CN113445340B - High-flame-retardant and fire-resistant cable filling rope and preparation method thereof - Google Patents
High-flame-retardant and fire-resistant cable filling rope and preparation method thereof Download PDFInfo
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- CN113445340B CN113445340B CN202110760077.9A CN202110760077A CN113445340B CN 113445340 B CN113445340 B CN 113445340B CN 202110760077 A CN202110760077 A CN 202110760077A CN 113445340 B CN113445340 B CN 113445340B
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/14—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable
- D07B1/141—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable comprising liquid, pasty or powder agents, e.g. lubricants or anti-corrosive oils or greases
- D07B1/142—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable comprising liquid, pasty or powder agents, e.g. lubricants or anti-corrosive oils or greases for ropes or rope components built-up from fibrous or filamentary material
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/02—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1895—Internal space filling-up means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2083—Jackets or coverings
- D07B2201/2087—Jackets or coverings being of the coated type
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2083—Jackets or coverings
- D07B2201/2088—Jackets or coverings having multiple layers
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2083—Jackets or coverings
- D07B2201/2092—Jackets or coverings characterised by the materials used
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2205/00—Rope or cable materials
- D07B2205/10—Natural organic materials
- D07B2205/103—Animal and plant materials
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2205/00—Rope or cable materials
- D07B2205/20—Organic high polymers
- D07B2205/2039—Polyesters
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2401/00—Aspects related to the problem to be solved or advantage
- D07B2401/20—Aspects related to the problem to be solved or advantage related to ropes or cables
- D07B2401/202—Environmental resistance
- D07B2401/2035—High temperature resistance
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2501/00—Application field
- D07B2501/20—Application field related to ropes or cables
- D07B2501/2076—Power transmissions
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- Oil, Petroleum & Natural Gas (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
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Abstract
The invention discloses a high flame-retardant fire-resistant cable filling rope and a preparation method thereof, wherein the preparation method comprises the following steps: making yarns by using raw materials; soaking the yarn in the flame-retardant liquid, and removing the redundant flame-retardant liquid in the yarn after taking out; coating flame-retardant glue, compressing and removing the redundant flame-retardant glue; spraying flame-retardant dry powder; coating flame-retardant glue, compacting, removing redundant flame-retardant glue, and then drying; coating ceramic silicon rubber functional liquid, uniformly scraping, and then drying; preparing the filling rope to obtain the product. The elongation of the filling rope is more than 15%, the filling rope has a four-layer flame-retardant structure comprising flame-retardant liquid in the yarn and an external flame-retardant structure, the oxygen index is more than 60%, the filling rope does not crack at 950 ℃ for 4 hours, and the filling rope has excellent flame-retardant property and flame-retardant property; the surface has the function of an oxidation resistant layer self-locking structure, so that the stability of flame retardance and tensile strength of the product in a high-temperature irradiation environment is improved; no hygroscopicity, and water content less than 1%.
Description
Technical Field
The invention relates to the technical field of cable manufacturing, in particular to a high-flame-retardant and fire-resistant cable filling rope and a preparation method thereof.
Background
The cable industry has become the second largest industry in the mechanical industry, second only to the automotive industry. In 2020, the output value of the cable has passed about 15000 trillion yuan, and the fire-resistant cable of the flame-retardant cable accounts for about 50 percent of the fire-resistant cable. The annual demand of the flame-retardant fire-resistant cable 2020 reaches approximately 5 billion yuan, and the annual consumption of the cable core filling rope in the necessary flame-retardant fire-resistant cable reaches more than 5 ten thousand tons, and still increases by about 10%.
