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CN-122011443-A - Fireproof flame-retardant basalt fiber pipeline for large ship and preparation method thereof

CN122011443ACN 122011443 ACN122011443 ACN 122011443ACN-122011443-A

Abstract

The invention discloses a fireproof flame-retardant basalt fiber pipeline for a large ship and a preparation method thereof, which belong to the technical field of composite material pipelines, wherein a siloxane coating layer is constructed on the surface of basalt fibers through hydrolysis condensation reaction of tetraethoxysilane, so that the interface compatibility of the fibers and an organic matrix can be effectively improved, the roughness of the surface of the basalt fibers is improved, the aggregation of the fibers in the matrix is avoided, the silicon dioxide coating layer is utilized to fix ammonium polyphosphate, the mechanical property and the structural stability of the pipeline are improved, the flame-retardant effect is prolonged, the ammonium polyphosphate is an efficient intumescent flame retardant and is combined with basalt composite fibers in nitrogen atmosphere, a compact carbon layer can be formed when heated, oxygen and heat are isolated, meanwhile, the basalt fibers have inorganic high-temperature resistant characteristics, and the inorganic high-temperature resistant characteristics cooperate with each other to endow the pipeline with excellent fireproof flame-retardant effect, and meet the fireproof safety requirements of the large ship.

Inventors

  • YANG SUQING
  • YANG LING
  • LU JINSONG

Assignees

  • 江苏弘义船舶科技有限公司

Dates

Publication Date
20260512
Application Date
20260123

Claims (10)

  1. 1. The preparation method of the fireproof flame-retardant basalt fiber pipeline for the large ship is characterized by comprising the following steps of: The method comprises the steps of feeding flame-retardant basalt composite fibers into an oven for sectional drying, heating the front section of the oven to 85-90 ℃ from 20-30 ℃, then preserving heat for 50-60min at the temperature of 85-90 ℃, heating the middle section of the oven to 100-105 ℃ from 85-90 ℃ and then preserving heat for 85-95min at 100-105 ℃, heating the rear section of the oven to 110-120 ℃ from 100-105 ℃ and preserving heat for 140-160min at 110-120 ℃ to thoroughly evaporate water on the surfaces of the fibers, then annularly winding the fibers into a net shape to prepare a fiber reinforced layer, pouring graphene, polyethylene resin and phenolic resin on the fiber reinforced layer through forming extrusion equipment, extruding, forming and curing to obtain the flame-retardant basalt fiber pipeline for large ships.
  2. 2. The preparation method of the fireproof flame-retardant basalt fiber pipeline for the large ship, which is disclosed in claim 1, is characterized in that the dosage ratio of graphene to polyethylene resin to phenolic resin is 20-22g:60-70g:50-55g.
  3. 3. The preparation method of the fireproof flame-retardant basalt fiber pipeline for the large ship, which is disclosed in claim 1, is characterized in that the specific preparation steps of the flame-retardant basalt composite fiber are as follows: Adding basalt composite fiber, ammonium polyphosphate and ethanol solution with the mass fraction of 50-60% into a reaction kettle, stirring for 30-40min at 50-60 ℃ and 400-500r/min under nitrogen atmosphere, heating to 80 ℃, continuously stirring for 4-5h, filtering, and washing a filter cake with deionized water for 2-4 times to obtain the flame-retardant basalt composite fiber.
  4. 4. The method for preparing the fireproof flame-retardant basalt fiber pipeline for the large ship according to claim 3, wherein the dosage ratio of the basalt composite fiber to the ammonium polyphosphate to the ethanol solution is 40-42g:22-24g:500-600mL.
  5. 5. The preparation method of the fireproof flame-retardant basalt fiber pipeline for the large ship, which is disclosed in claim 1, is characterized in that the preparation method of the basalt composite fiber comprises the following specific steps: adding basalt fiber, ethanol, deionized water and ammonia water into a reaction kettle, stirring for 20-30min at 20-25 ℃ and 500-600r/min, then adding tetraethoxysilane, heating to 40-50 ℃, continuously stirring for 2-3h, carrying out suction filtration, washing the fiber with ionized water and absolute ethyl alcohol for 2-4 times respectively, and carrying out vacuum drying at 60-70 ℃ for 1-2h to obtain the basalt composite fiber.
  6. 6. The preparation method of the fireproof flame-retardant basalt fiber pipeline for the large ship, which is disclosed in claim 5, is characterized in that the dosage ratio of basalt fiber to ethanol to deionized water to ammonia water to tetraethoxysilane is 50-60 g/600-700 mL/70-80 mL/35-40 mL/80-90 mL.
  7. 7. The preparation method of the fireproof flame-retardant basalt fiber pipeline for the large ship according to claim 5, wherein the basalt fiber is specifically prepared by the following steps: Adding pretreated basalt, hydrochloric acid solution with the concentration of 3moL/L and oxalic acid with the mass fraction of 20-25% into a high-pressure reaction kettle, stirring for 8-9 hours at 200-220 ℃ and 500-600r/min, naturally cooling to room temperature, filtering, respectively washing a filter cake with ionized water and absolute ethyl alcohol for 2-4 times, vacuum drying at 60-70 ℃ for 1-2 hours, freezing the product into solid at-20 ℃, performing ultrasonic treatment for 40-60 minutes after thawing, performing suction filtration, respectively washing the filter cake with ionized water and absolute ethyl alcohol for 2-4 times, vacuum drying at 60-70 ℃ for 1-2 hours, and grinding to be fluffy to obtain basalt fibers.
  8. 8. The method for preparing the fireproof flame-retardant basalt fiber pipeline for the large ship, which is disclosed in claim 7, is characterized in that the dosage ratio of the pretreated basalt to the hydrochloric acid solution to the oxalic acid is 70-80g:1-2L:800-900mL.
  9. 9. The preparation method of the fireproof flame-retardant basalt fiber pipeline for the large ship according to claim 7, wherein the specific preparation steps of the pretreated basalt are as follows: Adding basalt and deionized water into a reaction kettle, stirring for 20-30min at 20-25 ℃ and 500-600r/min, standing and soaking for 24-26h, naturally settling, taking upper suspension, filtering, washing a filter cake with ionized water and absolute ethyl alcohol for 2-4 times respectively, and vacuum drying for 1-2h at 60-70 ℃ to obtain pretreated basalt; the dosage ratio of the martial arts to the deionized water is 80-90 g/800-900 mL.
  10. 10. A fire-retardant basalt fiber pipe for large ships, which is characterized by being prepared by the preparation method as claimed in any one of claims 1 to 9.

