CN103792634A - Aramid fibrous composite optical cable enhancing core containing flexible coating layer and preparing method thereof - Google Patents
Aramid fibrous composite optical cable enhancing core containing flexible coating layer and preparing method thereof Download PDFInfo
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- CN103792634A CN103792634A CN201410032438.8A CN201410032438A CN103792634A CN 103792634 A CN103792634 A CN 103792634A CN 201410032438 A CN201410032438 A CN 201410032438A CN 103792634 A CN103792634 A CN 103792634A
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Abstract
An aramid fibrous composite optical cable enhancing core containing a flexible coating layer is composed of an aramid fiber rod core portion, a matrix resin layer and the flexible coating layer. The aramid fiber rod core portion is formed by aramid fibers and matrix resin in a cross bonding solidified mode. Preparation of an aramid fiber composite core material and surface flexible layer coating are accomplished at a time, high temperature and high pressure are not needed, the technical process is green and safe, the prepared enhanced core is light, the surface smoothness is good, due to the introduction of the flexible coating layer and the adoption of multi-section solidification, the toughness of the enhancing core is improved, and various physical and chemical property tests show that the bending strength can be improved by up to 20%, and the bending-resistant radius can be reduced by up to 30%.
Description
Technical field
What the present invention relates to is that a kind of optical cable non-metallic fibers strengthens core, and particularly a kind of aramid fiber that scribbles flexible coat strengthens core and preparation method thereof.
Background technology
Along with scientific and technical progress, optical cable has entered into all trades and professions.It is the critical elements of communications optical cable that optical cable strengthens core, and traditional strengthening core is take phosphatization steel wire as main.Under humid air, hardware corrosion and biochemical corrosion can produce liberation of hydrogen, affect the transfer function of signal.In addition, processing cost when steel wire and optical fiber are prepared into optical cable is higher, and mechanics, decay resistance are all stable not.In recent years, non-metallic optical fiber cables center reinforcement starts progressively to apply and popularize, and compared with conventional phosphatizing steel wire strengthening core, fibre reinforced composites optical cable strengthens core and has the advantages that quality is light, corrosion-resistant, pulling strengrth is high.
At present, the composite bar that non-metallic optical fiber cables central reinforce member mainly adopts glass fibre or aramid fiber to strengthen, wherein aramid fiber reinforced composite optical cable strengthens core because of its lower density, better break resistance, becomes the good substitute products of phosphatization steel wire optical cable enhancing core.But the prepared optical cable of aramid fiber reinforced composite strengthens that core still exists that toughness is poor, the problem such as bright and clean, bending resistance radius is larger is owed on surface.The method solving the problems of the technologies described above at present mainly adopts injection moulding extrusion method at aramid fiber reinforced composite bar surface parcel layer of polyethylene sheath, this method can obtain the aramid fiber reinforced composite bar of any surface finish, but extruding workshop section, the injection moulding increasing significantly increases the process complexity of composite material optical cable enhancing core, and this process needs High Temperature High Pressure, power consumption is large, still promotes limited and strengthen core toughness.
Poor for overcoming existing aramid fiber composite material enhancing core toughness, bright and clean deficiency is owed on surface, the invention provides the preparation method that a kind of aramid fiber reinforced composite optical cable containing flexible coat strengthens core, the method adopts impregnation twice, four sections of curing process, the preparation of aramid fiber reinforced composite core and the coating of surface flexible layer are once completed, without High Temperature High Pressure, technological process green safety, prepared enhancing core is not only lightweight, surface smoothness is good, because strengthening core toughness, the introducing of flexible coat improves, bending radius declines, whole process has further reduced the production cost that strengthens core.
Summary of the invention
The object of the invention is to, provide a kind of aramid fiber reinforced composite optical cable containing flexible coat to strengthen core and preparation method thereof.
Technical solution of the present invention is as follows: a kind of aramid fiber reinforced composite optical cable containing flexible coat strengthens core, and the described aramid fiber containing flexible coat strengthens core and is made up of aramid fiber bar core, matrix resin layers and flexible coat.
Described aramid fiber bar core is that aramid fiber and matrix resin crosslinking curing form.
Described matrix resin layers is one or more curing the forming in vinylite, epoxy resin or bimaleimide resin.
Described flexible coat is polyvinyl acetate (PVA).
The diameter that the described aramid fiber reinforced composite optical cable containing flexible coat strengthens core is 0.18mm – 6mm;
Described flexible coat thickness is 0.05mm – 2mm;
Described a kind of aramid fiber reinforced composite optical cable containing flexible coat strengthens preparation method's (non-plastic technique) of core, adopts the pultrusion method that contains twice impregnation, four sections of curing process steps to make, and comprises the steps:
1) impregnation for the first time: aramid fiber yarn is fully infiltrated with matrix resin in the first glue groove;
2) first paragraph solidify: will be soaked with matrix resin aramid fiber yarn add through mould duct hot extrusion solidify;
3) second segment solidifies: described step 2) must again solidify through drying tunnel heating again by product;
4) impregnation for the second time: described step 3) obtains product and infiltrates with polyvinyl acetate emulsion in the second glue groove;
5) the 3rd section solidifies: described step 4) obtains product and is heating and curing through the plastic squeeze of mould duct;
6) the 4th section solidifies: described step 5) obtains product and completes solidifying of flexible coat through hot blast drying tunnel again.
