CN103809257B - A kind of optical cable GTL base oil filling paste and preparation method thereof - Google Patents
A kind of optical cable GTL base oil filling paste and preparation method thereof Download PDFInfo
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- CN103809257B CN103809257B CN201310118461.4A CN201310118461A CN103809257B CN 103809257 B CN103809257 B CN 103809257B CN 201310118461 A CN201310118461 A CN 201310118461A CN 103809257 B CN103809257 B CN 103809257B
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Abstract
The invention discloses a kind of optical cable GTL base oil filling paste, be mainly made up of GTL base oil, oil dividing inhibitor, thermoplastic synthetic rubber, antioxidant and thickening agent.The preparation method also disclosing a kind of optical cable GTL base oil filling paste.The key property that optical cable GTL base oil is filled is that density is little, cryogenic property is excellent, can in-50 DEG C of environment as an alternative the ointment product safety of artificial oil use, and it is little regardless of oil, acid number to have excellent colloid stability and oxidation stability, thermostability, weatherability, system；Thixotropic index is high, low viscosity, and water-resistance is strong, and not emulsifying, high temperature drip is good, suitable environment temperature width, can make optical fiber in Loose tube and cable core can be in unstress state the most freely all the time in cable.
Description
Technical field
The present invention relates to a kind of filling paste and preparation method thereof, particularly relate to a kind of optical cable GTL base oil filling paste and preparation method thereof.
Background technology
Communication industry is basic industry and the pillar industry of Chinese national economy, is build national information infrastructure, it is provided that network and information service, the industry strategic, guiding of comprehensive support socio-economic development.Eleventh Five-Year Plan period, Communication in China industry achieves bigger development, by actively developing 3G network construction and service application, carries forward vigorously TD-SCDMA industrialization and commercialization process, and industry entirety maintains the development that healthy and stable is orderly.At present, the communications industry has become the Chaoyang enterprise of world community, and along with developing rapidly of optic communication cause, the demand of optical cable grows with each passing day；Making rapid progress of optical communications industry brings great convenience to daily life, and daily life (mobile phone, computer, TV, network etc.) has be unable to do without optic communication；It is known that optic communication is by optical cable transmission information, the core material of optical cable is optical fiber, and the patron saint of optical fiber is ointment, say, that ointment is the servant of optical fiber, and the good no of ointment product quality will directly influence the transmission performance of optical cable.Optical fiber, under the effect of moisture content, moisture and stress, can produce stress corrosion, can produce hydrogen loss in ambient containing hydrogen；Optical fiber is once be stressed, corroding and hydrogen loss will be substantially reduced the transmission performance of optical cable information, as time goes by, optical cable will lose its information transmission performance gradually, the consequence that society is brought by the generation of this phenomenon is well imagined, single pair of daily life and work do not bring very big inconvenience, also will produce nation-building to have a strong impact on.
In sum, the quality of cable manufactures will be played vital effect by ointment product quality good no, and ointment product quality good no is mainly determined by the quality of base oil；The good no of base oil quality will directly influence the quality of ointment product thus.
Along with the high request of optical cable quality and updating of cable configuration, the quality of conventional ointment product can not meet the serviceability of present cable manufactures and filled requirement；It is mainly reflected in the processing characteristics (speed, thixotropy etc.) of optical cable, suitable environment (low temperature requirements to ointment) and optical cable new structure.Compact along with cable configuration, fiber number increases, and casing diameter such as reduces at the technological improvement, and ointment filling paste product is proposed higher technology requirement.It is mainly reflected in density, low temperature, viscosity, cone penetration and thixotropic index aspect (abbreviation thixotropic paste)；It is that filling paste density value is little that its key property requires, it is possible to directly alleviate the own wt of optical cable, reduces optical cable cost, can also alleviate self-supporting load forces for optical cable when built on stilts simultaneously.Thixotropic index value wants high (major embodiment fibre cream solid-state skeleton under static state), versatility wants width, and (secondary coating pipe diameter can be general, cream need not be changed), high temperature drip is good, suitable environment wide (requirement of ointment high and low temperature environment), it can make optical fiber in Loose tube and cable core can be in unstress state the most freely all the time in cable.This reduces the stress corrosion under stress, moisture content and moisture effect of the microbending loss of optical fiber and optical fiber.When this fine cream is when being stressed (such as the carrying of optical cable, lifting etc.), it is shown that optical fiber is fixed motionless by the state that solid is the same；And when this stress is higher than a marginal value (as by bending, make a dash and hit), filling paste will flow, and viscosity then declines rapidly, so, optical fiber almost can just discharge these suffered stress while being stressed and without bending.And, because the thermodynamics phase tendency of this filling paste is solid-state, so filling paste reverts to high viscosity gradually again and fixed by optical fiber after optical fiber is free；Substantially increase the transmission quality of optical cable.
