The material of the protective cable

 

The invention relates to the production of protective and anticorrosive materials obtained by impregnating a fabric base is antiseptic and anti-corrosion compounds and are designed to protect cables. Material as a fabric base contains a fabric mesh tape from one or dvuhnitochnogo yarn from bast or mixed fibers with a linear density of 200-400 Tex, plain weave with reinforced edges when the ratio of the number of threads in the warp and weft per unit of length equal to 0,6-1,3-impregnated composition comprising 12-36 wt.% liquid non-volatile or low volatile low viscosity oil as filler, 2-6 wt.% the product of the interaction of amine derivatives with fatty acids or their kovovymi remains as an antiseptic and 0.2-0.5 wt.% primary or VAT amines as surfactants. New material high-tech and has a high funginertness especially when using jute fiber and impregnating composition based on transformer oil and the interaction product of triethanolamine with soap stock. 3 C.p. f-crystals, 1 table.

The invention relates to the production of protective and Antico what AV and designed to protect cables.

Known biomaterial material for protection of cables:

tape bituminaria on THE 16-91426.0052.006, commissioned in the year 1992, , Petropavlovsk, Rep. Of Kazakhstan.

The material was obtained by applying the packaging fabric molten bitumen composition is then cooled and cut into tapes of a certain width. The main characteristics of this material:

Thickness, mm to 1.3-1.5

The content of the bituminous mass % 55-65

The finished material has a non-uniform impregnation of the bitumen mass, increased thickness of the bituminous layer and a high viscosity, making it difficult to use according to the intended purpose.

Also known biomaterial material for protection of cables IBA-50-based packaging tissue patent number 2083624, Russia and THE 84-07509103.414-94, commissioned in the year 1994, Russia. This biomaterial material was obtained by impregnation of a fabric-basics solution of bitumen-polymer composition in an organic solvent (nerase) and subsequent heat treatment of the material to remove the solvent. The impregnated fabric is made on a special impregnating machine. Canvas fabric base is held at a fixed speed through the impregnating bath with a solution of bitumen-polymer compositions, wringing VA the tee in the drying chamber is provided with air intake fan a great performance. The pulling velocity of the material based on the performance of the fan and the drying chamber is not more than 5 meters per minute. The temperature in the drying chamber is 100-130C, the drying time is 6-10 minutes After impregnation of the fabric material is cut into tapes with cutting edges that go to waste up to 20% of the area of the canvas.

The disadvantages are the counterpart:

- increased fire and explosion hazards during the production of this material due to the high content in the impregnating composition nefras (over 50%) and high temperatures on the walls of the drying chamber (>150C);

- environmental degradation due to significant emissions of solvent vapours (nefras);

- high labor and energy costs when performance is poor (2-3 m/min);

significant deformation of the rolls of finished material in the storage process, which significantly reduces the shelf life of the material, makes it difficult cutting tape and leads to increased waste;

- increased viscosity and volatility characteristics of the material in different batches;

- insufficient funginertness;

the attenuation of the edges of the tape after cutting roll, which leads to deterioration of akenti.

The closest adopted for the prototype is biomaterial material for cable protection under patent No. 2131445, Russia, based on the fibrous material (creped paper), impregnated first with antiseptic solution (copper naphthenate or condensation products of polyethylenepolyamine with resin acids or synthetic fatty acids) in mineral oil coating on top of the bitumen.

At the same time as an antiseptic can be used product condensation polyethylenepolyamine with rosin, as well as mineral oil, cable oil.

Biomaterial material for the prototype is made on the following technology.

Crepe paper, in rolls, whole or cut into the reel, is impregnated with an antiseptic solution in mineral oil by unwinding the paper from the rolls or spools and passing it through an impregnating bath with pull rolls or in a closed vessel (autoclave) at a temperature of 80-150C for 0.5 to 24 h, depending on the diameter and width of the paper roll and the viscosity of the composition. Then remove excess impregnating composition from the paper rolls by release of the centrifuge. Crepe paper impregnated with a solution of antiseptics is I on both sides of bitumen melt.

The disadvantages of the prototype are:

the small thickness and low physical and mechanical properties: strength, durability, moisture resistance and, consequently, limited the use of this protective material only in a protective cushion between the metal shell and steel armor cable;

- high energy consumption during the impregnation of the material;

- presence of significant waste when cutting rolls of material on tape.

An object of the invention is to develop a universal security cable fibrous material on the basis of internal (pillow) and the outer protective cover cable impregnated filler with additives, is not inferior to the prototype of gribomont, but more durable, wear-resistant and water-resistant, providing high-quality impregnated material and protective cover cable on its basis at a minimum cost of raw materials, energy, labor costs and the absence of waste.

