Antibacterial material applied to linen fabric and preparation method of antibacterial material

Abstract

The invention relates to the technical field of antibacterial materials, and discloses an antibacterial material applied to linen fabric and a preparation method of the antibacterial material, chitosan, quaternary ammonium salt modified cellulose and modified quaternized thiazole are compounded, and the antibacterial material applied to the linen fabric is obtained. Boron elements, sulfur elements, silicon elements and sodium sulfonate groups in the quaternary ammonium salt modified cellulose and the modified quaternized thiazole have relatively good flame-retardant effects and jointly form a flame-retardant system; the boron element is melted at a high temperature to form a glass body covering layer which covers the surface of a comburent, so that the effect of isolating oxygen and heat is achieved, and the flame-retardant effect is achieved; when the silicon element is heated, a vitreous substance can be generated on the surface of the material, and substance transportation and energy transfer are isolated. The quaternary ammonium salt and the ferrocene group both have good antibacterial effects and have synergistic antibacterial effects. The antibacterial material provided by the invention can significantly improve the quality of the linen fabric.

Description

Technical Field

[0001] The invention relates to the technical field of antibacterial materials, in particular to an antibacterial material applied to linen fabrics and a preparation method thereof. Background Art

[0002] Linen fabrics are widely used in medical, catering, home furnishing and other fields. In medical supplies, surgical gowns and masks made of linen can effectively resist bacterial infection; in the catering industry, linen napkins, aprons, etc. can reduce bacterial cross-infection; but during use, if they encounter flames, they are easy to burn, thus affecting their normal use. Therefore, how to avoid this phenomenon is the key to solving the problem.

[0003] For example, patent CN116285012A discloses a cellulose-based antibacterial material, a preparation method and an application thereof. The invented cellulose-based antibacterial material has a significant antibacterial effect on various Gram-negative and Gram-positive bacteria, and the antibacterial effect has been greatly improved, but its flame retardant effect has not been improved. Therefore, the present invention further optimizes its flame retardancy and antibacterial properties. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies of the prior art, the present invention provides an antibacterial material applied to linen fabrics and a preparation method thereof, which has good antibacterial and flame retardant effects.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: an antibacterial material for linen fabrics, comprising the following components by weight: 5-8 parts by weight of chitosan, 1-4 parts by weight of quaternary ammonium salt-modified boron-containing cellulose, and 2-3 parts by weight of modified quaternized thiazole.

[0008] Preferably, the preparation method of the quaternary ammonium salt modified boron-containing cellulose is:

[0009] Step 1: adding 6-9 parts by weight of cellulose to a sodium hydroxide aqueous solution having a mass fraction of 2-4%, then dropwise adding 12-18 parts by weight of epichlorohydrin and ethanol solvent, stirring and reacting at 60-75° C. to obtain epoxy cellulose;

[0010] Step 2: Add epoxy cellulose and 2,4,6-tris(dimethylaminomethyl)phenol to N,N-dimethylformamide solvent, stir and mix, continue to add boron trifluoride ether catalyst, react at 70-90° C. for 5-7 hours, and then perform reduced pressure distillation and washing to obtain tertiary amino cellulose;

[0011] Step 3: adding tertiary amino cellulose and 1,3-propane sultone to acetone solvent for dissolution, then dropping 2-4% sodium hydroxide solution by mass, reacting at 65-82° C. for 6-10 hours, concentrating under reduced pressure after the reaction to remove the solvent, and recrystallizing the crude product in ethanol to obtain sodium sulfonate modified cellulose;

[0012] Step 4: Add ferrocenylboric acid to toluene solvent, stir and disperse, then add sodium sulfonate to modify cellulose, react at 110-125°C for 9-14 hours, and after the reaction is completed, perform vacuum distillation, filter and dry to obtain quaternary ammonium salt modified boron-containing cellulose.

[0013] Preferably, the reaction time in step 1 is 2-6 hours.

[0014] Preferably, in the step 2, the mass ratio of epoxy cellulose, 2,4,6-tris(dimethylaminomethyl)phenol and boron trifluoride etherate catalyst is 1:1.26-1.45:0.01-0.02.

[0015] Preferably, in step three, the mass ratio of tertiary amino cellulose to 1,3-propane sultone is 1:2.1-2.3.

[0016] Preferably, in step 4, the mass ratio of ferroceneboric acid to sodium sulfonate modified cellulose is 0.6-0.8:1.

