Material formula and production method of waste cable material foaming filling strip

The invention relates to the technical field of cable filling materials, provides a material formula and a production method of a waste cable material foaming filling strip, and aims to recycle a polyvinyl chloride insulation material and a polyvinyl chloride sheath material of a waste cable to produce a light filling strip. The main scheme comprises the following components in parts by weight: 40-60 parts of recycled polyvinyl chloride particles; 10 to 20 parts of a plasticizer; 2-3 parts of a foaming master batch; 4-5 parts of a heat stabilizer; 1-2 parts of a dispersant; the foaming master batch comprises the following components in parts by weight: 10-20 parts of polyvinyl chloride resin; 260 to 290 parts of high temperature azodicarbonamide; 5-8 parts of a flow modifier; 4-5 parts of a heat stabilizer; 1-2 parts of a dispersant; and 60-70 parts of a plasticizer. Wherein the high-temperature azodicarbonamide is quickly decomposed at the high temperature of 180-190 DEG C and high pressure at the machine he