Glass mildew-proof isolation powder and its preparation method and application

Abstract

The present application relates to a glass mildew-proof isolation powder and a preparation method thereof. The components of the glass mildew-proof isolation powder include: soluble starch, potassium sorbate, sodium ascorbate and an antiseptic water absorbent; the antiseptic water absorbent includes at least one of boric acid, polybasic organic acid and polybasic organic acid salt. Soluble starch can isolate and protect the glass surface, potassium sorbate can play a role in inhibiting bacteria and mildew, sodium ascorbate can inhibit the weathering of the glass surface, and the addition of an antiseptic water absorbent composed of at least one of boric acid, polybasic organic acid and polybasic organic acid salt can play a role in preventing corrosion of the glass surface, which is conducive to absorbing moisture in the air and preventing moisture from weathering the glass surface. Furthermore, it can also form a synergistic effect with sodium ascorbate to enhance the effects of anti-oxidation, inhibiting mold growth, and preventing oxidation and weathering of the glass surface.

Description

Technical Field

[0001] The present application relates to the field of glass technology, and in particular to a glass mildew-proof isolation powder and a preparation method and application thereof. Background Art

[0002] When glass is in contact with the surrounding air, as the ambient temperature and humidity change, the glass will react with some chemicals, thus inducing the glass to mold. To solve the problem of glass mold, anti-mold isolation powder or isolation paper is usually spread on the glass surface for protection. Anti-mold isolation powder has multiple advantages such as low cost, mold resistance, and moisture resistance. Compared with isolation paper, glass manufacturers prefer to use anti-mold isolation powder.

[0003] In recent years, as the requirements for glass quality have become higher and higher, higher requirements have also been put forward for glass anti-mildew isolation powder. High-quality glass anti-mildew isolation powder is required not to affect the glass transmittance, be easy to clean, and meet environmental protection requirements.

[0004] There are mainly two types of traditional anti-mildew isolation powders on the market. One is acrylic resin glass anti-mildew isolation powder, which is highly toxic and does not meet the requirements of environmental protection policies. The other is wood powder / coconut shell glass anti-mildew isolation powder, which has a great impact on the transmittance of glass and is difficult to clean thoroughly. The residual anti-mildew isolation powder can easily lead to poor coating of glass deep processing. Summary of the invention

[0005] Based on this, the present application provides a glass mildew-proof isolation powder which has good mildew-proof effect, little effect on glass transmittance, is easy to clean, and is environmentally friendly, as well as a preparation method and application thereof.

[0006] An embodiment of the present application provides a glass mildew-proof isolation powder, the components of which include: soluble starch, potassium sorbate, sodium ascorbate and an antiseptic water absorbent;

[0007] The antiseptic water absorbent comprises at least one of boric acid, polybasic organic acid and polybasic organic acid salt.

[0008] In one embodiment, the components include, by weight:

[0009] 40 to 60 parts of the soluble starch,

[0010] 0.05 to 0.5 parts of potassium sorbate,

[0011] 40 to 60 parts of the antiseptic water absorbent, and

[0012] The sodium ascorbate is 0.05 to 0.3 parts.

[0013] In one embodiment, the polybasic organic acid includes one or both of adipic acid and citric acid.

[0014] In one embodiment, the polybasic organic acid salt includes one or both of adipate and citrate.

[0015] In one embodiment, the particle size of the glass mildew-proof isolation powder is 30 mesh to 250 mesh.

[0016] An embodiment of the present application further provides a method for preparing the glass mildew-proof isolation powder as described in any of the above embodiments, comprising the following steps:

[0017] mixing the components to form a mixture;

[0018] The water in the mixture is removed.

[0019] In one embodiment, the step of removing water from the mixture comprises:

[0020] The mixture is dried.

[0021] In one embodiment, the drying temperature is 85-95°C.

[0022] In one embodiment, before the step of removing water from the mixture, the following steps are also included:

[0023] The mixture was passed through a 200-250 mesh sieve, and the material on the sieve was collected for removing moisture.

[0024] In one embodiment, before the step of forming the mixture, the following steps are also included:

[0025] The components were sieved through a 30-50 mesh sieve and the sieve contents were collected for mixing.

