CN116577886B - Special optical cable based on composite material - Google Patents
Special optical cable based on composite material Download PDFInfo
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- CN116577886B CN116577886B CN202310392067.3A CN202310392067A CN116577886B CN 116577886 B CN116577886 B CN 116577886B CN 202310392067 A CN202310392067 A CN 202310392067A CN 116577886 B CN116577886 B CN 116577886B
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- polypropylene
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- 230000003287 optical effect Effects 0.000 title claims abstract description 42
- 239000002131 composite material Substances 0.000 title claims abstract description 16
- 239000004743 Polypropylene Substances 0.000 claims abstract description 53
- -1 polypropylene Polymers 0.000 claims abstract description 53
- 229920001155 polypropylene Polymers 0.000 claims abstract description 53
- 239000002689 soil Substances 0.000 claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 26
- 239000013307 optical fiber Substances 0.000 claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 14
- 239000010959 steel Substances 0.000 claims abstract description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 12
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 12
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 11
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 11
- 239000006229 carbon black Substances 0.000 claims abstract description 11
- 125000003700 epoxy group Chemical group 0.000 claims abstract description 11
- 239000003381 stabilizer Substances 0.000 claims abstract description 11
- 229920002121 Hydroxyl-terminated polybutadiene Polymers 0.000 claims abstract description 6
- 239000000835 fiber Substances 0.000 claims abstract description 5
- 238000009830 intercalation Methods 0.000 claims abstract description 5
- 230000002687 intercalation Effects 0.000 claims abstract description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 30
- 238000002360 preparation method Methods 0.000 claims description 17
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- 239000003054 catalyst Substances 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- YCLSOMLVSHPPFV-UHFFFAOYSA-N 3-(2-carboxyethyldisulfanyl)propanoic acid Chemical compound OC(=O)CCSSCCC(O)=O YCLSOMLVSHPPFV-UHFFFAOYSA-N 0.000 claims description 9
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical group CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 8
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 7
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000001291 vacuum drying Methods 0.000 claims description 5
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 claims description 4
- 239000003999 initiator Substances 0.000 claims description 4
- JOXIMZWYDAKGHI-UHFFFAOYSA-N p-toluenesulfonic acid Substances CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 230000009257 reactivity Effects 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 239000004342 Benzoyl peroxide Substances 0.000 claims description 2
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims description 2
- 235000019400 benzoyl peroxide Nutrition 0.000 claims description 2
- 238000009835 boiling Methods 0.000 claims description 2
- 238000001704 evaporation Methods 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 125000005489 p-toluenesulfonic acid group Chemical group 0.000 claims description 2
- 239000002904 solvent Substances 0.000 claims description 2
- 230000004048 modification Effects 0.000 abstract description 4
- 238000012986 modification Methods 0.000 abstract description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 239000012086 standard solution Substances 0.000 description 12
- 239000011159 matrix material Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 238000004891 communication Methods 0.000 description 7
- 229920006231 aramid fiber Polymers 0.000 description 5
- AOJFQRQNPXYVLM-UHFFFAOYSA-N pyridin-1-ium;chloride Chemical compound [Cl-].C1=CC=[NH+]C=C1 AOJFQRQNPXYVLM-UHFFFAOYSA-N 0.000 description 5
- 239000005062 Polybutadiene Substances 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 description 4
- 229920002857 polybutadiene Polymers 0.000 description 4
- YLLIGHVCTUPGEH-UHFFFAOYSA-M potassium;ethanol;hydroxide Chemical compound [OH-].[K+].CCO YLLIGHVCTUPGEH-UHFFFAOYSA-M 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000004448 titration Methods 0.000 description 4
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920001690 polydopamine Polymers 0.000 description 2
- 238000007142 ring opening reaction Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000007385 chemical modification Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000011022 opal Substances 0.000 description 1
- 239000001814 pectin Substances 0.000 description 1
- 235000010987 pectin Nutrition 0.000 description 1
- 229920001277 pectin Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- OVYTZAASVAZITK-UHFFFAOYSA-M sodium;ethanol;hydroxide Chemical compound [OH-].[Na+].CCO OVYTZAASVAZITK-UHFFFAOYSA-M 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
- G02B6/4432—Protective covering with fibre reinforcements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4479—Manufacturing methods of optical cables
- G02B6/4486—Protective covering
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
Abstract
The invention discloses a special optical cable based on a composite material, which comprises an optical fiber group, a reinforcing piece, cable paste, an insulated copper wire, an opening rope, a embossed steel belt and an outer sheath; the optical fiber group comprises optical fibers, fiber paste and loose tubes from inside to outside; the reinforcing piece, the insulated copper wire and the opening cable are tangential to the optical fiber group in pairs or are placed with a slight gap; the outer layers of the optical fiber group, the reinforcing piece, the insulated copper wire and the opening rope are coated with embossed steel belts; the outer sheath is coated on the surface of the embossed steel belt; the outer sheath material comprises self-repairing polypropylene, organic nano soil, an antioxidant, an anti-UV carbon black, an accelerator and a stabilizer; the self-repairing polypropylene is prepared by introducing epoxy groups into polypropylene, grafting disulfide bonds with self-repairing function, and preparing organic nano soil by intercalation modification of organic nano soil and access of hydroxyl-terminated polybutadiene, so that the mechanical strength of the optical cable is improved.
