CN113031171B

CN113031171B - Ceramic inner packaging shell system of optical fiber multi-path connector and processing technology

Info

Publication number: CN113031171B
Application number: CN202110179826.9A
Authority: CN
Inventors: 辛绍文; 文瑾
Original assignee: Xinhua Xintiandi Fine Ceramics Co ltd
Current assignee: Xinhua Xintiandi Fine Ceramics Co ltd
Priority date: 2021-02-07
Filing date: 2021-02-07
Publication date: 2022-12-20
Anticipated expiration: 2041-02-07
Also published as: CN113031171A

Abstract

The invention discloses a ceramic inner packaging shell system of an optical fiber multi-path connector, which comprises a ceramic shell and a light source refraction ceramic bracket, wherein the ceramic shell is provided with a plurality of light source refraction ceramic light sources; the light source refraction ceramic support comprises a ceramic support and a refraction prism diaphragm, a broken line channel extending along the length direction of the ceramic support is formed in the ceramic support, the starting point, the end point and the corner of the broken line channel are communicated with the corresponding side wall of the ceramic support, a plurality of circular through holes are formed in the side wall, the circular through holes corresponding to the starting point of the broken line channel are light inlet holes, and the other circular through holes are light outlet holes; refraction prism diaphragms are arranged at the light outlet; the ceramic shell is a square shell, and a square placing groove is formed in the ceramic shell; the light source refraction ceramic support is fixedly arranged in the placing groove. The ceramic inner packaging shell system is applied to the optical fiber multi-path connector, so that the transmission efficiency is effectively improved, the signal attenuation is low, and the light energy output by the transmitting optical fiber is coupled to the receiving optical fiber to the maximum extent.

Description

Ceramic inner packaging shell system of optical fiber multi-path connector and processing technology

Technical Field

The invention belongs to the technical field of communication, and particularly relates to a ceramic inner packaging shell system of an optical fiber multi-path connector and a processing technology.

Background

The fifth generation mobile communication technology (5 th generation wireless systems, 5G for short) is the latest generation cellular mobile communication technology, has the characteristics of high speed, high reliability, low time delay, low power consumption, large connection and the like, greatly promotes the popularization of applications such as remote medical treatment, industrial control, remote driving, smart cities, smart homes and the like, and is expected to become a key infrastructure for future economic and social development. The 5G technology is characterized by large traffic volume, which is very difficult to realize by only increasing the number of optical fibers. The traditional one-way transmission optical fiber connector has gradually revealed the defects that the expansion requirement of the optical fiber capacity cannot be met, and the expansion of the optical fiber capacity is imminent. Wavelength division multiplexing is a method for transmitting and reflecting other wavelengths by wavelength, and can solve the problem of insufficient capacity of optical fibers.

Wavelength division multiplexing refers to the transmission of information by two or more optical wavelength signals through different optical channels in the same optical fiber. The optical fiber ceramic connector is used as an indispensable key component of a wavelength division multiplexing technology system, is mainly used for replacing a metal connector, realizes non-permanent multi-path end face precise connection among equipment, equipment and instruments, equipment and optical fibers in the system, and enables light energy output by a transmitting optical fiber to be coupled into a receiving optical fiber to the maximum extent.

Common fiber connector is the three-port design in the existing market, and it needs a plurality of three-port connector concatenations to form, though has advantages such as yields height, but owing to its shortcomings such as bulky, loss is big, the consumptive material is many, with high costs, installation time is long, artifical noble, so need novel fiber connector to replace the three-port connector urgently.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects and defects mentioned in the background art, and provide a ceramic inner packaging shell system of an optical fiber multi-path connector and a processing technology thereof.

In order to solve the technical problems, the technical scheme provided by the invention is as follows:

a ceramic inner packaging shell system of an optical fiber multi-path connector comprises a ceramic shell and a light source refraction ceramic bracket; the light source refraction ceramic support is arranged inside the ceramic shell.

Further, light source refraction ceramic support includes ceramic support, refraction prism diaphragm, ceramic support is square body structure, set up the broken line passageway that extends along its length direction in the ceramic support, the starting point department, the final point department and the corner of broken line passageway all communicate with each other with corresponding ceramic support lateral wall, and form a plurality of circular openings on the lateral wall, the circular opening that the starting point department of broken line passageway corresponds is for advancing the light inlet, and other circular openings are the light outlet, light outlet department all is provided with refraction prism diaphragm.

