Explosion-proof leather computer data connection line and preparation method thereof

Abstract

The application discloses an explosion-proof leather computer data connection line and a preparation method thereof, relates to a data line preparation technology, and is characterized in that a copper conductor is wrapped with a polyimide insulating layer, an aluminum foil shielding layer is wrapped outside the insulating layer, and a modified polyurethane is wrapped outside the aluminum foil shielding layer to form an outer sheath; polyurethane molecules and cellulose molecules in the modified polyurethane form dynamic cross-linking, the bond energy of the dynamic bond is lower than that of the main chain covalent bond, the dynamic bond is preferentially broken under external force, energy is absorbed and crack propagation is prevented, local stress is simultaneously released, molecular chains obtain a sliding space, the main chain is further delayed in breaking, long-chain alkyl is embedded between the polyurethane molecules and the cellulose molecules, the introduction of the long-chain alkyl increases the internal rotation freedom of the molecular chains, the material can more flexibly adjust the conformation when the material is subjected to external force, more energy can be absorbed, material damage can be prevented, and the cellulose structure further enhances the mechanical properties of the material.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of data line preparation, in particular to a computer data connection line with anti-bursting skin and a preparation method thereof. BACKGROUND

[0002] As the physical link for data transmission and power delivery between electronic devices, the reliability of the data connection line is directly related to user experience and device safety. However, traditional data lines, especially consumer electronics data lines, are generally plagued by a persistent problem: the rupture and bursting of the outer insulating sheath. This not only affects the appearance and service life, but also poses serious safety hazards such as short circuit, electric shock, and fire, which has become a technical pain point that needs to be addressed in the industry. Traditional data line sheaths are made of polyvinyl chloride or thermoplastic elastomer PVC, which is low in cost and has moderate flame retardancy, but is relatively hard and lacks flexibility, and repeated bending can cause stress concentration and lead to brittle cracking. TPE is more environmentally friendly, soft, and elastic than PVC, but it lacks wear resistance, tear resistance, and long-term environmental resistance, and can cause surface cracking, damage, and even large-scale bursting after long-term use, affecting safety in use. SUMMARY

[0003] The present application relates to the technical field of data line preparation, in particular to a computer data connection line with anti-bursting skin and a preparation method thereof.

[0004] The object of the present application can be achieved by the following technical solutions:

[0005] A preparation method of a computer data connection line with anti-bursting skin, specifically comprising the following steps:

[0006] Step A1: Mix the modified filler, p-aminobenzoic acid, and toluene, and introduce nitrogen protection, stir and reflux at a speed of 150-200 r / min, a temperature of 110-115℃, and a pH value of 7.5-8 for 3-4 h to obtain a functional filler;

[0007] The reaction process is as follows:

[0008]

[0009]

[0010] Step A2: Mix polytetrahydrofuran ether glycol and diphenyl methane diisocyanate, and introduce nitrogen protection, and react at a speed of 90-120 r / min and a temperature of 80-85℃ for 1-1.5 h to obtain a polyurethane prepolymer;

[0011] Step A3: mixing the polyurethane prepolymer, modified filler and DMF, under the protection of nitrogen, at a rotation speed of 120-150 r / min and a temperature of 80-85℃, after 30-40 min of reaction, adding 1,4-butanediol, and continuing to react for 20-30 min to obtain the modified polyurethane;

[0012] Step A4: wrapping the copper conductor with a polyimide insulating layer, wrapping the aluminum foil shielding layer outside the insulating layer, and wrapping the modified polyurethane outside the aluminum foil shielding layer to form an outer sheath, thereby obtaining the explosion-proof computer data connection line.

[0013] Further, the molar ratio of the vicinal diol and p-aminobenzoic acid on the modified filler in step A1 is 1:1.

[0014] Further, the molar ratio of the polytetrahydrofuran ether diol and diphenyl methane diisocyanate in step A2 is 1:2, and the molecular weight of the polytetrahydrofuran ether diol is 2000.

[0015] Further, the amount of the modified filler added in step A3 is 2% of the mass of the polyurethane prepolymer, and the molar ratio of the polyurethane prepolymer and 1,4-butanediol is 1:1.5.

