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You are here:Home >news>Plastic electrical control

Plastic electrical control

PVC resin: the most cost-effective cable materials

Published on:2013/11/20 11:17:39

Keyword:Cable, PVC, extruders, plasticizers, resins, wires, vinyl, flame retardant, polypropylene, polyethylene
Introduction:Lin Yuan will stand, complete cable material flame retardant, low smoke with the heat, it is best to choose itself with these characteristics of the p...

        

Yuan Lin position will complete the cable material flame retardant, low smoke with the heat, it is best to choose itself with these characteristics of the polymer material. Such as: fluoropolymers, but because of the use of expensive and difficult to promote. Polyethylene (PE), polypropylene (PP) has a low smoke, but flammable, must be added to expand capacity in order to achieve good flame retardant requirements, so that the mechanical properties will lead to decline with the electrical properties. For example: Germany LSZH cable material standards (VDE 0207) with China polyvinyl chloride (PVC) cable materials Standard (GB 8815-88) compared relatively, the tensile strength of the former and the latter is only about 1/3 to 1/2 , elongation at break, and the latter is only 70% to 80%, the volume resistivity and the latter is not. Furthermore, PE with poor flexibility of PP, for wire and cable coating with only infrequent use of drag move occasions.

Lin pointed out that the Court will

, PVC resin with high flame resistance with high electrical insulating properties and the price is cheap, is the current largest amount of cable materials raw materials. Overhead insulated grade PVC cable material processing operations with the ordinary 70 ℃ Insulation grade PVC cable material processing steps exactly the same, just slightly different process conditions. Machining process is divided into grinding, mixing, screening, extrusion granulation with the package.

The three salt

grinding, two salts, lead stearate, light and heat stabilizer additives with a solid plasticizer, and then on a three-roll mill grinding; carbon black mixed with a plasticizer, in a three-roll grinding machine grinding. Adjust roll away, after three grinding fineness of the solid material in 25μm or less. The material will be transported to the finely mixing process.

Lin Yuan would recommend, PVC powder mixture into the extruder hopper, by heating, cutting, plastics, in the head flange and once filtered, the filter 60 mesh, the molten material through the nose , under the action of the rotating cutter into cylindrical pellets, the ventilator to the hopper, after cooling package. Production overhead insulated grade PVC cable material when sections of extruder temperature control with the production of ordinary 70 ℃ Insulation grade PVC cable material when sections of extruder temperature control average height of about 10 ℃.

      

Keyword:Cable, PVC, extruders, plasticizers, resins, wires, vinyl, flame retardant, polypropylene, polyethylene

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