High-temperature-resistant woven belt and preparation method thereof

Abstract

The invention discloses a high-temperature-resistant woven belt and a preparation method thereof, and relates to the technical field of textiles. The high-temperature-resistant woven belt prepared by the invention is prepared by weaving modified PET fibers by a weaving machine, and the modified PET fibers are prepared by slicing, melting and spinning modified PET; the modified PET is prepared by reacting a 5-hydroxyl isophthalic acid derivative, cyclohexanedimethanol and a self-made antibacterial agent, and the 5-hydroxyl isophthalic acid derivative is prepared by reacting 5-hydroxyl isophthalic acid with ethanol for esterification, then carrying out ring-opening reaction with epoxy chloropropane and then reacting with epoxy polysiloxane, so that the heat resistance and toughness of the modified PET fiber are enhanced; the self-made antibacterial agent is prepared by reacting chitosan with hydroxyphenyl terpyridyl, and the hydroxyphenyl terpyridyl is prepared by reacting p-hydroxybenzaldehyde with 2-acetylpyridine, so that the antibacterial property and the thermal stability of the woven belt are further ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of textiles, and specifically to a high-temperature resistant braided belt and a preparation method thereof. Background Art

[0002] With the development of modern industry and construction technology, fire scenarios have become increasingly complex and severe, posing higher requirements for the protective equipment of high-altitude workers. In high-altitude operations, braided belts are one of the indispensable important equipment. As an important fire-fighting equipment, the research and application of high-temperature resistant braided belts are of great significance. However, traditional braided belts are prone to thermal damage in high-temperature environments, resulting in reduced strength and even fracture, thus affecting the safety of high-altitude workers.

[0003] With the development of polymer materials, new high-temperature resistant materials have emerged continuously, providing a material basis for the research of high-temperature resistant braided belts. These new materials have excellent high-temperature resistance and chemical stability, and can meet the usage requirements of high-altitude workers in high-temperature and harsh environments. For the performance requirements of equipment, high-temperature resistant braided belts not only need to have good high-temperature resistance, but also require high strength, wear resistance, flexibility, antibacterial properties, etc. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a high-temperature resistant braided belt and a preparation method thereof.

[0005] A technical solution proposed by the present invention to solve the above technical problem is: a high-temperature resistant braided belt is made by braiding modified PET fibers with a braiding machine; the modified PET fibers are obtained by melt spinning of modified PET chips; the modified PET chips are obtained by reacting 5-hydroxyisophthalic acid derivatives, cyclohexanedimethanol with a self-made antibacterial agent.

[0006] Preferably, the mass ratio of the 5-hydroxyisophthalic acid derivatives, cyclohexanedimethanol to the self-made antibacterial agent is 30-50:15-25:3-5.

[0007] Preferably, the 5-hydroxyisophthalic acid derivatives are obtained by esterifying 5-hydroxyisophthalic acid with ethanol, then subjecting it to a ring-opening reaction with epichlorohydrin, and then reacting with epoxy polysiloxane.

[0008] Preferably, the self-made antibacterial agent is obtained by reacting chitosan with hydroxyphenyl terpyridine; the hydroxyphenyl terpyridine is obtained by reacting p-hydroxybenzaldehyde with 2-acetylpyridine.

[0009] Preferably, the preparation method of the high-temperature resistant braided belt includes the following specific steps:

[0010] S1. Mix chitosan, acetic acid and deionized water in a mass ratio of 2 - 5:1:100, stir evenly, then heat up to 60 - 80 °C, add hydroxyphenyl terpyridine which is 4 - 6 times the mass of chitosan, react for 12 - 16 h, filter by suction, and wash successively with ethanol, acetone and deionized water, and freeze-dry at -40 - -60 °C to obtain a self-made antibacterial agent;

[0011] S2. Add 5-hydroxyisophthalic acid derivative, cyclohexanedimethanol, catalyst antimony acetate and stabilizer hydroquinone into the reaction kettle, heat up to 230 - 250 °C, after reacting for 30 - 50 min, add the self-made antibacterial agent, heat up to 255 - 275 °C, and continue to react for 4 - 6 h to obtain modified PET; Extrude the modified PET into strips with an extruder and then slice them, and dry at 80 - 90 °C to obtain modified PET slices;

[0012] S3. Melt-spin the modified PET slices with a screw spinning machine to obtain modified PET fibers; Weave the modified PET fibers with a knitting machine to obtain a high-temperature resistant woven belt.

