CN113774664B - Water-blocking yarn, preparation method thereof and application thereof in optical cable and optical fiber sleeve - Google Patents
Water-blocking yarn, preparation method thereof and application thereof in optical cable and optical fiber sleeve Download PDFInfo
- Publication number
- CN113774664B CN113774664B CN202111098236.XA CN202111098236A CN113774664B CN 113774664 B CN113774664 B CN 113774664B CN 202111098236 A CN202111098236 A CN 202111098236A CN 113774664 B CN113774664 B CN 113774664B
- Authority
- CN
- China
- Prior art keywords
- water
- expansion layer
- polyester long
- parts
- absorbing expansion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/263—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/44384—Means specially adapted for strengthening or protecting the cables the means comprising water blocking or hydrophobic materials
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/4459—Ducts; Conduits; Hollow tubes for air blown fibres
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/32—Polyesters
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention relates to the technical field of optical cables, and provides a water-blocking yarn, a preparation method thereof and application thereof in an optical cable optical fiber sleeve. The water absorption expansion layer is formed by utilizing acrylic acid, sodium hydroxide, calcium salt, magnesium salt and the like, the water absorption expansion layer is mainly of a cross-linked network structure formed by water absorption resin, sodium, magnesium and calcium ions are arranged in the water absorption resin network structure, and osmotic pressure is formed by utilizing the ion concentration difference between the inside of the water absorption resin cross-linked network structure and external liquid, so that the initial water absorption rate is accelerated, and the expansion height is improved. The water-blocking yarn material provided by the invention does not contain grease or hydrogen ions, is placed in an optical fiber sleeve of an optical cable for blocking water, can protect the optical fiber from being influenced by a water peak value, ensures that the structure extra length of the optical fiber in the sleeve is not influenced by laying bending, ensures that a transmission signal of the optical fiber cable is not attenuated for a long time, and has excellent signal transmission quality, no grease in the optical cable structure, good environmental friendliness and light weight.
Description
Technical Field
The invention relates to the technical field of optical cables, in particular to a water-blocking yarn, a preparation method thereof and application thereof in an optical cable optical fiber sleeve.
Background
An optical fiber cable is a telecommunications cable consisting of two or more glass or plastic optical fiber cores, which are located in a protective covering, covered by a plastic PVC outer sleeve, and which perform signal transmission along an inner optical fiber. With the rapid development of global information technology, optical fiber cables used as information transmission carriers are also developed in the direction of high capacity and high transmission, the optical fiber is being transformed from single-film optical fiber to multi-film optical fiber, and meanwhile, the material for protecting the optical fiber also needs to be iterated synchronously with a new structure.
As is well known, water is most avoided for optical fibers because water can cause water peak attenuation of the optical fibers, optical fiber micro-cracking can be further aggravated through an electrochemical action, the risk of breakage is increased, and if the water is not controlled, the water can also migrate into a joint box along the longitudinal direction of a cable core, so that a potential danger is caused to a communication system. In the production process of the optical cable, the water blocking material is wrapped outside the cable core of the optical cable, and when the optical cable is invaded by moisture or moisture, the water blocking material can absorb the moisture to achieve the purpose of blocking water. The traditional water-blocking material in the field is petroleum jelly, but the petroleum jelly has the defects of large filling amount, high cost, easy environmental pollution, difficult cleaning and the like, and the dead weight of the optical cable is too heavy, so that the requirements of high-capacity and high-transmission optical fiber and optical cables are not met.
Currently, water blocking of optical fiber sleeves of optical cables is being changed from petroleum jelly water blocking to non-oily material water blocking. The water-blocking yarn is a novel water-blocking material which is newly developed internationally at present, and the traditional water-blocking yarn is a yarn-shaped water-blocking material which is formed by blending and warp knitting water-absorbing fibers and polyester fibers. However, the existing water-blocking yarns have the problems of low water absorption rate, low expansion height and unsatisfactory water-blocking effect, and the transmission signal attenuation rate of the optical fiber cable is high in long-term use.
Disclosure of Invention
In view of the above, the present invention provides a water-blocking yarn, a method for preparing the same, and an application of the same in an optical fiber sleeve of an optical cable. The water-blocking yarn provided by the invention has the advantages of high water absorption rate, high expansion height and excellent water-blocking effect, and can ensure that the transmission signal of the optical fiber cable is not attenuated for a long time and the signal transmission quality is excellent when the water-blocking yarn is applied to the optical fiber cable.
