CN105385000A - Optical fiber cable sheath composite material and preparation method thereof, optical fiber cable sheath and optical fiber cable - Google Patents
Optical fiber cable sheath composite material and preparation method thereof, optical fiber cable sheath and optical fiber cable Download PDFInfo
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- CN105385000A CN105385000A CN201410446294.0A CN201410446294A CN105385000A CN 105385000 A CN105385000 A CN 105385000A CN 201410446294 A CN201410446294 A CN 201410446294A CN 105385000 A CN105385000 A CN 105385000A
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Abstract
The present invention discloses an optical fiber cable sheath composite material and a preparation method thereof, an optical fiber cable sheath and an optical fiber cable. The optical fiber cable sheath composite material is characterized by comprising, by weight, 90-98% of polyethylene, 1-10% of glass beads, and 0.1-8% of an additive. According to the present invention, the glass beads are used so as to reduce the raw material cost of the composite material by 4%, and the glass beads can effectively improve the flowability of the polyethylene material, particularly the flowability of the recovered polyethylene material, and can flexibly adjust the density of the composite material according to different used materials so as to meet the specific requirements of the optical fiber cable sheath material manufacturing and the optical fiber cable manufacturing.
Description
Technical field
The present invention relates to a kind of cable jacket matrix material and preparation method thereof and cable jacket and optical cable.
Background technology
For protection optical cable, outside cable core, must cable jacket be set.Along with the penetration and promotion on a large scale of optical cable, the demand of Cable jacket materials improves day by day.But because cable jacket is in the specific requirement of manufacturing processed and environment for use, in conventional cable sheath, the cost of polythene material is relatively high, causes optical cable holistic cost higher.So it is relatively low to be starved of a kind of cost, and the matrix material of cable jacket manufacturing processed and the specific requirement of cable jacket environment for use can be met, thus reduce the cost of cable jacket, and ensure the quality of optical cable.
Summary of the invention
An object of the present invention is to overcome deficiency of the prior art, provides a kind of matrix material reducing Cable jacket materials cost.
For realizing above object, the present invention is achieved through the following technical solutions:
Cable jacket matrix material, is characterized in that comprising:
Polyethylene, granulated glass sphere and additive;
Comprise according to weight percentage, polyethylene 90%-98%; Granulated glass sphere 1%-10%, additive 0.1%-8%.
Preferably, described additive comprises the oxidation inhibitor of 0.1%-1% according to weight percent, the ultraviolet opalizer of 1%-5%, the silane of 0.1%-1%, one or more in the lubricant of 0.1%-1%.
Preferably: the molal weight of described lubricant is 9000-3000g/mol.
Preferably, the molal weight of described lubricant is 1000-2000g/mol.
Preferably, described lubricant comprises one or more in polyethylene wax, vinyl acetate between to for plastic wax, vinylformic acid wax, toxilic acid grafted polyethylene wax.
Compare the lubricant of low mole (100-900g/mol), due to the mutual entanglement effect between molecular chain, this type additive more not easily moves to a mouthful mould place in extrusion, thus reduces the buildup at die head place, can avoid the inhomogenous problem of cable outer diameter in extrusion; High molar lubricant simultaneously, better with the consistency of polyethylene molecular chain, can reduce in extrusion, internal friction between macromolecular chain, thus be conducive to homogeneity and the stability of melt extrusion, be conducive to the improvement of cable outer diameter dimensional stability and the raising of jacket surface quality.
Preferably, described silane comprises one or more in A-174, A-171, A-151, A-172NT, A-2171, RC-1.
Preferably, described oxidation inhibitor comprises one or more in oxidation inhibitor 215, oxidation inhibitor 225, antioxidant 1010, irgasfos 168, phosphite antioxidant.
Preferably, described ultraviolet opalizer is carbon black.
Preferably, described granulated glass sphere particle diameter is 10-250 μm.
Preferably, described granulated glass sphere is hollow glass bead.
Preferably, the density of described granulated glass sphere is 0.1-0.9g/cm
3.
Preferably, described granulated glass sphere lateral pressure resistant value is 6000psi or more than 6000psi.
Preferably, described polyethylene is one or both in not used polyethylene and recycle polyethylene material.
Preferably, described polyethylene comprises one or more in Low Density Polyethylene, linear low density polyethylene, medium-density polyethylene and high density polyethylene(HDPE)
Preferably, the density of described recycle polyethylene material is 0.90-0.98g/cm
3.
Preferably, described poly stretch ratio is 2.0-5.0.
Preferably, the density of described matrix material is 0.940-0.978g/cm
3.