[0013] Preferably, the intrinsic viscosity of the modified PET slices is 0.72 - 0.75 dL / g.

[0014] Preferably, in the above step S1, the preparation method of hydroxyphenyl terpyridine is: Mix p-hydroxybenzaldehyde, 2-acetylpyridine, potassium hydroxide, ammonia water with a mass fraction of 22 - 28% and absolute ethanol in a mass ratio of 2 - 2.4:4 - 5:2 - 2.2:60:100, heat up to 50 - 52 °C, reflux and react for 6 - 8 h, adjust the pH to 7 - 8 with hydrochloric acid, filter and wash with ethanol 3 - 5 times, and then recrystallize with methanol to obtain hydroxyphenyl terpyridine.

[0015] Preferably, in the above step S2, the preparation method of 5-hydroxyisophthalic acid derivative is: Mix 5-hydroxyisophthalic acid and ethanol in a mass ratio of 1:13 - 15, stir evenly and heat up to 75 - 85 °C, dropwise add concentrated sulfuric acid which is 0.02 - 0.04 times the mass of 5-hydroxyisophthalic acid at a rate of 1 - 3 ml / min, react for 3 - 5 h, cool to room temperature, add sodium hydroxide which is 0.05 - 0.06 times the mass of 5-hydroxyisophthalic acid, react for 30 - 50 min, then add epichlorohydrin which is 0.2 - 0.3 times the mass of 5-hydroxyisophthalic acid, heat up to 82 - 85 °C, reflux and react for 30 - 40 h, then add potassium hydroxide which is 0.08 - 0.12 times the mass of 5-hydroxyisophthalic acid, continue to reflux and react for 24 h, then add epoxy polysiloxane which is 0.1 - 0.3 times the mass of 5-hydroxyisophthalic acid, dropwise add concentrated sulfuric acid which is 0.02 - 0.04 times the mass of 5-hydroxyisophthalic acid at a rate of 1 - 3 ml / min, react for 6 - 8 h, and rotary evaporate to obtain 5-hydroxyisophthalic acid derivative.

[0016] Preferably, in the above step S2, the preparation method of the epoxy polysiloxane is as follows: Mix the hydrogen-containing silicone oil and allyl glycidyl ether at a mass ratio of 1:2 to 2.4, heat up to 80-82 °C, add a catalyst solution of chloroplatinic acid hexahydrate which is 0.04-0.06 times the mass of the hydrogen-containing silicone oil. The chloroplatinic acid hexahydrate solution is a chloroplatinic acid isopropanol solution with a mass fraction of 2-4%. After reacting for 10-14 min, heat up to 86-88 °C and react for 3-4 h, then perform vacuum distillation to obtain the epoxy polysiloxane.

[0017] Preferably, in the above step S2, the mass ratio of the 5-hydroxyisophthalic acid derivative, cyclohexanedimethanol, the self-made antibacterial agent, the catalyst antimony acetate and the stabilizer hydroquinone is 30-50:15-25:3-5:0.015:0.015.

[0018] Preferably, in the above step S3, during melt spinning, the temperature of the screw zone I is 230-235 °C, the temperature of the screw zone II is 278-280 °C, the temperature of the screw zone III is 282-285 °C, the temperature of the screw zone IV is 282-285 °C, and the temperature of the spinneret is 278-280 °C.

[0019] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0020] The high-temperature resistant braided belt of the present invention is made by braiding modified PET fibers with a braiding machine. The modified PET fibers are obtained by melt spinning modified PET chips.

[0021] The modified PET is obtained by reacting a 5-hydroxyisophthalic acid derivative, cyclohexanedimethanol and a self-made antibacterial agent. The 5-hydroxyisophthalic acid derivative is obtained by esterifying 5-hydroxyisophthalic acid with ethanol, then undergoing a ring-opening reaction with epichlorohydrin, and further reacting with epoxy polysiloxane. By combining the rigid benzene ring and the flexible chain segment in the molecular structure, the heat resistance and toughness of the modified PET fibers are enhanced, forming a braided belt with high strength and good thermal stability.

