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CN-121976318-A - Intelligent safety belt for high-altitude operation

CN121976318ACN 121976318 ACN121976318 ACN 121976318ACN-121976318-A

Abstract

The invention belongs to the technical field of safety, in particular to an intelligent safety belt for high-altitude operation, which aims at the problems of insufficient mechanical property, poor weather resistance and durability, unbalanced impact resistance and buffering performance and poor special environmental adaptability of the existing base materials, and provides a scheme which comprises a safety belt main body for high-altitude operation and an intelligent safety belt monitor fixed on the safety belt main body for high-altitude operation, wherein the safety belt main body for high-altitude operation comprises a belt body and a metal connecting piece, the metal connecting piece is connected with the various parts of the belt body, breaks through the core performances of tensile strength, impact absorption, wear resistance, aging resistance and the like, has the expansion functions of electric conduction, flame retardance, chemical corrosion resistance and the like, can adapt to the requirements of multi-scene high-altitude operation, has the safety performance, environmental adaptability and industrialization application value, provides more reliable and comprehensive safety protection for high-altitude operators, and has important practical value and market prospect.

Inventors

  • Song Shunda
  • GAO FENGHUA
  • SONG WENCONG
  • Song Quankui

Assignees

  • 山东滨州安惠绳网集团有限责任公司

Dates

Publication Date
20260505
Application Date
20260314

Claims (10)

