Knowde Enhanced TDS
Identification & Functionality
- Plastics & Elastomers Functions
- Technologies
- Product Families
Features & Benefits
- Labeling Claims
- Key Characteristics
Solar UV resistant, silane crosslinkable, Halogen Free, flame retardant compound for low-voltage building wire applications (VW-1 Rated – styles XHHW-2, RHW-2, RHH, and SIS)
Applications & Uses
- Markets
- Plastics & Elastomers End Uses
Properties
- Flame Rating
- Physical Form
- Physical Properties
- Mechanical Properties
- Flammability
- Fire & Smoke Properties
- Low Temperature Properties
| Value | Units | Test Method / Conditions | |
| Degree of Cross-linking | 86 | % | ASTM D2765 |
| Specific Gravity (at 23°C) | 1.64 | g/cm³ | ASTM D792 |
| Value | Units | Test Method / Conditions | |
| Crushing Test | 1857 | lbs | UL 1581 UL 2556 |
| Deformation | 3 | % | UL 1581 UL 2556 |
| Elongation Set (Hot Elongation Test: 15 at 150°C, 0.2 N/mm² Load) | 2.5 | % | SACO AEI DWI-QA4007 based on ICEA T-28-562 |
| Dielectric Breakdown (at Initial) | 42 | kV | UL 1581 UL 2556 |
| Elongation Under Load (Hot Elongation Test: 15 at 150°C, 0.2 N/mm² Load) | 41 | % | SACO AEI DWI-QA-4007 based on ICEA T-28-562 |
| Dielectric Breakdown (Retention After Glancing Impact) | 37 | % | UL 1581 UL 2556 |
| Elongation (After Oil: 96 Hours at 100°C) | 79 | % Retention | UL 1581 UL 2556 |
| Elongation at Break | 167 | % | UL 1581 UL 2556 |
| Elongation at Break (After Oil: 60 Days at 75°C) | 90 | % Retention | UL 1581 UL 2556 |
| Elongation at Break (After Thermal Aging: 7 Days at 121°C) | 89 | % Retention | UL 1581 UL 2556 |
| Relative Permittivity (at 90°C / 60Hz) | 3.76 | — | UL 1581 UL 2556 |
| Shrinkback | 0 | mm | UL 1581 UL 2556 |
| Tensile Strength (After Oil: 60 Days at 75°C) | 91 | % Retention | UL 1581 UL 2556 |
| Tensile Strength (After Oil: 96 Hours at 100°C) | 81 | % Retention | UL 1581 UL 2556 |
| Tensile Strength (After Thermal Aging: 7 Days at 121°C) | 115 | % Retention | UL 1581 UL 2556 |
| Tensile Strength at Break | 2090 | psi | UL1581 UL 2556 |
| Value | Units | Test Method / Conditions | |
| Flame Resistance (FT2) | Pass | — | UL 1581 UL 2556 |
| Flame Resistance (VW-1) | Pass | — | UL 1581 UL 2556 |
| Value | Units | Test Method / Conditions | |
| Limiting Oxygen Index | 38 | % Oxygen | ASTM D2863 |
| Flaming Avg. Ds (After 4 min) | 29.7 | — | ASTM E662 |
| Non-Flaming Avg. Ds (After 4 min) | 30.8 | — | ASTM E662 |
| Flaming Avg. Dm (Corrected) | 176.6 | — | ASTM E662 |
| Non-Flaming Dm (Corrected) | 139.3 | — | ASTM E662 |
| Flame Test - 30 mil on 14 AWG Solid Copper | Pass | — | VW1 |
| Flame Test - 30 mil Jacket over 4 pair PE Core | Pass | — | UL 1666 |
| Value | Units | Test Method / Conditions | |
| Cold Impact (at -40°C) | Pass | No Cracks | UL 1581 UL 2556 |
| Cold Bend (at -40°C) | Pass | No Cracks | UL 1581 UL 2556 |
Regulatory & Compliance
- Certifications & Compliance
Technical Details & Test Data
- Processing
The pre-grafted SX653 must be extruded with type CM540U catalyst masterbatch in the proportion of 95:5 by weight. We suggest dosing the two components directly in the hopper 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® HF V/T can be processed with a single screw extruder having proper temperature control and a low compression metering screw. Substitution of the breaker plate and screens with a spacer ring that provides full-flow cross-section is also recommended. Pressure tooling should have short land and narrow gum space (see below). This system may also be used with alternate catalyst CM540U/1 to optimize cure rates and processibility for given equipment.
The following temperature profile and equipment parameters are suggested:
Barrel Zones Head Die Celsius 154°-171°C 177°C 179°C Fahrenheit 310°-340°F 350°F 355°F Screw Design - 1.2:1 compression ratio (up to maximum of 1.8:1) metering screw designed for LSZH compounds.
Tooling Design - Pressure - on-size double-angle or short-land single-angle die with gum space < 2x wall thickness Tubing - doubleangle die having DDR of approximately 1.5 and DRB close to 1.0. 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 90°C, or by exposure to low pressure steam. 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 0.5% 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 CM540U and all color masterbatches be dried prior to usage for 4-6 hours at 150°F (60°C) using a desiccant dryer.
Packaging & Availability
- Packaging Information
The physical form of both SX653 and CM540U is free-flowing pellets.
Storage & Handling
- Storage
Due to the moisture sensitivity of SX653 it is packaged in a heat-sealed moisture-impervious liner. 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 30°C
- Avoid storage outside and in direct sunlight
- Use within 8 hours of opening packaging