CN111427125A - A kind of anti-rat bite butterfly optical cable - Google Patents

Abstract

The invention belongs to the field of optical cables, and in particular relates to an anti-rat biting butterfly optical cable. It includes: a sheath and a core cable; the sheath wraps and fixes the core cable, and the outer surface of the sheath is provided with a high-viscosity layer; the high-viscosity layer is formed of high-viscosity glue, and the high-viscosity glue is An organic adhesive system containing synthetic capsaicin; the high-viscosity layer is covered with anti-aging skin. The anti-rat biting butterfly optical cable of the invention has good anti-rat biting effect; the anti-rat biting effect lasts for a long time, and the service life is long; it is environmentally friendly, non-toxic and harmless.

Description

A kind of anti-rat bite butterfly optical cable

technical field

The invention belongs to the field of optical cables, in particular to an anti-rat-bite butterfly optical cable.

Background technique

With the development of the communication industry, the use of optical cables has become more and more popular and has gradually become the standard of people's daily life, and the protection requirements of optical cables are different in different use environments.

For example, when used in a marine environment, the optical cable needs to have good moisture and water resistance, and a certain strength to support it to avoid the problem of insufficient strength and breakage after long-term exposure to moisture in the natural environment; another example is in areas with strong wind. , the optical cable needs to have better anti-twisting ability to prevent irreparable twisting damage caused by long-term strong wind.

In areas with more serious rodent damage, there are unique protection requirements for optical cables, that is, optical cables need to have good anti-rat bite ability. Because in the worst-hit areas of rat bites, the optical cable is often bitten by rodents, which brings great difficulties to line maintenance, and is due to environmental protection and operability reasons. The anti-rodent measures can not take measures such as poisoning and trapping, so the optical cable with anti-rodent function has become the first choice of various traffic operators.

However, the existing rodent-bite-proof optical cables generally have certain defects. For example, the rodent-bite-proof optical cable of physical method is mostly used to improve the strength of the sheath and armor layer to improve the anti-rodent bite performance of the rodent-biting optical cable, but its improvement is relatively limited, and it is still easy to produce in the long-term service process. Rat bite damage, and the use of synthetic capsaicin and other chemical methods to prevent rodent bite optical cables, there is a common problem that the chemical components are easy to diffuse and volatilize, resulting in short duration of anti-rat bite performance, and it is easy to cause environmental pollution. , has a certain toxic effect on the environment.

SUMMARY OF THE INVENTION

In order to solve the problem that the existing anti-rodent-bite optical cable has limited performance, or there is limited anti-rodent-bite performance, it is still prone to damage during long-term service, or there is an excellent short-term anti-rodent bite effect, but the anti-rodent bite performance lasts for a short time, etc. Problem, the present invention provides an anti-rat bite butterfly optical cable. The purpose of the present invention is as follows: 1. It can produce a good anti-rat bite effect; 2. The combination of physical method and chemical method can produce a lasting anti-rat bite effect; 3. The whole composition is non-toxic and harmless, and is environmentally friendly.

In order to achieve the above objects, the present invention adopts the following technical solutions.

An anti-rat bite butterfly optical cable, comprising:

Sheath and core cable;

The sheath wraps and fixes the core cable, and the outer surface of the sheath is provided with a high adhesive layer;

The high-viscosity adhesive layer is formed of high-viscosity adhesive, and the high-viscosity adhesive is an organic adhesive system containing synthetic capsaicin;

The high-viscosity layer is covered with anti-aging skin.

As a preference,

The sheath is a butterfly sheath, and the outer wall is provided with symmetrical grooves that are symmetrical to each other;

Taking the connecting line of the symmetrical recesses as the symmetrical line, relatively symmetrical reinforcing members are arranged inside the sheath.

As a preference,

The reinforcing member is a FRP material reinforcing member.

As a preference,

The components of the high-viscosity glue include:

4-5 parts by weight of synthetic capsaicin, 15-25 parts by weight of DC191 resin, 20-28 parts by weight of butyl rubber, 0.3-0.5 parts by weight of 2,5-di-tert-butyl-p-phenol, 6-8 parts by weight of oxidized polyethylene wax parts, 35-55 parts by weight of white oil and 3-8 parts by weight of hydrogenated SBS.

As a preference,

A core cavity is arranged inside the sheath, and the core cable is arranged in the core cavity;

The core cable is composed of non-woven wrapping tape wrapping the optical fiber.

As a preference,

The outer surface of the core cable is coaxially coated with an inner armor layer;

The inner armor layer is elliptical, the inner walls at both ends of the short axis are tangent to the outer wall of the core cable, and the outer walls at both ends of the long axis are tangent to the inner wall of the sheath core cavity.

