A bleaching agent and its preparation method and application

Abstract

The application discloses a bleaching agent and a preparation method and application thereof, and relates to the technical field of bleaching agents. In one aspect, the bleaching agent comprises A component and B component, and the mass ratio between the A component and the B component is 1-2:1-3; the A component comprises the following raw material components in weight percentage: 45-60 parts of sodium ferrate, and 5-10 parts of active ceramic particles; the B component comprises the following raw material components in weight percentage: 20-30 parts of peroxo-benzoic acid, 25-40 parts of dimethyl sulfoxide, and 50-75 parts of water. In another aspect, the application further provides a preparation method and application of the bleaching agent. The bleaching agent provided by the application has the advantages of good stability, less residual amount, and safety and environmental protection.

Description

Technical Field

[0001] This application relates to the field of bleaching agents, and in particular to a bleaching agent, its preparation method, and its application. Background Technology

[0002] Bleach is a washing product used to remove stains such as organic pigments from fabrics. Its working principle is through a chemical reaction, releasing active oxygen to bleach and break down pigment groups and oxidize large organic molecules into smaller molecules. Existing bleaches are highly corrosive and prone to leaving residues. Based on their active ingredients, bleaches can be divided into chlorine-based bleaches and oxygen-based bleaches. The active ingredient in chlorine-based bleaches is sodium hypochlorite, while the active ingredient in oxygen-based bleaches is hydrogen peroxide.

[0003] Currently, before dyeing and printing fabrics, they need to be bleached using a pre-dyeing bleaching agent. If an oxygen-based bleach is used, the stability of hydrogen peroxide in the bleach will affect the bleaching process. Therefore, in existing technologies, chlorine-based bleach is mostly used as the pre-dyeing bleach. However, using chlorine-based bleach may bring new problems: toxic chlorine gas is released during the bleaching process, and the bleached wastewater contains a large amount of chlorine, requiring costly dechlorination treatment.

[0004] In conclusion, there is an urgent need for a bleaching agent that is stable, leaves little residue, and is safe and environmentally friendly, in order to solve the problems existing in the current technology. Summary of the Invention

[0005] In order to solve at least one of the above-mentioned technical problems and to develop a bleaching agent with good stability, low residue, and safety and environmental protection, this application provides a bleaching agent, its preparation method and application.

[0006] On the one hand, the bleaching agent provided in this application includes component A and component B, and the mass ratio between component A and component B is 1-2:1-3;

[0007] Component A comprises the following raw material components by weight: 45-60 parts of sodium ferrate and 5-10 parts of active ceramic particles.

[0008] Component B comprises the following raw material components by weight: 20-30 parts of benzoyl peroxide, 25-40 parts of dimethyl sulfoxide, and 50-75 parts of water.

[0009] By adopting the above technical solution, the A component of the bleaching agent provided in this application consists of sodium ferrate and activated ceramic particles. Sodium ferrate has strong oxidizing properties, and during the bleaching process of fabric, it can bleach and destroy pigment molecules through its strong oxidizing properties. At the same time, it can also be reduced to ferric hydroxide colloid, thereby forming an inorganic flocculant, effectively removing fine suspended solids in wastewater and reducing the cost of subsequent wastewater treatment. The surface of the activated ceramic particles has a large number of micropores and surface active sites, which can effectively adsorb and remove pigment molecules. Therefore, the activated ceramic particles play the role of an adsorbent in the bleaching agent provided in this application, which can further ensure the bleaching performance of the bleaching agent provided in this application and prevent pigment from sticking back to the fabric.

[0010] The bleaching agent provided in this application comprises component B, which consists of benzoyl peroxide, dimethyl sulfoxide, and water. Benzoyl peroxide is specifically selected as the active ingredient in component B, and dimethyl sulfoxide and water are used as solvents for component B, which further improves the bleaching performance of the bleaching agent provided in this application. On one hand, using benzoyl peroxide as a surfactant allows it to dissolve pigments from the fabric into the water. On the other hand, benzoyl peroxide can generate reactive oxygen species and free radicals through its own decomposition. These reactive oxygen species and free radicals can react with the pigments, thereby altering the structure of the pigment molecules and causing them to lose their color, thus helping to remove pigments from the fabric.

