CN109491021B - Preparation method of optical fiber jumper - Google Patents

Abstract

The invention discloses an optical fiber jumper wire which comprises an optical fiber body, wherein joint components are arranged at two ends of the optical fiber body, and each joint component comprises an optical fiber inserting core, a connecting cap, a first screw cap, a second screw cap and a third screw cap. The invention also discloses a preparation method of the optical fiber patch cord. The optical fiber jumper prepared by the invention has good sealing performance and tensile property at the joint of the cable body and the joint component, so that the durability of the optical fiber jumper is obviously improved, the optical fiber jumper is not easy to damage by water inflow and break, and the service life is obviously prolonged.

Description

Preparation method of optical fiber jumper

Technical Field

The invention belongs to the technical field of optical fiber cables, and particularly relates to a preparation method of an optical fiber jumper.

Background

In optical fiber transmission, an optical fiber jumper belongs to a passive device and is one of basic devices forming the bottommost layer of an optical fiber communication architecture, namely a data link layer. Optical fiber patch cords typically include a single optical fiber line and splice assemblies attached to both ends of the optical fiber line. The original optical fiber patch cord was used purely for optical transmission. With the progress of science and technology, the communication industry has been greatly developed, and the application of optical fiber patch cords is more and more extensive, and the optical fiber patch cords are mainly used for patch cords from equipment to optical fiber wiring links.

The junction of the cable body of the optical fiber jumper and the joint component is a weak part of the optical fiber jumper, the sealing performance is poor, water is easy to enter, the tensile resistance is weak, the junction is easy to break or damage, the optical fiber jumper fails, and the problem that how to strengthen the waterproof tensile resistance of the junction is solved.

Disclosure of Invention

In order to solve the technical problems, the invention provides an optical fiber jumper wire, which comprises an optical fiber body, wherein joint components are arranged at two ends of the optical fiber body, each joint component comprises an optical fiber inserting core, a connecting cap, a first screw cap, a second screw cap and a third screw cap, the connecting cap is of a tubular structure, the optical fiber inserting core is arranged in the connecting cap, the front end of the connecting cap is provided with a socket, the outer wall of the tail end of the connecting cap is provided with an external thread, the inner wall of the tail end of the connecting cap is provided with an internal thread, the outer contour of the front end of the first screw cap is of a hexagonal structure, the outer contour of the rear end of the first screw cap is of a cylindrical structure, the front end of the first screw cap is provided with an internal thread, the rear end of the first screw cap is provided with an external thread, the hexagonal structure is arranged on the, the sealing ring is extruded by the hexagonal structure and the connecting cap to form a sealing structure; the optical fiber protection device comprises a first nut, an optical fiber insertion core, a connecting cap, a protection sleeve, a clamping ring, a protrusion part and a second nut, wherein the protection sleeve is arranged on the inner side of the first nut, the rear end of the optical fiber insertion core protrudes out of the connecting cap and extends into the protection sleeve, the front end of the protection sleeve is fixedly connected with the inner wall of the tail end of the connecting cap through threads, the inner wall of the protection sleeve is provided with the clamping ring, the tail end of an optical fiber body is provided with the protrusion part, the protrusion part extends into the protection sleeve and is; the inner wall of the front end of the second nut is processed with an internal thread, the front end of the second nut is in external thread connection with the rear end of the first nut, the diameter of an inner cavity of the second nut is reduced at the rear end to form a sealing step, a sealing ring placing groove is processed on the rear end face of the first nut, a first sealing assembly is arranged in the sealing ring placing groove and comprises a front sealing ring, a rear sealing ring and a sealing backing ring, the rear sealing ring is placed in the sealing ring placing groove, a convex part is arranged at the front end of the rear sealing ring, the front sealing ring is of a sheet ring structure, the inner surface of the rear side of the front sealing ring is in contact with the convex part, the outer surface of the front sealing ring is in contact with the sealing step, the sealing backing ring is positioned at the inner side of the front sealing ring and is fixed on the outer surface of the protective sleeve, and the rear end of the protective sleeve penetrates through, the rear end of the protective sleeve is provided with an external thread, the third screw cap is connected and arranged at the rear end of the protective sleeve through a thread, a second sealing component is arranged between the third screw cap and the protective sleeve, the second seal assembly includes a second front seal ring, a second rear seal ring, and a second gasket ring, the front end of the second rear sealing ring is processed into a step opening which is clamped at the rear end part of the protective sleeve, the rear end of the second rear sealing ring forms a sealing and pressing part, the second front sealing ring is of a sheet ring-shaped structure, the rear side of the second front sealing ring is attached to the inner wall of the third screw cap, the outer surface of the front side of the second front sealing ring is tightly contacted with the sealing and pressing part, the second sealing gasket ring is positioned on the inner side of the second front sealing ring and fixed on the outer surface of the optical fiber body, and the rear side of the optical fiber body penetrates out of the third nut.

Further, the front end of connecting the cap is equipped with the dust proof room, the front end of dust proof room does the socket, the rear end processing of dust proof room has the opening intercommunication the optic fibre lock pin, installs dustproof foam-rubber cushion in the dust proof room, dustproof foam-rubber cushion is full of the dust proof room is fixed in the dust proof room, and both sides have all processed the toper face around dustproof foam-rubber cushion, and the toper face of both sides is linked together through the grafting passageway.

Further, the optical fiber jumper wire further comprises a pairing buckle, the pairing buckle comprises an upper clamping cover and a lower clamping cover, one side of the upper clamping cover and one side of the lower clamping cover are connected through a connector, a clamping component is arranged on the other side opposite to the connector, two clamping grooves are formed in one side, opposite to the upper clamping cover and the lower clamping cover, of the upper clamping cover, the two clamping grooves of the upper clamping cover are in one-to-one correspondence with the two clamping grooves of the lower clamping cover, the clamping component comprises a clamping hook and a clamping opening, and the clamping hook can be clamped into the clamping opening to fixedly connect the upper clamping cover and the lower clamping cover with one side, opposite to the connector.

Furthermore, an anti-skid rubber pad is bonded in the buckle groove.

Furthermore, a square patch is fixedly arranged on the top surface of the upper clamping cover and/or the bottom surface of the lower clamping cover, a gap is reserved between the square patch and the top surface of the upper clamping cover and/or the bottom surface of the lower clamping cover to serve as a mark card placing groove, three sides of the square patch are sealed, the other side is opened to form a notch, and a mark card can be placed in the mark card placing groove.