The technical result is achieved by the fact that, as the fibrous basis using aerated fabric tape from one or dvuhnitochnogo yarn from bast or mixed fibers with a linear density of 200-400 Tex, plain weave with us filler use liquid non-volatile or low volatile low viscosity petroleum products, as an antiseptic, a product of the interaction of amine derivatives with fatty acids or their kovovymi residues and as surfactants, primary or distillation amines in the following ratio, wt.%:

Filler 12-36

Antiseptic 2-6

Surfactant 0,2-0,5

Tape the Rest of it

Common features of the prototype and the proposed technical solutions are the presence of a fibrous base, impregnated with a liquid non-volatile or low volatile petroleum products (mineral oil) with antiseptic - product of the condensation of the amine derivative (polyethylenepolyamine) with synthetic fatty acids.

At the same time, the proposed material is different from the known design of a fibrous basis, the use of a wide range of non-volatile or low volatile low viscosity petroleum products, as well as a wider class of antiseptics in addition to copper naphthenate and product interaction polyethylenepolyamine with resin acids and additional content of surface-active substances.

Advantages of the invention:

- high mechanical strength, stiffness and durability;

- high moisture resistance;

- high exploitational;

- high adaptability;

minimal expenses for impregnation of the material with high performance;

- no waste;

- low cost.

The tape can be made from plant (flax, jute, hemp, kenaf, cotton and so on), or synthetic (polyester, polyamide, viscose and so on), or mineral (glass, basalt and so on), or mixed fibers. Belt width 40-90 mm is defined by the design, size and brand of cable, as well as design LineaMatic.

Restrictions on choice of yarn to a fabric base protective cable material impose mark and the destination of the cable, the operating conditions of the cable, the protective characteristics of the material (tape): the strength and elongation in the machine direction, stiffness, propityvaet and so on, the process parameters of the manufacturing belt, and features a protective cover, such as thickness, strength, frost resistance, adhesion to a metal sheath or armor, etc.

For power armoured cables with impregnated paper insulation all these requirements meets yarn of bast fibres according to GOST 10078-85, commissioned in the year 1985, for example jute or linen yarn linear density of 200-400 Tex. For characterise mass point samples of the yarn in grams to the length of this spot samples (50 m) multiplied by 1000.

Tape from jute or linen yarn has good wettability, high enough porosity necessary for high-quality impregnation of the filler, good adhesion to the metal cable sheath and armour, high specific strength, frost resistance and rigidity. The use of other materials for protective cable tape degrades its manufacturability and reduces the quality of protective coverings of cables.

The linear density of the yarn for the manufacture of protective tape is determined by the settings of the protective cover cable: thick cover, the number of layers of tape, the thickness and strength of the tape, as well as the technological possibilities of the ribbon-weaving machines.

Reduction of the linear density of the yarn leads to the improvement of the efficiency of spinning and quality of impregnation of the tape, but this reduces the breaking load and increases the flow of the tape in a protective covering of the cable. The increase in linear density of yarn dramatically reduces the manufacturability and quality of spinning tape degrades the quality of her impregnation.

The design of the protective tape was chosen from the condition of maximum rigidity and strength of the tape needed to improve the quality of winding the tape on the cable, with a minimum mA is when choosing the design ribbon minimal shrinkage across the width of the tape when it is wound on the cable and ease of manufacture. All these requirements satisfies the most simple in tissue production of plain weave in which the longitudinal () and transverse (weft) yarns of the tape are perpendicular to each other.

The number of threads in the warp and weft tapes per unit length is selected according to the following criteria:

- the width of the ribbon 40-90 mm;

the weight per square meter of the tape is not more than 300 g;

- maximum strength and rigidity of the tape;

technological opportunities ribbon-weaving machines.

Taking into account these criteria were selected optimal number of threads in the warp and weft tapes per unit of length, equal to 0.6 to 1.3.

In the manufacture of tape on Shuttle looms the ratio of the number of threads in the warp and weft is equal to 0,9-1,3, and the shuttleless type is 0.6 - 0.8, Shuttle looms, the warp and the weft tapes are made from single yarn, and on shuttleless looms, the basis is of the single yarn, and the weft is made of dvuhnitochnogo yarn. For technological reasons, the tape base is made of yarn with a linear density of 280-400 Tex, and ducks - of yarns with a linear density of 200-280 Tex.

The reduction and enlargement ratio of the number of threads in the warp and weft per unit length reduces the stiffness and the diversity of the edges of the tape is achieved by increasing the number of edges of the warp.

As the filler, it is proposed to use a liquid non-volatile or low volatile low viscosity (unlike the prototype) petroleum products: low viscosity mineral oils, kerosene, diesel fuel, heating oil, etc.