Therefore, the optical cable filling paste how developing serviceability and filling requirement that a kind of energy meets present cable manufactures is always up one of those skilled in the art direction being devoted to research.
Summary of the invention
It is an object of the invention to overcome the defect of prior art to provide a kind of optical cable GTL base oil filling paste, can directly alleviate the own wt of optical cable, because ointment density is little, it is possible to directly reduce the ointment loading between unit volume cable sleeve and gap, reduce optical cable cost；Because ointment cryogenic property is excellent, it is possible to replace artificial oil, can thoroughly solve the optical cable safe handling when various natural environment and climate and protection question, to ensure the transmission performance of optical cable.
Further object is that the preparation method that a kind of optical cable GTL base oil filling paste is provided.
The object of the present invention is achieved like this:
The invention provides a kind of optical cable GTL base oil filling paste, including following components in percentage by weight:
GTL base oil 70～90%；
Oil dividing inhibitor 5～15%；
Antioxidant 0.3～1%；
Thermoplastic synthetic rubber 5～12%；
Thickening agent 2～10%；
The percentage by weight sum of all components is 100%.
Above-mentioned a kind of optical cable GTL base oil filling paste, wherein, the GTL base oil that Shell Co. Ltd produces selected by described GTL base oil, and described oil dividing inhibitor selects polyisobutylene or polybutene；High-temp liquid antioxidant selected by described antioxidant；The high molecular polymer thermoplastic synthetic rubber that described thermoplastic synthetic rubber selects styrene weight content to be 35-40%；Described thickening agent selects gas-phase silica.
The preparation method that present invention also offers a kind of above-mentioned optical cable GTL base oil filling paste, comprises the following steps:
Being joined by oil dividing inhibitor in GTL base oil, the uniform stirring 1～2 hour of heating, when temperature rises to 60 DEG C, add thermoplastic synthetic rubber, continue stirring 2～5 hours of heating, treat that temperature rises to 160 DEG C, stopping is heated, and insulated and stirred, after 1～3 hour, adds antioxidant and is stirred for 0.5-1 hour, then again cooling down to 50 DEG C～80 DEG C, add thickening agent, after abundant feed back stirs 1～3 hour, grind through homogenizing, vacuum outgas, obtains the final products of water white transparency shape colloid.
The base oil that GTL base oil is is Material synthesis with natural gas.Owing to GTL base oil is processed by natural gas synthesis, so it is as clear as crystal as water, its molecular structure and conventional foundation oil have essential distinction, not sulfur-bearing and aromatic hydrocarbon can be truly realized, secondly its density is very little, and pour point is low, and viscosity index value is high, belong to III+ base oil, it is possible to replace artificial oil to process different ointment products and make optical cable be applicable to various environment.Following table is every technical parameter of the filling paste that oil processes based on GTL base oil (i.e. the technical solution adopted in the present invention), common III base oil, artificial oil:
As can be seen from the above table, the technical specification of the filling paste that filling paste and the artificial oil that GTL base oil produces produces substantially close to, and the ointment product produced with common Group III oil has very big difference；Its main distinction in technical specification is embodied in, outward appearance, dropping point, density, low temperature cone penetration, viscosity, acid number, colour stability, thixotropic index value.
The technical characteristic of GTL base oil filling paste of the present invention is applied on optical cable and is had the advantage that
A, GTL base oil filling paste of the present invention outward appearance more transparent than the outward appearance of the filling paste of other Oil Production, it is as clear as crystal as water, owing to it is synthesized by natural gas, molecular structure and conventional foundation oil have essential distinction, can be truly realized not sulfur-bearing and aromatic hydrocarbon.So its all material with cable configuration all shows the good compatibility (these materials include: optical fiber, Loose tube material such as PBT, PA, PP, HDPE, PE etc.)；Can ensure that cable manufactures long-term safety when various natural environment and climate is run.Simultaneously because GTL base oil filling paste transparency is high, convenient in optical cable construction subsequent duty.