[0022] The self-made antibacterial agent is obtained by reacting chitosan with hydroxyphenyl terpyridine. Hydroxyphenyl terpyridine is obtained by reacting p-hydroxybenzaldehyde with 2-acetylpyridine. A large number of pyridyl groups are introduced onto the chitosan to cooperate with chitosan for antibacterial effect and enhance the adsorption of the self-made antibacterial agent. When the self-made antibacterial agent is added to the modified PET, the self-made antibacterial agent can be evenly dispersed in the modified PET, further ensuring the antibacterial property and thermal stability of the braided belt. Detailed implementation mode

[0023] The present invention will be specifically described below through embodiments. It is necessary to point out here that the following embodiments are only used to further illustrate the present invention and should not be construed as limiting the protection scope of the present invention. Those skilled in the art can make some non-essential improvements and adjustments to the present invention based on the above content of the present invention. Unless otherwise defined, all professional and scientific terms used herein have the same meaning as those familiar to those skilled in the art.

[0024] To more clearly illustrate the method provided by the present invention, the following embodiments are used for detailed description. The test methods for each index of the high-temperature resistant woven tapes prepared in the embodiments and comparative examples are as follows:

[0025] Antibacterial property: The high-temperature resistant woven tape is subjected to a mildew resistance test with reference to GB / T24346. The evaluation of the mildew resistance test results is as follows: Grade 0: No obvious mildew growth under a magnifying glass; Grade 1: Sparse mold growth or local growth, and the coverage area on the sample surface is less than 10%; Grade 2: The coverage area of mold on the sample surface is less than 10%-30%; Grade 3: The coverage area of mold on the sample surface is less than 30%-60%; Grade 4: The coverage area of mold on the sample surface reaches or exceeds 60%.

[0026] Heat resistance: The high-temperature resistant woven tape is subjected to a heat shrinkage rate test with reference to GB / T 43015.

[0027] Mechanical properties: The high-temperature resistant woven tape is subjected to a tensile property test with reference to GB / T3923.1.

[0028] Example 1

[0029] The preparation method of the high-temperature resistant woven tape in this example is as follows:

[0030] S1. p-Hydroxybenzaldehyde, 2-acetylpyridine, potassium hydroxide, ammonia water with a mass fraction of 22%, and absolute ethanol are mixed at a mass ratio of 2:4:2:60:100, heated to 50°C, and refluxed for 6 h. The pH is adjusted to 7 with hydrochloric acid, filtered and washed 3 times with ethanol, and then recrystallized with methanol to obtain hydroxyphenylterpyridine. Chitosan, acetic acid, and deionized water are mixed at a mass ratio of 2:1:100, stirred evenly and heated to 60°C, and hydroxyphenylterpyridine 4 times the mass of chitosan is added, and the reaction is carried out for 12 h. After suction filtration, it is washed successively with ethanol, acetone, and deionized water, and freeze-dried at -40°C to obtain a self-made antibacterial agent;

[0031] S2. Mix the hydrogen-containing silicone oil and allyl glycidyl ether at a mass ratio of 1:2, heat up to 80 °C, add a catalyst of chloroplatinic acid hexahydrate solution which is 0.04 times the mass of the hydrogen-containing silicone oil. The chloroplatinic acid hexahydrate solution is an isopropyl alcohol solution of chloroplatinic acid hexahydrate with a mass fraction of 2%. After reacting for 10 - 14 min, heat up to 86 °C and react for 3 h, then perform vacuum distillation to obtain epoxy polysiloxane; Mix 5-hydroxyisophthalic acid and ethanol at a mass ratio of 1:13, stir evenly and heat up to 75 °C, dropwise add concentrated sulfuric acid which is 0.02 times the mass of 5-hydroxyisophthalic acid at a rate of 1 ml / min, react for 3 h, cool to room temperature, add sodium hydroxide which is 0.05 times the mass of 5-hydroxyisophthalic acid, react for 30 min, then add epichlorohydrin which is 0.2 times the mass of 5-hydroxyisophthalic acid, heat up to 82 °C and reflux for 30 h, then add potassium hydroxide which is 0.08 times the mass of 5-hydroxyisophthalic acid and continue refluxing for 24 h, then add epoxy polysiloxane which is 0.1 times the mass of 5-hydroxyisophthalic acid, dropwise add concentrated sulfuric acid which is 0.02 times the mass of 5-hydroxyisophthalic acid at a rate of 1 ml / min, react for 6 h, and perform rotary evaporation to obtain the 5-hydroxyisophthalic acid derivative; Add the 5-hydroxyisophthalic acid derivative, cyclohexanedimethanol, a catalyst of antimony acetate, and a stabilizer of hydroquinone into the reaction kettle, heat up to 230 °C, react for 30 min, then add the self-made antibacterial agent. The mass ratio of the 5-hydroxyisophthalic acid derivative, cyclohexanedimethanol, the self-made antibacterial agent, the catalyst of antimony acetate, and the stabilizer of hydroquinone is 30:15:3:0.015:0.015, heat up to 255 °C and continue reacting for 4 h to obtain the modified PET; Extrude the modified PET into strips with an extruder and then slice them, and dry them at 80 °C to obtain the modified PET slices;

