CN103064163B - Flame-retardant and fire-resistant optical cable - Google Patents
Flame-retardant and fire-resistant optical cable Download PDFInfo
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- CN103064163B CN103064163B CN201310018163.8A CN201310018163A CN103064163B CN 103064163 B CN103064163 B CN 103064163B CN 201310018163 A CN201310018163 A CN 201310018163A CN 103064163 B CN103064163 B CN 103064163B
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Abstract
The invention relates to a frame-retardant and fire-resistant optical cable which comprises a cable core and is characterized in that an inner water-resistant layer and an inner fire-resistant layer are coated on the cable core, and an outer fire-resistant layer is arranged outside the inner fire-resistant layer. A steel-plastic composite belt armor layer and a low-smoke zero-halogen outer protection sleeve are respectively coated the outermost layer of a cable. The frame-retardant and fire-resistant optical cable has high frame-retardant and fire-resistant performance, maintenance of good light transmission performance of the optical cable in high-temperature burning and cooling periods is ensured, and the high-grade frame-retardant, fire-resistant and low-smoke zero-halogen protection sleeve enables the optical cable to be high in oxygen index, good in flame retardant efficiency, low in fuming, high in light transmittance, and strong in nucleating after being burnt. Combustion residues are a hard outline layer, a ceramic vulcanization silicon rubber fire-resistant layer is capable of resisting fire within the temperature of 1200 DEG C and 1500 DEG C. A steel belt enables the optical cable to maintain quite high intensity and rigidity. The two points effectively reduce affection of internal stress of different components after the optical cable is burnt, light transmittance of the optical cable is further ensured, the burning from outside to inside of the optical cable is blocked and retarded, and frame-retardant and fire-resistant performance of the optical cable is further enhanced.
Description
Technical field
The present invention relates to a kind of flame-retardant optical cable, belong to optical communication transmission technique field.
Background technology
Existing fire-retardant cable is primarily of cable core, stiffener and fire retardant jacket composition, and its fire resistance mainly relies on fire retardant jacket to realize.Most of fire-retardant cable only meets single vertical burning C class burning vertical with bunchy.Be difficult to meet low cigarette, namely transmittance must not lower than 60% standard-required.
Existing fire resistant flame retardant optical cable is formed primarily of cable core, stiffener, fire resistant belt and fire retardant jacket, and vibrational power flow is unreasonable, and can only keep the light transmittance of 90 minutes at 750 DEG C of temperature, its flame-retardant performance is also undesirable.Be difficult to meet low cigarette, namely transmittance must not lower than 60% standard-required.
Actual application scenarios is once breaking out of fire, and optical cable should require to meet following several performance simultaneously:
Fire performance, namely meets optical cable and keeps light transmittance in burning and cooling period;
Prolong combustion fire resistance, namely meet single vertical burning and the requirement of bunchy testing vertical flammability;
Corrosion-free performance, namely meets halogen acid gas burst size and optical cable protective layer pH value between optical cable main combustion period and will reach the standard of control;
Low smoke performance, namely discharges less smog between optical cable main combustion period, namely meets the requirement being greater than the transmittance of 60%.
Only have and meet these conditions simultaneously, the security of the lives and property could be protected to greatest extent.
Summary of the invention
The technical problem to be solved in the present invention is that the deficiency existed for above-mentioned prior art provides the flame-retardant optical cable that a kind of vibrational power flow is reasonable, flame-retardant performance is stronger.
The technical scheme that the problem that the present invention is the above-mentioned proposition of solution adopts is: include cable core, it is characterized in that water blocking layer and interior flame retardant coating in cable core outer cladding, interior flame retardant coating is outside equipped with outer flame retardant coating, outermost layer steel-plastics covered composite band armor and the low smoke and zero halogen oversheath respectively of optical cable.
By such scheme, outer water blocking layer and/or nonmetal periphery reinforced part are set between flame retardant coating and composite steel-plastic belt armor outside.
By such scheme, between inside and outside flame retardant coating, be provided with non-metal reinforcement member and low smoke and zero halogen inner sheath, water blocking layer in the middle of low smoke and zero halogen inner sheath outer cladding.