Preferably, described matrix material uses twin screw extruder, makes through extruding blending technology.
An object of the present invention is to overcome deficiency of the prior art, provides a kind of preparation method reducing the cable jacket matrix material of Cable jacket materials cost.
For realizing above object, the present invention is achieved through the following technical solutions:
The preparation method of aforesaid cable jacket matrix material, is characterized in that, comprise step: each raw material mixes by (1); (2) by mixed each feedstock transportation to forcing machine; (3) by forcing machine by each raw material blending extrusion.
Preferably, also step is comprised: each raw material is extruded with strip by (4); (5) cool; (6) granulation.
Preferably, described forcing machine is twin screw extruder.
An object of the present invention is to overcome deficiency of the prior art, provides a kind of cable jacket reduced costs.
For realizing above object, the present invention is achieved through the following technical solutions:
Cable jacket, is characterized in that, is made up of aforesaid cable jacket matrix material.
An object of the present invention is to overcome deficiency of the prior art, provides a kind of optical cable reduced costs.
For realizing above object, the present invention is achieved through the following technical solutions:
Optical cable, comprise Cable Core and the cable jacket being trapped among Cable Core periphery, it is characterized in that, described cable jacket adopts aforesaid cable jacket matrix material to make.
Using polyethylene in the present invention, can be medium-density polyethylene, also can be high density polyethylene(HDPE); And can be polyethylene reclaimed materials, material grade can be extrusion grade, injection stage or wire drawing level simultaneously.
" matrix material " in the present invention refers to the material of " polyethylene material " and the mixing of other compositions." recycle polyethylene material " described in the present invention refers to, take polyethylene as main raw material(s), made concrete plastic prod, no matter whether these plastic prods used, also no matter what field these polyethylene products are uses, and is all " the recycle polyethylene material " described in the present invention.In described polyethylene product, both can be add auxiliary agent as matrix separately using polyvinyl resin to produce; Also can be polyethylene and other organism jointly as matrix, add auxiliary agent and produce.When polyethylene and other organism are jointly as matrix, and no matter whether polyethylene and other organism there is chemical reaction, both can be polyethylene with other organic resins mix for physically for the production of, also can be the matrix that polyethylene and other organic resins react with chemical copolymerization and produce.In the raw material of these polyethylene products, poly weight percentage is usually more than 90%.Such as, vinyon bottle, as long as its main component is polythene material, it has made vinyon bottle, no matter these vinyon bottles use after a while, or brand-new not use, all can as " recycle polyethylene material " of the present invention.May be used for recycle polyethylene material of the present invention to include but not limited to: vinyon bottle, polyethylene bottle cap, polyethylene film, cable pe sheath, polyvinyl piping materials etc.Described polyethylene product both can be used alone, also can be used in combination.
Use recycle polyethylene material to manufacture the manufacturing cost that cable jacket can reduce optical cable, but the recycle polyethylene material of different sources has different characteristics, the density such as reclaiming cable sheath is 0.940-0.950g/cm
3, the density reclaiming bottle cap is 0.950-0.960g/cm
3, and the density of awning film is 0.950-0.978g/cm
3.The recycle polyethylene material mixing of different sources is used together and can produce some problems.Such as, the service performance of mixed recycle polyethylene material is wayward; And, because recycle polyethylene properties of materials, in optical cable production process, easily produce the uneven of cable outer diameter.So be starved of a kind of effective use recycle polyethylene material to manufacture matrix material and the method for cable jacket, thus reduce the cost of cable jacket, and ensure the quality of optical cable.
Use granulated glass sphere both can reduce material cost, in the present invention, use granulated glass sphere raw materials cost to reduce by 4%.Granulated glass sphere effectively can improve the mobility of polythene material, especially the mobility of recycle polyethylene material material can be improved, and can according to the differing materials used, regulate the density of " matrix material " flexibly, to meet specific requirement that is that manufacture Cable jacket materials and that meet manufacture optical cable.The granulated glass sphere that the present invention uses, can reduce the frictional force between long chain molecule, thus can reduce the consumption of auxiliary agent.The consumption of lubricant can be reduced to 0.3% from 1%.Reduce the consumption of auxiliary agent, thus reduce the risk of auxiliary agent reunion.
Using polyethylene in the present invention, can be one or more in Low Density Polyethylene, linear low density polyethylene, medium-density polyethylene and high density polyethylene(HDPE).And can be recycle polyethylene material, material grade can be extrusion grade, injection stage or wire drawing level simultaneously, and raw material sources are extensive.
Accompanying drawing explanation
Fig. 1 is the cable configuration schematic diagram in the present invention.
