Civil building high flame-retardant cable and preparation method thereof

Abstract

The application relates to the technical field of flame-retardant cables, and particularly discloses a high-flame-retardant cable for civil buildings, which is characterized by containing low-density polyethylene, a flame-retardant synergistic agent, a directional treatment liquid and nano additives, epoxy resin, and the mass ratio of the low-density polyethylene, the flame-retardant synergistic agent, the directional treatment liquid and the nano additives, epoxy resin is (10-15):(3-6):(14-18):(2-4):2. The high-flame-retardant cable is prepared by taking low-density polyethylene and epoxy resin as the base material, synergistically combining the flame-retardant synergistic agent and the nano additives, and coating the hydroxyapatite in the directional treatment liquid in the flame-retardant material after modification to further retard the flame. Meanwhile, the raw materials of the product are synergistically combined, the flame-retardant synergistic agent, the nano additives and the raw materials of the directional treatment liquid are synergistically enhanced, and the corrosion resistance and temperature resistance of the product are improved.

Description

Technical Field

[0001] This invention relates to the field of flame-retardant cable technology, specifically to a high flame-retardant cable for civil buildings and its preparation method. Background Technology

[0002] Flame-retardant cables are cables that, under specified test conditions, when a sample is burned, and after the test fire source is removed, the flame spreads only within a limited area, and the remaining flames or embers self-extinguish within a limited time. Their fundamental characteristic is that while they may be damaged and unable to function in a fire, they can prevent the spread of fire. In simpler terms, if an electrical wire catches fire, it can limit the burning to a localized area, preventing it from spreading and protecting other equipment, thus avoiding greater losses. Fire-resistant cables and flame-retardant cables operate on different principles. Halogen-containing cables rely on the flame-retardant effect of halogens, while halogen-free cables extinguish flames by releasing water to lower the temperature. Fire-resistant cables rely on the fire-resistant and heat-resistant properties of mica materials in the refractory layer to ensure normal operation even in a fire.

[0003] Existing flame-retardant cables exhibit reduced flame-retardant performance under acid corrosion and high-temperature conditions, and their flame-retardant, acid corrosion, and high-temperature resistance properties are not coordinated. The technical point of this invention is how to coordinate and improve these properties. Based on this, this invention provides a high flame-retardant cable for civil buildings and its preparation method. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the purpose of this invention is to provide a high flame-retardant cable for civil buildings and its preparation method, so as to solve the problems mentioned in the background art.

[0005] The present invention solves the technical problem by adopting the following technical solution:

[0006] This invention provides a high flame-retardant cable for civil buildings, the high flame-retardant cable comprising low-density polyethylene, flame-retardant co-component, special treatment liquid, nano-additive, and epoxy resin, wherein the mass ratio of low-density polyethylene, flame-retardant co-component, special treatment liquid, nano-additive, and epoxy resin is (10-15):(3-6):(14-18):(2-4):2.

[0007] Preferably, the flame retardant co-formulator is prepared by:

[0008] Add 20-30 parts of shell powder to 45-55 parts of hydrochloric acid solution, then add 2-5 parts of glucuronide and 1-3 parts of dodecylphenol, stir well, and finally add 4-8 parts of sodium alkyl sulfonate and stir thoroughly to obtain a flame retardant co-formulator.

[0009] Preferably, the hydrochloric acid solution has a mass fraction of 5-10%.

[0010] Preferably, the method for preparing the specialized treatment solution is as follows:

[0011] S01: Add the silane coupling agent to the ethanol solution at a weight ratio of 1:5, then add 5-10% of the total amount of chitosan to the silane coupling agent and stir until homogeneous;

[0012] SO2: Add 3-5 parts of hydroxyapatite to 10-15 parts of deionized water, then add 1-3 parts of hydrochloric acid and 0.2-0.4 parts of lanthanum sulfate, stir thoroughly to obtain hydroxyapatite composite solution;

[0013] SO3: Hydroxyapatite composite solution is added to SO1 product at a weight ratio of 1:5 and stirred thoroughly to obtain a specific treatment solution.

[0014] The inventors of this invention discovered that when shell powder was used as a substitute for flame retardant co-component, and no hydroxyapatite composite liquid or nano-additives were added during the preparation of the specialized treatment solution, the performance of the product was significantly reduced.

