Rubber material for protecting optical fiber head and preparation method thereof

Abstract

The invention discloses a rubber material for protecting an optical fiber head and a preparation method of the rubber material. The rubber material for protecting the optical fiber head comprises the following raw materials in parts by mass: 80-100 parts of butyl rubber, 2-3 parts of a tackifier, 0.1-0.3 part of a chemical peptizer, 5-10 parts of carbon black and 2-3 parts of a wax additive. The rubber material for protecting the optical fiber head, which is prepared by selecting butyl rubber as a main raw material, is simple in manufacturing process, low in cost and very good in bonding degree, is beneficial to protecting the optical fiber from being damaged and preventing the optical fiber from being worn by a metal aluminum sheet, and can also play a role in bonding the aluminum sheet and the optical fiber and preventing the optical fiber from sliding.

Description

Technical Field

[0001] The invention relates to the technical field of rubber materials, and in particular to a rubber material for protecting an optical fiber head and a preparation method thereof. Background Art

[0002] The rubber materials used in making optical fiber heads generally include silicone rubber, EPDM rubber, chloroprene rubber, natural rubber, etc. For optical fiber head rubber products, it is particularly important to choose the right rubber material, which requires protection of optical fiber, low temperature resistance, good flexibility, high adhesion, good insulation, and good sealing. Summary of the invention

[0003] The main purpose of the present invention is to provide a rubber material for protecting an optical fiber head and a preparation method thereof, aiming to provide a rubber material with low cost and good viscosity suitable for protecting an optical fiber head.

[0004] To achieve the above-mentioned purpose, the present invention proposes a rubber material for protecting an optical fiber head, wherein the rubber material for protecting an optical fiber head comprises the following raw materials in parts by weight: 80 to 100 parts of butyl rubber, 2 to 3 parts of a tackifier, 0.1 to 0.3 parts of a chemical peptizer, 5 to 10 parts of carbon black, and 2 to 3 parts of a wax additive.

[0005] Optionally, the tackifier comprises a phenolic resin.

[0006] Optionally, the chemical peptizer comprises pentachlorothiophenol.

[0007] Optionally, the wax additive includes polyethylene wax.

[0008] To achieve the above object, the present invention also proposes a method for preparing the rubber material for protecting an optical fiber head as described above, comprising the following steps:

[0009] Step S10, firstly putting butyl rubber and chemical peptizer into an open mill for first mixing, and then adding tackifier, carbon black and wax additives for second mixing, and after mixing, forming strips and naturally resting to obtain rubber strips;

[0010] Step S20, putting the rubber strip into an extruder for extrusion molding to obtain a rubber material for protecting an optical fiber head.

[0011] Optionally, in step S10:

[0012] The mixing time of the first mixing is 2 to 4 minutes.

[0013] Optionally, in step S10:

[0014] The mixing time of the second mixing is 4 to 6 minutes.

[0015] Optionally, in step S10:

[0016] The natural parking time is 12 to 24 hours.

[0017] Optionally, in step S20:

[0018] The parameters of the extruder are set as follows: first stage temperature 40-50°C, second stage temperature 50-60°C, third stage temperature 60-80°C, and screw speed 35-45 rpm.

[0019] In the technical solution provided by the present invention, butyl rubber is selected as the main raw material to make the rubber material used to protect the optical fiber head. The manufacturing process is simple, the cost is low, and the adhesion is very good. It is beneficial to protect the optical fiber from being damaged and prevent the metal aluminum sheet from wearing the optical fiber. It can also play the effect of bonding the aluminum sheet and the optical fiber to prevent the optical fiber from sliding. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 The present invention is a schematic flow chart of an embodiment of a method for preparing a rubber material for protecting an optical fiber head provided by the present invention.

