Silane Crosslinked PE Compounds for Overhead Cable

Introduction
SCPA-7101A is monosile method silane crosslinked compound used in overhead cables, It takes polyethylene resin as the main raw material, the addition of silane, initiator, catalyst, antioxidant and other additives, the special process produced granule. It is processed through our cutting-edge mixing and granulation technology. It has the following advantages, excellent mechanical, electrical and heat aging properties. Long-term allowed working temperature is 90 ºC, recommended for medium voltage wire and cable.Characteristics
Product NameOverhead Cable Silane Crosslinked Compounds Rated
Voltages up to and including 10KVSpecifications & ModelsSCPA-7101ACharacteristics &UsagesOverhead cables with Cross-sectional area up to 10mm²CharacteristicsAPropertiesUnitRequired ValueTypical valueTest MethodTensile StrengthMPa≥13.516.5GB/T 1040-2006
ISO-527-1993Elongation at Break%≥350475GB/T 1040-2006
ISO-527-1993Ageing Property(135±2ºC,168h)GB/T 2951.12-2008
IEC60811-1-2-1985Variation of Tensile Strength%±20±206Variation of Elongation at Break%7Hot Set Test(200±3ºC,0.2Mpa,15min)GB/T2951.21
IEC60811-2-1:2001Elongation under load%≤100≤545Permanent Elongation after cooling%0Low Temperature Brittleness test(-76ºC)Fail data≤15/300GB/T 5470-2008
ISO-974-2000Dielectric StrengthMV/m≥2535GB/T 1408.1-2006
ISO-60243-1-1998Dielectric Dissipation Factor(50Hz,20ºC)--≤1x10-35x10-4GB/T 1409-2006
IEC-60250-1969Dielectric Constant
(50Hz,20ºC)--≤2.35-Volume Resistivity(20ºC)W.m≥5x10133.8x1014GB/T 1410-2006
IEC-60093-1980Resistance to Environmental Stress Cracking(1000h)%PassGB/T 2951.41-2008 IEC-60811-4-1-2004Weathering 0~1008h GB/T14049-2008
Variation of Tensile strength%12Variation of Elongation at Break%-6Weathering 504~1008hVariation of Tensile Strength%7Variation of Elongation at Break%-5Processing
Reference Extrusion Equipment
1,Single screw extruder with screw length/diameter ratio of 25/1 and screw compression ratio of 2.8-3.0.
2, It is recommended that the mold using extrusion type, if using a squeeze tube mould, material extrusion draw ratio should not be more than 1.5
3, Suggest to add 40 or 60 object layer stainless steel mesh
Reference Extrusion Processing TemperatureHeating areaZone 1Zone 2Zone 3Zone 4DieTemperature (ºC)160±10180±10190±10200±10210±10Note: due to different production equipment, field operators can adjust the reference temperature according to experience to meet the normal use.
Reference Use Steps
1, Ensure the screw barrel was thoroughly clean, no other material residues;
2, Make the melt directly from the nose, measure the melt temperature should be reached or higher than 195 ºC.
3, Downtime and mould to install
4, Start the screw, slowly let the melt flow, slow speed of traction to meet the set requirements.
Reference Crosslinking Conditions
General cable insulation layer thickness (3 mm) can be soaked in the above 90 ºC hot water after eight hours to complete the crosslinking, if the thickness of the insulation layer should be appropriately extended larger soaking time.
Other Considerations
1,Suggestions in the extrusion die with gas flame burner, removable to die cast, get a better surface.
2, If you want to add color masterbatch shall, before in the production of color masterbatch under the temperature of 65 + 5 ºC dry 4 hours, ensure the color masterbatch in dry state are added to the silane crosslinking. Add a ratio of 100:2, the user can also set when the increase or decrease according to need.
3, This product cannot be hot dry processing before use.
4, This product should be sealed immediately after it has not been used up after opening the bag. It can still be used within 1 month after resealing in the foil bag.
5, Due to the change in the production of the mold brief outage (half an hour) after restarting don't have to clean the screw and barrel in residual silane materials, in accordance with the general steps appropriate discharge to surface can be launched after normal production. If the downtime is longer than the suggested that the silane all material within the extruder emptying after downtime.
Package
Each bag is 25 kg weight.Aluminum plastic composite bag vacuum.