CN116355537A - Optical fiber polishing liquid, preparation method and optical fiber polishing process - Google Patents

Abstract

The invention relates to an optical fiber polishing liquid, a preparation method and an optical fiber polishing process, belonging to the technical field of optical fiber processing. Optical fiber polishing slurry includes nano cerium oxide powder, purified water, hydrophilic dispersant, water-soluble suspending agent, glycol monomer moisturizer; wherein, the weight of nano cerium oxide powder, purified water, glycol monomer moisturizer The ratio is (2-4): (4-8): (1-3), the dispersant is 3%-15% of the weight of purified water, the suspending agent is 5%-10% of the weight of purified water; nano cerium oxide powder The particle size range is 0.2um≤α≤0.7um. Through the polishing liquid, the fiber polishing effect and optical performance can be made good. In addition, the particle size range of nano-cerium oxide powder is set to 0.2um≤α≤0.7um, and the dosage of purified water, hydrophilic dispersant, water-soluble suspending agent, and glycol monomer humectant is adjusted based on the particle size range. Adjustments can be made to achieve the desired fiber polishing results while reducing costs.

Description

Optical fiber polishing liquid, preparation method and optical fiber polishing process

technical field

The invention belongs to the technical field of optical fiber processing, and in particular relates to an optical fiber polishing liquid, a preparation method and an optical fiber polishing process.

Background technique

Optical fiber communication uses optical fiber as the transmission medium and optical signal as the information carrier. The three pillars of modern communication network are optical fiber communication, satellite communication and radio communication, among which optical fiber communication is the main body. Optical fiber plays an irreplaceable role in the infrastructure construction of the information highway.

Optical fiber communication mainly communicates through optical fiber lines. The optical fiber line is composed of optical fiber, optical fiber joints and optical fiber connectors. The function of the optical fiber line is to transmit the optical signal from the optical transmitter to the optical receiver with as little distortion and attenuation as possible. . Optical fiber connectors, commonly known as live joints, are mainly used to realize non-permanent fixed connections between equipment, between equipment and instruments, between equipment and optical fibers, and between optical fibers and optical fibers in the system. It is necessary for the connection of various devices in optical fiber communication systems. It is also the most widely used optical fiber device at present. Optical fiber connectors include FC, SC, ST, LC, D4, DIN, MU, MT and other connectors

At present, the insertion loss of the MT active fiber optic connector can reach less than 0.2dB, and the multimode return loss can also reach more than 40dB (PC side) and 65dB (APC side). However, since the optical fiber is a hard and brittle material, the elastic limit of this type of material is very close to the theoretical value of the strength limit. During machining, when the load is slightly higher than the elastic limit, it will break and damage, resulting in cracks on the processed surface. Chipping and pitting, affecting the surface quality and optical properties of the material. Therefore, the processing quality of MT connectors is difficult to control, which seriously affects product performance and production costs. However, MT connectors require nano-scale ultra-smooth processing surfaces and good material properties in high-end applications. The optical fiber core is easy to sag after the polishing process, and there is a gap when the connector is physically docked, which increases the return loss of the product.

Therefore, it is necessary to provide an optical fiber polishing slurry, a preparation method and an optical fiber polishing process to overcome the above problems.

Contents of the invention

The object of the present invention is to provide an optical fiber polishing liquid, a preparation method and an optical fiber polishing process, so as to improve the optical performance of optical fiber end surface polishing and grinding of optical fiber connectors.

In order to achieve the above object, the first aspect of the present invention provides an optical fiber polishing slurry, including nano cerium oxide powder, purified water, hydrophilic dispersant, water-soluble suspending agent, glycol monomer humectant;

Wherein, the weight ratio of the nano cerium oxide powder, the purified water, and the glycol monomer humectant is (2-4): (4-8): (1-3), and the dispersant is the 3%-15% of the weight of the purified water, and the suspending agent is 5%-10% of the weight of the purified water;

The particle size range of the nano cerium oxide powder is 0.2um≤α≤0.7um.

In some embodiments, the particle size range of the nano-cerium oxide powder is 0.3um≤α≤0.5um.

In some embodiments, the dispersant includes a modified polyether phosphate compound containing a hydrophilic group.

In some embodiments, the dispersant is Guangzhou Runhong Chemical Co., Ltd. model 8605 dispersant.

In some embodiments, the suspending agent includes water-soluble liquid polymers, emulsifiers, water-soluble cellulose.

In some embodiments, it is characterized in that: the glycol monomer humectant includes ethylene glycol.