[0011] In summary, the bleach provided in this application is a two-component bleach. When using the bleach provided in this application, by mixing component A and component B in a specific mass ratio, a bleach with excellent bleaching performance can be obtained, and no toxic substances will be generated during the use of the bleach provided in this application.

[0012] Optionally, the mass ratio between component A and component B is 1:2.

[0013] Optionally, component A comprises the following raw material components by weight: 54-58 parts of sodium ferrate and 8-9 parts of activated ceramic particles;

[0014] Component B comprises the following raw material components by weight: 25-28 parts of benzoyl peroxide, 33-36 parts of dimethyl sulfoxide, and 60-68 parts of water.

[0015] Optionally, component A further includes montmorillonite and waterborne epoxy resin; wherein the mass ratio between montmorillonite and sodium ferrate is 0.3 to 0.5:1, and the mass ratio between waterborne epoxy resin and sodium ferrate is 0.1 to 0.2:1.

[0016] By adopting the above technical solution, montmorillonite and water-based epoxy resin are specifically selected in component A of the bleaching agent provided in this application. This allows sodium ferrate and active ceramic particles in component A to be adhered by montmorillonite and water-based epoxy resin, delaying the action of sodium ferrate in component A and playing a slow-release role. This avoids uneven bleaching caused by the rapid action of sodium ferrate in component A when using the bleaching agent provided in this application.

[0017] Optionally, component B further includes a pH buffer, wherein the pH buffer controls the pH value of component B to be 6.5 to 7.5.

[0018] By adopting the above technical solution, the pH buffer can ensure that the pH value of component B in the bleaching agent provided in this application is close to neutral, thereby further improving the stability of component B in the bleaching agent provided in this application.

[0019] Optionally, in component A, the active ceramic particles include alumina, zirconium oxide, and silicon dioxide, and the mass ratio of alumina, zirconium oxide, and silicon dioxide is 1-2:1:1-2.

[0020] By adopting the above technical solution, the active ceramic particles used in component A of the bleaching agent provided in this application are further defined, which can further improve the adsorption effect on pigment molecules.

[0021] Secondly, this application provides a method for preparing the above-mentioned bleaching agent, comprising the following steps:

[0022] Sodium ferrate and activated ceramic particles are provided, and the sodium ferrate and activated ceramic particles are mixed according to the weight parts and ball-milled for 30-60 minutes to obtain component A;

[0023] Benzoyl peroxide, dimethyl sulfoxide, and water are provided, and benzoyl peroxide, dimethyl sulfoxide, and water are mixed in parts by weight to obtain component B.

[0024] By adopting the above technical solution, it is relatively easy to obtain a bleaching agent with good stability, low residue, and safety and environmental protection, and the preparation method is relatively simple.

[0025] Optionally, the preparation of component A may also include providing montmorillonite and waterborne epoxy resin, adding montmorillonite and waterborne epoxy resin to sodium ferrate and active ceramic particles, and ball milling for 30-60 minutes to obtain component A.

[0026] The mass ratio of montmorillonite to sodium ferrate is 0.3–0.5:1, and the mass ratio of waterborne epoxy resin to sodium ferrate is 0.1–0.2:1.

[0027] By adopting the above technical solution, montmorillonite and water-based epoxy resin are specifically added to component A and ball-milled, so that sodium ferrate and active ceramic particles are adhered by montmorillonite and water-based epoxy resin, which can delay the action of sodium ferrate in component A, thereby avoiding uneven bleaching caused by the rapid action of sodium ferrate in component A when using the bleaching agent provided in this application.

[0028] Thirdly, this application provides the application of the above-mentioned bleaching agent in the field of fabric bleaching.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] 1. Component A of the bleaching agent provided in this application includes sodium ferrate and activated ceramic particles. Sodium ferrate has strong oxidizing properties, which can bleach and destroy pigment molecules. It can also be reduced to ferric hydroxide colloid to form an inorganic flocculant, effectively removing fine suspended solids in wastewater. Activated ceramic particles can effectively adsorb and remove pigment molecules, which can further ensure the bleaching performance of the bleaching agent provided in this application and prevent pigments from sticking back to the fabric.