At present, the filling ropes used in the flame-retardant and fire-resistant cables in the market are various, and domestic similar products have the defects of uneven performance, poor stability and poor environmental protection. The filling ropes commonly used in the prior domestic flame-retardant filling ropes comprise glass fiber filling ropes, rock wool filling ropes, flame-retardant polypropylene tearing net filling ropes, flame-retardant polyester cotton yarn filling ropes, flame-retardant cotton yarn filling ropes and ceramic siliconized rubber filling ropes, wherein only the ceramic siliconized rubber filling ropes can achieve better fire resistance, but have high price, large specific gravity, flame-retardant oxygen index less than 30 percent and poor flame-retardant property. In addition, the glass fiber filling rope, the rock wool filling rope and the flame-retardant polypropylene tearing net filling rope have poor environmental protection performance and poor radiation resistance, and cannot be applied to nuclear-grade cables. The flame-retardant polyester cotton yarn filling rope and the flame-retardant cotton yarn filling rope have the flame-retardant oxygen index less than 30 percent and poor flame-retardant performance.
Therefore, a multi-performance filling material integrating oxidation resistance, radiation resistance, long service life, flame retardance and fire resistance is not available in the market at present, and the requirements of long service life, high flame retardance and radiation resistance of cables such as nuclear power cables, high-speed rails and the like which run around the world in China are difficult to meet.
Disclosure of Invention
The invention aims to provide a high-flame-retardant fire-resistant cable filling rope and a preparation method thereof, the filling rope has excellent oxidation resistance, radiation resistance, long service life, flame retardance and fire resistance, and each performance index can meet the requirement of high-performance fire-resistant cable development at a high speed.
In order to achieve the above object, the first aspect of the present invention discloses a method for preparing a high flame-retardant fire-resistant cable filling rope, comprising the following steps:
a preparation method of a high-flame-retardant fire-resistant cable filling rope comprises the following steps:
s1, manufacturing yarns by using the raw materials;
s2, dipping the yarn manufactured in the S1 into flame retardant liquid, and removing the redundant flame retardant liquid in the yarn after the yarn is taken out to obtain A;
s3, coating the surface A obtained in the step S2 with flame retardant glue, compacting the surface A with flame retardant glue after coating is finished, and removing redundant flame retardant glue to obtain a product B;
s4, spraying flame-retardant dry powder on the surface B obtained in the step S3 to obtain a powder C;
s5, coating the surface C obtained in the step S4 with flame retardant glue, after coating, compacting the surface C with flame retardant glue, removing redundant flame retardant glue, and then drying to obtain D;
s6, coating the surface D obtained in the step S5 with the ceramic silicone rubber functional liquid, after the coating is finished, uniformly scraping the ceramic silicone rubber functional liquid on the surface E, and then drying to obtain the surface E;
s7 preparing filling rope from one or more E obtained from S6.
By adopting the scheme, the yarns are used as the base materials, and are firstly soaked in the flame retardant liquid, so that the flame retardant liquid can fully permeate into fibers in the yarns, the problems that the interior of the existing like products has no flame retardant characteristic and the like products can be combusted again in the yarns after being combusted outside are solved, and the flame retardant characteristic of the products from inside to outside is improved; then, coating flame-retardant glue for the first time, wherein the flame-retardant glue exists as a flame-retardant layer, and can isolate the flame-retardant liquid which is easy to absorb moisture and regain moisture inside from the outside air, so that the flame retardance of the yarn can be kept; then, spraying flame-retardant dry powder on the surface by using the viscosity of the flame-retardant adhesive, wherein the flame-retardant dry powder forms another flame-retardant layer; then, coating flame-retardant glue on the surface of the flame-retardant dry powder for the second time, and drying to seal the flame-retardant dry powder to form another flame-retardant layer, so that the flame-retardant dry powder is effectively prevented from falling off, falling off and flying; and finally, coating ceramic silicon rubber functional liquid on the surface of the flame-retardant rubber coated for the second time to increase the fire resistance.
The whole packing rope is of a multilayer structure, so that the flame-retardant property of a product from inside to outside is guaranteed, and the flame-retardant and fire-resistant properties and the service life of the packing rope are improved under the synergistic effect of the multiple flame-retardant layers and the fire resistance of the outside.