[0016] Further, the modified filler is prepared by the following steps:

[0017] Step B1: mixing cellulose and sodium hydroxide solution, stirring at a rotation speed of 200-300 r / min and a temperature of 45-55℃ for 2-3 h to obtain activated cellulose, mixing the activated cellulose, pyridine and DMF uniformly, under the protection of nitrogen, stirring at a rotation speed of 150-200 r / min and a temperature of 0-5℃, adding acryloyl chloride, and heating to 60-70℃ to react for 8-10 h to obtain pretreated cellulose;

[0018] The reaction process is as follows:

[0019]

[0020]

[0021] Step B2: mixing the pretreated cellulose, trichlorosilane, chloroplatinic acid and DMF uniformly, under the protection of nitrogen, at a rotation speed of 120-150 r / min and a temperature of 75-85℃, and reacting for 6-8 h to obtain modified cellulose, mixing 2,4,6-trimethylcyclotrisiloxane, 1-octadecene, Karstedt catalyst and toluene uniformly, under the protection of nitrogen, at a rotation speed of 150-200 r / min and a temperature of 80-85℃, and reacting for 8-10 h to obtain modified monomer;

[0022] The reaction process is as follows:

[0023]

[0024]

[0025] Step B3: The dimethyl vinyl silanol lithium and DMF are mixed, stirred at a rotation speed of 150-200 r / min and a temperature of 0℃, and the modified monomer is added, and the temperature is raised to 25-30℃, and the reaction is carried out for 20-24 h, then the modified cellulose is added, and the reaction is continued for 3-5 h, to obtain the functionalized cellulose. The functionalized cellulose, thioglycerol, benzophenone and DMF are uniformly mixed, and the reaction is carried out under the conditions of a rotation speed of 200-300 r / min, a temperature of 20-25℃ and 365 nm ultraviolet light irradiation for 20-30 min, to obtain the modified filler.

[0026] The reaction process is as follows:

[0027]

[0028]

[0029]

[0030]

[0031]

[0032] Further, the use amount ratio of the cellulose and the sodium hydroxide solution in step B1 is 1:20, the mass fraction of the sodium hydroxide solution is 10%, and the use amount ratio of the activated cellulose, pyridine, DMF and acryloyl chloride is 3 g:5 mL:100 mL:3.5 mL.

[0033] Further, the molar ratio of the double bond on the pretreated cellulose and the trichlorosilane in step B2 is 1:1, the use amount of chloroplatinic acid is 1‰ of the mass of the trichlorosilane, the molar ratio of 2,4,6-trimethylcyclotrisiloxane and 1-octadecene is 1:3, and the use amount of Karstedt catalyst is 1‰ of the mass of the 1-octadecene.

[0034] Further, the molar ratio of the dimethyl vinyl silanol lithium, the modified monomer and the Si-Cl bond on the functionalized cellulose in step B3 is 1:5:1, the molar ratio of the double bond on the functionalized cellulose and the thioglycerol is 1:1, and the use amount of benzophenone is 2% of the mass of the thioglycerol.

[0035] The application discloses an explosion-proof computer data connection wire, which is characterized by the following steps: wrapping a copper conductor outside with a polyimide insulating layer, wrapping an aluminum foil shielding layer outside the insulating layer, and wrapping a modified polyurethane outside the aluminum foil shielding layer to form an outer sheath.

[0036] The modified filler is prepared by treating cellulose with a sodium hydroxide solution to obtain activated cellulose, reacting the activated cellulose with acryloyl chloride to make the sodium hydroxyl group on the activated cellulose react with the acyl chloride on the acryloyl chloride, and reacting the pretreated cellulose with trichlorosilane to make the double bond on the pretreated cellulose react with the Si-H bond on the trichlorosilane.

[0037] The modified polyurethane is characterized in that the polyurethane molecules and the cellulose molecules form dynamic cross-linking, the bond energy of the dynamic bond is lower than that of the main chain covalent bond, the dynamic bond is preferentially broken under external force, absorbs energy and prevents crack propagation, releases local stress at the same time, makes the molecular chain obtain a sliding space, and further delays the main chain breakage. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the application will be described below in a clear and complete manner. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.