A second aspect of the present invention provides a method for preparing an optical fiber polishing slurry, comprising the following steps:

Step 1, the weight ratio is weighed as follows: 20-40 parts by weight of nano cerium oxide powder, 40-80 parts by weight of purified water, 10-30 parts by weight of glycol monomer humectant, and the dispersant is 3 parts by weight of the purified water. %-15%, suspending agent is 5%-10% of described purified water weight, stand-by;

Step 2, adding the purified water into the mixing tank and stirring at a low speed;

Step 3, adding the dispersant into the purified water and stirring at a low speed for 3-8 minutes;

Step 4, adding the nano cerium oxide powder into the purified water and stirring at a medium speed for 8-12 minutes;

Step 5, adding the suspending agent into the purified water and stirring at a medium speed for 12-18 minutes;

Step 6. Add the glycol monomer humectant into the purified water and stir at medium speed for 8-12 minutes;

Step 7: Complete the packaging and storage of the proportioning.

In some embodiments, in the third step, the dispersant is stirred at a low speed for 5 minutes;

In the step 4, the nano cerium oxide powder was stirred at a medium speed for 10 minutes;

In the step five, the suspending agent was stirred at a medium speed for 15 minutes;

In the sixth step, the diol monomer humectant was stirred at a medium speed for 10 minutes.

The third aspect of the present invention provides an optical fiber polishing and grinding process, using the above preparation method to prepare the above optical fiber polishing slurry to polish and grind the optical fiber;

During the grinding process, the grinding pressure is 2000-3000 grams, the grinding speed is 120-180r/s, and the grinding time is 20-40s.

In some embodiments, the grinding pressure is 2500 grams, the grinding speed is 150 r/s, and the grinding time is 30s.

Beneficial effects of the present invention:

In the scheme of the present invention, the particle size α of the nano-cerium oxide powder is less than or equal to 0.7um, which can make the particle size of the cerium oxide powder smaller, which is conducive to reducing the degree of coagulation of the nano-cerium oxide powder and reducing the impact force on the end face of the optical fiber, and improving the polishing and grinding accuracy. In addition, the particle size α of the nano-cerium oxide powder is greater than or equal to 0.2um, so that the particle size of the nano-cerium oxide powder will not be too small, ensuring a certain polishing and grinding force, and making the grinding efficiency higher. When the nano-cerium oxide powder is too small, it is easy to change its properties, which will lead to unpredictable reactions between other additives in the grinding liquid and the nano-cerium oxide powder during the grinding process, which will affect the grinding effect of the grinding liquid and increase the difficulty of developing the grinding liquid. In addition, too small particles will affect the grinding rate, it will take longer time to affect the production efficiency, and too small particles will lead to an increase in the cost of nano cerium oxide powder. Moreover, the nano cerium oxide powder with a size of 0.2um≤α≤0.7um can be provided by domestic manufacturers to reduce costs.

The dispersant is beneficial to disperse the nano cerium oxide powder evenly in the grinding liquid; the function of the suspending agent is to evenly disperse the nano cerium oxide particles in the water to maintain a suspended state so that they will not sink rapidly, thereby maintaining the concentration of the grinding liquid so that the nano cerium oxide particles Uniformly dispersed in the grinding liquid; usually the dispersant and suspending agent are easy to oxidize, and the original dispersion and suspension effect will be lost or reduced after oxidation, resulting in the aggregation of nano-cerium oxide particles in the prepared polishing liquid to form large particles or Poor suspension directly affects the polishing and grinding effect, resulting in a high fiber optic height. In this case, by configuring a glycol monomer humectant, it can prevent moisture from evaporating, absorbing moisture, and reduce and delay the loss of dispersant and suspending agent when polishing the fiber. Oxidation, so that during the grinding process, the grinding liquid can maintain a good grinding effect.

In addition, the weight ratio of nano cerium oxide powder to the diol monomer humectant is (2-4): (4-8), which is conducive to having a higher concentration of nano cerium oxide powder in water and achieving good grinding of optical fibers Effect; the dispersant is 3%-15% of the weight of the purified water, which is conducive to dispersing the nano cerium oxide powder with a higher concentration, thereby better evenly dispersing the nano cerium oxide powder in the grinding liquid; the suspension The agent is 5%-10% of the weight of the purified water, which is conducive to uniformly dispersing the higher concentration of nano-cerium oxide particles in water to maintain a suspended state so that it will not sink rapidly, thereby maintaining a relatively high concentration of nano-cerium oxide particles in the grinding liquid. High and evenly dispersed in the grinding liquid; the weight ratio of the purified water and the glycol monomer humectant is (4-8): (1-3), which is beneficial for the glycol monomer humectant to have a larger Content, in order to better prevent water evaporation and moisture absorption, reduce and delay the oxidation of dispersants and suspending agents, so that during the grinding process, the grinding liquid can maintain a good grinding effect.

Based on the above, during the polishing process, the force on the end face of the optical fiber is relatively uniform and the impact force is relatively small, so that the polishing effect of the optical fiber is good, so that it has good optical performance. In addition, based on cost considerations, the particle size range of nano cerium oxide powder is set to 0.2um≤α≤0.7um, and the dosage of purified water, hydrophilic dispersant, water-soluble suspending agent, and glycol monomer humectant is based on this The particle size range is adapted to achieve the desired optical fiber polishing effect while reducing costs.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

In the prior art, the particle size of the cerium oxide powder used in optical fiber polishing liquid is 0.8-1.5um. Larger, in this case, the fiber end face is prone to large force and uneven force, which leads to the fiber core is easy to sag after grinding, and there is a gap when the connector is physically docked, which increases the return loss of the product.