On the basis of the technical scheme, the invention can be further improved as follows:
further, the raw material in the S1 is cotton, the yarn number of the S1 is 2-3, and the specific manufacturing method of the yarn comprises the following steps:
s11, crushing the raw materials into small and long crushed materials by a high-speed tearing crusher, and processing the crushed materials by a coarse opener to obtain fibrous short filaments;
s12, processing the fibrous short filaments obtained in the step S11 by a large-bin cotton mixing machine to obtain fluffy fibers;
s13, further processing the fluffy fibers obtained in the step S12 by a fine opener, then collecting by an air pressure cotton box and carding by a carding machine to obtain a reticular fiber layer, and then manufacturing by adopting an air spinning process.
By adopting the scheme, the raw materials of the yarn can adopt waste clothes, cotton and the like, so that the problem of recycling a large amount of waste clothes, cotton quilts and other wastes in the market is solved; after the raw materials are smashed by a high-speed tearing and smashing machine, the fiber can be rapidly formed through rough opening, fluffing of a cotton mixer, fine opening, carding and air spinning in sequence, and the fiber forming qualification rate is high.
Further, the flame retardant liquid in the S2 is a phosphorus-nitrogen water-based flame retardant liquid with the mass concentration of 15-25%.
Further, the flame retardant glue in the S3 and S5 comprises the following components in parts by mass: 7-8 parts of a flame retardant and 2-3 parts of an emulsion, wherein the flame retardant is magnesium hydroxide or a mixture of the magnesium hydroxide and the magnesium hydroxide, and the emulsion is an acrylic emulsion or an ethyl acetate copolymer emulsion.
Further, the flame-retardant dry powder in the S4 is magnesium hydroxide powder or aluminum hydroxide powder, and the mesh number of the flame-retardant dry powder is 1000-5000 meshes.
By adopting the scheme, the density of the flame-retardant dry powder is reduced and the flame-retardant performance is influenced due to the excessively small mesh number; too large a mesh would result in too high a cost.
Further, the D obtained in S5 in S6 is subjected to surface roughening treatment before being coated with the ceramming silicone rubber functional liquid.
By adopting the scheme, the surface roughening treatment is carried out before the ceramic silicon rubber functional liquid is coated, so that a roughened surface is formed on the surface of the flame-retardant rubber, the adsorption capacity of the ceramic silicon rubber functional liquid can be effectively improved, and the fire resistance is improved.
Further, the surface sanding treatment specifically comprises: and D obtained in the step S5 is coiled on the coiled head, the coiled head is uncoiled on an uncoiling frame, and the D is subjected to surface roughening treatment by using a pair of surface roughening rollers during uncoiling, wherein the rotating speed of the surface roughening rollers is greater than the uncoiling speed, and the surface roughening rollers are 150-250-mesh chromium-plated rollers.
By adopting the scheme, the upper and lower surface roughening rollers all adopt the chromium plating roller, the rotating speed is higher than the yarn running speed, the surface of the flame-retardant glue layer has a mixed and disorderly scratch phenomenon, and the coating adsorption capacity is increased when the next procedure is performed conveniently.
Further, the ceramic silicone rubber functional liquid in the step S7 includes the following components in parts by mass: 300-400 parts of nanobelt toughened ceramic powder, 100-150 parts of antimony flame retardant, 250-300 parts of ethyl ester, 100-150 parts of silica gel, 0.5-1 part of molybdenum disilicide and 0.5-1 part of chromium disilicide.
By adopting the scheme, the nanobelt toughened ceramic powder improves the fire resistance, and the antimony flame retardant improves the outer-layer flame resistance; molybdenum disilicide and chromium disilicide are added, the molybdenum disilicide and chromium disilicide react with oxygen at high temperature to generate silicon oxide glass and molybdenum and chromium oxides, and the molybdenum and chromium oxides are mixed in the silicon dioxide glass to play the roles of increasing the fluidity and stabilizing the glass state, so that the coated surface has the function of an oxidation resistant layer self-locking structure, the stability of flame retardance and tensile strength of the product in a high-temperature irradiation environment is improved, and the defects that the existing like products are poor in irradiation resistance and easy to oxidize on the surface are overcome.
