Multifunctional glass pumice cat litter companion and preparation method thereof

Abstract

The application discloses a multifunctional glass pumice cat litter companion and a preparation method thereof, and belongs to the technical field of pet products. The cat litter companion takes glass pumice as a core carrier and comprises, in percentage by mass, 80-85% of glass pumice, 4-8% of a bacterium-removing agent, 4-6% of a fragrance agent, 2-4% of a binder, 0.5-2% of a dispersing agent, 0.5-2% of a surface modifier and 1-2% of natural plant fibers. Through synergistic optimization of product components and a preparation process, the application realizes a trinity function of adsorption deodorization, long-acting bacterium removal and slow-release fragrance, and the product is safe, non-toxic and non-irritating, is suitable for all kinds of cat litters, the preparation process is simple and controllable, and the product can be produced on a large scale. Meanwhile, the application realizes high-value utilization of waste glass solid waste.

Description

Technical Field

[0001] This invention belongs to the field of pet product technology, specifically relating to a multifunctional glass pumice cat litter companion and its preparation method. Background Technology

[0002] With the continuous increase in pet ownership rates in China, cat litter, as a core product for daily cat care, has attracted much attention regarding its performance and safety. Currently, mainstream products such as bentonite cat litter, tofu cat litter, and mixed mineral litter generally suffer from limited odor control, easy bacterial growth, odor diffusion during use, and tendency to stick to the bottom and turn into powder. Cat litter companion products, as complementary products to enhance the cat litter user experience, have become an important category in the pet supplies market.

[0003] Existing cat litter companion products are mainly divided into three categories: The first category is the simple physical adsorption type, which uses zeolite powder and activated carbon as the main raw materials. It can only adsorb odors through physical action, and has the defects of rapid adsorption saturation, easy odor rebound, and no sterilization and fragrance enhancement functions, and cannot solve the odor problem at the root. The second category is the chemical deodorizing type, which adds synthetic fragrances and chemical deodorizers. Although it can quickly mask odors, the chemical components can easily irritate the cat's sensitive respiratory tract and skin. If the cat accidentally ingests it, there is a health risk. Moreover, the fragrance release is uncontrollable, and the fragrance is prone to being too strong at the beginning and then dissipating quickly. The third category is the multifunctional type, which attempts to combine adsorption, sterilization and fragrance functions. However, it mostly uses ordinary quartz sand and ceramic particles as carriers, which have the problems of small specific surface area, simple pore structure and weak adsorption capacity. Moreover, the functional ingredients mostly use organic sterilizers and synthetic fragrances, which are not safe enough. At the same time, the functional ingredients are easy to fall off, have poor compatibility with various types of cat litter, and are easy to pulverize during use.

[0004] Glass pumice is a porous, lightweight inorganic material made primarily from waste glass through high-temperature foaming. It boasts advantages such as rich pore structure, large specific surface area, excellent adsorption performance, stable chemical properties, non-toxicity, odorlessness, and good mechanical strength. It also enables the high-value utilization of urban waste glass, promoting environmental protection and low carbon emissions. Currently, glass pumice is mainly used in building insulation, water treatment, and landscaping. There are no reports on its use as a core carrier in cat litter box additives, nor on its application in cat litter box additives. These reports describe technologies that utilize its gradient pore structure design to create cat litter box additives with combined safe antibacterial, slow-release fragrance, and anti-sticking / dust-reducing functions. Furthermore, these technologies fail to address the core technical pain points of existing cat litter box additives, such as short-lasting deodorization, poor antibacterial effect, insufficient safety, and limited functionality. Summary of the Invention

[0005] The purpose of this invention is to overcome the problems of the prior art and provide a multifunctional glass pumice cat litter companion and its preparation method. It uses gradient porous glass pumice made from waste glass as the core carrier, combined with antibacterial agents, fragrances and auxiliary materials to achieve the synergistic effect of adsorption and deodorization, long-lasting sterilization and slow-release fragrance. At the same time, it ensures that the product is safe, non-toxic and non-irritating, and compatible with all types of cat litter. The preparation process is simple, controllable and can be scaled up.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: A multifunctional glass pumice cat litter companion is characterized by comprising the following components by mass percentage: 80%-85% glass pumice, 4%-8% antibacterial agent, 4%-6% fragrance agent, 2%-4% binder, 0.5%-2% dispersant, 0.5%-2% surface modifier, and 1%-2% natural plant fiber, with the total mass percentage of each component being 100%.