Furthermore, the side walls of the two sides of the ceramic support are provided with N light outlets, N is a positive integer, N is not less than 3 and not more than 7, the circular openings on the same side of the ceramic support are arranged at equal intervals, and each circular opening and the circular opening on the opposite side of the circular opening have an overlapping area in the width direction of the ceramic support.

Furthermore, each section of linear channel in the broken line channel has the same axis with the circular through openings corresponding to the two ends of the linear channel, the included angle of the broken line channel is 25-30 degrees, the diameter of each circular through opening is 1.1-1.7mm, and the width of each ceramic support is 4-6.5mm.

Further, the ceramic support comprises an upper support and a lower support which are symmetrically arranged up and down, and the upper support and the lower support are both in a square structure;

symmetrical broken line grooves are formed in the opposite surfaces of the upper support and the lower support, the starting point, the end point and the corner of each broken line groove are communicated with the corresponding side walls of the upper support and the lower support, semicircular notches are formed in the side walls, the upper broken line groove and the lower broken line groove are spliced to form a broken line channel, and the upper semicircular notch and the lower semicircular notch which are opposite to each other are spliced to form a circular through hole;

the upper end face of the lower support is provided with a limiting hole, a limiting column matched with the limiting hole is fixed on the lower end face of the upper support corresponding to the limiting hole, and the limiting column is located in the limiting hole and is in contact connection with the limiting hole.

Furthermore, ceramic support is a plurality of with one side the refraction prism diaphragm is fixed jointly by a diaphragm protection groove, the mounting hole has been seted up on the diaphragm protection groove that the refraction prism diaphragm corresponds, the refraction prism diaphragm is fixed in the mounting hole, diaphragm protection groove and ceramic support lateral wall fixed connection.

Furthermore, the ceramic shell is a square shell, a square placing groove is formed in the ceramic shell, and the light source refraction ceramic support is fixedly arranged in the placing groove;

light guide holes with the same direction as the corresponding broken line channels are formed in the side walls of the two sides of the ceramic shell corresponding to the light outlet, and the diameter of each light guide hole is 1.1-1.5 times that of the light outlet;

a light inlet hole with the same direction as the corresponding broken line channel is formed in the side wall of the ceramic shell corresponding to the light inlet, and the diameter of the light inlet hole is 0.15-0.4 times of that of the light inlet;

a coaming is integrally formed on the periphery of the upper end of the placing groove, and a ceramic cover plate is placed on the upper end face of the placing groove in the coaming.

As a general inventive concept, the present invention provides a processing method of a ceramic inner package housing system of an optical fiber multi-path connector, comprising the following steps:

1) Blank preparation: preparing an alumina ceramic material; the raw material of the alumina ceramic material contains a heterogeneous core-shell structure toughening agent;

the heterogeneous core-shell structure toughening agent is prepared by the following method:

(1) preparing rare earth metal nitrate, deionized water and absolute ethyl alcohol into a rare earth cation mixed solution with the mass concentration of 20-30%; the mass ratio of the deionized water to the absolute ethyl alcohol is 1:1-1.5;

the rare earth metal nitrate is a mixture of yttrium nitrate, cerium nitrate and lanthanum nitrate; the molar ratio of yttrium nitrate to cerium nitrate to lanthanum nitrate is 1:0.2-0.3:0.5-0.8;

(2) pouring nano alumina powder with the average particle size of 30-80nm into the rare earth cation mixed solution, wherein the mass ratio of the nano alumina powder to the rare earth cation mixed solution is 1:0.3-0.5; after being fully mixed, the mixture is ball-milled, and then the obtained suspension is dried in a vacuum oven to remove water and ethanol;

(3) grinding and refining the dried powder, sieving with a 200-mesh sieve, and calcining in a muffle furnace at 780-810 ℃ for 1-1.5h to obtain a heterogeneous core-shell structure toughening agent;

2) And (5) precision grinding.

