Preparation method of efficient antibacterial and deodorant fabric
By modifying the natural extract and forming microcapsules, combined with nanomodifiers and modification additives, the problem of unstable antibacterial and antiodor effects of fabrics when temperature changes is solved, and the stability and application of highly efficient antibacterial and antiodor fabrics are achieved.
Patent Information
- Application Number
- CN202510471509.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-15
- Publication Date
- 2025-07-11
AI Technical Summary
When the temperature of the existing antibacterial and odorproof fabrics change drastically, the antibacterial and odorproof effects of natural extracts are unstable, affecting the application of fabrics.
By modifying the natural extract, it is wrapped into microcapsules with biogels and nanomodifiers, and a buffer control system is formed in the wall structure. Combined with the combination of nano calcium carbonate and nanosilicon dioxide, it enhances thermal stability and temperature resistance, and matches the modification additives of chitosan fiber and aerogel fiber to form a sustained release effect.
When the temperature of the external ambient changes drastically, the antibacterial and anti-odor effects of natural extracts are more stable, and the application quality of fabrics is significantly improved.
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Abstract
Description
Technical Field
[0001] This application relates to the technical field of functional fabrics, and more specifically, it relates to a preparation method of an efficient antibacterial and odor-proof fabric. Background Art
[0002] Functional fabrics refer to a type of fabric with specific functions after special treatment or addition of functional auxiliaries. These functions include antibacterial, mildew-proof, antiviral, ultraviolet-proof, electromagnetic radiation-proof, etc., which can meet specific needs and provide additional protection or convenience. Antibacterial and odor-proof fabrics refer to textiles that can inhibit the growth of bacteria and reduce the generation of odors. Such fabrics are widely used in multiple fields, including daily wear, healthcare, and household items.
[0003] Currently, the functional raw materials used in antibacterial and odor-proof fabrics are usually nano-silver. Nano-silver is widely used due to its high efficiency, durability, and broad-spectrum antibacterial properties. Nano-silver can be fixed on textiles by directly adding it to the spinning dope or using methods such as impregnation, padding, coating, or spraying during post-treatment. However, nano-silver also has disadvantages in application. For example, its own potential toxicity can cause damage to the human body when used in large amounts or for a long time, and it will also pose an environmental risk. Therefore, nano-silver is usually used in combination with natural extracts. On the one hand, it can reduce the amount of nano-silver used, and on the other hand, it can form a complementary antibacterial mechanism through the combination of nano-silver and natural extracts. Nano-silver kills bacteria by releasing active silver ions to destroy the bacterial cell membrane and nucleic acid structure, and natural extracts can play a role by interfering with microbial metabolism or destroying the cell wall. The two cooperate synergistically, thereby significantly enhancing the antibacterial and odor-proof effects.
[0004] Regarding the above related technologies, the inventor believes that when nano-silver and natural extracts are applied in fabrics, although natural extracts have good biocompatibility and environmental friendliness and are relatively safe for the human body, their stability during fabric storage or use is not good. Especially when the fabric is affected by drastic changes in the external environmental temperature, the antibacterial and odor-proof effects of natural extracts will show obvious losses, thereby restricting the application of the fabric.
[0005] Therefore, there is an urgent need to propose a solution to solve the above technical problems. Summary of the Invention
[0006] In order to ensure that natural extracts can exert relatively stable antibacterial and odor-proof effects when the fabric is affected by drastic changes in the external environmental temperature, this application provides a preparation method of an efficient antibacterial and odor-proof fabric.
[0007] A preparation method of an efficient antibacterial and odor-proof fabric provided by this application adopts the following technical scheme: A preparation method of an efficient antibacterial and odor-proof fabric, comprising the following steps: (1) Substrate pretreatment: Select a fabric substrate, immerse it in water, and after heat treatment, obtain a pretreated fabric substrate; (2) Substrate functional treatment: Immerse the pretreated fabric substrate obtained in step (1) with a functional treatment agent, and then after washing, obtain a functionalized fabric substrate; (3) Substrate curing treatment: Cure and shape the functionalized fabric substrate obtained in step (2) to obtain an efficient antibacterial and odor-proof fabric; The functional treatment agent is made of raw materials comprising the following parts by weight: Water 90 - 95 parts; Natural extract 4.5 - 5.5 parts; Nano silver 0.08 - 0.12 parts; Surfactant 0.4 - 0.6 parts; Among them, the natural extract is subjected to modification treatment before addition and use, comprising the following steps: S1. Take bioadhesive and add it to water, dissolve it by heating to obtain a mixed solution; S2. Add the natural extract to the mixed solution in step S1, and then add a nano modifier for shear emulsification to obtain an emulsified mixed solution; S3. Add an acetic acid solution to the emulsified mixed solution in step S2, stir for complex coagulation; after the complex coagulation is completed, cool down, then add a sodium hydroxide solution for low-temperature alkalization treatment; finally, use glutaraldehyde and tannic acid for composite curing, and after centrifugal drying, obtain a modified natural extract; The nano modifier is composed of nano calcium carbonate and nano silicon dioxide in a weight ratio of (2.2 - 2.8) : 1.