[0017] Preferably, the preparation method of the modified quaternized thiazole is:

[0018] S1. Add 10-14 parts by weight of 4-methyl-5-thiazoleethanol and 4-8 parts by weight of trimesoyl chloride to a toluene solvent, stir evenly, continue to add 0.021-0.024 parts by weight of triethylamine catalyst, stir and react at 70-80°C for 10-15h, concentrate under reduced pressure to remove the solvent after the reaction, and then wash the crude product with ether to obtain intermediate 1;

[0019] S2. 3-5 parts by weight of intermediate 1 and 6-10 parts by weight of 6-chloro-1-hexene were added to an isopropanol solvent, and the temperature was raised to 75-85 ° C and refluxed for 10-20h. After the reaction, the solvent was removed by rotary evaporation and recrystallized from ethanol to obtain alkenyl quaternized thiazole;

[0020] S3. Add 9-14 parts by weight of 1,1-bis(dimethylsilyl)iron and 4-6 parts by weight of quaternized alkenyl thiazole and 0.02-0.03 parts by weight of chloroplatinic acid catalyst to N,N-dimethylformamide solvent, react at 60-75°C for 2-4h, and then distill under reduced pressure and wash to obtain modified quaternized thiazole.

[0021] Preferably, the preparation method of the antibacterial material for linen fabric is: adding chitosan, quaternary ammonium salt-modified cellulose, and modified quaternized thiazole into a stirrer, stirring for 10-15 minutes, drying, and compression molding to obtain the antibacterial material for linen fabric.

[0022] (III) Beneficial technical effects

[0023] The invention obtains the antibacterial material applied to linen fabric by adding chitosan, quaternary ammonium salt modified cellulose and modified quaternary ammonium thiazole into a stirrer, stirring, drying and compression molding; the chitosan itself has good antibacterial and flame retardant effects.

[0024] The boron, sulfur, silicon and sodium sulfonate groups in quaternary ammonium salt-modified cellulose and modified quaternary ammonium thiazole all have good flame retardant effects and together constitute a flame retardant system; quaternary ammonium salts and ferrocene groups both have good antibacterial effects and synergistic antibacterial effects. Boron melts at high temperatures to form a glassy covering layer that covers the surface of the burning material, isolating oxygen and heat, and achieving a flame retardant effect; silicon can produce a glassy substance on the surface of the material when heated, isolating material transportation and energy transfer. The sulfur element contained in it can accelerate the carbonization of the material when it burns, promote the formation of a dense carbon layer on the surface of the material, and play a flame retardant effect; sodium sulfonate can promote the release of carbon dioxide and water when it burns, accelerate the carbonization rate of polymer molecules, and promote the cross-linking of polymer molecules. These processes help to improve the flame retardancy of the material.

[0025] The hydroxyl group in 4-methyl-5-thiazoleethanol reacts with the acyl chloride group in trimesoyl chloride to introduce a tertiary amine to obtain intermediate 1, which is then further subjected to a quaternization reaction with 6-chloro-1-hexene to generate a quaternary ammonium salt group. At the same time, the introduced olefin group continues to undergo an addition reaction with the silicon-hydrogen bond in 1,1-di(dimethylsilyl)iron (which also increases the degree of substitution of ferrocene and quaternary ammonium salt, further improving its antibacterial effect), thereby obtaining a modified quaternized thiazole; epoxy cellulose and 2,4,6-tris(dimethylaminomethyl)phenol are reacted to obtain tertiary amino cellulose. The cellulose has more epoxy groups, which increases the degree of substitution of the tertiary amine. The tertiary amine reacts with 1,3-propane sultone to obtain a quaternary ammonium salt, which has a good antibacterial effect. DETAILED DESCRIPTION

[0026] Example 1

[0027] Step 1: Add 6 parts by weight of cellulose to a 2% sodium hydroxide aqueous solution, then dropwise add 12 parts by weight of epichlorohydrin and ethanol solvent, and stir the mixture at 60° C. for 2 hours to obtain epoxy cellulose;

[0028] Step 2: Add epoxy cellulose and 2,4,6-tris(dimethylaminomethyl)phenol to N,N-dimethylformamide solvent, stir and mix, and continue to add boron trifluoride ether catalyst, wherein the mass ratio of epoxy cellulose, 2,4,6-tris(dimethylaminomethyl)phenol and boron trifluoride ether catalyst is 1:1.26:0.01, react at 70°C for 5h, and then perform reduced pressure distillation and washing to obtain tertiary amino cellulose;