The invention adopts a plurality of rare earth ions to coat the surface of the nano-alumina powder in the form of nitrate through a liquid phase way, thereby obtaining the multi-element rare earth oxide coating powder (heterogeneous core-shell structure toughening agent), and the preparation method is simple and easy to operate. By constructing the core-shell structure, when the toughening agent is used for preparing the alumina ceramic material, the contact area of the rare earth element and the alumina ceramic is increased, the component reaction of the alumina and the sintering aid can be better promoted, the generated eutectic is filled in gaps, and the compactness of the ceramic is improved. In addition, during high-temperature calcination, the rare earth alumina ceramic core-shell toughening agent is coated on the surface of alumina crystal grains at 360 degrees, and each rare earth oxide in the toughening agent is matched with nano alumina, so that the deformation and growth of the crystal grains can be effectively inhibited, the internal alumina ceramic structure is more compact, and the toughening effect is good. Compared with the direct addition of rare earth and nano oxide, the method is more favorable for forming an intermediate phase, inhibiting the growth of ceramic grains and improving the strength and toughness of the ceramic.

Further, the processing technology comprises the following steps:

1) Blank manufacturing:

(1) weighing the following raw materials in percentage by mass: 12-12.8% of white wax, 0.08-0.15% of beeswax and the balance of powder;

the powder material is prepared by mixing the following raw materials in percentage by weight: 2-2.5% of heterogeneous core-shell structure toughening agent, 0.01-0.03% of kaolin, 0.015-0.025% of silicon dioxide, 0.03-0.05% of calcium carbonate, 4-5.5% of oleic acid and the balance of alumina;

(2) ball milling treatment: loading the powder into an aluminum tray, and baking in an oven at 150-160 ℃ for 10-15 hours; putting the mixture into a ball mill, and performing ball milling for 16 to 20 hours;

(3) making a wax cake: putting white wax, beeswax and the powder obtained by the treatment in the step (2) into a stirring barrel, heating to 100 ℃, stirring for 2 hours, discharging, sieving by a 50-mesh sample sieve, loading in a stainless steel plate, cooling, and taking out the plate to obtain a wax cake;

(4) molding treatment: melting and stirring wax cake at 70-90 deg.C, feeding into hot press forming machine, placing specific metal mold at the casting and pressing part of the machine for forming, with air pressure of 5.5-6.5KG and heating port temperature of 58-76 deg.C; cooling and demoulding to obtain a ceramic blank;

(5) and (3) sintering: placing the ceramic blank into a single-hole push rod kiln, heating to 300-400 ℃, and sintering for 30-50 minutes; then the temperature is increased to 1620 ℃ to 1628 ℃, and sintering is carried out for 20 minutes to 25 minutes; cooling and discharging from the kiln to obtain an alumina ceramic material;

2) Precision grinding processing: and processing the alumina ceramic material, and grinding the alumina ceramic material to a qualified size to obtain the ceramic component.

Further, the processing technology comprises the following steps:

1) Blank manufacturing:

(1) weighing the following raw materials in percentage by mass: 1.8-2.3% of heterogeneous core-shell structure toughening agent, 0.95-1.05% of silicon oxide, 2.8-3.0% of calcium carbonate, 1.12-1.17% of Suzhou soil, 4-4.3% of zirconium dioxide, 0.03-0.08% of titanium dioxide, 0.01-0.03% of manganese dioxide and the balance of aluminum oxide;

(2) ball milling treatment: putting the weighed raw materials into an aluminum tray, and baking in an oven at 150-160 ℃ for 8-10 hours; putting the mixture into a ball mill, and performing ball milling for 20-24 hours to obtain mixed powder;

(3) pre-burning: heating the mixed powder to 1200-1260 ℃, presintering for 1.5-2 hours, cooling to room temperature along with the furnace, crushing, ball-milling, sieving by a 50-mesh sample sieve, and drying to obtain presintering powder;

(4) and (3) sintering: dry pressing the pre-sintered powder, and sintering at high temperature to obtain an alumina ceramic material;

2) Precision grinding: and (3) processing the alumina ceramic material, and grinding the alumina ceramic material to a qualified size to obtain the ceramic component.

Compared with the prior art, the invention has the following beneficial effects:

1. the optical fiber multi-path connector of the ceramic inner packaging shell system has less signal attenuation, laser in a single-mode optical fiber enters the connector from an inlet end, and non-permanent multi-path end face precise connection among equipment, equipment and instruments, equipment and optical fibers in the system can be realized through linear transmission of light and reflection transmission of prisms, so that light energy output by the transmitting optical fiber is coupled into the receiving optical fiber to the maximum extent (the signal attenuation is less than or equal to 1.2 dB/km).

