Embedded optical fiber temperature measurement integrated optical cable and process

Abstract

The present application relates to the technical field of optical cable, in particular to embedded optical fiber temperature measurement integrated optical cable and process, the process of embedded optical fiber temperature measurement integrated optical cable, comprising: preparation of flame-retardant filler, hydrophobic modification of flame-retardant filler, preparation of hydrophobic anti-icing coating, preparation of integrated optical cable, the present application forms dense carbon layer and releases inert gas to prevent fire through phosphorus-nitrogen-zinc synergistic flame-retardant system, and the filler structure is stable, avoiding component migration damage temperature measurement optical fiber;Second, the rosin hydrophobic modifier is used to modify the flame-retardant filler, the water absorption rate is reduced to prevent water from penetrating, and aging resistance is also achieved, which guarantees temperature measurement function and prolongs the service life of optical cable;Third, the hydrophobic anti-fouling attapulgite coating can prevent water from adhering, inhibit pollutant adsorption to resist icing, and can also enhance the mechanical properties of the coating, ensure stable adhesion, and reduce winter maintenance cost.

Description

Technical Field

[0001] This invention relates to the field of optical cable technology, specifically to an embedded optical fiber temperature measurement integrated optical cable and its manufacturing process. Background Technology

[0002] Embedded fiber optic temperature measurement cables, as key devices integrating signal transmission and real-time temperature monitoring, are widely used in power transmission lines, new energy storage power stations, industrial high-temperature equipment monitoring, building fire protection and security, and other fields. They need to be exposed to complex outdoor environments such as wind and rain, alternating high and low temperatures, humidity and corrosion, and even potential open flames for extended periods. This requires not only high strength and tensile strength in the overall cable structure, but also stringent requirements for the flame-retardant safety, hydrophobic surface, anti-aging durability of the protective sheath, and the overall anti-icing capability of the cable. Simultaneously, the manufacturing process must balance efficiency and performance stability to ensure that all functions work synergistically.

[0003] Currently, embedded fiber optic temperature measurement integrated optical cables and their corresponding processes suffer from several technical challenges: First, regarding flame retardant performance and process compatibility, existing optical cable protective sleeves mostly use a single flame retardant. On the one hand, the flame retardant efficiency is low, making it difficult to quickly stop the spread of flames; on the other hand, the lack of a stable composite design for flame retardant components in the process leads to the flame retardant easily agglomerating during the extrusion molding of the protective sleeve, or migrating and volatilizing during long-term use, resulting in softening and cracking of the protective sleeve, directly damaging the structural integrity of the internal temperature-measuring optical fiber, and causing the temperature measurement function to fail. Second, regarding the synergy between hydrophobicity, anti-aging properties, and the optical cable structure, existing processes only focus on the basic processing of the protective sleeve substrate, without targeted hydrophobic modification of the flame-retardant filler, and neglect the sealing treatment of easily permeable parts such as optical cable joints and cable core gaps. This allows corrosive media such as moisture and salt to easily penetrate into the optical cable, not only causing a decrease in the rigidity of the protective sleeve structure and displacement or even breakage of the optical fiber, but also accelerating the aging and degradation of the cable core material, significantly shortening the overall service life of the optical cable. Furthermore, optical cables are exposed to outdoor wind, rain, and alternating high and low temperatures for extended periods. In winter, the surface of the optical cable is prone to icing due to water accumulation, dust, and oil adsorption. The weight of the ice layer can cause the optical cable to deform, affecting the accuracy of temperature measurement and the stability of signal transmission.

[0004] The aforementioned problems severely restrict the environmental adaptability and functional stability of the embedded fiber optic temperature measurement integrated cable, making it unable to meet the usage requirements in complex scenarios. There is an urgent need to optimize the embedded fiber optic temperature measurement integrated cable and its process, and solve the core technical bottlenecks such as flame retardancy, hydrophobicity, and anti-icing. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide an embedded fiber optic temperature measurement integrated optical cable and process.

[0006] This invention provides a process for an embedded fiber optic temperature measurement integrated optical cable, comprising:

[0007] S1: Preparation of flame-retardant filler;

[0008] The flame-retardant filler is prepared from pentaerythritol, phytic acid, melamine, zinc nitrate hexahydrate and 2-methyl imidazole;

[0009] S2: Hydrophobic modification of flame-retardant filler;

[0010] The rosin hydrophobic modifier is prepared from refined rosin acid, epoxy chloropropane and benzyl triethyl ammonium chloride, and the flame-retardant filler is hydrophobically modified by the rosin hydrophobic modifier to obtain the hydrophobic flame-retardant filler;

[0011] S3: Preparation of hydrophobic anti-icing coating;

[0012] The anti-fouling modifier is prepared by adding thymol into tetrahydrofuran THF and then adding 3-(triethoxysilyl) propyl isocyanate, the anti-fouling modified attapulgite is prepared by modifying the nano attapulgite with the anti-fouling modifier, the hydrophobically modified attapulgite is prepared by modifying the nano attapulgite with fluoro-silane coupling agent FAS-17, and the hydrophobic anti-icing coating is prepared from epoxy resin, curing agent, anti-fouling modified attapulgite, hydrophobically modified attapulgite and acetone as raw materials;

[0013] S4: Preparation of integrated optical cable;

[0014] The protective sleeve material is prepared from high-density polyethylene, antioxidant, stabilizer, lubricant, calcium carbonate, compatibilizer and hydrophobic flame-retardant filler as raw materials, the insulating shielding layer is extruded and coated on the outside of the optical unit cable core, and the temperature measuring optical fiber cable is laid in the insulating shielding layer in the form of a sine wave; the insulating layer is extruded and coated on the outside of the insulating shielding layer; then the protective sleeve material is melt-extruded to wrap the surface of the insulating layer, and finally the hydrophobic anti-icing coating is sprayed, and the integrated optical cable is obtained after curing.