[0039] Embodiment 1, a preparation method of the explosion-proof computer data connection wire, specifically includes the following steps:

[0040] Step A1: mixing the modified filler, p-aminobenzoic acid and toluene, and then stirring and refluxing under the conditions of a rotation speed of 150 r / min, a temperature of 110℃ and a pH value of 7.5 for 3 h under nitrogen protection to obtain a functional filler;

[0041] Step A2: mixing polytetrahydrofuran ether diol and diphenyl methane diisocyanate, and then reacting under the conditions of a rotation speed of 90 r / min and a temperature of 80℃ for 1 h under nitrogen protection to obtain a polyurethane prepolymer;

[0042] Step A3: mixing the polyurethane prepolymer, the modified filler and DMF, and then reacting under the conditions of a rotation speed of 120 r / min and a temperature of 80℃ for 30 min under nitrogen protection, and then adding 1,4-butanediol and continuing to react for 20 min to obtain a modified polyurethane;

[0043] Step A4: wrapping the copper conductor with a polyimide insulating layer, wrapping the outside of the insulating layer with an aluminum foil shielding layer, and wrapping the outside of the aluminum foil shielding layer with the modified polyurethane to form an outer sheath to obtain an explosion-proof skin computer data connection line.

[0044] The molar ratio of vicinal diol on the modified filler to p-aminobenzoic acid in Step A1 is 1:1.

[0045] The molar ratio of polytetrahydrofuran ether diol to diphenyl methane diisocyanate in Step A2 is 1:2, and the molecular weight of the polytetrahydrofuran ether diol is 2000.

[0046] The amount of the modified filler added in Step A3 is 2% of the mass of the polyurethane prepolymer, and the molar ratio of the polyurethane prepolymer to 1,4-butanediol is 1:1.5.

[0047] The modified filler is prepared by the following steps:

[0048] Step B1: mixing cellulose and a sodium hydroxide solution, and then stirring and treating under the conditions of a rotation speed of 200 r / min and a temperature of 45℃ for 2 h to obtain activated cellulose, and then mixing the activated cellulose, pyridine and DMF uniformly, stirring under the conditions of a rotation speed of 150 r / min and a temperature of 0℃, adding acryloyl chloride, and then heating to 60℃ and reacting for 8 h under nitrogen protection to obtain pretreated cellulose;

[0049] Step B2: the pretreated cellulose, trichlorosilane, chloroplatinic acid and DMF were mixed uniformly, and then were protected by nitrogen, and were reacted for 6h under the conditions of 120r / min of rotation speed and 75℃ of temperature to prepare modified cellulose; 2,4,6-trimethyltrisiloxane, 1-octadecene, Karstedt catalyst and toluene were mixed uniformly, and then were protected by nitrogen, and were reacted for 8h under the conditions of 150r / min of rotation speed and 80℃ of temperature to prepare modified monomer;

[0050] Step B3: the dimethylvinylsilanol lithium and DMF were mixed, and then were stirred under the conditions of 150r / min of rotation speed and 0℃ of temperature, and then the modified monomer was added, and then the temperature was increased to 25℃, and then the reaction was carried out for 20h, and then the modified cellulose was added, and then the reaction was carried out for 3h to prepare functionalized cellulose; the functionalized cellulose, thio-glycerol, benzophenone and DMF were mixed uniformly, and then were reacted for 20min under the conditions of 200r / min of rotation speed, 20℃ of temperature and 365nm ultraviolet light irradiation to prepare modified filler.

[0051] The use amount ratio of the cellulose in step B1 to the sodium hydroxide solution was 1:20, the mass fraction of the sodium hydroxide solution was 10%, and the use amount ratio of the activated cellulose, pyridine, DMF and acryloyl chloride was 3g:5mL:100mL:3.5mL.

[0052] The molar ratio of the double bond on the pretreated cellulose in step B2 to trichlorosilane was 1:1, the use amount of chloroplatinic acid was 1‰ of the mass of trichlorosilane, the molar ratio of 2,4,6-trimethyltrisiloxane to 1-octadecene was 1:3, and the use amount of Karstedt catalyst was 1‰ of the mass of 1-octadecene.

[0053] The molar ratio of the dimethylvinylsilanol lithium, the modified monomer and the Si-Cl bond on the functionalized cellulose in step B3 was 1:5:1, the molar ratio of the double bond on the functionalized cellulose to thio-glycerol was 1:1, and the use amount of benzophenone was 2% of the mass of thio-glycerol.