[0026] An embodiment of the present application also provides an application of the glass mildew-proof isolation powder described in any of the above embodiments in a glass mildew-proof isolation process.

[0027] The present application provides a glass mildew-proof isolation powder, which comprises soluble starch, potassium sorbate, sodium ascorbate and an antiseptic water absorbent, wherein the antiseptic water absorbent comprises at least one of boric acid, polybasic organic acid and polybasic organic acid salt. The soluble starch can isolate and protect the glass surface, potassium sorbate can play a role in antibacterial and mildew-proofing, sodium ascorbate can inhibit the weathering of the glass surface, and the addition of an antiseptic water absorbent composed of at least one of boric acid, polybasic organic acid and polybasic organic acid salt can play a role in anti-corrosion of the glass surface, which is conducive to absorbing moisture in the air and preventing moisture from weathering the glass surface. Furthermore, it can also form a synergistic effect with sodium ascorbate to enhance the effects of anti-oxidation, inhibiting mold growth and preventing oxidation and weathering of the glass surface. The above-mentioned glass mildew-proof isolation powder has little effect on the transparency of the glass, has good fluidity, is easily soluble in water, is easy to clean and thorough, can reduce the adverse effects of unclean cleaning on further deep processing of the glass, and the soluble starch is degradable and meets environmental protection requirements. DETAILED DESCRIPTION

[0028] For ease of understanding of the present application, the present application will be described more comprehensively below in conjunction with embodiments. However, the present application can be implemented in many different forms and is not limited to the embodiments described in the present application. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0029] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in this application includes any and all combinations of one or more related listed items.

[0030] In the present application, the technical features described in an open manner include closed technical solutions composed of the listed features, and also include open technical solutions containing the listed features.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features.

[0032] In the present application, "plurality", "multiple", "multiple times", "plurality", etc., unless otherwise specified, refer to a number greater than or equal to 2. For example, "one or more" means one or greater than or equal to two.

[0033] In the present application, references to “combinations thereof”, “any combination thereof”, “any combination thereof”, etc. include all suitable combinations of any two or more of the listed items.

[0034] In the present application, the “suitable” mentioned in “suitable combination”, “suitable method”, “any suitable method”, etc. shall be based on the ability to implement the technical solution of the present application, solve the technical problems of the present application, and achieve the expected technical effects of the present application.

[0035] In the present application, the terms “preferred”, “better”, “more preferred” and “suitable” are only used to describe implementation methods or examples with better effects, and it should be understood that they do not constitute limitations on the scope of protection of the present application.

[0036] In the present application, the terms “further”, “furthermore”, “particularly”, etc. are used for descriptive purposes to indicate differences in content, but should not be construed as limiting the scope of protection of the present application.

[0037] In this application, "optionally", "optional" and "optional" refer to optional, that is, to any one of the two parallel schemes of "yes" or "no". If multiple "options" appear in a technical solution, unless otherwise specified and there is no contradiction or mutual restriction, each "optional" is independent.

[0038] In the present application, when it comes to a numerical interval (i.e., a numerical range), unless otherwise specified, the optional numerical distribution is considered continuous within the above numerical interval, and includes the two numerical endpoints (i.e., the minimum value and the maximum value) of the numerical range, and each numerical value between the two numerical endpoints. Unless otherwise specified, when a numerical interval only refers to an integer within the numerical interval, it includes the two endpoint integers of the numerical range, and each integer between the two endpoints. In this article, it is equivalent to directly listing each integer, such as t is an integer selected from 1 to 10, indicating that t is any integer selected from the integer group consisting of 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10. In addition, when multiple ranges are provided to describe features or characteristics, these ranges can be combined. In other words, unless otherwise specified, the ranges disclosed herein should be understood to include any and all sub-ranges included therein.

[0039] The temperature parameters in this application, unless otherwise specified, are allowed to be either constant temperature treatment or to vary within a certain temperature range. It should be understood that the constant temperature treatment allows the temperature to fluctuate within the accuracy range controlled by the instrument. Fluctuations within the range of ±5°C, ±4°C, ±3°C, ±2°C, and ±1°C are allowed.