[0015] As a preferred aspect, S1: Preparation of flame-retardant filler, specifically comprising the following steps:

[0016] S1.1: Under the protection of flowing nitrogen, 12-15 parts by weight of pentaerythritol is added to 35-40 parts by weight of 70wt% phytic acid aqueous solution, stirred and mixed at 200-230 r / min for 30-40 min, and heated to 120-130℃, 1-2 parts by weight of p-toluenesulfonic acid is added, and stirred at 500-600 rpm for 12-14 h to obtain a viscous reaction solution;

[0017] S1.2: 12-15 parts by weight of melamine is added to 300-320 parts by weight of methanol at 50-55°C, then a viscous reaction solution is added, and the temperature is raised to 80-82°C, and the reaction is condensed and refluxed at 400-420 rpm for 8-10 h, after the reaction is completed, vacuum is maintained at 120-130°C for 1-2 h, after cooling to room temperature, liquid nitrogen is used for cooling again, grinding and crushing to obtain a powdery product;

[0018] S1.3: 40-50 parts by weight of the powdery product is added to 300-320 parts by weight of methanol at 50-55°C, then ammonia water is added to adjust the pH to 7, then 10-12 parts by weight of zinc nitrate hexahydrate is added, ultrasonic dispersion is carried out for 10-20 min, then the reaction is stirred at 50-56°C and 500-800 rpm for 12-14 h, after the reaction is completed, filtration is carried out to obtain an intermediate product;

[0019] S1.4: 10-12 parts by weight of 2-methylimidazole is added to 300-320 parts by weight of methanol at 50-55°C, then the intermediate product is added, stirring is carried out at 500-800 rpm for 30-40 min, then it is left to stand at room temperature for 24-26 h, then suction filtration is carried out, the product after suction filtration is washed with methanol by centrifugation for 3-5 times, and drying is carried out to obtain a flame-retardant filler.

[0020] As a preferred aspect, S2: hydrophobic modification of the flame-retardant filler, specifically comprising the following steps:

[0021] S2.1: 50-80 parts by weight of refined rosin acid, 150-180 parts by weight of epichlorohydrin and 1.5-1.8 parts by weight of benzyltriethylammonium chloride are mixed, then condensation reflux reaction is carried out at 117-120°C for 2-3 h, after the reaction is completed, the temperature is cooled to 60-65°C, then 10-12 parts by weight of sodium hydroxide is added, reaction is carried out at 60-65°C for 3-4 h, after the reaction is completed, filtration is carried out with diatomite and filter paper respectively, and the filtrate is vacuum distilled to obtain a rosin hydrophobic modifier;

[0022] S2.2: 2-3 parts by weight of the flame-retardant filler is added to 40-50 parts by weight of N, N-dimethylformamide DMF, then ultrasonic dispersion is carried out for 30-40 min, then 3-5 parts by weight of the rosin hydrophobic modifier and 0.3-0.5 parts by weight of tetrabutylammonium bromide are added, the temperature is raised to 80-82°C under nitrogen protection, reaction is carried out for 24-26 h, after the reaction is completed, centrifugal washing is carried out, then the solvent is replaced with methanol for 3-5 times, and finally vacuum drying is carried out to obtain a hydrophobic flame-retardant filler.

[0023] As a preferred aspect, S3: preparation of the hydrophobic anti-icing coating, specifically comprising the following steps:

[0024] S3.1: 1.5-2.0 parts by weight of thymol was added to 20-30 parts by weight of THF, after stirring and dissolving, 3-(triethoxysilyl) propyl isocyanate was added, the molar ratio of thymol and 3-(triethoxysilyl) propyl isocyanate was 1:1, then 0.2-0.3 parts by weight of dibutyltin dilaurate was added, then the reaction was stirred at 65-70°C under nitrogen atmosphere at 300-500 rpm for 2-3 h, then rotary evaporation was performed on a rotary evaporator for 1-2 h to obtain the antifouling modifier;

[0025] S3.2: 36-40 parts by weight of ethanol and 4-6 parts by weight of deionized water were mixed, then 4-5 parts by weight of the antifouling modifier was added, stirred and mixed for 20-30 min, then hydrochloric acid was added to adjust the pH to 3-4, then 4-6 parts by weight of nano-palygorskite was added, ultrasonic dispersion was performed for 15-20 min, then magnetic stirring reaction was performed at 50-55°C for 2-3 h, then centrifugation, washing and drying were performed to obtain the antifouling modified palygorskite;

[0026] S3.3: 5-8 parts by weight of nano-palygorskite was mixed with 10-12 parts by weight of 20 wt% hydrochloric acid solution, reflux stirring reaction was performed at 40-50°C for 2-3 h, then centrifugation, washing and drying were performed, then the obtained acid-activated palygorskite was added to 20-30 parts by weight of 70 wt% ethanol solution, ultrasonic dispersion was performed for 20-30 min, then 5-8 parts by weight of fluorosilane coupling agent FAS-17 was added, then hydrochloric acid was added to adjust the pH to 5-6, reflux reaction was performed at 60-70°C for 6-8 h, then centrifugation, washing and drying were performed to obtain the hydrophobic modified palygorskite;

[0027] S3.4: 30-50 parts by weight of epoxy resin, 15-20 parts by weight of polyamide curing agent, 3-5 parts by weight of antifouling modified palygorskite and 3-5 parts by weight of hydrophobic modified palygorskite were mixed, then 40-50 parts by weight of acetone was added, then magnetic stirring was performed at 1000-1200 r / min for 20-30 min to obtain the hydrophobic anti-icing coating.