[0008] By adopting the above technical solution, natural extracts and nano silver are used in combination as the main raw materials of the functional treatment agent, and are immobilized in the fabric substrate by impregnation, thereby obtaining a highly efficient antibacterial and odor-proof fabric. In order to ensure the stability of the application of natural extracts when affected by drastic changes in the external environmental temperature, the natural extracts are modified before being added and used; in the modification process, the natural extracts are encapsulated into microcapsules by bioadhesive and nano modifier, which can not only reduce the influence of environmental factors on the natural extracts, but also achieve a slow-release effect, bringing a long-term antibacterial effect; among them, the nano modifier is composed of nano calcium carbonate and nano silicon dioxide. Calcium carbonate can form a dense inorganic wall layer, significantly improving the thermal conductivity and thermal stability. Nano silicon dioxide can disperse thermal stress through high thermal conductivity, significantly enhancing the temperature change resistance performance. The combined use of nano calcium carbonate and nano silicon dioxide can exert an excellent compound synergistic effect, forming a buffer regulation system in the wall material structure formed by the bioadhesive, avoiding the direct action of temperature change on the extract, and then ensuring that the natural extracts can exert a relatively stable antibacterial and odor-proof effect when the fabric is affected by drastic changes in the external environmental temperature, and finally obtaining a highly efficient antibacterial and odor-proof fabric with better and stable application quality.
[0009] Preferably, in the modification treatment of natural extracts, the weight ratio of bioadhesive, natural extracts and nano modifier is 1:(1.4 - 1.6):(0.1 - 0.3).
[0010] By adopting the above technical solution, when the bioadhesive, natural extracts and nano modifier with the above weight ratio are used in combination, the obtained microcapsule structure of the modified natural extracts is relatively uniform and complete, and can also be uniformly attached to the fabric substrate during subsequent application; and it can also enable the nano modifier to exert better corresponding effect, so as to ensure the stability of natural extracts under drastic changes in the external environmental temperature, and then obtain a fabric with stable and excellent antibacterial and odor-proof effects.
[0011] Preferably, in the modification treatment of natural extracts, the bioadhesive is composed of gelatin and gum arabic in a weight ratio of 1:(1.2 - 1.5).
[0012] By adopting the above technical solution, the selection of gelatin and gum arabic in the above ratio can not only make the obtained modified natural extracts have a microcapsule structure with high mechanical strength and smooth surface, but also be fully dispersed and combined with the nano modifier. Therefore, when affected by drastic changes in the external environmental temperature, it can exert an excellent stabilizing and protecting effect on the natural extracts, and also perform better in terms of controlled release performance, thus making the actual application quality of the highly efficient antibacterial and odor-proof fabric perform better.
[0013] Preferably, in the modification treatment of the natural extract, the pH for stirring and complex coacervation is 3.8 - 4.0, the stirring speed is 2800 - 3200 rpm, and the time is 20 - 30 min.
[0014] By adopting the above technical solution, under the pH adjustment of 3.8 - 4.0, the complex coacervation reaction proceeds relatively completely. Combined with the control of the above stirring speed and time, it can ensure that there is no layering phenomenon in the system, and it has good dispersibility and less adhesion between particles. Furthermore, it can bring a better complex coacervation effect, which is beneficial to ensuring the obtaining of a modified natural extract with better quality.
[0015] Preferably, in the modification treatment of the natural extract, the temperature for low-temperature alkalization treatment is 1 - 5 °C, the pH is 8.8 - 9.2, the stirring speed is 2800 - 3200 rpm, and the time is 10 - 15 min.
[0016] By adopting the above technical solution, due to the effect of the alkalization treatment, the wall material of the microcapsules can be made firm, and it can be evenly distributed in the suspension system and is not easy to form adhesions with each other. Finally, when the obtained modified natural extract is applied, the influence of drastic changes in the external environmental temperature on the natural extract is relatively small; and the selection and cooperation of the above operation parameters can bring the above better effect, and thus a modified natural extract with better application quality is obtained.
[0017] Preferably, in the modification treatment of the natural extract, the dosage of glutaraldehyde is 8 - 10 mL / L, the dosage of tannic acid is 10 - 12 mL / L, and the curing time is 3 - 4.5 h.
[0018] By adopting the above technical solution, after the composite curing of glutaraldehyde and tannic acid, the dried modified natural extract becomes fine powdery substances, indicating that the natural extract is not easy to leak out during this process, and the microcapsule structure of the obtained modified natural extract is relatively complete and stable, and thus can play a better corresponding effect in the subsequent application process.
