CN102955212B - Special low-smoke halogen-free flame retardant cladding layer material for butterfly-shaped introduction cable of access network - Google Patents
Special low-smoke halogen-free flame retardant cladding layer material for butterfly-shaped introduction cable of access network Download PDFInfo
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- CN102955212B CN102955212B CN201110251298.XA CN201110251298A CN102955212B CN 102955212 B CN102955212 B CN 102955212B CN 201110251298 A CN201110251298 A CN 201110251298A CN 102955212 B CN102955212 B CN 102955212B
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Abstract
The invention discloses a special low-smoke halogen-free flame retardant cladding layer material for a butterfly-shaped introduction cable of an access network. The special low-smoke halogen-free flame retardant cladding layer material comprises the following material components in parts by weight: 5-15 parts of high-fused ethylene-vinyl acetate copolymer, 5-15 parts of low-fused ethylene-vinyl acetate copolymer, 5-15 parts of polyethylene, 55-65 parts of fire retardant, 10-20 parts of compatilizer, 2-3 parts of ultra-high molecular weight silicone, and 0.3-0.8 part of anti-oxygen. According to the cladding layer material, a large amount of high-fused ethylene-vinyl acetate copolymer is used in a base material, so that the flowability of the material can be improved, the material has good surfaces in a rapid extruding process; moreover, when the cross section of a rubber-insulated optical cable is 8-shaped, the middle connection seam is smooth and firm because of the good material flowability. In addition, for reducing the curtain coating phenomenon in the rapid extrusion type extruding process, the ultra-high molecular weight silicone master batch, instead of polyethylene wax with a small molecular weight, is used as a lubricant. Furthermore, since the use amount of the compatilizer is increased in the cladding layer material and the fire retardant powder is treated by using a silane coupling agent, the binding property of the cladding layer material with an optical fiber and a reinforcing piece of the material can be enhanced and the optical attenuation degree can be greatly reduced.
Description
Technical field
the present invention relates to the special low-smoke non-halogen flame-retardant coating layer material of Access Network butterfly leading in cable.
Background technology
access Network butterfly leading in cable, is commonly called as covered wire cable, and in intelligent acess engineering, the house wiring near user is link the most complicated, and the bending property of conventional chambers optical cable, tensile property can not meet the demand of fiber-to-the-home house wiring.Covered wire cable has single core, twin-core structure, also can make quadrature arrangement, and namely xsect is 8 fonts, and reinforcement is positioned at Liang Yuan center, can adopt metal or nonmetal structure, and optical fiber is positioned at the geometric center of 8 fonts.The clad of covered wire cable is mainly low-smoke halogen-free flame retardant material, covered wire cable is the product that new development in nearly 2 years is got up, demand increases suddenly, and domestic supplier does not develop the PP Pipe Compound of this kind of optical cable clad, just uses existing common low-smoke halogen-free material.Existing common low-smoke halogen-free material mainly uses low melting means ethylene-vinyl acetate copolymer (melting means is between 2-8) as base-material, to arrange in pairs or groups a little compatilizer, and the Tissuemat E lubricant of small-molecular-weight, there is various disadvantages like this: first, covered wire cable belongs to fine rule, if large-scale production, require quite high for extruded velocity, require that the situation lower surface that material is being extruded fast is still fine, but existing low-smoke halogen-free material is owing to adopting low melting means ethylene-vinyl acetate copolymer as base-material, the mobility of material is bad, under high filler loading capacity, extruded velocity is difficult to raise very high, and curtain coating phenomenon is serious, secondly, the xsect of covered wire cable is when in 8-shaped, and due to reasons such as mould restrictions, the discharging for middle connecting sewing place requires very high, common low-smoke halogen-free material due to mobility bad, the easy fracture in connecting sewing place, and the too low surface of cohesive strength is crude etc., again, coating layer material directly contacts with optical fiber and reinforcement thereof, if bonding loosely, shrinking serious words can be very large to the influence of fading of fiber-optic signal, only use a little compatilizer in existing common low-smoke non-halogen flame-retardant coating layer material, make signal attenuation on covered wire cable general larger.