[0028] As a preferred aspect, S4: preparation of an integral optical cable, specifically comprising the following steps:

[0029] S4.1: 30-40 parts by weight of high-density polyethylene, 2-3 parts by weight of antioxidant 1010, 2-3 parts by weight of calcium-zinc composite stabilizer, 2-3 parts by weight of polyethylene wax, 3-5 parts by weight of calcium carbonate, 1-2 parts by weight of maleic anhydride grafted polyethylene and 5-8 parts by weight of hydrophobic flame retardant filler were added to a mixer, stirred and mixed at 800-1000 rpm and 90-100°C for 8-10 min, then extruded and granulated in a twin-screw extruder to obtain the protective sleeve material;

[0030] S4.2: the plurality of optical fibers are arranged in the bundle tube to obtain an optical unit cable core, a semi-conductive cross-linked polyethylene is extruded as an insulation shielding layer outside the optical unit cable core, and the temperature measuring optical fiber cable is arranged in the insulation shielding layer in a sinusoidal wave form; then cross-linked polyethylene is extruded as an insulation layer outside the insulation shielding layer; then a protective sleeve material is melt-extruded at 180-220 DEG C to wrap the surface of the insulation layer to obtain an integrated optical cable body, and a hydrophobic anti-icing coating is sprayed on the surface of the integrated optical cable body to obtain an integrated optical cable after curing at 60 DEG C for 4 hours.

[0031] As a preferred aspect, the insulation shielding layer in step S4.2 is a semi-conductive cross-linked polyethylene.

[0032] As a preferred aspect, the insulation layer in step S4.2 is a cross-linked polyethylene.

[0033] The application also provides an embedded optical fiber temperature measurement integrated optical cable prepared by any of the processes of the embedded optical fiber temperature measurement integrated optical cable.

[0034] The application has the following advantages:

[0035] The application generates a phosphorus-containing polyol derivative by reacting phytic acid with pentaerythritol, and the phosphorus element is a key flame-retardant component that can form a flame-retardant carbon layer to isolate oxygen and heat during combustion. Then melamine is introduced, and the nitrogen element contained therein can release inert gas at high temperatures, which can not only dilute combustible gas but also produce a "phosphorus-nitrogen synergistic effect" with the phosphorus element, greatly improving the flame-retardant effect and being more efficient than single phosphorus or nitrogen flame retardants. Finally, a metal-organic framework structure is constructed by zinc ions and 2-methylimidazole, and the zinc element can further strengthen the compactness of the carbon layer, while the porous structure of the metal-organic framework structure can adsorb part of the combustion products, reducing the release of smoke and toxic gas. The prepared flame-retardant filler has multiple synergistic effects, and the phosphorus-nitrogen-zinc synergistic flame-retardant system in the filler can quickly form a dense carbon layer and release inert gas when the optical cable encounters an open flame, preventing the spread of flames. The flame-retardant filler forms a stable composite structure through multiple reactions, and during the extrusion of the optical cable protective sleeve and subsequent use, there is no problem of migration and volatilization of flame-retardant components, avoiding the softening and cracking of the protective sleeve due to the loss of components, and further damaging the internal temperature measuring optical fiber.

[0036] The present application is a rosin hydrophobic modifier prepared by the reaction of refined rosin acid and epichlorohydrin, containing a hydrophobic group, the rosin hydrophobic modifier is grafted to the surface of the flame-retardant filler to build a hydrophobic layer on the surface of the flame-retardant filler, which greatly reduces the water absorption rate, the hydrophobic flame-retardant filler can prevent water from penetrating into the protective sleeve, maintain the structural rigidity of the protective sleeve, avoid problems such as fiber displacement and breakage caused by material softening, and ensure the long-term effectiveness of the temperature measurement function, the hydrophobic layer can reduce the contact between corrosive media such as water and salt and the protective sleeve matrix, and the stable structure of the flame-retardant filler itself can enhance the anti-aging performance of the protective sleeve, so that the protective sleeve is not prone to cracking and embrittlement under harsh conditions such as rain, and the internal cable core is protected for a long time, prolonging the overall service life of the optical cable.

[0037] The present application adopts hydrophobic modified attapulgite and antifouling modified attapulgite to prepare a hydrophobic anti-icing coating, the hydrophobic modified attapulgite forms a low surface energy layer on the surface of the coating, reduces the surface tension, makes it difficult for water to adhere and quickly roll off, and reduces the water residence time; the antifouling modifier molecule generated by the reaction of thymol and 3-(triethoxysilyl) propyl isocyanate contains phenolic hydroxyl groups with anti-attachment properties, which can inhibit the adsorption of dust, oil stains and other pollutants on the surface of the coating; at the same time, the siloxane groups can be combined with the hydroxyl groups on the surface of the attapulgite, fixing the antifouling function on the matrix, so that the antifouling modified attapulgite contains anti-attachment groups, inhibiting the adsorption of dust and oil stains on the surface of the optical cable, avoiding the exacerbation of icing caused by the adsorption of pollutants and water, and prolonging the "ice-free running" window of the optical cable, reducing the winter deicing maintenance cost, the rod-like structure of the nano attapulgite enhances the mechanical properties of the coating, and the epoxy resin ensures the stable adhesion of the coating, so that the hydrophobic anti-icing function is maintained for a long time, and the performance failure caused by coating damage is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 The process flow chart of the embedded optical fiber temperature measurement integrated optical cable used in the embodiments of the present application. DETAILED DESCRIPTION

[0039] In order to enable personnel in the technical field to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application.