[0007] A further improvement of the present invention is that the glass pumice has a particle size of 0.5-5 mm, a total porosity of ≥70%, an open porosity of 65%-75%, and a pore size distribution of 1 nm-500 μm.

[0008] A further improvement of the present invention is that the pore size D50 of the glass pumice is 29.1 μm.

[0009] A further improvement of the present invention is that the disinfectant is composed of silver-loaded nano-zinc oxide and natural pomegranate peel powder, wherein the mass ratio of silver-loaded nano-zinc oxide to natural pomegranate peel powder is (2-3):1.

[0010] A further improvement of the present invention is that the fragrance agent is a natural plant essential oil microcapsule with a particle size of 1-5 μm, the wall material is biodegradable chitosan, and the core material is a natural plant essential oil.

[0011] A further improvement of the present invention is that the natural plant essential oil used in the fragrance is one or more of lemon essential oil, lavender essential oil, and osmanthus essential oil, with an essential oil purity of ≥99%.

[0012] A further improvement of the present invention is that the binder is sodium carboxymethyl cellulose, the dispersant is polyethylene glycol 400, the surface modifier is silane coupling agent KH-550, and the natural plant fiber is bamboo fiber with a length of 1-3 mm.

[0013] This invention also provides a method for preparing the above-mentioned multifunctional glass pumice cat litter companion, characterized by comprising the following steps: S1. Carrier pretreatment: The glass pumice is subjected to edge passivation, surface modification and pore activation treatment in sequence to obtain modified glass pumice carrier; S2. Functional component loading: Prepare a functional loading solution according to the formula, put the modified glass pumice carrier into the functional loading solution, impregnate it with ultrasound, add natural plant fiber and stir evenly, and then centrifuge to remove liquid to obtain glass pumice particles loaded with functional components. S3. Molding and curing: The glass pumice particles loaded with functional components are processed by a segmented drying and curing process to obtain a cured semi-finished product; S4. Post-processing and finished product: After the cured semi-finished product undergoes secondary screening, dust removal, and full-item testing, it is sealed and packaged to obtain the multifunctional glass lightweight stone cat litter companion finished product.

[0014] A further improvement of the present invention is that the edge passivation treatment in step S1 is as follows: glass pumice is put into a drum polisher, ceramic abrasive media is added, and polishing is performed for 15-30 minutes to remove sharp edges and corners, so that the edge passivation rate is ≥99%. After polishing, dust is removed by air separation. The surface modification treatment in step S1 is as follows: the glass pumice with passivated edges and corners is put into a modification kettle, silane coupling agent KH-550 and deionized water are added, the temperature is controlled at 60-70℃, and stirring is performed for 30 minutes to make the modifier evenly cover the surface of the glass pumice and the inner wall of the pores. After completion, it is dried at 120℃ for 2 hours. The pore activation treatment in step S1 is as follows: the surface-modified glass pumice is put into an ultrasonic cleaner and ultrasonically cleaned with deionized water for 15 minutes to activate the pore channels and remove residual impurities. After completion, it is dried at 105℃ for 1 hour.

[0015] A further improvement of the present invention is that the specific steps for loading the functional components in step S2 are as follows: According to the formula ratio, the antibacterial agent, fragrance agent, and dispersant are added to deionized water and stirred evenly to form a functional dispersion; then a binder is added, the temperature is raised to 50-60℃, and the mixture is stirred for 20 minutes until the binder is completely dissolved, resulting in a functional loading solution with a solid content of 20%-30%; then the modified glass pumice carrier is added to the functional loading solution, the liquid-to-solid ratio is controlled at 2:1, and ultrasonic impregnation is performed at a temperature of 40-50℃ for 30-40 minutes to allow the functional loading solution to fully penetrate into the pores of the glass pumice; then natural plant fibers are added and stirred for 10 minutes to ensure the fibers are evenly dispersed on the carrier surface; finally, the impregnated and stirred glass pumice is removed, placed in a centrifuge, and centrifuged to remove excess functional loading solution from the surface, yielding glass pumice particles loaded with functional components.