[0040] An embodiment of the present application provides a glass mildew-proof isolation powder, the components of which include: soluble starch, potassium sorbate, sodium ascorbate and an antiseptic water absorbent;

[0041] The antiseptic water absorbent comprises at least one of boric acid, polybasic organic acid and polybasic organic acid salt.

[0042] Soluble starch has the characteristics of strong adhesion to glass and strong particle fluidity. Using soluble starch as the main raw material of glass mildew-proof isolation powder can effectively form an isolation protective layer on the glass surface. Adding potassium sorbate to the raw materials of glass mildew-proof isolation powder can play an antibacterial and mildew-proof role. Adding boric acid and / or polybasic organic acids and their salts to the raw materials of glass mildew-proof isolation powder can play an anti-corrosion role on the glass surface, which is conducive to absorbing moisture in the air and preventing moisture from causing weathering of the glass surface. Sodium ascorbate also has a good effect of inhibiting weathering of the glass surface. Compounding boric acid and / or polybasic organic acids and / or polybasic organic acid salts with sodium ascorbate can form a synergistic effect with sodium ascorbate, further enhancing the antioxidant effect of glass, and has a good inhibitory effect on the growth of biological mold species, which can effectively prevent moisture from oxidizing and weathering the glass surface. The glass anti-mildew isolation powder provided above has good anti-mildew and isolation effects, and the glass anti-mildew isolation powder has good fluidity, does not affect the transparency of the glass, and is easy to clean. The soluble starch is slightly soluble in cold water and is more easily soluble in boiling water. It has better degradation performance and easy cleaning performance than traditional acrylic resin glass anti-mildew isolation powder, wood powder glass anti-mildew isolation powder, and coconut shell glass anti-mildew isolation powder, can reduce the adverse effects on the subsequent deep processing of the glass, and is more green and environmentally friendly.

[0043] In one embodiment, the components include, by weight:

[0044] 40~60 parts of soluble starch,

[0045] Potassium sorbate 0.05~0.5 parts,

[0046] 40 to 60 parts of antiseptic water absorbent, and

[0047] Sodium ascorbate 0.05 to 0.3 parts.

[0048] The soluble starch, potassium sorbate, antiseptic water absorbent, sodium ascorbate and other components in the glass mildew-proof isolation powder are mixed according to a specific range of weight parts, which can make the raw materials play a better synergistic role, and the product has better mildew-proof and isolation effects, and is easier to clean thoroughly, and has less impact on the glass transmittance. It can be understood that the weight parts of soluble starch, potassium sorbate, antiseptic water absorbent, and sodium ascorbate in the glass mildew-proof isolation powder can take any value within the above numerical range. For example, the weight parts of soluble starch can be, but not limited to, 40 parts, 41 parts, 42 parts, 43 parts, 44 parts, 45 parts, 46 parts, 47 parts, 48 ​​parts, 49 parts, 50 parts, 51 parts, 52 parts, 53 parts, 54 parts, 55 parts, 56 parts, 57 parts, 58 parts, 59 parts, 60 parts, etc. For example, the weight portion of potassium sorbate can be, but is not limited to, 0.05, 0.06, 0.07, 0.08, 0.09, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, etc. For example, the weight portion of the antiseptic water absorbent can be, but is not limited to, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, etc. For example, the weight portion of sodium ascorbate can be, but is not limited to, 0.05, 0.06, 0.07, 0.08, 0.09, 0.1, 0.15, 0.2, 0.25, 0.3, and the like.

[0049] In the present application, polybasic organic acid refers to organic acids of dibasic or higher valence, for example, it may include but is not limited to one or more combinations of dibasic acid, tribasic acid, and tetrabasic acid. Further, it may be one or two of dibasic acid and tribasic acid. Furthermore, it may be one or two of adipic acid and citric acid.

[0050] In the present application, polybasic organic acid salt refers to organic acid salts of dibasic or higher, such as, but not limited to, one or more combinations of dibasic acid salts, tribasic acid salts, and tetrabasic acid salts. Further, it can be one or two of dibasic acid salts and tribasic acid salts. Further, it can be one or two of adipate and citrate. It is understandable that the salt can be, for example, but not limited to, sodium salt, potassium salt, etc.

