Environmentally friendly elastic polyvinyl chloride cable material for wires and cables is a granular cable material made by mixing, plasticizing, and granulating polyvinyl chloride resin as the base material, adding plasticizers, stabilizers, antioxidants, fillers, and other additives.
Model, brand and various names, execution standards, purposes and specifications

Model	Maximum operating temperature of wire core (℃)	Name	Execution standards	Usage and Cable Material Specification
MLTH-70	70	70 ℃ PVC elastic protective layer material	GB/T8815-2008	Used as a protective layer material for soft mobile wires and cables in elevators, audio cables, etc
MLTH-90	90	90 ℃ PVC elastic protective layer material	GB/T8815-2008	Used for 90 ℃ soft mobile wire and cable protective layer material

Note: The relative density index and color are determined through negotiation between the supply and demand parties.

Mechanical and electrical properties

Experimental project	Company	Standard value
Experimental project	Company	MLTH-70	MLTH-90
Tensile strength	≥ MPa	12.5	12.5
Fracture tensile strain	≥ %	250	250
Brittle temperature	≤ ℃	-35	-35
Volume resistivity at 20 ℃	≥ Ω•m	1.0 × 10⁹	1.0×10⁹
Dielectric strength	≥ MV/m	18	18
Shore hardness	≤ ShoreA	70	70
Elongation and contraction rate	≤ %	140	140
200 ℃ thermal stability time	≥ min	60	80
Thermal aging performance
Thermal aging temperature	℃	80±2	100±2
Thermal aging time	h	168	240
Tensile strength after aging Maximum rate of change in tensile strength	≤ %	±30	±30
	≤ %	±30	±30

Processing technology
Using a general extruder for processing, with L/D ≥ 20, it is recommended to set the temperature at each point of the extruder as follows:

District Point	Zone 1	Zone 2	Zone 3	Zone 4	Zone 5	Mold head
Temperature ℃	140	160	170	175	180	175

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