Further, the preparation of the filling rope in the step S8 specifically includes: when preparing a filling rope with the specification of phi 1-6mm, 1 or more F prepared in the step S6 are stranded and twisted into a round shape; when the filling rope with the specification of phi 6-10mm is prepared, a plurality of F strands prepared in the step S6 are taken and twisted into a round shape in a doubling and twisting mode; when the filling rope with the specification of phi 10-20mm is prepared, a plurality of F prepared in the step S6 are naturally folded and then externally wound with the S-shaped wrapped terylene flame retardant yarn.
By adopting the above scheme, the filling rope selects different rope making modes according to different specifications, the small-caliber filling rope is directly twisted in parallel, the middle caliber adopts a hinge twisting process, the large-caliber flame-retardant polyester yarn is additionally used as a binding belt to be S-shaped bound, the tightness and the roundness of the filling rope are ensured, the effects of light specific gravity and round filling are achieved, and the defects that the traditional process needs to adopt different outer diameters to form bundles for twisting, and the defects of labor and time consumption and poor efficiency are overcome.
The invention discloses a high-flame-retardant and fire-resistant cable filling rope prepared by the preparation method in a second aspect.
Compared with the prior art, the invention has the beneficial effects that:
1. the filling rope adopts the yarns as the base materials, ensures that the elongation of the filling rope is more than 15 percent, can avoid fracture under different working conditions, and effectively prolongs the service life of the filling rope;
2. the filling rope yarn is soaked in the flame-retardant liquid, the flame-retardant liquid can fully permeate into fibers in the yarn, the problems that the existing like products have no flame-retardant characteristic and the like products can be combusted again in the yarn after being combusted outside are solved, the flame-retardant characteristic of the product from inside to outside is improved, then the first layer of flame-retardant glue is coated, the flame-retardant glue exists as a flame-retardant layer, and meanwhile, the flame-retardant liquid which is easy to absorb moisture and regain moisture in the yarn can be isolated from the outside air, so that the flame retardance of the yarn can be kept; after the first layer of flame-retardant glue is coated, flame-retardant dry powder is sprayed on the surface by using the viscosity of the flame-retardant glue, the flame-retardant dry powder forms another flame-retardant layer, the flame-retardant glue is coated on the surface of the flame-retardant dry powder for the second time, and the flame-retardant dry powder is sealed by drying to form another flame-retardant layer, so that the flame-retardant dry powder is effectively prevented from falling off, falling off and flying; finally, ceramic silicon rubber functional liquid is coated on the filling rope, so that the fire resistance is increased, the filling rope has a four-layer flame-retardant structure comprising flame-retardant liquid in the yarn and an external flame-retardant structure, the oxygen index is more than 60%, the filling rope does not crack at 950 ℃ for 4 hours, and the filling rope has excellent flame-retardant performance and fire resistance;
3. the ceramic silicon rubber functional liquid coated on the outermost part of the filling rope contains molybdenum disilicide and chromium disilicide, the molybdenum disilicide and the chromium disilicide react with oxygen at high temperature to generate silicon oxide glass and molybdenum and chromium oxides, and the molybdenum and chromium oxides are mixed in the silicon oxide glass to play roles in increasing fluidity and stabilizing glass state, so that the coated surface has the function of an oxidation resistant layer self-locking structure, the stability of flame retardance and tensile strength of the product in a high-temperature irradiation environment is improved, and the defects that the existing like products are poor in irradiation resistance and easy to oxidize on the surface are overcome;
4. the filling rope is coated with the ceramic silicone rubber functional liquid for surface roughening treatment, so that the adsorption capacity of the ceramic silicone rubber functional liquid can be effectively improved, and the fire resistance is improved;
5. the filling rope disclosed by the invention adopts a multi-layer flame-retardant structure and an outermost layer fireproof structure, is free of hygroscopicity, has the water content of less than 1%, can adapt to different working condition requirements, and effectively prolongs the service life.