[0022] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0023] To make the purpose, technical scheme and advantages of the embodiment of the present invention clearer, the technical scheme in the embodiment of the present invention will be described clearly and completely below. If the specific conditions are not specified in the embodiment, it is carried out according to the normal conditions or the conditions recommended by the manufacturer. If the reagents or instruments used do not specify the manufacturer, they are all conventional products that can be purchased commercially. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes, taking "A and / or B" as an example, including scheme A, or scheme B, or schemes that A and B meet at the same time. In addition, the technical schemes between the various embodiments can be combined with each other, but must be based on the ability of ordinary technicians in the field to achieve. When the combination of technical solutions is contradictory or cannot be achieved, it should be considered that the combination of such technical solutions does not exist, and is not within the scope of protection required by the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present invention.

[0024] The rubber materials used for optical fiber heads generally include silicone rubber, EPDM rubber, chloroprene rubber, natural rubber, etc. For optical fiber head rubber products, it is required to protect the optical fiber, be resistant to low temperatures, have good flexibility, high adhesion, good insulation, and good sealing. It is particularly important to choose a suitable rubber material. Commonly used materials have some disadvantages when used as rubber materials to protect optical fiber heads. For example, silicone rubber has low strength and high process difficulty, and chloroprene rubber has high cost and poor viscosity increase.

[0025] In order to further meet the requirements of using as a rubber material to protect optical fiber heads, it is necessary to develop materials with the best performance in all aspects. The inventors have found through research and development and practice that butyl rubber materials have low costs and simple manufacturing processes. Using butyl rubber as the main raw material to prepare rubber materials for protecting optical fiber heads has low costs and good viscosity, and can effectively protect optical fiber heads from damage. Specifically, the present invention proposes a rubber material for protecting optical fiber heads, and the rubber material for protecting optical fiber heads includes the following raw materials in parts by mass: 80 to 100 parts of butyl rubber, 2 to 3 parts of tackifier, 0.1 to 0.3 parts of chemical peptizer, 5 to 10 parts of carbon black, and 2 to 3 parts of wax additives.

[0026] In the technical solution provided by the present invention, the rubber material used to protect the optical fiber head is made of butyl rubber as the main raw material, which has a simple manufacturing process, low cost, and very good adhesion, which is conducive to protecting the optical fiber from damage, preventing the metal aluminum sheet from abrading the optical fiber, and can also play the role of bonding the aluminum sheet and the optical fiber to prevent the optical fiber from sliding. Further, in some specific embodiments of the present invention, the butyl rubber is preferably of the grade IIR0745.

[0027] In the present invention, the tackifier is mainly used to form a hydrogen bond network structure with the rubber to change the viscoelasticity of the material and obtain optimal viscosity. Specifically, in some embodiments of the present invention, the tackifier includes a phenolic resin, preferably a phenolic resin GML.

[0028] In the present invention, the main function of the chemical peptizer is to improve the plasticity and plasticizing efficiency of rubber. Specifically, in some embodiments of the present invention, the chemical peptizer includes pentachlorothiophenol, preferably pentachlorothiophenol SJ-103.

[0029] In the present invention, the wax additives are used to improve the surface properties of the material, improve the demoulding properties, improve the aging resistance of the rubber material and improve the flexibility. Specifically, in some embodiments of the present invention, the wax additives include polyethylene wax, which is more effective in improving the demoulding properties of the material.

[0030] Based on the above rubber material for protecting the optical fiber head, the present invention also proposes a method for preparing the above rubber material for protecting the optical fiber head, which is made of butyl rubber as the main raw material through rubber mixing, extrusion molding and other processes. Figure 1 FIG. 1 is an embodiment of a method for preparing a rubber material for protecting an optical fiber head provided by the present invention. Figure 1 As shown, in this embodiment, the method for preparing the rubber material for protecting the optical fiber head includes the following steps:

[0031] Step S10, firstly putting butyl rubber and chemical peptizer into an open mill for first mixing, and then adding tackifier, carbon black and wax additives for second mixing, and after mixing, forming strips and naturally resting to obtain rubber strips;

[0032] Step S20, putting the rubber strip into an extruder for extrusion molding to obtain a rubber material for protecting an optical fiber head.