[0015] The inventors of this invention also discovered that in the preparation of nano-additives, the absence of flake talc powder or the use of graphene as a substitute for flake talc powder significantly reduces the flame retardant properties of the product under corrosion and high-temperature conditions. The nano-additives prepared using the method of this invention and the specialized treatment liquid synergistically enhance the corrosion resistance and flame retardant properties of the product, achieving integrated and coordinated improvement. Furthermore, the use of hydroxyapatite composite liquid as a substitute for hydroxyapatite leads to a deterioration in product performance. Only the hydroxyapatite composite liquid prepared using the method of this invention shows a significant improvement in product performance.

[0016] Preferably, the ethanol solution has a mass fraction of 45-55%.

[0017] Preferably, the silane coupling agent is coupling agent KH560.

[0018] Preferably, the preparation method of the nano-additive is as follows:

[0019] S11: Place the flake talc powder in a preheating treatment at 120-130℃ for 20-30 minutes. After the treatment is completed, cool it to 40℃ and then put it into 4-6 times the amount of water to disperse it evenly, and finally obtain the flake talc powder.

[0020] S21: Nano silica is added to flake talc powder at a weight ratio of 1:4 and stirred thoroughly to obtain nano additives.

[0021] Preferably, the particle size of the nano-silica is 10-20 nm.

[0022] This invention also provides a method for preparing a high flame-retardant cable for civil buildings, characterized by the following steps: adding low-density polyethylene, flame-retardant co-component, nano-additives, and epoxy resin raw materials sequentially into a mixer and mixing for 5-10 minutes; then feeding the mixture into a special treatment liquid and stirring to disperse it evenly; finally washing with water and drying; feeding the mixture into a mixer for internal mixing; after the mixing is completed, extruding and granulating to obtain a high flame-retardant cable for civil buildings.

[0023] Preferably, the mixing process is carried out in the internal mixer for 2-5 minutes.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] This invention relates to a high flame-retardant cable using low-density polyethylene and epoxy resin as base materials. It incorporates flame-retardant co-components and nano-additives, and is further optimized using a specialized treatment solution. The glucuronide and dodecylphenol polyactive groups in the flame-retardant co-components optimize and modify the flame-retardant raw material, shell powder. This is then combined with flake talc powder co-componented with nano-silica. The hydroxyapatite in the specialized treatment solution, after modification, can coat the flame-retardant material, further enhancing its flame retardancy. Simultaneously, the co-components, flame-retardant co-components, nano-additives, and specialized treatment solution work synergistically to enhance the product's corrosion resistance and temperature resistance. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to specific examples. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] This embodiment provides a high flame-retardant cable for civil buildings, comprising low-density polyethylene, flame-retardant co-component, specialized treatment liquid, nano-additives, and epoxy resin, wherein the mass ratio of low-density polyethylene, flame-retardant co-component, specialized treatment liquid, nano-additives, and epoxy resin is (10-15):(3-6):(14-18):(2-4):2.

[0028] The preparation method of the flame retardant co-component in this embodiment is as follows:

[0029] Add 20-30 parts of shell powder to 45-55 parts of hydrochloric acid solution, then add 2-5 parts of glucuronide and 1-3 parts of dodecylphenol, stir well, and finally add 4-8 parts of sodium alkyl sulfonate and stir thoroughly to obtain a flame retardant co-formulator.

[0030] The hydrochloric acid solution in this embodiment has a mass fraction of 5-10%.

[0031] The preparation method of the specific treatment solution in this embodiment is as follows:

[0032] S01: Add the silane coupling agent to the ethanol solution at a weight ratio of 1:5, then add 5-10% of the total amount of chitosan to the silane coupling agent and stir until homogeneous;

[0033] SO2: Add 3-5 parts of hydroxyapatite to 10-15 parts of deionized water, then add 1-3 parts of hydrochloric acid and 0.2-0.4 parts of lanthanum sulfate, stir thoroughly to obtain hydroxyapatite composite solution;

[0034] SO3: Hydroxyapatite composite solution is added to SO1 product at a weight ratio of 1:5 and stirred thoroughly to obtain a specific treatment solution.

[0035] The ethanol solution in this embodiment has a mass fraction of 45-55%.

[0036] In this embodiment, the silane coupling agent is coupling agent KH560.

[0037] The preparation method of the nano-additive in this embodiment is as follows:

[0038] S11: Place the flake talc powder in a preheating treatment at 120-130℃ for 20-30 minutes. After the treatment is completed, cool it to 40℃ and then put it into 4-6 times the amount of water to disperse it evenly, and finally obtain the flake talc powder.

[0039] S21: Nano silica is added to flake talc powder at a weight ratio of 1:4 and stirred thoroughly to obtain nano additives.

[0040] The particle size of the nano-silica in this embodiment is 10-20 nm.