[0029] Step 3: adding tertiary amino cellulose and 1,3-propane sultone to acetone solvent for dissolution, wherein the mass ratio of tertiary amino cellulose to 1,3-propane sultone is 1:2.1-2.3, then dropping a 2% sodium hydroxide solution, reacting at 65° C. for 6 hours, concentrating under reduced pressure after the reaction to remove the solvent, and recrystallizing the crude product in ethanol to obtain sodium sulfonate modified cellulose;

[0030] Step 4: adding ferrocenylboric acid to toluene solvent, stirring and dispersing, and then adding sodium sulfonate to modify cellulose, wherein the mass ratio of ferrocenylboric acid to sodium sulfonate to modify cellulose is 0.6:1, reacting at 110°C for 9 hours, and after the reaction is completed, performing reduced pressure distillation, filtering and drying to obtain quaternary ammonium salt modified boron-containing cellulose;

[0031] Step 5: Add 10 parts by weight of 4-methyl-5-thiazoleethanol and 4 parts by weight of trimesoyl chloride to a toluene solvent, stir evenly, continue to add 0.021 parts by weight of triethylamine catalyst, stir and react at 70° C. for 10 hours, concentrate under reduced pressure to remove the solvent after the reaction, and then wash the crude product with ether to obtain intermediate 1;

[0032] Step 6: Add 3 parts by weight of the intermediate 1 and 6 parts by weight of 6-chloro-1-hexene to an isopropanol solvent, heat to 75° C. and reflux for 10 hours, then remove the solvent by rotary evaporation, and recrystallize from ethanol to obtain an olefinic quaternized thiazole;

[0033] Step 7: Add 9 parts by weight of 1,1-bis(dimethylsilyl)iron and 4 parts by weight of alkenyl quaternized thiazole and 0.02 parts by weight of chloroplatinic acid catalyst to N,N-dimethylformamide solvent, react at 60° C. for 2 hours, and then perform reduced pressure distillation and washing to obtain modified quaternized thiazole;

[0034] Step 8: Add 5 parts by weight of chitosan, 1 part by weight of quaternary ammonium salt-modified boron-containing cellulose, and 2 parts by weight of modified quaternized thiazole into a stirrer, stir for 10 minutes, dry, and perform compression molding to obtain an antibacterial material for linen fabrics.

[0035] Example 2

[0036] Step 1: Add 9 parts by weight of cellulose to a 4% sodium hydroxide aqueous solution, then dropwise add 18 parts by weight of epichlorohydrin and ethanol solvent, and stir the mixture at 75° C. for 6 hours to obtain epoxy cellulose;

[0037] Step 2: Add epoxy cellulose and 2,4,6-tris(dimethylaminomethyl)phenol to N,N-dimethylformamide solvent, stir and mix, and continue to add boron trifluoride ether catalyst, wherein the mass ratio of epoxy cellulose, 2,4,6-tris(dimethylaminomethyl)phenol and boron trifluoride ether catalyst is 1:1.45:0.02, react at 90°C for 7h, and then perform reduced pressure distillation and washing to obtain tertiary amino cellulose;

[0038] Step 3: adding tertiary amino cellulose and 1,3-propane sultone to acetone solvent for dissolution, wherein the mass ratio of tertiary amino cellulose to 1,3-propane sultone is 1:2.3, then dropping a 4% sodium hydroxide solution, reacting at 82° C. for 10 hours, and concentrating under reduced pressure to remove the solvent after the reaction, and the crude product is recrystallized in ethanol to obtain sodium sulfonate modified cellulose;

[0039] Step 4: adding ferrocenylboric acid to toluene solvent, stirring and dispersing, and then adding sodium sulfonate to modify cellulose, wherein the mass ratio of ferrocenylboric acid to sodium sulfonate to modify cellulose is 0.8:1, reacting at 125°C for 14 hours, and after the reaction is completed, distilling under reduced pressure, filtering and drying to obtain quaternary ammonium salt modified boron-containing cellulose;

[0040] Step 5: Add 14 parts by weight of 4-methyl-5-thiazoleethanol and 8 parts by weight of trimesoyl chloride to toluene solvent, stir evenly, continue to add 0.024 parts by weight of triethylamine catalyst, stir and react at 80° C. for 15 hours, concentrate under reduced pressure to remove the solvent after the reaction, and then wash the crude product with ether to obtain intermediate 1;

