JP2016089129A - Cleaning liquid using photocatalyst and carpet cleaning method using the cleaning liquid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cleaning liquid which is produced by improving a conventional cleaning liquid which is mainly formed of a photocatalyst titanic oxide, and a carpet cleaning method using the cleaning liquid.SOLUTION: The cleaning liquid is formed of: a water including a less amount of impurities; and apatite-coated titanium oxide, peroxide, citric acid, and sodium metasilicate contained in the water, for solving the problem. When cleaning a carpet using the cleaning liquid, the cleaning liquid is sprayed to a surface of the carpet, then the carpet is left for some time, then brushing is performed to the surface of the carpet, then contamination and odor components which are separated from the carpet are absorbed to the apatite-grains which coat the surfaces of the photocatalyst titanium oxide grains in the cleaning liquid, for, decomposing and making them harmless by an oxidative effect of the photocatalyst titanium oxide grains.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a cleaning liquid using a photocatalyst and a carpet cleaning method using the cleaning liquid.

  For example, carpets are contaminated not only with inorganic substances such as mud and sand, but also with dust including various organic substances such as pet hair, food waste and juice, textile waste from clothes, mold, mites, etc. Regular cleaning and cleaning are essential.

  In the cleaning work, it is natural to suck, collect, and remove the above dust using a vacuum cleaner, but today, organic components are removed, decomposed, sterilized, mildew-proofed, deodorized, etc. A cleaning agent containing titanium oxide having a photocatalytic function is used for these purposes.

  Patent Document 1 below describes a fiber product or a fiber processed product to which a deodorizing and antibacterial function is added by kneading or adhering apatite-coated photocatalytic titanium oxide particles. Patent Document 2 listed below describes a carpet maintenance method including a step of spraying a titanium oxide aqueous solution onto a carpet surface in order to give the carpet antifouling, antibacterial, and air purification effects. Further, as a general carpet cleaning agent, one using a surfactant instead of titanium oxide has been conventionally used.

  However, titanium oxide as a conventional photocatalyst alone has a shortcoming in that it is not effective immediately, and it is difficult to produce an effect on stubborn dirt and stains. In addition, in the case of using a surfactant, spots and odor components cannot be decomposed, and a large amount of water is required to remove the surfactant after washing, and it takes time to dry the water. There was also a problem that it was necessary to treat waste water.

JP 2004-052147 A JP-A-2005-237841

  The present invention has been made to solve the above-mentioned problems, and the object of the present invention is to add a photocatalyst by adding other components having a decomposition ability such as dirt and stains to a cleaning liquid using the photocatalyst. A clean and comfortable room with a small amount of cleaning fluid that is friendly to humans and the global environment, in addition to removing dirt and stains, as well as deodorizing, antibacterial, and antifungal. It is an object of the present invention to provide a cleaning method for carpets using this cleaning liquid, and a cleaning liquid that can shorten the period of stoppage of use until it becomes usable after cleaning.

  In order to solve the above-described problems, a cleaning liquid using the photocatalyst according to the present invention includes water with less impurities, a small amount of apatite-coated titanium oxide added to the water, peroxide, citric acid, It consists of sodium metasilicate.

  At that time, the cleaning liquid according to the present invention can be used for carpet cleaning.

  Furthermore, according to the present invention, the cleaning liquid is composed of [98.00 ± 9.80]% water with less impurities and [0.70 ± 0.07]% (percentages are compounding ratios, and so on). Apatite-coated titanium oxide, [0.20 ± 0.02]% peroxide, [0.10 ± 0.01]% citric acid, and [1.00 ± 0.10]% meta And comprising sodium silicate.

  In that case, the apatite-coated titanium oxide is composed of [0.60 ± 0.06]% titanium oxide and [0.10 ± 0.01]% apatite with respect to the water. .

  Further, the sodium metasilicate is a water glass-like aqueous solution.

  Further, the liquid property of the cleaning liquid is pH 11.5 ± 1.

  According to the present invention, when cleaning the carpet using the cleaning liquid according to the present invention, a step of removing dust adhering to the carpet with a vacuum cleaner, and the cleaning liquid according to claim 1 on the surface of the carpet. Spraying the undiluted solution or a diluted solution diluted with water as necessary, and then leaving it for 4 to 12 minutes to peel off and disperse dirt, odor components, etc. from the carpet fibers, and a washing machine with a brush on the surface of the carpet At the same time as drying of the water of the cleaning liquid, the peeling, dispersed dirt, odor components, etc. are adsorbed on the apatite particles covering the surface of the photocatalytic titanium oxide particles in the cleaning liquid, and the photocatalytic titanium oxide particles are oxidized. A step of decomposing and detoxifying by the action and raising other dirt on the carpet surface; Characterized in that it comprises the steps of: adsorbing, removed by washing machine fitted with a Yanpatto or bone net putt the lifted dirt on the surface of the carpet by the brushing.