[0041] This embodiment describes a method for preparing a high flame-retardant cable for civil buildings, characterized by the following steps: adding low-density polyethylene, flame-retardant co-component, nano-additives, and epoxy resin raw materials sequentially into a mixer and mixing for 5-10 minutes; then transferring the mixture to a specialized treatment liquid and stirring to disperse it evenly; finally washing with water, drying, and then transferring it to an internal mixer for internal mixing; after internal mixing, extruding and granulating to obtain the high flame-retardant cable for civil buildings.

[0042] In this embodiment, the internal mixer is used for 2-5 minutes of internal mixing.

[0043] Example 1.

[0044] This embodiment provides a high flame-retardant cable for civil buildings, comprising low-density polyethylene, flame-retardant co-component, specialized treatment liquid, nano-additives, and epoxy resin, wherein the mass ratio of low-density polyethylene, flame-retardant co-component, specialized treatment liquid, nano-additives, and epoxy resin is 10:3:14:2:2.

[0045] The preparation method of the flame retardant co-component in this embodiment is as follows:

[0046] Add 20 parts of shell powder to 45 parts of hydrochloric acid solution, then add 2 parts of glucuronide and 1 part of dodecylphenol, stir well, and finally add 4 parts of sodium alkyl sulfonate and stir thoroughly to obtain flame retardant co-formulator.

[0047] The hydrochloric acid solution in this embodiment has a mass fraction of 5%.

[0048] The preparation method of the specific treatment solution in this embodiment is as follows:

[0049] S01: Add the silane coupling agent to the ethanol solution at a weight ratio of 1:5, then add 5% of the total amount of chitosan of the silane coupling agent, and stir until homogeneous;

[0050] S02: Add 3 parts of hydroxyapatite to 10 parts of deionized water, then add 1 part of hydrochloric acid and 0.2 parts of lanthanum sulfate, stir thoroughly to obtain hydroxyapatite composite solution;

[0051] SO3: Hydroxyapatite composite solution is added to SO1 product at a weight ratio of 1:5 and stirred thoroughly to obtain a specific treatment solution.

[0052] The ethanol solution in this embodiment has a mass fraction of 45%.

[0053] In this embodiment, the silane coupling agent is coupling agent KH560.

[0054] The preparation method of the nano-additive in this embodiment is as follows:

[0055] S11: Preheat the flake talc powder at 120℃ for 20 minutes. After the treatment, cool it to 40℃ and then put it into 4 times the amount of water to disperse it evenly. Finally, flake talc powder is obtained.

[0056] S21: Nano silica is added to flake talc powder at a weight ratio of 1:4 and stirred thoroughly to obtain nano additives.

[0057] The particle size of the nano-silica in this embodiment is 10 nm.

[0058] This embodiment describes a method for preparing a high flame-retardant cable for civil buildings, characterized by the following steps: adding low-density polyethylene, flame-retardant co-component, nano-additives, and epoxy resin raw materials sequentially into a mixer and mixing for 5 minutes; then feeding the mixture into a special treatment liquid and stirring to disperse it evenly; finally washing and drying the mixture, and then feeding it into a mixer for internal mixing; after the internal mixing is completed, extruding and granulating the mixture to obtain a high flame-retardant cable for civil buildings.

[0059] In this embodiment, the mixture is internally mixed for 2 minutes.

[0060] Example 2.

[0061] This embodiment provides a high flame-retardant cable for civil buildings, comprising low-density polyethylene, flame-retardant co-component, specialized treatment liquid, nano-additives, and epoxy resin, wherein the mass ratio of low-density polyethylene, flame-retardant co-component, specialized treatment liquid, nano-additives, and epoxy resin is 15:6:18:4:2.

[0062] The preparation method of the flame retardant co-component in this embodiment is as follows:

[0063] Add 30 parts of shell powder to 55 parts of hydrochloric acid solution, then add 5 parts of glucuronide and 3 parts of dodecylphenol, stir well, and finally add 4-8 parts of sodium alkyl sulfonate and stir thoroughly to obtain a flame retardant co-formulator.

[0064] The hydrochloric acid solution in this embodiment has a mass fraction of 10%.

[0065] The preparation method of the specific treatment solution in this embodiment is as follows:

[0066] S01: Add the silane coupling agent to the ethanol solution at a weight ratio of 1:5, then add chitosan at 10% of the total amount of silane coupling agent, and stir until homogeneous;

[0067] SO2: Add 5 parts of hydroxyapatite to 15 parts of deionized water, then add 3 parts of hydrochloric acid and 0.4 parts of lanthanum sulfate, stir thoroughly to obtain hydroxyapatite composite solution;

[0068] SO3: Hydroxyapatite composite solution is added to SO1 product at a weight ratio of 1:5 and stirred thoroughly to obtain a specific treatment solution.