[0019] Preferably, in the modification treatment of the natural extract, step S2 is specifically set as adding the natural extract to the mixed solution in step S1, and then adding a nano modifier and a modification aid for shear emulsification to obtain an emulsified mixed solution; The weight ratio of the nano modifier to the modification aid is 1:(0.2 - 0.5), and the modification aid is composed of chitosan fiber and aerogel fiber in a weight ratio of (1.2 - 1.6):1.
[0020] By adopting the above technical solution, the main component of the chitosan fiber is natural polysaccharide, which has good biocompatibility and adsorption; the aerogel fiber has a unique nano-porous network structure, with a specific surface area much larger than that of the porous hollow ultrafine fiber, and has excellent resilience; when the two are used as modification aids and cooperate with each other, they can not only enhance the formation of a buffer regulation system by the nano-modifier in the wall material structure, but also enable the obtained modified natural extract to be more stably immobilized on the fabric substrate and exert a better slow-release effect; thus, when the fabric is affected by drastic changes in the external environmental temperature, the natural extract can be better protected and is also more stable during the process of exerting its own function, ultimately significantly improving the overall application quality of the high-efficiency antibacterial and deodorant fabric.
[0021] Preferably, the modification aid is composed of chitosan fiber and aerogel fiber in a weight ratio of 1.5:1.
[0022] By adopting the above technical solution, when the chitosan fiber and the aerogel fiber in the above weight ratio are used in combination, the structural network formed between them and the cooperation system formed by the modifier are better, and the obtained modified natural extract has better quality. Furthermore, when the high-efficiency antibacterial and deodorant fabric is affected by drastic changes in the external environmental temperature, the antibacterial and deodorant effects exerted are also better.
[0023] Preferably, the natural extract is a composition of one or more of garlic extract, perilla leaf extract, forsythia extract, mint extract, rosemary extract and purslane extract.
[0024] By adopting the above technical solution, the above-mentioned types of extracts all have certain antibacterial and deodorant effects, can be selected according to actual needs, and are all suitable for processing and preparation requirements, and can obtain a modified natural extract with excellent and stable quality. After being used in combination with nano-silver, an efficient antibacterial and deodorant fabric with excellent and stable application quality can be finally obtained.
[0025] Preferably, the surfactant is a composition of one or more of stearic acid, sodium dodecylbenzenesulfonate, quaternary ammonium salt, lecithin, fatty acid glyceride and sorbitan fatty acid ester.
[0026] By adopting the above technical solution, the surfactant can enhance the liquid absorption capacity of the fabric substrate, help the functional treatment agent better penetrate into the fabric substrate, and enable the efficacy components in the functional treatment agent to be stably immobilized on the fabric substrate, thereby obtaining a high-efficiency antibacterial and deodorant fabric with better quality; and the above-mentioned types of surfactants are all required for the preparation of high-efficiency antibacterial and deodorant fabrics.
[0027] In summary, the present application has the following beneficial effects: 1. The present application modifies natural extracts before addition and use. The natural extracts are encapsulated into microcapsules by a bioadhesive and a nano modifier, and a buffer regulation system formed by the compounding of nano calcium carbonate and nano silica in the nano modifier in the wall material structure can significantly reduce the direct effect of temperature changes on the natural extracts. Thus, when the modified natural extracts and nano silver are used together to prepare a highly antibacterial and odor-proof fabric, even when the fabric is affected by drastic changes in the external environmental temperature, it can exhibit relatively excellent and stable antibacterial and odor-proof effects. 2. By using a modifying agent composed of chitosan fiber and aerogel fiber, the present application can enhance the formation of a buffer regulation system by the nano modifier in the wall material structure, enabling better protection of the natural extracts. As a result, when the highly antibacterial and odor-proof fabric is affected by drastic changes in the external environmental temperature, the antibacterial and odor-proof effects it exhibits can be significantly improved. Specific Embodiments
[0028] The present application will be further described in detail below with reference to preparation examples, examples and comparative examples.
[0029] Unless otherwise specified, the raw materials used in the preparation examples, examples and comparative examples of the present application are all commercially available.
[0030] The fabric substrate is purchased from Shijiazhuang Longma Textile Co., Ltd., T80% polyester / C20% cotton, yarn count 45×45 Ne, density 110×76 g / m 2 , gram weight 110 g / m 2 , width 150 cm plain weave; The natural extract is perilla leaf extract purchased from Shaanxi Bolin Biotechnology Co., Ltd., product number BL-20230714; The nano silver is purchased from Fujian Ruisen New Materials Co., Ltd., model RS-LZY; The surfactant is sodium dodecyl benzene sulfonate; The nano calcium carbonate is purchased from Beijing Dekedaojin Technology Co., Ltd., specification 20 nm, purity 99.9%; The nano silica is purchased from Beijing Dekedaojin Technology Co., Ltd., specification 30 nm, purity 99.9%; The average diameter of the chitosan fiber is 80 nm, and the average length is 500 nm; The aerogel fiber is nano cellulose aerogel, with an average diameter of 50 nm and an average length of 500 nm.