[0016] A further improvement of the present invention is that the segmented drying and curing process in step S3 specifically includes the following steps: ① pre-drying at 80℃ for 1 hour to remove free moisture from the surface; ② curing at 120℃ for 2 hours to completely cure the adhesive and firmly fix the functional components in the pores and surface of the glass pumice; ③ stabilizing at 150℃ for 1 hour to improve the mechanical strength and functional stability of the product; the ambient humidity is controlled to be ≤50% during the curing process to obtain a cured semi-finished product.

[0017] A further improvement of the present invention is that the post-processing and finished product steps in step S4 are as follows: the solidified semi-finished product is screened twice by a vibrating screen to remove lumps and broken particles, ensuring uniform particle size and a screening pass rate of ≥98%; then it is treated by an air classifier to remove dust, so that the dust generation rate of the product is ≤0.3%; the product is subjected to full performance testing, and after all indicators are qualified, it is sealed and moisture-proof packaged in a PE bag to obtain the multifunctional glass lightweight stone cat litter companion finished product.

[0018] Compared with the prior art, the present invention has the following significant advantages: 1. This invention uses glass pumice with a gradient pore structure as a carrier. The macropores can quickly drain urine, preventing water from accumulating on the surface of the cat litter and sticking to the bottom of the litter box. The mesopores and micropores can directionally adsorb odor molecules and achieve long-term locking, solving the problems of rapid adsorption saturation and easy odor rebound of traditional carriers. At the same time, the rich pore structure provides sufficient loading space for antibacterial agents and fragrances, realizing uniform loading and slow release of functional components.

[0019] 2. This invention uses a sterilization system composed of silver-loaded nano zinc oxide powder and natural pomegranate peel powder. It combines the broad-spectrum and long-lasting effect of inorganic sterilizers with the biocompatibility of natural plant ingredients. It does not have the irritation and drug resistance of organic bactericides. It can effectively kill harmful bacteria in cat feces and inhibit the secondary generation of odor from the source.

[0020] 3. This invention uses natural plant essential oil microcapsules as fragrance agents, combined with the porous loading structure of glass pumice. The microcapsules are broken and the fragrance is released slowly and for a long time through cats stepping on them and soaking in urine. This achieves a gentle masking of odors and avoids the irritation and rapid dissipation of synthetic fragrances. It is non-irritating to cats' sensitive sense of smell and is suitable for enclosed cat-keeping environments.

[0021] 4. By adding bamboo fiber, this invention can enhance the product's clumping ability, reduce cat litter sticking to the bottom, improve the product's mechanical strength, prevent cats from stepping on and pulverizing it, and further improve the urine flow rate. It also forms a synergistic effect with the gradient pore structure of the glass pumice, further optimizing the anti-sticking and dust reduction effects.

[0022] 5. The preparation process of this invention uses conventional general-purpose equipment without special customization. It achieves precise control of gradient pore structure through segmented temperature-controlled sintering, and achieves uniform and firm loading of functional components through ultrasonic impregnation and segmented curing. The process parameters are stable and controllable, enabling continuous and large-scale production. At the same time, it uses waste glass as the main raw material, realizing the high-value utilization of urban solid waste, and the production process has no toxic or harmful emissions.

[0023] 6. This invention produces a dust-free product with no sharp edges, which will not scratch a cat's paw pads or irritate its respiratory tract. It is compatible with all types of cat litter, including bentonite, tofu litter, and mixed mineral litter, without affecting the clumping properties of the original cat litter. It can be used in various ways, such as mixing, laying on the bottom, or covering the surface. It solves the core pain points of traditional cat litter, such as being easy to stick to the bottom, easy to turn into powder, and having poor odor control, and has extremely strong market application value. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the finished cat litter companion product of the present invention. Detailed Implementation

[0025] The technical solution of the present invention will be further described in detail below through specific embodiments and with reference to the accompanying drawings: The raw materials used in the embodiments of this invention are all commercially available industrial-grade products, which meet the safety requirements for pet contact products, and the produced products have the following appearance. Figure 1 As shown. Example 1

[0026] A multi-functional glass pumice cat litter companion, comprising the following components by weight percentage: The composition includes: 82% glass pumice, 8% antibacterial agent, 4% fragrance, 2% binder, 2% dispersant, 0.5% surface modifier, and 1.5% natural plant fiber. The glass pumice has a size of 1-3mm, a total porosity of 72%, an open porosity of 70%, and a pore size D50 of 29.1μm. The antibacterial agent is a mixture of silver-loaded nano zinc oxide and natural pomegranate peel powder in a mass ratio of 2:1. The fragrance is lavender essential oil microcapsules. The binder is sodium carboxymethyl cellulose, the dispersant is polyethylene glycol 400, the surface modifier is silane coupling agent KH-550, and the natural plant fiber is bamboo fiber.