[0033] In the technical solution provided by the present invention, butyl rubber is selected as the main raw material to make the rubber material for protecting the optical fiber head. The manufacturing process is simple and the cost is low. It is suitable for large-scale automated production and has very good adhesion. It is beneficial to protect the optical fiber from being damaged and avoid the metal aluminum sheet from wearing the optical fiber. It can also play the effect of bonding the aluminum sheet and the optical fiber to prevent the optical fiber from sliding.

[0034] In some embodiments of the present invention, in step S10: the mixing time of the first mixing is 2 to 4 minutes, for example, it can be 2 minutes, 2 minutes 10 seconds, 2 minutes 20 seconds, 2 minutes 30 seconds, 2 minutes 40 seconds, 2 minutes 50 seconds, 3 minutes, 3 minutes 10 seconds, 3 minutes 20 seconds, 3 minutes 30 seconds, 3 minutes 40 seconds, 3 minutes 50 seconds, 4 minutes, etc. The specific time can be adjusted according to the mixing uniformity of the butyl rubber and the chemical peptizer.

[0035] In some embodiments of the present invention, in step S10: the mixing time of the second mixing is 4 to 6 minutes, for example, it can be 4 minutes, 4 minutes 10 seconds, 4 minutes 20 seconds, 4 minutes 30 seconds, 4 minutes 40 seconds, 4 minutes 50 seconds, 5 minutes, 5 minutes 10 seconds, 5 minutes 20 seconds, 5 minutes 30 seconds, 5 minutes 40 seconds, 5 minutes 50 seconds, 6 minutes, etc., and the specific time can be adjusted according to the actual mixing conditions. In addition, the first mixing and the second mixing in step S10 can be carried out at room temperature. If overheating occurs during the mixing process, cooling water can be introduced for cooling.

[0036] In the present invention, the natural parking refers to placing the prepared rubber compound at room temperature. In some embodiments of the present invention, the parking time of the natural parking in step S10 is 12 to 24 hours, for example, it can be 12 hours, 13 hours, 14 hours, 15 hours, 16 hours, 17 hours, 18 hours, 19 hours, 20 hours, 21 hours, 22 hours, 23 hours, 24 hours, etc. During this natural parking process, the rubber compound can be restored from fatigue, the mechanical stress during mixing can be relaxed, and the shrinkage of the rubber compound can be reduced; the compounding agent can continue to diffuse in the rubber compound to promote uniform dispersion; the rubber and carbon black can further interact with each other to generate more combined rubber and improve the reinforcement effect.

[0037] The main parameters of the extruder in step S20 include a first-stage temperature, a second-stage temperature, a third-stage temperature and a screw speed. In some embodiments of the present invention, the parameters of the extruder are set as follows: a first-stage temperature is set to 40-50°C, for example, 40°C, 41°C, 42°C, 43°C, 44°C, 45°C, 46°C, 47°C, 48°C, 49°C, 50°C, etc., a second-stage temperature is set to 50-60°C, for example, 50°C, 51°C, 52°C, 53°C, 54°C, 55°C, 56°C, 57°C, 58°C, 59°C, 60°C, etc., and a third-stage temperature is set to 60-80°C, for example For example, it can be 60℃, 61℃, 62℃, 63℃, 64℃, 65℃, 66℃, 67℃, 68℃, 69℃, 70℃, 71℃, 72℃, 73℃, 74℃, 75℃, 76℃, 77℃, 78℃, 79℃, 80℃ and the like, and the screw speed is set to 35-45rpm, for example, it can be 35rpm, 36rpm, 37rpm, 38rpm, 39rpm, 40rpm, 41rpm, 42rpm, 43rpm, 44rpm, 45rpm, 46rpm, 47rpm, 48rpm, 49rpm, 50rpm and the like.

[0038] The technical solution of the present invention is further described in detail below in conjunction with specific embodiments and drawings. It should be understood that the following embodiments are only used to explain the present invention and are not used to limit the present invention.

[0039] Example 1

[0040] (1) The raw materials of the rubber material used to protect the optical fiber head include, by weight: 80 parts of butyl rubber (IIR0745), 2 parts of tackifier (phenolic resin GML), 0.1 parts of chemical peptizer (pentachlorobenzenethiol SJ-103), 5 to 10 parts of carbon black, and 2 parts of wax additive (polyethylene wax).