Summary of the invention
the object of this invention is to provide the special low-smoke non-halogen flame-retardant coating layer material of Access Network butterfly leading in cable that material flowability is good and good with the cohesiveness of optical fiber and reinforcement thereof, such material surface in quick extrusion is better, and connecting sewing place is firmly smooth, can also greatly reduce optical fiber attenuation degree.
for achieving the above object, the technical solution used in the present invention is: the special low-smoke non-halogen flame-retardant coating layer material of Access Network butterfly leading in cable, the component in this coating layer material and content are by weight
high melting means ethylene-vinyl acetate copolymer 5-15
low melting means ethylene-vinyl acetate copolymer 5-15
tygon 5-15
fire retardant 55-65
compatilizer 10-20
super high molecular weight silicone 2-3
antioxidant 0.3-0.8;
described high melting means ethylene-vinyl acetate copolymer is the hot melt adhesive level ethylene-vinyl acetate copolymer of melting index more than 200;
described low melting means ethylene-vinyl acetate copolymer is the extrusion grade ethylene-vinyl acetate copolymer of melting index between 2-8;
described fire retardant adopts one or more the combination in aluminium hydroxide, magnesium hydroxide, Firebrake ZB, APP, and processes in homo-mixer through silane coupling agent, and the particle diameter of described aluminium hydroxide, described magnesium hydroxide is 1 ~ 3 μm;
described compatilizer is ethylene-vinyl acetate copolymer grafted maleic anhydride copolymer;
described super high molecular weight silicone is take tygon as the super high molecular weight siloxane of carrier, and siloxane molecule amount is more than 2,000,000;
described antioxidant adopts four [3-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester, 4,4 '-thiobis (the 6-tert-butyl group-3-methylphenol), dilauryl thiodipropionate, (2,4-di-tert-butyl-phenyl) tris phosphite, β, β ' combination of a kind of in-sulfuration dipropionic acid distearate or two kinds.
due to the utilization of technique scheme, the present invention compared with prior art has following advantages: this coating layer material, the high melting means hot melt adhesive level ethylene-vinyl acetate copolymer of more amount is used in base-material, the mobility of material can be improved, make material surface in quick extrusion better, and the xsect of covered wire cable is when in 8-shaped, in the middle of good material flowability ensures, connecting sewing place is firmly smooth; In addition, in order to reduce the curtain coating phenomenon occurred in crushing failure at high speed formula extrusion, adopting super high molecular weight silicone master batch as lubricant, avoiding the Tissuemat E lubricant using small-molecular-weight; Furthermore, in coating layer material, increase the consumption of compatilizer, and fire retardant powder uses silane coupling agent process, can strengthen the adhesive property of coating layer material and optical fiber and reinforcement thereof, can greatly reduce optical fiber attenuation degree like this.
Embodiment
set forth the present invention further below.
coating layer material of the present invention is specially for the low-smoke halogen-free flame retardant material of covered wire cable exploitation, what first will solve is the flowability problem of material under height is filled, above, " background technology " part is mentioned, existing common low-smoke halogen-free flame retardant material, the low melting means ethylene-vinyl acetate copolymer (melting means is between 2-8) of main use is as base-material, because existing low-smoke halogen-free flame retardant material major part is used for large cable, therefore require that extruded velocity is slow, fear cracking, coating layer material of the present invention is due to for the less flex cable of wire diameter, so need not problem of Cracking be considered, therefore in coating layer material of the present invention, employ a large amount of high melting means hot melt adhesive level ethylene-vinyl acetate copolymers, this just well solves the problem of the mobility of material from base-material.Coating layer material of the present invention not use only high melting means hot melt adhesive level (more than 200) ethylene-vinyl acetate copolymer as base-material, improve the mobility of material, also adopt super high molecular weight import silicone (more than 2,000 ten thousand) as lubrication, decrease the curtain coating in extrusion, and improve the consumption of compatilizer, and fire retardant powder is processed, add the bounding force of material and optical fiber and reinforcement thereof.