Based on the above problems, the present invention provides a kind of optical fiber polishing slurry, comprising nano cerium oxide powder, purified water, hydrophilic dispersant, water-soluble suspending agent, glycol monomer humectant; wherein, nano cerium oxide powder, The weight ratio of purified water and glycol monomer humectant is (2-4): (4-8): (1-3), the dispersant is 3%-15% of the purified water weight, and the suspending agent is the purified water weight 5%-10%; the particle size range of nano cerium oxide powder is 0.2um≤α≤0.7um.

Among them, the particle size range of nano cerium oxide powder is 0.2um≤α≤0.7um, which means the particle size range of the maximum particle size of nano cerium oxide powder, and most of the particle size of nano cerium oxide powder is controlled to be 0.2um≤α≤0.7um, for example, 50 The particle size of the nano cerium oxide powder is controlled to be 0.2um≤α≤0.7um. Of course, according to the choice, the particle size of the nano cerium oxide powder can be controlled to be 0.2um≤α≤0.7um. The ratio is selected in a range greater than 50%, so that the particle size of most nano cerium oxide powders is controlled to be 0.2um≤α≤0.7um. The particle size α of nano cerium oxide powder is less than or equal to 0.7um, which can make the particle size of cerium oxide powder smaller, which is beneficial to reduce the degree of coagulation of nano cerium oxide powder and reduce the impact force on the end face of the optical fiber, and improve the polishing precision. In addition, nano cerium oxide powder The particle size α of the powder is greater than or equal to 0.2um, so that the particle size of the nano-cerium oxide powder will not be too small, ensuring a certain polishing and grinding force, and making the grinding efficiency higher. When the nano-cerium oxide powder is too small, it is easy to change its properties, which will lead to unpredictable reactions between other additives in the grinding liquid and the nano-cerium oxide powder during the grinding process, which will affect the grinding effect of the grinding liquid and increase the difficulty of developing the grinding liquid. In addition, too small particles will affect the grinding rate, it will take longer time to affect the production efficiency, and too small particles will lead to an increase in the cost of nano cerium oxide powder. Moreover, the nano cerium oxide powder with a size of 0.2um≤α≤0.7um can be provided by domestic manufacturers to reduce costs.

The dispersant is beneficial to disperse the nano cerium oxide powder evenly in the grinding liquid; the function of the suspending agent is to evenly disperse the nano cerium oxide particles in the water to maintain a suspended state so that they will not sink rapidly, thereby maintaining the concentration of the grinding liquid so that the nano cerium oxide particles Uniformly dispersed in the grinding liquid; usually the dispersant and suspending agent are easy to oxidize, and the original dispersion and suspension effect will be lost or reduced after oxidation, resulting in the aggregation of nano-cerium oxide particles in the prepared polishing liquid to form large particles or Poor suspension directly affects the polishing and grinding effect, resulting in a high fiber optic height. In this case, by configuring a glycol monomer humectant, it can prevent moisture from evaporating, absorbing moisture, and reduce and delay the loss of dispersant and suspending agent when polishing the fiber. Oxidation, so that during the grinding process, the grinding liquid can maintain a good grinding effect.

In addition, the weight ratio of nano cerium oxide powder to diol monomer humectant is (2-4): (4-8), which is conducive to having a higher concentration of nano cerium oxide powder in water and achieving a good grinding effect on optical fibers; The dispersant is 3%-15% of the weight of purified water, which is beneficial to disperse the nano cerium oxide powder with higher concentration, so that the nano cerium oxide powder can be evenly dispersed in the grinding liquid; the suspending agent is 5% of the weight of purified water -10%, it is beneficial to evenly disperse the nano-cerium oxide particles with higher concentration in water to maintain a suspended state so as not to sink rapidly, so as to maintain a high concentration of nano-cerium oxide particles in the grinding liquid and uniformly disperse in the grinding liquid; Purification The weight ratio of water and diol monomer humectant is (4-8): (1-3), which is beneficial for the dibasic alcohol monomer humectant to have a larger content, so as to better prevent moisture from evaporating so as to absorb moisture and keep moisture, reduce and Delay the oxidation of dispersant and suspending agent, so that the grinding liquid can maintain a good grinding effect during the grinding process.

The water is purified water, such as distilled water, deionized water, high-purity water, etc., to prevent more impurities in the water from affecting the uniformity of the nano-cerium oxide powder in the water and improve the grinding effect.

The hydrophilic dispersant is a modified polyether phosphate compound with hydrophilic groups, or other dispersants with hydrophilic groups, which are not limited here and can be set as required.

The water-soluble suspending agent includes at least one of water-soluble liquid polymers, water-soluble cellulose, etc., which is a prior art, and will not be described here one by one, wherein emulsifiers or dispersants can be added as needed.

