Corrugated metal pipe (CMP) grade flame-retardant smoke-suppressing polyvinyl chloride cable sheath material and preparation method thereof

Abstract

The invention provides a corrugated metal pipe (CMP) grade flame-retardant smoke-suppressing polyvinyl chloride cable sheath material and a preparation method thereof and belongs to the technical field of material. The invention solves the problem that in the prior art, the flame-retardant and smoke-suppressing effects and the mechanical property and the physical property of the cable sheath material are all good. The raw materials thereof comprise the following components in parts by weight: 100 parts of polyvinyl chloride, 5-15 parts of common plasticizer, 20-50 parts of flame-retardant plasticizer, 40-100 parts of fire retardant, 20-50 parts of smoke-suppressing agent, 5-10 parts of stabilizer, 40-80 parts of toughening modification agent and 1-5 parts of promoter; wherein the smoke-suppressing agent comprises ammonium octamolybdate, zinc molybdate and zinc borate which are compounded according to the proportion of 1:1 to 3:1 to 3 and coated by aluminium hydroxide the grain size of which is 1-5mu m according to the proportion of 1:1 to 3. The CMP grade flame-retardant smoke-suppressing polyvinyl chloride cable sheath material has the advantages of good flame-retardant and smoke-suppressing effect, mechanical property and physical property.

Description

technical field [0001] The invention relates to a cable sheathing material, in particular to a CMP grade flame-retardant and smoke-suppressing polyvinyl chloride cable sheathing material and a preparation method thereof, belonging to the technical field of new materials. Background technique [0002] With the rapid development of science and technology, the coverage of network communication is getting wider and wider. All kinds of high-rise buildings and intelligent buildings basically adopt the method of integrated wiring, and a large number of communication cables are laid between floors. Therefore, each country also has a strict evaluation standard for the fire protection level of these communication cables. UL divides the fire protection cable standards into CMP, CMR, CM, CMG and CMX. [0003] CMP grade cables are the cables with the highest requirements in the UL fire protection standard, and the applicable safety standard is UL910. The experiment stipulates that multi...

AI Technical Summary

Problems solved by technology

The cable material uses an anti-pre-crosslinking agent to suppress or prevent the occurrence of early crosslinking reaction of polyvinyl chloride, and improve the degradation of cross-linked polyvinyl chloride during processing and the problem of rough surface of the product, but the smoke suppressant of the cable material There is no pretreatment, and no toughening modifier is added to the material itself, but the processing performance of cross-linked polyvinyl chloride is improved to a certain extent, and the physical properties of the product will be greatly reduced due to the presence of a large amount of inorganic filler materials.

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