[0027] Its preparation method includes the following steps: S1. Carrier Pretreatment: Glass pumice is placed in a drum polisher, ceramic abrasive media is added, and polishing is performed for 20 minutes to remove sharp edges and corners, achieving an edge passivation rate of 99.5%. After polishing, dust is removed by air separation. Then, the edge-passivated glass pumice is placed in a modification kettle, silane coupling agent KH-550 and deionized water are added, the temperature is controlled at 60℃, and stirring is performed for 30 minutes to ensure that the modifier is evenly coated on the surface and pore walls of the glass pumice. After completion, it is dried at 120℃ for 2 hours. Then, the surface-modified glass pumice is placed in an ultrasonic cleaner and ultrasonically cleaned with deionized water for 15 minutes to activate the pore channels and remove residual impurities. After completion, it is dried at 105℃ for 1 hour to obtain the modified glass pumice carrier.

[0028] S2. Functional Ingredient Loading: According to the formula ratio, add the antibacterial agent, fragrance agent, and dispersant to deionized water and stir evenly to form a functional dispersion; then add the binder, heat to 50℃, and stir for 20 minutes until the binder is completely dissolved to obtain a functional loading solution with a solid content of 20%; then add the modified glass pumice carrier to the functional loading solution, control the liquid-to-solid ratio at 2:1, and use ultrasonic impregnation at 50℃ for 30 minutes to allow the functional loading solution to fully penetrate into the pores of the glass pumice; then add natural plant fibers and stir for 10 minutes to evenly disperse the fibers on the carrier surface; then remove the impregnated and stirred glass pumice and place it in a centrifuge to remove excess functional loading solution from the surface, obtaining glass pumice particles loaded with functional ingredients. S3. Molding and Curing: The glass pumice particles loaded with functional components are evenly spread on the drying conveyor belt and processed using a segmented drying and curing process: ① Pre-drying at 80℃ for 1 hour to remove surface free moisture; ② Curing at 120℃ for 2 hours to completely cure the binder and firmly fix the functional components in the pores and surface of the glass pumice; ③ High-temperature stabilization at 150℃ for 1 hour to improve the mechanical strength and functional stability of the product; the ambient humidity is controlled at 45% during the curing process to obtain a cured semi-finished product. S4. Post-processing and finished product: The solidified semi-finished product is screened twice by a vibrating screen to remove lumps and broken particles to ensure uniform particle size. Then, it is treated by an air classifier to remove dust. The product undergoes full performance testing. After all indicators are qualified, it is sealed and moisture-proof packaged in PE bags to obtain the multifunctional glass lightweight stone cat litter companion finished product. Example 2

[0029] A multi-functional glass pumice cat litter companion, comprising the following components by weight percentage: 85% glass pumice, 4% antibacterial agent, 5% fragrance, 3% binder, 1% dispersant, 1% surface modifier, and 1% natural plant fiber; The glass pumice has a diameter of 3-5mm, a total porosity of 70%, an open porosity of 65%, and a pore size of D50=29.1μm; the antibacterial agent is a mixture of silver-loaded nano zinc oxide and natural pomegranate peel powder in a mass ratio of 3:1; the fragrance is lemon essential oil microcapsules; the binder is sodium carboxymethyl cellulose; the dispersant is polyethylene glycol 400; the surface modifier is silane coupling agent KH-550; and the natural plant fiber is bamboo fiber.

[0030] Its preparation method includes the following steps: S1. Carrier Pretreatment: Glass pumice is placed in a drum polisher, ceramic abrasive media is added, and polishing is performed for 30 minutes to remove sharp edges and corners, achieving an edge passivation rate of 99.9%. After polishing, dust is removed by air separation. Then, the edge-passivated glass pumice is placed in a modification kettle, silane coupling agent KH-550 and deionized water are added, and the temperature is controlled at 65℃. Stirring is performed for 30 minutes to ensure that the modifier is evenly coated on the surface and pore walls of the glass pumice. After completion, it is dried at 120℃ for 2 hours. Then, the surface-modified glass pumice is placed in an ultrasonic cleaner and ultrasonically cleaned with deionized water for 15 minutes to activate the pore channels and remove residual impurities. After completion, it is dried at 105℃ for 1 hour to obtain the modified glass pumice carrier.

