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Description of products
KJWDZ-YJ-J90 . KJWDZ-YJ-J105 . KJWDZ-YJ-J125 . KJWDZ・YJ・J150 is irradiable crosslinked low smoke halogen free flame retardant insulating material. Does not contain mercury, lead, Ming, fetters, yi, cadmium six heavy metals, its performance in line with the RoHS directive and REACH regulations related requirements. The product has good flame-retardant properties, physical and mechanical properties and good temperature resistance. Suitable for the insulation layer of communication cable, control cable and power cable.
Main performance indicators
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Item
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Unit
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Technical requirements
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KJWDZ-YJ-J 90
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KJWDZ-YJ-J 105
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KJWDZ-YJ-J 125
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KJWDZ-YJ-J 150
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Density
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g/cm3
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<1.55
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<1.55
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<1.55
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<1.55
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tensile strength
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Mpa
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>10
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>10
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>10
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>10
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elongation at break
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%
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>150
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>150
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>150
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>150
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thermal ageing condition
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120°Cx168h
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135°Cx168h
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158°Cx168h
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180°Cx168h
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tensile strength gradient
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%
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±25
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±25
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±25
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±25
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elongation at break gradient
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%
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±25
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±25
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±25
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±25
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thermal extension200°C*15min *0.2MPa
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elongation under load
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%
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<100
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<100
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<100
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<100
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permanent deformation after cooling
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%
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<25
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<25
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<25
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<25
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dielectric strength
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MV/m
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>20
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>20
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>20
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>20
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20°Cvolume resistivity
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Q-m
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>1x10'2
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>1x10,2
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21x10”
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>1x10,2
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low temperature impact embrittlement temperature
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°C
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-30
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-30
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-30
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-30
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index of the gas
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%
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>30
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>30
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>30
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>30
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halogen acid gas content
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mg/g
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<5
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<5
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<5
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<5
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pH value
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/
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>43
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>4.3
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>4.3
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>4.3
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Electrical conductivity
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Us/mm
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<10
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<10
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<10
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<10
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toxicity index
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/
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<5.0
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<5.0
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<5.0
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<5.0
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smoke density
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flameless
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Ds max
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<350
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<350
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<350
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<350
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with flame
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<100
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<100
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<100
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<100
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Processing technology
This product processing performance is superior, suitable for extrusion pipe, half extrusion pipe, extrusion die extrusion. The length-to-diameter ratio of the extrusion screw is 18~25, the compression ratio is less than 3:1, and the temperature control in each area of the barrel should have a cooling device.
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Model
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barrel temperature
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head temperature
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KJWDZ-YJ-J90. KJWDZ-YJ-J105, KJWDZ-YJ-J125 x KJWDZ-YJ-J150
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130~140°C
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150-160°C
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Notes
① Before processing, ensure that screw, barrel, hopper thoroughly clean, processing process is strictly prohibited to bring impurities.
② Once the raw materials are opened, it is recommended to use them within 24 hours. If the package is damaged, it should be dried before use.
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