A preparation method of an optical fiber jumper comprises the following assembly steps:

(1) placing a sealing ring into a sealing groove at the rear end of the connecting cap, and then matching a first screw cap on the connecting cap through threads and pressing the sealing ring;

(2) sleeving a protective sleeve on an optical fiber body with an optical fiber ferrule, inserting the optical fiber ferrule into a connecting cap, and screwing the protective sleeve into an internal thread on the inner wall of the tail end of the connecting cap to tightly press the optical fiber ferrule;

(3) placing a rear sealing ring in the sealing ring placing groove, placing a front sealing ring above the rear sealing ring, screwing a second screw cap into the first screw cap, wherein when the second screw cap is gradually screwed, a sealing step of the second screw cap and a convex part of the rear sealing ring simultaneously extrude the front sealing ring so that the front sealing ring is rotationally deformed, the front end of the front sealing ring is downwards deformed and gradually presses the sealing backing ring to form a sealing surface, and the sealing step and the front sealing ring, and the convex part of the rear sealing ring and the sealing ring can also form a good hard sealing surface;

(4) the rear end of the protective sleeve is clamped with the second rear sealing ring, the second front sealing ring is placed above the second rear sealing ring, then the third screw cap is screwed into the protective sleeve, when the third screw cap is gradually screwed, the third screw cap extrudes the second front sealing ring forwards, the front end of the second front sealing ring is rotated inwards to deform due to the extrusion effect of the second rear sealing ring, the second sealing cushion ring is gradually compressed to form a sealing surface, and meanwhile, the inner wall of the third screw cap, the second front sealing ring, the sealing compression part of the second rear sealing ring, the second front sealing ring and the protective sleeve can also form a good hard sealing surface due to the action of the extrusion force.

Further, the preparation method of the optical fiber ferrule comprises the following steps:

1) mixing the titanium dioxide, the aluminum oxide, the cerium dioxide, the magnesium oxide and the zirconium oxide which are subjected to surface treatment, pre-burning the mixture for 2-4 hours at 700-750 ℃ in an inert gas environment, adding stearic acid accounting for 5-7% of the mixture after pre-burning, ball-milling, and screening through a screen with the mesh number of 1000-1500 to obtain a powder raw material;

2) adding graphite powder, polyethylene glycol and B into the powder raw material₂O₃Fully mixing paraffin, polymethyl methacrylate and hexamethyldisilane, placing the mixture into a sealed container after mixing, filling inert gas into the sealed container to expel air and keeping the pressure in the container at 3-5 standard atmospheric pressures, sealing the sealed container, heating the mixture to 150-160 ℃, magnetically stirring for 2-3 hours, cooling to room temperature after stirring, and taking out the mixed product;

3) adding dioctyl phthalate into the mixed product, performing press molding to obtain a blank, and sintering to obtain the optical fiber ferrule;

the surface treatment method of the titanium dioxide comprises the following steps:

a. preparing an oxalic acid solution with solute mass percent of 5-10%, soaking titanium dioxide powder in the oxalic acid solution for 5-8 min, filtering and separating the titanium dioxide powder, and washing with deionized water;

b. preparing an aqueous solution of chloroiridic acid and niobium oxalate, wherein the mass percentage of chloroiridic acid in the solution is 5-10%, and the mass percentage of niobium oxalate in the solution is 2-5%, soaking the titanium dioxide powder treated in the step a in an acetone solution for degreasing, then washing with deionized water, drying, soaking the dried powder in the aqueous solution of chloroiridic acid and niobium oxalate for more than 20min, filtering the powder after soaking, drying at the temperature of 100-120 ℃, and then transferring to the temperature of 400-450 ℃ for calcining for 1-2 h to obtain a solid phase A;

c. preparing an aqueous solution of nickel chloride, wherein the mass percentage of the nickel chloride in the aqueous solution is 8-10%, soaking the solid phase A in the aqueous solution of nickel chloride, keeping the temperature of the aqueous solution in a water bath at 50-60 ℃ for more than 30min, taking out and drying the solid phase A, immediately soaking the solid phase A in an aqueous solution of potassium borohydride for more than 10min, after soaking, performing solid-liquid separation to obtain a solid phase B, wherein the concentration of the potassium borohydride in the aqueous solution of potassium borohydride is 3-5 g/L, and adjusting the pH of the aqueous solution of potassium borohydride to 13-14 by using sodium hydroxide;

d. washing the solid phase B with deionized water to remove potassium borohydride, then soaking the solid phase B in a reaction solution, heating the solid phase B in a water bath to 75-80 ℃, fully stirring, adding sodium hypophosphite into the reaction solution in the stirring process, continuously stirring and preserving heat for 2-4 hours, wherein the reaction solution is an aqueous solution of nickel sulfate, dimethyl carbonate, acetic acid, thiourea and polyethylene glycol, and the concentrations of all components in the reaction solution are respectively as follows: 15-20 g/L of nickel sulfate, 3-5 g/L of dimethyl carbonate, 3-5 g/L of acetic acid, 6-8 mg/L of thiourea and 1-2 g/L of polyethylene glycol, and the balance of water, wherein the PH of the reaction solution is adjusted to 4.5-5 by using dilute sulfuric acid; the adding amount of the sodium hypophosphite is 20-25 g/1L of reaction solution;

e. and (3) after the heat preservation is finished, carrying out solid-liquid separation to obtain a solid phase C, washing the solid phase C with deionized water, and drying to obtain the titanium dioxide after the surface treatment.

Further, the zirconia is soaked in silica sol in advance, and after soaking, the zirconia is taken out and dried, wherein the mass percentage of the silicon dioxide in the silica sol is 30% -31%.

Further, in the step 1), the mass ratio of titanium dioxide, aluminum oxide, cerium oxide, magnesium oxide and zirconium oxide is as follows:

titanium dioxide: alumina: cerium oxide: magnesium oxide: zirconium oxide =5:2:1:1: 100;

in the step 2), graphite powder, polyethylene glycol and B are added into the powder raw materials₂O₃The mass ratio of the paraffin, the polymethyl methacrylate and the hexamethyldisilane is as follows:

powder raw materials: graphite powder: polyethylene glycol: b is₂O₃: paraffin wax: polymethyl methacrylate: hexamethyldisilane =100: 3-5: 1-2: 5-8: 6-10: 3-5: 6-7;

in the step 3), adding dioctyl phthalate into the mixed product according to the mass ratio:

mixing products: dioctyl phthalate =20: 1-2.

The invention has the beneficial effects that:

1. the optical fiber jumper prepared by the method has good sealing performance and tensile property at the joint of the cable body and the joint component, so that the durability of the optical fiber jumper is obviously improved, the optical fiber jumper is not easy to damage by water inflow and break, and the service life is obviously prolonged;

2. the invention optimizes the preparation process of the optical fiber ferrule, and the prepared optical fiber ferrule has improved compressive strength which is superior to the traditional zirconia type optical fiber ferrule.