Fig. 2 is matrix material production equipment schematic diagram in the present invention.
Fig. 3 is the machine barrel internal structure side-view in the twin screw extruder used in the present invention.
Embodiment
The optical cable (or other products) using vinyon to manufacture uses expressing technique, and can relate to twice expressing technique, namely first time polyethylene extrusion plastic granulating, be the material of the overcoat manufacturing optical cable; Second time is extruded and is formed the overcoat of optical cable, and is wrapped up in by the overcoat of optical cable in extrusion and be attached to around optical cable components, forms optical cable.In the expressing technique of twice, the mobility of material is important performance index.Suitable mobility is not only related to that can production technique carry out, and be also related to that can produce continuous, smooth and easy, can material make product completely.
In actual life, there is a large amount of vinyon products, as vinyon bottle, polyethylene bottle cap, polyethylene film, cable pe sheath, polyvinyl piping materials etc.Because these vinyon products are in the past through expressing technique machine-shaping, and after use after a while, reuse expressing technique very large to the difficulty of processing cable jacket (or other products).Why recycle polyethylene plastics are difficult to reprocessing recycling to manufacture optical cable, and major cause is poor fluidity.One of reason is that various recycle polyethylene product property differs greatly, and the density such as reclaiming cable sheath is 0.940-0.950g/cm
3, the density reclaiming bottle cap is 0.950-0.960g/cm
3, and the density of awning film is 0.950-0.978g/cm
3; Polyethylene insulated cable sheath material is extrusion grade; Polyethylene bottle cap is injection grade; Awning film is wire drawing level.By different sources together with the recycle polyethylene material mixing of characteristic, the service performance of mixed recycle polyethylene material is wayward.And, because recycle polyethylene properties of materials, in optical cable production process, easily produce the uneven of cable outer diameter.When another one reason is the recycle polyethylene material Product mix when number of different types, its mobility can decline.Due to plastic prod, if cable jacket is produced by expressing technique, therefore, the not good production that will have a strong impact on cable jacket (or other products) of mobility.Mobility is not good in addition, both can affect the dispersion of each processing aid, causes dispersion uneven; Also can cause the die orifice buildup of forcing machine, affect carrying out continuously of production technique, also can affect the utilization ratio of material.
For cable sheath product, in national standard, formulated the index value of its each side, cable jacket in use, its need meet following mechanics, heat-resisting and fast light in index:
Can find out there is special achievement data to the proportion of sheath material from above national standard, for medium-density polyethylene composite density is: 0.940-955g/cm
3; High-density polyethylene composite material density is: 0.955-0.978g/cm
3.Multiple different polyethylene product, its proportion is also different, can meet the regulation to the proportion of Cable jacket materials in national standard after how making the polythene material in multiple source mix, contriver proposes technical scheme of the present invention after this has been large quantity research and experiment.Contriver finds through research, granulated glass sphere is added in polythene material, both material cost can be reduced, the mobility of polythene material can be increased again, when especially using the polyethylene product of recovery, polytype polyethylene product to mix, use granulated glass sphere significantly can improve the mobility of polythene material, the processing request of expressing technique can be met.In addition, use granulated glass sphere can also regulate the proportion of polythene material, especially hollow glass bead, can make the proportion of the finished product meet the regulation of national standard.Such as, use the granulated glass sphere that density is less, can directly by high-density polyethylene material furnishing medium-density polyethylene material, and do not need to use high-density polyethylene material and medium-density polyethylene combines or the array mode of high-density polyethylene material and Low Density Polyethylene to adjust the density of product.When using recycle polyethylene material, use granulated glass sphere to be even more important, because recycle polyethylene material wide material sources, and the density of often kind of reclaimed materials is inconsistent.Use can adjust the additive of density, as granulated glass sphere, the density of product can be transferred to the numerical value meeting service requirements easily.
In addition, use granulated glass sphere, can also material cost be reduced.Tool is used to the recycle polyethylene material of different sources, produce the cable material having different densities requirement, different hollow glass bead can be used to regulate the density of matrix material, and formula is as follows:
(1) part by weight+poly part by weight of poly density x of the density x granulated glass sphere of the density=granulated glass sphere of matrix material.
Go up formula (1) according to this, therefore, the present invention, by the part by weight of the density and granulated glass sphere (hollow glass bead) of suitably selecting granulated glass sphere, to the recycle polyethylene matrix material of different densities, can obtain the density of suitable composite polyethylene material.