[0040] Embodiment 1, the process of the embedded optical fiber temperature measurement integrated optical cable, refer to Figure 1 , including:

[0041] S1: Preparation of flame-retardant filler:

[0042] S1.1: Under the protection of flowing nitrogen, 12 parts by weight of pentaerythritol was added to 35 parts by weight of 70wt% phytic acid aqueous solution, stirred at 200r / min for 30 min, and heated to 120℃, 1 part by weight of p-toluenesulfonic acid was added, stirred at 500rpm for 12h to obtain a viscous reaction solution;

[0043] S1.2: 12 parts by weight of melamine was added to 300 parts by weight of methanol at 50℃, then the viscous reaction solution was added, and heated to 80℃, and the condensation reflux reaction was carried out at 400rpm for 8h, after the reaction was completed, vacuum was kept at 120℃ for 1h, after cooling to room temperature, liquid nitrogen was used for cooling again, and the product was ground and crushed to obtain a powdery product;

[0044] S1.3: 40 parts by weight of the powdery product was added to 300 parts by weight of methanol at 50℃, then ammonia water was added to adjust the pH to 7, then 10 parts by weight of zinc nitrate hexahydrate was added, ultrasonic dispersion was carried out for 10 min, then the reaction was carried out at 50℃, 500rpm for 12h, after the reaction was completed, filtration was carried out to obtain an intermediate product;

[0045] S1.4: 10 parts by weight of 2-methylimidazole was added to 300 parts by weight of methanol at 50℃, then the intermediate product was added, stirred at 500rpm for 30 min, then placed at room temperature for 24h, then suction filtration was carried out, the product after suction filtration was washed with methanol by centrifugation for 3 times, and dried to obtain a flame-retardant filler.

[0046] S2: Hydrophobic modification of the flame-retardant filler:

[0047] S2.1: Under the protection of nitrogen atmosphere, 50 parts by weight of refined rosin acid, 150 parts by weight of epichlorohydrin and 1.5 parts by weight of benzyltriethylammonium chloride were mixed, then condensation reflux reaction was carried out at 117℃ for 2h, after the reaction was completed, the temperature was cooled to 60℃, then 10 parts by weight of sodium hydroxide was added, and reaction was carried out at 60℃ for 3h, after the reaction was completed, filtration was carried out with diatomite and filter paper respectively, and the filtrate was vacuum distilled to obtain a rosin hydrophobic modifier;

[0048] S2.2: 2 parts by weight of the flame-retardant filler was added to 40 parts by weight of DMF, then ultrasonic dispersion was carried out for 30 min, then 3 parts by weight of the rosin hydrophobic modifier and 0.3 parts by weight of tetrabutylammonium bromide were added, the temperature was increased to 80℃ under the protection of nitrogen, and reaction was carried out for 24h, after the reaction was completed, centrifugal washing was carried out, then the solvent was replaced with methanol for 3 times, and finally vacuum drying was carried out to obtain a hydrophobic flame-retardant filler;

[0049] S3: Preparation of the hydrophobic anti-icing coating:

[0050] S3.1: 1.5 parts by weight of thymol was added to 20 parts by weight of THF, after stirring and dissolving, 3-(triethoxysilyl) propyl isocyanate was added, the molar ratio of thymol and 3-(triethoxysilyl) propyl isocyanate was 1:1, then 0.2 parts by weight of dibutyltin dilaurate was added, then the reaction was stirred at 65°C under nitrogen atmosphere at 300 rpm for 2h, then rotary evaporation was performed on a rotary evaporator for 1h to obtain the antifouling modifier;

[0051] S3.2: 36 parts by weight of ethanol and 4 parts by weight of deionized water were mixed, then 4 parts by weight of the antifouling modifier was added, stirred and mixed for 20 min, then hydrochloric acid was added to adjust the pH to 3, then 4 parts by weight of nano-palygorskite was added, ultrasonic dispersion was performed for 15 min, then magnetic stirring reaction was performed at 50°C for 2h, then centrifugation, washing and drying were performed to obtain the antifouling modified palygorskite;

[0052] S3.3: 5 parts by weight of nano-palygorskite was mixed with 10 parts by weight of 20wt% hydrochloric acid solution, reflux stirring reaction was performed at 40°C for 2h, then centrifugation, washing and drying were performed, then the obtained acid-activated palygorskite was added to 20 parts by weight of 70wt% ethanol solution, ultrasonic dispersion was performed for 20 min, then 5 parts by weight of fluorosilane coupling agent FAS-17 was added, then hydrochloric acid was added to adjust the pH to 5, reflux reaction was performed at 60°C for 6h, then centrifugation, washing and drying were performed to obtain the hydrophobic modified palygorskite;

[0053] S3.4: 30 parts by weight of epoxy resin, 15 parts by weight of polyamide curing agent, 3 parts by weight of antifouling modified palygorskite and 3 parts by weight of hydrophobic modified palygorskite were mixed, then 40 parts by weight of acetone was added, then magnetic stirring was performed at 1000r / min for 20 min to obtain the hydrophobic anti-icing coating.

[0054] S4: Preparation of the integral optical cable:

[0055] S4.1: 30 parts by weight of high-density polyethylene, 2 parts by weight of antioxidant 1010, 2 parts by weight of calcium-zinc composite stabilizer, 2 parts by weight of polyethylene wax, 3 parts by weight of calcium carbonate, 1 part by weight of maleic anhydride grafted polyethylene and 5 parts by weight of hydrophobic flame-retardant filler were added to a mixer, stirred and mixed at 800 rpm and 90°C for 8 min, then sent to a twin-screw extruder for extrusion granulation to obtain the protective sleeve material;

[0056] S4.2: The plurality of optical fibers are arranged in the bundle tube to obtain an optical unit cable core, a semi-conductive cross-linked polyethylene is extruded as an insulating shielding layer outside the optical unit cable core, and the temperature measuring optical fiber cable is arranged in the insulating shielding layer in the form of a sine wave; then cross-linked polyethylene is extruded as an insulating layer outside the insulating shielding layer; then a protective sleeve material is melt-extruded at 180°C to wrap the surface of the insulating layer to obtain an integrated optical cable body, and a hydrophobic anti-icing coating is sprayed on the surface of the integrated optical cable body, and the integrated optical cable is obtained after curing at 60°C for 4h.