Drawings

FIG. 1 is a schematic view of the structure at the fiber jumper splice assembly of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an enlarged view of a portion of FIG. 1 at B;

fig. 4 is a schematic structural view of the mating buckle of the present invention.

Detailed Description

The following is a detailed description with reference to examples:

as shown in figures 1-4, the optical fiber patch cord comprises an optical fiber body 1, wherein optical fibers 2 are arranged in the optical fiber body 1, and joint components are arranged at two ends of the optical fiber body 1. The splice assembly includes a fiber stub 3, a connecting cap 4, a first nut 5, a second nut 6 and a third nut 7. The connecting cap 4 is a tube-shaped structure, the optical fiber ferrule 3 is installed in the connecting cap 4, and a through hole for accommodating the optical fiber 2 is processed in the middle of the optical fiber ferrule 3, so that the optical fiber 2 extends to the end of the optical fiber ferrule 3 through the optical fiber ferrule 3. The front end of the connecting cap 4 is provided with a socket 8 for being plugged with equipment. The outer wall of the tail end of the connecting cap 4 is provided with an external thread 9, and the inner wall of the tail end of the connecting cap is provided with an internal thread 10. The outer contour of the front end of the first nut 5 is a hexagonal structure 11, the outer contour of the rear end of the first nut 5 is a cylindrical structure 12, the front end of the first nut is provided with an internal thread, and the rear end of the first nut is provided with an external thread. Hexagonal structure 11 is installed on the external screw thread 9 of connecting the cap through screw-thread fit, and the rear end face of connecting cap 4 is processed there is seal groove 13, is equipped with sealing washer 14 in the seal groove 13, and sealing washer 14 is by hexagonal structure 11 and the extrusion of connecting cap 4 formation seal structure. The inboard of first nut 5 is equipped with protective sleeve 15, and the rear end protrusion of optic fibre lock pin 3 is connected the cap and is stretched into protective sleeve 15 in, and protective sleeve 15's front end passes through screw thread fixed connection with the terminal inner wall of connecting cap 4. The inner wall of the protective sleeve 15 is provided with a snap ring 16. The end of the optical fiber body 1 is provided with a protruding part 17, and the protruding part 17 extends into the protective sleeve 15 and is clamped into the snap ring 16 to prevent the optical fiber body 1 from being separated from the protective sleeve 15. The front end of the boss 17 is closely attached to the rear end face of the optical fiber ferrule 3. The inner wall of the front end of the second screw cap 6 is provided with an internal thread, and the front end of the second screw cap 6 is connected with the external thread of the rear end of the first screw cap 5. The diameter of the inner cavity of the second nut 6 is reduced at the rear end to form a sealing step 18. A sealing ring placing groove 19 is processed on the rear end face of the first screw cap 5, and a first sealing assembly is arranged in the sealing ring placing groove 19. The first sealing assembly comprises a front sealing ring 20, a rear sealing ring 21 and a sealing pad ring 22, the rear sealing ring 21 is placed in a sealing ring placing groove 19, a convex portion 23 is arranged at the front end of the rear sealing ring 21, the front sealing ring 20 is of a sheet annular structure, the inner surface of the rear side of the front sealing ring is in contact with the convex portion 23, the outer surface of the front side of the front sealing ring is in contact with a sealing step 18, and the sealing pad ring 22 is located on the inner side of the front sealing ring 20 and fixed on the outer surface of the protective sleeve. When the second nut is gradually screwed, the sealing step of the second nut and the convex part of the rear sealing ring simultaneously extrude the front sealing ring, so that the front sealing ring rotates and deforms, the front end of the front sealing ring downwards deforms and gradually compresses the sealing gasket ring to form a sealing surface, the sealing step and the front sealing ring as well as the convex part of the rear sealing ring and the sealing ring can form good hard sealing surfaces, and the sealing effect is good. The rear end of the protective sleeve 15 protrudes through the second nut 6 to the rear side of the second nut 6. The rear end of the protective sleeve 15 is provided with external threads. The third nut 7 is installed at the rear end of the protective sleeve 15 through threaded connection, and a second sealing assembly is arranged between the third nut 7 and the protective sleeve 15. The second sealing assembly comprises a second front sealing ring 24, a second rear sealing ring 25 and a second sealing gasket ring 26, the front end of the second rear sealing ring 25 is processed into a step opening 27, the step opening 27 is clamped at the rear end of the protective sleeve, and the rear end of the second rear sealing ring 25 forms a sealing pressing part 28. The second front sealing ring 24 is a ring-shaped structure, the rear side of the second front sealing ring 24 is attached to the inner wall of the third screw cap 7, and the outer surface of the front side of the second front sealing ring 24 is in close contact with the sealing and compressing portion 28. The second sealing backing ring 26 is located on the inner side of the second front sealing ring and fixed on the outer surface of the optical fiber body, when the third nut is gradually screwed, the third nut extrudes the second front sealing ring forward, the front end of the second front sealing ring is inwards rotated and deformed due to the extrusion effect of the second rear sealing ring, the second sealing backing ring is gradually compressed to form a sealing surface, meanwhile, the inner wall of the third nut, the second front sealing ring, the sealing compression part of the second rear sealing ring, the second front sealing ring and the second rear sealing ring as well as the protective sleeve can form a good hard sealing surface due to the extrusion effect, and the third nut is penetrated out from the rear side of the optical fiber body.

The assembling steps of the optical fiber jumper wire are as follows:

(1) placing a sealing ring into a sealing groove at the rear end of the connecting cap, and then matching a first screw cap on the connecting cap through threads and pressing the sealing ring;

(2) sleeving a protective sleeve on an optical fiber body with an optical fiber ferrule, inserting the optical fiber ferrule into a connecting cap, and screwing the protective sleeve into an internal thread on the inner wall of the tail end of the connecting cap to tightly press the optical fiber ferrule;

(3) placing a rear sealing ring in the sealing ring placing groove, placing a front sealing ring above the rear sealing ring, screwing a second screw cap into the first screw cap, wherein when the second screw cap is gradually screwed, a sealing step of the second screw cap and a convex part of the rear sealing ring simultaneously extrude the front sealing ring so that the front sealing ring is rotationally deformed, the front end of the front sealing ring is downwards deformed and gradually presses the sealing backing ring to form a sealing surface, and the sealing step and the front sealing ring, and the convex part of the rear sealing ring and the sealing ring can also form a good hard sealing surface;

(4) the rear end of the protective sleeve is clamped with the second rear sealing ring, the second front sealing ring is placed above the second rear sealing ring, then the third screw cap is screwed into the protective sleeve, when the third screw cap is gradually screwed, the third screw cap extrudes the second front sealing ring forwards, the front end of the second front sealing ring is rotated inwards to deform due to the extrusion effect of the second rear sealing ring, the second sealing cushion ring is gradually compressed to form a sealing surface, and meanwhile, the inner wall of the third screw cap, the second front sealing ring, the sealing compression part of the second rear sealing ring, the second front sealing ring and the protective sleeve can also form a good hard sealing surface due to the action of the extrusion force.