[0031] Preparation examples of raw materials and / or intermediates: Preparation Example 1 A modified natural extract is obtained through the following steps: S1. Add bioadhesive into water at a ratio of 1 g:50 mL. After heating to 40 °C and dissolving, a mixed solution is obtained. S2. Add natural extract into the mixed solution in step S1, then add nano modifier and shear- emulsify at 3000 r / min for 10 min to obtain an emulsified mixed solution. S3. Add 10% acetic acid solution into the emulsified mixed solution in step S2 and stir for complex coacervation. After the complex coacervation is completed, cool down the temperature, then add 10% sodium hydroxide solution for low- temperature alkalization treatment. Finally, use glutaraldehyde and tannic acid for composite curing, and after centrifugal drying, a modified natural extract is obtained.
[0032] Note: In the above operations, the nano modifier is composed of nano calcium carbonate and nano silicon dioxide at a weight ratio of 2.5:1. The weight ratio of bioadhesive, natural extract and nano modifier is 1:1.5:0.2. The bioadhesive is composed of gelatin and arabic gum at a weight ratio of 1:1.35. In the modification treatment of the natural extract, the pH of the stirring for complex coacervation is 3.9, the stirring speed is 3000 rpm, and the time is 25 min. In the modification treatment of the natural extract, the temperature of the low- temperature alkalization treatment is 3 °C, the pH is 9, the stirring speed is 3000 rpm, and the time is 12.5 min. In the modification treatment of the natural extract, the dosage of glutaraldehyde is 9 mL / L, the dosage of tannic acid is 11 mL / L, and the curing time is 3.75 h.
[0033] Preparation Example 2 A modified natural extract, different from Preparation Example 1 in that in the modification treatment of the natural extract, the nano modifier is composed of nano calcium carbonate and nano silicon dioxide at a weight ratio of 2.2:1.
[0034] Preparation Example 3 A modified natural extract, different from Preparation Example 1 in that in the modification treatment of the natural extract, the nano modifier is composed of nano calcium carbonate and nano silicon dioxide at a weight ratio of 2.8:1.
[0035] Preparation Example 4 A modified natural extract, different from Preparation Example 1 in that in the modification treatment of the natural extract, the weight ratio of bioadhesive, natural extract and nano modifier is 1:1.4:0.1.
[0036] Preparation Example 5 A modified natural extract, different from Preparation Example 1 in that in the modification treatment of the natural extract, the weight ratio of bioadhesive, natural extract and nano modifier is 1:1.6:0.3.
[0037] Preparation Example 6 A modified natural extract, which is different from Preparation Example 1 in that in the modification treatment of the natural extract, the bioadhesive is composed of gelatin and gum arabic in a weight ratio of 1:1.2.
[0038] Preparation Example 7 A modified natural extract, which is different from Preparation Example 1 in that in the modification treatment of the natural extract, the bioadhesive is composed of gelatin and gum arabic in a weight ratio of 1:1.5.
[0039] Preparation Example 8 A modified natural extract, which is different from Preparation Example 1 in that in the modification treatment of the natural extract, the pH of stirring and coacervation is 3.8, the stirring speed is 2800 rpm, and the time is 30 min.
[0040] Preparation Example 9 A modified natural extract, which is different from Preparation Example 1 in that in the modification treatment of the natural extract, the pH of stirring and coacervation is 4.0, the stirring speed is 3200 rpm, and the time is 20 min.
[0041] Preparation Example 10 A modified natural extract, which is different from Preparation Example 1 in that in the modification treatment of the natural extract, the temperature of low-temperature alkalization treatment is 1 °C, the pH is 8.8, the stirring speed is 2800 rpm, and the time is 15 min.
[0042] Preparation Example 11 A modified natural extract, which is different from Preparation Example 1 in that in the modification treatment of the natural extract, the temperature of low-temperature alkalization treatment is 5 °C, the pH is 9.2, the stirring speed is 3200 rpm, and the time is 10 min.
[0043] Preparation Example 12 A modified natural extract, which is different from Preparation Example 1 in that in the modification treatment of the natural extract, the amount of glutaraldehyde used is 8 mL / L, the amount of tannic acid used is 10 mL / L, and the curing time is 4.5 h.