  1. 1. The intelligent safety belt for the high-altitude operation comprises a safety belt main body (1) for the high-altitude operation and an intelligent safety belt monitor fixed on the safety belt main body (1), and is characterized in that the safety belt main body (1) for the high-altitude operation comprises a belt body (3) and a metal connecting piece (2), wherein the metal connecting piece (2) is connected with the belt body (3) everywhere, and the belt body (3) comprises, by weight, 55-75 parts of modified polyester fiber, 15-25 parts of modified polyurethane elastomer, 2-7 parts of modified nano silicon dioxide, 1-4 parts of composite conductive filler, 1-5 parts of organic montmorillonite, 0.5-1.5 parts of antioxidant, 0.2-1.5 parts of ultraviolet absorber and 1-4 parts of toughening agent.
  2. 2. The intelligent safety belt for high-altitude operation according to claim 1, wherein the modified polyester fiber is prepared by pouring the polyester fiber into a 10wt% sodium hydroxide solution at a temperature of 60-80 ℃, performing alkali reduction treatment for 1 hour, washing to neutrality, immersing the polyester fiber into a 4wt% silane coupling agent ethanol solution, immersing the polyester fiber in the ethanol solution at a constant temperature of 50 ℃ for 3 hours, and then drying the polyester fiber at a temperature of 120 ℃ for 4 hours.
  3. 3. The intelligent safety belt for high-altitude operation according to claim 1, wherein the modified polyurethane elastomer is prepared by mixing polyurethane of polybutylene adipate type with nano hydroxyapatite with the mass fraction of 6% after being blocked by isocyanate, and reacting for 1 hour under the temperature condition of 90 ℃.
  4. 4. The intelligent safety belt for high-altitude operation according to claim 1, wherein the preparation process of the modified nano silicon dioxide comprises the steps of adding nano silicon dioxide powder into deionized water, performing ultrasonic dispersion for 45 minutes to obtain nano silicon dioxide suspension with the mass concentration of 15wt%, adding tetrabutyl titanate with the mass concentration of 2% of nano silicon dioxide into the nano silicon dioxide suspension, adjusting the pH value to 4, stirring and reacting for 1 hour at the temperature of 60 ℃, then adding stearic acid with the mass concentration of 4% of nano silicon dioxide, continuing stirring for 45 minutes, and finally performing centrifugal separation, drying, crushing and sieving to obtain the modified nano silicon dioxide.
  5. 5. The intelligent safety belt for high-altitude operation according to claim 1, wherein the preparation method of the composite conductive filler comprises the steps of mixing graphene and multi-wall carbon nanotubes according to a mass ratio of 4:1, adding the mixture into N-methylpyrrolidone, performing ultrasonic dispersion for 3 hours to obtain a dispersion liquid with a solid content of 7wt%, adding sodium dodecyl benzene sulfonate with a mass of 1% into the dispersion liquid, stirring for 1 hour at a temperature of 40 ℃, and then drying at an air inlet temperature of 210 ℃ and an air outlet temperature of 90 ℃ by adopting a spray drying method to obtain the composite conductive filler.
  6. 6. The intelligent safety belt for high-altitude operation according to claim 1, wherein the preparation method of the organic montmorillonite comprises the steps of adding sodium montmorillonite into deionized water, stirring and dispersing for 1 hour at a temperature of 75 ℃ to obtain montmorillonite suspension with a mass concentration of 3wt%, adding cetyl trimethyl ammonium bromide into the suspension according to a mass proportion of 15% of the montmorillonite, stirring at a constant temperature of 80 ℃ for 3 hours, cooling to room temperature after the reaction is finished, centrifugally separating, washing with deionized water until no bromide ions exist, drying for 5 hours at a temperature of 110 ℃, and grinding and sieving with a 200-mesh sieve to obtain the organic montmorillonite.
  7. 7. The intelligent safety belt for overhead working according to claim 1, wherein the antioxidant is formed by compounding an antioxidant 1010 and an antioxidant 168 according to a mass ratio of 1:1, the ultraviolet absorbent is formed by compounding an ultraviolet absorbent UV-327 and an ultraviolet absorbent UV-531 according to a mass ratio of 3:1, the toughening agent is a core-shell structure acrylic acid ester toughening agent, the core layer is polybutadiene, the shell layer is polymethyl methacrylate, the mass ratio of the core shell is 4:1, and the particle size is 150nm.
  8. 8. The intelligent safety belt for overhead working according to claim 1, wherein the belt body further comprises a lubricant and a flame retardant, wherein the lubricant is formed by compounding ethylene bis stearamide and calcium stearate according to a mass ratio of 1:1, and the flame retardant is a halogen-free intumescent flame retardant and is formed by compounding ammonium polyphosphate, pentaerythritol and melamine according to a mass ratio of 3:1:1.
  9. 9. The intelligent safety belt for the high-altitude operation according to claim 1, wherein the preparation process of the intelligent safety belt for the high-altitude operation comprises the following steps: S1, adding modified polyester fiber, modified polyurethane elastomer, modified nano silicon dioxide, composite conductive filler, organic montmorillonite, an antioxidant, an ultraviolet absorber and a toughening agent into a high-speed mixer, and mixing for 20 minutes at the rotation speed of 800-1200 r/min and the temperature of 80-100 ℃ to obtain a premix; s2, adding the premix into a double-screw extruder, extruding, water-cooling and granulating to obtain composite material particles; s3, adding the composite material particles into a spinning machine, setting the spinning temperature to 185-205 ℃, the spinning speed to 800-1200 m/min, and the aperture of a spinneret plate to 0.2-0.4 mm, and spinning, stretching and shaping to obtain composite material fibers; s4, weaving the composite material fibers into a safety belt base fabric by adopting a plain weaving process, wherein the weaving density is 30-50 pieces/cm in the warp direction and 25-40 pieces/cm in the weft direction, then hot-pressing and shaping the base fabric at 130 ℃ for 15 minutes, shaping pressure is 1.0MPa, and finally performing edge stitching and fitting assembly to obtain the intelligent safety belt for high-altitude operation.
  10. 10. The intelligent safety belt for high-altitude operation according to claim 1, wherein in the step S3, the spun composite fiber is treated in an atmospheric pressure plasma treatment device with argon as a working gas, the gas flow is 15L/min, the treatment power is 700W, the treatment time is 20S, the contact angle of the fiber surface is reduced from 70-80 degrees to 30-40 degrees, and the bonding force between the fibers is improved.