Description
Technical Field
The invention relates to the technical field of optical cables, in particular to a special optical cable based on a composite material.
Background
Today, network construction is well-developed, the construction of information highways is large, the development of optical fiber home entry is small, modern information technology has been hard to be separated from optical communication technology, optical communication is used as a main communication network, no matter the information such as internet or mobile communication needs to be collected through a base station and then is transmitted to an optical communication system in a long distance, along with the explosive growth of future data communication, the pressure of the existing basic network is increasingly large, network carrier mobile phones, computers, flat plates and the like are popularized, the requirements on the communication technology are increasingly high, in order to meet the demands of people on the network, the pleasure brought by surfing the Internet is enjoyed, network base stations with a plurality of sizes have to be established, along with the development of 5G service, the requirements on optical cables carrying network transmission signal tasks are also increasingly high, and due to the fact that the use of the optical cables are widely classified into urban telephone, long distance optical cables, submarine optical cables and user optical cables, and the characteristics of the required optical cables are different according to different use environments.
At present, the optical cable mainly comprises optical fibers and a pipe sleeve for protecting the optical fibers in the structure, and the communication optical cable has higher requirements on performance due to the wide application range and long distance and overhead suspension. The chinese patent with publication No. CN109505131a discloses a self-repairing aramid fiber reinforced core for optical cable, which is prepared by preparing a polydopamine layer comprising an aramid fiber matrix, an aramid fiber matrix surface, and a polyurethane layer coated on the polydopamine layer surface, so as to enhance the self-repairing performance of the aramid fiber reinforced core, but the aramid fiber reinforced core is not directly arranged on the outer sheath layer, when being impacted, the outer sheath layer is easier to crack first, and once the outer sheath layer is used as the first protection wire of the whole optical cable, the inner member of the optical cable is directly exposed to air and extreme weather and is easier to damage once being damaged, thereby reducing the service life of the whole optical cable.
Based on the structure, the invention provides the special optical cable with high strength and self-repairing function.
Disclosure of Invention
The invention aims to provide a special optical cable based on a composite material, which solves the following problems by preparing an outer sheath with a self-repairing function and high strength: (1) the problem of easy breakage of the cable in extreme weather; and (2) the maintenance of the high-altitude suspension type optical cable is difficult.
The aim of the invention can be achieved by the following technical scheme:
a special optical cable based on composite materials comprises an optical fiber group, a reinforcing piece, cable paste, an insulated copper wire, an opening cable, a knurled steel belt and an outer sheath; the optical fiber group comprises optical fibers, fiber paste and loose tubes from inside to outside; the reinforcing piece, the insulated copper wire and the opening cable are tangential to the optical fiber group in pairs or are placed with a slight gap; the outer layers of the optical fiber group, the reinforcing piece, the insulated copper wire and the open cable are coated with embossed steel belts; the outer sheath is coated on the surface of the embossed steel belt; the outer sheath is prepared by extruding the raw material of the outer sheath on the surface of an embossed steel belt through an extruder; the outer sheath comprises the following raw materials in parts by weight: 80-160 parts of self-repairing polypropylene, 3-7 parts of organic nano soil, 2-8 parts of antioxidant, 1-3 parts of UV-resistant carbon black, 1-5 parts of accelerator and 3-6 parts of stabilizer; the self-repairing polypropylene is prepared by introducing epoxy groups into polypropylene and then grafting disulfide bonds with self-repairing function; the organic nano soil is prepared by modifying the intercalation of the organic nano soil by maleic anhydride and then accessing hydroxyl-terminated polybutadiene.
