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CN-117247617-B - High-flame-retardance cable for civil building and preparation method thereof

CN117247617BCN 117247617 BCN117247617 BCN 117247617BCN-117247617-B

Abstract

The invention relates to the technical field of flame-retardant cables, and particularly discloses a high-flame-retardant cable for civil buildings, which is characterized in that the mass ratio of liquid to nano-additive to epoxy resin to low-density polyethylene to flame-retardant synergist to special treatment liquid to nano-additive to epoxy resin is (10-15): 3-6): 14-18): 2-4): 2. The high-flame-retardant cable disclosed by the invention is prepared from the low-density polyethylene and the epoxy resin serving as base materials, and the flame-retardant synergist and the nano additive are matched, so that the modified hydroxyapatite in the special treatment fluid can be coated in the flame retardant to further resist flame, and meanwhile, the raw materials of the product are matched and combined, and the flame-retardant synergist, the nano additive and the special treatment fluid are matched and synergistic, so that the corrosion resistance and the temperature resistance of the product are enhanced.

Inventors

  • CHEN KUI
  • LEI JIE

Assignees

  • 广州澳通电线电缆有限公司

Dates

Publication Date
20260508
Application Date
20230925

Claims (8)

  1. 1. The high-flame-retardant cable for civil buildings is characterized by comprising low-density polyethylene, a flame-retardant synergist, special-direction treatment fluid, a nano additive and epoxy resin, wherein the mass ratio of the low-density polyethylene to the flame-retardant synergist to the special-direction treatment fluid to the nano additive to the epoxy resin is (10-15): 3-6): 14-18): 2-4): 2, and the preparation method of the flame-retardant synergist comprises the following steps: Adding 20-30 parts of shell powder into 45-55 parts of hydrochloric acid solution, then adding 2-5 parts of glucuronolactone and 1-3 parts of dodecylphenol, uniformly stirring, and finally adding 4-8 parts of sodium alkyl sulfonate, and fully stirring to obtain a flame-retardant synergist, wherein the preparation method of the special treatment liquid comprises the following steps: s01, adding a silane coupling agent into an ethanol solution according to a weight ratio of 1:5, then adding chitosan accounting for 5-10% of the total weight of the silane coupling agent, and uniformly stirring; S02, adding 3-5 parts of hydroxyapatite into 10-15 parts of deionized water, then adding 1-3 parts of hydrochloric acid and 0.2-0.4 part of lanthanum sulfate, and stirring thoroughly to obtain a hydroxyapatite composite solution; and S03, adding the hydroxyapatite composite liquid into the S01 product according to the weight ratio of 1:5, and stirring fully to obtain the special treatment liquid.
  2. 2. A civil construction high flame retardant cable according to claim 1, wherein the mass fraction of the hydrochloric acid solution is 5-10%.
  3. 3. A civil construction high flame retardant cable according to claim 2, wherein the mass fraction of the ethanol solution is 45-55%.
  4. 4. A civil construction high flame retardant cable according to claim 3, wherein the silane coupling agent is a coupling agent KH560.
  5. 5. The civil building high flame-retardant cable of claim 1 wherein the preparation method of the nano additive is: S11, preheating flaky talcum powder at 120-130 ℃ for 20-30min, cooling to 40 ℃ after finishing treatment, then sending into 4-6 times of water for uniform dispersion, and finally obtaining flaky talcum powder; s21, adding nano silicon dioxide into the platy talcum powder according to the weight ratio of 1:4, and stirring fully to obtain the nano additive.
  6. 6. The civil construction high flame retardant cable of claim 5 wherein the nanosilica has a particle size of 10-20nm.
  7. 7. A method for preparing the civil construction high-flame-retardant cable according to any one of claims 1-6, which is characterized by comprising the following steps of sequentially adding low-density polyethylene, flame-retardant synergist, nano additive and epoxy resin raw materials into a mixer for mixing for 5-10min, then sending into a special treatment liquid for stirring and dispersing uniformly, finally washing with water, drying, sending into an internal mixer for banburying, ending banburying, extruding and granulating to obtain the civil construction high-flame-retardant cable.
  8. 8. The method for preparing the civil building high-flame-retardant cable, which is characterized by comprising banburying in an internal mixer for 2-5min.