[0051] In one embodiment, the particle size of the glass mildewproof isolation powder is 30 mesh to 250 mesh. The particle size of the glass mildewproof isolation powder is suitable, which can not only prevent the glass mildewproof isolation powder particles from being too large to scratch the glass, but also improve the uniformity of the powder spreading, and prevent the excessively fine mildewproof powder from flying. It is understandable that the particle size of the glass mildewproof isolation powder can be, for example, but not limited to, 30 mesh, 40 mesh, 50 mesh, 60 mesh, 70 mesh, 80 mesh, 90 mesh, 100 mesh, 110 mesh, 120 mesh, 130 mesh, 140 mesh, 150 mesh, 160 mesh, 170 mesh, 180 mesh, 190 mesh, 200 mesh, 210 mesh, 220 mesh, 230 mesh, 240 mesh, 250 mesh, etc. It is understandable that the particle size of each powder particle in the glass mildewproof powder is not necessarily a uniform size, but can also be any combination of multiple different particle sizes. Preferably, the particle size of the glass mildew-proof isolation powder is 40 mesh to 200 mesh.

[0052] An embodiment of the present application further provides a method for preparing the glass mildew-proof isolation powder as in any of the above embodiments, comprising the following steps:

[0053] combining the components to form a mixture;

[0054] Remove moisture from the mixture.

[0055] In the above method, soluble starch, potassium sorbate, sodium ascorbate and antiseptic water absorbent are used as main raw materials to mix and remove water to prepare glass mildew-proof isolation powder. Soluble starch can isolate and protect the glass surface, potassium sorbate can play a role in antibacterial and mildew-proofing, sodium ascorbate can inhibit the weathering of the glass surface, and then adding an antiseptic water absorbent composed of at least one of boric acid, polybasic organic acid and polybasic organic acid salt can play a role in anti-corrosion of the glass surface, which is conducive to absorbing moisture in the air and preventing moisture from weathering the glass surface. Further, it can also form a synergistic effect with sodium ascorbate to enhance the effects of anti-oxidation, inhibiting mold growth, and preventing oxidation and weathering of the glass surface. The glass mildew-proof isolation powder prepared by the above method has little effect on the transparency of the glass, has good fluidity, is easily soluble in water, is easy to clean and thorough, can reduce the adverse effects of unclean cleaning on further deep processing of the glass, and the soluble starch is degradable and meets environmental protection requirements.

[0056] In one embodiment, the step of removing water from the mixture comprises:

[0057] The mixture is dried.

[0058] The moisture in the mixture can be quickly removed by drying, so that the mixture dries quickly.

[0059] In one embodiment, the drying temperature is 85-95°C. At this temperature, the moisture in each component can be fully dried, so that the obtained mildew-proof isolation powder is drier and has a lower moisture content, and has better mildew-proof and isolation effects. It can be understood that the drying temperature can be, for example, but not limited to, 85°C, 86°C, 87°C, 88°C, 89°C, 90°C, 91°C, 92°C, 93°C, 94°C, 95°C, etc. Preferably, the drying temperature is 88°C-92°C. More preferably, the drying temperature is 90°C.

[0060] Furthermore, the drying time is 10 hours to 14 hours. The drying time is long enough to ensure that the moisture in the mixture is removed as thoroughly as possible, so that the obtained glass mildew-proof isolation powder is drier and has a better mildew-proof effect. It can be understood that the drying time can be, for example but not limited to, 10 hours, 11 hours, 12 hours, 13 hours, 14 hours, etc. Preferably, the drying time is 11h to 13h. More preferably, the drying time is 12h. In one embodiment, before the step of removing moisture from the mixture, the following steps are also included:

[0061] The mixture was passed through a 150-250 mesh sieve and the material on the sieve was collected for water removal.