specifically, the special low-smoke non-halogen flame-retardant coating layer material of Access Network butterfly leading in cable of the present invention, component in this coating layer material and content are by weight high melting means ethylene-vinyl acetate copolymer 5-15, low melting means ethylene-vinyl acetate copolymer 5-15, tygon 5-15, fire retardant 55-65, compatilizer 10-20, super high molecular weight silicone 2-3, antioxidant 0.3-0.8, and high melting means ethylene-vinyl acetate copolymer is the hot melt adhesive level ethylene-vinyl acetate copolymer of melting index more than 200, low melting means ethylene-vinyl acetate copolymer is the extrusion grade ethylene-vinyl acetate copolymer of melting index between 2-8, fire retardant adopts aluminium hydroxide, magnesium hydroxide, Firebrake ZB, one or more combination in APP, and process in homo-mixer through silane coupling agent, aluminium hydroxide, the particle diameter of magnesium hydroxide is 1 ~ 3 μm, the good fire resistance of coating layer material is ensure that by flame retardant compositions, fire retardant powder is through silane coupling agent process, such one side can dispersion powder, ensure fire retardant powder being uniformly distributed in coating layer material, fire retardant powder is avoided to be polymerized to group, on the other hand, silane coupling agent can improve fire retardant powder and high melting means ethylene-vinyl acetate copolymer, low melting means ethylene-vinyl acetate copolymer, poly compatibility, and strengthen the adhesive property of coating layer material and optical fiber and reinforcement thereof, compatilizer is ethylene-vinyl acetate copolymer grafted maleic anhydride copolymer, because high melting means ethylene-vinyl acetate copolymer and tygon, fire retardant compatibility are bad, so have employed compatilizer to improve between resin and the compatibility of resin and fire retardant, increase the consumption of compatilizer simultaneously, also can strengthen the adhesive property of coating layer material and optical fiber and reinforcement thereof, super high molecular weight silicone is take tygon as the super high molecular weight siloxane of carrier, and siloxane molecule amount, more than 2,000,000, adopts super high molecular weight silicone master batch as lubricant, can reduce the curtain coating phenomenon occurred in crushing failure at high speed formula extrusion like this, antioxidant adopts four [3-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester, 4,4 '-thiobis (the 6-tert-butyl group-3-methylphenol), dilauryl thiodipropionate, (2,4-di-tert-butyl-phenyl) tris phosphite, β, the combination of a kind of in β '-sulfuration dipropionic acid distearate or two kinds, the antioxidation of antioxidant can reduce the aging speed of coating layer material.
coating layer material of the present invention, a large amount of high melting means hot melt adhesive level ethylene-vinyl acetate copolymers is used in base-material, the mobility of material can be improved, make material surface in quick extrusion better, and the xsect of covered wire cable is when in 8-shaped, in the middle of good material flowability ensures, connecting sewing place is firmly smooth; In addition, in order to reduce the curtain coating phenomenon occurred in crushing failure at high speed formula extrusion, adopting super high molecular weight silicone master batch as lubricant, avoiding the Tissuemat E lubricant using small-molecular-weight; Furthermore, in coating layer material, increase the consumption of compatilizer, and fire retardant powder uses silane coupling agent process, can strengthen the adhesive property of coating layer material and optical fiber and reinforcement thereof, can greatly reduce optical fiber attenuation degree like this.
when preparing coating layer material of the present invention, the material component proportioning by weight of clad: high melting means ethylene-vinyl acetate copolymer 5-15, low melting means ethylene-vinyl acetate copolymer 5-15, tygon 5-15, fire retardant 55-65, compatilizer 10-20, super high molecular weight silicone 2-3, antioxidant 0.3-0.8, add carry out in masticator mixing, time is about 8-12min, melting temperature sends into Bitruder to discharging when 135 DEG C-150 DEG C, plastify through twin-screw, again through singe screw granulation, screw zones temperature is as follows: feeding section 90-110 degree Celsius, transportation section 120-130 degree Celsius, fluxing zone 130-140 degree Celsius, head temperature 135-145 degree Celsius, granulation adopts air-cooled fervent technique, finished product is drying to obtain again after making particle.Coating layer material obtained like this as covered wire cable PP Pipe Compound, material flowability can and adhesive property good, product quality is excellent, and reduction optical fiber attenuation degree greatly.