Further, the specific preparation method of the self-repairing polypropylene comprises the following steps:
(1) Adding 0.5-1g of initiator and 5-10ml of glycidyl methacrylate into a high-speed mixer, and uniformly mixing to obtain a mixture;
(2) Putting 8-15g of polypropylene into a double-screw extruder, adding 5.5-10.5 and m l of the mixture in the step (1) in a molten state, extruding and granulating to obtain a polypropylene intermediate with reactivity;
(3) Dissolving 5-15g of polypropylene intermediate in 50-70m l toluene solvent, adding 1-2m l catalyst and 5-8g of 3,3' -dithiodipropionic acid, introducing nitrogen, heating to 90-110 ℃ for reaction for 6-10h, filtering the product, rotary evaporating, removing low-boiling substances, and vacuum drying at 30-50 ℃ to obtain the self-repairing polypropylene.
According to the technical scheme, under the initiation of dicumyl peroxide, glycidyl methacrylate and polypropylene are subjected to melt polymerization, and epoxy groups are added into a polypropylene molecular chain through chemical modification to obtain epoxy polypropylene; and then carrying out ring-opening reaction on the carboxyl-terminated 3,3' -dithiodipropionic acid and the epoxy polypropylene under the action of a catalyst, so as to introduce disulfide bonds into the epoxy polypropylene and obtain the self-repairing polypropylene.
Further, in the step (1), the initiator is any one of benzoyl peroxide and dicumyl peroxide.
Further, in the step (3), the catalyst is triethylamine.
Further, the preparation method of the organic nano soil comprises the following steps:
s1: 6-8g of styrene, 1-3g of maleic anhydride, 2-4g of diatomite, 0.1-0.5g of dicumyl peroxide and 0.5-5ml of acetone are uniformly shaken in a flask, heated for reaction, filtered, washed and dried in vacuum for 6-10 hours to obtain modified diatomite;
s2, adding 15-20g of modified diatomite into 300-500ml of ethanol solvent, stirring for 3-6h at normal temperature, introducing nitrogen to deoxidize, adding 20-30g of hydroxyl-terminated polybutadiene and 0.3-0.5-m l catalyst, continuously stirring for 8-15h, separating ethanol, washing for 4-8 times, and vacuum drying to obtain the organic nano soil.
Through a mechanochemical synthesis method, introducing maleic anhydride and diatomite to carry out intercalation modification under the action of dicumyl peroxide, and connecting the maleic anhydride to the diatomite to obtain maleated diatomite; under the action of a catalyst, ring-opening esterification reaction is carried out on maleic anhydride groups in the maleated diatomite and hydroxyl groups in hydroxyl-terminated polybutadiene, and polybutadiene is introduced into the maleated diatomite to obtain the organic nano soil.
Further, in the step S1, the temperature is 80-100 ℃ and the time is 5-8h.
Further, in step S2, the catalyst is p-toluenesulfonic acid.
Further, the preparation method of the outer sheath material comprises the following steps:
the method comprises the steps of A, pouring self-repairing polypropylene, organic nano soil, an antioxidant, UV-resistant carbon black, an accelerator and a stabilizer in parts by weight into a high-speed mixer, setting the rotating speed of a screw to be 1500-3000r/min, and mixing at high speed for 1-2h to obtain a premix;
b, transferring the premix into a double-screw extruder, setting the temperature of a machine head to be 100-300 ℃, and extruding and granulating at the screw speed of 300-500r/min to obtain the outer sheath material.
The invention has the beneficial effects that:
(1) The self-repairing polypropylene is used as the matrix material of the optical cable outer sheath layer, and the structure of the self-repairing polypropylene contains disulfide bonds with lower bond energy, so that the self-repairing polypropylene has better dynamic exchange property, has the condition advantage of reversible exchange under mild conditions, and enables the polymer main chain and disulfide bonds on other chains to exchange reaction after the optical cable outer sheath is scratched, so that the polymer chains near the notch are reconnected, the self-repairing material with the disulfide bonds can realize the self-repairing process through the breakage and recombination of the disulfide bonds in the polymer, and the self-repairing can be timely carried out to avoid crack expansion when the optical cable outer sheath is damaged by introducing the disulfide bonds into the optical cable outer sheath, thereby saving labor, time and money cost and prolonging the service life of the optical cable.
