CN103554546B - Preparation method of polystyrene based flame-retardant wire-cable filling material - Google Patents
Preparation method of polystyrene based flame-retardant wire-cable filling material Download PDFInfo
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- CN103554546B CN103554546B CN201310568981.5A CN201310568981A CN103554546B CN 103554546 B CN103554546 B CN 103554546B CN 201310568981 A CN201310568981 A CN 201310568981A CN 103554546 B CN103554546 B CN 103554546B
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Abstract
The invention provides a polystyrene based flame-retardant wire-cable filling material belonging to the technical field of composite materials. The polystyrene based flame-retardant wire-cable filling material is obtained by adding a polystyrene waste, a flame retardant and a toughening agent into a high-speed mixing machine to perform kneading, then putting the mixture into a twin-screw extruder, adding a foaming agent for extrusion, and cooling in water. The wire-cable filling material is a frothed string of which the single-string diameter is less than 3mm, the stretching resistance of the wire-cable filling material is not less than 30N, the oxygen index of the wire-cable filling material is 36-55, and the wire-cable filling material has the characteristics of strong water resistance, light weight, flame retardance, low cost and the like, so that the problems of a common wire-cable filling material on the market at present are effectively solved, and the wire-cable filling material has a good market application prospect.
Description
Technical field
The present invention relates to a kind of electric wire packing material, particularly relate to a kind of preparation of polystyrene-based flame-retardant electric wire and cable packing material, belong to technical field of composite materials.
Background technology
Cable all needs to use packing material in preparation process, and the object that common cable is filled is: cable core structure is stablized, and keeps the rounding property of cable; With the sheath material that the packing material fictitious hosts of low cost is more expensive; Cable center's bedding core of multicore structure also plays mechanical damping effect, strengthens shock resistance and the extrusion performance of cable.Packing material generally comprises PP punching fiber crops, cotton paper, cotton thread, tNonwovens, and PP foams band, PE and PVC film, self-adhesion copper aluminium foil, twoly leads copper aluminium foil, anti-elater, nylon wire etc.Because the rope made of hemp, cotton yarn are soft, during stranding, form-dependent character is good, fills comparatively real, can keep stranding rounding, can save sheath rubber, reduce costs, because of but the most frequently used cable filler.But the rope made of hemp and cotton yarn have a fatal technique weakness, exactly after extruding sheath rubber, in the process of sulfuration, easy moisture absorption gas, causes the foaming phenomena of sheath rubber, seriously have impact on sheath performance and the outward appearance of cable.Although cable socket has been done end socket process before sulfuration, but still can not ensure non-foaming, very easily cause cable quality accident.Another kind of conventional cable and wire packing material is polypropylene elastic cable, this material softness, white, and body is light, and belong to fibre product, just can use without the need to any secondary process after buying, the cable roundness of stranding is good, fills consolidation.But cable outward appearance thickness can be caused uneven, like Bamboo-shaped when extruding after eraser sheath carries out sulfuration; In high temperature vulcanized process, easily cause gasket for packing local melting, and with the adhesion of insulation layer phase, had a strong impact on insulating performance of cable.Other packing materials due to or containing fiber fines, or not fire-retardant, or high in cost of production reason, be restricted in actual applications.In addition, above-mentioned packing material is except above shortcoming, and maximum weakness is not fire-retardant, easily causes fire hazard.Therefore prepare a kind of mechanical property high, light weight, fire-retardant electric wire packing material is the new focus of industry development.
Summary of the invention
The object of the invention is for problems of the prior art, a kind of light weight be provided, mechanical property is high, the preparation method of polystyrene-based flame-retardant electric wire and cable packing material that flame retardant properties is good.
The preparation of the polystyrene-based flame-retardant electric wire and cable packing material of the present invention, after waste polystyrene, fire retardant, toughner are joined and mediates in high-speed mixer, be placed in twin screw extruder, add whipping agent and extrude the cord of single diameter at below 3mm, cool in water, both polystyrene-based flame-retardant electric wire and cable packing material.
Above-mentioned fire retardant is that (preparation method of palygorskite grafting resol is shown in document to palygorskite grafting resol: the UV absorber of resol/attapulgite clay nano composite material, wear antelope antelope etc., plastics industry, 2nd phase in 2010,400 orders are crushed in the present invention, use with powder state) with the compound of melamine phosphate, wherein the mass ratio of palygorskite grafting resol and melamine phosphate is 1:1 ~ 1:5.The addition of fire retardant is 10 ~ 25% of waste polystyrene quality.
Above-mentioned toughner is commercially available universal plastic toughner, and as glycerol, Holland produces F102, CAS:212-421 etc.The addition of toughner is 1 ~ 5% of waste polystyrene quality.
Whipping agent is water vapour or carbon dioxide, and its addition is that 2 ~ 6%(water vapour of waste polystyrene quality or the interpolation quality of carbon dioxide accurately control by gas meter).
Electric wire packing material prepared by the present invention is the foaming cord of single diameter 3mm, and its stretching resistance is greater than 30N, and oxygen index is 36 ~ 55.During use, the afterturn of many foaming cords uses, and mechanical property is more superior.
Polystyrene-based flame-retardant electric wire and cable packing material of the present invention, have water tolerance strong, light weight, the features such as fire-retardant, cost is low, efficiently solve existing market common electric wire packing material Problems existing, have good market application foreground.
Embodiment
Below by specific embodiment, the preparation of the polystyrene-based flame-retardant electric wire and cable packing material of the present invention and performance are elaborated.