After long-time use, dust in the air easily enters the connecting cap and adheres to the end face of the optical fiber 2, so that normal transmission of the optical fiber is affected, and therefore a dust-proof chamber 29 can be arranged at the front end of the connecting cap 4, the front end of the dust-proof chamber 29 is a socket 8, and an opening 30 is processed at the rear end of the dust-proof chamber 29 to be communicated with the optical fiber ferrule 3. Install dustproof foam-rubber cushion 31 in the dust protected room 29, dustproof foam-rubber cushion 31 is full of dust protected room 29 and fixes in the dust protected room, and the front and back both sides of dustproof foam-rubber cushion are all processed there is conical surface 32, and the conical surface of both sides is linked together through grafting passageway 33. When the connector assembly is not plugged on the equipment, the dustproof spongy cushion 31 blocks the plugging channel 33 due to the elastic action to prevent dust from entering, and when the connector assembly is plugged on the equipment, the equipment connector jacks the plugging channel 33 to be in butt joint with the optical fiber ferrule.

Optical fiber patch cords are typically used in pairs, with one receive and one transmit, all connected with one and the same optical fiber cord. Tens or even hundreds of optical fibers are arranged on one screen of one cabinet to form a wire group. When the optical fiber patch cord is overhauled, a pair of patch cords needs to be managed from one optical fiber patch cord, and time and labor are wasted. In order to solve the technical problem, patent CN103439771A discloses an optical fiber jumper wire pairing card, which mainly uses the elasticity of a C-shaped groove to fix an optical fiber jumper wire, but in practical use, it is found that the fixing capability of the C-shaped groove is limited, the optical fiber jumper wire is easy to be separated from the pairing card when the pulling force of the optical fiber jumper wire is slightly large or the pairing cards collide with each other, and once the optical fiber jumper wire is separated (even separated from one optical fiber jumper wire), it is also a time-consuming and labor-consuming process to arrange the separated optical fiber jumper wire among a plurality of optical fibers and to assemble the pairing card again. In addition, the clamping force of the pairing card on the optical fiber jumper wire is difficult to control, if the clamping force is too large, the surface of the optical fiber body is easily scratched, and if the clamping force is too small, the pairing card is easily dropped or slides on the optical fiber body. To this end, the invention improves the pairing card: the optical fiber jumper wire further comprises a matching buckle 34, the matching buckle 34 comprises an upper buckle cover 35 and a lower buckle cover 36, one sides of the upper buckle cover 35 and the lower buckle cover 36 are connected through a connecting body 37, and the other side opposite to the connecting body is provided with a clamping assembly. Two buckling grooves 38 are formed in one side, opposite to the upper clamping cover 35 and the lower clamping cover 36, of the upper clamping cover and correspond to the two buckling grooves of the lower clamping cover one to one. The clamping assembly comprises a clamping hook 39 and a clamping opening 40, and the clamping hook can be clamped into the clamping opening to fixedly connect the upper clamping cover and the lower clamping cover with one side opposite to the connecting body. During the use, the optical fiber bodies of the two paired optical fiber patch cords are placed in the two clamping grooves 38 of the lower clamping cover, and then the upper clamping cover 35 is covered, so that the clamping hooks are clamped into the clamping openings to fix the upper clamping cover and the lower clamping cover. In order to prevent the mating buckle 34 from sliding or clamping the optical fiber jumper wire, a non-slip rubber pad 41 is bonded in the buckle groove.

The invention requires that the optical fiber ferrule 3 has certain compressive strength, so that the preparation process of the optical fiber ferrule 3 is optimized, and the preparation process of the optical fiber ferrule 3 is described by combining the embodiment as follows:

example 1

The preparation method of the optical fiber ferrule of the embodiment comprises the following steps:

1) titanium dioxide according to mass ratio: alumina: cerium oxide: magnesium oxide: mixing titanium dioxide, aluminum oxide, cerium oxide, magnesium oxide and zirconium oxide after surface treatment according to the proportion of zirconium oxide =5:2:1:1:100, presintering the mixture for 2h in an inert gas environment at 700 ℃, adding stearic acid accounting for 5% of the mixture in mass after presintering, carrying out ball milling, and sieving with a screen with the mesh number of 1000 to obtain a powder raw material;

2) adding graphite powder, polyethylene glycol and B into the powder raw material₂O₃Paraffin, polymethyl methacrylate, hexamethyldisilane, graphite powder, polyethylene glycol and B₂O₃The mass ratio of the addition amount of the paraffin, the polymethyl methacrylate and the hexamethyldisilane to the powder raw materials is as follows:

powder raw materials: graphite powder: polyethylene glycol: b is₂O₃: paraffin wax: polymethyl methacrylate: hexamethyldisilane =100:3:1:5:6:3: 6;

placing the mixture in a sealed container after mixing, filling inert gas into the sealed container to expel air and keep the pressure in the container at 3-5 standard atmospheric pressures, sealing the sealed container, heating the mixture to 150-160 ℃, magnetically stirring for 2 hours, cooling to room temperature after stirring, and taking out the mixed product;

3) adding dioctyl phthalate with the mass of 1/20 into the mixed product, performing compression molding to obtain a blank, sintering to obtain the optical fiber ferrule, wherein the sintering temperature is 1420 ℃, and performing heat preservation for 2 hours;

the surface treatment method of the titanium dioxide comprises the following steps:

a. preparing an oxalic acid solution with solute mass percent of 5%, soaking titanium dioxide powder in the oxalic acid solution for 5min, filtering and separating the titanium dioxide powder, and washing with deionized water;

b. b, preparing an aqueous solution of chloroiridic acid and niobium oxalate, wherein the mass percentage of the chloroiridic acid in the solution is 5%, the mass percentage of the niobium oxalate in the solution is 2%, soaking the titanium dioxide powder treated in the step a in an acetone solution for degreasing, then washing the titanium dioxide powder with deionized water, drying the titanium dioxide powder, soaking the dried powder in the aqueous solution of chloroiridic acid and niobium oxalate for 20min, filtering the powder after soaking, drying the powder at the temperature of 100-120 ℃, and then transferring the powder to the environment at the temperature of 400 ℃ for calcining for 2h to obtain a solid phase A;