In addition, in matrix material of the present invention, the molal weight of lubricant is higher, such as 900-3000g/mol; Preferred 1000-2000g/mol.Compare the silane of low mole (100-900g/mol), due to the mutual entanglement effect between molecular chain, this type additive more not easily moves to a mouthful mould place in extrusion, thus reduces the buildup at die head place, can avoid the inhomogenous problem of cable outer diameter in extrusion; High molar silane simultaneously, better with the consistency of polyethylene molecular chain, can reduce in extrusion, the internal friction between macromolecular chain, thus be conducive to homogeneity and the stability of melt extrusion, be conducive to the improvement of cable outer diameter dimensional stability and the raising of jacket surface quality.
The use of granulated glass sphere can reduce by additive cause polyethylene melt and and mouth mould between friction, to reduce the consumption of additive especially lubricant, thus reduce the buildup phenomenon in matrix material extrusion.
Contriver is also found by research, although granulated glass sphere can improve poly mobility, granulated glass sphere will be dispersed in polythene material and have difficulties, and especially will be dispersed in multiple recycle polyethylene material more difficult.Therefore, using suitable auxiliary agent to be dispersed in polythene material for granulated glass sphere, is especially helpful in recycle polyethylene material material.Contriver finds through research, experiment, uses silane and lubricant to contribute to granulated glass sphere and is dispersed in recycle polyethylene material material.Silane can the trade mark as A-174.In addition, and not all polyethylene wax all can produce the effect of optimization.Contriver finds through research, experiment, after the molal weight lubricant reached between 800-3000g/mol adds, can lubricate granulated glass sphere, make it be dispersed in recycle polyethylene material material.
Contriver also finds through research, experiment, except using suitable auxiliary agent, uses suitable complete processing to have further help by the dispersed of granulated glass sphere, and at traditional expressing technique, people are with the granulation of single screw extrusion machine polythene material.But contriver finds through research, and the shearing force of single screw extrusion machine is less, can do nothing to help granulated glass sphere and is dispersed in polythene material.And in the present invention, use twin screw extruder to extrude.The shearing force of twin screw extruder is greater than single screw extrusion machine, therefore, in twin-screw extruder extrusion process, granulated glass sphere can be made to disperse more equably.
Granulated glass sphere dispersing uniformity: be under the opticmicroscope of 200 in magnification, the composite polyethylene material observing film-making (on PE matrix material placement slide glass, and is pushed down with cover glass, put into the baking oven of 200 DEG C, 3-10min, rear taking-up), reunite without obvious glass particle.
When using existing protecting sleeve of optical cable to produce cable jacket, contriver finds, if use traditional material, in extrusion process, there will be buildup phenomenon at die orifice.These buildups enter along with the carrying out of expressing technique in cable jacket sometimes, cause cable jacket external diameter increase or occur the surface imperfection such as projection; Then can block die orifice time serious, cause producing and interrupt, just can continue after cleaning to produce completely.Contriver studies discovery further, occur the reason of die orifice buildup be due to the transport property of auxiliary agent improper caused by.The die orifice buildup that agents migrate causes, the cable jacket external diameter caused fluctuation is reached for 5%, occurs that the ratio of the surface imperfection of projection is 2%.Contriver is found by large quantity research, experiment, uses proper lubrication agent can reduce the migration of auxiliary agent, avoids the problem caused by agents migrate.Select molal weight to be the lubricant of 800-3000g/mol, the target reducing agents migrate can be reached.Use the cable jacket that the matrix material in the present invention is produced, outside dimension is unified, does not occur that external diameter fluctuates; There is not the surface imperfection such as projection yet.
In addition, in extrusion, the degraded of polythene material is recurrent phenomenon.Owing to melt extruding under needs high temperature, in extrusion, due to the shearing action of screw rod, its molecular chain can chain rupture, and simultaneously with the dioxygen oxidation effect in air, the molecule of fracture can the molecule odorous such as oxidized generation acid, aldehyde, ketone, quinone, alkane.Palliating degradation degree, be generally see that extrusion has non-irritating peculiar smell, pungency peculiar smell is stronger, degrades more severe.
The present invention adopts Suitable formulations, selects suitable oxidation inhibitor and lubricant, can avoid the generation of degrading.Oxidation inhibitor; The molecular chain free radical produced in extrusion can be caught, avoid molecule chain break, thus reduce the oxidized risk of molecule.High molar lubricant, can reduce intermolecular internal friction, improves mobility and the homogeneity of melt, thus the risk that reduction molecule is destroyed by threaded rod shear shear force.That can reduce melt extrudes viscosity simultaneously, thus reduces screw rod to melt Strong shear, reduces the destruction to molecular melt chain.