[0031] 2. The bleaching agent provided in this application comprises benzoyl peroxide, dimethyl sulfoxide, and water. The specific selection of benzoyl peroxide as the active ingredient in component B, and the use of dimethyl sulfoxide and water as solvents for component B, further enhances the bleaching performance of the bleaching agent provided in this application. On one hand, using benzoyl peroxide as a surfactant allows it to dissolve pigments from the fabric into the water. On the other hand, benzoyl peroxide can generate reactive oxygen species and free radicals through its own decomposition. These reactive oxygen species and free radicals can react with the pigments, thereby altering the structure of the pigment molecules and causing them to lose their color, thus aiding in the removal of pigments from the fabric.

[0032] 3. The bleaching agent provided in this application is a two-component bleaching agent. When using the bleaching agent provided in this application, the A component and the B component are mixed in a specific mass ratio to obtain a bleaching agent with excellent bleaching performance. Moreover, no toxic substances are generated during the use of the bleaching agent provided in this application.

[0033] 4. The preparation method of the bleaching agent provided in this application is simple to operate and can easily obtain a bleaching agent with good stability, low residue, and safety and environmental protection. Detailed Implementation

[0034] The present application will be further described in detail below with reference to the embodiments.

[0035] This application designs a bleaching agent comprising component A and component B, wherein the mass ratio of component A to component B is 1-2:1-3;

[0036] Component A comprises the following raw material components by weight: 45-60 parts of sodium ferrate and 5-10 parts of active ceramic particles.

[0037] Component B comprises the following raw material components by weight: 20-30 parts of benzoyl peroxide, 25-40 parts of dimethyl sulfoxide, and 50-75 parts of water.

[0038] The bleaching agent of this application is prepared by the following method, including the following steps:

[0039] Sodium ferrate and activated ceramic particles are provided, and the sodium ferrate and activated ceramic particles are mixed according to the weight parts and ball-milled for 30-60 minutes to obtain component A;

[0040] Benzoyl peroxide, dimethyl sulfoxide, and water are provided, and benzoyl peroxide, dimethyl sulfoxide, and water are mixed in parts by weight to obtain component B.

[0041] The bleaching agent of this application can be used in the field of fabric bleaching.

[0042] To further improve the uniformity of the bleaching agent provided in this application when bleaching fabrics, component A of the bleaching agent provided in this application also includes montmorillonite and waterborne epoxy resin; wherein the mass ratio between montmorillonite and sodium ferrate is 0.3 to 0.5:1, and the mass ratio between waterborne epoxy resin and sodium ferrate is 0.1 to 0.2:1. Specific Implementation

[0044] In the preparation examples and embodiments of this application, unless otherwise specified, all raw materials used are commercially available products:

[0045] Sodium ferrate: Hubei Fangde New Materials Co., Ltd., purity 99%;

[0046] Activated ceramic particles: alumina, 99% purity; zirconium oxide, 99% purity; silicon dioxide, 99% purity;

[0047] Montmorillonite: Hubei Yunmei Technology Co., Ltd., purity 99%;

[0048] Waterborne epoxy resin: Shandong Jiaying Chemical Technology Co., Ltd., purity 99.9%;

[0049] Benzoyl peroxide: Wuhan Jixin Yibang Biotechnology Co., Ltd., purity 99%;

[0050] Dimethyl sulfoxide: Qingdao Dexin Chemical Co., Ltd., purity 99.9%;

[0051] pH buffer: Hubei Rishengchang New Material Technology Co., Ltd., purity 98%;

[0052] Water: tap water.

[0053] It should be noted that the bleach provided in this application is a two-component bleach. When storing the bleach provided in this application, component A and component B should be stored separately. When using the bleach provided in this application, component A and component B should be mixed according to the corresponding mass ratio.

[0054] The following are preparation examples 1 to 3 of this application, each of which provides a method for preparing a bleaching agent.

[0055] Preparation Example 1

[0056] Sodium ferrate and activated ceramic particles are provided, and the sodium ferrate and activated ceramic particles are mixed according to the weight parts and ball-milled for 30 min to obtain component A;

[0057] Benzoyl peroxide, dimethyl sulfoxide, and water are provided, and benzoyl peroxide, dimethyl sulfoxide, and water are mixed in parts by weight to obtain component B.

[0058] Preparation Example 2

[0059] Sodium ferrate and activated ceramic particles are provided, and the sodium ferrate and activated ceramic particles are mixed according to the weight parts and ball-milled for 45 min to obtain component A;

[0060] Benzoyl peroxide, dimethyl sulfoxide, and water are provided, and benzoyl peroxide, dimethyl sulfoxide, and water are mixed in parts by weight to obtain component B.