[0062] After mixing, the mixture is passed through a 150-250 mesh sieve and the sieve material is collected to remove moisture to prepare the glass mildew-proof insulation powder, which can ensure that the glass mildew-proof insulation powder has a certain suitable particle size, is easy to lay evenly, is easier to flow and clean, and can avoid dust flying due to being too fine. It can be understood that the mesh number of the sieve through which the mixture is sieved can be, for example, but not limited to, 150 mesh, 160 mesh, 170 mesh, 180 mesh, 190 mesh, 200 mesh, 210 mesh, 220 mesh, 230 mesh, 240 mesh, 250 mesh, etc. Preferably, the mixture is passed through a 180-220 mesh sieve. More preferably, the mixture is passed through a 200 mesh sieve.

[0063] In one embodiment, before the step of forming the mixture, the following steps are also included:

[0064] Pass each component through a 30-50 mesh sieve and collect the sieve contents for mixing.

[0065] Before mixing, each raw material such as soluble starch, potassium sorbate, sodium ascorbate and preservative water absorbent can be sieved through a 30-50 mesh sieve, which can prevent the raw material particles from being too large to scratch the glass and improve the uniformity of the powder. It can be understood that the mesh number of the sieve through which each component is sieved can be, for example, but not limited to, 30 mesh, 40 mesh, 50 mesh, etc. Preferably, each component is sieved through a 35-45 mesh sieve. More preferably, each component is sieved through a 40 mesh sieve.

[0066] An embodiment of the present application further provides an application of the glass mildew-proof isolation powder in any of the above embodiments in a glass mildew-proof isolation process.

[0067] The following specific examples further illustrate the glass mildew-proof isolation powder of the present application and its preparation method and application. The following examples are relatively specific, and it can be understood that they are not limited to these in other embodiments. In the following specific embodiments, the instruments, reagents, and materials involved, unless otherwise specified, are all conventional instruments, reagents, and materials already available in the prior art, and can be obtained through regular commercial channels. The experimental methods, detection methods, etc. involved in the following embodiments, unless otherwise specified, are all conventional experimental methods and detection methods already available in the prior art.

[0068] Example 1

[0069] According to weight, 55 parts of soluble starch, 44.5 parts of boric acid, 0.45 parts of potassium sorbate, and 0.05 parts of sodium ascorbate were weighed, and passed through a 40-mesh sieve respectively, and the undersize materials were collected. The undersize materials were mixed and stirred to form a mixture, and the mixture was passed through a 200-mesh sieve, and the oversize materials were collected. The oversize materials were placed at 90°C and dried for 12 hours to prepare glass mildew-proof isolation powder.

[0070] Example 2

[0071] According to weight, 48 parts of soluble starch, 34 parts of adipic acid, 17.65 parts of citric acid, 0.2 parts of potassium sorbate and 0.15 parts of sodium ascorbate were weighed, and passed through a 40-mesh sieve respectively, and the undersize materials were collected. The undersize materials were mixed and stirred to form a mixture, and the mixture was passed through a 200-mesh sieve, and the oversize materials were collected. The oversize materials were placed at 90°C and dried for 12 hours to prepare glass mildew-proof isolation powder.

[0072] Example 3

[0073] According to weight, 42 parts of soluble starch, 30 parts of boric acid, 17.8 parts of adipic acid, 10 parts of citric acid, 0.1 part of potassium sorbate and 0.1 part of sodium ascorbate were weighed, and passed through a 40-mesh sieve respectively, and the undersize materials were collected. The undersize materials were mixed and stirred to form a mixture, and the mixture was passed through a 200-mesh sieve, and the oversize materials were collected. The oversize materials were placed at 90°C and dried for 12 hours to prepare glass mildew-proof isolation powder.

[0074] Example 4

[0075] According to weight, 58 parts of soluble starch, 9.52 parts of boric acid, 24 parts of adipic acid, 8 parts of citric acid, 0.4 parts of potassium sorbate and 0.08 parts of sodium ascorbate were weighed, and they were passed through a 40-mesh sieve respectively, and the undersize materials were collected. The undersize materials were mixed and stirred to form a mixture, and the mixture was passed through a 200-mesh sieve, and the oversize materials were collected. The oversize materials were placed at 90°C and dried for 12 hours to prepare glass mildew-proof isolation powder.

