A method for preparing a photoelectric composite floating cable

Abstract

The invention discloses a method for preparing a photoelectric composite floating cable, belonging to the technical field of floating cables. Fluorine-containing polycarbonate-polyether polyol, a catalyst and a foam stabilizer are added into a reaction kettle, and modified MDI is added under the condition of 25 DEG C after high-speed stirring, and then a fluorine-containing mercaptoacetamide antibacterial compound and 1,4-butanediol are added after high-speed stirring, and stirred for 1-2 min, and coated on the outer crop sheath layer of the photoelectric composite prefabricated cable, and the photoelectric composite floating cable is obtained after ripening at 20-30 DEG C. The fluorine-containing mercaptoacetamide antibacterial compound contains a hydroxyl group and a mercapto group, and the mercapto group has an antibacterial effect. The trifluoromethyl group in the fluorine-containing mercaptoacetamide antibacterial compound helps to increase the hydrophobicity of the sheath layer, reduce the attachment of microorganisms such as seaweed, reduce the erosion of the sheath layer, and help to increase the service life of the photoelectric composite floating cable.

Description

Technical Field

[0001] The invention belongs to the technical field of floating cables, and in particular relates to a method for preparing a photoelectric composite floating cable. Background Art

[0002] Floating cables are a new type in the cable industry. They are designed to meet the needs of the widespread offshore natural gas and oil extraction, underwater robot detection and other fields. In underwater operations at depths of hundreds or even thousands of meters, in addition to the necessary hardware instruments and facilities, cables for transmitting power and signal control are also required, such as optoelectronic composite cables. Optoelectronic composite cables integrate optical fibers and power transmission copper wires, and can solve broadband access, equipment power consumption, and signal transmission problems.

[0003] The requirements for cables used in underwater environments are often very stringent, and ordinary optoelectronic composite cables cannot meet their use requirements. When engineering equipment is used underwater, the cables will continue to fall, increasing the burden of moving the engineering equipment and easily causing both ends of the cables to fall off; and ordinary cables are easily damaged by aquatic organisms or rocks when dragging, making underwater operations difficult. The characteristics of floating cables are lightness, tensile strength, wear resistance, and resistance to seawater erosion. They can maintain the same density in the water, neither sinking nor floating, thereby reducing the impact on equipment operation. Since floating cables need to be used in water, after being soaked for a long time, microorganisms in the water will adhere to the surface of the floating cables, making them difficult to clean and affecting the service life of the cables. Summary of the invention

[0004] The purpose of the present invention is to provide a method for preparing a photoelectric composite floating cable, so as to solve the problem that the existing floating cable is easily attached by microorganisms and is difficult to clean.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A method for preparing a photoelectric composite floating cable comprises the following steps:

[0007] Step 1: Arrange the optical fiber, aramid reinforcing wire and metal conductor coated with an insulating layer into a bundle, then cover it with a tinned copper mesh shielding layer, extrude thermoplastic TPE on the outside as a protective layer, and obtain a photoelectric composite prefabricated cable;

[0008] Step 2: Add fluorinated polycarbonate-polyether polyol, catalyst and foam stabilizer into the reaction kettle, stir at 1500-2000r / min for 2-3min, then add modified MDI at 25°C, stir at 2000r / min for 8-16s, then add fluorinated mercaptoacetamide antibacterial compound and 1,4-butanediol, stir at 500-1000r / min for 1-2min, apply on the outer crop sheath layer of the photovoltaic composite prefabricated cable, and obtain the photovoltaic composite floating cable after aging at 20-30°C.

[0009] Furthermore, the usage ratio of the fluorinated polycarbonate-polyether polyol, catalyst, foam stabilizer, modified MDI, fluorinated mercaptoacetamide antibacterial compound and 1,4-butanediol is 250g: 0.54-0.56g: 0.6-0.8g: 126g: 42g: 18g.