Glycol monomer humectants include at least one of monomolecular moisturizing diols such as ethylene glycol and propylene glycol, which are not limited here, as long as they have hygroscopic and moisturizing effects, and can reduce and delay the oxidation of dispersants and suspending agents .

Based on the above, during the polishing process, the force on the end face of the optical fiber is relatively uniform and the impact force is relatively small, so that the polishing effect of the optical fiber is good, so that it has good optical performance. In addition, based on cost considerations, the particle size range of nano cerium oxide powder is set to 0.2um≤α≤0.7um, and the dosage of purified water, hydrophilic dispersant, water-soluble suspending agent, and glycol monomer humectant is based on this The particle size range is adapted to achieve the desired optical fiber polishing effect while reducing costs.

In some embodiments, the particle size range of the nano-cerium oxide powder is 0.3um≤α≤0.5um, which is beneficial to make the nano-cerium oxide powder smaller and more uniform in size, and the dispersant and suspending agent can more easily produce nano-cerium oxide particles. Function, so that the nano-cerium oxide particles can be more uniformly distributed in the water, so as to further have a better optical fiber grinding effect during the grinding process and improve the optical performance of the optical fiber connector.

In some embodiments, the dispersant includes a modified polyether phosphate compound containing a hydrophilic group, for example, the model of Guangzhou Runhong Chemical Co., Ltd. is 8605 dispersant. The use of modified polyether phosphate compounds containing hydrophilic groups can have good dispersion and adhesion. When the modified polyether phosphate compounds are dissolved in water, the adsorption drives nano-cerium oxide particles to disperse in water, making Nano cerium oxide particles are more evenly distributed in water. In addition, the modified polyether phosphate compounds have a certain degree of moisture retention, which makes the modified polyether phosphate compounds less oxidative, which is conducive to the uniform dispersion of nano cerium oxide particles. lasting.

In some embodiments, the suspending agent includes water-soluble liquid polymers, emulsifiers, water-soluble cellulose, etc., for example, the model of Qingdao Wanjia Huixin Surface Material Technology Co., Ltd. is M-205 suspending agent, to better integrate with nano-oxidation The cerium particles are combined, so that the nano-cerium oxide particles can be evenly dispersed in the water to maintain a suspended state so that they will not sink rapidly, and the suspension effect is better.

In some embodiments, the glycol monomer humectant includes ethylene glycol, which has a moisturizing effect, and ethylene glycol is easily soluble in water and has good dissolution and penetration, and can remove organic matter and The modified polyether phosphate compound is better dissolved and diffused, and has a stronger moisturizing effect on the suspending agent and dispersing agent. The uniform dispersion of nano-cerium oxide particles improves the optical fiber polishing effect. And, ethylene glycol is a neutral substance, which is weakly corrosive to the human body and is beneficial for operators to operate.

In some embodiments, the present invention also provides a method for preparing an optical fiber polishing slurry, comprising the following steps:

Step 1. Weigh 20-40 parts by weight of cerium oxide powder, 40-80 parts by weight of purified water, 10-30 parts by weight of glycol monomer humectant, the dispersant is 3%-15% of purified water, and the suspending agent is purified water Water 5%-10%, stand-by; step 2, add purified water to the mixing tank and stir at low speed; step 3, add dispersant to purified water and stir at low speed for 3-8 minutes; step 4, add nano-oxidized water to purified water Stir cerium powder at medium speed for 8-12 minutes; step 5, add suspending agent to purified water and stir at medium speed for 12-18 minutes; step 6, add glycol monomer humectant to purified water and stir at medium speed for 8-12 minutes ; Step 7, complete the packaging and warehousing of the proportioning.

Among them, the dispersant is stirred at a low speed for 3-8 minutes, which is conducive to the better dissolution of the dispersant in water; the dispersant is dissolved in water before the nano-cerium oxide powder, which is conducive to the dispersant to fully disperse the nano-cerium oxide evenly; Adding cerium powder to water is beneficial for the suspending agent to have a better suspending effect on the dispersed nano-cerium oxide; and adding the diol monomer humectant to the water after the suspending agent and dispersing agent is beneficial to reduce and delay the suspending agent and dispersion. agent oxidation; nano cerium oxide powder, suspending agent and glycol monomer humectant are stirred in purified water at a medium speed, which is conducive to accelerating the diffusion speed and fully mixing various materials.

In some embodiments, in step three, the dispersant is stirred at a low speed for 5 minutes; in step four, the nano cerium oxide powder is stirred at a medium speed for 10 minutes; in step five, the suspending agent is stirred at a medium speed for 15 minutes; in step six, the glycol Agitate the monomeric moisturizer at medium speed for 10 minutes.

In some embodiments, the present invention also provides an optical fiber polishing and grinding process, which uses the optical fiber polishing slurry prepared according to the above preparation method to polish and grind the optical fiber; during the grinding process, the grinding pressure is 2000-3000 grams, and the grinding speed The grinding time is 120-180r/s, and the grinding time is 20-40s, which is conducive to the good uniformity of nano-cerium oxide in the grinding liquid, so that it has a good grinding and polishing effect on the optical fiber.

