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Thermoplastic flame retardant materials
UNIGARD™HP DGDA-1412 Natural is a halogen-containing flame retardant, thermoplastic high density polyethylene, used in communication grade insulation materials, with excellent extrusion processing properties, physical properties and electrical properties. It can be used not only for thin-walled insulation materials, but also for thick-walled COAX insulation materials, such as communication cables that meet NEC Article 725 and 800 requirements. When appropriate cable design and sheath material are selected, the material can make the cable meet the requirements of UL-1581 and Canadian Standards Association (CSA) FT-4 vertical bracket cable and UL-1666 rise cable combustion test.
| Главная Информация | |
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| Используется | - Огнезащитная изоляция
- Галогенная изоляция
- Изоляция низкого напряжения
- Применение проводов и кабелей
- Электронная изоляция
- Изоляционный материал
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| Формы | |
| Метод обработки | |
| Физический | Номинальное значение | Единица измерения | Метод испытания |
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| Плотность | 1.14 | g/cm³ | ASTM D1505 |
| Массовый расход расплава (MFR) (190°C/2.16 kg) | 0.75 | g/10 min | ASTM D1238 |
| Механические | Номинальное значение | Единица измерения | Метод испытания |
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| Прочность на растяжение 1 | 19.3 | MPa | ASTM D638 |
| Удлинение при растяжении 2(Break) | 500 | % | ASTM D638 |
| Старение | Номинальное значение | Единица измерения | Метод испытания |
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| Прочность на растяжение-
7 дней 3(121°C) | 90 | % | ASTM D638 |
| Коэффициент удлинения-
7 дней 4(121°C) | 90 | % | ASTM D638 |
| Электрический | Номинальное значение | Единица измерения | Метод испытания |
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| Диэлектрическая постоянная | | | ASTM D1531 |
| 100 kHz | 2.42 | | ASTM D1531 |
| 1 MHz | 2.42 | | ASTM D1531 |
| Коэффициент рассеивания | | | ASTM D1531 |
| 100 kHz | 2.0E-4 | | ASTM D1531 |
| 1 MHz | 2.0E-4 | | ASTM D1531 |
| Воспламеняемость | Номинальное значение | Единица измерения | Метод испытания |
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| Огнестойкость (1.90 mm) | V-2 | | UL 94 |
| Индекс кислорода | 28 | % | ASTM D2863 |
| Инструкции по экструзии |
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| Typical extrusion conditions are listed below. Exact conditions will depend upon the equipment used and the application.Extruder
Screw L/D: 15:1 to 24:1
Screw Suggested: Polyethylene metering
Compression Ratio: 2.5:1 to 3.5:1
Screen Pack: 20/40/60/20 mesh
Extrusion Temperatures
Typical conditions for 2.5 in diameter 24:1 L/D extruder.
Barrel Feed Zone: 360°F (182°C)
Barrel Transition Zone: 420°F (215°C)
Barrel Metering Zone: 440°F (227°C)
Crosshead Zone: 440°F (227°C)
Melt Temperature: 440°F (227°C)
Wire Preheat Temperature: 280°F (138°C)
Die
PE type double taper
Die Size
Finish Diameter +0.001 in
Coloring
UNIGARD HP DGDA-1412 Natural is a colorable compound. Our experience has been that the color masterbatch materials recommended for use with polyethylene or ethylene copolymer wire and cable products serve the purpose in DGDA-1412 Natural. Generally speaking, color masterbatch added at the level from 0.5 to 1.0% by weight gives adequate color and disperses well in the extrusion process. |
| Примечание |
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| 1 . | Based on 22 AWG (0.643 mm dia.) copper with 0.014 in. insulation. |
| 2 . | Based on 22 AWG (0.643 mm dia.) copper with 0.014 in. insulation. |
| 3 . | Based on 22 AWG (0.643 mm dia.) copper with 0.014 in. insulation. |
| 4 . | Based on 22 AWG (0.643 mm dia.) copper with 0.014 in. insulation. |
