A spider-web fiber ribbon optical cable and a method of manufacturing the same

Abstract

The application discloses a spider-web optical fiber ribbon cable and a preparation method thereof, and relates to the technical field of optical cable materials. The spider-web optical fiber ribbon cable is composed of at least a central reinforcing element, an air-core optical fiber ribbon unit, a protection unit and a sheath layer. The air-core optical fiber ribbon unit is arranged outside the central reinforcing element, the protection unit is arranged around and covers the outside of the air-core optical fiber ribbon unit, and the sheath layer is wrapped outside the protection unit. The air-core optical fiber ribbon unit is obtained by fixing a plurality of spider-web structure cladding air-core optical fibers with a coating layer on the surface through an adhesive. The application realizes the problems of structure protection and interface compatibility by adopting a novel coating material to prepare the coating layer on the spider-web structure cladding air-core optical fiber. The modulus matching and delamination problems are solved by using a novel adhesive, and finally, the stable-performance spider-web optical fiber ribbon cable is prepared.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical cable materials, and particularly relates to a cobweb optical fiber ribbon optical cable and a preparation method thereof. BACKGROUND

[0002] With the three-in-one of TV network, telecom network and computer network, the requirement for data transmission speed is higher and higher, and optical into copper out becomes an inevitable trend. In long distance transmission, low loss and high bandwidth quartz optical fiber has obvious advantages. The transmission loss of optical fiber is largely determined by the intrinsic absorption loss of the material constituting the optical fiber. The intrinsic absorption loss of high-purity quartz is as low as 0.2 dB / km, close to its theoretical limit. Using quartz optical fiber as the transmission medium of optical communication can meet the demand of trunk and transoceanic cable laying. However, quartz optical fiber is expensive, has small core diameter, is not easy to couple, and is difficult to splice, which restricts its application in access network. Therefore, plastic optical fiber with large core diameter and good mechanical properties has attracted people's attention.

[0003] Compared with quartz optical fiber, plastic optical fiber has the advantages of simple manufacturing, low price, fast splicing, high impact strength and radiation resistance, and is very suitable for short and medium distance, small and medium capacity optical fiber communication systems in local area network. Although plastic optical fiber has many incomparable advantages over quartz optical fiber, its transmission loss is large, and the loss of plastic optical fiber is about 100 dB / km-300 dB / km, and the intensity is reduced by half after 20m of optical transmission or even shorter. The use of spider web structure cladding hollow Bragg optical fiber can greatly reduce the loss of plastic optical fiber, and the absorption loss of the material constituting the optical fiber is compressed to 10 4 -10 6 times, which fundamentally solves the problem of large loss of plastic optical fiber. On this basis, the advantages of softness and easy bending of plastic optical fiber can be fully utilized to realize low loss transmission of all waveband information and energy of light, and the new generation of plastic optical fiber will become a widely and massively used optical fiber.

[0004] Spider web cladding hollow core Bragg plastic optical fiber has low transmission loss, anti-electromagnetic interference and lightweight advantage due to the hollow structure, and has significant application potential in short distance communication field. However, the transmission capacity of single spider web optical fiber is limited, and it is difficult to meet the demand of parallel transmission of multiple signals, so the integration of multiple spider web optical fibers to form an optical fiber ribbon cable becomes a key direction to improve the transmission capacity. However, the integration technology of spider web optical fiber is not mature, and the following defects exist: firstly, the mechanical strength of the spider web cladding of the spider web optical fiber is lower than that of the solid core optical fiber, and when multiple spider web optical fibers are integrated, the traditional ribbon adhesive is used, the modulus is not matched or the temperature changes, the adhesive will generate stress on the optical fiber, which is easy to cause the deformation of the spider web structure, increase the loss and affect the optical performance; secondly, the existing optical fiber ribbon adhesive has poor compatibility with the coating layer of the spider web optical fiber, and delamination phenomenon easily occurs, which reduces the stability of the optical cable. Therefore, developing a preparation technology suitable for the integration of multiple spider web optical fiber units has become the core to solve the above problems. SUMMARY

[0005] The purpose of the present application is to provide a spider web optical fiber ribbon cable and a preparation method thereof, which solves the following technical problems:

[0006] The mechanical strength of the spider web cladding of the spider web optical fiber is low, and when multiple spider web optical fibers are integrated, the traditional ribbon adhesive is used, the modulus is not matched or the temperature changes, the adhesive will generate stress on the optical fiber, which is easy to cause the deformation of the spider web structure; and the existing optical fiber ribbon adhesive has poor compatibility with the coating layer of the spider web optical fiber, and delamination phenomenon easily occurs, which reduces the stability of the optical cable.