Among them, the grinding machine used in the grinding process is Shengming MT central pressure grinding machine, Hanxin MT central pressure grinding machine or Poers MT central pressure grinding machine.

Preferably, the grinding pressure is 2500 grams, the grinding speed is 150 r/s, and the grinding time is 30 s, so as to have a better grinding effect.

The following is the embodiment of the preparation method of optical fiber polishing slurry and the optical fiber polishing and grinding process, as follows:

Example 1

Step 1, the parts by weight are weighed as follows: 20 parts by weight of nano-cerium oxide powder with a maximum particle size of 0.2um, 40 parts by weight of distilled water, 10 parts by weight of ethylene glycol, and the dispersant of Guangzhou Runhong Chemical Co., Ltd. model 8605 is distilled water 3% by weight, the suspending agent of Qingdao Wanjia Huixin Surface Material Technology Co., Ltd. model M-205 is 5% by weight of distilled water, stand-by;

Step 2: Add distilled water into the mixing tank and stir at low speed;

Step 3: Add dispersant to distilled water and stir at low speed for 3 minutes;

Step 4: Add nano cerium oxide powder into distilled water and stir for 8 minutes at medium speed;

Step 5. Add suspending agent to distilled water and stir at medium speed for 12 minutes;

Step 6: Add ethylene glycol to the distilled water and stir at medium speed for 8 minutes;

Step 7: Complete the packaging and storage of the proportioning.

Polishing and grinding for MT12-core multi-mode optical fiber connector products, take the configured MT optical fiber polishing slurry and place it on the grinding platform, drive the MT connector clamped by the grinding machine to contact the optical fiber polishing slurry on the grinding platform, and drive the grinding The platform turns.

During the grinding process, the grinding pressure is 2000g, the grinding speed is 120r/s, and the grinding time is 20s.

Example 2

Step 1, the parts by weight are weighed as follows: 40 parts by weight of nano-cerium oxide powder with a maximum particle size of 0.7um, 80 parts by weight of distilled water, 30 parts by weight of ethylene glycol, and the dispersant of Guangzhou Runhong Chemical Co., Ltd. model 8605 is distilled water 15% by weight, the suspending agent of Qingdao Wanjia Huixin Surface Material Technology Co., Ltd. model M-205 is 10% by weight of distilled water, stand-by;

Step 2: Add distilled water into the mixing tank and stir at low speed;

Step 3: Add dispersant to distilled water and stir at low speed for 8 minutes;

Step 4: Add nano cerium oxide powder into distilled water and stir at medium speed for 12 minutes;

Step 5. Add suspending agent to distilled water and stir at medium speed for 18 minutes;

Step 6: Add ethylene glycol to the distilled water and stir at medium speed for 12 minutes;

Step 7: Complete the packaging and storage of the proportioning.

Polishing and grinding for MT12-core multi-mode optical fiber connector products, take the configured MT optical fiber polishing slurry and place it on the grinding platform, drive the MT connector clamped by the grinding machine to contact the optical fiber polishing slurry on the grinding platform, and drive the grinding The platform turns.

During the grinding process, the grinding pressure is 3000 grams, the grinding speed is 180r/s, and the grinding time is 40s.

Example 3

Step 1, the parts by weight are weighed as follows: 25 parts by weight of nano cerium oxide powder with a maximum particle size of 0.3um, 50 parts by weight of distilled water, 15 parts by weight of ethylene glycol, and the dispersant of Guangzhou Runhong Chemical Co., Ltd. model is 8605 is distilled water 6% of the weight, the suspending agent of Qingdao Wanjia Huixin Surface Material Technology Co., Ltd. model M-205 is 6% of the distilled water weight, stand-by;

Step 2: Add distilled water into the mixing tank and stir at low speed;

Step 3: Add dispersant to distilled water and stir at low speed for 5 minutes;

Step 4: Add nanometer cerium oxide powder into distilled water and stir at medium speed for 10 minutes;

Step 5. Add suspending agent to distilled water and stir at medium speed for 15 minutes;

Step 6: Add ethylene glycol to the distilled water and stir at medium speed for 10 minutes;

Step 7: Complete the packaging and storage of the proportioning.

Polishing and grinding for MT12-core multi-mode optical fiber connector products, take the configured MT optical fiber polishing slurry and place it on the grinding platform, drive the MT connector clamped by the grinding machine to contact the optical fiber polishing slurry on the grinding platform, and drive the grinding The platform turns.

During the grinding process, the grinding pressure was 2500 grams, the grinding speed was 150 r/s, and the grinding time was 30 s.