2. The ceramic inner packaging shell system of the optical fiber multi-path connector is mainly used for realizing the connection of optical fibers, and can ensure the transmission of light beams and reduce disordered signals in the refraction process by reasonably limiting the included angle of the broken line channel and the diameter of the circular through opening, thereby effectively improving the transmission quality of the optical fibers. The ceramic inner packaging shell system is convenient to install, small in overall size and low in production cost.

3. The manufacturing process of the invention comprises blank manufacturing and precision grinding processing. The heterogeneous core-shell structure toughening agent, alumina, kaolin, silicon dioxide, calcium carbonate, oleic acid, white wax and beeswax are used for preparing alumina ceramics, and the heterogeneous core-shell structure toughening agent, the alumina, the silicon oxide, the calcium carbonate, suzhou soil, the zirconia and the like are used for preparing the alumina ceramics, all the raw materials are matched with each other, and the alumina ceramics are respectively combined with a corresponding optimized preparation method, so that the prepared alumina ceramics have good toughness, high strength and good high temperature resistance, and are not easy to crack during processing, therefore, when the alumina ceramics are used for processing products, the product yield can be greatly improved, the production cost of enterprises can be greatly reduced, the processing precision of the products can reach submicron level, the rigidity is good, and the overall precision is high (the form and position dimensional tolerance is controlled between 0.02 and 0.05 mm), and the light attenuation can be favorably reduced.

4. The light source refraction ceramic bracket can realize the maximum utilization of wavelength division multiplexing, independent light beams are copied through multi-branch transmission of the incident light signals, and the light beams are not influenced mutually, so that the light attenuation is effectively reduced by processing corresponding ceramic parts by adopting the prepared alumina ceramic material, and the transmission efficiency is improved by 2-5%.

5. The optical fiber multi-path connector adopting the ceramic inner packaging shell system can replace a metal connector and is an indispensable passive device. The corresponding optical fiber ceramic multi-path connector has long transmission distance, and single-mode optical fibers can support the transmission distance of more than 5000m in 100Mbps Ethernet or 1G gigabit network; the service life is long. The service life of the traditional metal connector is generally not more than 20 years, and the service life of the optical fiber ceramic multi-path connector adopting the ceramic inner packaging shell system can reach 50-80 years.

6. The ceramic inner packaging shell system of the optical fiber multi-path connector has good market development prospect, and can innovate the traditional production technology and expand the application field of ceramic materials; promote the industry to upgrade and promote the technical development; has good economic benefit and social benefit.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic perspective view of a ceramic inner packaging shell assembled with a light source refraction ceramic support;

FIG. 2 is a schematic perspective view of FIG. 1 from another angle;

FIG. 3 is a schematic perspective view of a light source refracting ceramic mount;

FIG. 4 is a schematic perspective view of a ceramic holder;

FIG. 5 is a front view of a ceramic holder;

FIG. 6 is a rear view of the ceramic mount;

FIG. 7 is a perspective view of the lower bracket;

FIG. 8 is a perspective view of the upper bracket;

FIG. 9 is a top view of the lower bracket;

FIG. 10 is a schematic perspective view of the assembled film protective groove and refractive prism film;

FIG. 11 is a schematic perspective view of a ceramic inner packaging shell;

FIG. 12 is a right side view of the ceramic inner package shell;

FIG. 13 is a left side view of the ceramic inner package shell;

FIG. 14 is a top view of the ceramic inner package housing system after application of the ceramic cover plate;

FIG. 15 is an external schematic of beam propagation for the ceramic package-in-ceramic housing system of the present invention;

FIG. 16 is a schematic view of the beam propagation internal of the ceramic package-in-ceramic housing system of the present invention;

illustration of the drawings:

1. a ceramic housing; 11. a placement groove; 12. a light guide hole; 13. a light inlet hole; 14. enclosing plates; 15. a ceramic cover plate; 2. a light source refracting ceramic mount; 21. a ceramic support; 211. an upper bracket; 212. a lower bracket; 22. a refractive prism film; 23. a broken line channel; 24. a folding groove; 25. a circular through opening; 251. a light inlet; 252. a light outlet; 26. a limiting hole; 27. a limiting column; 28. a membrane protective slot; 29. and a vertical through hole.

Detailed Description

In order to facilitate understanding of the invention, the invention will be described more fully and in detail with reference to the accompanying drawings and preferred embodiments, but the scope of the invention is not limited to the specific embodiments below.

Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention.

Unless otherwise specifically stated, various raw materials, reagents, instruments, equipment and the like used in the present invention are commercially available or can be prepared by existing methods.