[0041] Step 6: Add 5 parts by weight of the intermediate 1 and 10 parts by weight of 6-chloro-1-hexene to an isopropanol solvent, heat to 85° C. and reflux for 20 hours, then remove the solvent by rotary evaporation, and recrystallize from ethanol to obtain an olefinic quaternized thiazole;

[0042] Step 7: Add 14 parts by weight of 1,1-bis(dimethylsilyl)iron and 6 parts by weight of quaternized alkenyl thiazole and 0.03 parts by weight of chloroplatinic acid catalyst to N,N-dimethylformamide solvent, react at 5°C for 4 hours, and then perform reduced pressure distillation and washing to obtain modified quaternized thiazole;

[0043] Step 8: Add 8 parts by weight of chitosan, 4 parts by weight of quaternary ammonium salt-modified boron-containing cellulose, and 3 parts by weight of modified quaternized thiazole into a blender, stir for 15 minutes, dry, and perform compression molding to obtain an antibacterial material for linen fabrics.

[0044] Example 3

[0045] Step 1: Add 7 parts by weight of cellulose to a 3% sodium hydroxide aqueous solution, then dropwise add 16 parts by weight of epichlorohydrin and ethanol solvent, and stir the mixture at 65° C. for 4 hours to obtain epoxy cellulose;

[0046] Step 2: Add epoxy cellulose and 2,4,6-tris(dimethylaminomethyl)phenol to N,N-dimethylformamide solvent, stir and mix, and continue to add boron trifluoride ether catalyst, wherein the mass ratio of epoxy cellulose, 2,4,6-tris(dimethylaminomethyl)phenol and boron trifluoride ether catalyst is 1:1.35:0.01, react at 80°C for 6h, and then perform reduced pressure distillation and washing to obtain tertiary amino cellulose;

[0047] Step 3: adding tertiary amino cellulose and 1,3-propane sultone to acetone solvent for dissolution, wherein the mass ratio of tertiary amino cellulose to 1,3-propane sultone is 1:2.2, then dropping a 3% sodium hydroxide solution, reacting at 75° C. for 8 hours, and concentrating under reduced pressure to remove the solvent after the reaction, and recrystallizing the crude product in ethanol to obtain sodium sulfonate modified cellulose;

[0048] Step 4: Add ferrocenylboric acid to toluene solvent, stir and disperse, and then add sodium sulfonate to modify cellulose, wherein the mass ratio of ferrocenylboric acid to sodium sulfonate to modify cellulose is 0.7:1, react at 115°C for 12 hours, and after the reaction is completed, perform vacuum distillation, filter and dry to obtain quaternary ammonium salt modified boron-containing cellulose;

[0049] Step 5: Add 13 parts by weight of 4-methyl-5-thiazoleethanol and 4-8 parts by weight of trimesoyl chloride to toluene solvent, stir evenly, continue to add 0.022 parts by weight of triethylamine catalyst, stir and react at 75°C for 13 hours, concentrate under reduced pressure to remove the solvent after the reaction, and then wash the crude product with ether to obtain intermediate 1;

[0050] Step 6: Add 4 parts by weight of the intermediate 1 and 8 parts by weight of 6-chloro-1-hexene to an isopropanol solvent, heat to 80° C. and reflux for 15 hours, then remove the solvent by rotary evaporation, and recrystallize from ethanol to obtain an olefinic quaternized thiazole;

[0051] Step 7: Add 10 parts by weight of 1,1-bis(dimethylsilyl)iron, 5 parts by weight of alkenyl quaternized thiazole, and 0.02 parts by weight of chloroplatinic acid catalyst to N,N-dimethylformamide solvent, react at 75° C. for 3 hours, and then perform reduced pressure distillation and washing to obtain modified quaternized thiazole;

[0052] Step 8: Add 6 parts by weight of chitosan, 3 parts by weight of quaternary ammonium salt-modified boron-containing cellulose, and 2 parts by weight of modified quaternized thiazole into a stirrer, stir for 12 minutes, dry, and perform compression molding to obtain an antibacterial material for linen fabrics.