[0054] Embodiment 2, a preparation method of an anti-explosion skin computer data connection line, specifically comprising the following steps:

[0055] Step A1: the modified filler, p-aminobenzoic acid and toluene were mixed, and then were protected by nitrogen, and were stirred and refluxed for 3.5h under the conditions of 150r / min of rotation speed, 115℃ of temperature and 7.5 of pH value to prepare functional filler;

[0056] Step A2: the polytetrahydrofuran ether glycol and diphenylmethane diisocyanate were mixed, and then were protected by nitrogen, and were reacted for 1.3h under the conditions of 90r / min of rotation speed and 85℃ of temperature to prepare polyurethane prepolymer;

[0057] Step A3: mixing the polyurethane prepolymer, modified filler and DMF, under the protection of nitrogen, at a rotation speed of 150 r / min and a temperature of 80℃, after 35 min of reaction, adding 1,4-butanediol, and continuing to react for 25 min to obtain the modified polyurethane;

[0058] Step A4: wrapping the copper conductor with a polyimide insulating layer, wrapping the outside of the insulating layer with an aluminum foil shielding layer, wrapping the outside of the aluminum foil shielding layer with the modified polyurethane to form an outer sheath, and obtaining the explosion-proof computer data connection line.

[0059] The molar ratio of the vicinal diol on the modified filler to the p-aminobenzic acid in Step A1 is 1:1.

[0060] The molar ratio of the polytetrahydrofuran ether diol to the diphenyl methane diisocyanate in Step A2 is 1:2, and the molecular weight of the polytetrahydrofuran ether diol is 2000.

[0061] The amount of the modified filler added in Step A3 is 2% of the mass of the polyurethane prepolymer, and the molar ratio of the polyurethane prepolymer to 1,4-butanediol is 1:1.5.

[0062] The modified filler is prepared by the following steps:

[0063] Step B1: mixing cellulose and a sodium hydroxide solution, stirring at a rotation speed of 300 r / min and a temperature of 50℃ for 2 h to obtain activated cellulose, uniformly mixing the activated cellulose, pyridine and DMF, stirring under the protection of nitrogen at a rotation speed of 200 r / min and a temperature of 0℃, adding acryloyl chloride, heating to 65℃, and reacting for 9 h to obtain pretreated cellulose;

[0064] Step B2: uniformly mixing the pretreated cellulose, trichlorosilane, chloroplatinic acid and DMF, stirring under the protection of nitrogen at a rotation speed of 120 r / min and a temperature of 80℃ for 7 h to obtain modified cellulose, uniformly mixing 2,4,6-trimethylcyclotrisiloxane, 1-octadecene, Karstedt catalyst and toluene, stirring under the protection of nitrogen at a rotation speed of 150 r / min and a temperature of 85℃ for 9 h to obtain a modified monomer;

[0065] Step B3: mixing dimethylvinylsilanol lithium and DMF, stirring at a rotation speed of 150 r / min and a temperature of 0℃, adding the modified monomer, heating to 30℃, reacting for 22 h, adding the modified cellulose, and continuing to react for 4 h to obtain functionalized cellulose, uniformly mixing the functionalized cellulose, thioglycerol, benzophenone and DMF, stirring at a rotation speed of 200 r / min and a temperature of 25℃, and irradiating under the condition of 365 nm ultraviolet light for 25 min to obtain the modified filler.

[0066] The cellulose and sodium hydroxide solution in step B1 are used in a ratio of 1:20, the mass fraction of the sodium hydroxide solution is 10%, and the activated cellulose, pyridine, DMF and acryloyl chloride are used in a ratio of 3g:5mL:100mL:3.5mL.

[0067] The molar ratio of the double bond on the pretreated cellulose in step B2 and the trichlorosilane is 1:1, the amount of chloroplatinic acid is 1‰ of the mass of the trichlorosilane, the molar ratio of the 2,4,6-trimethylcyclotrisiloxane and the 1-octadecene is 1:3, and the amount of Karstedt catalyst is 1‰ of the mass of the 1-octadecene.

[0068] The molar ratio of the dimethylvinylsilanol lithium in step B3, the modified monomer and the Si-Cl bond on the functionalized cellulose is 1:5:1, the molar ratio of the double bond on the functionalized cellulose and the thio-glycerol is 1:1, and the amount of benzophenone is 2% of the mass of the thio-glycerol.