Description

Intelligent safety belt for high-altitude operation Technical Field The invention relates to the technical field of safety, in particular to an intelligent safety belt for overhead operation. Background The application number is 201811614146.X, a Chinese patent document discloses a polyester industrial yarn for a safety belt for high-altitude operation and a preparation method thereof, wherein modified polyester melt is subjected to solid-phase polycondensation tackifying, melting, metering, extruding, cooling, oiling, stretching, heat setting and winding to obtain the polyester industrial yarn for the safety belt for high-altitude operation, and the preparation method of the modified polyester before the solid-phase polycondensation tackifying comprises the steps of uniformly mixing terephthalic acid, ethylene glycol, dihydric alcohol with a trimethylsilyl side group, hexanediol with a tert-butyl side group and zinc oxide powder, then sequentially carrying out esterification reaction and polycondensation reaction, wherein the light fastness of the polyester industrial yarn for the safety belt for high-altitude operation is 7-8 levels, the ultraviolet transmittance is less than 5%, the dye uptake under the temperature condition of 130 ℃ is 88.4-93.7%, and the K/S value is 24.24-26.56. The method has simple process and the prepared polyester industrial yarn has good dyeing property. However, the polyester industrial yarn for the high-altitude operation safety belt and the preparation method thereof have some problems, for example, the existing safety belt mostly adopts common polyester fiber, nylon and other base materials, the tensile strength is generally lower than 800MPa, the breaking elongation is less than 30%, the fiber breakage is easy to occur under the high-altitude falling impact load, the impact force cannot be effectively buffered, the safety protection loophole exists, the common material is easy to age and degrade under the outdoor high-temperature, low-temperature and ultraviolet irradiation environment, the service life of the safety belt is shortened, the existing formula lacks a modifying component with rigidity and elasticity, the impact force is intensively transmitted to a human body due to the lack of the rigid component during the falling impact, and the existing safety belt material has poor chemical corrosion resistance and cannot guarantee the operation safety under the complex environment in special high-altitude operation scenes such as greasy dirt, acid and the like. Disclosure of Invention Based on the technical problems of insufficient mechanical properties of a base material, poor weather resistance and durability, unbalanced impact resistance and buffering performance and lack of special environmental adaptability in the prior art, the invention provides an intelligent safety belt for overhead operation. The intelligent safety belt for the high-altitude operation comprises a safety belt main body for the high-altitude operation and an intelligent safety belt monitor fixed on the safety belt main body for the high-altitude operation, wherein the safety belt main body for the high-altitude operation comprises a belt body and a metal connecting piece, the metal connecting piece is connected with all parts of the belt body, and the belt body comprises, by weight, 55-75 parts of modified polyester fiber, 15-25 parts of modified polyurethane elastomer, 2-7 parts of modified nano silicon dioxide, 1-4 parts of composite conductive filler, 1-5 parts of organic montmorillonite, 0.5-1.5 parts of antioxidant, 0.2-1.5 parts of ultraviolet absorber and 1-4 parts of toughening agent, and the prepared safety belt for the high-altitude operation not only realizes breakthrough in core performances such as tensile strength, impact absorption, wear resistance and aging resistance, but also has the functions of conductivity, flame retardance, chemical corrosion resistance and the like, can adapt to the requirements of high-altitude operation, and simultaneously has stable and controllable process, high production efficiency, good practical and high practical and practical values, and better market protection value, and can be applied to the market. Preferably, the modified polyester fiber is prepared by pouring the polyester fiber into 10wt% sodium hydroxide solution at the temperature of 60-80 ℃, performing alkali deweighting treatment for 1 hour, washing to be neutral, immersing the polyester fiber into 4wt% silane coupling agent ethanol solution, soaking for 3 hours at the constant temperature of 50 ℃, and then drying for 4 hours at the temperature of 120 ℃ to obtain the modified polyester fiber, so that the modification effect can be ensured. Preferably, the modified polyurethane elastomer is prepared by mixing the polyurethane with 6% of nano hydroxyapatite by mass fraction after the polyurethane is blocked by isocyanate and reacting for 1 hour at 90 ℃ and ensures the product quality of the