross-linking | 72 | % | ASTM D2765 |
| Specific Gravity (at 23°C) | 0.92 | g/cm³ | ASTM D792 |
| Value | Units | Test Method / Conditions | |
| Deformation | 5 | % | CSA C22.2 No.38 |
| Elongation Under Load (Hot Elongation Test: 15 min / 150°C, 0.2 N/mm² Load) | 40 | % | SACO AEI DWI-QA-4007 based on ICEA T-28-562 |
| Elongation at Break | 360 | % | CSA C22.2 No.38 |
| Low Temperature Brittleness Point (LTBP) | max. -75 | °C | ASTM D746 |
| Elongation at Break (After Thermal Aging: 7 Days at 121°C) | min. 90 | % Retention | CSA C22.2 No.38 |
| Insulation Resistance (After 12 Weeks at 90°C) | 24000 | Gꭥ-meter | CSA C22.2 No.38 |
| Insulation Resistance (at 15°C) | 200000 | Gꭥ-meter | CSA C22.2 No.38 |
| Shrink Back | 0 | mm | CSA C22.2 No.38 |
| Tensile Strength at Break | 2450 | psi | CSA C22.2 No.38 |
| Tensile Strength at Break (After Thermal Aging: 7 Days at 121°C) | min. 95 | % Retention | CSA C22.2 No.38 |
| Tensile Strength at Break (After Xenon-Arc Exposure: 1000 Hours) | min. 95 | % Retention | CSA C22.2 No.38 |
| Elongation at Break (After Xenon-Arc Exposure: 1000 Hours) | min. 95 | — | — |
Regulatory & Compliance
- Certifications & Compliance
Technical Details & Test Data
- Processing
The pre-grafted base PEXIDAN® A-3001 must be added with type CAT-288UV catalyst masterbatch in the proportion 95:5 by weight. We strongly suggest dosing the two components directly in the throat of the extruder using a gravimetric or loss-in-weight feeder.order to prevent scorching the grafted compound and the catalyst masterbatch must be stored separately and mixed just prior to consumption.
PEXIDAN® R/T-UV 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. When using color masterbatch in an outdoor (SUNRES) application, it is important to select a masterbatch that will remain color-fast and not fade when outdoor weathered, that is a masterbatch in which the pigment is UV stable. SACO recommends consulting your color masterbatch supplier for guidance
Packaging & Availability
- Packaging Information
The physical form of both PEXIDAN® A-3001 and CAT-288UV is free-flowing pellets, and are available in 1500-lb (680-kg) gaylords 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:
Other precautions are:
- Packaging should remain sealed
- Avoid temperature above 30ºC
- Avoid storage outside and in direct sunlight
- Once the package has been opened it is suggested that the entire contents be used