7) described step 6) product air cooling after, can obtain aramid fiber reinforced composite optical cable and strengthen the rolling of core finished product.
First paragraph solidifies 135 ± 10 ℃ of heating-up temperatures, and second segment solidifies: through drying tunnel or post-heater (5) heating-up temperature higher than first paragraph temperature 30-50 ℃; Matrix resin layers is selected vinylite, epoxy resin or not slightly difference of simultaneous temperature of bimaleimide resin; The 3rd section solidifies: after impregnation, through Glue Squeezing device (7), through 95 ± 10 ℃ of the heating-up temperatures of mould (8), the 4th section solidify 110 ± 10 ℃ of the 3rd section of curing post-heater (9) heating-up temperatures.
Beneficial effect of the present invention: the preparation of aramid fiber reinforced composite core and surface flexible layer apply and once complete, without High Temperature High Pressure, technological process green safety, prepared enhancing core is lightweight, surface smoothness is good, due to the introducing of flexible coat and adopt multistage to solidify the toughness that strengthens core is improved, through every physicochemical property test, bending strength improves can reach 20%, and bending resistance radius declines can reach 30%.Than existing plastic technique, the aramid fiber reinforced composite optical cable containing flexible coat of the present invention strengthens core its preparation method, and is continuous processing method, and power consumption reduces 70%, and cost of products significantly declines.
Accompanying drawing explanation:
Fig. 1 is that a kind of aramid fiber reinforced composite optical cable containing flexible coat of the present invention strengthens core one-piece construction xsect.
Fig. 2 is that a kind of aramid fiber reinforced composite optical cable containing flexible coat of the present invention strengthens core preparation method process flow diagram.
Embodiment:
In Fig. 1, aramid fiber core (resin compounded bar core) 1, matrix resin layers 11, flexible coat 12.
In Fig. 2, aramid fiber (1), Resin bath (2), Glue Squeezing device (3), mould (4), post-heater (5), coating agent hopper (6), Glue Squeezing device (7), mould (8), post-heater (9), travelling belt (10).
Embodiment 1: shown in Fig. 2, select Dupont K293000D Kevlar aramid fiber as aramid fiber core (1), through Resin bath (2), in Resin bath, put into unsaturated polyester (magnificent prosperous polymkeric substance 9407SP resin), Glue Squeezing device (3), through mould (4), mould aperture 0.90mm, 135 ℃ of heating-up temperatures, again by 180 ℃ of post-heater (5), heating-up temperatures, after curling to it, enter coating agent hopper impregnation again, the coating emulsion in hopper is made by the polymerization of filling a prescription as follows:
After impregnation, through Glue Squeezing device (7), pass mould (8), mould aperture 0.98mm, 95 ℃ of heating-up temperatures, pass through again post-heater (9), 110 ℃ of heating-up temperatures, after rolling, obtaining diameter is the enhancing of the aramid fiber reinforced composite optical cable containing the flexible coat core of 0.96-0.99mm.
Embodiment 2: one-piece construction is with embodiment 1, and different is to change the formula applying, and heightens coating viscosity, reduces solid content, and concrete formula is as follows:
Obtaining diameter is the enhancing of the aramid fiber reinforced composite optical cable containing the flexible coat core of 0.97-1.00mm.
Embodiment 3: shown in Fig. 2, select Dupont K291500D Kevlar aramid fiber through Resin bath (2), in Resin bath, put into unsaturated polyester (magnificent prosperous polymkeric substance 9407SP resin), Glue Squeezing device (3), through mould (4), mould aperture 0.45mm, 135 ℃ of heating-up temperatures, then by 180 ℃ of post-heaters (5), heating-up temperature, curling to it after, enter coating agent hopper impregnation again, the coating emulsion in hopper is made by the polymerization of filling a prescription as follows:
After impregnation, through Glue Squeezing device (7), pass mould (8), mould aperture 0.49mm, 95 ℃ of heating-up temperatures, pass through again post-heater (9), 110 ℃ of heating-up temperatures, after rolling, obtaining diameter is the enhancing of the aramid fiber reinforced composite optical cable containing the flexible coat core of 0.47-0.50mm.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. strengthen a core containing the aramid fiber reinforced composite optical cable of flexible coat, it is characterized in that: the described aramid fiber containing flexible coat strengthens core and is made up of aramid fiber bar core, matrix resin layers and flexible coat.
2. the aramid fiber optical cable containing flexible coat according to claim 1 strengthens core, it is characterized in that, described aramid fiber bar core is that aramid fiber and matrix resin crosslinking curing form.
3. the aramid fiber optical cable containing flexible coat according to claim 1 strengthens core, it is characterized in that, described matrix resin layers is one or more curing the forming in vinylite, epoxy resin or bimaleimide resin.