In order to achieve the above object, the present invention provides the following technical solutions:
a water-blocking yarn comprises polyester long fibers, a water-absorbing expansion layer coated on the surfaces of the polyester long fibers and an acrylate water-based emulsion layer coated on the surfaces of the water-absorbing expansion layer;
the preparation raw materials of the water-absorbing expansion layer comprise the following components in parts by weight: 100-200 parts of water, 50-100 parts of acrylic acid, 50-75 parts of sodium hydroxide, 2-30 parts of magnesium salt, 2-21 parts of calcium salt, 2-10 parts of foaming agent, 1-10 parts of dispersing agent, 0.1-4 parts of cross-linking agent and 0.1-5 parts of initiator.
Preferably, the magnesium salt comprises one or both of magnesium chloride and magnesium acetate; the calcium salt comprises one or two of calcium chloride and calcium acetate.
Preferably, the foaming agent is sodium bicarbonate, and the dispersing agent is fumed silica.
Preferably, the cross-linking agent comprises one or two of polyethylene glycol diacrylate and N, N-methylene acrylamide; the initiator comprises one or more of sodium persulfate, potassium persulfate, hydrogen peroxide and ascorbic acid.
The invention also provides a preparation method of the water-blocking yarn in the scheme, which comprises the following steps:
mixing water, acrylic acid, sodium hydroxide, magnesium salt, calcium salt, a foaming agent, a dispersing agent, a cross-linking agent and an initiator to obtain a synthetic liquid of a water-absorbing expansion layer;
carrying out first dipping on polyester long fibers in the synthetic liquid of the water-absorbing expansion layer, heating and polymerizing to form the water-absorbing expansion layer on the surface of the polyester long fibers to obtain the polyester long fibers coated with the water-absorbing expansion layer;
and mixing acrylic acid aqueous latex and water to obtain aqueous latex, and performing second impregnation on the polyester long fiber coated with the water-absorbing expansion layer in the aqueous latex and drying to obtain the water-blocking yarn.
Preferably, the first dipping time is 1-19 seconds; the mass ratio of the polyester long fibers to the synthetic liquid of the water-absorbing expansion layer is 10-100: 1-3; the mass of the water-absorbing swelling synthetic fluid is calculated according to the mass of the polyester long fibers stuck and hung after the first impregnation.
Preferably, the heating polymerization temperature is 150-220 ℃, and the time is 0.1-3 min.
Preferably, the mass ratio of the acrylate water-based emulsion to water is 0.5-1: 10-16.5;
the second dipping time is 1-10 seconds;
the mass ratio of the polyester long fibers coated with the water-absorbing expansion layer to the water-based glue solution is 7: 0.2-0.5; the mass of the aqueous glue solution is measured by the mass of the polyester long fiber coated with the water absorption expansion layer after the second impregnation.
Preferably, the drying temperature is 100-140 ℃ and the drying time is 0.1-1 min.
The invention also provides application of the water-blocking yarn in the scheme or the water-blocking yarn prepared by the preparation method in the scheme in an optical cable and optical fiber sleeve.
The invention provides a water-blocking yarn, which comprises polyester long fibers, a water-absorbing expansion layer and an acrylate water-based emulsion layer, wherein the water-absorbing expansion layer is coated on the surfaces of the polyester long fibers; the preparation raw materials of the water-absorbing expansion layer comprise the following components in parts by weight: 100-200 parts of water, 50-100 parts of acrylic acid, 50-75 parts of sodium hydroxide, 2-30 parts of magnesium salt, 2-21 parts of calcium salt, 2-10 parts of foaming agent, 1-10 parts of dispersing agent, 0.1-4 parts of cross-linking agent and 0.1-5 parts of initiator. According to the invention, acrylic acid, sodium hydroxide, calcium salt, magnesium salt and the like are utilized to form a water-absorbing expansion layer, the water-absorbing expansion layer is mainly of a cross-linked network structure formed by water-absorbing resin, sodium-calcium-magnesium ion positive charges capable of attracting and pairing with carboxylate negative charges are introduced into the water-absorbing resin, osmotic pressure is formed by utilizing the ion concentration difference between the inside of the water-absorbing resin cross-linked network structure and external liquid, water preferentially enters the inside of the cross-linked network structure with high ion concentration from the outside with low ion concentration, and when the water-absorbing resin meets hard water (the sodium-calcium-magnesium ions are high), the sodium-calcium-magnesium ion concentration in the water-absorbing resin cross-linked network is greater than that in the external water, so that the initial water-absorbing rate is accelerated, and the expansion height is improved.