[0041] (2) The steps of preparing the rubber material for protecting the optical fiber head include:

[0042] First, butyl rubber and chemical peptizer are put into an open mill for the first mixing, the mixing time is 2 minutes, and then tackifier, carbon black and wax additives are added for the second mixing, the mixing time is 6 minutes, and after the mixing is completed, the strip is produced and naturally parked for 12 hours to obtain a rubber strip;

[0043] Next, the prepared rubber strip is put into a preheated extruder for extrusion molding. The parameters of the extruder are set as follows: first stage temperature 40°C, second stage temperature 50°C, third stage temperature 60°C, screw speed 45rpm, and rubber strip products of different shapes are extruded through different dies to complete the preparation of the rubber material for protecting the optical fiber head.

[0044] Example 2

[0045] (1) The raw materials of the rubber material used to protect the optical fiber head include, by weight: 85 parts of butyl rubber (IIR0745), 2.2 parts of tackifier (phenolic resin GML), 0.15 parts of chemical peptizer (pentachlorobenzenethiol SJ-103), 6 parts of carbon black, and 2.3 parts of wax additive (polyethylene wax).

[0046] (2) The steps of preparing the rubber material for protecting the optical fiber head include:

[0047] First, butyl rubber and chemical peptizer are put into an open mill for the first mixing, the mixing time is 3 minutes, and then tackifier, carbon black and wax additives are added for the second mixing, the mixing time is 5 minutes, and after the mixing is completed, the strip is produced and naturally parked for 16 hours to obtain a rubber strip;

[0048] Next, the prepared rubber strip is put into a preheated extruder for extrusion molding. The parameters of the extruder are set as follows: first stage temperature 45°C, second stage temperature 55°C, third stage temperature 65°C, and screw speed 40rpm. Rubber strip products of different shapes are extruded through different dies to complete the preparation of the rubber material for protecting the optical fiber head.

[0049] Example 3

[0050] (1) The raw materials of the rubber material used to protect the optical fiber head include, by weight: 90 parts of butyl rubber (IIR0745), 2.5 parts of tackifier (phenolic resin GML), 0.2 parts of chemical peptizer (pentachlorobenzenethiol SJ-103), 7 parts of carbon black, and 2.5 parts of wax additive (polyethylene wax).

[0051] (2) The steps of preparing the rubber material for protecting the optical fiber head include:

[0052] First, butyl rubber and chemical peptizer are put into an open mill for the first mixing, the mixing time is 4 minutes, and then tackifier, carbon black and wax additives are added for the second mixing, the mixing time is 4 minutes, and after mixing, strips are produced and naturally parked for 20 hours to obtain rubber strips;

[0053] Next, the prepared rubber strip is put into a preheated extruder for extrusion molding. The parameters of the extruder are set as follows: first stage temperature 50°C, second stage temperature 60°C, third stage temperature 80°C, screw speed 35rpm, and rubber strip products of different shapes are extruded through different dies to complete the preparation of the rubber material for protecting the optical fiber head.

[0054] Example 4

[0055] (1) The raw materials of the rubber material used to protect the optical fiber head include, by weight: 95 parts of butyl rubber (IIR0745), 2.8 parts of tackifier (phenolic resin GML), 0.25 parts of chemical peptizer (pentachlorobenzenethiol SJ-103), 8 parts of carbon black, and 2.7 parts of wax additive (polyethylene wax).

[0056] (2) The steps of preparing the rubber material for protecting the optical fiber head include:

[0057] First, butyl rubber and chemical peptizer are put into an open mill for the first mixing, the mixing time is 4 minutes, and then tackifier, carbon black and wax additives are added for the second mixing, the mixing time is 6 minutes, and after the mixing is completed, strips are produced and naturally parked for 24 hours to obtain rubber strips;

[0058] Next, the prepared rubber strip is put into a preheated extruder for extrusion molding. The parameters of the extruder are set as follows: first stage temperature 40°C, second stage temperature 60°C, third stage temperature 70°C, and screw speed 42rpm. Rubber strip products of different shapes are extruded through different dies to complete the preparation of the rubber material for protecting the optical fiber head.