Example 1:

as shown in fig. 1 to 14, the ceramic inner package housing system of the optical fiber multi-path connector in the present embodiment includes a ceramic housing 1, a light source refraction ceramic support 2; the light source refracting ceramic mount 2 is disposed inside the ceramic housing 1.

In this embodiment, the light source refraction ceramic support 2 includes a ceramic support 21 and a refraction prism diaphragm 22, the ceramic support 21 is a square structure, a broken line channel 23 extending along the length direction (along the left-right direction) of the ceramic support 21 is formed in the ceramic support 21, and the broken line channel 23 is composed of a plurality of sections of linear channels connected end to end in sequence; the starting point, the end point and the corner of the broken line channel 23 are communicated with the corresponding side wall of the ceramic bracket 21, and a plurality of circular through openings 25 are formed on the side wall; the circular through opening 25 corresponding to the starting point of the broken line channel 23 is a light inlet 251, and the other circular through openings 25 are light outlets 252; the refraction prism film 22 is disposed at the light outlet 252. The refractive prism film 22 completely covers the light exit 252.

In this embodiment, the side walls of the two sides of the ceramic support 21 are provided with N light outlets 252, N is a positive integer, and N is greater than or equal to 3 and less than or equal to 7. Specifically, the side walls of the two sides of the ceramic support 21 may be respectively provided with 5 light outlets 252.

The circular through holes 25 positioned on the same side of the ceramic support 21 are arranged at equal intervals; each circular through-hole 25 has an overlapping region with the circular through-hole 25 on the other side opposite thereto in the width direction (front-rear direction) of the ceramic holder 21.

In this embodiment, each linear passage in the polygonal-line passage 23 has the same axis as the circular through openings 25 corresponding to the two ends of the linear passage, the included angle of the polygonal-line passage 23 is 25 to 30 degrees, the diameter of the circular through opening 25 is 1.1 to 1.7mm, and the width of the ceramic support 21 is 4 to 6.5mm.

It is further preferred that the angle of the polygonal channel 23 is 27 deg., where the angle of refraction of the beam as it propagates is around 13.5 deg., and the diameter of the circular opening 25 is no greater than 1.5mm. Through the contained angle of reasonable limited broken line passageway 23 and the diameter of circular opening 25, at the refraction in-process, can guarantee the propagation of light beam, can make mixed and disorderly signal less again, effectively promote the quality of optical fiber transmission.

In this embodiment, the ceramic support 21 includes an upper support 211 and a lower support 212 that are symmetrically arranged up and down, and both the upper support 211 and the lower support 212 are of a square structure;

symmetrical broken line grooves 24 are formed in the opposite surfaces of the upper support 211 and the lower support 212, the starting point, the ending point and the corner of each broken line groove 24 are communicated with the corresponding side walls of the upper support 211 and the lower support 212, and semicircular gaps are formed in the side walls; the upper and lower folding line grooves 24 are spliced into a folding line channel 23, and the two semicircular notches which are opposite from each other up and down are spliced into a circular through hole 25.

The ceramic support 21 is divided into the upper support 211 and the lower support 212, the ceramic support 21 can be obtained by combining the upper support 211 and the lower support 212, the assembly is convenient, the processing of the ceramic support 21 can be facilitated, and the processing precision is ensured. In this embodiment, the lower bracket 212 has a limiting hole 26 formed on an upper end surface thereof, a limiting post 27 matching with the limiting hole 26 is fixed on a lower end surface of the upper bracket 211 corresponding to the limiting hole 26, and the limiting post 27 is located in the limiting hole 26 and is in contact connection with the limiting hole 26. The positioning and splicing of the upper bracket 211 and the lower bracket 212 and the subsequent fixing can be facilitated by arranging the limiting holes 26 and the limiting columns 27. The upper support 211 corresponding to one section of linear groove at the tail end of the folding groove 24 is provided with a vertical through hole 29, and the vertical through hole 29 is favorable for observing and measuring the quality of light beams.

In this embodiment, the plurality of refraction prism diaphragms 22 on the same side of the ceramic support 21 are jointly fixed by one diaphragm protection groove 28, and the diaphragm protection groove 28 corresponding to the refraction prism diaphragm 22 is provided with a mounting hole; the refraction prism diaphragm 22 is fixed in the mounting hole, and the diaphragm protection groove 28 is fixedly connected with the side wall of the ceramic support 21.