[0032] S3. Melt-spin the modified PET slices with a screw spinning machine. The temperature of the first zone of the screw is 230 °C, the temperature of the second zone of the screw is 278 °C, the temperature of the third zone of the screw is 282 °C, the temperature of the fourth zone of the screw is 282 °C, and the temperature of the spinneret is 278 °C to obtain the modified PET fibers; Weave the modified PET fibers with a knitting machine to obtain the high-temperature resistant woven belt.

[0033] Example 2

[0034] In this example, the preparation method of the high-temperature resistant woven belt is as follows:

[0035] S1. Mix p-hydroxybenzaldehyde, 2-acetylpyridine, potassium hydroxide, 26% ammonia water by mass fraction and absolute ethanol in a mass ratio of 2.2:4.5:2.1:60:100, heat up to 51 °C, reflux for 7 h, adjust the pH to 7.5 with hydrochloric acid, filter and wash 4 times with ethanol, then recrystallize with methanol to obtain hydroxyphenylterpyridine; mix chitosan, acetic acid and deionized water in a mass ratio of 4:1:100, stir evenly and heat up to 70 °C, add hydroxyphenylterpyridine 5 times the mass of chitosan, react for 14 h, filter with suction and wash successively with ethanol, acetone and deionized water, and freeze-dry at -50 °C to obtain the self-made antibacterial agent;

[0036] S2. Mix hydrogen-containing silicone oil and allyl glycidyl ether in a mass ratio of 1:2.2, heat up to 81 °C, add a catalyst solution of chloroplatinic acid hexahydrate 0.05 times the mass of the hydrogen-containing silicone oil, and the chloroplatinic acid hexahydrate solution is a 3% mass fraction of chloroplatinic acid isopropanol solution. After reacting for 12 min, heat up to 87 °C and react for 3.5 h, then carry out vacuum distillation to obtain epoxy polysiloxane; mix 5-hydroxyisophthalic acid and ethanol in a mass ratio of 1:14, stir evenly and heat up to 80 °C, dropwise add concentrated sulfuric acid 0.03 times the mass of 5-hydroxyisophthalic acid at a rate of 23 ml / min, react for 4 h, cool to room temperature, add sodium hydroxide 0.055 times the mass of 5-hydroxyisophthalic acid, react for 40 min, then add epichlorohydrin 0.25 times the mass of 5-hydroxyisophthalic acid, heat up to 84 °C and reflux for 35 h, then add potassium hydroxide 0.1 times the mass of 5-hydroxyisophthalic acid and continue reflux for 24 h, then add epoxy polysiloxane 0.2 times the mass of 5-hydroxyisophthalic acid, dropwise add concentrated sulfuric acid 0.03 times the mass of 5-hydroxyisophthalic acid at a rate of 2 ml / min, react for 7 h, and carry out rotary evaporation to obtain 5-hydroxyisophthalic acid derivative; add 5-hydroxyisophthalic acid derivative, cyclohexanedimethanol, catalyst antimony acetate and stabilizer hydroquinone into the reaction kettle, heat up to 240 °C, react for 40 min, then add the self-made antibacterial agent. The mass ratio of 5-hydroxyisophthalic acid derivative, cyclohexanedimethanol, self-made antibacterial agent, catalyst antimony acetate and stabilizer hydroquinone is 40:19:4:0.015:0.015. Heat up to 265 °C and continue to react for 5 h to obtain modified PET; extrude the modified PET into strips with an extruder and then slice, and dry at 85 °C to obtain modified PET slices;

[0037] S3. Melt-spin the modified PET slices with a screw spinning machine, the temperature of the first zone of the screw is 233 °C, the temperature of the second zone of the screw is 279 °C, the temperature of the third zone of the screw is 284 °C, the temperature of the fourth zone of the screw is 284 °C, and the temperature of the spinneret is 279 °C to obtain modified PET fibers; weave the modified PET fibers with a knitting machine to obtain a high-temperature resistant woven belt.