[0007] The purpose of the present application can be realized by the following technical solutions:

[0008] A spider web optical fiber ribbon cable, the spider web optical fiber ribbon cable is composed of at least a central reinforcing member, a hollow core optical fiber ribbon unit, a protection unit and a sheath layer; the hollow core optical fiber ribbon unit is wrapped outside the central reinforcing member, the protection unit is wrapped and coated outside the hollow core optical fiber ribbon unit, and the sheath layer is wrapped outside the protection unit;

[0009] The hollow core optical fiber ribbon unit is obtained by fixing a plurality of spider web structure cladding hollow core optical fibers with a coating layer on the surface by an adhesive;

[0010] The adhesive comprises the following raw materials in percentage by weight: 58%-68% polyurethane acrylate resin, 10-15% core-shell rubber particles, 5-8% acrylate-terminated polydimethylsiloxane, 8%-12% active diluent, 4%-6% adhesion promoter, 2%-3% photoinitiator and 0.2%-0.5% light stabilizer, and the sum of the percentage by weight of the raw materials is 100%;

[0011] The preparation method of the core-shell rubber particles comprises the following steps:

[0012] S1: under the atmosphere of nitrogen, deionized water, sodium dodecyl sulfate are added into a reaction kettle for dispersion, core layer monomers, divinylbenzene are blended and then added into the reaction kettle, the temperature is controlled at 70-80 DEG C, potassium persulfate is added, and reaction is carried out for 3-6 h to obtain component one;

[0013] S2: the temperature of component one is controlled at 65-70 DEG C, shell layer monomers, allyl methacrylate are blended and then added into the reaction kettle, reaction is carried out for 1-2 h, the temperature is controlled at 75-80 DEG C, and reaction is carried out for 2-4 h to obtain component two;

[0014] S3: the temperature of component two is controlled at 75-80 DEG C, hydroxyethyl methacrylate, ethylene glycol dimethacrylate are blended and then added into the reaction kettle, the temperature is controlled at 80-85 DEG C, and reaction is carried out for 1-3 h, and then filtration and spray drying are carried out to obtain core-shell rubber particles.

[0015] As a further scheme of the present application: the polyurethane acrylate resin is a polyether type difunctional polyurethane acrylate; the adhesion promoter is an adhesion promoter containing phosphate groups; and the active diluent is methoxy polyethylene glycol acrylate.

[0016] As a further scheme of the present application: in S1, the core layer monomers are composed of butyl acrylate and ethylhexyl acrylate with a mass ratio of 60-70:20-30; and the addition ratio of deionized water, sodium dodecyl sulfate, core layer monomers, divinylbenzene and potassium persulfate is 100-150 mL:0.3-0.5 g:60-90 g:0.3-0.5 g:0.1-0.2 g.

[0017] As a further scheme of the present application: the shell layer monomers are composed of methyl methacrylate and styrene with a mass ratio of 8.5-9:1;

[0018] The addition amount of the shell layer monomers accounts for 8%-15% of the total mass of the core layer monomers; and the addition amount of allyl methacrylate accounts for 3-5% of the total mass of the shell layer monomers.

[0019] As a further scheme of the present application: in S3, the addition amount of hydroxyethyl methacrylate accounts for 2%-8% of the total mass of the shell layer monomers; and the addition amount of ethylene glycol dimethacrylate accounts for 0.5%-3% of the total mass of the shell layer monomers.

[0020] As a further scheme of the present application: the preparation method of the acrylate-terminated polydimethylsiloxane comprises the following steps:

[0021] In a nitrogen atmosphere, hydrogen-containing polydimethylsiloxane, toluene, hydroquinone are added into a reaction kettle for dispersion, the temperature is controlled at 60-70℃, hydroxyethyl acrylate is added, and the temperature is kept for 1-2h, isopropyl alcohol solution of chloroplatinic acid is added into the reaction kettle, the temperature is controlled at 80-100℃, and the reaction is kept for 5-6h, and then pressure reduction distillation, cooling to room temperature and filtration are carried out to obtain acrylate-terminated polydimethylsiloxane.

[0022] As a further scheme of the present application: the coating layer comprises the following raw materials in parts by weight: 50%-60% flexible polyether type polyurethane acrylate, 30%-40% perfluoropolyether modified acrylate, 5%-8% aminated modified nanometer boron nitride, 0.2%-0.3% polyacrylate dispersant, 0.5%-1% acrylate modified fluorine-containing surfactant, 1%-2% KH-550, 0.8-1% photoinitiator, and 0.2%-0.5% auxiliary initiator, and the sum of the weight percentages of the raw materials is 100%.