(2) The organic nano-soil is prepared by modifying diatomite, the diatomite is siliceous biological sedimentary rock taking opal as a main mineral component, and is mainly formed by remains of diatomite and deposition of cell walls, the diatomite contains pectin and silicon dioxide, has a certain mechanical strength, can improve the mechanical property of an optical cable, and has flexibility due to the combination of the diatomite and polybutadiene through intercalation modification of maleic anhydride, and the molecular chains of the polybutadiene are arranged in a zigzag shape, so that the compatibility of the diatomite and a base material can be improved, and the diatomite and the polybutadiene produce a synergistic effect in the optical cable structure, so that the tensile strength and toughness of the optical cable can be improved, and the mechanical property of the optical cable can be further improved.
Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a special optical cable based on a composite material according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the invention relates to a special optical cable based on a composite material, which sequentially comprises an optical fiber group, a reinforcing piece, cable paste, an insulated copper wire, an open cable, a embossed steel belt and a modified outer sheath, wherein the optical fiber group comprises optical fibers, fiber paste and loose tubes from inside to outside, the reinforcing piece, the insulated copper wire, the open cable and the optical fiber group are arranged in a tangential mode or in a slightly clearance mode, the outer layers of the optical fiber group, the reinforcing piece, the insulated copper wire and the open cable are coated with the embossed steel belt, and the modified outer sheath is coated on the surface of the embossed steel belt.
Example 1
1. Preparation of self-repairing polypropylene
(1) Dicumyl peroxide 0.5g and glycidyl methacrylate 5ml are added into a high-speed mixer and mixed uniformly to obtain a mixture.
(2) 8g of polypropylene was placed in a twin-screw extruder, and the mixture obtained in the step (1) was extruded and pelletized by adding 5.5. 5.5m l in a molten state to obtain a polypropylene intermediate having reactivity. The epoxy group content in the polypropylene intermediate is determined by a pyridine hydrochloride method for characterization, 2g of the polypropylene intermediate is weighed, 30ml of hydrochloric acid-pyridine solution is added, heating reflux is carried out for 0.5h, cooling is carried out to room temperature, 15ml of neutral acetone is added for washing, 3 drops of phenolphthalein indicator are dripped, 0.2 mol of sodium hydroxide ethanol standard solution is used for titration, the solution is subjected to discoloration stopping reaction, and a blank test is carried out. The content of epoxy groups in the polypropylene intermediate was calculated according to the following formula:
wherein V is blankThe experiment consumes milliliters of sodium hydroxide standard solution, and the milliliters of the sodium hydroxide standard solution are ml; v (V) 0 Ml of sodium hydroxide standard solution consumed by the sample; c is the concentration of a sodium hydroxide standard solution, mo L/L; m is the weight of the sample, g; the epoxy group content of the polypropylene intermediate was calculated to be 12.4%.
(3) 5g of polypropylene intermediate is dissolved in 50ml of toluene solvent, 1ml of triethylamine and 5g of 3,3' -dithiodipropionic acid are added, nitrogen is introduced, the temperature is raised to 90 ℃ for reaction for 6 hours, the product is filtered and then rotary evaporated, low-boiling-point substances are removed, and the self-repairing polypropylene is obtained by vacuum drying at 30 ℃. The epoxy group content of the epoxy group in the self-repairing polypropylene is measured by a pyridine hydrochloride method, the specific method steps are the same as those of (2), the calculated epoxy group content in the self-repairing polypropylene sample is 8.15%, and the reduction is caused in part by the reaction of the epoxy group in the polypropylene intermediate structure and the carboxyl group in the 3,3' -dithiodipropionic acid structure.