B, the dropping point of filling paste that the dropping point of GTL base oil filling paste of the present invention produces than other base oil are much higher, it is possible to compare favourably with artificial oil (PAO), from upper table；But more than the low price half of the price artificial oil (PAO) of GTL technical oil.The dropping point of ointment product is an index of reflection filling paste hot property, refer to ointment heating when regulation, ointment raises and deliquescing or thawing with temperature, the height of ointment dropping point represents that ointment can bear the heating degree of ambient temperature in use, and the more high ambient temperature born of ointment dropping point value is more high.Simultaneously because ointment melting point is higher, can ensure that the not drip in hot environment of the ointment in optical cable loose tube.The cable environment that GTL base oil filling paste of the present invention is more suitable for various optical cable thus filling, particularly high and low temperature environment are more severe.
C, GTL base oil filling paste of the present invention high/low temperature cone penetration value more many greatly than the cone penetration value of other ointment.The cone penetration value of filling paste is divided into room temperature and low temperature, optical cable mentions it important.
1., room temperature cone penetration, it is alternatively referred to as optical cable fill process cone penetration, for value of ointment product cone penetration itself to cable manufactures not in all senses, it only represents the denseness amount (i.e. soft or hard degree) of ointment, its measuring method is: at the temperature and load of regulation, the standard cone of penetration meter vertically sank to the degree of depth of ointment sample in 5 seconds, was called cone penetration, in units of 1/10mm.Cone penetration value is bigger, and denseness less (ointment is rarer), vice versa.For the technique of optical cable loose tube, the cone penetration value of ointment is more big more is easily filled (ointment is rarer, good fluidity), may also speed up pine set speed simultaneously；But the value of ointment cone penetration can not unconfined expand, because cone penetration value is more big, ointment more easily has analysis oil, and the high temperature drip of optical cable loose tube is also difficult to pass through simultaneously.This is conflicting index.Owing to the molecular structure of GTL base oil is different from other oil product, with the structural framework quite stable of the ointment that it processes, even if the cone penetration value of ointment is amplified to 5001/10mm 80 DEG C, under 24h environmental condition without producing analysis oil, also ensure that the optical cable loose tube of ￠ 4mm not drip in 80 DEG C of environment simultaneously.GTL base oil filling paste is more suitable for the filling of various optical cable thus, may also speed up the speed of production of two sets simultaneously.
2., the low temperature cone penetration of GTL base oil filling paste of the present invention more many greatly than the low temperature cone penetration of other filling paste, it can compared with artificial oil (PAO) U.S., from upper table.The minimum use temperature of communications optical cable depends on use environment and the system of laying of optical cable, the limit low temperature of commercial optical cable is generally-40 DEG C, special occasions is likely to lower, and if the limit low temperature of aerial optical cable of northern China Daxinganling forest area is up to-55 DEG C, the limit low temperature of military fiber optic cable is also-55 DEG C.The optical cable used at low temperatures requires that ointment remains to keep enough flexibilities under extremely low temperature, so that optical fiber can obtain good mechanical damping protective effect, if not, optical fiber will produce serious microbending loss in stiff ointment.Therefore, optical fiber filling paste must keep certain low temperature cone penetration value under limiting temperature.The size of optical fiber filling paste low temperature cone penetration value is almost completely dependent on the character of base oil.The characteristic of GTL base oil is exactly that pour point is good, and viscosity index value is high, it will ensure that communications optical cable safe transmission information in severe low temperature environment.
D, the acid number of GTL base oil filling paste of the present invention, colour stability are less than the value of general ointment many, from upper table.Acid number indicates that the total content of ointment Free Acid, and acid number is more big, and the content of the free acid in expression ointment is more big, and fibre coating and Loose tube material will be produced corrosiveness by it.As time goes on, it will have a strong impact on the transmission performance of communications optical cable.Optical fiber filling paste is meeting oxidation deterioration in long storage periods and use procedure, and acid number becomes big simultaneously, and this produces mainly due to the oxidation stability instability of oil product, and it is mainly reflected in the colour stability aspect of ointment.The oil product of high-quality, its colour stability is quite stable, and colour stability changing value is fairly small.