By such scheme, described cable core is layer-twisted type cable core or central beam tube type cable core.
By such scheme, by ceramic sulphurated siliastic composite band, coated or voluble wrapping forms described inside and outside flame retardant coating.
By such scheme, described low smoke and zero halogen inner/outer sheath adds Halogen height expandable flame retardant smoke suppressant by fire retardant polyolefin base-material and makes.
By such scheme, described layer-twisted type cable core includes central reinforce member, and central reinforce member periphery is stranded Loose tube, is laid with fiber unit in Loose tube, and described fiber unit is optical fiber, fibre bundle or fibre ribbon.
By such scheme, containing water-blocking component in described Loose tube, described water-blocking component is the fine cream that blocks water, or water blocking yarn or water-proofing powder, forms half dry type or Full dry type layer twisting formula cable core respectively.
By such scheme, described central beam tube type cable core comprises center sleeve, is laid with fiber unit and water-blocking component in center sleeve.
Beneficial effect of the present invention is: 1, optical cable not only arranges inside and outside two-layer ceramic sulphurated siliastic flame retardant coating, and be provided with low smoke and zero halogen sheath, make the present invention have very strong flame-retardant performance, ensure optical cable during high-temp combustion and cooling period keep light transmittance; 2, low smoke and zero halogen sheath, adopts fire retardant polyolefin base-material, adds Halogen height expandable flame retardant smoke suppressant, during optical cable burning, make this polymkeric substance sheath Surface Creation one deck uniform porous carbonaceous froth bed, this layer has heat insulation, oxygen barrier, press down cigarette, and can prevent molten drop from producing, have stronger one-tenth nuclearity, not only oxygen index is high, good flame retardation effect to make optical cable, and the amount of being fuming is low, transmittance is high, and after burning, becoming nuclearity strong, combustion residue is the contour layer that one deck is harder; 3, between ceramic sulphurated siliastic flame retardant coating main combustion period more than 500 DEG C, not melting, do not drip, within very short time, change into the ceramic package that one deck is hard, form the thermofin that one deck is good, stop burning away of flame, and burning time is longer, temperature is higher, and ceramic is more obvious, fire-resistantly can reach 1200 DEG C-1500 DEG C; Meanwhile, steel band makes the strength and stiffness that optical cable keeps quite high after combustion; Above-mentioned 2 effectively reduce the impact of heterogeneity internal stress after optical cable burning, further ensure that the light transmittance of optical cable, blocks and delay optical cable ecto-entad and burn, further enhance the flame-retardant performance of optical cable; In addition, pottery sulphurated siliastic composite band also has good fire resistance, the smog of the white that can discharge during burning, has to water down black smoke in optical cable and become serving to burn the black smoke discharged, the transmittance of further raising optical cable, can meet the requirement of the transmittance being greater than 60%; The present invention guarantees that optical cable reaches the low cigarette of correlation standard, flame-retarding power, refractability and corrosion resistance.
Accompanying drawing explanation
Fig. 1 is the radial section figure of one embodiment of the invention.
Fig. 2 is the radial section figure of another embodiment of the present invention.
Fig. 3 is the radial section figure of third embodiment of the invention.
Embodiment
Embodiments of the invention are further described below in conjunction with accompanying drawing.
First embodiment as shown in Figure 1, for a kind of layer-twisted type list sheath list armouring flame-retardant optical cable, comprise the layer-twisted type cable core being positioned at optical cable center, described layer-twisted type cable core includes glass fibre central reinforce member 11, glass fibre central reinforce member periphery is stranded Loose tube 15, also can stranded gasket for packing 16 and water-blocking component 12, fiber unit 13 is laid with in Loose tube, described fiber unit is optical fiber, fibre bundle or fibre ribbon, containing water-blocking component 14 in described Loose tube, described water-blocking component is water blocking yarn or water-proofing powder, form Full dry type layer twisting formula cable core.Water blocking layer 21 in cable core outer cladding, interior water blocking layer is made up of water blocking yarn or waterstop, flame retardant coating 22 and outer flame retardant coating 23 in interior water blocking layer outer cladding, and described inside and outside flame retardant coating forms by ceramic sulphurated siliastic composite band is coated; Arrange extrernal resistance water layer 24 outside flame retardant coating outside, outermost layer steel-plastics covered composite band armor 25 and the low smoke and zero halogen oversheath 26 respectively of optical cable, described low smoke and zero halogen oversheath adds Halogen height expandable flame retardant smoke suppressant by fire retardant polyolefin base-material and makes.