[0053] Example 4

[0054] Step 1: Add 6 parts by weight of cellulose to a 2% sodium hydroxide aqueous solution, then dropwise add 12 parts by weight of epichlorohydrin and ethanol solvent, and stir the mixture at 60° C. for 2 hours to obtain epoxy cellulose;

[0055] Step 2: Add epoxy cellulose and 2,4,6-tris(dimethylaminomethyl)phenol to N,N-dimethylformamide solvent, stir and mix, and continue to add boron trifluoride ether catalyst, wherein the mass ratio of epoxy cellulose, 2,4,6-tris(dimethylaminomethyl)phenol and boron trifluoride ether catalyst is 1:1.26:0.01, react at 70°C for 5h, and then perform reduced pressure distillation and washing to obtain tertiary amino cellulose;

[0056] Step 3: adding tertiary amino cellulose and 1,3-propane sultone to acetone solvent for dissolution, wherein the mass ratio of tertiary amino cellulose to 1,3-propane sultone is 1:2.3, then dropping a 4% sodium hydroxide solution, reacting at 82° C. for 10 hours, and concentrating under reduced pressure to remove the solvent after the reaction, and the crude product is recrystallized in ethanol to obtain sodium sulfonate modified cellulose;

[0057] Step 4: adding ferrocenylboric acid to toluene solvent, stirring and dispersing, and then adding sodium sulfonate to modify cellulose, wherein the mass ratio of ferrocenylboric acid to sodium sulfonate to modify cellulose is 0.8:1, reacting at 125°C for 14 hours, and after the reaction is completed, distilling under reduced pressure, filtering and drying to obtain quaternary ammonium salt modified boron-containing cellulose;

[0058] Step 5: Add 13 parts by weight of 4-methyl-5-thiazoleethanol and 4-8 parts by weight of trimesoyl chloride to toluene solvent, stir evenly, continue to add 0.022 parts by weight of triethylamine catalyst, stir and react at 75°C for 13 hours, concentrate under reduced pressure to remove the solvent after the reaction, and then wash the crude product with ether to obtain intermediate 1;

[0059] Step 6: Add 4 parts by weight of the intermediate 1 and 8 parts by weight of 6-chloro-1-hexene to an isopropanol solvent, heat to 80° C. and reflux for 15 hours, then remove the solvent by rotary evaporation, and recrystallize from ethanol to obtain an olefinic quaternized thiazole;

[0060] Step 7: Add 10 parts by weight of 1,1-bis(dimethylsilyl)iron, 5 parts by weight of alkenyl quaternized thiazole, and 0.02 parts by weight of chloroplatinic acid catalyst to N,N-dimethylformamide solvent, react at 75° C. for 3 hours, and then perform reduced pressure distillation and washing to obtain modified quaternized thiazole;

[0061] Step 8: Add 6 parts by weight of chitosan, 3 parts by weight of quaternary ammonium salt-modified boron-containing cellulose, and 2 parts by weight of modified quaternized thiazole into a stirrer, stir for 12 minutes, dry, and perform compression molding to obtain an antibacterial material for linen fabrics.

[0062] Comparative Example 1

[0063] Compared with Example 4, this comparative example differs in that no quaternary ammonium salt is added to modify the boron-containing cellulose.

[0064] Comparative Example 2

[0065] Compared with Example 4, this comparative example differs in that no modified quaternized thiazole is added.

[0066] The concentration is 2×10 8 CFU / mL of Staphylococcus aureus liquid was added to a sterilized culture dish as the test strain, and then solid agar medium was added and dissolved, cooled to 45°C, and then poured into the culture dish, 20mL was poured into each plate with an inner diameter of 10cm, and then the antibacterial materials of the embodiments of the present invention and the comparative example (with a diameter of 3cm and a thickness of 1mm) were placed on the culture plate, and cultured in a constant temperature incubator for 12h at a temperature of 37°C. After culture, the diameter of the inhibition zone was measured. The test results are shown in Table 1.

[0067] Table 1: Antimicrobial testing.

[0068] project Diameter of inhibition zone (mm) Example 1 16.1 Example 2 16.7 Example 3 16.2 Example 4 15.9 Comparative Example 2 13.4 Comparative Example 3 12.5

[0069] It can be seen from Table 1 that the diameter of the antibacterial zone of the antibacterial material of the present invention reaches 15.9-16.7 mm, indicating that it has a good antibacterial effect.

[0070] Use an oxygen index meter to test the limiting oxygen index of the material; use a horizontal and vertical combustion instrument to test the combustion level of the material.

[0071] Table 2: Flame retardancy test.