  In the cleaning liquid according to the present invention using titanium oxide as a photocatalyst, the synergistic effect of adding a peroxide capable of decomposing an organic compound and metasilicic acid (alkali component) is particularly effective for cleaning and erasing fibers. Odor (deodorization) is possible at the same time, and antibacterial / antifungal / antifouling / bleaching effects can be obtained.

  In addition, by not using a surfactant, when the carpet is sprayed and brushed and washed, there is no foaming and wiping can be easily performed, thus improving work efficiency. Furthermore, it is not necessary to remove the surfactant and the like with a large amount of water after washing the carpet, so that the drying time can be shortened and the waste water treatment is also unnecessary. Moreover, since all the components contained in the cleaning liquid of the present invention are safe components, they are harmless to the human body and the environment.

  In the present invention, the apatite coating the surface of titanium oxide adsorbs almost all harmful substances such as viruses, fungi, molds, dirt, odor components, etc., and these harmful substances are decomposed by titanium oxide, It is detoxified as carbon dioxide and water. The effect of such apatite-coated titanium oxide is maintained semipermanently.

  In the present invention, since the surface of titanium oxide as a photocatalyst is coated with the added apatite, this apatite serves as a spacer interposed between the surface of the titanium oxide and the carpet material, and the carpet. By preventing this material from coming into contact with the surface of titanium oxide, carpet materials (especially natural materials such as wool) are not damaged by the decomposition action of titanium oxide.

  The cleaning liquid according to the present invention can be used for various purposes other than carpet cleaning, and can also be used for a chair cover, water deodorization and antibacterial. Moreover, it is also possible to use it diluted (2-5 times etc.) according to the intended purpose.

It is explanatory drawing which shows the function of the washing | cleaning liquid which concerns on this invention. It is a flowchart which shows an example of the cleaning method of the carpet using the cleaning liquid which concerns on this invention.

  Hereinafter, the present invention will be specifically described. In addition, this invention is not limited to the thing of the Example demonstrated below.

  As described above, the conventional cleaning agent using a photocatalyst (titanium oxide) has the disadvantages that it is not immediately effective and is hardly effective. However, in the present invention, active oxygen is added by adding a peroxide. To improve the degradation performance of pollutants, add alkali component metasilicic acid as a cleaning accelerator, peel off and disperse dirt, combined with photocatalytic titanium oxide and other components, synergistic effect, It has been able to significantly improve the cleaning effect such as decomposition, sterilization, and deodorization of dirt, and it has excellent cleaning power, deodorizing power, etc., and it can be a cleaning liquid that combines immediate effect and sustainability. .

  The composition of the cleaning liquid according to the present invention consists of [98.00 ± 9.80]% (percentages are compounding ratio, the same applies in this specification) and a small amount of [0.70 each added to this water. ± 0.07]% apatite-coated titanium oxide, [0.20 ± 0.02]% peroxide, [0.10 ± 0.01]% citric acid, and [1.00 ± 0 .10]% metasilicic acid.

  The titanium oxide is a photocatalyst, and has an action of detoxifying an organic substance (dirt, fungus, mold, odor component, etc.) into carbon dioxide gas and water by an oxidizing power under light. The optimum content of titanium oxide is 0.60% with respect to [98.00 ± 9.80]%, and the allowable range is 10%, that is, ± 0.06%. The content of titanium oxide is set in the range of 0.54 to 0.66% with respect to [98.00 ± 9.80]% of water. When the content of titanium oxide is less than 0.54%, the decomposing power of the cleaning liquid is reduced and the immediate effect is poor. On the other hand, when the content exceeds 0.66%, although depending on the blending ratio with apatite, there arises a problem that, for example, the carpet material itself (wool etc.) is damaged due to its decomposition power.

  The apatite has an action of adsorbing and collecting organic matter, etc., and adheres the surface of the titanium oxide so that the apatite covers it, and decomposes the dirt etc. adsorbed and collected by the apatite by the photocatalytic titanium oxide. , Decomposition efficiency can be improved. In addition, the apatite coats the surface of the photocatalytic titanium oxide and acts as a spacer to prevent the carpet material from coming into contact with the surface of the titanium oxide, so that the carpet material is damaged by the decomposition action of the titanium oxide. It has the function to prevent.