[0010] Furthermore, the catalyst is dibutyltin dilaurate.

[0011] Further, the fluorinated polycarbonate-polyether polyol is prepared by the following steps:

[0012] 3,3'-difluoro-4,4'-dihydroxy-biphenyl is vacuum dried at 70-75°C, the dried 3,3'-difluoro-4,4'-dihydroxy-biphenyl and propylene oxide are added to a reaction kettle, stirred at 500-800 r / min for 20-30 min, and then dimethyl carbonate is added as a catalyst in a carbon dioxide atmosphere, the pressure is maintained at 4 MPa, and stirred at 95°C and 1000-1500 r / min for 6-6.5 h to obtain a fluorine-containing polycarbonate-polyether polyol;

[0013] Furthermore, the usage ratio of 3,3'-difluoro-4,4'-dihydroxy-biphenyl, propylene oxide and dimethyl carbonate is 22.2g:142-145g:22-24mg.

[0014] Furthermore, the fluorinated mercaptoacetamide antibacterial compound is prepared by the following steps:

[0015] Step 1: Add dimethyl sulfoxide as a solvent to a reaction kettle, then add 1-ethyl-(3-dimethylaminopropyl)carbodiimide and 1-hydroxybenzotriazole, 1-ethyl-(3-dimethylaminopropyl)carbodiimide as an activator, 1-hydroxybenzotriazole as a buffer, add thioglycolic acid at 0°C and under nitrogen protection, stir and activate at 200-500r / min for 20-30min, then add hydroxyethylethylenediamine to the reaction kettle, continue stirring and reacting for 4-5h, remove the solvent by rotary evaporation, wash with deionized water to remove the activator and buffer, and dry to obtain a thioglycolamide antibacterial compound;

[0016] Step 2: adding anhydrous ethanol and mercaptoacetamide antibacterial compound into a reaction kettle and stirring for 15-20 minutes, then adding trifluoroethyl methacrylate, reacting for 8-9 hours under nitrogen protection and 60° C., then extracting with chloroform for 3-5 times, and distilling under reduced pressure to obtain a fluorinated mercaptoacetamide antibacterial compound;

[0017] Furthermore, the usage ratio of dimethyl sulfoxide, 1-ethyl-(3-dimethylaminopropyl)carbodiimide, 1-hydroxybenzotriazole, thioglycolic acid and hydroxyethylethylenediamine is 40-60 mL: 5 g: 8 g: 1.5 g: 1.7 g.

[0018] Furthermore, the usage ratio of anhydrous ethanol, mercaptoacetamide antibacterial compound and trifluoroethyl methacrylate is 150mL:97.5g:125g.

[0019] Beneficial effects of the present invention:

[0020] The photoelectric composite floating cable prepared by the preparation method of the present invention adopts modified polyether polyurethane as the sheath layer material, which can inhibit the attachment of microorganisms, reduce the erosion of the sheath layer, and help to increase the service life of the photoelectric composite floating cable.

[0021] Fluoropolycarbonate-polyether polyol is prepared using 3,3'-difluoro-4,4'-dihydroxy-biphenyl and propylene oxide as raw materials, which helps to improve the tensile strength and elongation at break of the sheath layer, and introduces a large number of fluorine groups, which helps to increase the flame retardancy, chemical resistance and weather resistance of the sheath layer. Fluorine-containing mercaptoacetamide antibacterial compounds contain hydroxyl groups and mercapto groups, and mercapto groups have antibacterial effects. After the fluorine-containing mercaptoacetamide antibacterial compounds are dissolved in 1,4-butanediol, the hydroxyl groups therein can participate in the reaction and introduce macromolecular segments into the sheath layer material, which helps to increase the strength of the sheath layer. The large number of trifluoromethyl groups helps to increase the hydrophobicity of the sheath layer, greatly reducing the amount of microorganisms such as seaweed attached. DETAILED DESCRIPTION