E, GTL base oil filling paste of the present invention the viscosity of the general ointment of ratio of viscosities little, from upper table.The viscosity number of ointment belongs to the process parameter value of optical cable loose tube, and its size will directly influence the fill process of Loose tube, and theoretically, the viscosity number of ointment is more little more the control of the filling of being easy in Loose tube ointment and excess fiber length.But the too small meeting of the viscosity of ointment causes optical cable high temperature drip, the viscosity number of ointment product is controlled a little bit smaller when guaranteeing that optical cable high temperature drip passes through thus as far as possible.
F, the density of filling paste that all base oils of density ratio of GTL base oil filling paste of the present invention produce will be little many, from upper table, ointment density is little can be not only fill between cable sleeve and gap to save material, directly reduce optical cable Financial cost, the own wt of optical cable can also be alleviated, self-supporting load forces can also be alleviated when built on stilts for optical cable simultaneously.
GTL base oil filling paste of the present invention does not need heating when filling, and fills and optical cable can play after optical cable good protection against the tide, waterproof, shockproof, buffering, anti-high and low-temp etc. act on, and oversheath in optical cable is had the good compatibility.This product processing technique is simple, versatility wide, Applicable temperature environment width, and production environment cleans, pollution-free, water-resistance strong, and high temperature performance is excellent, is entirely capable of meeting the serviceability of present cable manufactures and filling requirement, is novel Green Product.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described.
Embodiment 1
The oil dividing inhibitor of 100 weight portions is joined in the GTL base oil of 800 weight portions, heat uniform stirring 1～2 hour, when temperature rises to 60 DEG C, add the thermoplastic synthetic rubber of 65 weight portions, continue stirring 2～5 hours of heating, treat that temperature rises to 160 DEG C, stopping is heated, after insulated and stirred 1～3 hour, the antioxidant adding 5 weight portions is stirred for 0.5-1 hour, then again cooling down to 50 DEG C～80 DEG C, add the thickening agent of 30 weight portions, after abundant feed back stirs 1～3 hour, grind through homogenizing, vacuum outgas, the final products finally obtained are water white transparency shape colloid.
In above-mentioned raw materials, the GTL base oil that Shell Co. Ltd produces selected by GTL base oil, oil dividing inhibitor selects Daopu Chemical International Trade Co., Ltd., Shanghai, model to be PB1300 polyisobutylene product, and thermoplastic synthetic rubber is the product of G1701 selected from Kraton company of the U.S., model；The high-temp liquid antioxidant product that antioxidant selects Ciba (China) company limited, model to be L135, gas-phase silica selects the H20 product of Wa Ke company of Germany.
These final products leading indicator after testing is: outward appearance (water white transparency)；Density (20 DEG C, 0.817g/cm3)；Thixotropic index value (13.5)；Dropping point (230 DEG C)；Flash-point (230 DEG C)；Cone penetration (25 DEG C, 1/10mm, 460；-40 DEG C, 1/10mm, 330)；Colour stability (130 DEG C, 120h, 0.1)；Oxidation induction period (190 DEG C, > 60min)；Liberation of hydrogen value (80 DEG C, 24h, 0.003 μ l/g)；Analysis oil (80 DEG C, 24h, 0%)；Evaporation capacity (80 DEG C, 24h, 0.08%)；Viscosity (25 DEG C, D=50S-1, 3986mpa.s)；Water-resistance (20 DEG C, 7d, do not disintegrate, not emulsifying), acid number (0.06mgKOH/g)；Water content (nothing)；High temperature drip (80 DEG C, not drip)；Excellent with all material compatibility.
Embodiment 2
The oil dividing inhibitor of 90 weight portions is joined in the GTL base oil of 800 weight portions, heat uniform stirring 1～2 hour, when temperature rises to 60 DEG C, add the thermoplastic synthetic rubber of 70 weight portions, continue stirring 2～5 hours of heating, treat that temperature rises to 160 DEG C, stopping is heated, after insulated and stirred 1～3 hour, the antioxidant adding 5 weight portions is stirred for 0.5-1 hour, then again cooling down to 50 DEG C～80 DEG C, add the thickening agent of 35 weight portions, after abundant feed back stirs 1～3 hour, grind through homogenizing, vacuum outgas, the final products finally obtained are water white transparency shape colloid.
In above-mentioned raw materials, the GTL base oil that Shell Co. Ltd produces selected by GTL base oil, oil dividing inhibitor selects Daopu Chemical International Trade Co., Ltd., Shanghai, model to be PB1300 polyisobutylene product, and thermoplastic synthetic rubber is the product of G1701 selected from Kraton company of the U.S., model；The high-temp liquid antioxidant product that antioxidant selects Ciba (China) company limited, model to be L135, gas-phase silica selects the H20 product of Wa Ke company of Germany.