[0076] Example 5

[0077] According to weight, 45 parts of soluble starch, 5 parts of boric acid, 24 parts of adipic acid, 24 parts of citric acid, 0.65 parts of sodium adipate, 1 part of sodium citrate, 0.1 parts of potassium sorbate and 0.25 parts of sodium ascorbate were weighed, and they were sieved through 40 mesh sieves respectively, and the undersize materials were collected. The undersize materials were mixed and stirred to form a mixture, and the mixture was sieved through a 200 mesh sieve, and the oversize materials were collected. The oversize materials were dried at 90°C for 12 hours to prepare glass mildew-proof isolation powder.

[0078] Comparative Example 1

[0079] Purchase a common glass anti-mildew isolation powder on the market, which is an acrylic resin type of glass anti-mildew isolation powder.

[0080] Comparative Example 2

[0081] Purchase a common glass anti-mildew isolation powder on the market, which is a coconut shell type glass anti-mildew isolation powder.

[0082] Comparative Example 3

[0083] Purchase a common glass anti-mildew isolation powder on the market, the type of glass anti-mildew isolation powder is wood.

[0084] Comparative Example 4

[0085] Compared with Example 3, the difference is that the soluble starch is replaced by acrylic resin. Specifically:

[0086] According to weight, 42 parts of acrylic resin, 30 parts of boric acid, 17.8 parts of adipic acid, 10 parts of citric acid, 0.1 part of potassium sorbate and 0.1 part of sodium ascorbate were weighed, and passed through a 40-mesh sieve respectively, and the undersize materials were collected. The undersize materials were mixed and stirred to form a mixture, and the mixture was passed through a 200-mesh sieve, and the oversize materials were collected. The oversize materials were placed at 90° C. and dried for 12 hours to prepare glass mildew-proof isolation powder.

[0087] Comparative Example 5

[0088] Compared with Example 2, the difference is that the total weight is unchanged and potassium sorbate and sodium ascorbate are not contained. Specifically:

[0089] According to weight, 48 parts of soluble starch, 34 parts of adipic acid, and 18 parts of citric acid were weighed, and they were passed through a 40-mesh sieve respectively. The undersize materials were collected, and the undersize materials were mixed and stirred to form a mixture. The mixture was passed through a 200-mesh sieve, and the oversize materials were collected. The oversize materials were placed at a temperature of 90°C and dried for 12 hours to prepare glass mildew-proof isolation powder.

[0090] Comparative Example 6

[0091] Compared with Example 3, the difference is that the total weight is unchanged and sodium ascorbate is not contained. Specifically:

[0092] According to weight, 42 parts of soluble starch, 30 parts of boric acid, 17.8 parts of adipic acid, 10 parts of citric acid, and 0.2 parts of potassium sorbate were weighed, and passed through a 40-mesh sieve respectively, and the undersize materials were collected. The undersize materials were mixed and stirred to form a mixture, and the mixture was passed through a 200-mesh sieve, and the oversize materials were collected. The oversize materials were placed at 90°C and dried for 12 hours to prepare glass mildew-proof isolation powder.

[0093] The glass mildew-proof isolation powders of Examples 1 to 5 and Comparative Examples 1 to 6 were tested and compared in terms of appearance, odor, particle size, mildew-proof effect, isolation effect, cleaning effect, and other properties. The test results are shown in Table 1 below.

[0094] Appearance test method: Visually inspect the powder color and state of the glass anti-mildew isolation powder.

[0095] Odor test method: Smell to determine whether there is a slight sour smell or other special smell.

[0096] Particle size test method: Pass the glass mildew-proof isolation powder through 40 and 200 mesh sieves.

[0097] Anti-mildew effect test method: Anti-mildew test is carried out in a constant temperature and humidity chamber, using glass with a specification of 300mm*300mm, 5 pieces / group, and interlayer glass with anti-mildew isolation powder. The test conditions are 80℃, humidity 85% and continuous operation for 72 hours. The glass surface is not weathered and no mildew growth occurs, which meets the requirements.