[0069] The ethanol solution in this embodiment has a mass fraction of 55%.

[0070] In this embodiment, the silane coupling agent is coupling agent KH560.

[0071] The preparation method of the nano-additive in this embodiment is as follows:

[0072] S11: Preheat the flake talc powder at 130℃ for 30 minutes. After the treatment, cool it to 40℃ and then put it into 6 times the amount of water to disperse it evenly. Finally, flake talc powder is obtained.

[0073] S21: Nano silica is added to flake talc powder at a weight ratio of 1:4 and stirred thoroughly to obtain nano additives.

[0074] The particle size of the nano-silica in this embodiment is 20 nm.

[0075] This embodiment describes a method for preparing a high flame-retardant cable for civil buildings, characterized by the following steps: adding low-density polyethylene, flame-retardant co-component, nano-additives, and epoxy resin raw materials sequentially into a mixer and mixing for 10 minutes; then feeding the mixture into a special treatment liquid and stirring to disperse it evenly; finally washing and drying the mixture, and then feeding it into a mixer for internal mixing; after the mixing is completed, extruding and granulating the mixture to obtain a high flame-retardant cable for civil buildings.

[0076] In this embodiment, the mixture is internally mixed for 5 minutes.

[0077] Example 3.

[0078] This embodiment provides a high flame-retardant cable for civil buildings, comprising low-density polyethylene, flame-retardant co-component, specialized treatment liquid, nano-additives, and epoxy resin, wherein the mass ratio of low-density polyethylene, flame-retardant co-component, specialized treatment liquid, nano-additives, and epoxy resin is 12.5:4.5:16:3:2.

[0079] The preparation method of the flame retardant co-component in this embodiment is as follows:

[0080] Add 25 parts of shell powder to 50 parts of hydrochloric acid solution, then add 3.5 parts of glucuronide and 2 parts of dodecylphenol, stir well, and finally add 6 parts of sodium alkyl sulfonate and stir thoroughly to obtain a flame retardant co-formulator.

[0081] The hydrochloric acid solution in this embodiment has a mass fraction of 7.5%.

[0082] The preparation method of the specific treatment solution in this embodiment is as follows:

[0083] S01: Add the silane coupling agent to the ethanol solution at a weight ratio of 1:5, then add chitosan (7.5% of the total amount of silane coupling agent) and stir until homogeneous;

[0084] SO2: Add 4 parts of hydroxyapatite to 12.5 parts of deionized water, then add 2 parts of hydrochloric acid and 0.23 parts of lanthanum sulfate, stir thoroughly to obtain hydroxyapatite composite solution;

[0085] SO3: Hydroxyapatite composite solution is added to SO1 product at a weight ratio of 1:5 and stirred thoroughly to obtain a specific treatment solution.

[0086] The ethanol solution in this embodiment has a mass fraction of 50%.

[0087] In this embodiment, the silane coupling agent is coupling agent KH560.

[0088] The preparation method of the nano-additive in this embodiment is as follows:

[0089] S11: Preheat the flake talc powder at 125℃ for 25 minutes. After the treatment, cool it to 40℃ and then put it into 5 times the amount of water to disperse it evenly. Finally, the flake talc powder is obtained.

[0090] S21: Nano silica is added to flake talc powder at a weight ratio of 1:4 and stirred thoroughly to obtain nano additives.

[0091] The particle size of the nano-silica in this embodiment is 15 nm.

[0092] This embodiment describes a method for preparing a high flame-retardant cable for civil buildings, characterized by the following steps: adding low-density polyethylene, flame-retardant co-component, nano-additives, and epoxy resin raw materials sequentially into a mixer and mixing for 7.5 minutes; then feeding the mixture into a special treatment liquid and stirring to disperse it evenly; finally washing and drying the mixture; feeding it into a mixer for internal mixing; after internal mixing, extruding and granulating the mixture to obtain a high flame-retardant cable for civil buildings.

[0093] In this embodiment, the mixing process is carried out in the internal mixer for 3.5 minutes.

[0094] Comparative Example 1.

[0095] Unlike Example 3, the flame retardant co-formulator is replaced with shell powder.

[0096] Comparative Example 2.

[0097] Unlike Example 3, hydroxyapatite composite solution was not added in the preparation of the specific treatment solution.

[0098] Comparative Example 3.