[0061] Preparation Example 3

[0062] Sodium ferrate and activated ceramic particles are provided, and the sodium ferrate and activated ceramic particles are mixed according to the weight parts and ball-milled for 60 min to obtain component A;

[0063] Benzoyl peroxide, dimethyl sulfoxide, and water are provided, and benzoyl peroxide, dimethyl sulfoxide, and water are mixed in parts by weight to obtain component B.

[0064] The following are Examples 1 to 3 of this application, each of which provides a bleaching agent.

[0065] The bleaching agents provided in Examples 1 to 3 of this application were prepared using the preparation methods of the bleaching agents provided in Examples 1 to 3.

[0066] In the bleaching agents provided in Examples 1-3 of this application, the mass ratio of component A to component B is 1:1; the weight proportions of each raw material component in component A are as follows: sodium ferrate 45 parts, activated ceramic particles 5 parts; the weight proportions of each raw material component in component B are as follows: benzoyl peroxide 20 parts, dimethyl sulfoxide 25 parts, water 50 parts; wherein, the activated ceramic particles are alumina, zirconium oxide, and silicon dioxide in a mass ratio of 1:1:1. Furthermore, in the bleaching agents provided in Examples 1-3, component B is further controlled with a pH buffer to maintain the pH value of component B in Examples 1-3 at 6.5, 7.0, and 7.5, respectively.

[0067] Performance testing:

[0068] A commercially available bleach (manufacturer: Changge Jinhao Chemical Co., Ltd.) was used as a comparison.

[0069] Two sets of bleaching experiments were conducted on anodic adhesive fabric that had undergone flattening, pre-setting, singeing, and weight reduction treatments:

[0070] The first group of bleaching experiments: The bleaching agents provided in Examples 1 to 3 and the bleaching agents selected in the comparative examples were used to bleach the eccentric adhesive fabric, and the whiteness of the bleached eccentric adhesive fabric and the residual amount of bleaching agent on the eccentric adhesive fabric were tested.

[0071] The second group of bleaching experiments: The bleaching agents provided in Examples 1 to 3 and the bleaching agents selected in the comparative example were exposed to light at room temperature for 30 days. Then, the treated bleaching agents were used to bleach the anodic adhesive fabric, and the whiteness of the bleached anodic adhesive fabric and the residual amount of bleaching agent on the anodic adhesive fabric were tested.

[0072] When using the bleaching agents provided in Examples 1 to 3, the A and B components of the bleaching agent are poured into the dyeing vat containing the anodic adhesive fabric in a 1:1 mass ratio, mixed, and then subjected to bleaching treatment.

[0073] Whiteness was measured using a spectrophotometer, and residue levels were measured using a high-performance liquid chromatograph. Specific results are shown in Table 1. Specifically, sodium ferrate was used as the detection standard when measuring residue levels in Examples 1-3; chloride was used as the detection standard when measuring residue levels in the comparative examples.

[0074] Table 1 Summary of test results for Examples 1-3 and comparative examples

[0075]

[0076] Referring to Table 1, the test results show that the bleaching agent provided in this application has a significantly higher bleaching strength for fabrics than commercially available bleaching agents, and the residue is significantly less. Comparing the first and second group bleaching experiments, it can be found that the bleaching agent provided in this application still exhibits superior bleaching effects and low residue after 30 days of light treatment. This indicates that the bleaching agent provided in this application has excellent bleaching performance, low residue, and is relatively stable. Furthermore, the bleaching agents prepared using the method provided in this application show little difference in performance within the ball milling time range, and the bleaching agent prepared in Example 2 exhibits the best effect.

[0077] The following are Examples 4 to 7 of this application, each providing a bleaching agent, and all are prepared using the preparation method of the bleaching agent provided in Preparation Example 2.

[0078] Example 4

[0079] Based on Example 2, the difference between this example and Example 2 is that the mass ratio between component A and component B in the bleach provided in this example is 1:2.

[0080] Example 5

[0081] Based on Example 2, the difference between this example and Example 2 is that the mass ratio between component A and component B in the bleach provided in this example is 1:3.

[0082] Example 6

[0083] Based on Example 2, the difference between this example and Example 2 is that the mass ratio between component A and component B in the bleach provided in this example is 1.5:2.