As a preference,

The inner armor layer is made of GFRP material.

As a preference,

The side wall of the core cavity is provided with a rigid strip corresponding to the reinforcing member;

The cross section of the rigid strip is arched, and the arch is convex toward the reinforcing member.

The beneficial effects of the present invention are:

1) It has a good anti-rat bite effect;

2) The anti-rat bite effect lasts for a long time and the service life is long;

3) Environmentally friendly, non-toxic and harmless.

Description of drawings

Fig. 1 is the structural representation of the present invention;

FIG. 2 is an enlarged schematic view of part A in FIG. 1 .

In the picture: 1 sheath, 101 core cavity, 102 high adhesive layer, 103 anti-aging skin, 104 rigid strip, 2 core cable, 201 non-woven wrapping tape, 202 optical fiber, 3 reinforcing member, 4 inner armor layer.

Detailed ways

The present invention will be further described and described in detail below with reference to specific embodiments and accompanying drawings. Those of ordinary skill in the art will be able to implement the present invention based on these descriptions. In addition, the embodiments of the present invention referred to in the following description are generally only some embodiments of the present invention, not all of the embodiments. Therefore, based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

Unless otherwise specified, the raw materials used in the embodiments of the present invention are commercially available or available to those skilled in the art; unless otherwise specified, the methods used in the embodiments of the present invention are all methods mastered by those skilled in the art.

Example

A rodent-bite-proof butterfly optical cable as described in Figures 1 to 2, comprising:

Sheath 1, core cable 2 and reinforcing member 3;

The cross section of the sheath 1 is butterfly-shaped, that is, a rounded rectangle with a symmetrical groove in the middle of the two sides of the symmetry or an ellipse correspondingly with a symmetrical groove at the end point of the short axis. The rounded rectangle is used as an example in this embodiment. For description, the up, down, left and right in this embodiment refer to the up, down, left and right in the drawings of the specification, and the vertical direction is the up and down direction in the figure, and the horizontal direction is the left and right direction in the figure. ;

The geometric center of the sheath 1 is provided with a core cavity 101, and the core cable 2 is fixedly arranged in the core cavity 101, that is, the core cable 2 is set in the core of the sheath 1, the core cable 2 is protected and fixed, and the The sheath 1 covers the reinforcing members 3, and the reinforcing members 3 are arranged in pairs on both sides of the core cable 2, at the geometric center of the "head" parts at both ends of the sheath 1, and the connecting lines of the reinforcing members 3 on both sides of the core cable 2 The lengths of the connecting lines passing through the center of the core cable 2, the reinforcing members 3 on both sides to the center of the core cable 2 are equal, and the connecting lines of the reinforcing members 3 on both sides of the core cable 2 are perpendicular to the connecting lines at the bottom of the symmetrical groove on the sheath 1;

The reinforcing member 3 is a FRP material, that is, a fiber-reinforced composite material. The reinforcing member 3 used in this embodiment is a GFRP material. The GFRP material not only has the common characteristics of the FRP material, but also can effectively improve the specific strength, specific modulus, and resistance of the overall optical cable. Corrosive and provide long service life and achieve lightweight, etc., it is set in the geometric center of the "head" at both ends of the sheath 1, which is one of the parts most vulnerable to rat bite damage, GFRP material is glass because it is The base fiber reinforced composite material retains certain characteristics of glass fiber. After the mouse bites, the glass fiber will penetrate into the mouse's mouth, causing some slight damage to the mouse's mouth and causing the mouse to have a strong sense of discomfort, and then stop Therefore, using it as the material of the reinforcing member 3 can reduce the harm of rat bites to the optical cable to a certain extent;

The outer surface of the sheath 1 is provided with a high-viscosity adhesive layer 102, which coats the outer surface of the sheath 1 with the high-viscosity adhesive by brushing, spraying or co-extrusion, and is provided with an anti-aging layer on the high-viscosity adhesive layer 102. The skin 103 is used to retain water for the high-viscosity adhesive and maintain the viscosity of the high-viscosity adhesive;

The anti-aging skin 103 is covered by a heat shrinkable tube that shrinks by heat;

By setting the high adhesive layer 102, the resistance of the mouse to bite the optical cable can be greatly improved, making it difficult or even impossible for the mouse to bite the optical cable. Information exchange, so that it reduces the interest in biting the optical cable, so as to achieve a certain anti-rat bite effect.