c. preparing an aqueous solution of nickel chloride, wherein the mass percentage of the nickel chloride in the aqueous solution is 8%, soaking the solid phase A in the aqueous solution of nickel chloride, preserving heat in a water bath at 50-60 ℃ for 30min, taking out and drying the solid phase A, immediately soaking in an aqueous solution of potassium borohydride for 10min, performing solid-liquid separation after soaking to obtain a solid phase B, wherein the concentration of potassium borohydride in the aqueous solution of potassium borohydride is 3g/L, and adjusting the pH of the aqueous solution of potassium borohydride to 13-14 by using sodium hydroxide;

d. washing the solid phase B with deionized water to remove potassium borohydride, then soaking the solid phase B in a reaction solution, heating the solid phase B in a water bath to 75-80 ℃, fully stirring, adding sodium hypophosphite into the reaction solution in the stirring process, continuously stirring and preserving heat for 2 hours, wherein the reaction solution is an aqueous solution of nickel sulfate, dimethyl carbonate, acetic acid, thiourea and polyethylene glycol, and the concentrations of all components in the reaction solution are respectively as follows: 15g/L of nickel sulfate, 3g/L of dimethyl carbonate, 3g/L of acetic acid, 6mg/L of thiourea and 1 g/L of polyethylene glycol, and the balance of water, wherein the PH of the reaction solution is adjusted to 4.5-5 by using dilute sulfuric acid; the adding amount of the sodium hypophosphite is 20g/1L of reaction solution;

e. and (3) after the heat preservation is finished, carrying out solid-liquid separation to obtain a solid phase C, washing the solid phase C with deionized water, and drying to obtain the titanium dioxide after the surface treatment.

Example 2

The preparation method of the optical fiber ferrule of the embodiment comprises the following steps:

1) titanium dioxide according to mass ratio: alumina: cerium oxide: magnesium oxide: mixing titanium dioxide, aluminum oxide, cerium oxide, magnesium oxide and zirconium oxide after surface treatment according to the proportion of zirconium oxide =5:2:1:1:100, presintering the mixture for 3h in an inert gas environment at 720 ℃, adding stearic acid accounting for 6% of the mixture in mass after presintering, carrying out ball milling, and sieving with a screen with the mesh number of 1000 to obtain a powder raw material;

2) adding graphite powder, polyethylene glycol and B into the powder raw material₂O₃Paraffin, polymethyl methacrylate, hexamethyldisilane, graphite powder, polyethylene glycol and B₂O₃Paraffin wax, polymethyl methacrylateThe mass ratio of the addition amount of the hexamethyldisilane to the powder raw material is as follows:

powder raw materials: graphite powder: polyethylene glycol: b is₂O₃: paraffin wax: polymethyl methacrylate: hexamethyldisilane =100:4:1:7:9:4: 7;

placing the mixture in a sealed container after mixing, filling inert gas into the sealed container to expel air and keep the pressure in the container at 3-5 standard atmospheric pressures, sealing the sealed container, heating the mixture to 150-160 ℃, magnetically stirring for 3 hours, cooling to room temperature after stirring, and taking out the mixed product;

3) adding dioctyl phthalate with the mass of 1/15 into the mixed product, performing compression molding to obtain a blank, sintering to obtain the optical fiber ferrule, wherein the sintering temperature is 1420 ℃, and performing heat preservation for 2 hours;

the surface treatment method of the titanium dioxide comprises the following steps:

a. preparing an oxalic acid solution with solute mass percent of 7%, soaking titanium dioxide powder in the oxalic acid solution for 6min, filtering and separating the titanium dioxide powder, and washing with deionized water;

b. b, preparing an aqueous solution of chloroiridic acid and niobium oxalate, wherein the mass percentage of the chloroiridic acid in the solution is 8%, the mass percentage of the niobium oxalate in the solution is 4%, soaking the titanium dioxide powder treated in the step a in an acetone solution for degreasing, then washing the titanium dioxide powder with deionized water, drying the titanium dioxide powder, soaking the dried powder in the aqueous solution of chloroiridic acid and niobium oxalate for 20min, filtering the powder after soaking, drying the powder at the temperature of 100-120 ℃, and then transferring the powder to the environment at the temperature of 420 ℃ for calcining for 1h to obtain a solid phase A;

c. preparing an aqueous solution of nickel chloride, wherein the mass percentage of the nickel chloride in the aqueous solution is 9%, soaking the solid phase A in the aqueous solution of nickel chloride, preserving heat in a water bath at 50-60 ℃ for 30min, taking out and drying the solid phase A, immediately soaking in an aqueous solution of potassium borohydride for 10min, performing solid-liquid separation after soaking to obtain a solid phase B, wherein the concentration of potassium borohydride in the aqueous solution of potassium borohydride is 4g/L, and adjusting the pH of the aqueous solution of potassium borohydride to 13-14 by using sodium hydroxide;

d. washing the solid phase B with deionized water to remove potassium borohydride, then soaking the solid phase B in a reaction solution, heating the solid phase B in a water bath to 75-80 ℃, fully stirring, adding sodium hypophosphite into the reaction solution in the stirring process, continuously stirring and preserving heat for 3 hours, wherein the reaction solution is an aqueous solution of nickel sulfate, dimethyl carbonate, acetic acid, thiourea and polyethylene glycol, and the concentrations of all components in the reaction solution are respectively as follows: the method comprises the following steps of (1) adjusting the pH of a reaction solution to 4.5-5 by using dilute sulfuric acid, wherein the nickel sulfate is 18g/L, the dimethyl carbonate is 4g/L, the acetic acid is 4g/L, the thiourea is 7mg/L and the polyethylene glycol is 2 g/L, and the balance is water; the adding amount of the sodium hypophosphite is 23g/1L of reaction solution;

e. and (3) after the heat preservation is finished, carrying out solid-liquid separation to obtain a solid phase C, washing the solid phase C with deionized water, and drying to obtain the titanium dioxide after the surface treatment.