[0023] As a further scheme of the present application: the preparation method of the aminated modified nanometer boron nitride comprises the following steps: hydroxylated boron nitride, KH550, anhydrous ethanol and deionized water are added into a reaction kettle, the temperature is controlled at 50-60℃, and the temperature is kept for 2-4h, and then washing and drying are carried out to obtain the aminated modified nanometer boron nitride.

[0024] As a further scheme of the present application: the preparation method of the hydroxylated boron nitride comprises the following steps: nanometer boron nitride and sodium hydroxide solution are added into a reaction kettle, the temperature is controlled at 90-95℃, the reaction is kept for 3-6h, and then washing and drying are carried out to obtain the hydroxylated boron nitride.

[0025] The addition ratio of the hydroxylated boron nitride, KH550, anhydrous ethanol and deionized water is 10g:1-2g:40-80mL:10-20mL.

[0026] As a further scheme of the present application: the protection unit comprises an aerogel buffer layer wrapped on the surface of the hollow core optical fiber tape unit and a aramid fiber woven layer uniformly distributed on the outer surface of the aerogel buffer layer.

[0027] As a further scheme of the present application: a water-blocking tape is further arranged between the protection unit and the sheath layer.

[0028] The preparation method of any one of the above spider web optical fiber tape optical cables comprises the following steps: the hollow core optical fiber with a spider web structure cladding layer coated with a coating layer is placed in an arrangement mold at intervals, a gap is filled with an adhesive, and curing treatment is carried out to obtain a hollow core optical fiber tape unit.

[0029] The hollow core optical fiber tape unit is wrapped with a central reinforcing member.

[0030] The protection unit and the sheath layer are sequentially wrapped outside the hollow core optical fiber tape unit to obtain the spider web optical fiber tape optical cable.

[0031] The beneficial effects of the present application are:

[0032] (1) The adhesive, coating layer and optical fiber form a gradient modulus, a flexible transition layer is formed between the adhesive and the coating layer, the interfacial bonding strength is high, and the performance of the optical cable is long-term stable under temperature cycling or external stress

[0033] The present application prepares an adhesive with polyurethane acrylate resin as a base material, selects a long-chain, polyether-type, low-functionality (such as 2-functionality) polyurethane acrylate resin, ensures that the modulus after curing is within the target range, and provides the hydrogen bonding ability of the main structure and the coating layer; then adds core-shell rubber particles as energy dissipation centers in the adhesive to absorb impact energy and inhibit crack propagation, the hydroxyl groups on the molecular chains of the core-shell rubber particles are chemically crosslinked with the polyurethane acrylate resin matrix to prevent the core-shell rubber particles from debonding with the polyurethane acrylate resin matrix; also adds acrylate-terminated polydimethylsiloxane as an interfacial modifier to participate in curing through covalent bonds, form a stable flexible transition layer at the interface, reduce interfacial stress, and improve the delamination resistance; finally adds active diluent, adhesion promoter, photoinitiator and light stabilizer, wherein the adhesion promoter is an acrylic acid ester containing a phosphoric acid group to form chemical adsorption; the photoinitiator and light stabilizer are used in combination to ensure complete curing and the ultraviolet aging resistance of the adhesive.

[0034] The adhesive prepared by the present application has the characteristics of low modulus and ultraviolet light curing, and after curing, the gel has the characteristics of softness, and will not generate huge stress to squeeze the optical fiber due to temperature changes or bending, avoiding deformation of the microstructure of the optical fiber. The interfacial mismatch problem between the hard adhesive and the soft coating layer is perfectly solved. The acrylate-terminated polydimethylsiloxane forms an elastic transition layer at the interface, and its low surface energy and high flowability can release the shear stress generated due to temperature changes or mechanical deformation. The adhesive prepared by the present application has excellent interfacial compatibility with the coating layer, can realize mutual diffusion and entanglement of molecules, forms a firm interface, and improves the delamination resistance.