In this embodiment, the ceramic shell 1 is a square shell, and a square placing groove 11 is arranged in the ceramic shell 1; the light source refraction ceramic support 2 is fixedly arranged in the placing groove 11 (can be bonded and fixed through an adhesive). Light guide holes 12 with the same direction as the corresponding broken line channel 23 (corresponding to the straight line channel in the broken line channel 23) are formed in the side walls of the two sides of the ceramic shell 1 corresponding to the light outlet 252; the diameter of the light guide hole 12 is 1.1-1.5 times of the diameter of the light outlet 252.

A light inlet 13 with the same direction as the corresponding broken line channel 23 (corresponding to a straight line channel in the broken line channel 23) is formed on the side wall of the ceramic shell 1 corresponding to the light inlet 251; the diameter of the light inlet 13 is 0.15-0.4 times of the diameter of the light inlet 251; the ceramic shell 1 corresponding to the middle of the upper end of each light guide hole 12 may be provided with a vertical perforation (not shown in the figure), and the arrangement of the vertical perforation is favorable for observing and measuring the quality of each received light beam.

In this embodiment, a surrounding plate 14 is integrally formed around the upper end of the placement groove 11, a ceramic cover plate 15 is placed on the upper end face of the placement groove 11 in the surrounding plate 14, and the ceramic cover plate 15 is in contact with four end side walls of the surrounding plate 14 in general. The ceramic cover plate 15 may be adhesively fixed to the upper end surface of the placing groove 11 by an adhesive.

In the ceramic inner package housing system of the optical fiber multi-way connector in this embodiment, a plurality of transmitted optical signals are guided into the ceramic support 21 through the light inlet 13 and the light inlet 251 in sequence (as shown in fig. 15 and fig. 16), the optical signals propagate in the broken line channel 23, and the optical energy output by the transmitting optical fiber is coupled to the receiving optical fiber to the maximum extent through the linear propagation of the light and the reflection propagation of the prism, and the ceramic inner package housing system of the optical fiber multi-way connector is applied to the optical fiber multi-way connector, and the signal attenuation is less than or equal to 1.2dB/km.

The light source refraction ceramic support 2 (the corresponding ceramic part is processed by the process in the embodiment 2-3) in the embodiment can realize the maximum utilization of wavelength division multiplexing, and the incident light signals are transmitted in multiple branches, independent light beams are copied, light beams are not affected mutually, light attenuation is effectively reduced, and the transmission efficiency is improved by 2% -5%.

The optical fiber ceramic multi-path connector adopting the ceramic inner packaging shell system has long transmission distance, and single-mode optical fibers can support the transmission distance of more than 5000m in 100Mbps Ethernet or 1G gigabit network; the service life is long and can reach 50-80 years.

Example 2:

for the ceramic part in example 1: the ceramic shell 1, the ceramic support 21 (including the upper support 211 and the lower support 212), the ceramic cover plate 16 and the diaphragm protection groove 28 are processed by the following processes:

1) Blank manufacturing:

(1) weighing the following raw materials in percentage by mass: 12.4% of white wax, 0.1% of beeswax and the balance of powder;

the powder material is prepared by mixing the following raw materials in percentage by weight: 2% of heterogeneous core-shell structure toughening agent, 0.02% of kaolin, 0.018% of silicon dioxide, 0.035% of calcium carbonate, 5% of oleic acid and the balance of aluminum oxide.

The preparation method of the heterogeneous core-shell structure toughening agent comprises the following steps:

a. preparing rare earth metal nitrate, deionized water and absolute ethyl alcohol into a rare earth cation mixed solution with the mass concentration of 25%; the mass ratio of the deionized water to the absolute ethyl alcohol is 1:1.

the rare earth metal nitrate is a mixture of yttrium nitrate, cerium nitrate and lanthanum nitrate; the molar ratio of yttrium nitrate, cerium nitrate and lanthanum nitrate is 1:0.3:0.6.

b. pouring nano alumina powder with the average particle size of 50nm into the rare earth cation mixed solution, wherein the mass ratio of the nano alumina powder to the rare earth cation mixed solution is 1:0.5; fully mixing and then ball-milling for 1.5 hours; the suspension obtained was then dried in a vacuum oven at 75 ℃ for 24h to remove water and ethanol.

c. And grinding and refining the powder obtained after drying, sieving the powder with a 200-mesh sieve, and calcining the powder for 1 hour in a muffle furnace at 800 ℃ to obtain the heterogeneous core-shell structure toughening agent.