[0044] Preparation Example 13 A modified natural extract, which is different from Preparation Example 1 in that in the modification treatment of the natural extract, the amount of glutaraldehyde used is 10 mL / L, the amount of tannic acid used is 12 mL / L, and the curing time is 3 h.
[0045] Preparation Example 14 A modified natural extract, which is different from Preparation Example 1 in that step S2 is specifically set as adding a natural extract to the mixed solution in step S1, then adding a nano modifier and a modification assistant, and performing shear emulsification at 3000 r / min for 10 min to obtain an emulsified mixed solution; The weight ratio of the nano modifier to the modification aid is 1:0.35, and the modification aid is composed of chitosan fiber and aerogel fiber in a weight ratio of 1.5:1.
[0046] Preparation Example 15 A modified natural extract, which is different from Preparation Example 14 in that the weight ratio of the nano modifier to the modification aid is 1:0.2.
[0047] Preparation Example 16 A modified natural extract, which is different from Preparation Example 14 in that the weight ratio of the nano modifier to the modification aid is 1:0.5.
[0048] Preparation Example 17 A modified natural extract, which is different from Preparation Example 14 in that the modification aid is composed of chitosan fiber and aerogel fiber in a weight ratio of 1.4:1.
[0049] Preparation Example 18 A modified natural extract, which is different from Preparation Example 14 in that the modification aid is composed of chitosan fiber and aerogel fiber in a weight ratio of 1.2:1.
[0050] Preparation Example 19 A modified natural extract, which is different from Preparation Example 14 in that the modification aid is composed of chitosan fiber and aerogel fiber in a weight ratio of 1.6:1.
[0051] Preparation Example 20 A modified natural extract, which is different from Preparation Example 14 in that chitosan fiber is not used in the modification aid.
[0052] Preparation Example 21 A modified natural extract, which is different from Preparation Example 14 in that aerogel fiber is not used in the modification aid.
[0053] Preparation Example 22 A modified natural extract, which is different from Preparation Example 1 in that nano calcium carbonate is not used in the nano modifier.
[0054] Preparation Example 23 A modified natural extract, which is different from Preparation Example 1 in that nano silicon dioxide is not used in the nano modifier.
[0055] Preparation Example 24 A modified natural extract, which is different from Preparation Example 1 in that neither nano calcium carbonate nor nano silicon dioxide is used in the nano modifier. Examples
[0056] Example 1. A method for preparing a highly efficient antibacterial and odor-proof fabric, comprising the following steps: (1) Substrate pretreatment: Select a fabric substrate and immerse it in water. After heating to 60°C and treating for 30 minutes, a pretreated fabric substrate is obtained. (2) Substrate functional treatment: Impregnate the pretreated fabric substrate obtained in step (1) with a functional treatment agent, control the liquor pick-up rate to 60%, and then wash it to obtain a functionalized fabric substrate. (3) Substrate curing treatment: Cure and shape the functionalized fabric substrate obtained in step (2) at 90°C for 30 minutes to obtain a highly efficient antibacterial and odor-proof fabric.
[0057] Note: The raw materials of the functional treatment agent used in the above steps and their corresponding weight parts are shown in Table 1. Among them, the natural extract is modified before being added and used, and is prepared in Preparation Example 1.
[0058] Examples 2-3. A method for preparing a highly efficient antibacterial and odor-proof fabric, which is different from Example 1 in that the raw materials of the functional treatment agent and their corresponding weight parts are shown in Table 1.
[0059] Table 1 Raw materials of the functional treatment agent in Examples 1-3 and their corresponding weight parts (parts / kg)
[0060] Example 4. A method for preparing a highly efficient antibacterial and odor-proof fabric, which is different from Example 1 in that the natural extract is modified before being added and used, and is prepared in Preparation Example 2.
[0061] Example 5. A method for preparing a highly efficient antibacterial and odor-proof fabric, which is different from Example 1 in that the natural extract is modified before being added and used, and is prepared in Preparation Example 3.
[0062] Example 6. A method for preparing a highly efficient antibacterial and odor-proof fabric, which is different from Example 1 in that the natural extract is modified before being added and used, and is prepared in Preparation Example 4.
[0063] Example 7. A method for preparing a highly efficient antibacterial and odor-proof fabric, which is different from Example 1 in that the natural extract is modified before being added and used, and is prepared in Preparation Example 5.
[0064] Example 8. A method for preparing a highly efficient antibacterial and odor-proof fabric, which is different from Example 1 in that the natural extract is modified before being added and used, and is prepared in Preparation Example 6.
[0065] Example 9. A method for preparing a highly efficient antibacterial and odor-proof fabric, which is different from Example 1 in that the natural extract is subjected to a modification treatment before being added and used, and is prepared from Preparation Example 7.
[0066] Example 10. A method for preparing a highly efficient antibacterial and odor-proof fabric, which is different from Example 1 in that the natural extract is subjected to a modification treatment before being added and used, and is prepared from Preparation Example 8.