[0035] (2) The coating layer is arranged on the surface of the optical fiber to solve the interfacial compatibility problem

[0036] The application uses a flexible polyether polyurethane acrylate with UV curing and modulus of 0.2-0.5 GPa as the matrix of the coating layer, which has elasticity; adds perfluoropolyether modified acrylate in the coating layer to provide low refractive index and barrier property; further adds amino-modified nanometer boron nitride to provide lateral rigidity and thermal conductivity, and cooperates with a polyacrylate dispersant to improve the dispersion uniformity of the amino-modified nanometer boron nitride in the matrix; finally adds KH-550, acrylate modified fluorine-containing surfactant, photoinitiator and auxiliary initiator; wherein, the KH-550 improves the interfacial bonding force of the coating layer and the optical fiber cladding, the acrylate modified fluorine-containing surfactant realizes the compatible stability of the flexible polyether polyurethane acrylate and the perfluoropolyether modified acrylate, and prevents phase separation; the photoinitiator and the auxiliary initiator are used in cooperation to realize deep curing. The coating layer prepared in the application can absorb stress by the elastic matrix and uniformly disperse the stress through h-BN lamella when the optical fiber is subjected to lateral extrusion, avoiding stress concentration to pierce the spider web structure; and the high thermal conductivity ensures that the heat is quickly and uniformly distributed when the temperature changes, reducing local thermal stress.

[0037] The application adjusts the modulus and interfacial bonding force of the coating layer, the adhesive and the optical fiber cladding, the modulus of the coating layer is between the cladding of the optical fiber and the adhesive, and the gradient transition reduces stress concentration. The thermal expansion coefficient is partially matched with the cladding of the optical fiber, so that the adhesive-coating layer interface is not easy to delaminate under the action of thermal-mechanical stress, the position of the optical fiber in the cable is stable, and the appearance of additional micro-bending points caused by external force is avoided, the optical signal loss is reduced, and the long-term reliability of the optical cable is maintained. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the application will be described below in a clear and complete manner. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.

[0039] The preparation method of the acrylate-terminated polydimethylsiloxane includes the following steps:

[0040] In a nitrogen atmosphere, 80 g of hydrogen-containing polydimethylsiloxane, 50 mL of toluene and 0.03 g of hydroquinone were added to a reaction kettle for dispersion, the temperature was controlled at 60-70℃, 7 g of hydroxyethyl acrylate was added, and the temperature was kept for 1-2 h. 0.08 g of chloroplatinic acid isopropyl alcohol solution (with a platinum content of 0.08 mg) was added to the reaction kettle, the temperature was controlled at 80-100℃, and the reaction was kept for 5-6 h. After pressure reduction distillation, cooling to room temperature and filtration, acrylate-terminated polydimethylsiloxane was obtained.

[0041] The preparation method of the amino-modified nanometer boron nitride includes the following steps:

[0042] A1: Put the nano boron nitride into a 5 mol / L sodium hydroxide solution in a reaction kettle, control the temperature at 90℃, and keep the reaction for 3h, wash and dry to obtain hydroxylated boron nitride;

[0043] A2: Put 10g of hydroxylated boron nitride, 1g of KH550, 40mL of anhydrous ethanol, and 10mL of deionized water into a reaction kettle, control the temperature at 50℃, and treat for 2h, wash and dry to obtain aminated modified nano boron nitride.

[0044] The preparation method of the core-shell rubber particles comprises the following steps:

[0045] S1: In a nitrogen atmosphere, 100mL of deionized water and 0.3g of sodium dodecyl sulfate are added to a reaction kettle for dispersion, 60g of butyl acrylate, 20g of ethylhexyl acrylate, and 0.3g of divinylbenzene are blended and then added to the reaction kettle, the temperature is controlled at 70℃, 0.1g of potassium persulfate is added, and the reaction is carried out for 3-6h to obtain component one;

[0046] S2: The temperature of component one is controlled at 65℃, 8.5g of methyl methacrylate, 1g of styrene, and 0.4g of allyl methacrylate are blended and then added to the reaction kettle, the temperature is controlled at 75℃, and the reaction is carried out for 2h to obtain component two;

[0047] S3: The temperature of component two is controlled at 75℃, 0.4g of hydroxyethyl methacrylate and 0.19g of ethylene glycol dimethacrylate are blended and then added to the reaction kettle, the temperature is controlled at 80℃, and the reaction is carried out for 1h, then the mixture is filtered and spray dried to obtain the core-shell rubber particles.

[0048] The preparation method of the aminated modified nano boron nitride comprises the following steps:

[0049] A1: Put the nano boron nitride into a 5 mol / L sodium hydroxide solution in a reaction kettle, control the temperature at 90℃, and keep the reaction for 4.5h, wash and dry to obtain hydroxylated boron nitride;

[0050] A2: Put 10g of hydroxylated boron nitride, 1.5g of KH550, 80mL of anhydrous ethanol, and 20mL of deionized water into a reaction kettle, control the temperature at 55℃, and treat for 3h, wash and dry to obtain aminated modified nano boron nitride.