  The content of apatite is optimally 0.10% with respect to [98.00 ± 9.80]% water, and the allowable range is 10%, that is, ± 0.01%. In the invention, the content of apatite is set in the range of 0.09 to 0.11%.

  If the apatite content is less than 0.09%, the adsorptive power of dirt and the like is insufficient, the decomposition efficiency by the photocatalytic titanium oxide is lowered, the function as the spacer is insufficient, and the carpet material may be damaged. Increase. On the other hand, if the content of apatite exceeds 0.11%, the entire surface of the photocatalytic titanium oxide is covered with apatite, the decomposition power of dirt and the like due to the photocatalytic titanium oxide is reduced, and the immediate effect becomes poor.

  Apatite-coated titanium oxide as a photocatalyst coated with such apatite is powdery.

  The peroxide generates active oxygen and promotes decomposition of dirt and odor components. It also has oxidation and bleaching action due to the generated active oxygen. As a specific example of the peroxide, a percarbonate or the like can be suitably used.

  The peroxide content is optimally 0.20% with respect to [98.00 ± 9.80]% water, and the allowable range is 10%, that is, ± 0.02%. In the present invention, the peroxide content is set in the range of 0.18 to 0.22%. If the peroxide content is less than 0.18% with respect to [98.00 ± 9.80]% of water, the amount of active oxygen generated is small and the effect of promoting the decomposition of dirt and the like becomes poor. On the other hand, if the peroxide content exceeds 0.22%, the bleaching action or the like becomes excessive, and the possibility of damaging the carpet material increases.

  The citric acid has an action of decomposing calcium, magnesium and the like, and has a function of softening water. This prevents the action of other contents such as apatite, peroxide, metasilicic acid and the like from being inhibited by calcium, magnesium and the like.

  The content of citric acid is optimally 0.10% with respect to [98.00 ± 9.80]% water, and the allowable range is 10%, ie, ± 0.01%. In the present invention, the citric acid content is set in the range of 0.09 to 0.11%.

  When the citric acid content is less than 0.09% with respect to [98.00 ± 9.80]% of water, no effect to be obtained is obtained. The action of the component metasilicic acid is impaired.

  The sodium metasilicate is an alkaline component, and removes and disperses dirt from the carpet, promotes the decomposition action by the photocatalytic titanium oxide, and improves the cleaning effect. As a specific example of metasilicic acid, a sodium metasilicate solution etc. can be used conveniently.

  The content of metasilicic acid is optimally 1.00% with respect to [98.00 ± 9.80]% water, and its allowable range is 10%, that is, ± 0.10%. In the present invention, the content of metasilicic acid is set in the range of 0.90 to 1.10%.

  When the content of metasilicic acid is less than 0.90% with respect to [98.00 ± 9.80]% of water, no effect to be obtained is obtained. On the other hand, when the content exceeds 1.10%, The action of citric acid is impaired.

  The sodium metasilicate aqueous solution of the sodium metasilicate aqueous solution is preferably a water glass-like aqueous solution, but it is easy to dissolve in water, so it may remain solid.

  In the production of the cleaning liquid according to the present invention containing each component as described above, water with low impurities such as well water and spring water is prepared in a container, and this water, apatite-coated titanium oxide, and peroxide are prepared. In addition, citric acid and sodium metasilicate are mixed and stirred at the above-described mixing ratio. Alternatively, each apatite-coated titanium oxide, peroxide, citric acid, and sodium metasilicate may be added to water after being mixed and stirred in advance. In the production of the cleaning liquid, it may be prepared by mixing and stirring before using the cleaning liquid, or may be mixed and stirred on site.

  More specifically, when preparing 1,000 cc of cleaning liquid, prepare 980 cc of water with a small amount of impurities in a container and add 7 cc of an amount equivalent to, for example, powdered apatite-coated titanium oxide and 2 cc of equivalent of, for example, Powdered percarbonate, powdered citric acid equivalent to 10 cc, and sodium metasilicate solution equivalent to 1 cc are added and mixed with stirring. The necessary amount of powdery raw material can be prepared by putting it in a lightweight container such as a beaker or a glass test tube.

  The color of the cleaning liquid of the present invention produced in this way is light white and translucent, the liquidity is pH 11.5 ± 1, and each component contained is safe for medical use. It is gentle and harmless, and biodegraded in 2 to 3 weeks, so it does not cause environmental pollution.