[0038] Example 3

[0039] In this embodiment, the preparation method of the high-temperature resistant braided belt is as follows:

[0040] S1. Mix p-hydroxybenzaldehyde, 2-acetylpyridine, potassium hydroxide, 28% ammonia water by mass fraction, and absolute ethanol according to a mass ratio of 2.4:5:2.2:60:100, heat up to 52 °C, reflux for 8 h, adjust the pH to 8 with hydrochloric acid, filter and wash with ethanol 5 times, and then recrystallize with methanol to obtain hydroxyphenyl terpyridine; mix chitosan, acetic acid, and deionized water according to a mass ratio of 5:1:100, stir evenly and heat up to 80 °C, add hydroxyphenyl terpyridine 6 times the mass of chitosan, react for 16 h, filter with suction and wash successively with ethanol, acetone, and deionized water, and freeze-dry at -60 °C to obtain a self-made antibacterial agent;

[0041] S2. Mix hydrogen-containing silicone oil and allyl glycidyl ether according to a mass ratio of 1:2.4, heat up to 82 °C, add a catalyst solution of chloroplatinic acid hexahydrate 0.06 times the mass of the hydrogen-containing silicone oil. The chloroplatinic acid hexahydrate solution is a 4% chloroplatinic acid isopropanol solution by mass fraction. After reacting for 14 min, heat up to 88 °C and react for 4 h, then perform vacuum distillation to obtain epoxy polysiloxane; mix 5-hydroxyisophthalic acid and ethanol according to a mass ratio of 1:15, stir evenly and heat up to 85 °C, dropwise add concentrated sulfuric acid 0.04 times the mass of 5-hydroxyisophthalic acid at a rate of 3 ml / min, react for 5 h, cool to room temperature, add sodium hydroxide 0.06 times the mass of 5-hydroxyisophthalic acid, react for 50 min, then add epichlorohydrin 0.3 times the mass of 5-hydroxyisophthalic acid, heat up to 85 °C, reflux for 40 h, then add potassium hydroxide 0.12 times the mass of 5-hydroxyisophthalic acid, continue refluxing for 24 h, then add epoxy polysiloxane 0.3 times the mass of 5-hydroxyisophthalic acid, dropwise add concentrated sulfuric acid 0.04 times the mass of 5-hydroxyisophthalic acid at a rate of 3 ml / min, react for 8 h, and perform rotary evaporation to obtain a 5-hydroxyisophthalic acid derivative; add the 5-hydroxyisophthalic acid derivative, cyclohexanedimethanol, a catalyst of antimony acetate, and a stabilizer of hydroquinone into the reaction kettle, heat up to 250 °C, react for 50 min, then add the self-made antibacterial agent. The mass ratio of the 5-hydroxyisophthalic acid derivative, cyclohexanedimethanol, the self-made antibacterial agent, the catalyst of antimony acetate, and the stabilizer of hydroquinone is 50:25:5:0.015:0.015, heat up to 275 °C, and continue to react for 6 h to obtain modified PET; extrude the modified PET into strips with an extruder and then slice, and dry at 90 °C to obtain modified PET slices;

[0042] S3. Melt-spin the modified PET chips using a screw spinning machine. The temperature of the first zone of the screw is 235°C, the temperature of the second zone of the screw is 280°C, the temperature of the third zone of the screw is 285°C, the temperature of the fourth zone of the screw is 285°C, and the temperature of the spinneret is 280°C to obtain modified PET fibers. Weave the modified PET fibers using a knitting machine to obtain a high-temperature resistant woven belt.

[0043] Comparative Example 1

[0044] The preparation method of Comparative Example 1 is the same as that of Example 2. The difference between this high-temperature resistant woven belt and that of Example 2 is that the modified PET is prepared by reacting 5-hydroxyisophthalic acid, cyclohexanedimethanol with a self-made antibacterial agent.