6. The filling rope adopts different rope manufacturing processes aiming at products with different diameter specifications, and the tightness and roundness of the filling rope are ensured.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
The first embodiment is as follows:
the embodiment discloses a high-flame-retardant and fire-resistant cable filling rope which is prepared by the following steps:
s1 yarn is prepared by using waste cotton-padded clothes as raw materials, which comprises the following steps:
s11, crushing the raw materials into small and long crushed materials by a high-speed tearing crusher, and processing the crushed materials by a coarse opener to obtain fibrous short filaments;
s12, processing the fibrous short filaments obtained in the step S11 by a large-bin cotton mixing machine to obtain fluffy fibers;
s13, further processing the fluffy fibers obtained in the step S12 by using a fine opener, then collecting by using an air pressure cotton box and carding by using a carding machine to obtain a reticular fiber layer, and then manufacturing by using an air spinning process to obtain the fluffy fiber;
s2, dipping the yarn manufactured in the S1 into flame retardant liquid, taking out the yarn, and then extruding the yarn by using a compression roller to remove redundant flame retardant liquid in the yarn to obtain A, wherein the flame retardant liquid is phosphorus-nitrogen water-based flame retardant liquid with the mass concentration of 15%;
s3, dipping the A obtained in S2 in flame-retardant glue, taking out the glue, pressing the surface flame-retardant glue by using a press roll, and removing redundant flame-retardant glue to obtain B, wherein the flame-retardant glue comprises the following components in parts by mass: 7 parts of magnesium hydroxide and 3 parts of acrylic emulsion;
s4, spraying flame-retardant dry powder on the surface B obtained in the step S3 to obtain a powder C, wherein the flame-retardant dry powder is 1000-mesh magnesium hydroxide powder;
s5, dipping the C obtained in the step S4 in flame-retardant glue, taking out the C, pressing the surface flame-retardant glue by a press roll, removing redundant flame-retardant glue, putting the C into a drying oven, and drying the C at 150 ℃ to obtain D, wherein the flame-retardant glue comprises the following components in parts by mass: 7 parts of magnesium hydroxide and 3 parts of acrylic emulsion;
s6, coating the surface D obtained in S5 with a ceramic silicone rubber functional liquid, leveling the surface E with the ceramic silicone rubber functional liquid after coating, and drying at 150 ℃ to obtain E, wherein the ceramic silicone rubber functional liquid comprises the following components in parts by mass: 300 parts of nanobelt toughened ceramic powder, 150 parts of antimony flame retardant, 250 parts of ethyl ester, 150 parts of silica gel, 1 part of molybdenum disilicide and 0.5 part of chromium disilicide;
s7 taking two E obtained in S6, directly stranding and twisting to obtain the high-flame-retardant fire-resistant cable filling rope with the diameter of 2 mm.