[0084] Example 7

[0085] Based on Example 2, the difference between this example and Example 2 is that the mass ratio between component A and component B in the bleach provided in this example is 2:3.

[0086] Performance testing:

[0087] The performance of the bleaching agents provided in Examples 1 to 3 was tested using the same testing method as that used for the bleaching agents provided in Examples 4 to 7 of this application. When using the bleaching agents provided in Examples 4 to 7, the A and B components of the bleaching agent were poured into the dyeing vat where the anodic adhesive fabric was located according to the mass ratio specified in each example, mixed, and then subjected to bleaching treatment. The specific test results are shown in Table 2.

[0088] Table 2 Summary of test results for Examples 4-7 and Comparative Examples

[0089]

[0090] Referring to Table 2, the test results show that the bleaching agents provided in Examples 4-7 all have high whiteness and low residue. However, the bleaching effect and stability of the bleaching agents provided in Examples 2 and 5-7 are not as good as those provided in Example 4. This indicates that the bleaching agent composed of components A and B in a specific ratio has better performance.

[0091] The following are Examples 8 to 13 of this application, each providing a bleaching agent, and all are prepared using the preparation method of the bleaching agent provided in Preparation Example 2.

[0092] Example 8

[0093] In the bleaching agent provided in this embodiment, the mass ratio of component A to component B is 1:2. The weight proportions of each raw material component in component A are as follows: 60 parts sodium ferrate and 10 parts activated ceramic particles. The weight proportions of each raw material component in component B are as follows: 30 parts benzoyl peroxide, 40 parts dimethyl sulfoxide, and 75 parts water. The activated ceramic particles are alumina, zirconium oxide, and silicon dioxide in a mass ratio of 1.5:1:1.5. Furthermore, a pH buffer is used to control the pH value of component B at 7.0.

[0094] Example 9

[0095] In the bleaching agent provided in this embodiment, the mass ratio of component A to component B is 1:2. The weight proportions of each raw material component in component A are as follows: 50 parts sodium ferrate and 6.5 parts activated ceramic particles. The weight proportions of each raw material component in component B are as follows: 23 parts benzoyl peroxide, 30 parts dimethyl sulfoxide, and 55 parts water. The activated ceramic particles are alumina, zirconium oxide, and silicon dioxide in a mass ratio of 2:1:2. Furthermore, a pH buffer is used to control the pH value of component B at 7.0.

[0096] Example 10

[0097] In the bleaching agent provided in this embodiment, the mass ratio of component A to component B is 1:2. The weight proportions of each raw material component in component A are as follows: sodium ferrate 59 parts, activated ceramic particles 9.5 parts. The weight proportions of each raw material component in component B are as follows: benzoyl peroxide 29 parts, dimethyl sulfoxide 38 parts, water 72 parts. The activated ceramic particles are alumina, zirconium oxide, and silicon dioxide in a mass ratio of 1:1:1. Furthermore, a pH buffer is used to control the pH value of component B at 7.0.

[0098] Example 11

[0099] In the bleaching agent provided in this embodiment, the mass ratio of component A to component B is 1:2. The weight proportions of each raw material component in component A are as follows: 54 parts sodium ferrate and 8 parts activated ceramic particles. The weight proportions of each raw material component in component B are as follows: 25 parts benzoyl peroxide, 33 parts dimethyl sulfoxide, and 60 parts water. The activated ceramic particles are alumina, zirconium oxide, and silicon dioxide in a mass ratio of 1:2:1. Furthermore, a pH buffer is used to control the pH value of component B at 7.0.

[0100] Example 12

[0101] In the bleaching agent provided in this embodiment, the mass ratio of component A to component B is 1:2. The weight proportions of each raw material component in component A are as follows: sodium ferrate 56 parts, activated ceramic particles 8.5 parts. The weight proportions of each raw material component in component B are as follows: benzoyl peroxide 26.5 parts, dimethyl sulfoxide 34.5 parts, water 64 parts. The activated ceramic particles are alumina, zirconium oxide, and silicon dioxide in a mass ratio of 1:1:1. Furthermore, a pH buffer is used to control the pH value of component B at 7.0.

