CN102766297A

CN102766297A - Novel waterproof cable material for extrusion

Info

Publication number: CN102766297A
Application number: CN2012102649737A
Authority: CN
Inventors: 刘忠玉
Original assignee: CHENGDU SULI CABLE Co Ltd
Current assignee: CHENGDU SULI CABLE Co Ltd
Priority date: 2012-07-27
Filing date: 2012-07-27
Publication date: 2012-11-07

Abstract

The invention discloses a novel waterproof cable material for extrusion. The cable material is characterized in that the cable material is prepared from the following components by weight percent: 72-78% of ethylene-vinyl acetate copolymer, 8-11% of plasticizer dioctyl phthalate, 3% of lubricating agent dibasic phthalic acid, 6-7.5% of filler calcium carbonate, 2.5% of stabilizing agent calcium stearate and 3-4% of color masterbatch, wherein ethylene in the ethylene-vinyl acetate copolymer accounts for 60-72% and vinyl acetate in the ethylene-vinyl acetate copolymer accounts for 28-40%; the cable material is applied to extrusion and stranding processes; and the conventional equipment in the cable manufacturing enterprises is used. The cable material has the characteristics of simplicity and convenience in operation, low manufacturing cost, high work efficiency and the like.

Description

A kind of extruding with the novel cable material that blocks water

One, technical field:

The present invention relates to a kind of extruding with the novel cable material that blocks water.

Two, background technology:

The cable that blocks water of wires and cables industry manufacturing at present all uses: water-proofing powder, water blocking yarn, waterstop material water-proof material.Its principle that blocks water: when water was met at the cable fault position, these materials absorbed the moisture after rapidly and keep gel in the unit time, flow thereby stop water further to immerse and cause vertically.The cable that blocks water that has the data record to adopt the import super-strong water-absorbing material to produce is surveyed vertical two ends through detection streamer, and the right-hand member length of flooding is 900mm, and the left end length of flooding is 1000mm.There is the imperfect problem of block-water effect.201110192928.0 patent discloses a kind of cable with vertical waterproofing type packing material, the weight proportion of its material component is: acrylic elastomer ACM100, vulcanizing agent 4-7, vulcanization aid 4-7, Natural manganese dioxide 6-8, zinc oxide 7-10, leveler WB221-3, softening agent WB3506-8, Mo Deli 935P1-3, silane coupling agent 0.5-3, strengthening agent 30-60, weighting agent 90-105, anti-aging agent 2-5, stablizer 3-6.The special-shaped bar of the filling of processing by material water-proof material of the present invention; Have steady chemical structure, not good by microbiological degradation, gellifying property, swelling capacity is high, in cable stranding process, vertically fills water baffle bar material of the present invention; After cable adopts water shutoff material; The electric property of cable improves, and has prolonged the work-ing life of cable, has practiced thrift resource.Patent 02135239.9 transmission cable with core line of alumium-based composite carbon fiber material and preparation; Transmission cable with core line of alumium-based composite carbon fiber material and preparation belong to the power transmission field of material preparation; It is characterized in that it being a kind of by alumium-based composite carbon fiber material core enhanced aluminum steel cable, the core of this aluminum steel cable is a matrix by many aluminum or aluminum alloy, is uniform-distribution with mixed carbon fibre on it; The shared volume ratio of fiber is 50-60%; Mixed carbon fibre is made up of HM carbon fibre and high-strength carbon fiber, and wherein to account for the volume percent of total fiber be 20-50% to HM carbon fibre, and the aluminum base carbon fiber composite material filament is formed; Wire core diameter is 2.5-3.6mm; Cable size is 16-40mm, and the aluminum base carbon fiber composite material core directly places the center of multilayer aluminum steel, forms aluminum base carbon fiber composite material core transmission cable.The method that patent 02131936.7 is produced cable insulation material relates to a kind of method of producing the cable protection material through extrusion molding olefin type polymer compsn, and said compsn for example is the olefin type thermoplastic elastomer compsn.The cable protection material of extrusion molding has the surface of smooth flow, and forms good equilibrated distribution of material.Therefore, this cable protection material has good wear resistance.Such material be through mix and mediate olefin type polymkeric substance and suitable additive thus process the olefin type polymer compsn, with said compsn be cut into pellet and when the compsn temperature being remained on 190 ℃-250 ℃ the extrusion molding pellet form.