[0067] Example 11. A method for preparing a highly efficient antibacterial and odor-proof fabric, which is different from Example 1 in that the natural extract is subjected to a modification treatment before being added and used, and is prepared from Preparation Example 9.
[0068] Example 12. A method for preparing a highly efficient antibacterial and odor-proof fabric, which is different from Example 1 in that the natural extract is subjected to a modification treatment before being added and used, and is prepared from Preparation Example 10.
[0069] Example 13. A method for preparing a highly efficient antibacterial and odor-proof fabric, which is different from Example 1 in that the natural extract is subjected to a modification treatment before being added and used, and is prepared from Preparation Example 11.
[0070] Example 14. A method for preparing a highly efficient antibacterial and odor-proof fabric, which is different from Example 1 in that the natural extract is subjected to a modification treatment before being added and used, and is prepared from Preparation Example 12.
[0071] Example 15. A method for preparing a highly efficient antibacterial and odor-proof fabric, which is different from Example 1 in that the natural extract is subjected to a modification treatment before being added and used, and is prepared from Preparation Example 13.
[0072] Example 16. A method for preparing a highly efficient antibacterial and odor-proof fabric, which is different from Example 1 in that the natural extract is subjected to a modification treatment before being added and used, and is prepared from Preparation Example 14.
[0073] Example 17. A method for preparing a highly efficient antibacterial and odor-proof fabric, which is different from Example 1 in that the natural extract is subjected to a modification treatment before being added and used, and is prepared from Preparation Example 15.
[0074] Example 18. A method for preparing a highly efficient antibacterial and odor-proof fabric, which is different from Example 1 in that the natural extract is subjected to a modification treatment before being added and used, and is prepared from Preparation Example 16.
[0075] Example 19. A method for preparing a highly efficient antibacterial and odor-proof fabric, which is different from Example 1 in that the natural extract is subjected to a modification treatment before being added and used, and is prepared from Preparation Example 17.
[0076] Example 20. A method for preparing a highly efficient antibacterial and odor-proof fabric, which is different from Example 1 in that the natural extract is subjected to a modification treatment before being added and used, and is obtained from Preparation Example 18.
[0077] Example 21. A method for preparing a highly efficient antibacterial and odor-proof fabric, which is different from Example 1 in that the natural extract is subjected to a modification treatment before being added and used, and is obtained from Preparation Example 19.
[0078] Example 22. A method for preparing a highly efficient antibacterial and odor-proof fabric, which is different from Example 1 in that the natural extract is subjected to a modification treatment before being added and used, and is obtained from Preparation Example 20.
[0079] Example 23. A method for preparing a highly efficient antibacterial and odor-proof fabric, which is different from Example 1 in that the natural extract is subjected to a modification treatment before being added and used, and is obtained from Preparation Example 21.
[0080] Comparative examples: Comparative Example 1 A method for preparing a highly efficient antibacterial and odor-proof fabric, which is different from Example 1 in that the natural extract is subjected to a modification treatment before being added and used, and is obtained from Preparation Example 22.
[0081] Comparative Example 2 A method for preparing a highly efficient antibacterial and odor-proof fabric, which is different from Example 1 in that the natural extract is subjected to a modification treatment before being added and used, and is obtained from Preparation Example 23.
[0082] Comparative Example 3 A method for preparing a highly efficient antibacterial and odor-proof fabric, which is different from Example 1 in that the natural extract is subjected to a modification treatment before being added and used, and is obtained from Preparation Example 24.
[0083] Comparative Example 4 A method for preparing a highly efficient antibacterial and odor-proof fabric, which is different from Example 1 in that the natural extract is not subjected to a modification treatment before being added and used.
[0084] Performance detection test: Test samples: The highly efficient antibacterial and odor-proof fabrics obtained from Examples 1 - 23 are used as Test Samples 1 - 23; the highly efficient antibacterial and odor-proof fabrics obtained from Comparative Examples 1 - 4 are used as Control Samples 1 - 4.