[0072] project Limiting oxygen index (%) Combustion level Example 1 29 V-0 Example 2 31 V-0 Example 3 30 V-0 Example 4 31 V-0 Comparative Example 1 22 V-1 Comparative Example 2 23 V-1

[0073] It can be seen from Table 2 that the flame retardant effect of Examples 1-4 is better than that of Comparative Examples 1-2, which indicates that the antibacterial material prepared by the present invention has a good flame retardant effect.

[0074] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An antibacterial material applied to linen fabric, characterized in that: The invention comprises the following components by weight: 5-8 parts by weight of chitosan, 1-4 parts by weight of quaternary ammonium salt-modified boron-containing cellulose, and 2-3 parts by weight of modified quaternized thiazole.

2. The antibacterial material for linen fabric according to claim 1, characterized in that: The preparation method of the quaternary ammonium salt modified boron-containing cellulose is: Step 1: adding 6-9 parts by weight of cellulose to a sodium hydroxide aqueous solution having a mass fraction of 2-4%, then dropwise adding 12-18 parts by weight of epichlorohydrin and ethanol solvent, stirring and reacting at 60-75° C. to obtain epoxy cellulose; Step 2: Add epoxy cellulose and 2,4,6-tris(dimethylaminomethyl)phenol to N,N-dimethylformamide solvent, stir and mix, continue to add boron trifluoride ether catalyst, react at 70-90° C. for 5-7 hours, and then perform reduced pressure distillation and washing to obtain tertiary amino cellulose; Step 3: adding tertiary amino cellulose and 1,3-propane sultone to acetone solvent for dissolution, then dropping 2-4% sodium hydroxide solution by mass, reacting at 65-82° C. for 6-10 hours, concentrating under reduced pressure after the reaction to remove the solvent, and recrystallizing the crude product in ethanol to obtain sodium sulfonate modified cellulose; Step 4: Add ferrocenylboric acid to toluene solvent, stir and disperse, then add sodium sulfonate to modify cellulose, react at 110-125°C for 9-14 hours, and after the reaction is completed, perform vacuum distillation, filter and dry to obtain quaternary ammonium salt modified boron-containing cellulose.

3. The antibacterial material for linen fabric according to claim 2, characterized in that: The reaction time in step 1 is 2-6 hours.

4. The antibacterial material for linen fabric according to claim 2, characterized in that: In the step 2, the mass ratio of epoxy cellulose, 2,4,6-tris(dimethylaminomethyl)phenol and boron trifluoride etherate catalyst is 1:1.26-1.45:0.01-0.

02.

5. The antibacterial material for linen fabric according to claim 2, characterized in that: In the step three, the mass ratio of tertiary amino cellulose to 1,3-propane sultone is 1:2.1-2.

3.

6. The antibacterial material for linen fabric according to claim 2, characterized in that: In the step 4, the mass ratio of ferroceneboric acid to sodium sulfonate modified cellulose is 0.6-0.8:

1.

7. The antibacterial material for linen fabric according to claim 1, characterized in that: The preparation method of the modified quaternized thiazole is: S1. Add 10-14 parts by weight of 4-methyl-5-thiazoleethanol and 4-8 parts by weight of trimesoyl chloride to a toluene solvent, stir evenly, continue to add 0.021-0.024 parts by weight of triethylamine catalyst, stir and react at 70-80°C for 10-15h, concentrate under reduced pressure to remove the solvent after the reaction, and then wash the crude product with ether to obtain intermediate 1; S2. 3-5 parts by weight of intermediate 1 and 6-10 parts by weight of 6-chloro-1-hexene were added to an isopropanol solvent, and the temperature was raised to 75-85 ° C and refluxed for 10-20h. After the reaction, the solvent was removed by rotary evaporation and recrystallized from ethanol to obtain alkenyl quaternized thiazole; S3. Add 9-14 parts by weight of 1,1-bis(dimethylsilyl)iron and 4-6 parts by weight of quaternized alkenyl thiazole and 0.02-0.03 parts by weight of chloroplatinic acid catalyst to N,N-dimethylformamide solvent, react at 60-75°C for 2-4h, and then distill under reduced pressure and wash to obtain modified quaternized thiazole.

8. A method for preparing an antibacterial material for linen fabric according to any one of claims 1 to 7, characterized in that: The preparation method of the antibacterial material applied to linen fabrics comprises: adding chitosan, quaternary ammonium salt-modified cellulose and modified quaternary ammonium thiazole into a stirrer, stirring for 10-15 minutes, drying, and compression molding to obtain the antibacterial material applied to linen fabrics.