2. Preparation of organic nano soil
S1: 6g of styrene, 1g of maleic anhydride, 2g of diatomite, 0.1g of dicumyl peroxide and 0.5ml of acetone are uniformly shaken in a flask, heated to 80 ℃ for reaction for 5h, filtered, washed and dried in vacuum for 6h to obtain the modified diatomite. Measuring the content of maleic anhydride in the modified diatomite by a titration method for characterization, weighing 2g of modified diatomite, adding 100ml of dimethylbenzene, heating and refluxing for 0.5h for full mixing, cooling, adding an excessive 0.1 mol/L KOH-ethanol standard solution, heating and refluxing for 8h, cooling, adding 2 drops of phenolphthalein indicator, reversely dropping the excessive KOH-ethanol standard solution by using the 0.1 mol/L HC L-isopropanol standard solution, recording the excessive consumed alkali amount and the neutralized acid amount, and calculating the content of maleic anhydride in the modified diatomite according to the following formula;
wherein: m is 1g of maleic anhydride on modified diatomite in percentage by mass; c (C) 1 Is KOH-ethanol standard solution, mo L; c (C) 2 Is HC L-isopropanol standard solution, mo L/L; v (V) 1 M l to add excess KOH-ethanol standard solution volume; v (V) 2 Volume of HC l-isopropanol standard solution consumed for back-titration of the neutralizing base, m l; m is the mass of the modified diatomite sample and g; the maleic anhydride content of the resulting sample was calculated to be 9.37%.
And S2, adding 15g of modified diatomite into 300m l ethanol solution, stirring for 3 hours at normal temperature, introducing nitrogen to deoxidize, adding 20g of hydroxyl-terminated butadiene and 0.3ml of p-toluenesulfonic acid, continuously stirring for 8 hours, separating ethanol, washing for 4 times, and drying in vacuum to obtain the organic nano soil. The content of maleic anhydride in the organic nano soil is determined by a titration method, the specific method steps are the same as S1, and the content of maleic anhydride in the organic nano soil sample is calculated to be 3.86% because the maleic anhydride group in the modified diatomite structure reacts with the hydroxyl-terminated group in the hydroxyl-terminated butadiene structure.
3. Preparation of the outer sheath Material
The method comprises the following steps of A, pouring 80 parts of self-repairing polypropylene, 3 parts of organic nano soil, 2 parts of antioxidant, 1 part of UV-resistant carbon black, 1 part of accelerator and 3 parts of stabilizer into a high-speed mixer, setting the rotating speed of a screw to 1500 r/min, and mixing for 1h at a high speed to obtain a premix;
transferring the premix into a double-screw extruder, setting the temperature of a machine head to be 100 ℃, setting the rotating speed of a screw to be 300 r/min, extruding, granulating, and drawing and molding to obtain the outer sheath matrix material.
Example 2
Preparation of the outer sheath Material
130 parts of self-repairing polypropylene, 5 parts of organic nano soil, 5 parts of antioxidant, 2 parts of UV-resistant carbon black, 3 parts of accelerator and 4 parts of stabilizer are poured into a high-speed mixer, the rotating speed of a screw is set to 2500 r/min, and the mixture is mixed for 1.5 hours at a high speed to obtain a premix;
transferring the premix into a double-screw extruder, setting the temperature of a machine head to be 200 ℃, and extruding and granulating at the screw speed of 400 r/min to obtain the outer sheath matrix material.
The preparation method of the self-repairing polypropylene and the organic nano soil is the same as that of the example 1.
Example 3
Preparation of the outer sheath Material
160 parts of self-repairing polypropylene, 7 parts of organic nano soil, 8 parts of antioxidant, 3 parts of UV-resistant carbon black, 5 parts of accelerator and 6 parts of stabilizer are poured into a high-speed mixer, the rotating speed of a screw is set to 3000r/min, and the mixture is mixed for 2 hours at a high speed to obtain premix;
transferring the premix into a double-screw extruder, setting the temperature of a machine head to 300 ℃, and extruding and granulating at the screw speed of 500r/min to obtain the outer sheath matrix material.
The preparation method of the self-repairing polypropylene and the organic nano soil is the same as that of the example 1.
Comparative example 1
Preparation of the outer sheath Material
The method comprises the following steps of A, pouring 80 parts of self-repairing polypropylene, 3 parts of common nano soil, 2 parts of antioxidant, 1 part of UV-resistant carbon black, 1 part of accelerator and 3 parts of stabilizer into a high-speed mixer, setting the rotating speed of a screw to 1500 r/min, and mixing for 1h at a high speed to obtain a premix;
transferring the premix into a double-screw extruder, setting the temperature of a machine head to be 100 ℃, and extruding and granulating at the screw speed of 300 r/min to obtain the outer sheath matrix material.
Wherein the self-repairing polypropylene is prepared in the same manner as in example 1.
