PVC wire, cable material requirements are higher, the mechanical properties, electrical properties, high and low temperature resistance, aging resistance should be higher performance.
So often choose Ⅱ resin (strict Ⅰ available resin), resin of impurities should be less, fisheye number should be less.
The stabilizer uses lead salt, and the use is better, the usual dosage is about 6 parts.
Plasticizer total dosage is generally below 60, common grade cable material with phthalate ester can, for the requirement of high electrical insulation, high temperature resistance cable material, can choose a high molecular weight plasticizer, such as phosphate ester.
The amount of lubricant is about 1, stearate, that is, stability, lubrication, often with stearic acid, paraffin and.
Some fillings such as satin burning clay can improve the electrical insulation performance and heat resistance, you can add 5 or so, the general filler is not used.
For special requirements of the sheath material, such as cold, heat (80℃, 105℃, 110℃, etc.), soft, to add some functional additives for treatment.
In addition, powder additives and plasticizer as far as possible ground into pulp, and then add people to PVC resin.