[0059] Example 5

[0060] (1) The raw materials of the rubber material used to protect the optical fiber head include, by mass, 100 parts of butyl rubber (IIR0745), 3 parts of tackifier (phenolic resin GML), 0.3 parts of chemical peptizer (pentachlorobenzenethiol SJ-103), 10 parts of carbon black, and 3 parts of wax additive (polyethylene wax).

[0061] (2) The steps of preparing the rubber material for protecting the optical fiber head include:

[0062] First, butyl rubber and chemical peptizer are put into an open mill for the first mixing, the mixing time is 3 minutes, and then tackifier, carbon black and wax additives are added for the second mixing, the mixing time is 5 minutes, and after the mixing is completed, the strip is produced and naturally parked for 15 hours to obtain a rubber strip;

[0063] Next, the prepared rubber strip was put into a preheated extruder for extrusion molding. The parameters of the extruder were set as follows: first stage temperature 45°C, second stage temperature 55°C, third stage temperature 75°C, and screw speed 38rpm. Rubber strip products of different shapes were extruded through different dies to complete the preparation of the rubber material for protecting the optical fiber head.

[0064] Example 6

[0065] (1) The raw materials of the rubber material used to protect the optical fiber head include, by weight: 100 parts of butyl rubber (IIR0745), 2 parts of tackifier (phenolic resin GML), 0.1 parts of chemical peptizer (pentachlorobenzenethiol SJ-103), 9 parts of carbon black, and 2.5 parts of wax additive (polyethylene wax).

[0066] (2) The steps of preparing the rubber material for protecting the optical fiber head include:

[0067] First, butyl rubber and chemical peptizer are put into an open mill for the first mixing, the mixing time is 3 minutes, and then tackifier, carbon black and wax additives are added for the second mixing, the mixing time is 5 minutes, and after the mixing is completed, the strip is produced and naturally parked for 15 hours to obtain a rubber strip;

[0068] Next, the prepared rubber strip was put into a preheated extruder for extrusion molding. The parameters of the extruder were set as follows: first stage temperature 45°C, second stage temperature 55°C, third stage temperature 75°C, and screw speed 38rpm. Rubber strip products of different shapes were extruded through different dies to complete the preparation of the rubber material for protecting the optical fiber head.

[0069] Example 7

[0070] (1) The raw materials of the rubber material used to protect the optical fiber head include, by weight: 92 parts of butyl rubber (IIR0745), 2.1 parts of tackifier (phenolic resin GML), 0.27 parts of chemical peptizer (pentachlorobenzenethiol SJ-103), 8 parts of carbon black, and 2.5 parts of wax additive (polyethylene wax).

[0071] (2) The steps of preparing the rubber material for protecting the optical fiber head include:

[0072] First, butyl rubber and chemical peptizer are put into an open mill for the first mixing, the mixing time is 3 minutes, and then tackifier, carbon black and wax additives are added for the second mixing, the mixing time is 6 minutes, and after the mixing is completed, the strip is produced and naturally parked for 14 hours to obtain a rubber strip;

[0073] Next, the prepared rubber strip is put into a preheated extruder for extrusion molding. The parameters of the extruder are set as follows: first stage temperature 45°C, second stage temperature 55°C, third stage temperature 70°C, and screw speed 40rpm. Rubber strip products of different shapes are extruded through different dies to complete the preparation of the rubber material for protecting the optical fiber head.

[0074] Example 8

[0075] (1) The raw materials of the rubber material used to protect the optical fiber head include, by weight: 88 parts of butyl rubber (IIR0745), 2 parts of tackifier (phenolic resin GML), 0.1 parts of chemical peptizer (pentachlorobenzenethiol SJ-103), 10 parts of carbon black, and 2.9 parts of wax additive (polyethylene wax).