[0022] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example 1

[0024] A method for preparing a photoelectric composite floating cable comprises the following steps:

[0025] Step 1: Add 4000L of dimethyl sulfoxide as a solvent to a reactor, then add 500kg of 1-ethyl-(3-dimethylaminopropyl)carbodiimide and 800kg of 1-hydroxybenzotriazole, 1-ethyl-(3-dimethylaminopropyl)carbodiimide as an activator, 1-hydroxybenzotriazole as a buffer, add 150kg of thioglycolic acid at 0°C and under nitrogen protection, stir and activate at 200r / min for 20min, then add 170kg of hydroxyethylethylenediamine to the reactor, continue stirring and reacting for 4h, remove the solvent by rotary evaporation, wash with deionized water to remove the activator and buffer, and dry to obtain a thioglycolamide antibacterial compound.

[0026] Step 2: Add 300L of anhydrous ethanol and 195kg of mercaptoacetamide antibacterial compound into a reactor and stir for 15 minutes, then add 250kg of trifluoroethyl methacrylate, react for 8 hours under nitrogen protection and 60°C, then extract with chloroform three times, and distill under reduced pressure to obtain a fluorinated mercaptoacetamide antibacterial compound.

[0027] Step 3: Vacuum dry 3,3'-difluoro-4,4'-dihydroxy-biphenyl at 70°C, add 22.2 kg of dried 3,3'-difluoro-4,4'-dihydroxy-biphenyl and 142 kg of propylene oxide into the reactor, stir at 500 r / min for 20 min, then add 22 g of dimethyl carbonate as a catalyst in an atmosphere of carbon dioxide gas, maintain the pressure at 4 MPa, and stir at 95°C and 1000 r / min for 6 h to obtain fluorinated polycarbonate-polyether polyol.

[0028] Step 4: Arrange the optical fiber, aramid reinforcing wire and metal conductor coated with an insulating layer into a bundle, then cover it with a tinned copper mesh shielding layer, extrude thermoplastic TPE on the outside as a protective layer to obtain a photovoltaic composite prefabricated cable.

[0029] Step 5: Add 250kg of fluorinated polycarbonate-polyether polyol, 0.54kg of dibutyltin dilaurate and 0.6kg of foam stabilizer into the reactor, stir at 1500r / min for 2min, then add 126kg of modified MDI at 25°C, stir at 2000r / min for 8s, then add 42kg of fluorinated mercaptoacetamide antibacterial compound and 18kg of 1,4-butanediol, stir at 500r / min for 2min, apply on the outer crop sheath layer of the photovoltaic composite prefabricated cable, and obtain the photovoltaic composite floating cable after aging at 20°C.

[0030] Example 2

[0031] A method for preparing a photoelectric composite floating cable comprises the following steps:

[0032] Step 1: Add 5000L of dimethyl sulfoxide as a solvent to a reactor, then add 500kg of 1-ethyl-(3-dimethylaminopropyl)carbodiimide and 800kg of 1-hydroxybenzotriazole, 1-ethyl-(3-dimethylaminopropyl)carbodiimide as an activator, 1-hydroxybenzotriazole as a buffer, add 150kg of thioglycolic acid at 0°C and under nitrogen protection, stir and activate at 350r / min for 25min, then add 170kg of hydroxyethylethylenediamine to the reactor, continue stirring and reacting for 4.5h, rotary evaporation to remove the solvent, wash with deionized water to remove the activator and buffer, and dry to obtain a thioglycolamide antibacterial compound.

[0033] Step 2: Add 300L of anhydrous ethanol and 195kg of mercaptoacetamide antibacterial compound into a reactor and stir for 18 minutes, then add 250kg of trifluoroethyl methacrylate, react for 8.5 hours under nitrogen protection and 60°C, then extract with chloroform 4 times, and distill under reduced pressure to obtain a fluorinated mercaptoacetamide antibacterial compound.