Be illustrated in figure 1 the structural section schematic diagram of a kind of optical cable using matrix material of the present invention to manufacture.Optical cable 10, the sheath 11 comprising cable core 12 and be coated on outside cable core 12.Cable core 12 is arranged in sheath 11.Single or multiple sleeve pipe 13 is provided with in every root cable core 12.In example as shown in Figure 1, four sleeve pipes 13 link in cable core 12.Six roots of sensation optical fiber 14 is provided with in each sleeve pipe 13.In cable core 12, be also provided with skeleton core 15 and steel band 16.Figure 1 shows that optical cable wherein a kind of structure, not only structure.Protecting sleeve of optical cable in the present invention is applicable to various optical cable.
Take photocon as optical fiber be example, the production process of optical cable generally includes following steps:
1. optical fiber 14 surface-coated coloring printing ink (ink protection optical fiber);
2. combination of fiber-optic 14 (6 or 12 etc.) squeezes and overlays in sleeve pipe 13;
3. sleeve pipe 13 twists technique by layer, assembled casing 13 (6 or 12 etc.) is pricked yarn by polyester, bundles;
4. the cable core 11 after binding is carried continuously.By twin screw extruder, matrix material is melt extruded, and through die head, the matrix material of the present invention of melting is squeezed cable core 11 surface overlaying on continus convergence, shaping through cooling trough cooling after fixing, to form cable jacket.
Fig. 2 and the structural representation that Figure 3 shows that the production equipment that the present invention uses.As shown in Figures 2 and 3, twin screw extruder 20 comprises two screw rods 21 and machine barrel 22.Two screw rods 21 are juxtaposed in the cylinder chamber 23 of machine barrel 22.In production equipment as shown in Figure 2, after polythene material chopping, mix in stirring mixer 30, then deliver in the machine barrel 22 of twin screw extruder 20.Enter after in a chamber 23 through machine barrel 22 left end, by the rotation of two screw rods 21 to the shearing of each raw material, stirring, each raw material is fed forward, until extrude from machine barrel 22 right-hand member.According to the structure formation of mouth mould 40, sheath material can be extruded in a variety of manners, and it both can be extruded with strip, extrude with granular, also can directly extrude tubulose and be sleeved on outside cable core.Preferably, matrix material is cut to granular by the mouth mould 40 using machine barrel 22 right-hand member to arrange.When twin screw extruder is extruded, extrusion temperature is 180-200 DEG C, and screw slenderness ratio is 30-35.As a rule, the sheath material producer and user are not identical, and therefore, first sheath material will be produced with pelletized form, then be transported to and use producer, use producer to extrude as tubulose through expressing technique again by sheath material, are sleeved on outside cable core.Therefore, sheath material is often through twice expressing technique.The present invention in process of production, only use twin screw extruder extrude once can produce complete.And the sheath material in the present invention is not suitable for using single screw extrusion machine extrusion, when using single screw extrusion machine, must use two continuous extrusions of single screw extrusion machine.As when the producer is different from user, its whole process need at least three single screw extrusion machines are extruded.
Singe screw is lower due to the shearing force of its screw rod, is generally: 10
3-10
4s
-1left and right, general only for the fusion plastification of plastic material, for moulding process, matrix material blending technology can not be applicable to.And the shearing force of twin screw is comparatively large, be generally 10
4-10
5s
-1, various material component can be blended together, be applicable to the preparation technology of matrix material.
In extrusion, there is stronger threaded rod shear shear force (to be generally: 10
4-10
5s
-1), this shearing force can damage the structure of granulated glass sphere, and granulated glass sphere is cut into powdery by spherical, thus causes the inefficacy of matrix material; And this kind problem of patent of the present invention to granulated glass sphere proposes solution, done requirement to the material property of granulated glass sphere, lateral pressure resistant value, at more than 6000psi, effectively can be resisted the destruction of threaded rod shear shear force, can keep the integrity of granulated glass sphere in extrusion.Therefore, the formula of matrix material of the present invention or the production technique of the especially suitable shearing for twin screw of composition.
Below in conjunction with embodiment, the present invention is described in detail:
Embodiment 1
Matrix material, comprises following component according to weight percent:
Recycle polyethylene material 93.3%; In recycle polyethylene material, comprise 20% Polyethylene insulated cable sheath material according to weight percentage, 40% PE bottle cover and 40% awning film;
Hollow glass bead 3.5%, particle diameter 20 μm, density 0.3g/cm3;
Oxidation inhibitor 0.2%, the trade mark is 215;
Carbon black 2.6%, particle diameter 20nm;
Silane 0.2%; The trade mark is A-174;
Polyethylene wax 0.2%; Molal weight is 2000g/mol.