Example 4

Step 1, the parts by weight are weighed as follows: 35 parts by weight of nano-cerium oxide powder with a maximum particle size of 0.5um, 70 parts by weight of distilled water, 25 parts by weight of ethylene glycol, and the dispersant of Guangzhou Runhong Chemical Co., Ltd. model is 8605 is distilled water 12% by weight, the suspending agent of Qingdao Wanjia Huixin Surface Material Technology Co., Ltd. model M-205 is 9% by weight of distilled water, stand-by;

Step 2: Add distilled water into the mixing tank and stir at low speed;

Step 3: Add dispersant to distilled water and stir at low speed for 5 minutes;

Step 4: Add nanometer cerium oxide powder into distilled water and stir at medium speed for 10 minutes;

Step 5. Add suspending agent to distilled water and stir at medium speed for 15 minutes;

Step 6: Add ethylene glycol to the distilled water and stir at medium speed for 10 minutes;

Step 7: Complete the packaging and storage of the proportioning.

Polishing and grinding for MT12-core multi-mode optical fiber connector products, take the configured MT optical fiber polishing slurry and place it on the grinding platform, drive the MT connector clamped by the grinding machine to contact the optical fiber polishing slurry on the grinding platform, and drive the grinding The platform turns.

During the grinding process, the grinding pressure was 2500 grams, the grinding speed was 150 r/s, and the grinding time was 30 s.

Example 5

Step 1, the parts by weight are weighed as follows: 30 parts by weight of nano-cerium oxide powder with a maximum particle size of 0.4um, 60 parts by weight of distilled water, 20 parts by weight of ethylene glycol, and the dispersant of Guangzhou Runhong Chemical Co., Ltd. model 8605 is distilled water 9% of the weight, the suspending agent of Qingdao Wanjia Huixin Surface Material Technology Co., Ltd. model M-205 is 7% of the distilled water weight, stand-by;

Step 2: Add distilled water into the mixing tank and stir at low speed;

Step 3: Add the dispersant to distilled water and stir at low speed for 5 minutes;

Step 4: Add nanometer cerium oxide powder into distilled water and stir at medium speed for 10 minutes;

Step 5. Add suspending agent to distilled water and stir at medium speed for 15 minutes;

Step 6: Add ethylene glycol to the distilled water and stir at medium speed for 10 minutes;

Step 7: Complete the packaging and storage of the proportioning.

Polishing and grinding for MT12-core multi-mode optical fiber connector products, take the configured MT optical fiber polishing slurry and place it on the grinding platform, drive the MT connector clamped by the grinding machine to contact the optical fiber polishing slurry on the grinding platform, and drive the grinding The platform turns.

During the grinding process, the grinding pressure was 2500 grams, the grinding speed was 150 r/s, and the grinding time was 30 s.

Example 6

Step 1, the parts by weight are weighed as follows: 30 parts by weight of nano-cerium oxide powder with a particle size of 0.4um, 60 parts by weight of distilled water, 20 parts by weight of ethylene glycol, and the dispersant of Guangzhou Runhong Chemical Co., Ltd. model is 8605 is the weight of distilled water 10%, the suspending agent of Qingdao Wanjia Huixin Surface Material Technology Co., Ltd. model M-205 is 5% of distilled water weight, stand-by;

Step 2: Add distilled water into the mixing tank and stir at low speed;

Step 3: Add dispersant to distilled water and stir at low speed for 5 minutes;

Step 4: Add nanometer cerium oxide powder into distilled water and stir at medium speed for 10 minutes;

Step 5. Add suspending agent to distilled water and stir at medium speed for 15 minutes;

Step 6: Add ethylene glycol to the distilled water and stir at medium speed for 10 minutes;

Step 7: Complete the packaging and storage of the proportioning.

Polishing and grinding for MT12-core multi-mode optical fiber connector products, take the configured MT optical fiber polishing slurry and place it on the grinding platform, drive the MT connector clamped by the grinding machine to contact the optical fiber polishing slurry on the grinding platform, and drive the grinding The platform turns.

During the grinding process, the grinding pressure was 2500 grams, the grinding speed was 150 r/s, and the grinding time was 30 s.

Example 7

Step 1, the parts by weight are weighed as follows: 30 parts by weight of nano-cerium oxide powder with a particle size of 0.4um, 60 parts by weight of distilled water, 20 parts by weight of ethylene glycol, and the dispersant of Guangzhou Runhong Chemical Co., Ltd. model is 8605 is the weight of distilled water 9%, the suspending agent of Qingdao Wanjia Huixin Surface Material Technology Co., Ltd. model M-205 is 7% of distilled water weight, stand-by;

Step 2: Add distilled water into the mixing tank and stir at low speed;

Step 3: Add dispersant to distilled water and stir at low speed for 5 minutes;

Step 4: Add nanometer cerium oxide powder into distilled water and stir at medium speed for 10 minutes;

Step 5. Add suspending agent to distilled water and stir at medium speed for 15 minutes;

Step 6: Add ethylene glycol to the distilled water and stir at medium speed for 10 minutes;

Step 7: Proportioning and packaging are completed.