Example 3

The preparation method of the optical fiber ferrule of the embodiment comprises the following steps:

1) titanium dioxide according to mass ratio: alumina: cerium oxide: magnesium oxide: mixing titanium dioxide, aluminum oxide, cerium oxide, magnesium oxide and zirconium oxide after surface treatment according to the proportion of zirconium oxide =5:2:1:1:100, presintering the mixture for 2 hours at 750 ℃ in an inert gas environment, adding stearic acid accounting for 7% of the mixture in mass after presintering, carrying out ball milling, and sieving with a screen with the mesh number of 1000 to obtain a powder raw material;

2) adding graphite powder, polyethylene glycol and B into the powder raw material₂O₃Paraffin, polymethyl methacrylate, hexamethyldisilane, graphite powder, polyethylene glycol and B₂O₃The mass ratio of the addition amount of the paraffin, the polymethyl methacrylate and the hexamethyldisilane to the powder raw materials is as follows:

powder raw materials: graphite powder: polyethylene glycol: b is₂O₃: paraffin wax: polymethyl methacrylate: hexamethyldisilane =100:5:2:8:10:5: 7;

placing the mixture in a sealed container after mixing, filling inert gas into the sealed container to expel air and keep the pressure in the container at 3-5 standard atmospheric pressures, sealing the sealed container, heating the mixture to 150-160 ℃, magnetically stirring for 3 hours, cooling to room temperature after stirring, and taking out the mixed product;

3) adding dioctyl phthalate with the mass of 1/10 into the mixed product, performing compression molding to obtain a blank, sintering to obtain the optical fiber ferrule, wherein the sintering temperature is 1420 ℃, and performing heat preservation for 2 hours;

the surface treatment method of the titanium dioxide comprises the following steps:

a. preparing an oxalic acid solution with solute mass fraction of 10%, soaking titanium dioxide powder in the oxalic acid solution for 8min, filtering and separating the titanium dioxide powder, and washing with deionized water;

b. b, preparing an aqueous solution of chloroiridic acid and niobium oxalate, wherein the mass percentage of the chloroiridic acid in the solution is 10%, the mass percentage of the niobium oxalate in the solution is 5%, soaking the titanium dioxide powder treated in the step a in an acetone solution for degreasing, then washing the titanium dioxide powder with deionized water, drying the titanium dioxide powder, soaking the dried powder in the aqueous solution of chloroiridic acid and niobium oxalate for 20min, filtering the powder after soaking, drying the powder at the temperature of 100-120 ℃, and then transferring the powder to the environment at the temperature of 450 ℃ for calcining for 1h to obtain a solid phase A;

c. preparing a nickel chloride aqueous solution, wherein the mass percentage of nickel chloride in the solution is 10%, soaking the solid phase A in the nickel chloride aqueous solution, preserving heat in a water bath at 50-60 ℃ for 30min, taking out and drying the solid phase A, immediately soaking in a potassium borohydride aqueous solution for 10min, performing solid-liquid separation after soaking to obtain a solid phase B, wherein the concentration of potassium borohydride in the potassium borohydride aqueous solution is 5g/L, and adjusting the pH of the potassium borohydride aqueous solution to 13-14 by using sodium hydroxide;

d. washing the solid phase B with deionized water to remove potassium borohydride, then soaking the solid phase B in a reaction solution, heating the solid phase B in a water bath to 75-80 ℃, fully stirring, adding sodium hypophosphite into the reaction solution in the stirring process, continuously stirring and preserving heat for 4 hours, wherein the reaction solution is an aqueous solution of nickel sulfate, dimethyl carbonate, acetic acid, thiourea and polyethylene glycol, and the concentrations of all components in the reaction solution are respectively as follows: 20g/L of nickel sulfate, 5g/L of dimethyl carbonate, 5g/L of acetic acid, 8mg/L of thiourea and 2 g/L of polyethylene glycol, and the balance of water, wherein the PH of the reaction solution is adjusted to 4.5-5 by using dilute sulfuric acid; the adding amount of the sodium hypophosphite is 25g/1L of reaction solution;

e. and (3) after the heat preservation is finished, carrying out solid-liquid separation to obtain a solid phase C, washing the solid phase C with deionized water, and drying to obtain the titanium dioxide after the surface treatment.

Example 4

The preparation method of the optical fiber ferrule of the present embodiment is the same as the preparation method described in embodiment 2, and the difference is only that: the zirconia of this embodiment is pre-soaked in the silica sol, and after soaking, the zirconia is taken out and dried, and the silica mass percentage in the silica sol is 30.4%. The dried zirconia is then mixed with titanium dioxide, alumina, ceria and magnesia for the subsequent steps. Except for the above differences, the preparation method of this example is identical to the preparation method described in example 2 in other processes, parameters, and the like.

Comparative example 1

The method of making the fiber stub of this comparative example is the same as that described in example 2, except that: the titanium dioxide of this example was directly mixed with other oxides without surface treatment and then subjected to the subsequent steps. Except for the above differences, the preparation method of this example is identical to the preparation method described in example 2 in other processes, parameters, and the like.

Comparative example 2

The preparation method of the optical fiber ferrule of the comparative example comprises the following steps:

1) titanium dioxide according to mass ratio: alumina: cerium oxide: magnesium oxide: mixing titanium dioxide, aluminum oxide, cerium oxide, magnesium oxide and zirconium oxide after surface treatment according to the proportion of zirconium oxide =5:2:1:1:100, presintering the mixture for 3h in an inert gas environment at 720 ℃, adding stearic acid accounting for 6% of the mixture in mass after presintering, carrying out ball milling, and sieving with a screen with the mesh number of 1000 to obtain a powder raw material;

2) adding graphite powder, polyethylene glycol and B into the powder raw material₂O₃Paraffin, polymethyl methacrylate, hexamethyldisilane, graphite powder, polyethylene glycol and B₂O₃Paraffin wax, polymethyl methacrylate,The mass ratio of the addition amount of hexamethyldisilane to the powder raw material is as follows:

powder raw materials: graphite powder: polyethylene glycol: b is₂O₃: paraffin wax: polymethyl methacrylate: hexamethyldisilane =100:4:1:7:9:4: 7;

placing the mixture in a sealed container after mixing, filling inert gas into the sealed container to expel air and keep the pressure in the container at 3-5 standard atmospheric pressures, sealing the sealed container, heating the mixture to 150-160 ℃, magnetically stirring for 3 hours, cooling to room temperature after stirring, and taking out the mixed product;

3) adding dioctyl phthalate with the mass of 1/15 into the mixed product, performing compression molding to obtain a blank, sintering to obtain the optical fiber ferrule, wherein the sintering temperature is 1420 ℃, and performing heat preservation for 2 hours;

the surface treatment method of the titanium dioxide comprises the following steps:

a. preparing an oxalic acid solution with solute mass percent of 7%, soaking titanium dioxide powder in the oxalic acid solution for 6min, filtering and separating the titanium dioxide powder, and washing with deionized water;

b. preparing a nickel chloride aqueous solution, wherein the mass percentage of nickel chloride in the solution is 9%, soaking titanium dioxide powder in the nickel chloride aqueous solution, preserving heat in a water bath at 50-60 ℃ for 30min, taking out and drying the titanium dioxide powder, immediately soaking the titanium dioxide powder in a potassium borohydride aqueous solution for 10min, performing solid-liquid separation after soaking to obtain a solid phase A, wherein the concentration of potassium borohydride in the potassium borohydride aqueous solution is 4g/L, and adjusting the pH of the potassium borohydride aqueous solution to 13-14 by using sodium hydroxide;