[0051] The preparation method of the core-shell rubber particles comprises the following steps:

[0052] S1: 100 mL of deionized water, 0.4 g of sodium dodecyl sulfate were added to the reaction kettle for dispersion under a nitrogen atmosphere, 60 g of butyl acrylate, 30 g of ethylhexyl acrylate, 0.4 g of divinylbenzene were blended and then added to the reaction kettle, the temperature was controlled at 75°C, 0.2 g of potassium persulfate was added, and the reaction was carried out for 4.5 h to obtain component one;

[0053] S2: Component one was controlled at a temperature of 70°C, 9 g of methyl methacrylate, 1 g of styrene, 0.4 g of allyl methacrylate were blended and then added to the reaction kettle, and the reaction was carried out for 1 h at a temperature of 80°C, and the reaction was carried out for 2 h at a temperature of 80°C to obtain component two;

[0054] S3: Component two was controlled at a temperature of 80°C, 0.5 g of hydroxyethyl methacrylate, 0.3 g of ethylene glycol dimethacrylate were blended and then added to the reaction kettle, the temperature was controlled at 80°C, and the reaction was carried out for 2 h, and then filtration and spray drying were carried out to obtain core-shell rubber particles.

[0055] The preparation method of the amino-modified nano boron nitride includes the following steps:

[0056] A1: Nano boron nitride was placed in a 5 mol / L sodium hydroxide solution in a reaction kettle, the temperature was controlled at 95°C, and the reaction was carried out for 6 h, and then washing and drying were carried out to obtain hydroxylated boron nitride;

[0057] A2: 10 g of hydroxylated boron nitride, 2 g of KH550, 80 mL of anhydrous ethanol, and 20 mL of deionized water were added to the reaction kettle, the temperature was controlled at 60°C, and the treatment was carried out for 4 h, and then washing and drying were carried out to obtain amino-modified nano boron nitride.

[0058] The preparation method of the core-shell rubber particles includes the following steps:

[0059] S1: 150 mL of deionized water, 0.5 g of sodium dodecyl sulfate were added to the reaction kettle for dispersion under a nitrogen atmosphere, 70 g of butyl acrylate, 20 g of ethylhexyl acrylate, 0.5 g of divinylbenzene were blended and then added to the reaction kettle, the temperature was controlled at 80°C, 0.2 g of potassium persulfate was added, and the reaction was carried out for 6 h to obtain component one;

[0060] S2: Component one was controlled at a temperature of 70°C, 10.8 g of methyl methacrylate, 1.2 g of styrene, 0.6 g of allyl methacrylate were blended and then added to the reaction kettle, the reaction was carried out for 2 h, the temperature was controlled at 80°C, and the reaction was carried out for 4 h to obtain component two;

[0061] S3: Component two was controlled at a temperature of 80°C, 0.96 g of hydroxyethyl methacrylate, 0.36 g of ethylene glycol dimethacrylate were blended and then added to the reaction kettle, the temperature was controlled at 85°C, and the reaction was carried out for 3 h, and then filtration and spray drying were carried out to obtain core-shell rubber particles.

[0062] Example 4 The coating layer comprises raw materials in the following weight percentages: 55% flexible polyether polyurethane acrylate (purchased from Bomar, brand BR-582E8), 35% perfluoropolyether modified acrylate (purchased from Silibase, brand FS-4110), 7% aminated modified nanometer boron nitride prepared in Example 1, 0.2% polyacrylate dispersant (BYK-190), 0.5% acrylate modified fluorine-containing surfactant (purchased from Chemours, brand FC-350 Capstone® FS-22), 1% KH-550, 0.8% photoinitiator (Irgacure 819), 0.5% auxiliary initiator (Irgacure 184).

[0063] The adhesive comprises raw materials in the following weight percentages: 65% polyurethane acrylate resin (polyether type difunctional polyurethane acrylate, purchased from Shanghai Runao Chemical, brand LuCure8722), 12% core-shell rubber particles prepared in Example 1, 6.5% acrylate-terminated polydimethylsiloxane prepared in Example 1, 9% active diluent (methoxy polyethylene glycol acrylate, purchased from Hubei Kanos, MPEGA600), 5% adhesion promoter (purchased from Yingchuang, brand VISIOMER® HEMA-P100), 2.2% photoinitiator (Irgacure TPO), 0.3% light stabilizer (purchased from BASF, Germany, brand Light Stabilizer 119FDL).

