High-flame-retardation low-smoke composite cable material for boosting communication light cables, and preparation technology thereof

Abstract

The invention relates to a high-flame-retardation low-smoke PVC composite material for boosting communication light cables, and a preparation technology thereof. The high-flame-retardation low-smoke PVC composite material for boosting communication light cables comprises, by weight, 100 parts of PVC resin with the polymerization degree of 1300, 15-40 parts of tricapryl trimellitate, 10-30 parts of phosphate ester, 10-20 parts of tetrabromophthalate, 10-30 parts of an ethylene-n-butyl acrylate-glycidyl ester copolymer, 5-15 parts of chlorinated polyethylene, 3-15 parts of diantimony trioxide, 3-15 parts of zinc stannate, 20-40 parts of magnesium hydroxide, 20-40 parts of aluminum hydroxide, 10-30 parts of ammonium molybdate, 5-15 parts of montmorillonite, 10-20 parts of a silicon-magnesium synergistic flame retardant, 5-10 parts of a calcium-zinc composite stabilizer, 1-3 parts of a lubricant, 0.2-1 part of an antioxidant, 2-4 parts of an acrylate polymer, and 1-3 parts of a linear polymer of alpha-methyl styrene. The high-flame-retardation low-smoke PVC composite material has the advantages of high flame retardation, good fire resistance, low smoke during combustion, unlikely propagation of flames, low heat release amount, and low release amount of toxic gases.

Description

technical field [0001] The invention relates to a communication optical cable cable material, in particular to a high flame-retardant and low-smoke composite cable material for a pressurized communication optical cable and a manufacturing process thereof. Background technique [0002] The high flame-retardant and low-smoke PVC composite material for supercharged cables is mainly used in the flame-retardant sheath material of CMP communication cables and optical cables. It has received more and more attention and attention. In the United States, the government has learned the lessons of the large-scale fires in the 1970s and formulated the National Electrical Code (NEC), which clearly stipulates that in the Plenum space (the ventilation space under the ceiling interlayer and raised floor in the building) Use CMP flame retardant data communication cables. In Europe, fire safety has been paid more and more attention, and data cable standards equivalent to CMP grades are also b...

AI Technical Summary

Problems solved by technology

In China, from the perspective of building electrical profession, the traditional way of wiring through pipe grooves is generally adopted, but more and more cases prove that the fire protection that relies solely on pipe passing is not reliable. Its own fire resistance is guaranteed, and the national standard GB 50174 stipulates that the computer room uses an open wiring method. This method puts forward higher requirements for the flame retardant performance of the cable itself, which requires high flame retardant grade materials. Guarantee the fire performance of this type of cable

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