Of oils can be used industrial oils AND brand-5A, AND 8A according to GOST 20799-88, year of entry 1988, transformer oil GOST 10121-76, commissioned in the year 1976, capacitor oil GOST 5775-85, year of entry 1985, spun the oil GOST 1642-75, commissioned in the year 1975, mixtures thereof, and waste oil after purification and dehydration. Constraints on the choice of filler impose solubility therein additives, viscosity, toxicity, acidity, volatility, price.

For the characteristic viscosity of the filler adopted viscosity, determined in accordance with GOST 8420-74, commissioned in the year 1974, Russia, by measuring time elapsed, in seconds, of a certain volume of filler through the calibration nozzle diameter of 4 mm viscometer type VZ-246.

To expedite and facilitate the impregnation of the filler should have a viscosity of not more than 15 CPS (at (200,5)With the viscometer VZ-246 with the nozzle diameter of 4 mm, the minimum volatility at temperatures up to 80With, to the dissolving additives, without changing their properties.

To the greatest degree meets all of these requirements transformer oil before and after testing, widely used in electrical industry.

As additives in the impregnating composition is proposed to use antiseptics to make the material and protective cover cable gribomont, corrosion inhibitors to protect metal cable sheath and armour from corrosion and surfactants to increase the penetrating ability of the impregnating composition and wettability of tissue basis.

Constraints on the choice of antiseptic impose its degree of antimicrobial and antifungal protection of cables, compatible with the impregnating composition and bitumen (solubility), toxicity, viscosity (in the case of impregnating compositions based on liquid petroleum products, chemical neutrality in relation to the fabric, filler, other additives, as well as to the elements of the cable cost. Antiseptic should provide funginertness protective tape and protective covers of the cable based on it. The degree of biofouling mushrooms tape should not exceed two points according to GOST 9.048-89, commissioned in the year 1989. Antiseptics should not call what owino, the most well-known antiseptic in the cable industry, the copper naphthenate, adopted on the prototype, under certain conditions can cause or exacerbate corrosion of metallic cable sheath (aluminum and lead), so the use of this antiseptic impregnation elements of the protective coverings of cables is prohibited by a Decision of the Association "cable" and Gosstandart of Russia from 01.07.98, besides naphthenate copper is highly toxic and expensive product that is not produced in Russia. The naphthenate copper precipitates during long-term storage impregnating composition (copper naphthenate 15% + cable oil 75%) in the digesters. For these reasons, the naphthenate copper cannot be used in this invention.

The antiseptic composition of the as-2 on THE other 2416-007-05773103-98, year of entry 1998, Russia, is a product of condensation polyethylenepolyamine with a resin acids of the tall oil pitch, adopted on the prototype. This antiseptic commercially produced in Russia.

Disadvantages antiseptic AC-2:

antiseptic is not soluble in liquid petroleum products and precipitates during cooling impregnating mass at a temperature of 20-30;

antiseptic as-2 significantly increases the viscosity is about the emnd protective fabric tape.

Test results in JSC Kamkabel" on resistance to fungi according to GOST 9.048-89 samples antiseptized jute tape set that antiseptics based on the derivatives of amine and resin acids (tall oil pitch, tall oil, rosin) do not provide the required funginertness jute tape.

It was also established that funginertness strips of bast fibres within the normal range 0-2 points according to GOST 9.048-89 is provided when using antiseptics based on the products of the interaction of amine derivatives: polyethylenepolyamine on THE 6-02-594-85, year of entry 1985, Russia, triethanolamine on THE 6-02-916-79, commissioned in the year 1979, Russia, supramol 294 on THE 6-05-1681-80, year of entry 1980, Russia, and other amine derivatives with similar characteristics, and fatty acids, including natural and synthetic higher saturated fatty acids, such as stearic, palmitic, and their kovovymi residues including kubovy the remainder of synthetic fatty acids on THE 38.1071231-89, commissioned in the year 1989, Russia, unsaturated and polyunsaturated fatty acids, such as oleic acid (unsaturated fatty acid), linoleic acid and linolenic acid (polyunsaturated fatty acid), and their kovovymi residues, including Kubo is key-based amine derivatives and pure fatty acids or their mixtures are easily dissolved in the liquid oil.

The use of antiseptics for impregnation of protective strips of bast fibres is possible, but not economically advisable.

For impregnation of the tape can be used antiseptic composition ASC-1 on THE other 84-07509103.489-98, year of entry 1998, Russia, representing a product of the interaction of a mixture of higher fatty acids with a content of carbon atoms C21 and above with an amine derivative, for example the product of the interaction of lupranol 294 or triethanolamine with kubovy the remainder of synthetic fatty acids.