Second embodiment as shown in Figure 2, for a kind of dry type central beam tube type list sheath list armouring flame-retardant optical cable, comprise the central beam tube type cable core being positioned at optical cable center, described central beam tube type cable core comprises low smoke and zero halogen center sleeve 17, fiber unit 13 and water-blocking component 12 is provided with in center sleeve, described fiber unit is optical fiber, fibre bundle or fibre ribbon, and described water-blocking component is water blocking yarn, forms dry type central beam tube type cable core; Water blocking layer 21 in cable core outer cladding, interior water blocking layer is made up of water blocking yarn or waterstop, flame retardant coating 22 and outer flame retardant coating 23 in interior water blocking layer outer cladding, and described inside and outside flame retardant coating forms by ceramic sulphurated siliastic composite band voluble wrapping; Nonmetal periphery reinforced part 27 is set outside flame retardant coating outside, nonmetal periphery reinforced part by glass fiber yarn, aramid yarn, highly must to be with or carbon fiber is formed; Outermost layer steel-plastics covered composite band armor 25 and the low smoke and zero halogen oversheath 26 respectively of optical cable, described low smoke and zero halogen oversheath adds Halogen height expandable flame retardant smoke suppressant by fire retardant polyolefin base-material and makes.
3rd embodiment as shown in Figure 3, for a kind of two sheath list armouring flame-retardant optical cables of dry type central beam tube type, comprise be positioned at optical cable center central beam tube type cable core, fiber unit 13 and water-blocking component 12 is provided with in the beam tube of center, described fiber unit is optical fiber, fibre bundle or fibre ribbon, and described water-blocking component is for being water blocking yarn.Water blocking layer 21 in cable core outer cladding, flame retardant coating in interior water blocking layer outer cladding, the nonmetal periphery reinforced part 27 of one deck is provided with outside interior flame retardant coating, belonging to periphery reinforced part by glass fiber yarn, aramid yarn, highly must to be with or carbon fiber is formed, nonmetal periphery reinforced part outer cladding low smoke and zero halogen sheath 28, middle level water blocking layer 30 is provided with outside sheath, the outer flame retardant coating 23 of middle level water blocking layer outer cladding, at the outer water blocking layer 24 of outer flame retardant coating outer cladding, described interior, domestic and abroad water blocking layer is made up of water blocking yarn or waterstop.Outermost layer steel-plastics covered composite band armor 25 and the low smoke and zero halogen oversheath 26 respectively of optical cable, described low smoke and zero halogen inner/outer sheath adds Halogen height expandable flame retardant smoke suppressant by fire retardant polyolefin base-material and makes.
Claims (5)
1. a flame-retardant optical cable, includes cable core, and it is characterized in that water blocking layer and interior flame retardant coating in cable core outer cladding, interior flame retardant coating is outside equipped with outer flame retardant coating, outermost layer steel-plastics covered composite band armor and the low smoke and zero halogen oversheath respectively of optical cable; Outer water blocking layer and/or nonmetal periphery reinforced part are set between outer flame retardant coating and composite steel-plastic belt armor; By ceramic sulphurated siliastic composite band, coated or voluble wrapping forms described inside and outside flame retardant coating; Non-metal reinforcement member and low smoke and zero halogen inner sheath is provided with, water blocking layer in the middle of low smoke and zero halogen inner sheath outer cladding between inside and outside flame retardant coating; Described low smoke and zero halogen inner/outer sheath adds Halogen height expandable flame retardant smoke suppressant by fire retardant polyolefin base-material and makes; Described inside and outside flame retardant coating is fire-resistant reaches 1200 DEG C-1500 DEG C, and meets the light transmittance requirement being greater than 60%.