[0045] Comparative Example 2

[0046] The preparation method of Comparative Example 2 is the same as that of Example 2. The difference between this high-temperature resistant woven belt and that of Example 2 is that the 5-hydroxyisophthalic acid derivative is prepared by esterifying 5-hydroxyisophthalic acid with ethanol and then subjecting it to a ring-opening reaction with epichlorohydrin.

[0047] Comparative Example 3

[0048] The preparation method of Comparative Example 3 is the same as that of Example 2. The difference between this high-temperature resistant woven belt and that of Example 2 is that the modified PET is prepared by reacting a 5-hydroxyisophthalic acid derivative with cyclohexanedimethanol.

[0049] Comparative Example 4

[0050] The preparation method of Comparative Example 4 is the same as that of Example 2. The difference between this high-temperature resistant woven belt and that of Example 2 is that the self-made antibacterial agent is only chitosan.

[0051] Effect Example

[0052] The following Table 1 shows the performance test results of the high-temperature resistant woven belts prepared in the examples and comparative examples;

[0053] Table 1

[0054] Mildew-proof grade Heat shrinkage rate (%) Elongation at break (%) Example 1 0 3 30.1 Example 2 0 2 32.7 Example 3 0 2 29.3 Comparative Example 1 0 5 27.9 Comparative Example 2 0 6 27.2 Comparative Example 3 2 3 28.8 Comparative Example 4 1 4 28.5

[0055] From the comparison of the performance data in Table 1, it can be seen that the high-temperature resistant woven belt prepared by the present invention not only has excellent high-temperature resistance and toughness, but also has good antibacterial properties;

[0056] From the comparison of the experimental data of Example 1, Example 2, Example 3 and Comparative Example 1, Comparative Example 2, it can be found that after the 5-hydroxyisophthalic acid reacts with ethanol for esterification, undergoes a ring-opening reaction with epichlorohydrin, and then reacts with epoxy polysiloxane to obtain the 5-hydroxyisophthalic acid derivative, the cyclohexanedimethanol reacts with the self-made antibacterial agent to obtain the modified PET chips. By combining the rigid benzene ring and the flexible chain segment in the molecular structure, the heat resistance and toughness of the modified PET fiber are enhanced, and a woven belt with high strength and good thermal stability is formed.

[0057] From the comparison of the experimental data of Example 1, Example 2, Example 3 and Comparative Example 3, Comparative Example 4, it can be found that a large number of pyridyl groups are introduced onto chitosan to cooperate with chitosan for antibacterial effect and enhance the adsorption of the self-made antibacterial agent. When the self-made antibacterial agent is added to the modified PET, the self-made antibacterial agent can be evenly dispersed in the modified PET, further ensuring the antibacterial property and thermal stability of the woven belt.

[0058] Obviously, the above embodiments are merely examples given for clearly illustrating the embodiments of the present invention, rather than limiting the embodiments of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the embodiments here. And these obvious changes or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. A high-temperature resistant braided belt, characterized in that, It is made by knitting modified PET fibers on a knitting machine; the modified PET fibers are obtained by melt spinning modified PET chips; the modified PET chips are prepared by reacting 5-hydroxyisophthalic acid derivatives, cyclohexanedimethanol with a self-made antibacterial agent.

2. The high-temperature resistant woven belt according to claim 1, characterized in that, The mass ratio of the 5-hydroxyisophthalic acid derivatives, cyclohexanedimethanol and the self-made antibacterial agent is 30-50:15-25:3-5.

3. The high-temperature resistant woven belt according to claim 1, wherein, The 5-hydroxyisophthalic acid derivatives are prepared by reacting 5-hydroxyisophthalic acid with ethanol for esterification, then carrying out a ring-opening reaction with epichlorohydrin, and then reacting with epoxy polysiloxane.

4. A high-temperature resistant woven belt according to claim 1, characterized in that, The self-made antibacterial agent is prepared by reacting chitosan with hydroxyphenyl terpyridine; the hydroxyphenyl terpyridine is prepared by reacting p-hydroxybenzaldehyde with 2-acetylpyridine.