[0034] Step 3: Vacuum dry 3,3'-difluoro-4,4'-dihydroxy-biphenyl at 70-75°C, add 22.2 kg of dried 3,3'-difluoro-4,4'-dihydroxy-biphenyl and 143 kg of propylene oxide into the reactor, stir at 600 r / min for 25 min, then add 23 g of dimethyl carbonate as a catalyst in an atmosphere of carbon dioxide gas, maintain the pressure at 4 MPa, stir at 95°C and 1250 r / min for 6.2 h to obtain fluorinated polycarbonate-polyether polyol.

[0035] Step 4: Arrange the optical fiber, aramid reinforcing wire and metal conductor coated with an insulating layer into a bundle, then cover it with a tinned copper mesh shielding layer, extrude thermoplastic TPE on the outside as a protective layer to obtain a photovoltaic composite prefabricated cable.

[0036] Step 5: Add 250kg of fluorinated polycarbonate-polyether polyol, 0.55kg of dibutyltin dilaurate and 0.7kg of foam stabilizer into the reactor, stir at 1800r / min for 2.5min, then add 126kg of modified MDI at 25°C, stir at 2000r / min for 12s, then add 42kg of fluorinated mercaptoacetamide antibacterial compound and 18kg of 1,4-butanediol, stir at 800r / min for 2.5min, apply on the outer crop sheath layer of the photovoltaic composite prefabricated cable, and obtain the photovoltaic composite floating cable after aging at 25°C.

[0037] Example 3

[0038] A method for preparing a photoelectric composite floating cable comprises the following steps:

[0039] Step 1: Add 6000L of dimethyl sulfoxide as a solvent to a reactor, then add 500kg of 1-ethyl-(3-dimethylaminopropyl)carbodiimide and 800kg of 1-hydroxybenzotriazole, 1-ethyl-(3-dimethylaminopropyl)carbodiimide as an activator, 1-hydroxybenzotriazole as a buffer, add 150kg of thioglycolic acid at 0°C and under nitrogen protection, stir and activate at 500r / min for 30min, then add 170kg of hydroxyethylethylenediamine to the reactor, continue stirring and reacting for 5h, remove the solvent by rotary evaporation, wash with deionized water to remove the activator and buffer, and dry to obtain a thioglycolamide antibacterial compound.

[0040] Step 2: Add 300L of anhydrous ethanol and 195kg of mercaptoacetamide antibacterial compound into a reactor and stir for 20 minutes, then add 250kg of trifluoroethyl methacrylate, react for 9 hours under nitrogen protection and 60°C, then extract with chloroform 5 times, and distill under reduced pressure to obtain a fluorinated mercaptoacetamide antibacterial compound.

[0041] Step 3: Vacuum dry 3,3'-difluoro-4,4'-dihydroxy-biphenyl at 75°C, add 22.2 kg of dried 3,3'-difluoro-4,4'-dihydroxy-biphenyl and 145 kg of propylene oxide into the reactor, stir at 800 r / min for 30 min, then add 24 g of dimethyl carbonate as a catalyst in an atmosphere of carbon dioxide gas, maintain the pressure at 4 MPa, and stir at 95°C and 1500 r / min for 6.5 h to obtain fluorinated polycarbonate-polyether polyol.

[0042] Step 4: Arrange the optical fiber, aramid reinforcing wire and metal conductor coated with an insulating layer into a bundle, then cover it with a tinned copper mesh shielding layer, extrude thermoplastic TPE on the outside as a protective layer to obtain a photovoltaic composite prefabricated cable.

[0043] Step 5: Add 250kg of fluorinated polycarbonate-polyether polyol, 0.56kg of dibutyltin dilaurate and 0.8kg of foam stabilizer into the reactor, stir at 2000r / min for 3min, then add 126kg of modified MDI at 25°C, stir at 2000r / min for 16s, then add 42kg of fluorinated mercaptoacetamide antibacterial compound and 18kg of 1,4-butanediol, stir at 1000r / min for 3min, apply on the outer crop sheath layer of the photovoltaic composite prefabricated cable, and obtain the photovoltaic composite floating cable after aging at 30°C.