[0031] S2. Functional Ingredient Loading: According to the formula ratio, add the antibacterial agent, fragrance agent, and dispersant to deionized water and stir evenly to form a functional dispersion; then add the binder, heat to 55℃, and stir for 20 minutes until the binder is completely dissolved to obtain a functional loading solution with a solid content of 25%; then add the modified glass pumice carrier to the functional loading solution, control the liquid-to-solid ratio at 2:1, and use ultrasonic impregnation at 45℃ for 35 minutes to allow the functional loading solution to fully penetrate into the pores of the glass pumice; then add natural plant fibers and stir for 10 minutes to evenly disperse the fibers on the carrier surface; then remove the impregnated and stirred glass pumice and place it in a centrifuge to remove excess functional loading solution from the surface, obtaining glass pumice particles loaded with functional ingredients. S3. Molding and Curing: The glass pumice particles loaded with functional components are evenly spread on the drying conveyor belt and processed using a segmented drying and curing process: ① Pre-drying at 80℃ for 1 hour to remove surface free moisture; ② Curing at 120℃ for 2 hours to completely cure the binder and firmly fix the functional components in the pores and surface of the glass pumice; ③ High-temperature stabilization at 150℃ for 1 hour to improve the mechanical strength and functional stability of the product; the ambient humidity is controlled at 40% during the curing process to obtain a cured semi-finished product. S4. Post-processing and finished product: The solidified semi-finished product is screened twice by a vibrating screen to remove lumps and broken particles to ensure uniform particle size. Then, it is treated by an air classifier to remove dust. The product undergoes full performance testing. After all indicators are qualified, it is sealed and moisture-proof packaged in PE bags to obtain the multifunctional glass lightweight stone cat litter companion finished product. Example 3

[0032] A multi-functional glass pumice cat litter companion, comprising the following components by weight percentage: The composition includes: 80% glass pumice, 5.5% antibacterial agent, 6% fragrance, 4% binder, 0.5% dispersant, 2% surface modifier, and 2% natural plant fiber. The glass pumice has a size of 0.5-1mm, a total porosity of 75%, an open porosity of 75%, and a pore size D50 of 29.1μm; the antibacterial agent is a mixture of silver-loaded nano zinc oxide and natural pomegranate peel powder in a mass ratio of 2.5:1; the fragrance is osmanthus essential oil microcapsules; the binder is sodium carboxymethyl cellulose; the dispersant is polyethylene glycol 400; the surface modifier is silane coupling agent KH-550; and the natural plant fiber is bamboo fiber.

[0033] Its preparation method includes the following steps: S1. Carrier Pretreatment: Glass pumice is placed in a drum polisher, ceramic abrasive media is added, and polishing is performed for 15 minutes to remove sharp edges and corners, achieving an edge passivation rate of 99.2%. After polishing, dust is removed by air separation. Then, the edge-passivated glass pumice is placed in a modification kettle, silane coupling agent KH-550 and deionized water are added, the temperature is controlled at 70℃, and stirring is performed for 30 minutes to ensure that the modifier is evenly coated on the surface and pore walls of the glass pumice. After completion, it is dried at 120℃ for 2 hours. Then, the surface-modified glass pumice is placed in an ultrasonic cleaner and ultrasonically cleaned with deionized water for 15 minutes to activate the pore channels and remove residual impurities. After completion, it is dried at 105℃ for 1 hour to obtain the modified glass pumice carrier.

