Silicon fusion adhesive used based on optical fiber fusion process

Abstract

The invention relates to a silicon fusion adhesive used based on an optical fiber fusion process. The silicon fusion adhesive comprises the following components: 6 parts of PVA, 5 parts of hydrochloric acid, 5 parts of formaldehyde, 8 parts of caustic soda, 6 parts of urea, 11 parts of silica sol, 25 parts of water, 3 parts of an auxiliary agent I, 4 parts of an auxiliary agent II and 4 parts of an auxiliary agent III. The silicon fusion adhesive has the advantages that the prepared silicon fusion adhesive is better in viscosity performance, the raw material cost is low, the manufacturing cost is effectively reduced, meanwhile, the manufacturing process is simple, and the manufacturing period is shortened.

Description

Technical Field

[0001] The invention relates to the technical field of adhesives, and in particular to a silicon fusion adhesive used in an optical fiber melting process. Background Art

[0002] Fiber fusion splicing technology mainly uses a fiber fusion machine to connect optical fibers or optical fibers and pigtails, fusing the bare fibers and fiber pigtails in the optical cable together into a whole, while the pigtail has a separate fiber head. In the process of fiber fusion, silicon fusion adhesive is required.

[0003] The viscosity of existing silicon fusion adhesives needs to be improved. At the same time, the manufacturing cost of existing silicon fusion adhesives is relatively high, and the manufacturing process is relatively complicated. Summary of the invention

[0004] 1. Technical Problems Solved

[0005] The technical problem to be solved by the present invention is that the existing silicon fusion adhesive has poor viscosity, and its manufacturing process is complicated and the manufacturing cost is high.

[0006] 2. Technical Solution

[0007] In order to solve the above technical problems, a silicon fusion adhesive used in the optical fiber melting process includes the following components:

[0008] PVA 5-8 parts, hydrochloric acid 4-6 parts, formaldehyde 4-6 parts, caustic soda 7-10 parts, urea 4-8 parts, silica sol 10-12 parts, water 20-30 parts, additive 1 2-4 parts, additive 2 2-5 parts and additive 3 2-5 parts.

[0009] Further, 6 parts of PVA, 5 parts of hydrochloric acid, 5 parts of formaldehyde, 8 parts of caustic soda, 6 parts of urea, 11 parts of silica sol, 25 parts of water, 3 parts of auxiliary agent 1, 4 parts of auxiliary agent 2 and 4 parts of auxiliary agent 3.

[0010] Furthermore, the auxiliary agent 1 is an acrylate polymer.

[0011] Furthermore, the second auxiliary agent is alcohol.

[0012] Furthermore, the auxiliary agent three is a wetting dispersant.

[0013] Furthermore, a method for preparing a silicon fusion adhesive used in an optical fiber melting process comprises the following steps:

[0014] S1. Inject measured water into the water bath reactor and heat it to 70°C;

[0015] S2, PVA is added into the reactor and stirred, and the temperature is continuously raised to 90-95°C, and the temperature is kept constant for about half an hour to fully dissolve the PVA to obtain a transparent PVA aqueous solution;

[0016] S3, cooling to 60°C, and adjusting the pH value of the PVA aqueous solution to 2 with hydrochloric acid;

[0017] S4, injecting auxiliary agent 1 into the reactor and stirring;

[0018] S5, adding formaldehyde, raising the temperature to 85-90° C., reacting for 40 minutes under stirring to obtain a polyvinyl formal aqueous solution;

[0019] S6, cooling to 60°C, and adjusting the pH value of the above solution to the range of 7-8 with NaOH;

[0020] S7, adding urea to react with the residual free formaldehyde for 30 minutes;

[0021] S8. Use a small amount of hot water to dissolve the auxiliary agent 3 into a water bath liquid, and stir it with the silica sol and the auxiliary agent 2 thoroughly and evenly, then leave it for 20 minutes, and then mix it evenly with the polyvinyl acetal aqueous solution obtained by the above-mentioned reaction with urea to obtain a polyvinyl alcohol-silica sol adhesive.

[0022] Furthermore, the stirring time in S4 is 5 minutes.

[0023] Furthermore, the temperature of the polyvinyl acetal aqueous solution in S8 is 60°C.

[0024] 3. Beneficial Effects

[0025] The advantages of the present invention compared with the prior art are:

[0026] The prepared silicon fusion adhesive has better viscosity performance and lower raw material cost, which effectively reduces the production cost. At the same time, the production process is simple, which reduces the production cycle. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the invention.

[0031] The present invention will now be further described.

[0032] Embodiment 1

[0033] The present invention provides a silicon fusion adhesive used in an optical fiber melting process, comprising the following components:

[0034] 5 parts of PVA, 6 parts of hydrochloric acid, 4 parts of formaldehyde, 7 parts of caustic soda, 8 parts of urea, 12 parts of silica sol, 20 parts of water, 2 parts of acrylate polymer, 5 parts of alcohol and 2 parts of wetting and dispersing agent.