Polishing and grinding for MT12-core multi-mode optical fiber connector products, take the configured MT optical fiber polishing slurry and place it on the grinding platform, drive the MT connector clamped by the grinding machine to contact the optical fiber polishing slurry on the grinding platform, and drive the grinding The platform turns.

During the grinding process, the grinding pressure is 2000g, the grinding speed is 120r/s, and the grinding time is 20s.

Comparative example 1

Step 1, the parts by weight are weighed as follows: 40 parts by weight of nano cerium oxide powder with a particle size of 0.4um, 30 parts by weight of distilled water, and 30 parts by weight of ethylene glycol, for use;

Step 2: Add distilled water into the mixing tank and stir at low speed;

Step 3: Add nano cerium oxide powder into distilled water and stir at medium speed for 10 minutes;

Step 4: Add ethylene glycol to distilled water and stir at medium speed for 10 minutes;

Step 5: Proportioning and packaging are completed.

Polishing and grinding for MT12-core multi-mode optical fiber connector products, take the configured MT optical fiber polishing slurry and place it on the grinding platform, drive the MT connector clamped by the grinding machine to contact the optical fiber polishing slurry on the grinding platform, and drive the grinding The platform turns.

During the grinding process, the grinding pressure was 2500 grams, the grinding speed was 150 r/s, and the grinding time was 30 s.

Comparative example 2

Step 1, the parts by weight are weighed as follows: 20 parts by weight of nano-cerium oxide powder with a particle size of 0.4um, 60 parts by weight of distilled water, 20 parts by weight of ethylene glycol, and the dispersant of Guangzhou Runhong Chemical Co., Ltd. model 8605 is the weight of distilled water 5% to be used;

Step 2: Add distilled water into the mixing tank and stir at low speed;

Step 3: Add dispersant to distilled water and stir at low speed for 5 minutes;

Step 4: Add nanometer cerium oxide powder into distilled water and stir at medium speed for 10 minutes;

Step 5, add ethylene glycol to the distilled water and stir at a medium speed for 10 minutes;

Step 6: Proportioning and packaging are completed.

Polishing and grinding for MT12-core multi-mode optical fiber connector products, take the configured MT optical fiber polishing slurry and place it on the grinding platform, drive the MT connector clamped by the grinding machine to contact the optical fiber polishing slurry on the grinding platform, and drive the grinding The platform turns.

During the grinding process, the grinding pressure was 2500 grams, the grinding speed was 150 r/s, and the grinding time was 30 s.

Comparative example 3

Step 1, the parts by weight are weighed as follows: 30 parts by weight of nano-cerium oxide powder with a particle size of 0.4um, 60 parts by weight of distilled water, 20 parts by weight of ethylene glycol, and the dispersant of Guangzhou Runhong Chemical Co., Ltd. model is 8605 is the weight of distilled water 2% of 2%, the suspending agent of Qingdao Wanjia Huixin Surface Material Technology Co., Ltd. model M-205 is 2% of distilled water weight, stand-by;

Step 2: Add distilled water into the mixing tank and stir at low speed;

Step 3: Add dispersant to distilled water and stir at low speed for 5 minutes;

Step 4: Add nanometer cerium oxide powder into distilled water and stir at medium speed for 10 minutes;

Step 5. Add suspending agent to distilled water and stir at medium speed for 15 minutes;

Step 6: Add ethylene glycol to the distilled water and stir at medium speed for 10 minutes;

Step 7: Proportioning and packaging are completed.

Polishing and grinding for MT12-core multi-mode optical fiber connector products, take the configured MT optical fiber polishing slurry and place it on the grinding platform, drive the MT connector clamped by the grinding machine to contact the optical fiber polishing slurry on the grinding platform, and drive the grinding The platform turns.

During the grinding process, the grinding pressure was 2500 grams, the grinding speed was 150 r/s, and the grinding time was 40 s.

Comparative example 4

Step 1, the parts by weight are weighed as follows: 30 parts by weight of nano-cerium oxide powder with a particle size of 0.4um, 50 parts by weight of distilled water, 20 parts by weight of ethylene glycol, and the dispersant of Guangzhou Runhong Chemical Co., Ltd. model 8605 is the weight of distilled water 3%, the suspending agent of Qingdao Wanjia Huixin Surface Material Technology Co., Ltd. model is M-205 is 3% of distilled water weight, stand-by;

Step 2: Add distilled water into the mixing tank and stir at low speed;

Step 3: Add dispersant to distilled water and stir at low speed for 5 minutes;

Step 4: Add nanometer cerium oxide powder into distilled water and stir at medium speed for 10 minutes;

Step 5. Add suspending agent to distilled water and stir at medium speed for 15 minutes;

Step 6: Add ethylene glycol to the distilled water and stir at medium speed for 10 minutes;

Step 7: Proportioning and packaging are completed.

Polishing and grinding for MT12-core multi-mode optical fiber connector products, take the configured MT optical fiber polishing slurry and place it on the grinding platform, drive the MT connector clamped by the grinding machine to contact the optical fiber polishing slurry on the grinding platform, and drive the grinding The platform turns.