These final products leading indicator after testing is: outward appearance (water white transparency)；Density (20 DEG C, 0.818g/cm3)；Thixotropic index value (14.2)；Dropping point (232 DEG C)；Flash-point (230 DEG C)；Cone penetration (25 DEG C, 1/10mm, 457；-40 DEG C, 1/10mm, 333)；Colour stability (130 DEG C, 120h, 0.1)；Oxidation induction period (190 DEG C, > 60min)；Liberation of hydrogen value (80 DEG C, 24h, 0.003 μ l/g)；Analysis oil (80 DEG C, 24h, 0%)；Evaporation capacity (80 DEG C, 24h, 0.08%)；Viscosity (25 DEG C, D=50S-1, 3933mpa.s)；Water-resistance (20 DEG C, 7d, do not disintegrate, not emulsifying), acid number (0.07mgKOH/g)；Water content (nothing)；High temperature drip (80 DEG C, not drip)；Excellent with all material compatibility.
Embodiment 3
The oil dividing inhibitor of 95 weight portions is joined in the GTL base oil of 790 weight portions, heat uniform stirring 1～2 hour, when temperature rises to 60 DEG C, add the thermoplastic synthetic rubber of 70 weight portions, continue stirring 2～5 hours of heating, treat that temperature rises to 160 DEG C, stopping is heated, after insulated and stirred 1～3 hour, the antioxidant adding 5 weight portions is stirred for 0.5-1 hour, then again cooling down to 50 DEG C～80 DEG C, add the thickening agent of 40 weight portions, after abundant feed back stirs 1～3 hour, grind through homogenizing, vacuum outgas, the final products finally obtained are water white transparency shape colloid.
In above-mentioned raw materials, the GTL base oil that Shell Co. Ltd produces selected by GTL base oil, oil dividing inhibitor selects Daopu Chemical International Trade Co., Ltd., Shanghai, model to be PB2400 polyisobutylene product, and thermoplastic synthetic rubber is the product of G1701 selected from Kraton company of the U.S., model；The high-temp liquid antioxidant product that antioxidant selects Ciba (China) company limited, model to be L135, gas-phase silica selects the H20 product of Wa Ke company of Germany.
These final products leading indicator after testing is: outward appearance (water white transparency)；Density (20 DEG C, 0.819g/cm3)；Thixotropic index value (13.2)；Dropping point (230 DEG C)；Flash-point (230 DEG C)；Cone penetration (25 DEG C, 1/10mm, 455；-40 DEG C, 1/10mm, 325)；Colour stability (130 DEG C, 120h, 0.1)；Oxidation induction period (190 DEG C, > 60min)；Liberation of hydrogen value (80 DEG C, 24h, 0.003 μ l/g)；Analysis oil (80 DEG C, 24h, 0%)；Evaporation capacity (80 DEG C, 24h, 0.08%)；Viscosity (25 DEG C, D=50S-1, 4103mpa.s)；Water-resistance (20 DEG C, 7d, do not disintegrate, not emulsifying), acid number (0.06mgKOH/g)；Water content (nothing)；High temperature drip (80 DEG C, not drip)；Excellent with all material compatibility.
Embodiment 4
The oil dividing inhibitor of 90 weight portions is joined in the GTL base oil of 810 weight portions, heat uniform stirring 1～2 hour, when temperature rises to 60 DEG C, add the thermoplastic synthetic rubber of 65 weight portions, continue stirring 2～5 hours of heating, treat that temperature rises to 160 DEG C, stopping is heated, after insulated and stirred 1～3 hour, the antioxidant adding 5 weight portions is stirred for 0.5-1 hour, then again cooling down to 50 DEG C～80 DEG C, add the thickening agent of 30 weight portions, after abundant feed back stirs 1～3 hour, grind through homogenizing, vacuum outgas, the final products finally obtained are water white transparency shape colloid.
In above-mentioned raw materials, the GTL base oil that Shell Co. Ltd produces selected by GTL base oil, oil dividing inhibitor selects Daopu Chemical International Trade Co., Ltd., Shanghai, model to be PB2400 polyisobutylene product, and thermoplastic synthetic rubber is the product of G1701 selected from Kraton company of the U.S., model；The high-temp liquid antioxidant product that antioxidant selects Ciba (China) company limited, model to be L135, gas-phase silica selects the H20 product of Wa Ke company of Germany.