The invention also provides a preparation method of the water-blocking yarn in the scheme, and the water-blocking yarn is prepared by firstly soaking the synthetic solution of the water-absorbing expansion layer in the polyester long fiber, then forming the water-absorbing expansion layer through heating and polymerization, then soaking the water-based glue solution and drying to form the acrylate water-based latex layer. The preparation method provided by the invention has simple steps and is easy to operate.
The invention also provides application of the water-blocking yarn in the scheme in an optical cable optical fiber sleeve. The water-blocking yarn material provided by the invention does not contain grease or hydrogen ions, is placed in an optical fiber sleeve of an optical cable for blocking water, can protect the optical fiber from being influenced by a water peak value, ensures that the structure extra length of the optical fiber in the sleeve is not influenced by laying bending, ensures that a transmission signal of the optical fiber cable is not attenuated for a long time, and has excellent signal transmission quality, no grease in the optical cable structure, good environmental friendliness and light weight.
Detailed Description
The invention provides a water-blocking yarn which comprises polyester long fibers, a water-absorbing expansion layer and an acrylate water-based emulsion layer, wherein the water-absorbing expansion layer is coated on the surfaces of the polyester long fibers, and the acrylate water-based emulsion layer is coated on the surfaces of the water-absorbing expansion layer.
The water-blocking yarn provided by the invention comprises polyester long fibers. In the invention, the modulus of the polyester long fiber is preferably more than or equal to 97cN/DTEX, the shrinkage rate after heating for 10min at 177 ℃ is preferably less than 3%, the length of the polyester long fiber is preferably 150-1000 DTEX, more preferably 200-800 DTEX, the linear density is preferably 10000-50000 m/kg, more preferably 20000-40000 m/kg, the polyester long fiber used in the invention is fine yarn, the linear density is higher, the roving with higher linear density (500-3000 m/kg) is used as the raw material in the traditional water-blocking yarn, the roving absorbs more expansion components, the better water absorption performance can be ensured, but the yarn is heavier, the spun yarn is used as the raw material in the invention, and the water-blocking yarn with good water absorption performance, fast speed and light weight can be obtained by combining the expansion components of the invention.
The water-blocking yarn provided by the invention comprises a water-absorbing expansion layer coated on the surface of the polyester long fiber. In the invention, the water-absorbing expansion layer is prepared from the following raw materials: 100-200 parts of water, preferably 130-200 parts; 50-100 parts of acrylic acid, preferably 60-80 parts; 50-75 parts of sodium hydroxide, preferably 55-70 parts; 2-30 parts of magnesium salt, preferably 5-25 parts; 2-21 parts of calcium salt, preferably 5-15 parts; 2-10 parts of foaming agent, preferably 3-8 parts; 1-10 parts of a dispersing agent, preferably 2-8 parts; 0.1-4 parts of a cross-linking agent, preferably 1-3 parts; 0.1-5 parts of initiator, preferably 1-4 parts.
In the present invention, the water is preferably deionized water; the magnesium salt preferably comprises one or both of magnesium chloride and magnesium acetate; the calcium salt preferably comprises one or both of calcium chloride and calcium acetate; the foaming agent is preferably sodium bicarbonate, and the bubble agent can increase the net-shaped interval and improve the water permeability; the dispersant is preferably fumed silica; the cross-linking agent preferably comprises one or two of polyethylene glycol diacrylate and N, N-methylene acrylamide; the initiator preferably comprises one or more of sodium persulfate, potassium persulfate, hydrogen peroxide and ascorbic acid.
The water-blocking yarn provided by the invention comprises an acrylate water-based emulsion layer coated on the surface of the water-absorbing expansion layer. The invention has no special requirements on the type of the acrylate water-based latex, and the acrylate water-based latex which is well known to the technical personnel in the field can be adopted, such as VAE-707, VN960, VN65 and the like. In the invention, the acrylate water-based latex plays a role of a coating film layer and preventing moisture absorption.