Embodiment 2
Cable jacket matrix material, comprises following component according to weight percent:
Recycle polyethylene material 93.75%; In recycle polyethylene material, comprise 25% Polyethylene insulated cable sheath material according to weight percentage, 45% PE bottle cover and 30% awning film.
Hollow glass bead 3.0%; Particle diameter 30 μm, density 0.4g/cm3.
Oxidation inhibitor 0.2%; The trade mark is 225.
Carbon black 2.6%; Particle diameter 30nm.
Silane 0.25%; The trade mark is A-174.
Polyethylene wax 0.2%; Molal weight is 1500g/mol.
Embodiment 3
Cable jacket matrix material, comprises following component according to weight percent:
Recycle polyethylene material 93.7%; In recycle polyethylene material, comprise 40% Polyethylene insulated cable sheath material according to weight percentage, 30% PE bottle cover and 30% awning film.
Hollow glass bead 3.0%; Particle diameter 30 μm, density 0.6g/cm3.
Oxidation inhibitor 0.2%; The trade mark is 225.
Carbon black 2.6%; Particle diameter 30nm.
Silane 0.30%; The trade mark is A-151.
Polyethylene wax 0.20%; Molal weight is 1000g/mol.
Embodiment 4
Cable jacket matrix material, comprises following component according to weight percent:
Recycle polyethylene material 94.05%; In recycle polyethylene material, comprise 30% Polyethylene insulated cable sheath material according to weight percentage, 40% PE bottle cover and 30% awning film.
Hollow glass bead 2.5%; Particle diameter 50 μm, density 0.9g/cm3.
Oxidation inhibitor 0.25%; The trade mark is 225.
Carbon black 2.6%; Particle diameter 30nm;
Silane 0.35%; The trade mark is A-174.
Vinyl acetate between to for plastic wax 0.25%; Molal weight is 1000g/mol.
Embodiment 5
Cable jacket matrix material, comprises following component according to weight percent:
Recycle polyethylene material 92.45%; In recycle polyethylene material, comprise 40% Polyethylene insulated cable sheath material according to weight percentage, 40% PE bottle cover and 20% awning film.
Hollow glass bead 4.0%; Particle diameter 10 μm, density 0.1g/cm3.
Oxidation inhibitor 0.3%; The trade mark is 1010.
Carbon black 2.6%; Particle diameter 30nm.
Silane 0.15%; The trade mark is A-2171.
Vinylformic acid wax 0.3%; Molal weight is 3000g/mol.
Embodiment 6
Cable jacket matrix material, comprises following component according to weight percent:
Recycle polyethylene material 92.6%; In recycle polyethylene material, comprise 30% Polyethylene insulated cable sheath material according to weight percentage, 30% PE bottle cover and 40% awning film.
Hollow glass bead 4.0%; Particle diameter 120 μm, density 0.5g/cm3.
Oxidation inhibitor 0.25%; The trade mark is 215.
Carbon black 2.6%; Particle diameter 30nm.
Silane 0.45%; The trade mark is A-174.
Polyethylene wax 0.30%; Molal weight is 2000g/mol.
Embodiment 7
Cable jacket matrix material, comprises following component according to weight percent:
Recycle polyethylene material 90%; Recycle polyethylene material is the polyvinyl piping materials of 50% and the awning film of 50%.
Hollow glass bead 6.2%; Particle diameter 80 μm, density 0.5g/cm3.
Oxidation inhibitor 0.25%; The trade mark is 168.
Carbon black 2.6%; Particle diameter 50nm.
Silane 0.35%; The trade mark is RC-1.
Toxilic acid grafted polyethylene wax 0.60%; Molal weight is 2500g/mol.
Embodiment 8
Cable jacket matrix material, comprises following component according to weight percent:
Recycle polyethylene material 95%; Recycle polyethylene material is agricultural polyethylene awning film.
Hollow glass bead 2.0%; Particle diameter 150 μm, density 0.3g/cm3.
Phosphite antioxidant 0.2%; .
Carbon black 2.6%; Particle diameter 60nm.
Silane 0.2%; The trade mark is RC-1.
Toxilic acid grafted polyethylene wax 0.35%; Molal weight is 3000g/mol.
Embodiment 9
Cable jacket matrix material, comprises following component according to weight percent:
Recycle polyethylene material 89%; Recycle polyethylene material is Polyethylene insulated cable sheath material.
Hollow glass bead 8.0%; Particle diameter 30 μm, density 0.7g/cm3.