[0057] Embodiment 2, process of embedded optical fiber temperature measurement integrated optical cable, see Figure 1 , comprising:

[0058] S1: Preparation of flame-retardant filler:

[0059] S1.1: Under the protection of flowing nitrogen, 15 parts by weight of pentaerythritol is added to 40 parts by weight of 70wt% phytic acid aqueous solution, stirred at 230r / min for 40min, and heated to 130°C, 2 parts by weight of p-toluenesulfonic acid is added, stirred at 600rpm for 14h to obtain a viscous reaction solution;

[0060] S1.2: 15 parts by weight of melamine is added to 320 parts by weight of methanol at 55°C, then the viscous reaction solution is added, and the temperature is raised to 82°C, and the condensation reflux reaction is carried out at 420rpm for 10h, after the reaction is completed, vacuum is kept at 130°C for 2h, after cooling to room temperature, liquid nitrogen is used for cooling again, grinding and crushing to obtain a powdery product;

[0061] S1.3: 50 parts by weight of the powdery product is added to 320 parts by weight of methanol at 55°C, then ammonia water is added to adjust the pH to 7, then 12 parts by weight of zinc nitrate hexahydrate is added, ultrasonic dispersion is carried out for 20min, then stirring reaction is carried out at 56°C and 800rpm for 14h, after the reaction is completed, filtration is carried out to obtain an intermediate product;

[0062] S1.4: 12 parts by weight of 2-methylimidazole is added to 320 parts by weight of methanol at 55°C, then the intermediate product is added, stirred at 800rpm for 40min, then left at room temperature for 26h, then suction filtration is carried out, the product after suction filtration is washed with methanol by centrifugation for 5 times, and dried to obtain the flame-retardant filler.

[0063] S2: Hydrophobic modification of the flame-retardant filler:

[0064] S2.1: 80 parts by weight of refined rosin acid, 180 parts by weight of epichlorohydrin and 1.8 parts by weight of benzyl triethyl ammonium chloride were mixed under the protection of nitrogen atmosphere, and then condensed and refluxed at 120°C for 3h. After the reaction was completed, it was cooled to 65°C, and then 12 parts by weight of sodium hydroxide was added. The reaction was carried out at 65°C for 4h. After the reaction was completed, diatomite and filter paper were used for filtration respectively. The filtrate was vacuum distilled to obtain a rosin hydrophobic modifier;

[0065] S2.2: 3 parts by weight of flame-retardant filler was added to 50 parts by weight of DMF, and then ultrasonic dispersion was carried out for 40 min. Then 5 parts by weight of rosin hydrophobic modifier and 0.5 parts by weight of tetrabutyl ammonium bromide were added. The temperature was raised to 82°C under the protection of nitrogen, and the reaction was carried out for 26h. After the reaction was completed, centrifugal washing was carried out, and then the solvent was replaced with methanol for 5 times. Finally, vacuum drying was carried out to obtain a hydrophobic flame-retardant filler.

[0066] S3: Preparation of hydrophobic anti-icing coating

[0067] S3.1: 2.0 parts by weight of thymol was added to 30 parts by weight of THF. After stirring and dissolving, 3-(triethoxysilyl) propyl isocyanate was added. The molar ratio of thymol and 3-(triethoxysilyl) propyl isocyanate was 1:1. Then 0.3 parts by weight of dibutyltin dilaurate was added. Then the reaction was carried out at 70°C under the protection of nitrogen atmosphere and 500 rpm stirring for 3h. Then rotary evaporation was carried out for 2h by a rotary evaporator to obtain an antifouling modifier;

[0068] S3.2: 40 parts by weight of ethanol and 6 parts by weight of deionized water were mixed. Then 5 parts by weight of antifouling modifier was added. After stirring and mixing for 30 min, hydrochloric acid was added to adjust the pH to 4. Then 6 parts by weight of nano attapulgite was added. Ultrasonic dispersion was carried out for 20 min. Then the reaction was carried out at 55°C under magnetic stirring for 3h. Then centrifugal, washing and drying were carried out to obtain an antifouling modified attapulgite;

[0069] S3.3: 8 parts by weight of nano attapulgite was mixed with 12 parts by weight of 20wt% hydrochloric acid solution. The reaction was carried out at 50°C under reflux stirring for 3h. Then centrifugal washing and drying were carried out. Then the obtained acid-activated attapulgite was added to 30 parts by weight of 70wt% ethanol solution. Ultrasonic dispersion was carried out for 30 min. Then 8 parts by weight of fluorosilane coupling agent FAS-17 was added. Hydrochloric acid was added to adjust the pH to 6. The reaction was carried out at 70°C under reflux for 8h. Then centrifugal, washing and drying were carried out to obtain a hydrophobic modified attapulgite;

[0070] S3.4: 50 parts by weight of epoxy resin, 20 parts by weight of polyamide curing agent, 5 parts by weight of antifouling modified attapulgite and 5 parts by weight of hydrophobic modified attapulgite were mixed. Then 50 parts by weight of acetone was added. Then magnetic stirring was carried out at 1200r / min for 30 min to obtain a hydrophobic anti-icing coating.

[0071] S4: Preparation of the integrated optical cable:

[0072] S4.1: 40 parts by weight of high-density polyethylene, 3 parts by weight of antioxidant 1010, 3 parts by weight of calcium-zinc composite stabilizer, 3 parts by weight of polyethylene wax, 5 parts by weight of calcium carbonate, 2 parts by weight of maleic anhydride grafted polyethylene, and 8 parts by weight of hydrophobic flame-retardant filler were added to a mixer and stirred at 1000 rpm and 100°C for 10 min, and then extruded and granulated in a twin-screw extruder to obtain a protective sleeve material;

[0073] S4.2: A plurality of optical fibers were arranged in a bundle tube to obtain an optical unit cable core. A semiconductive crosslinked polyethylene was extruded as an insulating and shielding layer outside the optical unit cable core, and a temperature measuring optical fiber cable was arranged in the insulating and shielding layer in the form of a sine wave. Then, a crosslinked polyethylene was extruded as an insulating layer outside the insulating and shielding layer. Subsequently, the protective sleeve material was melt-extruded at 220°C to wrap the insulating layer, thereby obtaining an integrated optical cable base. The integrated optical cable base was sprayed with a hydrophobic anti-icing coating, and cured at 60°C for 4 h to obtain an integrated optical cable.