In the invention, the performance indexes of the water-blocking yarn are shown in table 1:
TABLE 1 Water-blocking yarn Performance index
The invention also provides a preparation method of the water-blocking yarn in the scheme, which comprises the following steps:
mixing water, acrylic acid, sodium hydroxide, magnesium salt, calcium salt, a foaming agent, a dispersing agent, a cross-linking agent and an initiator to obtain a synthetic liquid of a water-absorbing expansion layer;
carrying out first dipping on polyester long fibers in the synthetic liquid of the water-absorbing expansion layer, heating and polymerizing to form the water-absorbing expansion layer on the surface of the polyester long fibers to obtain the polyester long fibers coated with the water-absorbing expansion layer;
and mixing acrylic acid aqueous latex and water to obtain aqueous latex, and performing second impregnation on the polyester long fiber coated with the water-absorbing expansion layer in the aqueous latex and drying to obtain the water-blocking yarn.
Mixing water, acrylic acid, sodium hydroxide, magnesium salt, calcium salt, a foaming agent, a dispersing agent, a cross-linking agent and an initiator to obtain a synthetic liquid of a water-absorbing expansion layer; the content of each component in the synthetic liquid of the water-absorbing expansion layer is consistent with the scheme, and the details are not repeated; the invention has no special requirements on the mixing method, and can uniformly mix all the components.
After the synthetic liquid of the water-absorbing expansion layer is obtained, the polyester long fiber is subjected to first immersion in the synthetic liquid of the water-absorbing expansion layer and then is heated and polymerized, and the water-absorbing expansion layer is formed on the surface of the polyester long fiber, so that the polyester long fiber coated with the water-absorbing expansion layer is obtained. In the invention, the time for the first immersion is preferably 1 to 19 seconds, and more preferably 5 to 15 seconds; the mass ratio of the polyester long fibers to the synthetic liquid of the water-absorbing expansion layer is preferably 10-100: 1-3, more preferably 20-80: 1.5-2.5, and further preferably 50-70: 2, and the mass of the synthetic liquid of the water-absorbing expansion layer is calculated by the mass of the polyester long fibers after the first impregnation and the sticking and hanging of the synthetic liquid on the polyester long fibers. The invention has no requirement on the specific volume of the synthetic liquid of the water-absorbing expansion layer adopted in the first impregnation, and the invention only needs to ensure that the quality of the synthetic liquid which is adhered to the polyester long fiber after the first impregnation meets the requirement.
In the invention, the heating polymerization temperature is preferably 150-220 ℃, more preferably 180-200 ℃, and the heating polymerization time is preferably 0.1-3 min, more preferably 0.5-2 min; the heating polymerization is preferably carried out by hot air heating in a methanol hot air furnace. In the heating polymerization process, acrylic acid forms water-absorbent resin with a cross-linked network structure under the action of a cross-linking agent and an initiator, sodium, calcium and magnesium ions are paired with carboxylate radicals in the water-absorbent resin, and a higher ion concentration is formed inside the cross-linked network structure of the water-absorbent resin. In the field, the conventional water-absorbent resin is sodium salt and potassium salt water-absorbent resin, the molecular network of the sodium salt and potassium salt water-absorbent resin is compact, the water-absorbent expansion is slow, and the water-seepage path for blocking water of the optical fiber cable is long.
After the polyester long fiber coated with the water-absorbing expansion layer is obtained, the acrylic acid aqueous emulsion and water are mixed to obtain aqueous emulsion, and the polyester long fiber coated with the water-absorbing expansion layer is subjected to second impregnation in the aqueous emulsion and then dried to obtain the water-blocking yarn. In the invention, the mass ratio of the acrylic acid water-based emulsion to water is preferably 0.5-1: 10-16.5, more preferably 0.6-0.8: 12-15; the second dipping time is preferably 1-10 seconds, and more preferably 2-8 seconds; the mass ratio of the polyester long fibers coated with the water-absorbing expansion layer to the water-based glue solution is preferably 7: and 0.2-0.5, wherein the mass of the aqueous glue solution is calculated by the mass of the polyester long fiber coated with the water-absorbing expansion layer after the second impregnation, and the specific volume of the aqueous glue solution used in the second impregnation has no special requirement as long as the mass of the polyester long fiber coated with the water-absorbing expansion layer after the second impregnation meets the requirement.