During the grinding process, the grinding pressure was 2500 grams, the grinding speed was 150 r/s, and the grinding time was 40 s.

Comparative example 5

Compared with Example 6, ethylene glycol equivalent parts are replaced with polyethylene glycol, and all the other are the same.

The polished fiber end faces obtained in the above-mentioned Examples 1-7 and Comparative Examples 1-5 were subjected to a 3D interference test according to the IEC industry standard. The test results obtained by the brands of the interference tester including Dimension, Daisi, and Sumix are shown in Table 1. The polishing solution It only affects the core depression and end face effect in the 3D interference value, and the experimental comparison data only collects two data of the fiber core depression and end face effect.

In Table 1, according to the experimental data and result analysis, the weight ratio of nano cerium oxide powder, purified water, and diol monomer humectant is (2-4): (4-8): (1-3), dispersed The agent is 3%-15% of the weight of purified water, and the suspending agent is 5%-10% of the weight of purified water; the particle size range of nano-cerium oxide powder is 0.2um≤α≤0.7um, and the optical fiber polishing and grinding obtained through this ratio Fluid, face and interference fully meet industry specifications.

In the description of the specification, descriptions referring to the terms "one embodiment", "example", "specific example" and the like mean that specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one of the present invention. Examples or examples. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above content is only an example and description of the present invention. Those skilled in the art will make various modifications or supplements to the described specific embodiments or replace them in similar ways, as long as they do not deviate from the invention or exceed the rights of the present invention. The scope defined in the claims should all belong to the protection scope of the present invention.

Claims (10)

1. An optical fiber polishing grinding fluid is characterized in that: comprises nano cerium oxide powder, purified water, hydrophilic dispersing agent, water-soluble suspending agent and dihydric alcohol monomer humectant;

wherein, the weight ratio of the nano cerium oxide powder to the purified water to the glycol monomer humectant is (2-4): (4-8): (1-3), wherein the dispersing agent is 3-15% of the weight of the purified water, and the suspending agent is 5-10% of the weight of the purified water;

the granularity range of the nano cerium oxide powder is more than or equal to 0.2um and less than or equal to 0.7um.

2. The optical fiber polishing slurry according to claim 1, wherein: the granularity range of the nano cerium oxide powder is more than or equal to 0.3um and less than or equal to 0.5um.

3. The optical fiber polishing slurry according to claim 1, wherein: the dispersant comprises a modified polyether phosphate compound containing hydrophilic groups.

4. The optical fiber polishing slurry according to claim 1, wherein: the dispersing agent is 8605 dispersing agent of Guangzhou Mahong chemical Co Ltd.

5. The optical fiber polishing slurry according to claim 1, wherein: the suspending agent comprises a water-soluble liquid polymer, an emulsifying agent and water-soluble cellulose.

6. The optical fiber polishing slurry according to any one of claims 1 to 5, wherein: the glycol monomer humectant comprises ethylene glycol.

7. A preparation method of an optical fiber polishing grinding fluid is characterized by comprising the following steps: the method comprises the following steps:

step one, weighing the following components in parts by weight: 20-40 parts by weight of nano cerium oxide powder, 40-80 parts by weight of purified water and 10-30 parts by weight of dihydric alcohol monomer humectant, wherein a dispersing agent accounts for 3-15% by weight of the purified water, and a suspending agent accounts for 5-10% by weight of the purified water for later use;

step two, adding the purified water into a stirring barrel for low-speed stirring;

step three, adding the dispersing agent into the purified water, and stirring for 3-8 minutes at a low speed;

step four, adding the nano cerium oxide powder into the purified water, and stirring for 8-12 minutes at medium speed;

step five, adding the suspending agent into the purified water, and stirring at medium speed for 12-18 minutes;

step six, adding the dihydric alcohol monomer humectant into the purified water, and stirring for 8-12 minutes at medium speed;

and step seven, proportioning, packaging and warehousing.

8. The method for preparing an optical fiber polishing slurry according to claim 7, wherein: in the third step, the dispersing agent is stirred for 5 minutes at a low speed;

in the fourth step, the nano cerium oxide powder is stirred for 10 minutes at medium speed;

in the fifth step, the suspending agent is stirred for 15 minutes at medium speed;

in the sixth step, the glycol monomer humectant is stirred at medium speed for 10 minutes.

9. An optical fiber polishing and grinding process is characterized in that: preparing the optical fiber polishing slurry according to any one of claims 1 to 6 by the preparation method according to any one of claims 7 to 8, and polishing and grinding the optical fiber;

in the grinding process, the grinding pressure is 2000-3000 g, the grinding rotating speed is 120-180r/s, and the grinding time is 20-40s.

10. The optical fiber polishing and grinding process according to claim 9, wherein: the grinding pressure is 2500 g, the grinding rotating speed is 150r/s, and the grinding time is 30s.