[0099] Unlike Example 3, the hydroxyapatite composite solution uses hydroxyapatite instead of hydroxyapatite.

[0100] Comparative Example 4.

[0101] Unlike Example 3, no nano-additives were added.

[0102] Comparative Example 5.

[0103] Unlike Example 3, no flake talc powder was added in the preparation of the nano-additive.

[0104] Comparative Example 6.

[0105] Unlike Example 3, the flake talc powder is replaced with graphene.

[0106] The performance measurement results of Examples 1-3 and Comparative Examples 1-6 are as follows;

[0107]

[0108] From Examples 1-3 and Comparative Examples 1-6, it was found that...

[0109] The product in Example 3 has excellent flame retardant, corrosion resistance and high temperature resistance. The flame retardant co-formulator is replaced by shell powder, and no hydroxyapatite composite liquid or nano additives are added in the preparation of the special treatment liquid. The product's performance is significantly reduced.

[0110] In the preparation of nano-additives, the absence of flake talc powder or the use of graphene as a substitute significantly reduces the product's flame retardant properties under conditions of corrosion resistance and high temperature resistance. The nano-additives prepared using the method of this invention, along with the specialized treatment liquid, synergistically enhance the product's corrosion resistance and flame retardant properties, achieving integrated and coordinated improvement. Furthermore, the use of hydroxyapatite composite liquid as a substitute for hydroxyapatite leads to a deterioration in product performance. Only the hydroxyapatite composite liquid prepared using the method of this invention shows a significant improvement in product performance.

[0111] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

[0112] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high flame-retardant cable for civil buildings, characterized in that, The high flame-retardant cable comprises low-density polyethylene, flame-retardant co-component, specialized treatment liquid, nano-additives, and epoxy resin, wherein the mass ratio of low-density polyethylene, flame-retardant co-component, specialized treatment liquid, nano-additives, and epoxy resin is (10-15):(3-6):(14-18):(2-4):2; the preparation method of the flame-retardant co-component is as follows: Add 20-30 parts of shell powder to 45-55 parts of hydrochloric acid solution, then add 2-5 parts of glucuronide and 1-3 parts of dodecylphenol, stir evenly, and finally add 4-8 parts of sodium alkyl sulfonate, stir thoroughly to obtain the flame retardant co-formulator; the preparation method of the specific treatment solution is as follows: S01: Add the silane coupling agent to the ethanol solution at a weight ratio of 1:5, then add 5-10% of the total amount of chitosan to the silane coupling agent and stir until homogeneous; SO2: Add 3-5 parts of hydroxyapatite to 10-15 parts of deionized water, then add 1-3 parts of hydrochloric acid and 0.2-0.4 parts of lanthanum sulfate, stir thoroughly to obtain hydroxyapatite composite solution; SO3: Hydroxyapatite composite solution is added to SO1 product at a weight ratio of 1:5 and stirred thoroughly to obtain a specific treatment solution.

2. The high flame-retardant cable for civil buildings according to claim 1, characterized in that, The hydrochloric acid solution has a mass fraction of 5-10%.

3. The high flame-retardant cable for civil buildings according to claim 2, characterized in that, The ethanol solution has a mass fraction of 45-55%.

4. A high flame-retardant cable for civil buildings according to claim 3, characterized in that, The silane coupling agent is coupling agent KH560.

5. A high flame-retardant cable for civil buildings according to claim 1, characterized in that, The preparation method of the nano-additive is as follows: S11: Place the flake talc powder in a preheating treatment at 120-130℃ for 20-30 minutes. After the treatment is completed, cool it to 40℃ and then put it into 4-6 times the amount of water to disperse it evenly, and finally obtain the flake talc powder. S21: Nano silica is added to flake talc powder at a weight ratio of 1:4 and stirred thoroughly to obtain nano additives.

6. A high flame-retardant cable for civil buildings according to claim 5, characterized in that, The particle size of the nano-silica is 10-20 nm.

7. A method for preparing a high flame-retardant cable for civil buildings as described in any one of claims 1-6, characterized in that, The process includes the following steps: adding low-density polyethylene, flame retardant co-component, nano-additives, and epoxy resin raw materials sequentially into a mixer and mixing for 5-10 minutes. Then, the mixture is sent to a special treatment liquid and stirred to disperse evenly. Finally, it is washed with water, dried, and sent to a mixer for internal mixing. After the mixing is completed, the mixture is extruded and granulated to obtain a high flame retardant cable for civil buildings.

8. The method for preparing a high flame-retardant cable for civil buildings according to claim 7, characterized in that, The mixture is stirred in the internal mixer for 2-5 minutes.

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