In the invention, the drying temperature is preferably 100-140 ℃, more preferably 110-130 ℃, and the drying time is preferably 0.1-1 min, more preferably 0.3-0.5 min. And after drying, rolling the finished product.
The invention also provides the application of the water-blocking yarn in the scheme or the water-blocking yarn prepared by the preparation method in the scheme in an optical cable optical fiber sleeve; in the invention, the optical cable optical fiber sleeve is specifically a full-dry optical cable optical fiber sleeve; the invention has no special requirements on the specific method for application, and the application can be realized by adopting a method well known to a person skilled in the art, such as filling the water-blocking yarn in the gap between the cable core and the sleeve.
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention.
The polyester filament used in the following examples has a length of 150 to 1000DTEX, a linear density of 10000 to 50000m/kg, and a type of acrylic ester aqueous emulsion used is VAE-707.
Example 1
Taking 200 parts of deionized water, 100 parts of acrylic acid, 75 parts of sodium hydroxide, 30 parts of magnesium chloride, 21 parts of calcium chloride, 3 parts of sodium bicarbonate, 10 parts of fumed silica, 4 parts of a cross-linking agent (polyethylene glycol diacrylate) and 5 parts of an initiator (sodium persulfate), and mixing the components to obtain a synthetic liquid of a water-absorbing expansion layer;
soaking the polyester long fibers in the synthetic liquid of the water-absorbing expansion layer for 2 seconds, wherein the mass ratio of the polyester long fibers to the synthetic liquid of the water-absorbing expansion layer stuck and hung on the polyester long fibers is 10:2, and then placing the polyester long fibers in a methanol hot air furnace for hot air heating to polymerize the synthetic liquid on the polyester long fibers, wherein the heating polymerization temperature is 220 ℃ and the heating polymerization time is 1min, so as to obtain the polyester long fibers coated with the water-absorbing expansion layer;
Mixing acrylic ester water-based latex and water according to the weight ratio of 1:10 to obtain water-based glue solution, soaking the polyester long fiber coated with the water-absorbing expansion layer in the water-based glue solution, wherein the mass ratio of the polyester long fiber coated with the water-absorbing expansion layer to the water-based glue solution stuck and hung on the polyester long fiber after soaking is 7: 0.5; and then placing the yarn in a methanol hot air furnace for heating and drying at the drying temperature of 140 ℃ for 1min, and taking up the yarn into coils to obtain the finished product of the water-blocking yarn.
Example 2
Other conditions were the same as in example 1 except that the composition of the synthetic fluid for the water-absorbent swelling layer was changed to: 150 parts of deionized water, 70 parts of acrylic acid, 60 parts of sodium hydroxide, 5 parts of magnesium acetate, 10 parts of calcium acetate, 5 parts of sodium bicarbonate, 5 parts of fumed silica, 2 parts of a crosslinking agent (N, N-methylene acrylamide) and 2 parts of an initiator (potassium persulfate).
Example 3
Other conditions were the same as in example 1 except that the composition of the synthetic fluid for the water-absorbent swelling layer was changed to: 100 parts of deionized water, 50 parts of acrylic acid, 50 parts of sodium hydroxide, 15 parts of magnesium acetate, 10 parts of calcium chloride, 3 parts of sodium bicarbonate, 6 parts of fumed silica, 0.5 part of a crosslinking agent (N, N-methylene acrylamide) and 1 part of an initiator (ascorbic acid).
Comparative example 1
Taking 200 parts of deionized water, 100 parts of acrylic acid, 50 parts of sodium hydroxide, 0.3 part of cross-linking agent (N, N-methylene acrylamide) and 0.2 part of initiator (sodium persulfate), and mixing the components to obtain sodium salt resin synthetic solution;
Soaking the polyester long fibers in a sodium salt resin synthetic solution for 2 seconds, wherein the mass ratio of the polyester long fibers to the sodium salt resin synthetic solution stuck and hung on the polyester long fibers is 10:2, then placing the polyester long fibers in a methanol hot air furnace for hot air heating to polymerize the synthetic solution on the polyester long fibers, wherein the heating polymerization temperature is 200 ℃, and the heating polymerization time is 0.2min, so as to obtain the polyester long fibers coated with the sodium salt resin layer;
mixing acrylic ester aqueous emulsion and water according to the weight ratio of 1:10 to obtain aqueous emulsion liquid, soaking the polyester long fibers coated with the sodium salt resin layer in the aqueous emulsion liquid, wherein the mass ratio of the polyester long fibers coated with the sodium salt resin layer to the aqueous emulsion liquid stuck on the polyester long fibers after soaking is 7: 0.5; and then placing the mixture in a methanol hot air furnace for heating and drying at the drying temperature of 120 ℃ for 0.2min, and taking up the mixture to obtain a finished product.