[0102] Example 13

[0103] In the bleaching agent provided in this embodiment, the mass ratio of component A to component B is 1:2. The weight proportions of each raw material component in component A are as follows: 58 parts sodium ferrate and 9 parts activated ceramic particles. The weight proportions of each raw material component in component B are as follows: 28 parts benzoyl peroxide, 36 parts dimethyl sulfoxide, and 68 parts water. The activated ceramic particles are alumina, zirconium oxide, and silicon dioxide in a mass ratio of 1:1:1. Furthermore, a pH buffer is used to control the pH value of component B at 7.0.

[0104] Performance testing:

[0105] The performance of the bleaching agents provided in Examples 1-3 was tested using the same testing method as that used for the bleaching agents provided in Examples 8-13 of this application. When using the bleaching agents provided in Examples 8-13, the A and B components of the bleaching agent were poured into the dyeing vat containing the anodic adhesive fabric at a mass ratio of 1:2, mixed, and then subjected to bleaching treatment. The specific test results are shown in Table 3.

[0106] Table 3 Summary of test results for Examples 8-13 and comparative examples

[0107]

[0108] Referring to Table 3, the test results show that the residual amounts of the bleaching agents provided in Examples 8-13 are all relatively low. However, the bleaching effects and stability of the bleaching agents provided in Examples 4 and 8-10 are not as good as those provided in Examples 11-13. This indicates that by limiting the raw material components of components A and B in the bleaching agent, the performance of the bleaching agent is better.

[0109] The following are preparation examples 4 to 6 of this application, which each provide a method for preparing a bleaching agent.

[0110] Preparation Example 4

[0111] Sodium ferrate, activated ceramic particles, montmorillonite, and waterborne epoxy resin are provided. Montmorillonite and waterborne epoxy resin are added to sodium ferrate and activated ceramic particles, and ball milled for 30 min to obtain component A.

[0112] Benzoyl peroxide, dimethyl sulfoxide, and water are provided, and benzoyl peroxide, dimethyl sulfoxide, and water are mixed in parts by weight to obtain component B.

[0113] Preparation Example 5

[0114] Sodium ferrate, activated ceramic particles, montmorillonite, and waterborne epoxy resin are provided. Montmorillonite and waterborne epoxy resin are added to sodium ferrate and activated ceramic particles, and ball milled for 45 min to obtain component A.

[0115] Benzoyl peroxide, dimethyl sulfoxide, and water are provided, and benzoyl peroxide, dimethyl sulfoxide, and water are mixed in parts by weight to obtain component B.

[0116] Preparation Example 6

[0117] Sodium ferrate, activated ceramic particles, montmorillonite, and waterborne epoxy resin are provided. Montmorillonite and waterborne epoxy resin are added to sodium ferrate and activated ceramic particles, and ball milled for 60 min to obtain component A.

[0118] Benzoyl peroxide, dimethyl sulfoxide, and water are provided, and benzoyl peroxide, dimethyl sulfoxide, and water are mixed in parts by weight to obtain component B.

[0119] The following are Examples 14 to 16 of this application, each of which provides a bleaching agent.

[0120] The bleaching agents provided in Examples 14-16 of this application were prepared using the preparation methods of the bleaching agents provided in Examples 4-6, respectively.

[0121] In the bleaching agents provided in Examples 14-16 of this application, the mass ratio of component A to component B is 1:2; the weight proportions of each raw material component in component A are as follows: sodium ferrate 56 parts, activated ceramic particles 8.5 parts, montmorillonite 16.8 parts, and waterborne epoxy resin 5.6 parts; the weight proportions of each raw material component in component B are as follows: benzoyl peroxide 26.5 parts, dimethyl sulfoxide 34.5 parts, and water 64 parts; wherein, the activated ceramic particles are alumina, zirconium oxide, and silicon dioxide in a mass ratio of 1:1:1. Furthermore, in the bleaching agents provided in Examples 14-16, a pH buffer is used in component B to control the pH value of component B in Examples 14-16 to 7.0.

[0122] Performance testing:

[0123] The performance of the bleaching agents provided in Examples 1-3 was tested using the same testing method as that used for the bleaching agents provided in Examples 14-16 of this application. When using the bleaching agents provided in Examples 14-16, the A and B components of the bleaching agent were poured into the dyeing vat containing the anodic adhesive fabric at a mass ratio of 1:2, mixed, and then subjected to bleaching treatment. The specific test results are shown in Table 4.