2., by flame-retardant optical cable according to claim 1, it is characterized in that described cable core is layer-twisted type cable core or central beam tube type cable core.
3. by flame-retardant optical cable according to claim 2, it is characterized in that described layer-twisted type cable core includes central reinforce member, central reinforce member periphery is stranded Loose tube, is laid with fiber unit in Loose tube, and described fiber unit is optical fiber, fibre bundle or fibre ribbon.
4., by flame-retardant optical cable according to claim 3, it is characterized in that described water-blocking component is the fine cream that blocks water containing water-blocking component in described Loose tube, or water blocking yarn or water-proofing powder, form half dry type or Full dry type layer twisting formula cable core respectively.
5., by flame-retardant optical cable according to claim 2, it is characterized in that described central beam tube type cable core comprises center sleeve, in center sleeve, be laid with fiber unit and water-blocking component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310018163.8A CN103064163B (en) | 2013-01-18 | 2013-01-18 | Flame-retardant and fire-resistant optical cable |
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| CN201310018163.8A CN103064163B (en) | 2013-01-18 | 2013-01-18 | Flame-retardant and fire-resistant optical cable |
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| CN103064163A CN103064163A (en) | 2013-04-24 |
| CN103064163B true CN103064163B (en) | 2015-06-17 |
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| US9459423B2 (en) * | 2013-11-12 | 2016-10-04 | Corning Cable Systems Llc | Fire resistant optical communication cable using ceramic-forming fibers |
| CA2995237A1 (en) * | 2015-08-11 | 2017-02-16 | Corning Optical Communications LLC | Optical fiber cable |
| CN105223666A (en) * | 2015-10-12 | 2016-01-06 | 中天科技装备电缆有限公司 | The fire-retardant water-fast flame cable of a kind of radioresistance |
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| CN106019502A (en) * | 2016-06-13 | 2016-10-12 | 江苏通光信息有限公司 | Fire-resistant high-flame retardant optical cable |
| CA3028380A1 (en) | 2016-06-23 | 2017-12-28 | Corning Optical Communications LLC | Fire retardant optical fiber cable |
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| US10527808B2 (en) * | 2017-05-30 | 2020-01-07 | Sterlite Technologies Limited | Flame retardant optical fiber cable |
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| CN212723479U (en) * | 2020-08-12 | 2021-03-16 | 烽火通信科技股份有限公司 | Full-dry type nonmetal flame-retardant fire-resistant optical cable |
| CN112255747A (en) * | 2020-11-16 | 2021-01-22 | 江苏亨通光电股份有限公司 | Full-dry type flame-retardant optical cable and forming method thereof |
| CN112466531A (en) * | 2020-11-27 | 2021-03-09 | 安徽长荣光纤光缆科技有限公司 | High-strength anti-torsion flame-retardant optical cable |
| CN112558250A (en) * | 2020-12-22 | 2021-03-26 | 通鼎互联信息股份有限公司 | Preparation process of full-dry optical cable |
| CN112415696B (en) * | 2020-12-29 | 2022-10-04 | 东莞市特旺通信科技有限公司 | Water-blocking high-temperature-resistant irradiation-resistant multi-core optical cable and preparation method thereof |
| CN113376776A (en) * | 2021-05-11 | 2021-09-10 | 浙江东通光网物联科技有限公司 | 5G-used optical cable with ultra-large core number |
| CN113568119B (en) * | 2021-07-14 | 2023-04-07 | 烽火通信科技股份有限公司 | Dry-type all-dielectric fire-resistant optical cable and manufacturing method thereof |
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| CN103064163A (en) | 2013-04-24 |
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Address after: 430073 Hubei city of Wuhan province Wuchang two Guanshan Road No. four Applicant after: Yangtze Optical Fibre and Cable Co., Ltd Address before: 430073 Hubei city of Wuhan province Wuchang two Guanshan Road No. four Applicant before: Changfei Fibre-Optical & Optical Cable Co., Ltd. |
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