[0064] A preparation method of a spider-web optical fiber ribbon optical cable, comprising the following steps:

[0065] 8 spider-web structure cladding hollow optical fibers coated with the above-mentioned coating layer with a thickness of 28 um are placed in the spacer mold with an interval, the gap is filled with the above-mentioned prepared adhesive, and a curing treatment is performed at 50°C and an exposure amount of 500 mJ / cm 2 to obtain a hollow optical fiber ribbon unit;

[0066] The hollow optical fiber ribbon unit is wrapped with a central reinforcing member;

[0067] An aerogel buffer layer and an aramid fiber woven layer are sequentially wrapped outside the hollow optical fiber ribbon unit, and a polyethylene sheath layer is extruded to obtain a spider-web optical fiber ribbon optical cable.

[0068] Example 5 The coating layer of Example 5 is compared with Example 4, and only the aminated modified nanometer boron nitride prepared in Example 1 added in Example 4 is replaced with an equal amount of aminated modified nanometer boron nitride prepared in Example 2, and the remaining components and preparation method are completely consistent with Example 4.

[0069] The adhesive is only replaced by the core-shell rubber particles prepared in Example 3 in an equal amount in Example 4, and the other components and preparation method are completely consistent with Example 4.

[0070] A preparation method of a spider-web optical fiber ribbon optical cable, compared with Example 4, only the coating and adhesive used in Example 4 are replaced by the coating and adhesive prepared in Example 6 in an equal amount, and the other components and preparation method are completely consistent with Example 4.

[0071] Example 6 The amino-modified nanometer boron nitride prepared in Example 1 is only replaced by the amino-modified nanometer boron nitride prepared in Example 3 in an equal amount in Example 4, and the other components and preparation method are completely consistent with Example 4.

[0072] The adhesive is only replaced by the core-shell rubber particles prepared in Example 3 in an equal amount in Example 4, and the other components and preparation method are completely consistent with Example 4.

[0073] A preparation method of a spider-web optical fiber ribbon optical cable, compared with Example 4, only the coating and adhesive used in Example 4 are replaced by the coating and adhesive prepared in Example 6 in an equal amount, and the other components and preparation method are completely consistent with Example 4.

[0074] The preparation method of the hydroxylated boron nitride includes the following steps:

[0075] The nanometer boron nitride is placed in a 5 mol / L sodium hydroxide solution in a reaction kettle, the temperature is controlled at 90°C, and the reaction is kept for 4.5 h, and then washed and dried to obtain the hydroxylated boron nitride.

[0076] The preparation method of the core-shell rubber particles includes the following steps:

[0077] S1: In an argon atmosphere, 100 mL of deionized water and 0.4 g of sodium dodecyl sulfate are added to a reaction kettle for dispersion, and 60 g of butyl acrylate, 30 g of ethylhexyl acrylate, and 0.4 g of divinylbenzene are blended and then added to the reaction kettle, the temperature is controlled at 75°C, 0.2 g of potassium persulfate is added, and the reaction is kept for 4.5 h to obtain component one;

[0078] S2: The temperature of component one is controlled at 70°C, 9 g of methyl methacrylate, 1 g of styrene, and 0.4 g of allyl methacrylate are blended and then added to the reaction kettle, the reaction is kept for 1 h, the temperature is controlled at 80°C, and the reaction is kept for 2 h, and then filtered, spray-dried to obtain the core-shell rubber particles.

[0079] Comparative Example 2 The coating layer is compared with Example 5, and only the amino-modified nanometer boron nitride prepared in Example 2 added in Example 5 is replaced by the hydroxyl-modified boron nitride prepared in Comparative Example 1 in equal amount, and the remaining components and preparation method are completely consistent with Example 5.

[0080] The adhesive is completely consistent with Example 5.

[0081] A preparation method of a spider-web optical fiber ribbon cable, compared with Example 5, only the coating layer used in Example 5 is replaced by the coating layer of Comparative Example 2, and the remaining components and preparation method are completely consistent with Example 5.

[0082] Comparative Example 3 The coating layer is completely consistent with Example 5.

[0083] The adhesive is compared with Example 5, and only the core-shell rubber particles prepared in Example 2 added in Example 5 are replaced by the core-shell rubber particles prepared in Comparative Example 1 in equal amount, and the remaining components and preparation method are completely consistent with Example 5.

[0084] A preparation method of a spider-web optical fiber ribbon cable, compared with Example 5, only the adhesive in Example 5 is replaced by the coating layer prepared in Comparative Example 3 in equal amount, and the remaining components and preparation method are completely consistent with Example 5.