[0034] S2. Functional Ingredient Loading: According to the formula ratio, the antibacterial agent, fragrance agent, and dispersant are added to deionized water and stirred evenly to form a functional dispersion. Then, a binder is added, the temperature is raised to 50℃, and the mixture is stirred for 20 minutes until the binder is completely dissolved, yielding a functional loading solution with a solid content of 30%. The modified glass pumice carrier is then added to the functional loading solution, controlling the liquid-to-solid ratio at 2:1. Ultrasonic impregnation is used at 40℃ for 40 minutes to allow the functional loading solution to fully penetrate the pores of the glass pumice. Natural plant fibers are then added and stirred for 10 minutes to ensure the fibers are evenly dispersed on the carrier surface. The impregnated and stirred glass pumice is then removed and placed in a centrifuge to remove excess functional loading solution from the surface, yielding glass pumice particles loaded with functional ingredients. S3. Molding and Curing: The glass pumice particles loaded with functional components are evenly spread on the drying conveyor belt and processed using a segmented drying and curing process: ① Pre-drying at 80℃ for 1 hour to remove surface free moisture; ② Curing at 120℃ for 2 hours to completely cure the binder and firmly fix the functional components in the pores and surface of the glass pumice; ③ High-temperature stabilization at 150℃ for 1 hour to improve the mechanical strength and functional stability of the product; the ambient humidity is controlled at 45% during the curing process to obtain a cured semi-finished product. S4. Post-processing and finished product: The solidified semi-finished product is screened twice by a vibrating screen to remove lumps and broken particles to ensure uniform particle size. Then, it is treated by an air classifier to remove dust. The product undergoes full performance testing. After all indicators are qualified, it is sealed and moisture-proof packaged in PE bags to obtain the multifunctional glass lightweight stone cat litter companion finished product. Comparative Example 1

[0035] This comparative example is a cat litter companion without compounded antibacterial agents. It only uses silver-loaded nano zinc oxide as an antibacterial agent and does not add natural pomegranate peel powder. The rest of the formula and preparation method are completely consistent with Example 1. Comparative Example 2

[0036] This comparative example is a common fragrance-based cat litter companion, which uses unencapsulated lavender essential oil instead of the natural plant essential oil microcapsules in Example 1. The rest of the formula and preparation method are completely consistent with Example 1. Comparative Example 3

[0037] This comparative example is a cat litter companion without added natural plant fibers. Bamboo fiber was removed from the formula, but the rest of the formula and preparation method are completely consistent with Example 1.

[0038] The products of Examples 1-3 and Comparative Examples 1-3 underwent comprehensive performance testing. All testing methods employed were standard methods commonly used in the field. The test results are shown in the table below: Testing items Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 24-hour ammonia adsorption rate (%) 93 92 94 92 91 92 24h hydrogen sulfide adsorption rate (%) 89 88 90 88 87 88 Escherichia coli eradication rate (%) 99.2 99.0 99.5 92.5 99.0 99.1 Sterilization rate (%) after 30 days 92 90 93 81 90 91 Fragrance release duration (days) 32 30 35 30 8 31 72h functional component shedding rate (%) 3.2 4.0 2.8 3.3 12.5 3.4 Dust generation rate (%) 0.25 0.28 0.22 0.25 0.27 0.32 The percentage decrease in cat litter sticking to the bottom. 92 95 90 91 90 82 The test results show that: The products of Examples 1-3 of this invention exhibit excellent performance in terms of odor adsorption, long-lasting sterilization, slow-release fragrance, stability of functional components, and anti-sticking and dust reduction. They achieve synergistic effects of adsorption, sterilization, and fragrance enhancement, meeting the expected design goals.

[0039] Comparative Example 1 used a single disinfectant, which significantly reduced the long-term effectiveness of its disinfection, demonstrating that the compound disinfection system of the present invention can significantly improve the durability of the disinfection effect.

[0040] Comparative Example 2 used unencapsulated ordinary essential oils, which significantly shortened the aroma release period and significantly increased the functional component loss rate, proving that the microcapsule sustained-release system of the present invention can effectively achieve long-term stable release of aroma.

[0041] Comparative Example 3, which did not contain any natural plant fibers, showed a significantly reduced dust generation rate and a much smaller reduction in cat litter sticking rate. This demonstrates that the natural plant fibers added in this invention can effectively optimize the product's anti-sticking and dust-reducing effects, and work synergistically with the glass pumice.

[0042] Meanwhile, safety performance tests were conducted on the products of Examples 1-3 of this invention. The results showed that the heavy metal content of the products met the requirements of GB / T34330-2017, the acute oral toxicity test showed that the products were practically non-toxic, had no skin irritation, and released no formaldehyde or VOCs, fully meeting the safety standards for pet contact products.