[0035] The following steps were taken during the preparation process:

[0036] S1. Inject measured water into the water bath reactor and heat it to 70°C;

[0037] S2, PVA is added into the reactor and stirred, and the temperature is continuously raised to 90-95°C, and the temperature is kept constant for about half an hour to fully dissolve the PVA to obtain a transparent PVA aqueous solution;

[0038] S3, cooling to 60°C, and adjusting the pH value of the PVA aqueous solution to 2 with hydrochloric acid;

[0039] S4, injecting auxiliary agent 1 into the reactor and stirring for 5 minutes;

[0040] S5, adding formaldehyde, raising the temperature to 85-90° C., reacting for 40 minutes under stirring to obtain a polyvinyl formal aqueous solution;

[0041] S6, cooling to 60°C, and adjusting the pH value of the above solution to the range of 7-8 with NaOH;

[0042] S7, adding urea to react with the residual free formaldehyde for 30 minutes;

[0043] S8. Use a small amount of hot water to dissolve the auxiliary agent 3 into a water bath liquid, and stir it with the silica sol and the auxiliary agent 2 thoroughly and leave it for 20 minutes, then mix it evenly with the polyvinyl acetal aqueous solution obtained by the above-mentioned reaction with urea. The temperature of the polyvinyl acetal aqueous solution is about 60°C to obtain a polyvinyl alcohol-silica sol adhesive.

[0044] Embodiment 2

[0045] The present invention provides a silicon fusion adhesive used in an optical fiber melting process, comprising the following components:

[0046] PVA 6 parts, hydrochloric acid 5 parts, formaldehyde 5 parts, caustic soda 8 parts, urea 6 parts, silica sol 11 parts, water 25 parts, additive 1 3 parts, additive 2 4 parts and additive 3 4 parts.

[0047] The following steps were taken during the preparation process:

[0048] S1. Inject measured water into the water bath reactor and heat it to 70°C;

[0049] S2, PVA is added into the reactor and stirred, and the temperature is continuously raised to 90-95°C, and the temperature is kept constant for about half an hour to fully dissolve the PVA to obtain a transparent PVA aqueous solution;

[0050] S3, cooling to 60°C, and adjusting the pH value of the PVA aqueous solution to 2 with hydrochloric acid;

[0051] S4, injecting auxiliary agent 1 into the reactor and stirring for 5 minutes;

[0052] S5, adding formaldehyde, raising the temperature to 85-90° C., reacting for 40 minutes under stirring to obtain a polyvinyl formal aqueous solution;

[0053] S6, cooling to 60°C, and adjusting the pH value of the above solution to the range of 7-8 with NaOH;

[0054] S7, adding urea to react with the residual free formaldehyde for 30 minutes;

[0055] S8. Use a small amount of hot water to dissolve the auxiliary agent 3 into a water bath liquid, and stir it with the silica sol and the auxiliary agent 2 thoroughly and leave it for 20 minutes, then mix it evenly with the polyvinyl acetal aqueous solution obtained by the above-mentioned reaction with urea. The temperature of the polyvinyl acetal aqueous solution is about 60°C to obtain a polyvinyl alcohol-silica sol adhesive.

[0056] The invention and its implementation methods are described, which is not restrictive and is only one of the implementation methods of the invention. The actual structure is not limited to this. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention, they should all fall within the protection scope of the invention.

Claims

1. A silicon fusion adhesive used in the optical fiber melting process, It is characterized in that Includes the following components: PVA 5-8 parts, hydrochloric acid 4-6 parts, formaldehyde 4-6 parts, caustic soda 7-10 parts, urea 4-8 parts, silica sol 10-12 parts, water 20-30 parts, additive 1 2-4 parts, additive 2 2-5 parts and additive 3 2-5 parts.

2. A silicon fusion adhesive used in an optical fiber melting process according to claim 1, It is characterized in that Includes the following components: PVA 6 parts, hydrochloric acid 5 parts, formaldehyde 5 parts, caustic soda 8 parts, urea 6 parts, silica sol 11 parts, water 25 parts, additive 1 3 parts, additive 2 4 parts and additive 3 4 parts.

3. The silicon fusion adhesive used in the optical fiber melting process according to claim 1, Features: The auxiliary agent 1 is an acrylic ester polymer.

4. The silicon fusion adhesive used in the optical fiber melting process according to claim 1, Features: The second auxiliary agent is alcohol.

5. The silicon fusion adhesive used in the optical fiber melting process according to claim 1, Features: The auxiliary agent three is a wetting dispersant.

6. A method for preparing a silicon fusion adhesive used in an optical fiber melting process according to claim 1, It is characterized in that The following steps are involved: S1. Inject measured water into the water bath reactor and heat it to 70°C; S2, PVA is added into the reactor and stirred, and the temperature is continuously raised to 90-95°C, and the temperature is kept constant for about half an hour to fully dissolve the PVA to obtain a transparent PVA aqueous solution; S3, cooling to 60°C, and adjusting the pH value of the PVA aqueous solution to 2 with hydrochloric acid; S4, injecting auxiliary agent 1 into the reactor and stirring; S5, adding formaldehyde, raising the temperature to 85-90° C., reacting for 40 minutes under stirring to obtain a polyvinyl formal aqueous solution; S6, cooling to 60°C, and adjusting the pH value of the above solution to the range of 7-8 with NaOH; S7, adding urea to react with the residual free formaldehyde for 30 minutes; S8. Use a small amount of hot water to dissolve the auxiliary agent 3 into a water bath liquid, and stir it with the silica sol and the auxiliary agent 2 thoroughly and evenly, then leave it for 20 minutes, and then mix it evenly with the polyvinyl acetal aqueous solution obtained by the above-mentioned reaction with urea to obtain a polyvinyl alcohol-silica sol adhesive.

7. A method for preparing a silicon fusion adhesive used in an optical fiber melting process according to claim 6, Features: The stirring time in S4 is 5 minutes.

8. A method for preparing a silicon fusion adhesive used in an optical fiber melting process according to claim 6, Features: The temperature of the polyvinyl acetal aqueous solution in S8 is 60°C.