[0074] Example 3, process for embedding an optical fiber temperature measuring integrated optical cable, see Figure 1 , comprising:

[0075] S1: Preparation of the flame-retardant filler:

[0076] S1.1: Under the protection of flowing nitrogen, 13.5 parts by weight of pentaerythritol was added to 37.5 parts by weight of a 70 wt% aqueous phytic acid solution, stirred at 215 r / min for 35 min, and heated to 125°C. 1.5 parts by weight of p-toluenesulfonic acid was added, and stirred at 550 rpm for 13 h to obtain a viscous reaction solution;

[0077] S1.2: 13.5 parts by weight of melamine was added to 52.5 parts by weight of methanol at 310 parts by weight, and then the viscous reaction solution was added, and heated to 81°C. Condensation reflux reaction was carried out at 410 rpm for 9 h. After the reaction was completed, vacuum was maintained at 125°C for 1.5 h. After cooling to room temperature, liquid nitrogen was used for cooling again, and the product was ground and crushed to obtain a powdery product;

[0078] S1.3: 45 parts by weight of the powdery product was added to 310 parts by weight of methanol at 52.5°C, and then ammonia water was added to adjust the pH to 7. 11 parts by weight of zinc nitrate hexahydrate was added, ultrasonic dispersion was carried out for 15 min, and then stirring reaction was carried out at 53°C and 650 rpm for 13 h. After the reaction was completed, filtration was carried out to obtain an intermediate product;

[0079] S1.4: 11 parts by weight of 2-methylimidazole was added to 310 parts by weight of methanol at 52.5°C, then the intermediate product was added, stirred at 650 rpm for 35 min, then left to stand at room temperature for 25 h, then vacuum filtration was performed, and the product after vacuum filtration was washed with methanol by centrifugation 4 times, and dried to obtain the flame-retardant filler.

[0080] S2: Hydrophobic modification of the flame-retardant filler:

[0081] S2.1: 65 parts by weight of refined rosin acid, 165 parts by weight of epichlorohydrin and 1.65 parts by weight of benzyltriethylammonium chloride were mixed under the protection of nitrogen atmosphere, then condensed reflux reaction at 118.5°C for 2.5 h, after the reaction was completed, it was cooled to 62.5°C, then 11 parts by weight of sodium hydroxide was added, and reacted at 62.5°C for 3.5 h, after the reaction was completed, it was filtered with diatomite and filter paper respectively, and the filtrate was vacuum distilled to obtain a rosin hydrophobic modifier;

[0082] S2.2: 2.5 parts by weight of the flame-retardant filler was added to 45 parts by weight of DMF, then ultrasonic dispersion for 35 min, then 4 parts by weight of the rosin hydrophobic modifier and 0.4 parts by weight of tetrabutylammonium bromide were added, and the temperature was raised to 81°C under nitrogen protection, and reacted for 25 h, after the reaction was completed, it was washed by centrifugation, then the solvent was replaced with methanol for 4 times, and finally vacuum dried to obtain the hydrophobic flame-retardant filler.

[0083] S3: Preparation of the hydrophobic anti-icing coating:

[0084] S3.1: 1.75 parts by weight of thymol was added to 25 parts by weight of THF, after stirring and dissolving, 3-(triethoxysilyl) propyl isocyanate was added, the molar ratio of thymol and 3-(triethoxysilyl) propyl isocyanate was 1:1, then 0.25 parts by weight of dibutyltin dilaurate was added, then the reaction was stirred at 67.5°C under nitrogen atmosphere at 400 rpm for 2.5 h, then rotary evaporation was performed on a rotary evaporator for 1.5 h to obtain an antifouling modifier;

[0085] S3.2: 38 parts by weight of ethanol and 5 parts by weight of deionized water were mixed, then 4.5 parts by weight of the antifouling modifier was added, stirred and mixed for 25 min, then hydrochloric acid was added to adjust the pH to 3.5, then 5 parts by weight of nano-palygorskite was added, ultrasonic dispersion was performed for 17.5 min, then magnetic stirring reaction was performed at 52.5°C for 2.5 h, then centrifugation, washing and drying were performed to obtain the antifouling modified palygorskite;

[0086] S3.3: 7.5 parts by weight of nanometer attapulgite was mixed with 11 parts by weight of 20wt% hydrochloric acid solution, and stirred at 45°C for 2.5h under reflux, and then centrifuged, washed, and dried, and then the obtained acid-activated attapulgite was added to 25 parts by weight of 70wt% ethanol solution, ultrasonically dispersed for 25min, and then 6.5 parts by weight of fluoro-silane coupling agent FAS-17 was added, and then hydrochloric acid was added to adjust the pH to 5.5, and then reacted at 65°C for 7h under reflux, and then centrifuged, washed, and dried to obtain hydrophobic modified attapulgite;

[0087] S3.4: 40 parts by weight of epoxy resin, 17.5 parts by weight of polyamide curing agent, 4 parts by weight of antifouling modified attapulgite, and 4 parts by weight of hydrophobic modified attapulgite were mixed, and then 45 parts by weight of acetone was added, and then stirred at 1100r / min for 25min by magnetic stirring to obtain a hydrophobic anti-icing coating.