  FIG. 1 schematically shows the function of the cleaning liquid according to the present invention. When the cleaning liquid according to the present invention containing each of the above components adheres to and impregnates, for example, a carpet by spraying or the like, and is left for a few minutes, as shown in FIG. 1 (a), as the alkaline component contained in the cleaning liquid, Due to the action of metasilicic acid, the dirt 2 and the like adhering to the carpet 1 is peeled off from the carpet 1 to become a dirt piece 2a. The dirt pieces 2a are further dispersed by the action of the metasilicic acid and the peroxide, and are also dispersed by a stirring action by brushing cleaning described later, so that fine dirt particles 2b as shown in FIG. 2b. These dirt particles 2b and 2b (including viruses, fungi, molds, odor components and the like) are formed from apatite particles 4 covering the surface of the photocatalytic titanium oxide particles 3 contained in the cleaning liquid, as shown in FIG. 4 is adsorbed by the photocatalyst, decomposed by the oxidizing action of the photocatalytic titanium oxide particles 3 and rendered harmless. The apatite particles 4 and 4 covering the surface of the photocatalytic titanium oxide particles 3 also serve as spacers for preventing the material of the carpet 1 from coming into contact with the photocatalytic titanium oxide particles 3 and being damaged.

  Hereinafter, a conventional general carpet cleaning liquid mainly composed of a surfactant (referred to as “general cleaning liquid”) and a cleaning liquid according to the present invention having the above-described component structure (referred to as “the present cleaning liquid”). ) Is used to compare the performance of carpets.

  Regarding the cleaning effect of dirt and stains, general cleaning liquids cannot decompose organic compounds that are components of dirt and spots, and therefore stains are often not removed. Decomposes organic compounds in stains and removes stains. Further, in general cleaning liquids, the carpet may be discolored and decolored by the action of surfactants and detergent components. However, since the cleaning liquid of the present invention does not decompose other than organic compounds, no discoloration or decoloration occurs.

  As for deodorizing and antibacterial effects, general cleaning solutions cannot decompose organic compounds that are odorous components or decompose and kill viruses, fungi, molds, etc. When using the cleaning solution of the present invention, these organic compounds are decomposed by the decomposition action of peroxide and metasilicic acid and the oxidation action of titanium oxide, so that a deodorizing and antibacterial effect can be obtained.

  With regard to the possibility of dirt re-adhering to the carpet after washing and re-contamination, in the case of general cleaning liquids, dirt once moved to the washing machine side is re-applied to the surfactant remaining on the carpet. In the case of the cleaning liquid of the present invention, dirt and the like are decomposed into carbon dioxide gas and water, so there is no fear of recontamination.

  With regard to the drying speed after washing, in the case of a general cleaning liquid, a large amount of water is required to remove the surfactant and detergent components, and it takes time to dry the water that has penetrated the carpet. In the case of the cleaning liquid of the present invention, since a surfactant is not used, a large amount of water for removing it is unnecessary, and the time required for drying can be greatly shortened.

  After the carpet cleaning operation is completed, the use stop period until the carpet can be used is 1 to 2 days for drying and 1 to 2 days for deodorization in the case of a general cleaning liquid, but it takes 2 to 4 days in total. In the case of the cleaning liquid of the present invention, since it takes only 2 to 3 hours for drying and no deodorization is required, the carpet after cleaning can be used in a total of 2 to 3 hours.

  For wastewater treatment, in the case of a general cleaning solution, it is necessary to treat the water (waste solution) used to remove the surfactant after carpet cleaning, whereas the cleaning solution of the present invention uses a surfactant. In addition, since the content of the cleaning liquid of the present invention is biodegraded in 2 to 3 weeks, waste water treatment is unnecessary and work is easy.

  Regarding the harmfulness, the general cleaning liquid contains many surfactants and other detergent components, so there is an adverse effect on the environment. However, the cleaning liquid of the present invention does not contain those harmful components and is used in the medical field. It is harmless because it is only a safe component as it is, and there is no adverse effect on the environment.

  Next, a cleaning method using the cleaning liquid according to the present invention for carpet cleaning will be described with reference to FIG.

  First, as shown in FIG. 2A, dust attached to the carpet 11 to be cleaned is removed using a vacuum cleaner 12.

  Next, as shown in FIG. 2 (b), using a nebulizer 13 or the like, a stock solution of the cleaning liquid having the above-described component structure according to the present invention or a diluted liquid diluted with water as needed is applied to the surface of the carpet 11. Spray and leave for 4-12 minutes. In this case, the amount of spraying should be such that it feels slightly moist when touched by the hand. The standing time is increased or decreased according to the type and degree of dirt, temperature, humidity, and the like. For example, if there are stains, molds, etc., a large amount of the cleaning solution is sprayed on the portions and left for about 10 minutes. This makes it possible to remove and disperse dirt, odor components, etc. adhering to or permeating the carpet from the carpet fiber.