4. the aramid fiber optical cable containing flexible coat according to claim 1 strengthens core, it is characterized in that, described flexible coat is polyvinyl acetate (PVA).
5. the aramid fiber optical cable containing flexible coat according to claim 1 strengthens core, it is characterized in that, the diameter that the described aramid fiber containing flexible coat strengthens core is 0.18mm – 6mm.
6. the aramid fiber optical cable containing flexible coat according to claim 1 strengthens core, it is characterized in that, described flexible coat thickness is 0.05mm – 2mm.
7. the preparation method of the enhancing of the aramid fiber reinforced composite optical cable containing a flexible coat core, it is characterized in that, for non-plastic technique, adopt the pultrusion method that contains twice impregnation, four sections of curing process steps to make, described preparation method comprises the steps:
1) impregnation for the first time: aramid fiber yarn is fully infiltrated with matrix resin in the first glue groove;
2) first paragraph solidify: will be soaked with matrix resin aramid fiber yarn add through mould duct hot extrusion solidify;
3) second segment solidifies: described step 2) in product again solidify through drying tunnel heating again;
4) impregnation for the second time: in described step 3), product infiltrates with polyvinyl acetate emulsion in the second glue groove;
5) the 3rd section solidifies: in described step 4), product is heating and curing through the plastic squeeze of mould duct;
6) the 4th section solidifies: in described step 5), product completes solidifying of flexible coat through hot blast drying tunnel again.
7) described step 6) product air cooling after, can obtain finished product rolling.
8. the aramid fiber reinforced composite optical cable containing flexible coat according to claim 7 strengthens the preparation method of core, it is characterized in that, first paragraph solidifies 135 ± 10 ℃ of heating-up temperatures, and second segment solidifies: through drying tunnel or post-heater (5) heating-up temperature higher than first paragraph temperature 30-50 ℃; The 3rd section solidifies: after impregnation, through Glue Squeezing device (7), through 95 ± 10 ℃ of the heating-up temperatures of mould (8), the 4th section solidify 110 ± 10 ℃ of the 3rd section of curing post-heater (9) heating-up temperatures.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104313704A (en) * | 2014-09-29 | 2015-01-28 | 中鸿纳米纤维技术丹阳有限公司 | Novel supply coating mechanism of nanofiber electrostatic spinning machine |
| CN105038220A (en) * | 2015-06-23 | 2015-11-11 | 南通和泰通讯器材有限公司 | High-toughness aramid composite material optical fiber reinforced core and preparation method thereof |
| CN106896459A (en) * | 2017-03-21 | 2017-06-27 | 海安南京大学高新技术研究院 | Selfreparing optical cable enhancing core containing microcapsules and preparation method thereof |
| CN112095250A (en) * | 2020-07-24 | 2020-12-18 | 福建创立佳科技有限公司 | Preparation method of aramid fiber composite core |
| CN114637086A (en) * | 2022-03-16 | 2022-06-17 | 杭州巨力绝缘材料有限公司 | Ultra-high strength optical cable reinforced core and manufacturing method thereof |
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| CN101546018A (en) * | 2009-01-16 | 2009-09-30 | 苏州大学 | Aromatic polyamide optical cable reinforcing core and photo-curing production method |
| WO2013048097A2 (en) * | 2011-09-30 | 2013-04-04 | 코오롱인더스트리 주식회사 | Aramid fiber cord, and preparation method thereof |
| CN103407176A (en) * | 2013-08-21 | 2013-11-27 | 上海会博新材料科技有限公司 | Manufacturing method of optical cable strengthening piece |
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| CN1690749A (en) * | 2004-04-21 | 2005-11-02 | 上海晓宝增强塑料厂 | Aramid fiber reinforced core for optical cable |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104313704A (en) * | 2014-09-29 | 2015-01-28 | 中鸿纳米纤维技术丹阳有限公司 | Novel supply coating mechanism of nanofiber electrostatic spinning machine |
| CN105038220A (en) * | 2015-06-23 | 2015-11-11 | 南通和泰通讯器材有限公司 | High-toughness aramid composite material optical fiber reinforced core and preparation method thereof |
| CN106896459A (en) * | 2017-03-21 | 2017-06-27 | 海安南京大学高新技术研究院 | Selfreparing optical cable enhancing core containing microcapsules and preparation method thereof |
| CN112095250A (en) * | 2020-07-24 | 2020-12-18 | 福建创立佳科技有限公司 | Preparation method of aramid fiber composite core |
| CN114637086A (en) * | 2022-03-16 | 2022-06-17 | 杭州巨力绝缘材料有限公司 | Ultra-high strength optical cable reinforced core and manufacturing method thereof |
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Effective date of registration: 20180717 Address after: 226600 No. 308 Tan Tan Road, Haian high tech Zone, Nantong, Jiangsu Patentee after: The sea of Jiangsu new materials Co. Ltd. Address before: 226600 the Yellow River West Road, Haian, Nantong, Jiangsu Province, No. 69 Patentee before: HAIAN INSTITUTE OF HIGH-TECH RESEARCH, NANJING UNIVERSITY |
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