[0076] (2) The steps of preparing the rubber material for protecting the optical fiber head include:

[0077] First, butyl rubber and chemical peptizer are put into an open mill for the first mixing, the mixing time is 4 minutes, and then tackifier, carbon black and wax additives are added for the second mixing, the mixing time is 5 minutes, and after the mixing is completed, the strip is produced and naturally parked for 18 hours to obtain a rubber strip;

[0078] Next, the prepared rubber strip is put into a preheated extruder for extrusion molding. The parameters of the extruder are set as follows: first stage temperature 45°C, second stage temperature 50°C, third stage temperature 65°C, and screw speed 40rpm. Rubber strip products of different shapes are extruded through different dies to complete the preparation of the rubber material for protecting the optical fiber head.

[0079] The rubber material for protecting the optical fiber head prepared in the embodiment of the present invention (hereinafter referred to as butyl rubber) was used as a test example, and natural rubber and silicone rubber were used as comparative examples to test the ability of different rubber-coated optical fibers to withstand the weight of the weight. The specific test method and results are as follows:

[0080] Use rubber film to cover the optical fiber line and then fix it. Apply weights to the optical fiber line and pull it vertically for 5 minutes at room temperature. If the optical fiber line does not move, it passes. If 10 consecutive samples pass, it is considered qualified and recorded as "OK". If the optical fiber line moves, it does not pass and is considered unqualified and recorded as "NG".

[0081] The test results of the weight data of optical fibers coated with different types of glue that can withstand weights are shown in Table 1 below.

[0082] Table 1 Comparison of weights of optical fibers coated with different types of adhesive

[0083] Material 100g weight 300g weight 500g weight Natural rubber OK OK NG Silicone Rubber OK NG NG Butyl rubber OK OK OK

[0084] It can be seen from the comparison results in Table 1 above that the butyl rubber material prepared in the embodiment of the present invention can withstand a heavier weight after coating the optical fiber, which means that the butyl rubber material provided by the present invention is not prone to sliding, falling off, etc. when used to protect the optical fiber head, and has a better protective effect on the optical fiber.

[0085] The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. For those skilled in the art, the present invention may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the patent protection scope of the present invention.

Claims

1. A rubber material for protecting an optical fiber head, characterized in that: The rubber material for protecting the optical fiber head comprises the following raw materials in parts by mass: 80-100 parts of butyl rubber, 2-3 parts of tackifier, 0.1-0.3 parts of chemical peptizer, 5-10 parts of carbon black and 2-3 parts of wax additive.

2. The rubber material for protecting an optical fiber head according to claim 1, characterized in that: The tackifier includes a phenolic resin.

3. The rubber material for protecting an optical fiber head according to claim 1, characterized in that: The chemical peptizer includes pentachlorothiophenol.

4. The rubber material for protecting an optical fiber head according to claim 1, characterized in that: The wax additive includes polyethylene wax.

5. A method for preparing a rubber material for protecting an optical fiber head according to any one of claims 1 to 4, characterized in that: The following steps are involved: Step S10, firstly putting butyl rubber and chemical peptizer into an open mill for first mixing, and then adding tackifier, carbon black and wax additives for second mixing, and after mixing, forming strips and naturally resting to obtain rubber strips; Step S20, putting the rubber strip into an extruder for extrusion molding to obtain a rubber material for protecting an optical fiber head.

6. The method for preparing the rubber material for protecting the optical fiber head according to claim 5, characterized in that: In step S10: The mixing time of the first mixing is 2 to 4 minutes.

7. The method for preparing the rubber material for protecting the optical fiber head according to claim 5, characterized in that: In step S10: The mixing time of the second mixing is 4 to 6 minutes.

8. The method for preparing the rubber material for protecting the optical fiber head according to claim 5, characterized in that: In step S10: The natural parking time is 12 to 24 hours.

9. The method for preparing the rubber material for protecting the optical fiber head according to claim 5, characterized in that: In step S20: The parameters of the extruder are set as follows: first stage temperature 40-50°C, second stage temperature 50-60°C, third stage temperature 60-80°C, and screw speed 35-45 rpm.

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