Antiseptic ASC-1 has the following disadvantages:

- funginertness tape with this antiseptic is provided on the upper limit (2 points according to GOST 9.048-89);

- instability of the main characteristics (viscosity, solubility in liquid petroleum products, the presence of sediment) due to high content of impurities (unsaponifiable substances and resinous products of condensation and polymerization) as residue synthetic fatty acids;

antiseptic ASC-1 is a high viscosity product, therefore, significantly increases the viscosity of the impregnating composition and worsens its manufacturability;

antiseptic is made of scarce and expensive raw materials.

For these reasons, antiseptic ASC-1 can Eechelen above requirements antiseptic for protective cable material satisfies the interaction product of triethanolamine with soap stock, developed by the authors of the present invention.

This antiseptic is a low viscosity liquid product is well combined and no sediment is dissolved in all petroleum products, including mineral oil, polugudron, kerosene, diesel fuel and bitumen, technological, not soluble in water.

Due to the high total alkalinity (up to 10%) and the content of natural plant fungicide, antiseptic has powerful antimicrobial and antifungal properties. Funginertness protective material with this antiseptic is 0-1 points according to GOST 9.048-89.

It was also established that the antiseptic is an active inhibitor of the corrosion of ferrous (steel) and nonferrous (lead, aluminum) metals.

This antiseptic is made of non-deficient and low-cost domestic raw materials.

As surface-active substances (surfactants), which significantly increase the penetrating ability of the impregnating composition and wettability of the tape, may be used water-insoluble primary (distilled) amines on THE 2413-047-00480689-95, year of entry 1995, Russia, or distillation amines on THE 2413-012-00203795-98, year of entry 1998, Russia, which is well combined and dissolved in all petroleum products, as well as capacity material manufactured according to the following technology.

Fabric-based tape is manufactured on a special ribbon-weaving machines (Shuttle or shuttleless type) and returns to the rollers. Next, the tape is impregnated with an antiseptic solution and a surfactant in a liquid oil, such as transformer oil in the traditional way: by unwinding the tape from the roller and passing it through an impregnating bath with pull rolls or impregnation rollers entirely in the vessel with subsequent extraction of excess impregnating composition in the centrifuge.

The content of the impregnating composition in the finished material is brought through the wringer before 14-42,5% by weight. The lower limit of the content of an impregnating composition is determined by the technological possibilities of extraction. The increase in the content of the impregnating composition in the material above the upper limit leads to a significant deterioration of the performance characteristics of the material and the protective cover of the cable due to the different viscosity of the bitumen layer cover with oil.

The essence of the invention is illustrated by the following example.

The table below shows the variety of compositions of the few examples of cable protective material, including material composition of the prototype, as well as their main characteristics.

For manufacturing samples of the CEN.

As can be seen from the table, physico-mechanical characteristics of the material are significantly superior to similar characteristics of the prototype. At the same time, the new material is more sophisticated and has increased funginertness.

The optimal content of components in the material, wt.%:

Filler 12-36

Antiseptic 2-6

Surfactants 0,2-0,5

Tape the Rest of it

A reduction in the content of the filler is difficult due to technological reasons. The increase in the content of the filler leads to deterioration of performance characteristics of the material.

The reduction in the content of antiseptics reduce gribomont material, and the increase in the content of antiseptic reduces the processability impregnating composition and cost of material.

The reduction in the content of the surfactant leads to non-uniform impregnation of the material with antiseptic and bitumen in the composition of the cable, the increase in the content of the surfactant leads to a decrease in processability impregnating composition (increase in viscosity) and impractical for economic reasons.

Empirically also have a negligible impact grades of filler (liquid non-volatile or low volatile low viscosity oil) on the Abel". Adjusted for the production of this material.

Claims

1. The material of the protective cable made of a fabric base in the form of a wire mesh ribbon from one or dvuhnitochnogo yarn from bast or mixed fibers with a linear density of 200-400 Tex, plain weave with reinforced edges when the ratio of the number of threads in the warp and weft per unit of length equal to 0,6-1,3-impregnated composition comprising a liquid non-volatile or low volatile low viscosity oil as a filler, the product of the interaction of amine derivatives with fatty acids or their kovovymi remains as an antiseptic and primary or distillation amines as surfactants in the following ratio, wt.%:

The filler 12 - 36

Antiseptic 2 - 6

Surfactant 0,2 - 0,5

Tape the Rest of it

2. The material of the protective cable under item 1, characterized in that as a fabric base it contains mesh tape from jute fiber.

3. The material of the protective cable under item 1, characterized in that the filler it contains transformer oil.

4. The material of the protective cable under item 1, characterized in that as an antiseptic it with the

 

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