Description

Fireproof flame-retardant basalt fiber pipeline for large ship and preparation method thereof Technical Field The invention belongs to the technical field of composite material pipelines, and particularly relates to a fireproof flame-retardant basalt fiber pipeline for a large ship and a preparation method thereof. Background The pipeline is widely applied to industries such as building pipelines, petroleum, electric power, chemical industry, papermaking, urban water supply and drainage, factory sewage treatment, sea water desalination, gas conveying pipe networks and the like. Meanwhile, the pressure pipeline relates to various industries, and because the flow speed and the flow rate of the conveying medium are high, the conveying medium temporarily continues to impact, wear, corrode the pipeline wall, and the like, so that the high-temperature-resistant pipeline is fatigued, and is gradually worn out, and the safety requirement of the pipeline is very important. Traditional steel pipelines and plastic pipelines are poor in corrosion resistance, fire resistance, high temperature resistance and weather resistance, and cannot meet the current demands. Particularly for some fluids with strong corrosiveness, bad weather, poor fluidity and high temperature, the transportation safety of the fluids cannot be ensured. At present, various composite pipes such as fiber-reinforced pipes composited with thermoplastic polymer materials and fibers, steel-lined tetrafluoro pipes composited with polymer materials and steel materials, polyethylene composite pipes, and the like are emerging. The high temperature resistance of the composite pipes is improved to a certain extent, but the current higher and higher use requirements cannot be met, and the corrosion resistance of the composite pipes is poor, so that the use of the composite pipes in the actual production process is limited. Chinese patent CN101694251a discloses a self-high temperature resistant high temperature oil pipeline and a preparation method thereof, wherein a heating layer is formed by glass fiber and epoxy resin, and a heating layer is formed by carbon fiber epoxy resin, so that the functions of heat preservation and high temperature resistance are realized, but the high temperature resistance and flame retardant performance are still to be improved. The invention patent of application number 201310023074.2 discloses a continuous fiber reinforced thermoplastic composite high-pressure pipeline, wherein the inner wall and the outer wall are respectively made of thermoplastic resin materials, the middle layer is a continuous fiber resin reinforced layer formed by thermoplastic composite of a plurality of fiber resin layers, has higher heating performance and stronger shock resistance, but cannot meet the increasingly higher requirements of modern production on high temperature resistance, and has no relation in improving the corrosion resistance and the fire resistance. Disclosure of Invention The invention aims to provide a fireproof flame-retardant basalt fiber pipeline for a large ship and a preparation method thereof, wherein a siloxane coating layer is constructed on the surface of basalt fiber through hydrolysis condensation reaction of tetraethoxysilane, so that the interface compatibility of the fiber and an organic matrix can be effectively improved, the roughness of the surface of basalt fiber is improved, the aggregation of the fiber in the matrix is avoided, the ammonium polyphosphate is fixed by utilizing the silicon dioxide coating layer, the mechanical property and the structural stability of the pipeline are improved, and the flame-retardant effect is prolonged. The aim of the invention can be achieved by the following technical scheme: A preparation method of a fireproof flame-retardant basalt fiber pipeline for a large ship comprises the following steps: The method comprises the steps of feeding flame-retardant basalt composite fibers into an oven for sectional drying, heating the front section of the oven to 85-90 ℃ from 20-30 ℃, then preserving heat for 50-60min at the temperature of 85-90 ℃, heating the middle section of the oven to 100-105 ℃ from 85-90 ℃ and then preserving heat for 85-95min at 100-105 ℃, heating the rear section of the oven to 110-120 ℃ from 100-105 ℃ and preserving heat for 140-160min at 110-120 ℃ to thoroughly evaporate water on the surfaces of the fibers, then annularly winding the fibers into a net shape to prepare a fiber reinforced layer, pouring graphene, polyethylene resin and phenolic resin on the fiber reinforced layer through forming extrusion equipment, extruding, forming and curing to obtain the flame-retardant basalt fiber pipeline for large ships. Further, the dosage ratio of the graphene to the polyethylene resin to the phenolic resin is 20-22 g/60-70 g/50-55 g. Further, the specific preparation steps of the flame-retardant basalt composite fiber are as follows: Adding basalt composite fiber, ammonium