(2) Ball milling treatment: putting the powder into an aluminum plate, and baking in an oven for 10 hours at the baking temperature of 150 ℃; putting the mixture into a ball mill and performing ball milling for 18 hours.

(3) Making a wax cake: and (3) putting the white wax, the beeswax and the powder obtained by the treatment in the step (2) into a stirring barrel, heating to 100 ℃, stirring for 2 hours, discharging, sieving by using a 50-mesh sample sieve, filling in a stainless steel plate, cooling, and taking out the plate to obtain the wax cake.

(4) Molding treatment: melting and stirring the wax cake at 80 ℃, then sending the wax cake to a hot-pressing forming machine, and placing a specific metal mold at the casting and pressing part of the machine for forming, wherein the air pressure is 6KG, and the temperature of a feed inlet is 70 ℃; and (5) cooling and demoulding to obtain the ceramic blank.

(5) And (3) sintering: placing the ceramic blank into a single-hole push rod kiln, heating to 350 ℃, and sintering for 45 minutes; then the temperature is increased to 1628 ℃, and sintering is carried out for 20 minutes; cooling and discharging from the kiln to obtain the alumina ceramic material.

2) Precision grinding processing: and (3) processing the alumina ceramic material, and grinding the alumina ceramic material to a qualified size to obtain the corresponding ceramic component.

The ceramic shell 1 is prepared by adopting the processing technology, and the product yield is more than 98%; preparing a monolithic ceramic support 21, wherein the yield of the product is more than 96%; preparing an upper bracket 211 and a lower bracket 212, wherein the yield of the product is more than 98%; the ceramic cover plate 15 is prepared, and the yield of products is over 99 percent; the film protective groove 28 is prepared, and the product yield is more than 98%.

Example 3:

1) Blank preparation:

(1) weighing the following raw materials in percentage by mass: 2.3 percent of heterogeneous core-shell structure toughening agent (the preparation method is the same as the example 2), 1.05 percent of silicon dioxide, 3.0 percent of calcium carbonate, 1.15 percent of Suzhou clay, 4.3 percent of zirconium dioxide, 0.05 percent of titanium dioxide, 0.02 percent of manganese dioxide and the balance of aluminum oxide.

(2) Ball milling treatment: putting the weighed raw materials into an aluminum plate, and baking in an oven for 8 hours at 160 ℃; putting the mixture into a ball mill, and performing ball milling for 20 hours to obtain mixed powder;

(3) pre-burning: heating the mixed powder to 1260 ℃, presintering for 2 hours, cooling to room temperature along with the furnace, crushing, ball-milling, sieving by a 50-mesh sample sieve, and drying to obtain presintering powder;

(4) and (3) sintering: and (3) dry-pressing the pre-sintered powder, and sintering at 1580 ℃ for 70 minutes at high temperature to obtain the alumina ceramic material.

2) Precision grinding: and processing the alumina ceramic material, and grinding the alumina ceramic material to a qualified size to obtain the ceramic component.

The ceramic shell 1 is prepared by adopting the processing technology, and the product yield is more than 98%; preparing a whole ceramic bracket 21, wherein the yield of the product is more than 95%; preparing an upper bracket 211 and a lower bracket 212, wherein the product yield is over 97 percent; the ceramic cover plate 15 is prepared, and the yield of products is over 99 percent; the film protective groove 28 is prepared, and the product yield is more than 98%.

Claims

1. The ceramic inner packaging shell system of the optical fiber multi-path connector is characterized by comprising a ceramic shell (1) and a light source refraction ceramic support (2), wherein the light source refraction ceramic support (2) is arranged inside the ceramic shell (1);

the light source refraction ceramic support (2) comprises a ceramic support (21) and refraction prism diaphragms (22), the ceramic support (21) is of a square structure, a broken line channel (23) extending along the length direction of the ceramic support is formed in the ceramic support (21), the starting point, the end point and the corner of the broken line channel (23) are communicated with the corresponding side wall of the ceramic support (21), a plurality of circular through holes (25) are formed in the side wall, the circular through holes (25) corresponding to the starting point of the broken line channel (23) are light inlet holes (251), other circular through holes (25) are light outlet holes (252), and the refraction prism diaphragms (22) are arranged at the light outlet holes (252);