5. The preparation method of a high-temperature resistant woven belt according to claim 1, characterized in that, It includes the following specific steps: S1. Mix chitosan, acetic acid and deionized water in a mass ratio of 2-5:1:100, stir evenly, heat up to 60-80 °C, add hydroxyphenyl terpyridine which is 4-6 times the mass of chitosan, react for 12-16 h, filter with suction, and wash successively with ethanol, acetone and deionized water, and freeze-dry at -40 to -60 °C to obtain the self-made antibacterial agent; S2. Add 5-hydroxyisophthalic acid derivatives, cyclohexanedimethanol, catalyst antimony acetate and stabilizer hydroquinone into the reaction kettle, heat up to 230-250 °C, after reacting for 30-50 min, add the self-made antibacterial agent, heat up to 255-275 °C, and continue to react for 4-6 h to obtain modified PET; extrude the modified PET into strips with an extruder and then slice, and place it in an 80-90 °C dryer to obtain modified PET chips; S3. Melt-spin the modified PET chips with a screw spinning machine to obtain modified PET fibers; knit the modified PET fibers with a knitting machine to obtain a high-temperature resistant knitting belt.

6. The preparation method of a high-temperature resistant braided belt according to claim 5, characterized in that, In the above step S1, the preparation method of hydroxyphenyl terpyridine is: mix p-hydroxybenzaldehyde, 2-acetylpyridine, potassium hydroxide, ammonia water with a mass fraction of 22-28% and absolute ethanol in a mass ratio of 2-2.4:4-5:2-2.2:60:100, heat up to 50-52 °C, reflux and react for 6-8 h, adjust the pH to 7-8 with hydrochloric acid, filter and wash with ethanol 3-5 times, and then recrystallize with methanol to obtain hydroxyphenyl terpyridine.

7. The preparation method of a high-temperature resistant woven belt according to claim 5, characterized in that In the above step S2, the preparation method of the 5-hydroxyisophthalic acid derivative is as follows: Mix 5-hydroxyisophthalic acid and ethanol at a mass ratio of 1:13 to 15, stir evenly and heat up to 75 to 85 °C, and dropwise add concentrated sulfuric acid at a rate of 1 to 3 ml / min, which is 0.02 to 0.04 times the mass of 5-hydroxyisophthalic acid. React for 3 to 5 h, cool to room temperature, add sodium hydroxide which is 0.05 to 0.06 times the mass of 5-hydroxyisophthalic acid, react for 30 to 50 min, then add epichlorohydrin which is 0.2 to 0.3 times the mass of 5-hydroxyisophthalic acid, heat up to 82 to 85 °C, and reflux for 30 to 40 h. Then add potassium hydroxide which is 0.08 to 0.12 times the mass of 5-hydroxyisophthalic acid, continue to reflux for 24 h, and then add epoxy polysiloxane which is 0.1 to 0.3 times the mass of 5-hydroxyisophthalic acid. Dropwise add concentrated sulfuric acid at a rate of 1 to 3 ml / min, which is 0.02 to 0.04 times the mass of 5-hydroxyisophthalic acid, react for 6 to 8 h, and perform rotary evaporation to obtain the 5-hydroxyisophthalic acid derivative.

8. The preparation method of a high-temperature resistant woven belt according to claim 5, characterized in that, In the above step S2, the preparation method of the epoxy polysiloxane is as follows: Mix hydrogen-containing silicone oil and allyl glycidyl ether at a mass ratio of 1:2 to 2.4, heat up to 80 to 82 °C, add a catalyst, chloroplatinic acid hexahydrate solution, which is 0.04 to 0.06 times the mass of the hydrogen-containing silicone oil. The chloroplatinic acid hexahydrate solution is a chloroplatinic acid isopropanol solution with a mass fraction of 2 to 4%. After reacting for 10 to 14 min, heat up to 86 to 88 °C and react for 3 to 4 h, and perform vacuum distillation to obtain the epoxy polysiloxane.

9. The preparation method of a high-temperature resistant braided belt according to claim 5, characterized in that, In the above step S2, the mass ratio of the 5-hydroxyisophthalic acid derivative, cyclohexanedimethanol, self-made antibacterial agent, catalyst antimony acetate and stabilizer hydroquinone is 30 to 50:15 to 25:3 to 5:0.015:0.015; the said.

10. The preparation method of a high-temperature resistant braided belt according to claim 5, characterized in that, In the above step S3, during melt spinning, the temperature of the first zone of the screw is 230 to 235 °C, the temperature of the second zone of the screw is 278 to 280 °C, the temperature of the third zone of the screw is 282 to 285 °C, the temperature of the fourth zone of the screw is 282 to 285 °C, and the temperature of the spinneret is 278 to 280 °C.