Comparative example 2
Other conditions were the same as in comparative example 1 except that sodium hydroxide was replaced with potassium hydroxide.
The physical properties of the water-blocking yarns prepared in examples 1 to 3 and comparative examples 1 to 2 were tested according to the method in the water-blocking material YD/T1115.2-2001 for the national standard communication cable and cable, and the results are shown in Table 2.
TABLE 2 physical Properties of Water-blocking yarn obtained in examples 1 to 3 and comparative examples 1 to 2
| Item | Unit of | Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 |
| Tensile strength | N | 38 | 38 | 40 | 36 | 37 |
| Elongation percentage | ％ | 15 | 16 | 18 | 15 | 16 |
| Tensile modulus | Pa | 85 | 85 | 87 | 84 | 84 |
| Rate of expansion | ml/g/30s | 60 | 56 | 52 | 14 | 15 |
| Expansion factor | ml/g/5min | 152 | 141 | 136 | 51 | 54 |
The transmission signal attenuation rates of the water-blocking yarns prepared in example 1 and comparative example 1 were tested according to GB/T15972.40-2008, and the test results are shown in Table 3.
Table 3 water absorption rate, swell height and transmission signal attenuation rate test results of the water-blocking yarn prepared in example 1 and comparative example 1
| Item | Attenuation rate of transmission signal |
| Example 1 | 0.1％ |
| Comparative example 1 | 3.0％ |
According to the data in tables 2-3, the water-blocking yarn provided by the invention has the advantages of high water absorption rate, large expansion factor and low transmission signal attenuation rate of the optical cable, and is obviously superior to the water-blocking yarns prepared in comparative examples 1-2.
The same transmission signal attenuation rate test is carried out on the water-blocking yarns prepared in the embodiments 2-3 and the comparative example 2, and the result shows that the signal attenuation rate of the water-blocking yarn prepared by the invention is obviously lower than that of the water-blocking yarn prepared by the comparative example.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The water-blocking yarn is characterized by comprising polyester long fibers, a water-absorbing expansion layer coated on the surfaces of the polyester long fibers and an acrylate water-based emulsion layer coated on the surfaces of the water-absorbing expansion layer;
the preparation raw materials of the water-absorbing expansion layer comprise the following components in parts by weight: 100-200 parts of water, 50-100 parts of acrylic acid, 50-75 parts of sodium hydroxide, 2-30 parts of magnesium salt, 2-21 parts of calcium salt, 2-10 parts of a foaming agent, 1-10 parts of a dispersing agent, 0.1-4 parts of a cross-linking agent and 0.1-5 parts of an initiator; the foaming agent is sodium bicarbonate; the linear density of the polyester long fibers is 10000-50000 m/kg;
the preparation method of the water-blocking yarn comprises the following steps:
mixing water, acrylic acid, sodium hydroxide, magnesium salt, calcium salt, a foaming agent, a dispersing agent, a cross-linking agent and an initiator to obtain a synthetic liquid of a water-absorbing expansion layer;
carrying out first dipping on polyester long fibers in the synthetic liquid of the water-absorbing expansion layer, heating and polymerizing to form the water-absorbing expansion layer on the surface of the polyester long fibers to obtain the polyester long fibers coated with the water-absorbing expansion layer;
and mixing acrylic acid aqueous latex and water to obtain aqueous latex, and performing second impregnation on the polyester long fiber coated with the water-absorbing expansion layer in the aqueous latex and drying to obtain the water-blocking yarn.
2. The water-blocking yarn of claim 1, wherein the magnesium salt comprises one or both of magnesium chloride and magnesium acetate; the calcium salt comprises one or two of calcium chloride and calcium acetate.
