Описание материалов:
UNIGARD™HP DFDA-6530 NT is a flame retardant, irradiated cross-linked polyethylene copolymer used as wire insulation material. It is recommended to use it for 600 volt power cables and control cables, which are suitable for applications with operating temperatures as high as 90°C in humid environments.
UNIGARD™HP DFDA-6530 NT can be used in XHHW, RHW, RHH, SIS, and USE A, B or C applications. When the insulation layer thickness is 30 mil (0.76mm), its 14 AWG wires can meet the VW-1 application requirements. This material has been approved for UL Style 20292 applications. Each manufacturer must contact UL for certification requirements related to the purpose of its application. The best performance can be obtained when the irradiation amount is 20 megarads.
| Главная Информация | |
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| Используется | - Огнезащитная изоляция
- Галогенная изоляция
- Изоляция низкого напряжения
- Применение проводов и кабелей
- Изоляционный материал
- Влагостойкий изоляционный материал
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| Формы | |
| Метод обработки | - Коэкструзионное формование
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| Физический | Номинальное значение | Единица измерения | Метод испытания |
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| Плотность | 1.30 | g/cm³ | ASTM D1505 |
| Механические | Номинальное значение | Единица измерения | Метод испытания |
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| Прочность на растяжение | 12.4 | MPa | ASTM D638 |
| Удлинение при растяжении (Break) | 250 | % | ASTM D638 |
| Флекторный модуль-
1% Secant | 103 | MPa | ASTM D790 |
| Старение | Номинальное значение | Единица измерения | Метод испытания |
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| Прочность на растяжение-
7 дней
(121 °C) | 100 | % | ASTM D638 |
| Коэффициент удлинения-
7 дней
(121 °C) | 95 | % | ASTM D638 |
| Электрический | Номинальное значение | Единица измерения | Метод испытания |
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| SIC | | | UL 44 |
| in water 75°C (167°F), after 24 hrs | 3.23 | | UL 44 |
| in water 75°C (167°F), increase, 1 to 14 days | 2.0 | % | UL 44 |
| in water 75°C (167°F), increase, 7 to 14 days | 0.10 | % | UL 44 |
| Сопротивление изоляции-
В воде
(16 °C) | 50000 | Mohms/1000 ft | UL 44 |
| Воспламеняемость | Номинальное значение | Единица измерения | Метод испытания |
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| VW-1 | Pass | | UL 44 |
| Испытание пламени-
Hoizontal | Pass | | UL 44 |
| Электрический | Номинальное значение | Единица измерения | Метод испытания |
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| Диэлектрическая постоянная (60 Hz) | 3.20 | | ASTM D150 |
| Коэффициент рассеивания (60 Hz) | 3.0E-3 | | ASTM D150 |
| Воспламеняемость | Номинальное значение | Единица измерения | Метод испытания |
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| Индекс кислорода | 28 - 30 | % | ASTM D2863 |
| Инструкции по экструзии |
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| Conditions for a commercial extrusion run using DFDA-6530 NT are shown below. Using these conditions with a standard polyethylene screw afforded high quality finished wire. Exact extrusion characteristics will, of course, be dependent on the equipment in use and can only be determined during cable trials. Hopper drying at 150°F (66°C) before extrusion is recommended to remove moisture and diminish the possibility of die drool. Drying time is 4-6 hours.Compound
DFDA-6530 NT on #14 Solid Copper Conductor with 0.030" (0.76 mm) Wall Thickness.
Extruder
Screw L/D: 15:1 to 20:1
Screw Suggested: Single Flight
Compression Ratio: 2.5:1 to 3.5:1
Screen Pack: 40/20 mesh
Extrusion Temperatures
Typical conditions for 2.5 in diameter 24:1 L/D extruder
Barrel Feed Zone: 255°F (124°C)
Barrel Center Zone: 255°F (124°C)
Barrel Metering Zone: 260°F (127°C)
Crosshead:
Head: 255°F (124°C)
Die: 250°F (121°C)
Melt Temperature: 265°F (129°C)
Screw:
Circulating Water: 170°F (77°C)
Coloring
UNIGARD™ HP DFDA-6530 NT is a colorable compound. Our experience has been that the color masterbatch materials recommended for use with polyethylene wire and cable products serve the purpose in the DFDA-6530 NT. Generally speaking, color masterbatch added at the two percent by weight level gives adequate color and disperses well in the extrusion process.
Irradiation Processing Parameters: E-BEAM Services, Inc. Cranbury, NJ utilizing RDI 4.5 MeV Dynamitron accelerator. Respective voltage/current is 3.0 MeV/28 - 48 Ma. |