[0085] Test method: (1) Bacteriostatic rate test: The highly efficient antibacterial and odor-proof fabric was tested according to the content in Standard GB / T 20944.3-2008 "Evaluation of Antibacterial Properties of Textiles - Part 3: Oscillation Method" to obtain the bacteriostatic rate value; (2) Odor-proof performance test: The highly efficient antibacterial and odor-proof fabric was tested according to the content in Standard GB / T 33610.2-2017 "Determination of Deodorizing Properties of Textiles - Part 2: Detecting Tube Method" to obtain the reduction rate value of odor component concentration. After the above tests were completed on the highly efficient antibacterial and odor-proof fabric, the obtained value was recorded as the initial value; then the highly efficient antibacterial and odor-proof fabric was placed in a high and low temperature alternating test chamber with an initial temperature of 25°C. First, it was heated to 50°C at a rate of 2°C / min, then cooled to -5°C at a rate of 1.5°C / min, and then heated to 25°C at a rate of 1°C / min, which was recorded as 1 cycle. After continuously performing 10 cycles, the above tests were carried out in the same way, and the obtained value was recorded as the application value; finally, the bacteriostatic loss rate and the odor-proof loss rate were calculated. The bacteriostatic loss rate = (initial bacteriostatic rate - applied bacteriostatic rate) / initial bacteriostatic rate, and the odor-proof loss rate = (initial reduction rate of odor component concentration - applied reduction rate of odor component concentration) / initial reduction rate of odor component concentration. The smaller the bacteriostatic loss rate and the odor-proof loss rate, the better the stability of the highly efficient antibacterial and odor-proof fabric when affected by drastic changes in the external environmental temperature.
[0086] After the above tests were carried out on test samples 1-23 and control samples 1-4, the test results were correspondingly recorded in Table 2.
[0087] Table 2 Test Results of Test Samples 1-23 and Control Samples 1-4
[0088] Combined with Examples 1-3 and Comparative Example 4 and Table 2, it can be seen that by modifying the natural extract before addition and encapsulating the natural extract into microcapsules through a bioadhesive and a nano modifier, the natural extract can be effectively protected under severe temperature change environments. As a result, the finally obtained highly antibacterial and odor-proof fabric has a significant reduction in the antibacterial loss rate and odor-proof loss rate after the above tests. Combining Comparative Examples 1-3 and Table 2, it can be seen that in the modification treatment of the natural extract, if the nano modifier is not used, it is found that the protective effect brought by the bioadhesive alone on the natural extract will be greatly discounted. At the same time, if any one of nano calcium carbonate and nano silicon dioxide in the nano modifier is added alone, although the corresponding effect can be improved, the improvement amplitude is limited, and the sum of the corresponding effects brought by their respective single additions is far less excellent than the compounding of the two. Thus, it can be seen that nano calcium carbonate and nano silicon dioxide as nano modifiers can bring a significant improvement effect of 1+1>2, and can also exert a relatively excellent and stable antibacterial and odor-proof effect when the highly antibacterial and odor-proof fabric is affected by drastic changes in the external environmental temperature.
[0089] Combined with Example 1 and Examples 4-5 and Table 2, it can be seen that when the nano modifier is composed of nano calcium carbonate and nano silicon dioxide in a weight ratio of (2.2-2.8):1, modified natural extracts with better quality can be obtained, enabling them to exert stable and excellent application effects in highly antibacterial and odor-proof fabrics.
[0090] Combined with Example 1 and Examples 6-7 and Table 2, it can be seen that in the modification treatment of the natural extract, when the weight ratio of the bioadhesive, natural extract, and nano modifier is 1:(1.4-1.6):(0.1-0.3), highly antibacterial and odor-proof fabrics with stable and better quality can be obtained.
[0091] Combined with Example 1 and Examples 8-9 and Table 2, it can be seen that in the modification treatment of the natural extract, when the bioadhesive is composed of gelatin and gum arabic in a weight ratio of 1:(1.2-1.5), the application quality performance of the highly antibacterial and odor-proof fabric is better when affected by drastic changes in the external environmental temperature.
[0092] Combined with Example 1 and Examples 10 - 15 and in combination with Table 2, it can be seen that in the modification treatment of natural extracts, the pH of stirring complex coacervation is 3.8 - 4.0, the stirring speed is 2800 - 3200 rpm, and the time is 20 - 30 min; the temperature of low-temperature alkalization treatment is 1 - 5 °C, the pH is 8.8 - 9.2, the stirring speed is 2800 - 3200 rpm, and the time is 10 - 15 min; the dosage of glutaraldehyde is 8 - 10 mL / L, the dosage of tannic acid is 10 - 12 mL / L, and the curing time is 3 - 4.5 h; all of the above can obtain modified natural extracts with better quality, and high-efficiency antibacterial and odor-proof fabrics with excellent and stable quality can be obtained after application.
[0093] Combined with Example 1 and Examples 16 - 21 and in combination with Table 2, it can be seen that by using a modification aid composed of chitosan fiber and aerogel fiber, the antibacterial loss rate and odor-proof loss rate can be further reduced, indicating that when the fabric is affected by drastic changes in the external environmental temperature, the natural extract can be better protected and is also more stable during the process of exerting its own functions, ultimately significantly improving the overall application quality of the high-efficiency antibacterial and odor-proof fabric; combined with Examples 22 - 23 and in combination with Table 2, it can be seen that if only chitosan fiber or aerogel fiber is used, although it can bring about a reduction in the antibacterial loss rate and odor-proof loss rate, the sum of the corresponding effects brought by their respective single use is far less excellent than that of their compounding. Thus, it can be seen that the combination between chitosan fiber and aerogel fiber has a synergistic effect of compounding.