Phosphite antioxidant 0.1%.
Carbon black 2.6%; Particle diameter 60nm.
Silane 0.2%; The trade mark is RC-1.
Toxilic acid grafted polyethylene wax 0.1%; Molal weight is 3000g/mol.
Embodiment 10
Cable jacket matrix material, comprises following component according to weight percent:
Recycle polyethylene material 85%; Recycle polyethylene material is Polyethylene insulated cable sheath material.
Hollow glass bead 10%; Particle diameter 50 μm, density 0.5g/cm3.
Oxidation inhibitor 0.2%; The trade mark 168.
Carbon black 2.6%; Particle diameter 60nm.
Silane 0.6%; The trade mark is RC-1.
Polyethylene wax 0.3%; Molal weight is 800g/mol.
Embodiment 11
Cable jacket matrix material, comprises following component according to weight percent:
Recycle polyethylene material 92%; Recycle polyethylene material is 60% vinyon bottle and 40% Polyethylene insulated cable sheath.
Hollow glass bead 4%; Particle diameter 20 μm, density 0.3g/cm3.
Oxidation inhibitor 0.5%; The trade mark 1010.
Carbon black 2.6%; Particle diameter 40nm.
Silane 0.8%; The trade mark is A-174.
Vinylformic acid wax 0.35%; Molal weight is 1500g/mol.
Embodiment 12
Cable jacket matrix material, comprises following component according to weight percent:
Recycle polyethylene material 92%; Recycle polyethylene material is PE bottle cover.
Hollow glass bead 3%; Particle diameter 90 μm, density 0.5g/cm3.
Oxidation inhibitor 0.5%; The trade mark 168.
Carbon black 2.6%; Particle diameter 40nm.
Silane 0.8%; The trade mark is A-174.
Vinylformic acid wax 0.35%; Molal weight is 1500g/mol.
Embodiment 13
Cable jacket matrix material, comprises following component according to weight percent:
Recycle polyethylene material 91%; Recycle polyethylene material is vinyon bottle.
Hollow glass bead 5%; Particle diameter 90 μm, density 0.5g/cm
3.
Oxidation inhibitor 0.85%; The trade mark 168.
Carbon black 2.6%; Particle diameter 40nm.
Silane 0.9%; The trade mark is A-174.
Vinylformic acid wax 0.25%; Molal weight is 1500g/mol.
In an embodiment of the present invention, when the volume of granulated glass sphere increases, because granulated glass sphere outer surface area increases, the usage quantity of silane also increases thereupon.In extrusion, one end of silane molecule chain can be grafted to the outside surface of glass microballon by " silanol reaction ", and the other end of molecular chain is understood and polyethylene molecular chain is entangled.Therefore, silane can improve the degree of scatter of glass microballon in polythene material matrix and the power that be combined with each other.
For improving silane " grafting " number on glass microballon surface, ensure enough " hydrogen is built " reactive forces, therefore when the surface-area of glass microballon increases, need corresponding " grafting " number improving surface, generally can be realized by the usage quantity increasing silane.
Material of the present invention is after twin-screw extrusion machining, and the flowing melt of formation is got to know through annular and is expressed to cable core, and shaping through tank cooling curing.
Material of the present invention is in machine-shaping process, and because glass microballon has self-lubricating effect, the internal friction between material molecule is less, have good fluidity of molten, extrusion pressure is stablized, and its cable outer diameter prepared is homogeneous, good concentricity, without bad production phenomenons such as de-material, enclosed mass; Material of the present invention simultaneously, because lubricant adopts higher molar material (polyethylene wax etc., molecular weight: 900-3000g/mol), the transport property of auxiliary agent reduces, effectively can reduce the accumulation of auxiliary agent at die orifice, avoid the fluctuation of cable outer diameter, and the generation of optical cable surface imperfection.Below the experimental data that the cable jacket matrix material in embodiment 1-6 is done:
After testing, the cable jacket matrix material of embodiment of the present invention 1-12, the cable jacket of production all meet country mechanics, heat-resisting and fast light in standard.
Embodiment in the present invention, only for the present invention will be described, does not form the restriction to right, other equivalent in fact substituting, all in scope that those skilled in that art can expect.
Claims (23)
1. cable jacket matrix material, is characterized in that comprising:
Polyethylene, granulated glass sphere and additive;
Comprise according to weight percentage, polyethylene 90%-98%; Granulated glass sphere 1%-10%, additive 0.1%-8%.
