Semi-rigid flame-retardant high-electricity PVC sheath material for high-voltage cables
♦ Product name, model, purpose
Product Number | Product Name | Features and Uses |
BYZR-PVCH90 | 90℃ flame-retardant semi-rigid high-electricity PVC sheath for 110KV and above | Specially designed for high-voltage cables, insulation aging is better than other PVC, easy to process. |
DDZR-PVCH90 | 90℃ low-smoke, low-halogen, flame-retardant, high-electricity PVC sheath for 110KV or higher | Specially designed for high-voltage cables, insulation aging is better than other PVC, easy to process. |
♦ Product Manual：
The product of this project is a cable material made of polyethylene resin as the base material, adding plasticizers, stabilizers, flame retardants, smoke suppressants and other additives, and then mixing, plasticizing and granulating.
♦ Product Performance：
Typical values are shown in Table (6)
♦ Reference Standard：
GB/T8815-2002 or user standard.
♦ Processing Technology：
The product of this project is suitable for ordinary PVC screw type 150~200 to obtain a good extrusion process.
The recommended temperature is as follows:
District | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | Nose |
Temperature ℃ | 155 | 165 | 170 | 175 | 178 | 180 | 185 | 185 | 185 |
♦ Product packaging, Storage and Transportation:
The project adopts paper-plastic composite moisture-proof packaging, and the net weight of each bag is (25kg±0.2). The material is 40 bags for a set of tons of packaging and wooden pallets with PE film to seal against moisture, rain and sun. Keep a clean environment intact for easy transportation. The normal temperature of the warehouse is around 0℃~35℃, and the storage period of the products should not exceed one year from the date of production.
♦ Product Performance
Table（6）
Pilot Projects | Category | 90℃ flame-retardant semi-rigid high-electricity PVC sheath | 90℃ low-smoke, low-halogen, flame-retardant, high-electricity PVC sheath | ||
BYZR--PVCH90 | DDZR-PVCH90 | ||||
GB standard test method | Unit | Standard value | Typical value | Standard value | Typical value |
Density | g/cm3 | ≤1.42 | 1.4 | ≤1.58 | 1.56 |
Tensile Strength | Mpa | ≥20 | 25 | ≥16 | 20.5 |
Elongation at break | % | ≥220 | 310 | ≥180 | 250 |
Air aging box | ℃×h | 100×240 | passed | 100×240 | passed |
Tensile strength change rate | % | ±10 | 5 | 20 | 7 |
Change rate of elongation at break | % | ±15 | -7 | ±20 | -10 |
20℃ volume resistivity | Ω·m | 5×1012 | 7.8×1012 | 1×1012 | 2.5×1012 |
Embrittlement temperature | ℃ | -15 | passed | -15 | passed |
Dielectric Strength | MV/m | ≥20 | 28 | ≥20 | 25 |
Oxygen Index | % | ≥30 | 30.5 | ≥30 | 30.8 |
Thermally stable at 200°C | Min | ≥150 | 160 | ≥80 | 100 |
Thermal weight loss | g/cm2 | ≤18 | 15 | ≤15 | 13 |
HCL Content | — | — | ≤150 | passed | |
Smoke density flameless method | ≤ | — | — | ≤300 | passed |
Smoke density smoke method | ≤ | — | — | ≤300 | passed |
Shore D hardness | — | 50-55 | 53 | 50-55 | 50 |
Note: The typical value cannot be regarded as the standard of the specification limit or the design basis separately quoted. It can also be made into a "antproof" sheath according to user needs. The color is determined according to user needs.