These final products leading indicator after testing is: outward appearance (water white transparency)；Density (20 DEG C, 0.817g/cm3)；Thixotropic index value (13.1)；Dropping point (230 DEG C)；Flash-point (230 DEG C)；Cone penetration (25 DEG C, 1/10mm, 463；-40 DEG C, 1/10mm, 330)；Colour stability (130 DEG C, 120h, 0.1)；Oxidation induction period (190 DEG C, > 60min)；Liberation of hydrogen value (80 DEG C, 24h, 0.003 μ l/g)；Analysis oil (80 DEG C, 24h, 0%)；Evaporation capacity (80 DEG C, 24h, 0.08%)；Viscosity (25 DEG C, D=50S-1, 3926mpa.s)；Water-resistance (20 DEG C, 7d, do not disintegrate, not emulsifying), acid number (0.06mgKOH/g)；Water content (nothing)；High temperature drip (80 DEG C, not drip)；Excellent with all material compatibility.
Above example is used for illustrative purposes only, but not limitation of the present invention, person skilled in the relevant technique, without departing from the spirit and scope of the present invention, various conversion or modification can also be made, therefore all equivalent technical schemes also should belong to scope of the invention, should be limited by each claim.
Claims (3)
1. an optical cable GTL base oil filling paste, it is characterised in that include following components in percentage by weight:
The percentage by weight sum of all components is 100%,
This filling paste is prepared by the following method, it may be assumed that
Being joined by oil dividing inhibitor in GTL base oil, the uniform stirring 1～2 hour of heating, when temperature rises to 60 DEG C, add thermoplastic synthetic rubber, continue stirring 2～5 hours of heating, treat that temperature rises to 160 DEG C, stopping is heated, and insulated and stirred, after 1～3 hour, adds antioxidant and is stirred for 0.5-1 hour, then cooling down, to 50 DEG C～80 DEG C, adds thickening agent again, after abundant feed back stirs 1～3 hour, grind through homogenizing, vacuum outgas, obtains final products
Described oil dividing inhibitor is polyisobutylene or polybutene,
Described antioxidant is high-temp liquid antioxidant,
Described thermoplastic synthetic rubber is styrene weight content is the high molecular polymer thermoplastic synthetic rubber of 35-40%,
Described thickening agent is gas-phase silica.
2. the method preparing optical cable GTL base oil filling paste as claimed in claim 1, it is characterised in that comprise the following steps:
Being joined by oil dividing inhibitor in GTL base oil, the uniform stirring 1～2 hour of heating, when temperature rises to 60 DEG C, add thermoplastic synthetic rubber, continue stirring 2～5 hours of heating, treat that temperature rises to 160 DEG C, stopping is heated, and insulated and stirred, after 1～3 hour, adds antioxidant and is stirred for 0.5-1 hour, then again cooling down to 50 DEG C～80 DEG C, add thickening agent, after abundant feed back stirs 1～3 hour, grind through homogenizing, vacuum outgas, obtains final products.
3. method as claimed in claim 2, it is characterised in that described final products are water white transparency shape colloid.
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| CN111808431A (en) * | 2020-07-02 | 2020-10-23 | 上海鸿辉光通科技股份有限公司 | Optical fiber filling paste with ultralow loss to optical fiber and preparation method thereof |
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| US6658185B2 (en) * | 1999-08-23 | 2003-12-02 | Pirelli Cavi E Sistemi S.P.A. | Optical fiber cable with components having improved compatibility with waterblocking filling compositions |
| JP2009149771A (en) * | 2007-12-20 | 2009-07-09 | Cosmo Oil Lubricants Co Ltd | Grease composition for control cable and control cable |
| CN101550375B (en) * | 2009-04-30 | 2011-05-18 | 华烁科技股份有限公司 | Super absorbent expansion thixotropy type block water paste with low density for optic cable and preparing method thereof |
| CN102053321B (en) * | 2009-11-10 | 2012-11-21 | 上海鸿辉光通材料有限公司 | Thermal expansion water-blocking filling paste for optical cables and preparation method thereof |
| CN102902026B (en) * | 2011-07-27 | 2015-05-27 | 上海鸿辉光通科技股份有限公司 | Optical fiber filling paste for polypropylene tube optical cable and preparation method thereof |
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