[0085] Comparative Example 4 The coating layer is completely consistent with Example 5.

[0086] The adhesive is compared with Example 5, and the acrylate-terminated polydimethylsiloxane prepared in Example 1 added in Example 5 is replaced by the polyurethane acrylate resin added in Example 5 in equal amount, and the remaining components and preparation method are completely consistent with Example 5.

[0087] A preparation method of a spider-web optical fiber ribbon cable, compared with Example 5, only the adhesive used in Example 5 is replaced by the adhesive prepared in Comparative Example 4 in equal amount, and the remaining components and preparation method are completely consistent with Example 5.

[0088] Performance detection

[0089] (1) Interfacial peeling strength: The peeling strength of the coating layer and the adhesive was detected, and a 90° peeling test was tested at a rate of 50 mm / min, and the detection results are shown in Table 1;

[0090] (2) Delamination rate after wet heat aging: 85°C / 85%RH aging for 1000h, observing the area ratio of delamination, and the detection results are shown in Table 1;

[0091] Table 1: Statistical table of interfacial bonding performance detection data of Examples 4-6 and Comparative Examples 2-4

[0092] Peeling strength (N / cm) Delamination area ratio / % Example 4 4.3 1.1 Example 5 4.4 1.0 Example 6 4.3 1.2 Comparative Example 2 3.8 5.2 Comparative Example 3 3.5 3.5 Comparative Example 4 1.8 25.1

[0093] From Table 1, it can be seen that the adhesive prepared in the application has high interface bonding strength with the coating layer, and still maintains excellent interface bonding strength under high humidity and high temperature environment.

[0094] (3) Transverse extrusion strength: under 1500N / 100mm extrusion, the additional loss of wavelength 1550nm at 23℃ before and after testing, the detection results are shown in Table 2;

[0095] (4) Bending loss: winding the optical fiber around the mandrel with a radius of 10mm, bending 100 times, the additional loss of wavelength 1550nm at 23℃ before and after testing, the detection results are shown in Table 2;

[0096] (5) Loss change rate after temperature cycle: after 200 cycles at-40℃-85℃, the additional loss change rate of wavelength 1550nm at 23℃ before and after testing, the detection results are shown in Table 2;

[0097] Table 2: Performance detection data statistics table of examples 4-6 and comparative examples 2-4

[0098] Additional loss (dB / km) Bending loss (dB / km) Temperature cycle loss change rate / % Example 4 0.02 0.03 3.2 Example 5 0.02 0.02 3.1 Example 6 0.03 0.03 3.4 Comparative Example 2 0.15 0.12 8.5 Comparative Example 3 0.08 0.10 6.1 Comparative Example 4 0.06 0.09 19.2

[0099] From Table 2, it can be seen that the adhesive prepared in the application can effectively reduce the influence of optical cable on optical signal loss under the action of external stress and temperature difference, and maintain the long-term reliability of the optical cable.

[0100] The above has carried out the detailed description to one embodiment of the application, but the content described is only the preferred embodiment of the application, and cannot be considered as used for limiting the implementation scope of the application. Any equivalent changes and improvements made according to the application scope should still belong to the patent coverage range of the application.