Claims (1)
1. the special low-smoke non-halogen flame-retardant coating layer material of Access Network butterfly leading in cable, is characterized in that: the component in this coating layer material and content are by weight
High melting means ethylene-vinyl acetate copolymer 5-15
Low melting means ethylene-vinyl acetate copolymer 5-15
Tygon 5-15
Fire retardant 55-65
Compatilizer 10-20
Super high molecular weight silicone 2-3
Antioxidant 0.3-0.8;
Described high melting means ethylene-vinyl acetate copolymer is the hot melt adhesive level ethylene-vinyl acetate copolymer of melting index more than 200;
Described low melting means ethylene-vinyl acetate copolymer is the extrusion grade ethylene-vinyl acetate copolymer of melting index between 2-8;
Described fire retardant adopts one or more the combination in aluminium hydroxide, magnesium hydroxide, Firebrake ZB, APP, and processes in homo-mixer through silane coupling agent, and the particle diameter of described aluminium hydroxide, described magnesium hydroxide is 1 ~ 3 μm;
Described compatilizer is maleated ethylene vinyl acetate copolyme;
Described super high molecular weight silicone is take tygon as the super high molecular weight siloxane of carrier, and siloxane molecule amount is more than 2,000,000;
Described antioxidant adopts four [3-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester, 4,4 '-thiobis (the 6-tert-butyl group-3-methylphenol), dilauryl thiodipropionate, (2,4-di-tert-butyl-phenyl) tris phosphite, β, β ' combination of a kind of in-sulfuration dipropionic acid distearyl alcohol ester or two kinds.
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| CN201110251298.XA CN102955212B (en) | 2011-08-30 | 2011-08-30 | Special low-smoke halogen-free flame retardant cladding layer material for butterfly-shaped introduction cable of access network |
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| CN201110251298.XA CN102955212B (en) | 2011-08-30 | 2011-08-30 | Special low-smoke halogen-free flame retardant cladding layer material for butterfly-shaped introduction cable of access network |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410446686.7A Division CN104177694A (en) | 2011-08-30 | 2011-08-30 | High-binding-strength optical cable coating material |
| CN201410439382.8A Division CN104194140A (en) | 2011-08-30 | 2011-08-30 | Preparation technique of lower-fiber-attenuation sheath material for connection to network optical cable |
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| CN102955212A CN102955212A (en) | 2013-03-06 |
| CN102955212B true CN102955212B (en) | 2014-12-24 |
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| CN103865162B (en) * | 2014-03-17 | 2017-10-31 | 苏州亨利通信材料有限公司 | Cable fire proofing and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101575431A (en) * | 2009-06-16 | 2009-11-11 | 中纺投资发展股份有限公司 | EVA foam composition capable of being injection molded |
| CN101702049A (en) * | 2009-11-30 | 2010-05-05 | 苏州亨利通信材料有限公司 | Scratch resistant environmental low-smoke halogen-free flame resistant sheath material for special optical cable |
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| AUPR043300A0 (en) * | 2000-09-29 | 2000-10-19 | Compco Pty Ltd | Halogen-free polymeric compositions |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101575431A (en) * | 2009-06-16 | 2009-11-11 | 中纺投资发展股份有限公司 | EVA foam composition capable of being injection molded |
| CN101702049A (en) * | 2009-11-30 | 2010-05-05 | 苏州亨利通信材料有限公司 | Scratch resistant environmental low-smoke halogen-free flame resistant sheath material for special optical cable |
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Effective date of registration: 20171101 Address after: 215234 Tianwan Industrial Zone, seven Town, Wujiang, Jiangsu, Suzhou Co-patentee after: Jiangsu Hengtong Photoelectric Co., Ltd. Patentee after: Suzhou Hengli Communication Materials Co., Ltd. Address before: Suzhou City, Jiangsu province 215234 Wujiang province Jiangsu City Hengtong town No. 88 Road seven Patentee before: Suzhou Hengli Communication Materials Co., Ltd. |
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