CONTACT US

Shanghai Yong he Sheng Material Technology Co., LTD

Ceramic ized fire-resistant refractory polyolefin material

Product name, item and use

Name Item Use
Fireproof and fire-resistant ceramicized polyolefin sheath material for medium voltage cable YHS70014-ZH Medium voltage fireproof and fire resistant cable
Medium voltage cable fireproof refractory ceramicized polyolefin oxygen barrier YHS70020-G Medium voltage fireproof and fire resistant cable
Fire-resistant and fire-resistant ceramicized polyolefin insulation for low-voltage cables YHS70017-DJ Low-voltage fire-resistant and fire-resistant cable
Low-voltage cable fire-resistant refractory ceramicized polyolefin sheath material YHS70017-DH Low-voltage fire-resistant and fire-resistant cable

Product introduction

Fire-resistant and refractory ceramicized polyolefin material is a granular material obtained by processing polyolefin resin as a base material, adding special modifiers, flame retardants, stabilizers and other auxiliary agents through special processes.

This product not only has excellent insulation performance, but also has excellent flame retardancy and fire resistance, and excellent thermal insulation performance. Mainly suitable for high, medium and low voltage fire-resistant wires and cables, flexible fire-resistant cables, fire-resistant power and control cables, mining cables,marine cables, oil-field and offshore platform fire-resistant cables, fire-proof instrument cables, fire-proof signal and data cables, Shaft cables, fire-resistant fiber optic cables, automotive wires, home improvement wires

Extrusion process

When the storage environment is wet or the production surface is required to be high, the particles can be dried in a hot air hopper at 70 ℃ for 1-2 hours.

It is recommended to use a low compression ratio screw with L / D≥20 and compression ratio of 1: 1.2 ~ 1.5. The screw should be cleaned before extrusion to ensure the cleanliness of the product. It is recommended to use 80 mesh or 100 mesh filter to avoid impurities in the extrusion process, while ensuring the melt pressure to obtain a good appearance and material compactness. Because the difference between the actual temperature of the melt and the value indicated by the temperature control meter varies with the type of extruder, users are requested to choose the appropriate temperature according to the specific situation of the extruder used. The following temperatures can be used as a reference for commissioning:

Position Cylinder I Cylinder Ⅱ Cylinder Ⅲ Cylinder Ⅳ Cylinder Ⅴ Head and mold
Temperature 150±5 160±5 170±5 170±5 175±5 175±5

Packaging and storage

(25 ± 0.2) kg / bag, inner aluminum plastic composite bag, outer kraft paper bag (or customer specified packaging)

Stored in dry and ventilated place

Prevent sun, rain and water

Storage period is 6 months

Product performance

Project Units Standard YHS70014- ZH YHS70020- G YHS70017- DJ YHS70017- DH
Typical Typical Typical Typical
Density g/cm3 - 1.45 1.45 1.38 1.42
Hardness Shore A/D - 98/49 98/52 95/48 96/50
Tensile Strength ≥MPa 6 10.4 8.98 11.8 10.2
Elongation at break ≥% 100 490 260 278 360
Thermal Aging ℃╳h 200℃×15min×0.2MPa
Tensile Strength ≥MPa - 8.38 - 8.5 8.7
TS Change rate ≤% ±30 -3 - -4 -6
Elongation at break ≥% - 411 - 253 299
EB Change rate ≤% ±30 -16 - -9 -17
Volume Resistivity,at Ω .cm 1.0×1010 7.7×1012 4.7×1012 3.8×1014 2.8×1013
Dielectric Strength ≥Mv/m 18 24 22 28 26
Impact Brittleness Temperature Number of failures≤ >-45 >-45 >-45 >-45
15/30 0/30 0/30 0/30 0/30
Smoke Density GB/T 8323
Flaming ≤ 100 50 44 51 52
Non flaming ≤ 350 120 133 149 151
Acidity of gases evolve (PH)≥ 4.3 6.2 6.3 6.6 6.4
Conductivity of gases evolved ≤ μs/mm 10 0.5 0.5 1.0 0.5
Content of halogen acids ≤mg/g 0.5 0 0 0 0
Toxicity ≤ 2.5 0.3 0.6 0.3 0.5
environmental stress crack resistance ≥96h pass pass pass pass pass
thermal stress crack resistance ≥96h pass pass pass pass pass
Performance after sintering
bending strength ≥MPa - 17.3 15.6 5.9 9.8
Volume Resistivity ≥ Ω •m - ≥2.0*1017 ≥2.0*1017 ≥2.0*1018/sup> ≥2.0*1018
Dielectric Strength ≥Mv/m - ≥40 ≥40 ≥40 ≥40
ceramic retention ≥% - 81 85 80.2 82.9

Note: The above data is a typical value obtained by testing the product and is not a standard for testing restrictions.

Product center

Product center

INDUSTRIES

News

WhatsApp