Example two:
the embodiment discloses a high-flame-retardant and fire-resistant cable filling rope which is prepared by the following steps:
s1 yarn is prepared by using waste cotton-padded clothes as raw materials, which comprises the following steps:
s11, crushing the raw materials into small and long crushed materials by a high-speed tearing crusher, and processing the crushed materials by a coarse opener to obtain fibrous short filaments;
s12, processing the fibrous short filaments obtained in the step S11 by a large-bin cotton mixing machine to obtain fluffy fibers;
s13, further processing the fluffy fibers obtained in the step S12 by using a fine opener, then collecting by using an air pressure cotton box and carding by using a carding machine to obtain a reticular fiber layer, and then manufacturing by using an air spinning process to obtain the fluffy fiber;
s2, dipping the yarn manufactured in the S1 into a flame retardant liquid, taking out the yarn, and then removing the redundant flame retardant liquid in the yarn by using a compression roller to obtain A, wherein the flame retardant liquid is a phosphorus-nitrogen water-based flame retardant liquid with the mass concentration of 25%;
s3, dipping the A obtained in S2 in flame-retardant glue, taking out the glue, pressing the surface flame-retardant glue by a press roll, and removing redundant flame-retardant glue to obtain B, wherein the flame-retardant glue comprises the following components in parts by mass: 5 parts of magnesium hydroxide, 3 parts of aluminum hydroxide and 2 parts of acrylic emulsion;
s4, spraying flame-retardant dry powder on the surface B obtained in S3 to obtain C, wherein the flame-retardant dry powder is 4000-mesh aluminum hydroxide powder;
s5, dipping the C obtained in the step S4 in flame-retardant glue, taking out the C, pressing the surface flame-retardant glue by a press roll, removing redundant flame-retardant glue, putting the C into a drying oven, and drying the C at 150 ℃ to obtain D, wherein the flame-retardant glue comprises the following components in parts by mass: 5 parts of magnesium hydroxide, 3 parts of aluminum hydroxide and 2 parts of acrylic emulsion;
s6, coating the surface D obtained in S5 with a ceramic silicon rubber functional liquid, scraping the surface E with the ceramic silicon rubber functional liquid after coating, and drying at 150 ℃ to obtain E, wherein the ceramic silicon rubber functional liquid comprises the following components in parts by mass: 400 parts of nanobelt toughened ceramic powder, 100 parts of antimony flame retardant, 300 parts of ethyl ester, 100 parts of silica gel, 0.5 part of molybdenum disilicide and 1 part of chromium disilicide;
s7 taking ten E obtained in S6, and stranding and twisting the E to obtain the high-flame-retardant fire-resistant cable filling rope with the diameter of 8 mm.
Example three:
the embodiment discloses a high-flame-retardant and fire-resistant cable filling rope which is prepared by the following steps:
s1 yarn is prepared by using waste cotton-padded clothes as raw materials, which comprises the following steps:
s11, crushing the raw materials into small and long crushed materials by a high-speed tearing crusher, and processing the crushed materials by a coarse opener to obtain fibrous short filaments;
s12, processing the fibrous short filaments obtained in the step S11 by a large-bin cotton mixing machine to obtain fluffy fibers;
s13, further processing the fluffy fibers obtained in the step S12 by using a fine opener, then collecting the fluffy fibers by using an air pressure cotton box and carding the fluffy fibers by using a carding machine to obtain a reticular fiber layer, and then manufacturing the reticular fiber layer by using an air spinning process;
s2, dipping the yarn manufactured in the S1 into flame retardant liquid, taking out the yarn, and then extruding the yarn by using a compression roller to remove redundant flame retardant liquid in the yarn to obtain A, wherein the flame retardant liquid is phosphorus-nitrogen water-based flame retardant liquid with the mass concentration of 20%;
s3, dipping the A obtained in S2 in flame-retardant glue, taking out the glue, pressing the surface flame-retardant glue by using a press roll, and removing redundant flame-retardant glue to obtain B, wherein the flame-retardant glue comprises the following components in parts by mass: 8 parts of magnesium hydroxide and 2 parts of acrylic emulsion;
s4, spraying flame-retardant dry powder on the surface of the B obtained in the step S3 to obtain a powder C, wherein the flame-retardant dry powder is 5000-mesh magnesium hydroxide powder;
s5, dipping the C obtained in the step S4 in flame-retardant glue, taking out the C, pressing the surface flame-retardant glue by using a press roll, removing redundant flame-retardant glue, putting the C into an oven, and drying the C at 150 ℃ to obtain D, wherein the flame-retardant glue comprises the following components in parts by mass: 8 parts of aluminum hydroxide and 2 parts of acrylic emulsion;
s6, coating the surface D obtained in S5 with a ceramic silicon rubber functional liquid, scraping the surface E with the ceramic silicon rubber functional liquid after coating, and drying at 150 ℃ to obtain E, wherein the ceramic silicon rubber functional liquid comprises the following components in parts by mass: 380 parts of nanobelt toughened ceramic powder, 120 parts of antimony flame retardant, 280 parts of ethyl ester, 120 parts of silica gel, 1 part of molybdenum disilicide and 1 part of chromium disilicide;
s7 taking 16E obtained from S6, naturally stranding, and winding the terylene flame retardant yarn in an S shape on the outside to obtain the filling rope with the diameter of 12 mm.