The high-viscosity glue is preferably equipped with the following formula:

4-5 parts by weight of synthetic capsaicin, 15-25 parts by weight of DC191 resin, 20-28 parts by weight of butyl rubber, 0.3-0.5 parts by weight of 2,5-di-tert-butyl-p-phenol, 6-8 parts by weight of oxidized polyethylene wax parts, 35-55 parts by weight of white oil and 3-8 parts by weight of hydrogenated SBS;

In this example, 5 parts by weight of synthetic capsaicin, 25 parts by weight of butyl rubber, 0.5 parts by weight of 2,5-di-tert-butyl-p-phenol, 6.5 parts by weight of oxidized polyethylene wax, 48 parts by weight of white oil and 5 parts by weight of hydrogenated SBS were selected. The proportion by weight is prepared by first heating the white oil to above 150 ° C and adding hydrogenated SBS, after mixing, adding 2,5-di-tert-butyl-p-phenol and oxidized polyethylene wax and maintaining the system temperature above 150 ° C. Stirring Mix well, then add butyl rubber and DC191 resin and stir until completely melted and mixed, cool down to below 80°C, then add synthetic capsaicin, stir and mix well and discharge to obtain high-viscosity glue, and the prepared high-viscosity glue is co-extruded. The way out is covered on the outer surface of the sheath 1;

The high-viscosity adhesive of the above components has good anti-aging properties, and can maintain 95% or more of the viscosity when exposed to air to reach 40-45 d, and can maintain at least 5 d when the anti-aging skin 103 formed by the outer heat shrinkable tube is not damaged. More than 90% annual viscosity;

The core cable 2 is composed of a number of optical fibers 202 covered by a non-woven wrapping tape 201, and the non-woven wrapping tape 201 wraps the optical fibers 202 into a bundle, which is the core cable 2;

As shown in FIG. 2 , the core cable 2 is coaxially coated with an oval inner armor layer 4 on the outer surface;

The inner walls at both ends of the short axis of the elliptical inner armor layer 4 are tangent to the outer wall of the core cable 2, and the outer walls at both ends of the long axis are tangent to the inner wall of the core cavity 101 of the sheath 1, and the inner armor layer 4 also adopts GFRP material for preparation;

The inner armor layer 4 made of GFRP material has good strength and high initial modulus, which directly improves the bending resistance, compression resistance and anti-rat bite performance of the core cable 2. As the outer layer, it is directly wrapped on the outside of the core cable 2, as the last guarantee for protecting the core cable 2.

The long axis of the elliptical inner armor layer 4 is perpendicular to the connecting line of the reinforcing members 3 at both ends, that is, as shown in the figure, the two reinforcing members 3 are symmetrically arranged on the upper and lower ends of the core cable 2, and the inner armor layer The inner wall at the upper and lower vertices of 4 is tangent to the outer wall of the core cable 2, and the outer wall at the left and right vertices is tangent to the inner wall of the core cavity 101 of the sheath 1. Due to the structural characteristics of the butterfly optical cable, its longitudinal force has little influence on the core cable 2. , and under the action of the reinforcing member 3, it is extremely difficult to directly act on the core cable 2, and in the lateral force, the butterfly optical cable has certain defects, and the lateral force is easily transmitted and directly acts on the core cable 2, The optical fiber 202 in the core cable 2 is damaged, and by arranging the elliptical inner armor layer 4 in the above-mentioned manner, the lateral force can be effectively dispersed. When the lateral force acts, the long axis of the inner armor layer 4 Shorten and lengthen the short axis, so as to absorb and buffer the external force, and avoid the direct effect of the external force on the core cable 2;

In addition, the use of non-metallic GFRP material as the material of the inner armor layer 4 also has a good performance in maintaining the bendability of the optical cable, will not have a significant adverse effect on the normal laying of the optical cable, and can also avoid the optical cable to a certain extent. damage.

The sidewall of the core cavity 101 of the sheath 1 is provided with a rigid strip 104 corresponding to each reinforcing member 3, and the rigid strip 104 is made of any one of CFRP, BFRP and AFRP materials.

As shown in FIG. 2 , the rigid strip 104 has an arch-shaped cross-section, and the arch protrudes toward the reinforcing member 3. When the optical cable is subjected to longitudinal force and is pressed against the core cable 2, the rigid strip 104 can further realize buffering and reduce the force. It is more uniformly dispersed on the inner armor layer 4 and then acts on the core cable 2 to ensure that the overall optical cable has a better anti-extrusion effect of external force.

The anti-rat bite performance test is carried out on the anti-rat biting butterfly optical cable of the present invention, and the damage degree of the whole optical cable is observed through the test, wherein the thickness of the high-viscosity layer 102 is about 0.6 mm.