2. cable jacket matrix material according to claim 1, it is characterized in that: described additive comprises the oxidation inhibitor of 0.1%-1% according to weight percent, the ultraviolet opalizer of 1%-5%, the silane of 0.1%-1%, one or more in the lubricant of 0.1%-1%.
3. cable jacket matrix material according to claim 2, is characterized in that: the molal weight of described lubricant is 900-3000g/mol.
4. cable jacket matrix material according to claim 3, is characterized in that: the molal weight of described lubricant is 1000-2000g/mol.
5. the cable jacket matrix material according to claim 2,3 or 4, is characterized in that: described lubricant comprises one or more in polyethylene wax, vinyl acetate between to for plastic wax, vinylformic acid wax, toxilic acid grafted polyethylene wax.
6. cable jacket matrix material according to claim 2, is characterized in that, described silane comprises one or more in A-174, A-171, A-151, A-172NT, A-2171, RC-1.
7. cable jacket matrix material according to claim 2, is characterized in that, described oxidation inhibitor comprises one or more in oxidation inhibitor 215, oxidation inhibitor 225, antioxidant 1010, irgasfos 168, phosphite antioxidant.
8. cable jacket matrix material according to claim 2, is characterized in that, described ultraviolet opalizer is carbon black.
9. cable jacket matrix material according to claim 1, is characterized in that, described granulated glass sphere particle diameter is 10-250 μm.
10. cable jacket matrix material according to claim 1, is characterized in that, described granulated glass sphere is hollow glass bead.
11. cable jacket matrix materials according to claim 1 or 10, it is characterized in that, the density of described granulated glass sphere is 0.1-0.9g/cm
3.
12. cable jacket matrix materials according to claim 1, is characterized in that, described granulated glass sphere lateral pressure resistant value is 6000psi or more than 6000psi.
13. cable jacket matrix materials according to claim 1, is characterized in that, described polyethylene is one or both in not used polyethylene and recycle polyethylene material.
14. cable jacket matrix materials according to claim 1, it is characterized in that, described polyethylene comprises one or more in Low Density Polyethylene, linear low density polyethylene, medium-density polyethylene and high density polyethylene(HDPE).
15. cable jacket matrix materials according to claim 13, is characterized in that, the density of described recycle polyethylene material is 0.90-0.98g/cm
3.
16. cable jacket matrix materials according to claim 1, is characterized in that, described poly stretch ratio is 2.0-5.0.
17. cable jacket matrix materials according to claim 1, is characterized in that, the density of described matrix material is 0.940-0.978g/cm
3.
18. cable jacket matrix materials according to claim 1, is characterized in that, described matrix material uses twin screw extruder, makes through extruding blending technology.
The preparation method of the cable jacket matrix material described in the arbitrary claim of 19. claim 1 to 18, is characterized in that, comprise step: each raw material mixes by (1); (2) by mixed each feedstock transportation to forcing machine; (3) by forcing machine by each raw material blending extrusion.
The preparation method of 20. cable jacket matrix materials according to claim 19, is characterized in that, also comprise step: each raw material is extruded with strip by (4); (5) cool; (6) granulation.
The preparation method of 21. cable jacket matrix materials according to claim 19, it is characterized in that, described forcing machine is twin screw extruder.
22. cable jackets, is characterized in that, are made up of the cable jacket matrix material described in the arbitrary claim of claim 1 to 21.
23. optical cables, comprise Cable Core and the cable jacket being trapped among Cable Core periphery, it is characterized in that, described cable jacket adopts the cable jacket matrix material described in the arbitrary claim of claim 1 to 21 to make.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410446294.0A CN105385000A (en) | 2014-09-03 | 2014-09-03 | Optical fiber cable sheath composite material and preparation method thereof, optical fiber cable sheath and optical fiber cable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410446294.0A CN105385000A (en) | 2014-09-03 | 2014-09-03 | Optical fiber cable sheath composite material and preparation method thereof, optical fiber cable sheath and optical fiber cable |
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| CN105385000A true CN105385000A (en) | 2016-03-09 |
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Cited By (1)
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| WO2018195914A1 (en) * | 2017-04-28 | 2018-11-01 | Corning Optical Fiber Cable (Chengdu) Co. Ltd | Vent type extruder and method of manufacturing cable jacket using the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018195914A1 (en) * | 2017-04-28 | 2018-11-01 | Corning Optical Fiber Cable (Chengdu) Co. Ltd | Vent type extruder and method of manufacturing cable jacket using the same |
| CN110769999A (en) * | 2017-04-28 | 2020-02-07 | 成都康宁光缆有限公司 | Vented extruder and method of manufacturing cable sheath using the vented extruder |
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