Claims

1. A spidered fiber ribbon optical cable characterized by, The spider-web optical fiber ribbon cable is composed of at least a central reinforcing member, a hollow-core optical fiber ribbon unit, a protective unit and a sheath layer; the hollow-core optical fiber ribbon unit is arranged outside the central reinforcing member, the protective unit is arranged around and covers the outside of the hollow-core optical fiber ribbon unit, and the sheath layer is arranged outside the protective unit; The hollow-core optical fiber ribbon unit is obtained by fixing a plurality of spider-web structure cladding hollow-core optical fibers coated with a coating layer by an adhesive; The adhesive comprises raw materials in the following proportions by weight: 58%-68% polyurethane acrylate resin, 10-15% core-shell rubber particles, 5-8% acrylate-terminated polydimethylsiloxane, 8%-12% active diluent, 4%-6% adhesion promoter, 2%-3% photoinitiator, 0.2%-0.5% light stabilizer, and the sum of the proportions by weight of the raw materials is 100%. The preparation method of the core-shell rubber particles comprises the following steps: S1: in a nitrogen atmosphere, deionized water and sodium dodecyl sulfate are added to a reaction kettle for dispersion, and core layer monomers and divinylbenzene are blended and then added to the reaction kettle, the temperature is controlled at 70-80 DEG C, potassium persulfate is added, and reaction is carried out for 3-6 hours to obtain component one; S2: component one is controlled at a temperature of 65-70 DEG C, shell layer monomers and allyl methacrylate are blended and then added to the reaction kettle, and reaction is carried out at a temperature of 75-80 DEG C for 1-2 hours and then at a temperature of 75-80 DEG C for 2-4 hours to obtain component two; S3: component two is controlled at a temperature of 75-80 DEG C, hydroxyethyl methacrylate and ethylene glycol dimethacrylate are blended and then added to the reaction kettle, and reaction is carried out at a temperature of 80-85 DEG C for 1-3 hours, followed by filtration and spray drying to obtain the core-shell rubber particles; The preparation method of the acrylate-terminated polydimethylsiloxane comprises the following steps: In a nitrogen atmosphere, hydrogen-containing polydimethylsiloxane, toluene and hydroquinone are added to a reaction kettle for dispersion, the temperature is controlled at 60-70 DEG C, hydroxyethyl acrylate is added, and reaction is carried out at a temperature of 80-100 DEG C for 5-6 hours, followed by vacuum distillation, cooling to room temperature and filtration to obtain the acrylate-terminated polydimethylsiloxane; The coating layer comprises raw materials in the following proportions by weight: 50%-60% flexible polyether polyurethane acrylate, 30%-40% perfluoropolyether modified acrylate, 5%-8% amino-modified nano boron nitride, 0.2%-0.3% polyacrylate dispersant, 0.5%-1% acrylate modified fluorine-containing surfactant, 1%-2% KH-550, 0.8-1% photoinitiator, and 0.2%-0.5% auxiliary initiator, and the sum of the proportions by weight of the raw materials is 100%.

2. A spider web fiber ribbon optical cable according to claim 1, wherein In S1, the core layer monomers are composed of butyl acrylate and ethylhexyl acrylate in a mass ratio of 60-70:20-30; and the addition ratio of deionized water, sodium dodecyl sulfate, core layer monomers, divinylbenzene and potassium persulfate is 100-150 mL:0.3-0.5 g:60-90 g:0.3-0.5 g:0.1-0.2 g.

3. A spider web fiber ribbon optical cable according to claim 1, wherein In S2, the shell layer monomers are composed of methyl methacrylate and styrene in a mass ratio of 8.5-9:

1. The adding amount of the shell monomer is 8%-15% of the total mass of the core monomer; and the adding amount of the allyl methacrylate is 3-5% of the total mass of the shell monomer.

4. A spider web fiber ribbon optical cable according to claim 1, wherein The adding amount of the hydroxyethyl methacrylate in S3 is 2%-8% of the total mass of the shell monomer; and the adding amount of the ethylene glycol dimethacrylate is 0.5%-3% of the total mass of the shell monomer.

5. A spider web fiber ribbon optical cable according to claim 1, wherein The preparation method of the amino-modified nano boron nitride comprises the following steps: The hydroxylated boron nitride, KH550, anhydrous ethanol and deionized water are added into a reaction kettle, the temperature is controlled at 50-60 DEG C, and heat preservation treatment is performed for 2-4 hours, and then washing, drying and obtaining the amino-modified nano boron nitride are performed.

6. A spider web fiber ribbon optical cable according to claim 5, wherein, The preparation method of the hydroxylated boron nitride comprises the following steps: the nano boron nitride and sodium hydroxide solution are added into a reaction kettle, the temperature is controlled at 90-95 DEG C, heat preservation reaction is performed for 3-6 hours, and then washing, drying and obtaining the hydroxylated boron nitride are performed. The adding ratio of the hydroxylated boron nitride, KH550, anhydrous ethanol and deionized water is 10g:1-2g:40-80mL:10-20mL.

7. A spider web fiber ribbon optical cable according to claim 1, wherein The protection unit comprises an aerogel buffer layer wrapped on the surface of the hollow core fiber band unit and a woven aramid fiber layer uniformly distributed on the outer surface of the aerogel buffer layer.

8. A method of making a spider web fiber optic ribbon cable according to any of claims 1-7, wherein, The method comprises the following steps: the spider web structure cladding hollow core fiber wrapped with a coating layer is placed in an arrangement mold at intervals, a gap is filled with an adhesive, and curing treatment is performed to obtain a hollow core fiber band unit. The hollow core fiber band unit is wrapped with a central reinforcing member. The protection unit and the sheath layer are wrapped outside the hollow core fiber band unit in sequence to obtain a spider web fiber band optical cable.