[0044] Comparative Example 1: Based on Example 3, 3,3'-difluoro-4,4'-dihydroxy-biphenyl of equal molar mass was directly used to replace the fluorinated polycarbonate-polyether polyol prepared in step 3, and the other steps remained unchanged to prepare a photovoltaic composite floating cable.

[0045] Comparative Example 2: Based on Example 3, a mercaptoacetamide antibacterial compound of equal molar mass was directly used to replace the fluorine-containing mercaptoacetamide antibacterial compound in step 2, and the other steps remained unchanged to prepare a photovoltaic composite floating cable.

[0046] Comparative Example 3: Based on Example 3, hydroxyethylethylenediamine of equal molar mass was directly used to replace the fluorinated mercaptoacetamide antibacterial compound in step 2, and the other steps remained unchanged to prepare a photovoltaic composite floating cable.

[0047] Comparative Example 4: The sheath layer material is replaced with BASF 1175A polyether TPU, which is extruded and coated on the outside of the optoelectronic composite prefabricated cable, and the other steps remain unchanged to prepare an optoelectronic composite floating cable.

[0048] In the examples and comparative examples, the foam stabilizer was purchased from Aoshijia Material Technology (Shanghai) Co., Ltd., model number UF5880; the modified MDI was modified MDI2412 purchased from Shanghai Yexing Industrial Co., Ltd.

[0049] Performance tests were performed on Examples 1 to 3 and Comparative Examples 1 to 4. The densities of different optoelectronic composite floating cable sheath materials were tested according to GB / T 6343-2009. Samples of the sheath materials were prepared according to GB / T 6344-2008 and the tensile strength and elongation at break were tested. The samples were immersed in water for 1 hour, and the weight gain rate of the samples was calculated (weight gain rate = (mass after immersion - mass before immersion) × 100%). Then, the tensile strength was tested again, and the tensile strength retention rate was calculated (tensile strength retention rate = (tensile strength before immersion - tensile strength after immersion) × 100%), so as to evaluate the water resistance. Different sheath materials were cut into 10 mm × 10 mm samples, and different samples were immersed in a concentration of 10 5 / mL of Chlorella solution for 3 days, then the samples were removed and counted under a fluorescence microscope (cells / mm 2 ), and evaluate its anti-algae adhesion. “\” indicates not tested. The results are shown in Table 1:

[0050] Table 1

[0051] project Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 <![CDATA[Density / g / cm 3 > 0.49g 0.48 0.48 0.45 0.47 0.47 \ Tensile strength / MPa 34.5 34.1 33.9 29.6 31.8 31.5 \ Elongation at break / % 587 594 596 587 612 615 \ Weight gain rate / % 0.13 0.12 0.13 0.47 0.25 0.29 \ Tensile strength retention rate / % 99.9 99.9 99.9 98.2 99.7 99.6 \ <![CDATA[Number of Chlorella cells / cells / mm 2 > 6 3 4 15 37 83 226

[0052] It can be seen from Table 1 that the jacket layer material samples in Examples 1 to 3 have better tensile strength and water resistance, and have an inhibitory effect on the attachment of seaweed.