[0124] Table 4 Summary of test results for Examples 14-16 and comparative examples

[0125]

[0126] Referring to Table 4, the test results in Table 4 show that the residual amount of the bleaching agents provided in Examples 14 to 16 is relatively small, and the bleaching effect and stability of the bleaching agents provided in Examples 14 to 16 are better. This illustrates the superiority of adding montmorillonite and waterborne epoxy resin to component A in the bleaching agent provided in this application.

[0127] Example 17

[0128] Based on Example 15, the difference between this example and Example 15 is that in the bleaching agent provided in this example, component A contains 22.4 parts of montmorillonite and 8.4 parts of waterborne epoxy resin.

[0129] Example 18

[0130] Based on Example 15, the difference between this example and Example 15 is that in the bleaching agent provided in this example, component A contains 28 parts of montmorillonite and 11.2 parts of waterborne epoxy resin.

[0131] Performance testing:

[0132] The performance of the bleaching agents provided in Examples 1-3 was tested using the same testing method as that used for the bleaching agents provided in Examples 17-18 of this application. When using the bleaching agents provided in Examples 17-18, the A and B components of the bleaching agent were poured into the dyeing vat containing the anodic adhesive fabric at a mass ratio of 3:2, mixed, and then subjected to bleaching treatment. The specific test results are shown in Table 5.

[0133] Table 5 Summary of test results for Examples 17-18 and comparative examples

[0134]

[0135] Referring to Table 5, the test results in Table 5 show that the residual amount of the bleaching agents provided in Examples 17-18 is relatively small, and the bleaching effect and stability of the bleaching agents provided in Examples 17-18 are also relatively superior. This further illustrates the superiority of adding montmorillonite and waterborne epoxy resin to component A in the bleaching agent provided in this application.

[0136] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A bleaching agent, characterized in that, It includes component A and component B, and the mass ratio between component A and component B is 1~2:1~3; Component A comprises the following raw material components by weight: 45-60 parts of sodium ferrate and 5-10 parts of active ceramic particles. Component B comprises the following raw material components by weight: 20-30 parts of benzoyl peroxide, 25-40 parts of dimethyl sulfoxide, and 50-75 parts of water. Component A further includes montmorillonite and waterborne epoxy resin; wherein the mass ratio between montmorillonite and sodium ferrate is 0.3~0.5:1, and the mass ratio between waterborne epoxy resin and sodium ferrate is 0.1~0.2:

1.

2. The bleaching agent according to claim 1, characterized in that, The mass ratio between component A and component B is 1:

2.

3. The bleaching agent according to claim 1, characterized in that, Component A comprises the following raw material components by weight: 54-58 parts of sodium ferrate and 8-9 parts of active ceramic particles; Component B comprises the following raw material components by weight: 25-28 parts of benzoyl peroxide, 33-36 parts of dimethyl sulfoxide, and 60-68 parts of water.

4. The bleaching agent according to claim 1, characterized in that, The B component further includes a pH buffer, which controls the pH value of the B component to be 6.5 to 7.

5.

5. The bleaching agent according to claim 1, characterized in that, In component A, the active ceramic particles include alumina, zirconium oxide, and silicon dioxide, and the mass ratio of alumina, zirconium oxide, and silicon dioxide is 1~2:1:1~2.

6. A method for preparing the bleaching agent according to claim 1, characterized in that, Includes the following steps: Sodium ferrate and activated ceramic particles are provided, and the sodium ferrate and activated ceramic particles are mixed according to the weight parts and ball-milled for 30~60 min to obtain component A; Benzoyl peroxide, dimethyl sulfoxide, and water are provided, and benzoyl peroxide, dimethyl sulfoxide, and water are mixed in parts by weight to obtain component B.

7. The method for preparing the bleaching agent according to claim 6, characterized in that, The preparation of component A also includes providing montmorillonite and waterborne epoxy resin, adding montmorillonite and waterborne epoxy resin to sodium ferrate and active ceramic particles, and ball milling for 30-60 minutes to obtain component A. The mass ratio of montmorillonite to sodium ferrate is 0.3~0.5:1, and the mass ratio of waterborne epoxy resin to sodium ferrate is 0.1~0.2:

1.

8. The application of the bleaching agent according to claim 1 in the field of fabric bleaching.

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