Comparative example 2
Preparation of the outer sheath Material
130 parts of polypropylene, 5 parts of organic nano soil, 5 parts of antioxidant, 2 parts of UV-resistant carbon black, 3 parts of accelerator and 4 parts of stabilizer are poured into a high-speed mixer, the rotating speed of a screw is set to 2500 r/min, and the mixture is mixed for 1.5 hours at a high speed to obtain a premix;
transferring the premix into a double-screw extruder, setting the temperature of a machine head to be 200 ℃, and extruding and granulating at the screw speed of 400 r/min to obtain the outer sheath matrix material.
Wherein the preparation method of the organic nano soil is the same as in example 1.
Comparative example 3
Preparation of the outer sheath Material
160 parts of polypropylene, 7 parts of common nano soil, 8 parts of antioxidant, 3 parts of UV-resistant carbon black, 5 parts of accelerator and 6 parts of stabilizer are poured into a high-speed mixer, the rotating speed of a screw is set to 3000r/min, and the mixture is mixed for 2 hours at a high speed to obtain premix;
transferring the premix into a double-screw extruder, setting the temperature of a machine head to 300 ℃, and extruding and granulating at the screw speed of 500r/min to obtain the outer sheath matrix material.
Performance detection
The outer sheath materials prepared in examples 1 to 3, comparative examples 1 to 3 were sampled, and reference was made to the national standard GB/T1040.2-2022 determination of Plastic tensile Properties part 2: test conditions for molding and extrusion of plastics the samples were tested for tensile strength and flexural strength using a DSS25T electronic universal material tester; drawing a crack with the length of 5cm and the width of about 500 mu m on the surface of a sample by using a blade, repairing the crack for 24 hours at 150 ℃, testing the tensile strength of the outer sheath material again, and calculating the repairing rate of the sample by using a formula (the repaired tensile strength/the initial tensile strength) multiplied by 100%; GB/T13525-1992 test method for tensile impact Properties of plastics impact properties the samples were tested for impact properties, the test results are given in the following table:
as can be seen from the above table data, the outer sheath materials prepared in examples 1 to 3 have obvious effects on tensile strength, bending strength and impact resistance, and the comparative examples 1 and 3 use common nano-soil materials, and the strength of the materials is not changed, so that the tensile strength, bending strength and impact resistance are obviously reduced, and the prepared outer sheath materials are not high in strength compared with the examples; the addition of the organic nano soil in comparative example 2 obviously improves the tensile strength, bending strength and impact resistance of the outer sheath material, has little difference from the outer sheath material prepared in the examples, and has high-strength characteristics. The repairing performance of the example 1-the example 3 is strong, the self-repairing polypropylene is used in the comparative example 1, so that the repairing performance is not quite different from that of the example, the tensile strength of the comparative example 2 is obviously reduced, the strength of the outer sheath material is weakened, and the repairing performance is hardly generated due to the common polypropylene material.
The foregoing is merely illustrative and explanatory of the principles of the invention, as various modifications and additions may be made to the specific embodiments described, or similar thereto, by those skilled in the art, without departing from the principles of the invention or beyond the scope of the appended claims.
Claims (8)
1. The special optical cable based on the composite material is characterized by comprising an optical fiber group, a reinforcing piece, cable paste, an insulated copper wire, an opening rope, a embossed steel belt and an outer sheath; the optical fiber group comprises optical fibers, fiber paste and loose tubes from inside to outside; the reinforcing piece, the insulated copper wire and the opening cable are tangential to the optical fiber group in pairs or are placed with a slight gap; the outer layers of the optical fiber group, the reinforcing piece, the insulated copper wire and the open cable are coated with embossed steel belts; the outer sheath is coated on the surface of the embossed steel belt; the outer sheath is made by extruding an outer sheath material on the surface of an embossed steel belt through an extruder; the outer sheath material comprises the following raw materials in parts by weight: 80-160 parts of self-repairing polypropylene, 3-7 parts of organic nano soil, 2-8 parts of antioxidant, 1-3 parts of UV-resistant carbon black, 1-5 parts of accelerator and 3-6 parts of stabilizer; the self-repairing polypropylene is prepared by introducing epoxy groups into polypropylene and then grafting disulfide bonds with self-repairing function; the organic nano soil is prepared by modifying diatomite by intercalation of maleic anhydride and then accessing hydroxyl-terminated polybutadiene.