Compared with GYTY53 structured optical cable, GYTS53 structured optical cable, filler type rodent-proof optical cable and commercially available GFRP sheathed 1 optical cable, the test and comparison results are shown in Table 1 below. Jun Hao, Ye Yun, et al. Effects of rodent repellent fillers on the properties of anti-squirrel-bite coatings for optical cables [J]. Guangdong Chemical Industry, 2016, 43(18): 59-60.] Preparation.

Table 1: Test results and comparison of anti-rat bite performance

The test method was carried out in accordance with the test method described in [Qin Ning. Research and application of anti-rat optical cable [J]. China New Communication, 2012, 000(016): 54-55.], and the ten samples in each group were increased to 20 samples.

From the above results, it can be clearly seen that the anti-rat biting butterfly optical cable of the present invention has a very excellent anti-rat biting effect, and can effectively inhibit rat biting under the dual stimulation of synthetic capsaicin and GFRP. And except for the anti-rat-biting butterfly-shaped optical cable of the present invention, no mice died in the other groups and their body weights were kept well. The average weight loss of mice in the optical fiber cable test group was 10.6%, and it was observed that the mice had a certain degree of inflammation in the oral cavity.

On the basis of the above, the experiment was improved to carry out the starvation test. That is, on the basis of the above test method, the test was carried out without feeding the diet, and the test results are shown in Table 2 below.

Table 2: Starvation Results and Comparison

Through the starvation test method, it can be clearly seen that the anti-rat-bite butterfly optical cable of the present invention has more excellent and outstanding performance compared with the existing anti-rat optical cable, and has a very good effect in preventing rat-bite.

In addition, also referring to the test method of the non-starvation method, the anti-rat-bite butterfly optical cable of the present invention was aged in the cooperation institution of the school-level unit, and the performance before and after the aging was compared. The aging conditions are:

Put the anti-rat bite butterfly optical cable in the DF-27 multi-purpose corrosion test box for 120h salt spray test. 80cm2·h, the spraying method is continuous spraying, and the humidity in the corrosion test chamber is kept at 94±4%.

The test and comparison results are shown in Table 3 below.

Table 3: Performance comparison before and after aging

From the test results in Table 3 above, it can be clearly seen that the anti-rat-bite butterfly optical cable of the present invention still has good anti-rat biting ability after long-term salt spray aging, has good weather resistance, and meets the needs of long-term use.

Claims (8)

1. A butterfly-shaped optical cable is prevented that mouse bites, its characterized in that includes:

a sheath and a core cable;

the sheath coats and fixes the core cable, and a high-viscosity adhesive layer is arranged on the outer surface of the sheath;

the high-viscosity glue layer is formed by high-viscosity glue, and the high-viscosity glue is an organic glue system containing synthetic capsaicin;

and the high-viscosity adhesive layer is coated with anti-aging skin.

2. The rodent-resistant butterfly-shaped optical cable according to claim 1,

the sheath is a butterfly-shaped sheath, and symmetrical sinking grooves which are symmetrical to each other are formed in the outer wall of the sheath;

the connecting line of the symmetrical concave grooves is taken as a symmetrical line, and symmetrical reinforcing components are arranged in the sheath.

3. The rodent-resistant butterfly-shaped optical cable according to claim 2,

the reinforcing member is an FRP material reinforcing member.

4. The rodent-resistant butterfly-shaped optical cable according to claim 1,

the high-viscosity glue comprises the following components:

4-5 parts of synthetic capsaicin, 15-25 parts of DC191 resin, 20-28 parts of butyl rubber, 0.3-0.5 part of 2, 5-di-tert-butyl-p-phenol, 6-8 parts of oxidized polyethylene wax, 35-55 parts of white oil and 3-8 parts of hydrogenated SBS.

5. The rodent-resistant butterfly-shaped optical cable according to claim 1,

a core cavity is arranged in the sheath, and the core cable is arranged in the core cavity;

the core cable is formed by wrapping optical fibers with non-woven fabric wrapping tapes.

6. A rodent-resistant butterfly-shaped optical cable according to claim 1 or 5,

the outer surface of the core cable is coaxially wrapped with an inner armor layer;

the inner armor layer is in an oval shape, the inner walls of the two ends of the short axis of the inner armor layer are tangent to the outer wall of the core cable, and the outer walls of the two ends of the long axis of the inner armor layer are tangent to the inner wall of the core cavity of the sheath.

7. The rodent-resistant butterfly-shaped optical cable according to claim 6,

the inner armor layer is made of GFRP material.

8. The rodent-resistant butterfly-shaped optical cable according to claim 5,

the side wall of the core cavity is provided with a rigid strip corresponding to the reinforcing member;

the cross section of the rigid strip is arched, and the arch is convex towards the reinforcing member.

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