Example of effects:
and (4) carrying out performance detection on the filling rope obtained in the second embodiment to obtain a table I.
The performance of the 2mm diameter cord obtained in example one was tested and compared with the performance of different types of 2mm cords of the prior art to obtain table two.
Table one embodiment two performance tests
TABLE II comparison of example one with Prior Art filling rope Performance
As shown in the table I, the filler rope of the second example adopts four layers of flame retardant structures including the internal flame retardant liquid and the outermost flame retardant layer, so that the oxygen index is greater than 60%, the surface of the filler rope does not crack when the fire resistance reaches 950 ℃ for 4 hours, and the filler rope has good flame retardant property and fire resistance.
The filling rope in the second embodiment adopts the waste cotton-padded clothes as the raw material, does not contain halogen integrally, has low cost and good environmental protection property, and meets the ROHS standard.
The filling rope of the second embodiment adopts yarns as base materials, has higher elongation which is more than 15 percent, can avoid fracture under the use working conditions of bending and the like, and effectively prolongs the service life.
In the inside yarn flooding fire-retardant liquid of filling rope of embodiment two, the outside is wrapped up by three layers fire-retardant layer and one deck flame retardant coating, and the moisture content is extremely low to no hygroscopicity can adapt to different operating mode demands, effectively improves life.
As shown in table two, compared with the same specification filling rope in the prior art, the filling rope in the first embodiment has the advantages of small gram weight difference, good environmental protection property, and good flame retardant property, fire resistance and elongation property, and can simultaneously have good flame retardant property, fire resistance and elongation property.
The filling rope of the first embodiment adopts two yarns as base materials, and the filling rope is directly twisted into a round shape and has good rounding rate.
In the description of the present invention, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent. Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being covered by the appended claims and their equivalents.
Claims (9)
1. A preparation method of a high-flame-retardant and fire-resistant cable filling rope is characterized by comprising the following steps:
s1, making yarns by using the raw materials;
s2, dipping the yarn manufactured in the S1 into flame retardant liquid, and removing the redundant flame retardant liquid in the yarn after the yarn is taken out to obtain A;
s3, coating the surface A obtained in the step S2 with flame retardant glue, compacting the surface A with flame retardant glue after coating is finished, and removing redundant flame retardant glue to obtain a product B;
s4, spraying flame-retardant dry powder on the surface B obtained in the step S3 to obtain a powder C;
s5, coating the surface C obtained in the step S4 with flame retardant glue, after coating, compacting the surface C with flame retardant glue, removing redundant flame retardant glue, and then drying to obtain D;
s6, coating the surface D obtained in S5 with a ceramic silicon rubber functional liquid, after coating, scraping the surface E with the ceramic silicon rubber functional liquid uniformly, and then drying to obtain E;
s7 preparing a filling rope from one or more E obtained from S6;
the ceramic silicon rubber functional liquid in the S6 comprises the following components in parts by mass: 300-400 parts of nanobelt toughened ceramic powder, 100-150 parts of antimony flame retardant, 250-300 parts of ethyl ester, 100-150 parts of silica gel, 0.5-1 part of molybdenum disilicide and 0.5-1 part of chromium disilicide.
2. The preparation method of the high flame-retardant and fire-resistant cable filling rope according to claim 1, wherein the raw material in S1 is cotton, the yarn count of S1 is 2-3, and the specific preparation method of the yarn comprises the following steps:
s11, crushing the raw materials into small and long crushed materials by a high-speed tearing crusher, and processing the crushed materials by a coarse opener to obtain fibrous short filaments;
s12, processing the fibrous short filaments obtained in the step S11 by a large-bin cotton mixing machine to obtain fluffy fibers;
s13, further processing the fluffy fibers obtained in the step S12 by using a fine opener, then collecting the fluffy fibers by using an air pressure cotton box, carding by using a carding machine to obtain a reticular fiber layer, and then manufacturing by using an air spinning process.