2. The special optical cable based on the composite material according to claim 1, wherein the specific preparation method of the self-repairing polypropylene is as follows:
(1) Adding 0.5-1g of initiator and 5-10ml of glycidyl methacrylate into a high-speed mixer, and uniformly mixing to obtain a mixture;
(2) Putting 8-15g of polypropylene into a double screw extruder, adding 5.5-10.5ml of the mixture in the step (1) in a molten state, extruding and granulating to obtain a polypropylene intermediate with reactivity;
(3) Dissolving 5-15g of polypropylene intermediate in 50-70ml of toluene solvent, adding 1-2ml of catalyst and 5-8g of 3,3' -dithiodipropionic acid, introducing nitrogen, heating to 90-110 ℃ for reaction for 6-10h, filtering the product, rotationally evaporating, removing low-boiling substances, and vacuum drying at 30-50 ℃ to obtain the self-repairing polypropylene.
3. The special optical cable based on composite material according to claim 2, wherein in the step (1), the initiator is any one of benzoyl peroxide and dicumyl peroxide.
4. A special fiber optic cable based on composite materials according to claim 2, wherein in step (3), the catalyst is triethylamine.
5. The special optical cable based on the composite material according to claim 1, wherein the preparation method of the organic nano soil comprises the following steps:
s1: 6-8g of styrene, 1-3g of maleic anhydride, 2-4g of diatomite, 0.1-0.5g of dicumyl peroxide and 0.5-5ml of acetone are uniformly shaken in a flask, heated for reaction, filtered, washed and dried in vacuum for 6-10 hours to obtain modified diatomite;
s2, adding 15-20g of modified diatomite into 300-500ml of ethanol solvent, stirring for 3-6h at normal temperature, introducing nitrogen to deoxidize, adding 20-30g of hydroxyl-terminated polybutadiene and 0.3-0.5ml of catalyst, continuously stirring for 8-15h, separating ethanol, washing for 4-8 times, and vacuum drying to obtain the organic nano soil.
6. The special optical cable based on the composite material according to claim 5, wherein in the step S1, the temperature of the heating reaction is 80-100 ℃ for 5-8 hours.
7. The composite-based specialty cable of claim 5, wherein in step S2, said catalyst is p-toluene sulfonic acid.
8. The special optical cable based on the composite material according to claim 1, wherein the preparation method of the outer sheath material is as follows:
the method comprises the steps of A, pouring self-repairing polypropylene, organic nano soil, an antioxidant, UV-resistant carbon black, an accelerator and a stabilizer in parts by weight into a high-speed mixer, setting the rotating speed of a screw to be 1500-3000r/min, and mixing at high speed for 1-2h to obtain a premix;
transferring the premix into a double-screw extruder, setting the temperature of a machine head to be 100-300 ℃, and extruding and granulating at the screw speed of 300-500r/min to obtain the outer sheath material.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0940819A1 (en) * | 1998-03-04 | 1999-09-08 | PIRELLI CAVI E SISTEMI S.p.A. | Electrical cable with self-repairing protection |
| WO2016132127A2 (en) * | 2015-02-18 | 2016-08-25 | Gnosys Global Limited | Self-repairing cable |
| CN107099098A (en) * | 2017-05-05 | 2017-08-29 | 安徽得尚电子科技有限公司 | A kind of fire-resistant rubber composition |
| CN114582562A (en) * | 2022-04-12 | 2022-06-03 | 叶佳 | Light microwave cable and preparation method thereof |
| CN115128749A (en) * | 2022-06-17 | 2022-09-30 | 上海电信工程有限公司 | Waterproof optical cable with self-repairing layer |
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|---|---|---|---|---|
| EP0940819A1 (en) * | 1998-03-04 | 1999-09-08 | PIRELLI CAVI E SISTEMI S.p.A. | Electrical cable with self-repairing protection |
| WO2016132127A2 (en) * | 2015-02-18 | 2016-08-25 | Gnosys Global Limited | Self-repairing cable |
| CN107099098A (en) * | 2017-05-05 | 2017-08-29 | 安徽得尚电子科技有限公司 | A kind of fire-resistant rubber composition |
| CN114582562A (en) * | 2022-04-12 | 2022-06-03 | 叶佳 | Light microwave cable and preparation method thereof |
| CN115128749A (en) * | 2022-06-17 | 2022-09-30 | 上海电信工程有限公司 | Waterproof optical cable with self-repairing layer |
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