[0098] Isolation effect test method: Use glass with a specification of 300mm*300mm, evenly apply glass anti-mildew isolation powder on the surface, then overlap another piece of glass of the same size, apply pressure (about 5 kg), and rub it 30 times with a stroke of about 1 cm. If the glass surface is not scratched, it meets the requirements.

[0099] Cleaning effect: Place the glass sample after the isolation effect test at the faucet, use tap water to rinse the surface, visually inspect the cleaning effect, residue on the glass surface, and the effect of the cleaning fluid. If there is residue on the glass surface, it is not conducive to the deep processing of the glass and may easily lead to poor coating. If there are solid particles in the cleaning fluid, higher requirements for environmental protection treatment will be incurred, resulting in higher costs.

[0100] Table 1 Test results of glass mildew-proof isolation powder performance

[0101]

[0102] From Table 1 above, it can be seen that the glass mildew-proof isolation powder prepared in Examples 1 to 5 has good performance in appearance, odor, particle size, isolation effect, mildew-proof effect, and cleaning effect. However, the three common glass mildew-proof isolation powders on the market in Comparative Examples 1 to 3 will produce a small amount of residue after cleaning, and a certain amount of solid particles will float in the cleaning liquid, which will not only have a certain impact on the transmittance of the glass itself, thereby affecting subsequent deep processing, but also fail to meet environmental protection requirements.

[0103] Compared with Example 3, Comparative Example 4 replaces the soluble starch with acrylic resin, which will produce more residues after cleaning, and a certain amount of solid particles will float in the cleaning liquid. Compared with Example 2, Comparative Example 5 does not contain potassium sorbate and sodium ascorbate, has a poor mildew prevention effect, and will produce a small amount of residue after cleaning. Compared with Example 3, Comparative Example 6 does not contain sodium ascorbate, and will produce a small amount of residue after cleaning. It can be seen that if the components of the glass mildew-proof isolation powder are not a combination of soluble starch, potassium sorbate, sodium ascorbate and preservative water absorbent, it is impossible to achieve multiple good comprehensive effects such as good mildew prevention effect, small impact on glass transmittance, easy cleaning, and green environmental protection.

[0104] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0105] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of this application. Therefore, the protection scope of the patent of this application shall be subject to the attached claims.

Claims

1. A glass mildew-proof isolation powder, characterized in that: It is composed of the following components: 40~60 parts of soluble starch, Potassium sorbate 0.05~0.5 parts, 40 to 60 parts of antiseptic water absorbent, and 0.05 to 0.3 parts of sodium ascorbate; The antiseptic water absorbent comprises at least one of boric acid, polybasic organic acid and polybasic organic acid salt.

2. The glass mildew-proof isolation powder according to claim 1, characterized in that: The polybasic organic acid includes one or both of adipic acid and citric acid.

3. The glass mildew-proof isolation powder according to claim 1, characterized in that: The polybasic organic acid salt includes one or both of adipate and citrate.

4. The glass mildew-proof isolation powder according to claim 1, characterized in that: The particle size of glass anti-mildew isolation powder is 30 mesh ~ 250 mesh.

5. A method for preparing the glass mildew-proof isolation powder according to any one of claims 1 to 4, characterized in that: The steps include: mixing the components to form a mixture; The water in the mixture is removed.

6. The method for preparing the glass mildew-proof isolation powder according to claim 5, characterized in that: The step of removing water from the mixture comprises: The mixture is dried.

7. The method for preparing the glass mildew-proof isolation powder according to any one of claims 5 to 6, characterized in that: The drying temperature is 85~95℃.

8. The method for preparing the glass mildew-proof isolation powder according to any one of claims 5 to 6, characterized in that: Before the step of removing the water in the mixture, the following steps are also included: The mixture was passed through a 200-250 mesh sieve, and the material on the sieve was collected for removing moisture.

9. The method for preparing the glass mildew-proof isolation powder according to any one of claims 5 to 6, characterized in that: Before the step of forming the mixture, the following steps are also included: The components were sieved through a 30-50 mesh sieve and the sieve contents were collected for mixing.

10. Use of the glass mildew-proof isolation powder according to any one of claims 1 to 4 in a glass mildew-proof isolation process.

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