[0069] Embodiment 3, a method for preparing an explosion-proof computer data connection line, specifically comprising the following steps:

[0070] Step A1: mixing the modified filler, p-aminobenzoic acid and toluene, introducing nitrogen protection, stirring under the conditions of a rotation speed of 200r / min, a temperature of 115℃ and a pH value of 8, refluxing for 4h, and obtaining a functional filler;

[0071] Step A2: mixing the polytetrahydrofuran ether diol and diphenyl methane diisocyanate, introducing nitrogen protection, reacting under the conditions of a rotation speed of 120r / min and a temperature of 85℃ for 1.5h, and obtaining a polyurethane prepolymer;

[0072] Step A3: mixing the polyurethane prepolymer, the modified filler and DMF, introducing nitrogen protection, reacting under the conditions of a rotation speed of 150r / min and a temperature of 85℃ for 40min, adding 1,4-butanediol, and continuing to react for 30min, and obtaining a modified polyurethane;

[0073] Step A4: wrapping the copper conductor with a polyimide insulating layer, wrapping an aluminum foil shielding layer outside the insulating layer, wrapping the modified polyurethane outside the aluminum foil shielding layer to form an outer sheath, and obtaining an explosion-proof computer data connection line.

[0074] The molar ratio of the vicinal diol on the modified filler in step A1 and the p-aminobenzoic acid is 1:1.

[0075] The molar ratio of the polytetrahydrofuran ether diol and the diphenyl methane diisocyanate in step A2 is 1:2, and the molecular weight of the polytetrahydrofuran ether diol is 2000.

[0076] The modified filler is added in an amount of 2% of the mass of the polyurethane prepolymer, and the molar ratio of the polyurethane prepolymer to 1,4-butanediol is 1:1.5.

[0077] The modified filler is prepared by the following steps:

[0078] Step B1: The cellulose and sodium hydroxide solution are mixed, stirred at a rotation speed of 300 r / min and a temperature of 55℃ for 3 h to obtain activated cellulose, and then the activated cellulose, pyridine and DMF are uniformly mixed, protected by nitrogen, stirred at a rotation speed of 200 r / min and a temperature of 5℃, acryloyl chloride is added, the temperature is raised to 70℃, and the reaction is carried out for 10 h to obtain pretreated cellulose;

[0079] Step B2: The pretreated cellulose, trichlorosilane, chloroplatinic acid and DMF are uniformly mixed, protected by nitrogen, the reaction is carried out at a rotation speed of 150 r / min and a temperature of 85℃ for 8 h to obtain modified cellulose, and then 2,4,6-trimethylcyclotrisiloxane, 1-octadecene, Karstedt catalyst and toluene are uniformly mixed, protected by nitrogen, the reaction is carried out at a rotation speed of 200 r / min and a temperature of 85℃ for 10 h to obtain a modified monomer;

[0080] Step B3: The dimethylvinylsilanol lithium and DMF are mixed, stirred at a rotation speed of 150-200 r / min and a temperature of 0℃, the modified monomer is added, the temperature is raised to 25-30℃, the reaction is carried out for 20-24 h, then the modified cellulose is added, and the reaction is continued for 3-5 h to obtain functionalized cellulose, and then the functionalized cellulose, thio-glycerol, benzophenone and DMF are uniformly mixed, the reaction is carried out under the condition of a rotation speed of 200-300 r / min, a temperature of 20-25℃ and 365 nm ultraviolet light irradiation for 20-30 min to obtain the modified filler.

[0081] The use amount ratio of the cellulose to the sodium hydroxide solution in step B1 is 1:20, the mass fraction of the sodium hydroxide solution is 10%, and the use amount ratio of the activated cellulose, pyridine, DMF and acryloyl chloride is 3 g:5 mL:100 mL:3.5 mL.

[0082] The molar ratio of the double bond on the pretreated cellulose to the trichlorosilane in step B2 is 1:1, the use amount of the chloroplatinic acid is 1‰ of the mass of the trichlorosilane, the molar ratio of the 2,4,6-trimethylcyclotrisiloxane to the 1-octadecene is 1:3, and the use amount of the Karstedt catalyst is 1‰ of the mass of the 1-octadecene.

[0083] The molar ratio of dimethyl vinyl silanol lithium described in step B3, modified monomer and Si-Cl bond on the functional cellulose is 1:5:1, the molar ratio of double bond on the functional cellulose and thio glycerol is 1:1, and the amount of benzophenone is 2% of the mass of thio glycerol.

[0084] Comparative Example 1, this comparative example uses polyvinyl alcohol instead of cellulose compared with Example 1, and the remaining steps are the same.

[0085] Comparative Example 2, this comparative example uses pretreated cellulose instead of functional cellulose compared with Example 1, and the remaining steps are the same.

[0086] Comparative Example 3, this comparative example uses modified filler instead of functional filler compared with Example 1, and the remaining steps are the same.