Description

High-flame-retardance cable for civil building and preparation method thereof Technical Field The invention relates to the technical field of flame-retardant cables, in particular to a high flame-retardant cable for civil buildings and a preparation method thereof. Background The flame-retardant cable is characterized in that a sample is burnt under a specified test condition, and after a test fire source is removed, flame spread is only within a limited range, and residual flame or residual burning can be automatically extinguished within a limited time. The essential feature is that in case of fire it is likely to burn out and fail to operate, but the spread of the fire is prevented. In popular terms, the electric wire can limit combustion to a local range in case of fire, does not spread, and can hold other various devices, thereby avoiding larger loss. The principle of fire resistant cables is different from that of flame retardant cables. The fire-resistant cable is characterized in that the fire-resistant cable is made of mica materials in a fire-resistant layer, and the fire-resistant cable is ensured to work normally in case of fire by the fire-resistant effect of halogen. The invention provides a civil building high-flame-retardant cable and a preparation method thereof, wherein the prior flame-retardant cable has poor flame retardant performance under the conditions of acid corrosion and high temperature, and the flame retardant performance, the acid corrosion performance and the high temperature resistance performance are not coordinated, and how to match and coordinate improvement is a technical point of the invention. Disclosure of Invention Aiming at the defects of the prior art, the invention aims to provide a civil building high-flame-retardance cable and a preparation method thereof, so as to solve the problems in the prior art. The invention solves the technical problems by adopting the following technical scheme: The invention provides a civil building high flame-retardant cable which comprises low-density polyethylene, a flame-retardant synergist, special-direction treatment fluid, a nano additive and epoxy resin, wherein the mass ratio of the low-density polyethylene to the flame-retardant synergist to the special-direction treatment fluid to the nano additive to the epoxy resin is (10-15): 3-6): 14-18): 2-4): 2. Preferably, the preparation method of the flame retardant synergist comprises the following steps: adding 20-30 parts of shell powder into 45-55 parts of hydrochloric acid solution, then adding 2-5 parts of glucuronolactone and 1-3 parts of dodecylphenol, uniformly stirring, finally adding 4-8 parts of sodium alkyl sulfonate, and fully stirring to obtain the flame-retardant synergist. Preferably, the mass fraction of the hydrochloric acid solution is 5-10%. Preferably, the preparation method of the specific treatment fluid comprises the following steps: s01, adding a silane coupling agent into an ethanol solution according to a weight ratio of 1:5, then adding chitosan accounting for 5-10% of the total weight of the silane coupling agent, and uniformly stirring; S02, adding 3-5 parts of hydroxyapatite into 10-15 parts of deionized water, then adding 1-3 parts of hydrochloric acid and 0.2-0.4 part of lanthanum sulfate, and stirring thoroughly to obtain a hydroxyapatite composite solution; and S03, adding the hydroxyapatite composite liquid into the S01 product according to the weight ratio of 1:5, and stirring fully to obtain the special treatment liquid. The inventor finds that the flame-retardant synergist adopts shell powder to replace, does not add hydroxyapatite composite liquid and nano additive in the preparation of special treatment liquid, and has obvious reduction effect on the performance of the product; the inventor of the invention also finds that the nano additive prepared by the method has synergistic effect on special treatment liquid without adding flaky talcum powder in the preparation of the nano additive and replacing the flaky talcum powder by graphene, and the flame retardant property of the product is obviously reduced under the conditions of corrosion resistance and high temperature resistance, the corrosion resistance and flame retardant property of the product are jointly enhanced, the integrated coordination improvement is realized, the hydroxyapatite composite liquid is replaced by hydroxyapatite, the performance of the product is in a trend of deterioration, and only the hydroxyapatite composite liquid prepared by the method has obvious effect on improving the performance of the product. Preferably, the mass fraction of the ethanol solution is 45-55%. Preferably, the silane coupling agent is a coupling agent KH560. Preferably, the preparation method of the nano additive comprises the following steps: S11, preheating flaky talcum powder at 120-130 ℃ for 20-30min, cooling to 40 ℃ after finishing treatment, then sending into 4-6 times of water for unifo