the side walls of two sides of the ceramic support (21) are respectively provided with N light outlets (252), N is a positive integer and is more than or equal to 3 and less than or equal to 7; the circular through openings (25) positioned on the same side of the ceramic support (21) are arranged at equal intervals, and each circular through opening (25) and the circular through opening (25) on the other opposite side have an overlapping area in the width direction of the ceramic support (21);

each section of linear channel in the broken line channel (23) and the circular through openings (25) corresponding to the two ends of the broken line channel have the same axis, and the included angle of the broken line channel (23) is 25-30 degrees; the diameter of the circular through opening (25) is 1.1-1.7mm, and the width of the ceramic support (21) is 4-6.5mm;

the light source refraction ceramic support is characterized in that the ceramic shell (1) is a square shell, a square placing groove (11) is formed in the ceramic shell (1), and the light source refraction ceramic support (2) is fixedly installed in the placing groove (11);

light guide holes (12) with the same direction as the corresponding broken line channel (23) are formed in the side walls of the two sides of the ceramic shell (1) corresponding to the light outlet (252), and the diameter of each light guide hole (12) is 1.1-1.5 times that of the light outlet (252);

the side wall of the ceramic shell (1) corresponding to the light inlet (251) is provided with a light inlet (13) with the direction consistent with that of the corresponding broken line channel (23), and the diameter of the light inlet (13) is 0.15-0.4 times that of the light inlet (251);

a coaming (14) is integrally formed around the upper end of the placing groove (11), and a ceramic cover plate (15) is placed on the upper end face of the placing groove (11) in the coaming (14);

and the ceramic component in the system is prepared by adopting a processing technology comprising the following steps:

1) Blank manufacturing:

(2) ball milling treatment: putting the powder into an aluminum plate, and baking in an oven at 150-160 ℃ for 10-15 hours; putting the mixture into a ball mill, and carrying out ball milling for 16-20 hours;

2) Precision grinding: processing the alumina ceramic material, and grinding the alumina ceramic material to a qualified size to obtain a ceramic part;

(1) preparing rare earth metal nitrate, deionized water and absolute ethyl alcohol into rare earth cation mixed solution with the mass concentration of 20-30%; the mass ratio of the deionized water to the absolute ethyl alcohol is 1:1-1.5;

(3) grinding and refining the dried powder, sieving with a 200-mesh sieve, and calcining in a muffle furnace at 780-810 ℃ for 1-1.5h to obtain the heterogeneous core-shell structure toughening agent.

2. The ceramic inner package shell system of the optical fiber multi-path connector according to claim 1, wherein the ceramic support (21) comprises an upper support (211) and a lower support (212) which are arranged up and down symmetrically, and the upper support (211) and the lower support (212) are of a square structure;

symmetrical fold line grooves (24) are formed in the opposite surfaces of the upper support (211) and the lower support (212), the starting point, the end point and the corner of each fold line groove (24) are communicated with the corresponding side walls of the upper support (211) and the lower support (212), semicircular notches are formed in the side walls, the upper fold line groove (24) and the lower fold line groove (24) are spliced into a fold line channel (23), and the upper semicircular notch and the lower semicircular notch are spliced into a circular through hole (25);

spacing hole (26) have been seted up to lower carriage (212) upper end face, upper bracket (211) lower end face that spacing hole (26) correspond is fixed with spacing post (27) with spacing hole (26) assorted, spacing post (27) are located spacing hole (26) and are connected with spacing hole (26) contact.

3. The ceramic inner package housing system of the fiber-optic multi-path connector according to claim 1, wherein a plurality of the refractive prism diaphragms (22) on the same side of the ceramic support (21) are jointly fixed by a diaphragm protection groove (28), the corresponding diaphragm protection groove (28) of the refractive prism diaphragm (22) is provided with a mounting hole, the refractive prism diaphragm (22) is fixed in the mounting hole, and the diaphragm protection groove (28) is fixedly connected with the side wall of the ceramic support (21).

4. The ceramic inner package housing system of the fiber optic multiplex connector according to claim 1, wherein said processing comprises the steps of: 1) Blank preparation:

(2) ball milling treatment: putting the weighed raw materials into an aluminum plate, and baking in an oven for 8-10 hours at the baking temperature of 150-160 ℃; putting the mixture into a ball mill, and performing ball milling for 20-24 hours to obtain mixed powder;