3. The preparation method of the high-flame-retardant and fire-resistant cable filling rope according to claim 1, wherein the flame-retardant liquid in S2 is a phosphorus-nitrogen aqueous flame-retardant liquid with a mass concentration of 15-25%.
4. The preparation method of the high-flame-retardant and fire-resistant cable filling rope according to claim 1, wherein the flame-retardant glue in the S3 and S5 comprises the following components in parts by mass: 7-8 parts of a flame retardant and 2-3 parts of an emulsion, wherein the flame retardant is magnesium hydroxide or aluminum hydroxide or a mixture of the magnesium hydroxide and the aluminum hydroxide, and the emulsion is an acrylic emulsion or an ethyl acetate copolymer emulsion.
5. The preparation method of the high flame-retardant and fire-resistant cable filling rope according to claim 1, wherein the flame-retardant dry powder in the S4 is magnesium hydroxide powder or aluminum hydroxide powder, and the mesh number of the flame-retardant dry powder is 1000-5000 meshes.
6. The method for preparing the filling rope for the high flame-retardant and fire-resistant cable according to claim 1, wherein D obtained in S5 in S6 is subjected to surface roughening treatment before being coated with the ceramic silicone rubber functional liquid.
7. The preparation method of the high-flame-retardant and fire-resistant cable filling rope according to claim 6, wherein the surface roughening treatment specifically comprises the following steps: and D obtained in the step S5 is wound on a reel head, the reel head is unwound on an unwinding frame, surface roughening treatment is carried out on the D by using a pair of surface roughening rollers during unwinding, the rotating speed of the surface roughening rollers is greater than the unwinding speed, and the surface roughening rollers are 150-250-mesh chromium plating rollers.
8. The method for preparing the filling rope for the high-flame-retardant and fire-resistant cable according to claim 1, wherein the filling rope prepared in the step S7 is specifically: when the filling rope with the specification of phi 1-6mm is prepared, 1 or more F prepared in the step S6 are doubled and twisted into a round shape; when the filling rope with the specification of phi 6-10mm is prepared, a plurality of F strands prepared in the step S6 are taken and twisted into a round shape in a doubling and twisting mode; when the filling rope with the specification of phi 10-20mm is prepared, a plurality of F prepared in the step S6 are naturally stranded, and then the outside of the F is wound with the S-shaped wrapped terylene flame retardant yarn.
9. A high flame-retardant and fire-resistant cable filler rope prepared by the preparation method of any one of claims 1 to 8.
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| CN102653927A (en) * | 2012-04-29 | 2012-09-05 | 宝应中欧电缆电器材料研发中心 | Nanometer environmentally-friendly inflaming retarding cotton yarn filling rope and manufacturing process thereof |
| CN103354125B (en) * | 2013-06-27 | 2016-08-03 | 北京倚天凌云科技股份有限公司 | LSOH anti-flaming glass fibre gasket for packing and preparation method thereof |
| RU159036U1 (en) * | 2015-08-20 | 2016-01-27 | Российская Федерация от лица которой выступает Министерство промышленности и торговли Российской Федерации | FIRE-RESISTANT FIRE-SAFE OPTICAL CABLE |
| CN105970704A (en) * | 2016-07-01 | 2016-09-28 | 江西龙泰新材料股份有限公司 | Production technology of nano-scale halogen-free highly-flame-retardant cable filling rope and wire hanging frame applied to production technology |
| CN107604718A (en) * | 2017-10-26 | 2018-01-19 | 宝应县科达电缆料有限公司 | A kind of high fire-retardance gasket for packing |
| CN209974983U (en) * | 2019-04-10 | 2020-01-21 | 山东博通医疗器材有限公司 | Impurity removing device of opener |
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