Ceramic low smoke halogen-free polyolefin refractory
Product description
Ceramic low smoke halogen-free polyolefin refractory is a new type of high performance refractory material developed for fire-resistant wire and cable. It takes polyolefin resin as the base material, adds high-efficiency porcelain filler, flame retardant and other functional additives, and is made by mixing, plasticizing and granulating. Compared with the traditional low smoke halogen-free material, its advantages are: in the flame burning or high temperature conditions can generate a hard ceramic shell, the shell does not melt, does not drip, can resist water spray, and has a very good heat insulation effect, can ensure the smooth flow of power and information control in the case of fire, for personnel escape and fire rescue for valuable time.
Product characteristics
● Excellent mechanical and electrical properties
Dielectric strength at room temperature ≥ 20KV/mm, volume resistivity ≥ 1.0 × 1013 Ω.cm, with the same level of hardness, wear resistance and tear resistance as low-smoke halogen-free cable materials;
● Excellent encrusts into porcelain performance
At temperatures above 650°C or under flame conditions, a complete ceramic shell can be quickly produced.
● Excellent fire resistance and thermal insulation
The ceramic shell does not crack or drip. In addition to excellent electrical isolation performance, it also has excellent oxygen insulation and heat insulation effect, which can effectively isolate the infringement of high temperature flame on the inside of the line, delay the decomposition of the inside of the material, avoid the fuse of the conductor in the flame, and ensure the smooth flow of the line in case of fire;
● Excellent economy and processability
Using ordinary polyolefin cable material processing equipment, a molding, simple process, continuous production, lower production costs;
● High fire resistance rating
The fire resistance rating of fire-resistant cables produced by ceramic low-smoke halogen-free polyolefin refractory materials can pass the following standard requirements:
(1) Class A standard of GB/T12666.6
(2)IEC 60331 standard
(3)GA 306.2 standard
● Excellent safety and environmental protection
Low smoke halogen-free, non-heavy metal, non-toxic and tasteless, in line with RoHS standards;
● Wide scope of application
It can replace ordinary oxygen barrier material and sheath material;
Main application
Medium and low voltage fire-resistant cables, flexible fire-resistant cables, fire-resistant power and control cables, mining cables, ship cables, etc.
Typical product data
| Test Items | Test Method | LSP335 |
| Specific gravity (g/cm3) ≤ | ASTM D1505 | 1.55 |
| Tensile strength (MPa) ≥ | IEC 60811 | 8.5 |
| Elongation at break (%) ≥ | IEC60811 | 400 |
| Volume resistivity (Ω.cm) ≥ | IEC 60093 | 1012 |
| Dielectric strength (MV/m) ≥ | IEC 60243 | 18 |
| Melt index (g/10min) | GB/T 3628-2000 | 1 |
Processing equipment and processing technology
Use ordinary polyolefin wire and cable extruder, processing temperature 160-170 ℃.
| Location | Zone 1 | Zone 2 | Zone 3 | Zone 4 | Zone 5 | nose |
| Temperature ℃ | 150-160 | 150-160 | 160-170 | 160-170 | 160-170 | 165-170 |
Safety and storage
* Polyolefin should not be exposed to the sun and rain during transportation.
* Store in dry and cool warehouse, avoid direct sunlight.
* Place out of reach of children.
Packing
* 25KG bag lined with plastic. Kraft paper composite bag packaging.
Key words:
Ceramifiable Polyolefin
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