[0088] S4: Preparation of an integral optical cable:

[0089] S4.1: 35 parts by weight of high-density polyethylene, 2.5 parts by weight of antioxidant 1010, 2.5 parts by weight of calcium-zinc composite stabilizer, 2.5 parts by weight of polyethylene wax, 4 parts by weight of calcium carbonate, 1.5 parts by weight of maleic anhydride grafted polyethylene, and 6.5 parts by weight of hydrophobic flame-retardant filler were added to a mixer, and stirred and mixed at 900rpm and 95°C for 9min, and then extruded and granulated by a twin-screw extruder to obtain a protective sleeve material;

[0090] S4.2: A plurality of optical fibers were arranged in a bundle tube to obtain an optical unit cable core, a semi-conductive crosslinked polyethylene was extruded and coated as an insulating shielding layer outside the optical unit cable core, and a temperature measuring optical fiber cable was arranged in the insulating shielding layer in a sinusoidal wave form; then a crosslinked polyethylene was extruded and coated as an insulating layer outside the insulating shielding layer; then the protective sleeve material was melt-extruded at 200°C to wrap the insulating layer, to obtain an integral optical cable base, and the hydrophobic anti-icing coating was sprayed on the surface of the integral optical cable base, and cured at 60°C for 4h to obtain an integral optical cable.

[0091] Comparative Example 1, compared with Example 1, the difference between Comparative Example 1 and Example 1 is that Comparative Example 1 removes steps S1-S2, and replaces the hydrophobic flame-retardant filler in step S4.1 with an equal amount of aluminum hydroxide, and the remaining steps are unchanged to prepare an integral optical cable, which is denoted as Comparative Example 1.

[0092] Comparative Example 2, compared with Example 1, the difference between Comparative Example 2 and Example 1 is that Comparative Example 2 removes steps S1-S2 and the hydrophobic flame-retardant filler in step S4.1, and the remaining steps are unchanged to prepare an integral optical cable, which is denoted as Comparative Example 2.

[0093] Comparative Example 3, compared with Example 1, the difference between Comparative Example 3 and Example 1 is that Comparative Example 3 removes step S2, replaces the hydrophobic flame-retardant filler in step S4.1 with an equal amount of flame-retardant filler, and the remaining steps remain unchanged to prepare an integral optical cable, which is denoted as Comparative Example 3.

[0094] Comparative Example 4, compared with Example 1, the difference between Comparative Example 4 and Example 1 is that Comparative Example 4 removes steps S3.1-S3.2, replaces the antifouling modified attapulgite in step S3.4 with an equal amount of hydrophobic modified attapulgite, and the remaining steps remain unchanged to prepare an integral optical cable, which is denoted as Comparative Example 4.

[0095] Comparative Example 5, compared with Example 1, the difference between Comparative Example 5 and Example 1 is that Comparative Example 5 removes step S3.3, replaces the hydrophobic modified attapulgite in step S3.4 with an equal amount of antifouling modified attapulgite, and the remaining steps remain unchanged to prepare an integral optical cable, which is denoted as Comparative Example 5.

[0096] Comparative Example 6, compared with Example 1, the difference between Comparative Example 6 and Example 1 is that Comparative Example 6 removes step S3, and the remaining steps remain unchanged to prepare an integral optical cable matrix, which is denoted as Comparative Example 6.

[0097] The integral optical cables prepared in Examples 1-3 and Comparative Examples 1-2 were subjected to flame-retardant performance determination, and the determination results are shown in Table 1.

[0098] Table 1 is the flame-retardant performance determination results of Examples 1-3 and Comparative Examples 1-2

[0099]

[0100] As can be seen from the data in Table 1, the flame-retardant filler prepared by the present application has better flame-retardant effect than the conventional flame-retardant agent of Comparative Example 1, by reacting phytic acid with pentaerythritol, then introducing melamine, and finally constructing a metal-organic framework structure by zinc ions and 2-methylimidazole.

[0101] The integral optical cables prepared in Examples 1-3 and Comparative Example 3 were placed in a humidity of 85% and a temperature of 40°C for 3 months, and then a force of 150kN / m was applied to determine the tearing and cracking of the integral optical cables before and after placement, and the determination results are shown in Table 2.

[0102] Table 2 is the tearing and cracking determination results of Examples 1-3 and Comparative Example 3

[0103]

[0104] From the data in Table 2, it can be seen that the present application uses rosin hydrophobic modifier to modify grafting to the surface of flame-retardant filler, which can reduce the hydrophobicity of the cable, avoid the softening of the protective sleeve due to water absorption in a humid environment, and avoid cracking and embrittlement, thereby prolonging the overall service life of the optical cable.

[0105] Anti-icing determination was performed on the integral optical cable prepared in Example 1-Example 3 and Comparative Example 4-Comparative Example 6: The integral optical cable prepared in Example 1-Example 3 and Comparative Example 4-Comparative Example 6 was placed in an environment of -20℃ and 80% humidity to determine the time for water droplets on the surface of the optical cable to freeze, and the determination results are shown in Table 3.

[0106] Table 3 is the anti-icing determination results of Example 1-Example 3 and Comparative Example 4-Comparative Example 6

[0107]

[0108] From the data in Table 3, it can be seen that the anti-fouling modified attapulgite has antibacterial and anti-adhesion properties, which can reduce surface contamination and maintain hydrophobicity. After the absence of the anti-fouling modified attapulgite, the surface is easily contaminated, which affects the anti-icing effect. Therefore, the anti-icing performance of Comparative Example 4 is reduced after removing the anti-fouling modified attapulgite. The hydrophobic modified attapulgite directly provides low surface energy, and the hydrophobicity of Comparative Example 5 is insufficient, and the ice forms faster. From the data of the examples and comparative examples, it can be seen that the anti-fouling modified attapulgite and the hydrophobic modified attapulgite have a synergistic effect, and the two form a micro-nano structure, which can significantly delay the formation of ice nuclei, thereby achieving the effect of anti-icing.

[0109] It should be understood that, for those skilled in the art, improvements or changes can be made according to the above description, and all these improvements and changes shall fall within the protection scope of the appended claims of the present application. The parts not described in detail in the specification belong to the prior art known to those skilled in the art.

Claims

1. Process for the production of an embedded optical fiber temperature measurement integrated optical cable, characterized in that, The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable.