d. washing the solid phase A with deionized water to remove potassium borohydride, then soaking the solid phase A in a reaction solution, heating the solid phase A in a water bath to 75-80 ℃, fully stirring, adding sodium hypophosphite into the reaction solution in the stirring process, continuously stirring and preserving heat for 3 hours, wherein the reaction solution is an aqueous solution of nickel sulfate, dimethyl carbonate, acetic acid, thiourea and polyethylene glycol, and the concentrations of all components in the reaction solution are respectively as follows: the method comprises the following steps of (1) adjusting the pH of a reaction solution to 4.5-5 by using dilute sulfuric acid, wherein the nickel sulfate is 18g/L, the dimethyl carbonate is 4g/L, the acetic acid is 4g/L, the thiourea is 7mg/L and the polyethylene glycol is 2 g/L, and the balance is water; the adding amount of the sodium hypophosphite is 23g/1L of reaction solution;

e. and (3) after the heat preservation is finished, carrying out solid-liquid separation to obtain a solid phase B, washing the solid phase B with deionized water, and drying to obtain the titanium dioxide after the surface treatment.

Example 5

The compressive strength test specimens, which were cylindrical specimens having a bottom surface of 2cm in diameter and 3cm in height, were prepared as described in examples 1 to 4 and comparative examples 1 to 2 above, and the compressive strengths measured on the specimens prepared in the respective examples and comparative examples are shown in Table 1.

TABLE 1

The technical solutions provided by the present invention are described in detail above, and for those skilled in the art, the ideas according to the embodiments of the present invention may be changed in the specific implementation manners and the application ranges, and in summary, the content of the present description should not be construed as limiting the present invention.

Claims (8)

1. An optical fiber jumper comprises an optical fiber body, wherein joint components are arranged at two ends of the optical fiber body, characterized in that the joint component comprises an optical fiber inserting core, a connecting cap, a first screw cap, a second screw cap and a third screw cap, the connecting cap is of a pipe barrel-shaped structure, the optical fiber insertion core is installed in the connecting cap, the front end of the connecting cap is provided with a socket, the outer wall of the tail end of the connecting cap is processed with external threads, the inner wall of the tail end of the connecting cap is processed with internal threads, the outer contour of the front end of the first nut is of a hexagonal structure, the outer contour of the rear end of the first nut is of a cylindrical structure, the front end of the first nut is provided with an internal thread, the rear end of the first nut is provided with an external thread, the hexagonal structure is installed on the external thread of the connecting cap in a thread fit way, a sealing groove is processed on the rear end surface of the connecting cap, a sealing ring is arranged in the sealing groove and is extruded by the hexagonal structure and the connecting cap to form a sealing structure; the optical fiber protection device comprises a first nut, an optical fiber insertion core, a connecting cap, a protection sleeve, a clamping ring, a protrusion part and a second nut, wherein the protection sleeve is arranged on the inner side of the first nut, the rear end of the optical fiber insertion core protrudes out of the connecting cap and extends into the protection sleeve, the front end of the protection sleeve is fixedly connected with the inner wall of the tail end of the connecting cap through threads, the inner wall of the protection sleeve is provided with the clamping ring, the tail end of an optical fiber body is provided with the protrusion part, the protrusion part extends into the protection sleeve and is; the inner wall of the front end of the second nut is processed with an internal thread, the front end of the second nut is in external thread connection with the rear end of the first nut, the diameter of an inner cavity of the second nut is reduced at the rear end to form a sealing step, a sealing ring placing groove is processed on the rear end face of the first nut, a first sealing assembly is arranged in the sealing ring placing groove and comprises a front sealing ring, a rear sealing ring and a sealing backing ring, the rear sealing ring is placed in the sealing ring placing groove, a convex part is arranged at the front end of the rear sealing ring, the front sealing ring is of a sheet ring structure, the inner surface of the rear side of the front sealing ring is in contact with the convex part, the outer surface of the front sealing ring is in contact with the sealing step, the sealing backing ring is positioned at the inner side of the front sealing ring and is fixed on the outer surface of the protective sleeve, and the rear end of the protective sleeve penetrates through, the rear end of the protective sleeve is provided with an external thread, the third screw cap is connected and arranged at the rear end of the protective sleeve through a thread, a second sealing component is arranged between the third screw cap and the protective sleeve, the second seal assembly includes a second front seal ring, a second rear seal ring, and a second gasket ring, the front end of the second rear sealing ring is processed into a step opening which is clamped at the rear end part of the protective sleeve, the rear end of the second rear sealing ring forms a sealing and pressing part, the second front sealing ring is of a sheet ring-shaped structure, the rear side of the second front sealing ring is attached to the inner wall of the third screw cap, the outer surface of the front side of the second front sealing ring is tightly contacted with the sealing and pressing part, the second sealing gasket ring is positioned on the inner side of the second front sealing ring and fixed on the outer surface of the optical fiber body, and the rear side of the optical fiber body penetrates out of the third screw cap;

the preparation method of the optical fiber ferrule comprises the following steps:

1) mixing the titanium dioxide, the aluminum oxide, the cerium dioxide, the magnesium oxide and the zirconium oxide which are subjected to surface treatment, pre-burning the mixture for 2-4 hours at 700-750 ℃ in an inert gas environment, adding stearic acid accounting for 5-7% of the mixture after pre-burning, ball-milling, and screening through a screen with the mesh number of 1000-1500 to obtain a powder raw material;

2) adding graphite powder, polyethylene glycol and B into the powder raw material₂O₃Fully mixing paraffin, polymethyl methacrylate and hexamethyldisilane, placing the mixture into a sealed container after mixing, filling inert gas into the sealed container to expel air and keeping the pressure in the container at 3-5 standard atmospheric pressures, sealing the sealed container, heating the mixture to 150-160 ℃, magnetically stirring for 2-3 hours, cooling to room temperature after stirring, and taking out the mixed product;