  Next, as shown in FIG. 2 (c), the surface of the carpet 11 is brushed by a brush-washing machine 14. As the washing machine 14, a rotary champer for carpet or the like is used, and as the brush 15 attached to the washing machine 14, a trone brush or a fern brush can be suitably used. However, the washing machine and the brush are not limited to these. By this brushing operation, simultaneously with drying of the water of the cleaning liquid, the peeled and dispersed dirt, odor components and the like are adsorbed on the apatite particles covering the surface of the photocatalytic titanium oxide particles in the cleaning liquid, and the photocatalytic titanium oxide particles While being decomposed and detoxified by the oxidizing action, other dirt can be lifted on the carpet surface.

  Finally, as shown in FIG. 2 (d), the dirt floating on the surface of the carpet by the brushing is adsorbed by a washing machine 16 equipped with a yarn pad or bone net pad 17 formed by sewing cotton yarn on a circular fabric. Remove. As the washing machine 16, as in the case of brushing, a rotary champer for carpet or the like can be used.

  For example, when cleaning only a part with stains, molds, etc., as described above, spray a large amount of the cleaning solution on the part, leave it for about 10 minutes, brush it, and wipe it off with a towel. Good.

  In addition, this invention is not limited to the said Example, Other components can be supplementarily added as needed, and operations other than the above can also be supplementarily added during a cleaning operation. Therefore, the present invention encompasses all modified embodiments within the scope of the claims.

  Since the present invention is configured as described above, excellent detergency is exhibited by the synergistic effect of photocatalytic titanium oxide, peroxide and metasilicic acid, effectively removing dirt and spots, deodorizing, antibacterial In addition, when it is used for carpet cleaning, it has a short period of stoppage until it can be used after cleaning, creating a safe and comfortable indoor space that is friendly to people and the global environment. It is possible to provide a cleaning liquid that can be used and a method for cleaning a carpet using the cleaning liquid.

DESCRIPTION OF SYMBOLS 1 Carpet 2 Dirt 2a Dirt piece 2b Dirt particle 3 Photocatalytic titanium oxide particle 4 Apatite particle 11 Carpet 12 Vacuum cleaner 13 Sprayer 14 Washing machine 15 Brush 16 Washing machine 17 Yarn pad or bone net pad

Claims (7)

  A cleaning liquid characterized by comprising water with a small amount of impurities and a small amount of apatite-coated titanium oxide, peroxide, citric acid, and sodium metasilicate added to the water.   The cleaning liquid according to claim 1, wherein the cleaning liquid is for carpet cleaning. The cleaning liquid contains [98.00 ± 9.80]% water with few impurities, [0.70 ± 0.07]% (a percentage is a compounding ratio, the same applies hereinafter) and [0. 20 ± 0.02]% peroxide, [0.10 ± 0.01]% citric acid, and [1.00 ± 0.10]% sodium metasilicate, The cleaning liquid according to claim 1.   The apatite-coated titanium oxide is composed of [0.60 ± 0.06]% titanium oxide and [0.10 ± 0.01]% apatite with respect to the water. The cleaning liquid described in 1.   The cleaning liquid according to claim 1, wherein the sodium metasilicate is a water glass-like aqueous solution.   The cleaning liquid according to claim 1, wherein the cleaning liquid has a pH of 11.5 ± 1. Removing dust adhering to the carpet with a vacuum cleaner;
Spray the surface of the carpet with the undiluted solution of the cleaning liquid according to any one of claims 1 to 4 or a diluted solution diluted with water as necessary, and then leave it for 4 to 12 minutes to remove dirt, odor components, etc. from the carpet fiber. The step of dispersing,
The surface of the carpet is brushed by a washing machine with a brush, and simultaneously with drying of the water of the cleaning liquid, the peeled and dispersed dirt, odor components, etc. are applied to the apatite particles covering the surface of the photocatalytic titanium oxide particles in the cleaning liquid. Adsorbing, decomposing and detoxifying by the oxidizing action of the photocatalytic titanium oxide particles, and raising other dirt to the surface of the carpet;
Adsorbing and removing dirt floating on the surface of the carpet by the brushing by a washing machine attached with a yarn pad or bone net pad;
A method for cleaning a carpet, comprising:

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