See Table 1 and Table 2 for the classification and performance of PVC plastics for insulation and sheathing.
Types of | Performance requirements | Operating temperature | The main purpose |
Insulation grade | Good electrical insulation, a certain heat resistance, softness | 70 ° C | Communication, control, signal and low voltage power cable insulation |
Ordinary insulation grade | It has certain electrical insulation properties, good flexibility and atmospheric resistance, and low cost. | 70 ° C | Indoor fixed laying wire, sheathed cord, 500V agricultural cable and instrument mounting line insulation |
Heat resistant insulation grade | It has better heat aging resistance, pen resistance to deformation and good electrical insulation performance. | 90 ° C 105 ° C | Insulation of marine cables, aviation conductors, power cables and installation wires that require high heat resistance. |
High electrical performance insulation grade | The preferred electrical insulation properties, high insulation resistance, good dielectric properties, and certain heat resistance. | 70 ° C | The insulation of the power cable with a voltage of 6kV-10kV. |
Oil and solvent resistant insulation grade | It has good oil resistance, solvent resistance and softness, and has good electrical insulation properties. | 70 ° C | Insulation grade for electrical cables used to contact oils and chemicals. |
Flame retardant insulation grade | It has good electrical insulation performance, high flame resistance and good softness. | 70 ° C | Insulation of fixed power cables, mining cables, and installation wires. |
Table 2 Classification and performance of PVC plastic for sheath
Types of | Performance requirements | Operating temperature | The main purpose |
Ordinary protection level | It has sufficient mechanical strength, heat resistance, photoaging and cold resistance. | 70 ° C | The outer sheath of plastic wire and cable and the outer sheath of other cables. |
Cold resistant layer | It has high cold tolerance and good softness at low temperature. | 70 ° C | Outdoor and cold resistant wire and cable sheathing. |
Soft layer | It has high softness and good cold resistance. | 70 ° C | Cold and soft wire and cable sheath. |
Heat resistant layer | Good heat resistance. | 90 ° C 105 ° C | Heat resistant wire and cable sheath. |
Oil resistant layer | Good oil resistance and chemical resistance. | 70 ° C | A sheath for wire and cable that comes into contact with oils and chemicals. |
Easy tear layer | Low tear resistance, easy to lay and low price. | 70 ° C | A protective layer for insulated wires for indoor installation. |
Mildewproof, termite resistant, anti-rat protection level | Good anti-bioactivity, termite resistance, and mildew resistance. | 70 ° C | Cable sheathing for tropical and warm tropical regions. |
Flame retardant layer | Good resistance to combustion. | 70 ° C | Wire and cable sheath with high safety requirements. |
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