3) adding dioctyl phthalate into the mixed product, performing press molding to obtain a blank, and sintering to obtain the optical fiber ferrule;

the surface treatment method of the titanium dioxide comprises the following steps:

a. preparing an oxalic acid solution with solute mass percent of 5-10%, soaking titanium dioxide powder in the oxalic acid solution for 5-8 min, filtering and separating the titanium dioxide powder, and washing with deionized water;

b. preparing an aqueous solution of chloroiridic acid and niobium oxalate, wherein the mass percentage of chloroiridic acid in the solution is 5-10%, and the mass percentage of niobium oxalate in the solution is 2-5%, soaking the titanium dioxide powder treated in the step a in an acetone solution for degreasing, then washing with deionized water, drying, soaking the dried powder in the aqueous solution of chloroiridic acid and niobium oxalate for more than 20min, filtering the powder after soaking, drying at the temperature of 100-120 ℃, and then transferring to the temperature of 400-450 ℃ for calcining for 1-2 h to obtain a solid phase A;

c. preparing an aqueous solution of nickel chloride, wherein the mass percentage of the nickel chloride in the aqueous solution is 8-10%, soaking the solid phase A in the aqueous solution of nickel chloride, keeping the temperature of the aqueous solution in a water bath at 50-60 ℃ for more than 30min, taking out and drying the solid phase A, immediately soaking the solid phase A in an aqueous solution of potassium borohydride for more than 10min, after soaking, performing solid-liquid separation to obtain a solid phase B, wherein the concentration of the potassium borohydride in the aqueous solution of potassium borohydride is 3-5 g/L, and adjusting the pH of the aqueous solution of potassium borohydride to 13-14 by using sodium hydroxide;

d. washing the solid phase B with deionized water to remove potassium borohydride, then soaking the solid phase B in a reaction solution, heating the solid phase B in a water bath to 75-80 ℃, fully stirring, adding sodium hypophosphite into the reaction solution in the stirring process, continuously stirring and preserving heat for 2-4 hours, wherein the reaction solution is an aqueous solution of nickel sulfate, dimethyl carbonate, acetic acid, thiourea and polyethylene glycol, and the concentrations of all components in the reaction solution are respectively as follows: 15-20 g/L of nickel sulfate, 3-5 g/L of dimethyl carbonate, 3-5 g/L of acetic acid, 6-8 mg/L of thiourea and 1-2 g/L of polyethylene glycol, and the balance of water, wherein the PH of the reaction solution is adjusted to 4.5-5 by using dilute sulfuric acid; the adding amount of the sodium hypophosphite is 20-25 g/1L of reaction solution;

e. and (3) after the heat preservation is finished, carrying out solid-liquid separation to obtain a solid phase C, washing the solid phase C with deionized water, and drying to obtain the titanium dioxide after the surface treatment.

2. The optical fiber jumper wire according to claim 1, wherein a dustproof chamber is arranged at the front end of the connecting cap, the socket is arranged at the front end of the dustproof chamber, an opening communicated with the optical fiber inserting core is processed at the rear end of the dustproof chamber, a dustproof sponge cushion is installed in the dustproof chamber, the dustproof sponge cushion is filled in the dustproof chamber and fixed in the dustproof chamber, tapered surfaces are processed on the front side and the rear side of the dustproof sponge cushion, and the tapered surfaces on the two sides are communicated through an inserting channel.

3. The optical fiber jumper wire according to claim 1 or 2, characterized in that the optical fiber jumper wire further comprises a pairing buckle, the pairing buckle comprises an upper buckle cover and a lower buckle cover, one sides of the upper buckle cover and the lower buckle cover are connected through a connector, the other side opposite to the connector is provided with a clamping component, two buckle grooves are respectively arranged on one sides of the upper buckle cover and the lower buckle cover, the two buckle grooves of the upper buckle cover are in one-to-one correspondence with the two buckle grooves of the lower buckle cover, the clamping component comprises a clamping hook and a clamping opening, and the clamping hook can be clamped into the clamping opening to fixedly connect the upper buckle cover and the lower buckle cover with one side opposite to the connector.

4. The optical fiber patch cord according to claim 3, wherein an anti-slip rubber pad is bonded in the snap-fit groove.

5. The optical fiber patch cord according to claim 3, wherein a square patch is fixedly mounted on the top surface of the upper card cover and/or the bottom surface of the lower card cover, a gap is reserved between the square patch and the top surface of the upper card cover and/or the bottom surface of the lower card cover to serve as a mark card placing groove, three sides of the square patch are sealed, the other side is opened to form a notch, and a mark card can be placed in the mark card placing groove.

6. The method for making the optical fiber patch cord of claim 1, comprising the steps of:

(1) placing a sealing ring into a sealing groove at the rear end of the connecting cap, and then matching a first screw cap on the connecting cap through threads and pressing the sealing ring;

(2) sleeving a protective sleeve on an optical fiber body with an optical fiber ferrule, inserting the optical fiber ferrule into a connecting cap, and screwing the protective sleeve into an internal thread on the inner wall of the tail end of the connecting cap to tightly press the optical fiber ferrule;

(3) placing a rear sealing ring in the sealing ring placing groove, placing a front sealing ring above the rear sealing ring, screwing a second screw cap into the first screw cap, wherein when the second screw cap is gradually screwed, a sealing step of the second screw cap and a convex part of the rear sealing ring simultaneously extrude the front sealing ring so that the front sealing ring is rotationally deformed, the front end of the front sealing ring is downwards deformed and gradually presses the sealing backing ring to form a sealing surface, and the sealing step and the front sealing ring, and the convex part of the rear sealing ring and the sealing ring can also form a good hard sealing surface;

(4) the rear end of the protective sleeve is clamped with the second rear sealing ring, the second front sealing ring is placed above the second rear sealing ring, then the third screw cap is screwed into the protective sleeve, when the third screw cap is gradually screwed, the third screw cap extrudes the second front sealing ring forwards, the front end of the second front sealing ring is rotated inwards to deform due to the extrusion effect of the second rear sealing ring, the second sealing cushion ring is gradually compressed to form a sealing surface, and meanwhile, the inner wall of the third screw cap, the second front sealing ring, the sealing compression part of the second rear sealing ring, the second front sealing ring and the protective sleeve can also form a good hard sealing surface due to the action of the extrusion force.

7. The method for manufacturing the optical fiber jumper wire according to claim 1, wherein the zirconia is soaked in silica sol in advance, and is taken out and dried after the soaking is completed, wherein the silica sol contains 30-31% by mass of silica.

8. The method for manufacturing the optical fiber jumper wire according to claim 1, wherein in the step 1), the mass ratio of titanium dioxide, aluminum oxide, cerium oxide, magnesium oxide and zirconium oxide is as follows:

titanium dioxide: alumina: cerium oxide: magnesium oxide: zirconium oxide =5:2:1:1: 100;

in the step 2), graphite powder, polyethylene glycol and B are added into the powder raw materials₂O₃The mass ratio of the paraffin, the polymethyl methacrylate and the hexamethyldisilane is as follows:

powder raw materials: graphite powder: polyethylene glycol: b is₂O₃: paraffin wax: polymethyl methacrylate: hexamethyldisilane =100: 3-5: 1-2: 5-8: 6-10: 3-5: 6-7;

in the step 3), adding dioctyl phthalate into the mixed product according to the mass ratio:

mixing products: dioctyl phthalate =20: 1-2.

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