Building Wire

PVC cable material formula design points (1) for the general sheath PVC cable material. Plasticizer dosage is 0-60PHR, stabilizer 6-8PHR, lubricant 1.5-2PHR, filler 10-20PHR: plasticizer with poor plasticization efficiency, the amount should be more; when the amount of filler is large. Plasticizers, lubricants can be used in larger amounts; when using non-active fillers. The amount of plasticizers and lubricants should be larger; sheathing grade cable materials are generally added with 5PHR resistant cold plasticizers; 
(2) For general insulation grade cable material, plasticizer dosage is 40~50PHR. Stabilizer 6 ~ 8PHR. Lubricant l ~ 1.5PHR. Filler l0PHR around; plasticizers, lubricants reference jacket grade cable material; 
(3) Plasticizers such as DBP with high volatility cannot be used for cable materials; 
(4) In addition to high temperature resistant cable materials, high temperature plasticizers should be used. Stabilizer dosage should also be increased. Add 0.3 to 0.5 PHR of antioxidant; 
(5) For cable materials with high insulation requirements. Calcined clays should be used as fillers (plasticizing efficiency of polymeric polymeric plasticizers is poor. The amount of plasticizer should be increased as appropriate when formulating formulations; 
(7) When formulating a transparent cable formulation. Should be selected and the resin compatibility good saggers. Direct use of organic tin and other transparent stabilizers, and strictly control the amount of lubricant added; 
(8) Design of flame retardant cable compound Should use a composite flame retardant system is appropriate; 
(9) When formulating a high degree of polymerization cable formulation. Should use a composite processing modifier to improve its processing performance; 
(10) When formulating non-migratory cable compounds, polyester or high polymer plasticizers should be selected; 
(11) When the compound stabilizer is used, its amount is slightly more than that of the three salt stabilizers; 
(12) Under the condition that the cable material is processed and used normally. To minimize the amount of stabilizer. Prevent excessive amounts of it from producing a "filler effect." 

Cable material production process (1) Single screw extruder production process: 
Raw materials --- ingredients --- high-speed kneading machine --- single-screw extruder --- air-cooled --- screening magnetic separation --- measurement --- packaging. 
(2) single screw two-stage extruder production process: 
Raw materials --- ingredients --- high-speed kneading machine --- single-screw double-stage granulator --- cooling and drying --- screening magnetic separation --- measurement --- packaging. 
(3) Twin-screw extruder production process: 
Raw materials --- ingredients --- high-speed kneading machine --- twin-screw extruder --- air-cooled --- screening magnetic separation --- measurement --- packaging. 
(4) Rolling granulation production process flow: 
Raw materials----Advanced--High-speed kneader--Intermixer--Two-roll mill--Cooling sink--Drying--Cutter--Selecting magnetic separation-- - Metering - Packaging.