Three, summary of the invention

The present invention is a kind of novel cable material that blocks water of extruding usefulness, and its principle that blocks water is that cable is damaged the degree that reaches bare exposed conductor under the effect of external force, and this material has superpower moment resilience and restores and deadend, stops water radially, vertically flow.Extrude with the novel cable material that blocks water according to of the present invention, produce the cable that blocks water, divest water blocking layer and insulation layer, exposing conductor length is 100mm ± 1.5mm, does immersion test in 24 hours, and the vertical two ends of cable length of flooding is 1.0～2.0mm.The application of this cable material that blocks water; Only extrude, twist system technology, complex fabrication process such as relatively coating, filling, winding have characteristics such as easy and simple to handle, low cost of manufacture, working efficiency height; To use all be the conventional equipment that cables manufacturing enterprise has, need not bigger input.

Base-material: Injecatable EVA Copolymer 72%-78%, wherein: ethene 60%-72%, vinyl acetate between to for plastic 28%～40%; Softening agent: o-phthalic acid dibutyl ester 8%-11%; Lubricant: two alkali formula phthalic acids 3%; Filler: lime carbonate 6%-7.5%; Stablizer: calcium stearate 2.5%; Look female 3%-4%; More than be weight ratio; Extrude, twist system technology.With existing water-proofing powder, water blocking yarn, waterproofing rope, when the waterstop material produce blocks water cable, water-proofing powder be coated in conductor single line surface its local might burst, water blocking yarn is bumped between the conductor single line gap and twists system at random; Disconnected, local root, the yarn shifting of lacking of local yarn; Waterproofing rope is filled between the crack between the insulation work in-process; Disconnected, the local scarce root of rope, rope displacement; Whether the problems referred to above can be avoided and be effectively controlled and prevent; Water-proofing powder, water blocking yarn, waterproofing rope, waterstop are the processes that in the unit time, all has interior suction, expansion, gel to block water, and in the block water water yield advanced when not being completed into and exceed the water yield in the unit time of gel, remain to be discussed in the processing mode of leading intravital water.Suggestion is adopted to extrude and use novel material water-proof material because this material water-proof material produces and has superpower resilience stability and deadend under external force in a flash behind the cable and adhere to conductor, can stop water from vertically, radially immersion.

Four, description of drawings

Fig. 1 is a kind of extruding with the novel cable material construction of cable schematic diagram that blocks water.

Five, embodiment

In Fig. 1,1 is the conductor single line, and 2 is material water-proof material, and 3 is insulating material.Base-material: Injecatable EVA Copolymer 75%, wherein: ethene 63%, vinyl acetate between to for plastic 31.5%; Softening agent: o-phthalic acid dibutyl ester 9.8%; Lubricant: two alkali formula phthalic acids 3%; Filler: lime carbonate 6.7%; Stablizer: calcium stearate 2.5%; Look female 3.1%; More than be weight ratio; Extrude, twist system technology.Institute uses equipment to be cables manufacturing enterprise conventional equipment.Have characteristics such as easy and simple to handle, low cost of manufacture, working efficiency height.

Claims

1. extrude with the novel cable material that blocks water and it is characterized in that base-material for one kind: Injecatable EVA Copolymer 72%-78%, wherein: ethene 60%-72%, vinyl acetate between to for plastic 28%～40%; Softening agent: o-phthalic acid dibutyl ester 8%-11%; Lubricant: two alkali formula phthalic acids 3%; Filler: lime carbonate 6%-7.5%; Stablizer: calcium stearate 2.5%; Look female 3%-4%; More than be weight ratio; Extrude, twist system technology, institute uses equipment to be cables manufacturing enterprise conventional equipment.