3. The water-blocking yarn of claim 1, wherein the dispersant is fumed silica.
4. The water-blocking yarn of claim 1, wherein the cross-linking agent comprises one or both of polyethylene glycol diacrylate and N, N-methylene acrylamide; the initiator comprises one or more of sodium persulfate, potassium persulfate, hydrogen peroxide and ascorbic acid.
5. A preparation method of the water-blocking yarn as claimed in any one of claims 1 to 4, which is characterized by comprising the following steps:
mixing water, acrylic acid, sodium hydroxide, magnesium salt, calcium salt, a foaming agent, a dispersing agent, a cross-linking agent and an initiator to obtain a synthetic liquid of a water-absorbing expansion layer;
carrying out first dipping on polyester long fibers in the synthetic liquid of the water-absorbing expansion layer, heating and polymerizing to form the water-absorbing expansion layer on the surface of the polyester long fibers to obtain the polyester long fibers coated with the water-absorbing expansion layer;
and mixing acrylic acid aqueous latex and water to obtain aqueous latex, and performing second impregnation on the polyester long fiber coated with the water-absorbing expansion layer in the aqueous latex and drying to obtain the water-blocking yarn.
6. The method according to claim 5, wherein the first immersion time is 1 to 19 seconds; the mass ratio of the polyester long fibers to the synthetic liquid of the water-absorbing expansion layer is 10-100: 1-3; the mass of the water-absorbing swelling synthetic fluid is calculated according to the mass of the polyester long fibers stuck and hung after the first impregnation.
7. The method according to claim 5, wherein the temperature of the polymerization is 150 to 220 ℃ and the time is 0.1 to 3 min.
8. The preparation method according to claim 5, wherein the mass ratio of the acrylate aqueous emulsion to water is 0.5-1: 10-16.5;
the second dipping time is 1-10 seconds;
the mass ratio of the polyester long fibers coated with the water-absorbing expansion layer to the water-based glue solution is 7: 0.2-0.5; the mass of the aqueous glue solution is measured by the mass of the polyester long fiber coated with the water absorption expansion layer after the second impregnation.
9. The method according to claim 5, wherein the drying is carried out at a temperature of 100 to 140 ℃ for 0.1 to 1 min.
10. Use of the water-blocking yarn of any one of claims 1 to 4 or the water-blocking yarn prepared by the preparation method of any one of claims 5 to 9 in an optical fiber sleeve of an optical cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111098236.XA CN113774664B (en) | 2021-09-18 | 2021-09-18 | Water-blocking yarn, preparation method thereof and application thereof in optical cable and optical fiber sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111098236.XA CN113774664B (en) | 2021-09-18 | 2021-09-18 | Water-blocking yarn, preparation method thereof and application thereof in optical cable and optical fiber sleeve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113774664A CN113774664A (en) | 2021-12-10 |
| CN113774664B true CN113774664B (en) | 2022-07-29 |
Family
ID=78852130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111098236.XA Active CN113774664B (en) | 2021-09-18 | 2021-09-18 | Water-blocking yarn, preparation method thereof and application thereof in optical cable and optical fiber sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113774664B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116971053B (en) * | 2023-09-25 | 2023-12-08 | 比音勒芬服饰股份有限公司 | High-elasticity moisture-absorbing sweat-releasing golf sportswear fabric |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1908058A (en) * | 2006-07-31 | 2007-02-07 | 福建师范大学 | Preparation method of foaming type magnesium polyacrylate imbibition resin |
| CN104177554A (en) * | 2014-08-08 | 2014-12-03 | 湖南宏禹水利水电岩土工程有限公司 | Environment-friendly acrylate grouting material as well as preparation method and application thereof |
| CN107603106A (en) * | 2017-09-22 | 2018-01-19 | 山东大学 | A kind of preparation method of three network combined hydrogel of acrylamide polyvinyl alcohol acrylic acid calcium chloride |
| CN107715661A (en) * | 2017-10-11 | 2018-02-23 | 郭迎庆 | A kind of preparation method of compound drier |
| WO2018168980A1 (en) * | 2017-03-15 | 2018-09-20 | 株式会社アドヴィックス | Method for producing friction material, and friction material |