2. The process for embedding a fiber optic temperature sensing integrated cable according to claim 1, wherein, The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. 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The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application relates to a preparation method of a hydrophobic anti-icing coating for an integrated optical cable. The application S1.4: 10-12 parts by weight of 2-methylimidazole is added to 300-320 parts by weight of methanol at 50-55°C, then the intermediate product is added, stirred at 500-800 rpm for 30-40 min, then left to stand at room temperature for 24-26 h, then filtered under suction, and the filtered product is washed with methanol by centrifugation for 3-5 times, and dried to obtain the flame-retardant filler.

3. The process for embedding the optical fiber temperature measurement integrated optical cable according to claim 2, wherein S2: hydrophobic modification of the flame-retardant filler, specifically comprising the following steps: S2.1: 50-80 parts by weight of refined rosin acid, 150-180 parts by weight of epichlorohydrin and 1.5-1.8 parts by weight of benzyltriethylammonium chloride are mixed under the protection of nitrogen atmosphere, then condensed reflux reaction at 117-120°C for 2-3 h, after the reaction is completed, cooled to 60-65°C, then 10-12 parts by weight of sodium hydroxide is added, 60-65°C reaction for 3-4 h, after the reaction is completed, filtered with diatomite and filter paper respectively, and the filtrate is vacuum distilled to obtain a rosin hydrophobic modifier; S2.2: 2-3 parts by weight of the flame-retardant filler is added to 40-50 parts by weight of DMF, then ultrasonic dispersion for 30-40 min, then 3-5 parts by weight of the rosin hydrophobic modifier and 0.3-0.5 parts by weight of tetrabutylammonium bromide are added, heated to 80-82°C under nitrogen protection, and reacted for 24-26 h, after the reaction is completed, centrifugal washing is performed, then the solvent is replaced with methanol for 3-5 times, and finally vacuum dried to obtain the hydrophobic flame-retardant filler.

4. The process for embedding a fiber optic temperature sensing integral cable of claim 3, wherein, S3: preparation of the hydrophobic anti-icing coating, specifically comprising the following steps: S3.1: 1.5-2.0 parts by weight of thymol is added to 20-30 parts by weight of THF, stirred and dissolved, then 3-(triethoxysilyl) propyl isocyanate is added, the molar ratio of thymol and 3-(triethoxysilyl) propyl isocyanate is 1:1, then 0.2-0.3 parts by weight of dibutyltin dilaurate is added, then stirred at 65-70°C under nitrogen atmosphere at 300-500 rpm for 2-3 h, then rotary evaporated for 1-2 h by a rotary evaporator to obtain the antifouling modifier; S3.2: 36-40 parts by weight of ethanol and 4-6 parts by weight of deionized water are mixed, then 4-5 parts by weight of the antifouling modifier is added, stirred and mixed for 20-30 min, then hydrochloric acid is added to adjust the pH to 3-4, then 4-6 parts by weight of nano-palygorskite is added, ultrasonic dispersed for 15-20 min, then reacted at 50-55°C under magnetic stirring for 2-3 h, then centrifuged, washed and dried to obtain the antifouling modified palygorskite; S3.3: 5-8 parts by weight of nanometer attapulgite is mixed with 10-12 parts by weight of 20wt% hydrochloric acid solution, and stirred and refluxed at 40-50℃ for 2-3h, and then centrifuged, washed and dried, and then the obtained acid-activated attapulgite is added to 20-30 parts by weight of 70wt% ethanol solution, ultrasonically dispersed for 20-30min, and then 5-8 parts by weight of fluoro-silane coupling agent FAS-17 is added, and then hydrochloric acid is added to adjust the pH to 5-6, and then refluxed at 60-70℃ for 6-8h, and then centrifuged, washed and dried to obtain hydrophobic modified attapulgite; S3.4: 30-50 parts by weight of epoxy resin, 15-20 parts by weight of polyamide curing agent, 3-5 parts by weight of antifouling modified attapulgite and 3-5 parts by weight of hydrophobic modified attapulgite are mixed, and then 40-50 parts by weight of acetone is added, and then magnetically stirred at 1000-1200r / min for 20-30min to obtain a hydrophobic anti-icing coating.

5. The process for manufacturing embedded fiber optic temperature sensing unitized cables of claim 3, wherein, S4: Preparation of an integrated optical cable, specifically comprising the following steps: S4.1: 30-40 parts by weight of high-density polyethylene, 2-3 parts by weight of antioxidant 1010, 2-3 parts by weight of calcium-zinc composite stabilizer, 2-3 parts by weight of polyethylene wax, 3-5 parts by weight of calcium carbonate, 1-2 parts by weight of maleic anhydride grafted polyethylene and 5-8 parts by weight of hydrophobic flame-retardant filler are added to a mixer, stirred and mixed at 800-1000rpm and 90-100℃ for 8-10min, and then sent to a twin-screw extruder for extrusion and granulation to obtain a protective sleeve material; S4.2: a plurality of optical fibers are arranged in a bundle tube to obtain an optical unit cable core, a semi-conductive crosslinked polyethylene is extruded as an insulating shielding layer outside the optical unit cable core, and a temperature measuring optical fiber cable is arranged in the insulating shielding layer in the form of a sine wave; then a crosslinked polyethylene is extruded as an insulating layer outside the insulating shielding layer; then the protective sleeve material is melt-extruded at 180-220℃ to wrap the insulating layer, to obtain an integrated optical cable base, and the hydrophobic anti-icing coating is sprayed on the surface of the integrated optical cable base, and the integrated optical cable is obtained after curing.

6. The process for manufacturing embedded fiber optic temperature sensing unitized cables of claim 5, wherein, The insulating shielding layer in step S4.2 is a semi-conductive crosslinked polyethylene.

7. The process for manufacturing embedded fiber optic temperature sensing unitized cables of claim 5, wherein, The insulating layer in step S4.2 is a crosslinked polyethylene.

8. An embedded fiber optic temperature sensing integrated cable, characterized by, It is prepared by the process of the embedded optical fiber temperature measurement integrated optical cable according to any one of claims 1-7.

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