[0094] This specific embodiment is only an interpretation of the present application and is not a limitation thereto. After reading this specification, those skilled in the art can make modifications without creative contributions to this embodiment as needed, but as long as it is within the scope of the claims of the present application, it is protected by the patent law.
Claims
1. A preparation method of an efficient antibacterial and anti-odor fabric, characterized in that, It includes the following steps: (1) Substrate pretreatment: Select a fabric substrate, immerse it in water, and after heat treatment, obtain a pretreated fabric substrate; (2) Substrate functional treatment: Impregnate the pretreated fabric substrate obtained in step (1) with a functional treatment agent, and then after washing, obtain a functionalized fabric substrate; (3) Substrate curing treatment: Cure and shape the functionalized fabric substrate obtained in step (2) to obtain a highly antibacterial and odor-proof fabric; The functional treatment agent is made from raw materials comprising the following parts by weight: Water 90 - 95 parts; Natural extract 4.5 - 5.5 parts; Nano silver 0.08 - 0.12 parts; Surfactant 0.4 - 0.6 parts; Among them, the natural extract is subjected to modification treatment before addition and use, including the following steps: S1: Take bioadhesive, add it to water, and after heating and dissolving, obtain a mixed solution; S2: Add the natural extract to the mixed solution in step S1, and then add a nano modifier for shear emulsification to obtain an emulsified mixed solution; S3: Add an acetic acid solution to the emulsified mixed solution in step S2 for stirring and complex coacervation; after the complex coacervation is completed, cool down, then add a sodium hydroxide solution for low-temperature alkalization treatment; finally, use glutaraldehyde and tannic acid for composite curing, and after centrifugal drying, obtain a modified natural extract; The nano modifier is composed of nano calcium carbonate and nano silicon dioxide in a weight ratio of (2.2 - 2.8):
1.
2. The preparation method of the highly efficient antibacterial and odor-proof fabric according to claim 1, characterized in that: In the modification treatment of the natural extract, the weight ratio of the bioadhesive, the natural extract, and the nano modifier is 1:(1.4 - 1.6):(0.1 - 0.3).
3. The preparation method of the highly efficient antibacterial and odor-proof fabric according to claim 1, characterized in that: In the modification treatment of the natural extract, the bioadhesive is composed of gelatin and gum arabic in a weight ratio of 1:(1.2 - 1.5).
4. The preparation method of the highly efficient antibacterial and deodorant fabric according to claim 1, characterized in that: In the modification treatment of the natural extract, the pH of the stirring and complex coacervation is 3.8 - 4.0, the stirring speed is 2800 - 3200 rpm, and the time is 20 - 30 min.
5. The preparation method of the highly efficient antibacterial and deodorant fabric according to claim 1, characterized in that: In the modification treatment of the natural extract, the temperature of the low-temperature alkalization treatment is 1 - 5 °C, the pH is 8.8 - 9.2, the stirring speed is 2800 - 3200 rpm, and the time is 10 - 15 min.
6. The preparation method of the highly efficient antibacterial and odor-proof fabric according to claim 1, characterized in that: In the modification treatment of the natural extract, the dosage of glutaraldehyde is 8 - 10 mL / L, the dosage of tannic acid is 10 - 12 mL / L, and the curing time is 3 - 4.5 h.
7. The preparation method of the highly efficient antibacterial and deodorant fabric according to claim 1, characterized in that: In the modification treatment of the natural extract, step S2 is specifically set as adding the natural extract to the mixed solution in step S1, and then adding the nano modifier and a modification aid for shear emulsification to obtain an emulsified mixed solution; The weight ratio of the nano modifier and the modification aid is 1:(0.2 - 0.5), and the modification aid is composed of chitosan fiber and aerogel fiber in a weight ratio of (1.2 - 1.6):
1.
8. The preparation method of the highly efficient antibacterial and odor-proof fabric according to claim 7, characterized in that: The modification aid is composed of chitosan fiber and aerogel fiber in a weight ratio of 1.5:
1.
9. The preparation method of the highly efficient antibacterial and odor-proof fabric according to claim 1, characterized in that: The natural extract is a composition of one or more of garlic extract, perilla leaf extract, forsythia extract, mint extract, rosemary extract, and purslane extract.
10. The preparation method of the highly efficient antibacterial and deodorant fabric according to claim 1, characterized in that: The surfactant is a composition of one or more of stearic acid, sodium dodecylbenzenesulfonate, quaternary ammonium salt, lecithin, fatty acid glyceride, and sorbitan fatty acid ester.