[0043] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A multifunctional glass pumice cat litter companion, characterized in that, By mass percentage, it consists of the following components: 80%-85% glass pumice, 4%-8% antibacterial agent, 4%-6% fragrance agent, 2%-4% binder, 0.5%-2% dispersant, 0.5%-2% surface modifier, and 1%-2% natural plant fiber, with the total mass percentage of each component being 100%.

2. The multifunctional glass pumice cat litter companion according to claim 1, characterized in that, The glass pumice has a particle size of 0.5-5mm, a total porosity of ≥70%, an open porosity of 65%-75%, and a pore size distribution of 1nm-500μm.

3. The multifunctional glass pumice cat litter companion according to claim 1, characterized in that, The disinfectant is composed of silver-loaded nano-zinc oxide and natural pomegranate peel powder, with a mass ratio of (2-3):

1.

4. The multifunctional glass pumice cat litter companion according to claim 1, characterized in that, The fragrance agent is a natural plant essential oil microcapsule with a particle size of 1-5 μm, a wall material of biodegradable chitosan, and a core material of natural plant essential oil.

5. The multifunctional glass pumice cat litter companion according to claim 4, characterized in that, The fragrance uses one or more of the following natural plant essential oils: lemon essential oil, lavender essential oil, and osmanthus essential oil, with an essential oil purity of ≥99%.

6. The multifunctional glass pumice cat litter companion according to claim 1, characterized in that, The binder is sodium carboxymethyl cellulose, the dispersant is polyethylene glycol 400, the surface modifier is silane coupling agent KH-550, and the natural plant fiber is bamboo fiber with a length of 1-3 mm.

7. A method for preparing the multifunctional glass pumice cat litter companion according to any one of claims 1-6, characterized in that, Includes the following steps: S1. Carrier pretreatment: The glass pumice is subjected to edge passivation, surface modification and pore activation treatment in sequence to obtain modified glass pumice carrier; S2. Functional component loading: Prepare a functional loading solution according to the formula, put the modified glass pumice carrier into the functional loading solution, impregnate it with ultrasound, add natural plant fiber and stir evenly, and then centrifuge to remove liquid to obtain glass pumice particles loaded with functional components. S3. Molding and curing: The glass pumice particles loaded with functional components are processed by a segmented drying and curing process to obtain a cured semi-finished product; S4. Post-processing and finished product: After the cured semi-finished product undergoes secondary screening, dust removal, and qualified testing, it is sealed and packaged to obtain the multifunctional glass lightweight stone cat litter companion finished product.

8. The preparation method of a multifunctional glass pumice cat litter companion according to claim 7, characterized in that, The edge passivation treatment in step S1 is as follows: put the glass pumice into a drum polisher and polish for 15-30 minutes to achieve an edge passivation rate of ≥99%. After polishing, remove the floating dust by air separation. The surface modification treatment in step S1 is as follows: put the edge-passivated glass pumice into a modification kettle, add silane coupling agent KH-550 and deionized water, control the temperature at 60-70℃, stir for 30 minutes, and then dry at 120℃ for 2 hours. The pore activation treatment in step S1 is as follows: put the surface-modified glass pumice into an ultrasonic cleaner and ultrasonically clean it with deionized water for 15 minutes. After cleaning, dry it at 105℃ for 1 hour.

9. The preparation method of a multifunctional glass pumice cat litter companion according to claim 7, characterized in that, The specific steps for loading the functional components in step S2 are as follows: According to the formula ratio, add the antibacterial agent, fragrance agent, and dispersant to deionized water and stir evenly to form a functional dispersion; then add the binder, heat to 50-60℃, and stir for 20 minutes until the binder is completely dissolved to obtain a functional loading solution with a solid content of 20%-30%; then add the modified glass pumice carrier to the functional loading solution, control the liquid-solid ratio to 2:1, and use the ultrasonic impregnation method at a temperature of 40-50℃ for 30-40 minutes; then add natural plant fiber and stir for 10 minutes; then take out the impregnated and stirred glass pumice, place it in a centrifuge, and centrifuge to remove excess functional loading solution from the surface to obtain glass pumice particles loaded with functional components.

10. The preparation method of a multifunctional glass pumice cat litter companion according to claim 7, characterized in that, The segmented drying and curing process in step S3 specifically includes the following steps: ① pre-drying at 80℃ for 1 hour; ② curing at 120℃ for 2 hours; ③ stabilizing at 150℃ for 1 hour.

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