Embodiment 1
By waste polystyrene 100 parts, 4 parts, palygorskite grafting resol, melamine phosphate 6 parts, toughner glycerol 1 part, joins after mediating in high-speed mixer, is placed in twin screw extruder; At twin-screw extrusion pusher side feeding machine side chain water receiving steam flow meter, 2 parts of water vapour are added (according to the quality that water vapour adds by this under meter, density, what flow relocity calculation went out water vapour passes into the time, water vapour can be controlled and add number) as foaming, extrude the cord of single diameter at below 3mm, cool in water, both obtain foamed polystyrene cable filling rope.The maximum holding capacity of single cord is 32N, and oxygen index is 55.
Embodiment 2
By waste polystyrene 100 parts, 8 parts, palygorskite grafting resol, melamine phosphate 12 parts, toughner glycerol 2 parts, joins after mediating in high-speed mixer, is placed in twin screw extruder; 4 parts of carbon dioxides are added (according to the quality that carbonic acid gas adds in twin-screw extrusion pusher side feeding machine, density, what velocimeter calculated carbonic acid gas passes into the time, carbonic acid gas can be controlled and add number) as foaming, extrude the cord of single diameter at below 3mm, cool in water, both obtained foamed polystyrene cable filling rope.The maximum holding capacity of single cord is 35N, and oxygen index is 36.
Embodiment 3
By waste polystyrene 100 parts, 10 parts, palygorskite grafting resol, melamine phosphate 15 parts, toughner glycerol 3 parts, joins after mediating in high-speed mixer, is placed in twin screw extruder; 2 parts of water vapour are added (according to the quality that water vapour adds in twin-screw extrusion pusher side feeding machine, density, what flow relocity calculation went out water vapour passes into the time, water vapour can be controlled and add number) as foaming, extrude the cord of single diameter at below 3mm, cool in water, both obtained foamed polystyrene cable filling rope.The maximum holding capacity of single cord is 31N, and oxygen index is 42.
Embodiment 4
By waste polystyrene 100 parts, 4 parts, palygorskite grafting resol, melamine phosphate 6 parts, toughner glycerol 4 parts, joins after mediating in high-speed mixer, is placed in twin screw extruder; 2 parts of carbonic acid gas are added (according to the quality that carbonic acid gas adds in twin-screw extrusion pusher side feeding machine, density, what velocimeter calculated carbonic acid gas passes into the time, carbonic acid gas can be controlled and add number) as foaming, extrude the cord of single diameter at below 3mm, cool in water, both obtained foamed polystyrene cable filling rope.The maximum holding capacity of single cord is 38N, and oxygen index is 50.
Embodiment 5
By waste polystyrene 100 parts, 4 parts, palygorskite grafting resol, melamine phosphate 6 parts, toughner glycerol 5 parts, joins after mediating in high-speed mixer, is placed in twin screw extruder; 6 parts of water vapour are added (according to the quality that water vapour adds in twin-screw extrusion pusher side feeding machine, density, what flow relocity calculation went out water vapour passes into the time, water vapour can be controlled and add number) as foaming, extrude the cord of single diameter at below 3mm, cool in water, both obtained foamed polystyrene cable filling rope.The maximum holding capacity of single cord is 40N, and oxygen index is 39.
Above-mentioned each raw material is all in mass parts.
Claims (4)
1. the preparation method of polystyrene-based flame-retardant electric wire and cable packing material, after waste polystyrene, fire retardant, toughner are joined and mediates in high-speed mixer, be placed in twin screw extruder, add whipping agent and extrude the cord of single diameter at below 3mm, cool in water, both polystyrene-based flame-retardant electric wire and cable packing material; Described fire retardant is the compound of palygorskite grafting resol and melamine phosphate, and the mass ratio of palygorskite grafting resol and melamine phosphate is 1:1 ~ 1:5; The addition of fire retardant is 10 ~ 25% of waste polystyrene quality.
2. the preparation method of polystyrene-based flame-retardant electric wire and cable packing material as claimed in claim 1, is characterized in that: the addition of toughner is 1 ~ 5% of waste polystyrene quality.
3. the preparation method of polystyrene-based flame-retardant electric wire and cable packing material as claimed in claim 1, is characterized in that: whipping agent is water vapour or carbon dioxide.
4. the preparation method of polystyrene-based flame-retardant electric wire and cable packing material as claimed in claim 3, is characterized in that: the addition of whipping agent is 2 ~ 6% of waste polystyrene quality.
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| CN201310568981.5A CN103554546B (en) | 2013-11-15 | 2013-11-15 | Preparation method of polystyrene based flame-retardant wire-cable filling material |
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| CN201310568981.5A CN103554546B (en) | 2013-11-15 | 2013-11-15 | Preparation method of polystyrene based flame-retardant wire-cable filling material |
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| CN103554546B true CN103554546B (en) | 2015-05-13 |
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| CN106633453A (en) * | 2016-11-16 | 2017-05-10 | 成都市创斯德机电设备有限公司 | Cross-linked smokeless flame-retardant cable material and preparation method thereof |
| CN112908542B (en) * | 2021-02-06 | 2022-02-15 | 全通电缆股份有限公司 | Fireproof flame-retardant cable and preparation method thereof |
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| CN103214744A (en) * | 2013-03-26 | 2013-07-24 | 安徽双荣电器电缆有限公司 | Environment-friendly PP mesh cable filling rope and preparation method thereof |
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