[0087] The modified polyurethane prepared in Examples 1-3 and Comparative Examples 1-3 is tested for Shore A and D values according to the standard GB / T2411-2008, and the modified polyurethane is made into a standard dumbbell-shaped tensile sample with a thickness of 2mm, and the tensile strength is detected under the conditions of a tensile rate of 10mm / min and a gauge length of 20mm. The detection results are shown in Table 1.

[0088] Table 1

[0089] Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Hardness A value 73.3 73.5 73.5 64.1 78.8 77.4 Hardness B value 23.8 24.1 23.9 21.3 30.1 28.8 Tensile strength MPa 49.37 49.81 50.02 31.24 22.67 34.48

[0090] As can be seen from Table 1, the present application has good mechanical effect, so that the data connection line has good explosion-proof skin effect.

[0091] The above is only an example and description of the concept of the present application, and those skilled in the art can make various modifications or supplements to the described specific embodiments or use similar ways to replace, as long as they do not deviate from the concept of the present application or exceed the scope defined by the present claims, and should belong to the protection scope of the present application.

Claims

1. A method for preparing an explosion-proof computer data cable, characterized in that: Specifically, the steps include the following: Step A1: Mix the modified filler, p-aminophenylboronic acid and toluene, purge with nitrogen for protection, stir and reflux to obtain the functional filler; Step A2: Mix polytetrahydrofuran ether diol and diphenylmethane diisocyanate, purge with nitrogen gas, and react to obtain a polyurethane prepolymer. Step A3: Mix polyurethane prepolymer, functional filler and DMF, and after the reaction is carried out under nitrogen protection, add 1,4-butanediol and continue the reaction to obtain modified polyurethane. Step A4: Wrap a polyimide insulation layer around the outside of the copper conductor, wrap an aluminum foil shielding layer around the insulation layer, and wrap a modified polyurethane outer sheath around the aluminum foil shielding layer to form an outer sheath, thus obtaining an explosion-proof computer data connection cable. The modified filler is prepared by the following steps: Step B1: Mix and stir cellulose and sodium hydroxide solution to obtain activated cellulose. Mix activated cellulose, pyridine and DMF evenly, purge with nitrogen for protection, stir and add acryloyl chloride, heat and react to obtain pretreated cellulose. Step B2: Mix pretreated cellulose, trichlorosilane, chloroplatinic acid and DMF evenly, purge with nitrogen, and react to obtain modified cellulose. Mix 2,4,6-trimethylcyclotrisiloxane, 1-octadecene, caster catalyst and toluene evenly, purge with nitrogen, and react to obtain modified monomer. Step B3: Mix lithium dimethylvinylsilane and DMF, stir and add modified monomers, heat and react, then add modified cellulose and continue the reaction to obtain functionalized cellulose. Mix functionalized cellulose, thioglycerol, benzophenone and DMF and irradiate with ultraviolet light to obtain modified filler.

2. The method for preparing the explosion-proof computer data cable according to claim 1, characterized in that: The molar ratio of 1:1 of vicinal diol and p-aminophenylboronic acid on the modified filler described in step A1 is 1:

1.

3. The method for preparing the explosion-proof computer data cable according to claim 1, characterized in that: The molar ratio of polytetrahydrofuran ether diol and diphenylmethane diisocyanate in step A2 is 1:

2.

4. The method for preparing the explosion-proof computer data cable according to claim 1, characterized in that: The amount of functional filler added in step A3 is 2% of the mass of the polyurethane prepolymer, and the molar ratio of polyurethane prepolymer to 1,4-butanediol is 1:1.

5.

5. The method for preparing the explosion-proof computer data cable according to claim 1, characterized in that: The ratio of cellulose to sodium hydroxide solution in step B1 is 1:20, and the ratio of activated cellulose, pyridine, DMF and acryloyl chloride is 3g:5mL:100mL:3.5mL.

6. The method for preparing the explosion-proof computer data cable according to claim 1, characterized in that: In step B2, the molar ratio of double bonds and trichlorosilane on the pretreated cellulose is 1:1, and the molar ratio of 2,4,6-trimethylcyclotrisiloxane and 1-octadecene is 1:

3.

7. The method for preparing the explosion-proof computer data cable according to claim 1, characterized in that: In step B3, the molar ratio of lithium dimethylvinylsilane, modified monomer, and Si-Cl bond on functionalized cellulose is 1:5:1, and the molar ratio of double bond on functionalized cellulose to thioglycerol is 1:

1.

8. A type of explosion-proof computer data cable, characterized in that: Prepared according to any one of the preparation methods described in claims 1-7.

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