[0053] It should be noted that, in this article, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for preparing a photoelectric composite floating cable, characterized in that: The steps include: Step 1: Arrange the optical fiber, aramid reinforcing wire and metal conductor coated with an insulating layer into a bundle, then cover it with a tinned copper mesh shielding layer, extrude thermoplastic TPE on the outside as a protective layer, and obtain a photoelectric composite prefabricated cable; Step 2: adding fluorinated polycarbonate-polyether polyol, catalyst and foam stabilizer into a reaction kettle, stirring at 1500-2000 r / min for 2-3 min, then adding modified MDI at 25° C., stirring at 2000 r / min for 8-16 s, then adding fluorinated mercaptoacetamide antibacterial compound and 1,4-butanediol, stirring at 500-1000 r / min for 1-2 min, coating the outer surface of the optoelectronic composite prefabricated cable as a sheath layer, and aging at 20-30° C. to obtain an optoelectronic composite floating cable; The fluorinated mercaptoacetamide antibacterial compound is prepared by the following steps: Anhydrous ethanol and mercaptoacetamide antibacterial compound are added into a reaction kettle and stirred for 15-20 minutes, and then trifluoroethyl methacrylate is added, and the reaction is carried out for 8-9 hours under nitrogen protection and 60° C., and then extracted with chloroform for 3-5 times, and distilled under reduced pressure to obtain a fluorinated mercaptoacetamide antibacterial compound.

2. The method for preparing a photoelectric composite floating cable according to claim 1, characterized in that: The usage ratio of the anhydrous ethanol, the mercaptoacetamide antibacterial compound and trifluoroethyl methacrylate is 150 mL: 97.5 g: 125 g.

3. The method for preparing a photoelectric composite floating cable according to claim 1, characterized in that: The usage ratio of the fluorine-containing polycarbonate-polyether polyol, the catalyst, the foam stabilizer, the modified MDI, the fluorine-containing mercaptoacetamide antibacterial compound and 1,4-butanediol is 250g: 0.54-0.56g: 0.6-0.8g: 126g: 42g: 18g.

4. The method for preparing a photoelectric composite floating cable according to claim 1, characterized in that: The mercaptoacetamide antibacterial compound is prepared by the following steps: Add dimethyl sulfoxide as a solvent into a reaction kettle, then add 1-ethyl-(3-dimethylaminopropyl)carbodiimide and 1-hydroxybenzotriazole, 1-ethyl-(3-dimethylaminopropyl)carbodiimide as an activator, 1-hydroxybenzotriazole as a buffer, add thioglycolic acid at 0°C and under nitrogen protection, stir and activate at 200-500r / min for 20-30min, then add hydroxyethylethylenediamine into the reaction kettle, continue stirring and reacting for 4-5h, remove the solvent by rotary evaporation, wash with deionized water to remove the activator and buffer, and dry to obtain a thioglycolamide antibacterial compound.

5. The method for preparing a photoelectric composite floating cable according to claim 4, characterized in that: The usage ratio of dimethyl sulfoxide, 1-ethyl-(3-dimethylaminopropyl)carbodiimide, 1-hydroxybenzotriazole, thioglycolic acid and hydroxyethylethylenediamine is 40-60 mL: 5 g: 8 g: 1.5 g: 1.7 g.

6. The method for preparing a photoelectric composite floating cable according to claim 1, characterized in that: The catalyst is dibutyltin dilaurate.

7. The method for preparing a photoelectric composite floating cable according to claim 1, characterized in that: Fluorinated polycarbonate-polyether polyol is prepared by the following steps: 3,3'-difluoro-4,4'-dihydroxy-biphenyl is vacuum dried at 70-75°C, the dried 3,3'-difluoro-4,4'-dihydroxy-biphenyl and propylene oxide are added into a reaction kettle, stirred at 500-800r / min for 20-30min, and then dimethyl carbonate is added as a catalyst in an atmosphere of carbon dioxide gas, the pressure is maintained at 4MPa, and stirred at 95°C and 1000-1500r / min for 6-6.5h to obtain a fluorine-containing polycarbonate-polyether polyol.

8. The method for preparing a photoelectric composite floating cable according to claim 7, characterized in that: The usage ratio of the 3,3'-difluoro-4,4'-dihydroxy-biphenyl, propylene oxide and dimethyl carbonate is 22.2g:142-145g:22-24mg.