| CN109609037A (en) * | 2018-12-05 | 2019-04-12 | 上海禹夷新材料科技有限公司 | A kind of preparation method of response type acrylates expansion glue |
| CN110468586A (en) * | 2019-08-21 | 2019-11-19 | 无锡腾华电缆材料科技有限公司 | A kind of water blocking yarn production technology and its production equipment |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111304920A (en) * | 2019-11-23 | 2020-06-19 | 深圳市鑫昌龙新材料科技股份有限公司 | Water-absorbing resin solution, preparation method and preparation method of water-blocking glass fiber yarn |
| CN112322268B (en) * | 2020-11-02 | 2023-06-30 | 中国石油天然气股份有限公司 | Stretchable slow-expansion acrylic resin and preparation process and application thereof |
| CN112630910A (en) * | 2020-12-25 | 2021-04-09 | 无锡市通达电讯附件有限公司 | Manufacturing method of water-blocking yarn for submarine optical cable |
-
2021
- 2021-09-18 CN CN202111098236.XA patent/CN113774664B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1908058A (en) * | 2006-07-31 | 2007-02-07 | 福建师范大学 | Preparation method of foaming type magnesium polyacrylate imbibition resin |
| CN104177554A (en) * | 2014-08-08 | 2014-12-03 | 湖南宏禹水利水电岩土工程有限公司 | Environment-friendly acrylate grouting material as well as preparation method and application thereof |
| WO2018168980A1 (en) * | 2017-03-15 | 2018-09-20 | 株式会社アドヴィックス | Method for producing friction material, and friction material |
| CN107603106A (en) * | 2017-09-22 | 2018-01-19 | 山东大学 | A kind of preparation method of three network combined hydrogel of acrylamide polyvinyl alcohol acrylic acid calcium chloride |
| CN107715661A (en) * | 2017-10-11 | 2018-02-23 | 郭迎庆 | A kind of preparation method of compound drier |
| CN109609037A (en) * | 2018-12-05 | 2019-04-12 | 上海禹夷新材料科技有限公司 | A kind of preparation method of response type acrylates expansion glue |
| CN110468586A (en) * | 2019-08-21 | 2019-11-19 | 无锡腾华电缆材料科技有限公司 | A kind of water blocking yarn production technology and its production equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113774664A (en) | 2021-12-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100799898B1 (en) | Superabsorbent water-resistant coatings for fiber-reinforced articles | |
| CN113774664B (en) | Water-blocking yarn, preparation method thereof and application thereof in optical cable and optical fiber sleeve | |
| CN1145177C (en) | Water resistant communications cable | |
| US20080280051A1 (en) | Low cost, high performance, flexible, water-swellable reinforcement for communications cable | |
| US5756159A (en) | Water absorbing compositions and methods of making and use thereof | |
| CA2057503A1 (en) | Strippable tight buffered optical waveguide fiber | |
| CN111172760B (en) | High-expansion-rate water-blocking yarn and production process thereof | |
| JP3086300B2 (en) | Waterproofing agent for cable | |
| CN105602169A (en) | Matix coating resin, optical fiber belt and central tube type optical fiber belt optical cable | |
| CN111607968A (en) | Manufacturing process of anti-wicking polyester filament | |
| CN104450096B (en) | Paste used for optical fiber cable and micro optical fiber cable | |
| CN103061136B (en) | Glass fiber yarn for blocking water for optical cable | |
| CN115651388A (en) | High-strength temperature-sensitive color-changing hydrogel | |
| CN210919074U (en) | Flame-retardant concrete maintenance film for tunnel engineering | |
| CN105133065B (en) | A kind of preparation method of the PEGMA/PEGDA aquagel fibres with supper-fast anisotropy water absorbing properties | |
| JPS62222214A (en) | Water proof optical fiber cable | |
| JP2698381B2 (en) | Fiber optic cable | |
| CN111764171A (en) | Phosphorus-boron compound after-finishing anti-dripping polyester fabric based on polydopamine surface modification and preparation method thereof | |
| CN105200670A (en) | Low temperature resistant nonwoven fabric | |
| KR102143136B1 (en) | Method of manufacturing superabsorbent yarn | |
| CN114369952A (en) | Super-water-absorbing expansion type water-blocking yarn for cables and optical cables and manufacturing method thereof | |
| JP2582197B2 (en) | Impermeable material | |
| JP2003535234A (en) | UV curable super absorbent coating | |
| CN116594127B (en) | Indoor and outdoor self-supporting armored butterfly-shaped lead-in optical cable | |
| CN108039244A (en) | A kind of cable insulation external application water blocking filler and manufacture method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |