Formula and preparation method of decoration material for effectively blocking livable space of PM0.5 nanotechnology

Abstract

The invention discloses a formula and a preparation method of a decoration material for effectively blocking a livable space of a PM0.5 nanotechnology, and belongs to the technical field of decoration materials. The composite material is prepared from the following components in percentage by mass: 30%-50% of a nanofiber base material, 10%-20% of nano titanium dioxide particles subjected to surface modification treatment, 5%-10% of tourmaline nano powder, 20%-30% of an environment-friendly water-based binder and 1%-3% of an auxiliary agent, through the unique nanofiber base material structure and the synergistic effect of multiple functional components, the barrier efficiency on PM0.5 reaches up to 95% or above, outdoor PM0.5 can be effectively prevented from entering a room, the indoor air quality is remarkably improved, the photocatalytic effect of nano titanium dioxide and negative ions released by tourmaline are improved, and the air purification effect is improved. The environment-friendly water-based air purifying agent can decompose harmful organic pollutants, inactivate bacteria and viruses and improve the air freshness, all-directional purification of indoor air is achieved, and an environment-friendly water-based binder and non-toxic and harmless nanometer material components are adopted.

Description

Technical Field

[0001] This invention relates to a formulation and preparation method of a livable space decoration material that effectively blocks PM0.5 using nanotechnology. The invention belongs to the technical field of decoration materials, specifically relating to the formulation and preparation method of decoration materials. Background Technology

[0002] With rapid industrialization and urbanization, air pollution has become increasingly serious, with fine particulate matter such as PM0.5 posing a significant threat to human health. These tiny particles can easily penetrate the respiratory system, entering the alveoli and further into the bloodstream, causing various serious health problems, including respiratory diseases, cardiovascular diseases, and even cancer. At the same time, people's demands for healthy and comfortable indoor living environments are constantly increasing, hoping to effectively improve indoor air quality through decoration and furnishing materials. Currently, most interior decoration materials on the market are significantly inadequate in blocking PM0.5. Traditional materials such as ordinary wallpaper, paint, and wood panels lack the structural integrity to effectively block such fine particles, allowing large amounts of outdoor PM0.5 to enter indoor spaces and severely impacting indoor air quality. Some materials claiming air purification functions often employ simple physical adsorption methods, which not only have limited adsorption capacity and are prone to saturation, but also exhibit extremely low PM0.5 filtration efficiency, failing to meet people's stringent requirements for indoor air quality. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a formula and preparation method of a livable space decoration material with effective PM0.5 blocking nanotechnology, so as to solve the problem that existing decoration materials cannot effectively block PM0.5, significantly improve indoor air quality, and create a healthy and livable indoor environment for people.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A livable space decoration material that effectively blocks PM0.5 using nanotechnology is composed of the following components by mass fraction: 30%-50% nanofiber matrix, 10%-20% surface-modified nano-titanium dioxide particles, 5%-10% tourmaline nanopowder, 20%-30% environmentally friendly water-based binder, and 1%-3% additives; the additives include dispersants and defoamers.

[0005] As a preferred embodiment of the present invention, the nanofiber matrix is ​​polyimide nanofiber or polyacrylonitrile nanofiber.

[0006] As a preferred embodiment of the present invention, the environmentally friendly waterborne adhesive is a waterborne polyurethane or acrylic emulsion.

[0007] A method for creating a livable space decoration material that effectively blocks PM0.5 nanotechnology includes the following steps: (1) Nanofiber pretreatment: The nanofibers are ultrasonically dispersed in an organic solvent for 30-60 minutes and then dried under vacuum conditions; (2) Surface modification of nano-titanium dioxide: Add nano-titanium dioxide particles to a solution containing silane coupling agent, stir and react at 60-80℃ for 2-3 hours, and then separate by centrifugation, washing and drying for later use; (3) Mixing and dispersing: According to the formula ratio, the pretreated nanofibers, modified nano titanium dioxide, tourmaline nano powder, binder and additives are added to the high-speed mixer in sequence and mixed at a speed of 1000-1500 rpm for 1-2 hours. (4) Grinding and refining: Transfer the mixed material to a ball mill, add grinding media, and grind for 3-5 hours; (5) Finished product preparation: The material after grinding and refining is the finished decoration material.

[0008] As a preferred embodiment of the present invention, the organic solvent in step (1) is acetone or N,N-dimethylformamide.

[0009] As a preferred embodiment of the present invention, the solution containing silane coupling agent in step (2) is an ethanol solution containing silane coupling agent.

[0010] As a preferred technical solution of the present invention, the grinding medium in step (4) is a zirconia ball.

[0011] As a preferred technical solution of the present invention, the surface-modified nano-titanium dioxide particles are prepared by the following method: adding nano-titanium dioxide particles to a solution containing a silane coupling agent, stirring and reacting at 60-80°C for 2-3 hours, followed by centrifugation, washing and drying.

[0012] As a preferred technical solution of the present invention, the vacuum degree of vacuum drying in step (1) is -0.08MPa to -0.09MPa.

[0013] As a preferred technical solution of the present invention, the decoration material can be made into paint, wallpaper coating paste or board veneer material.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the present invention, through its unique nanofiber matrix structure and the synergistic effect of multiple functional components, achieves a PM0.5 blocking efficiency of over 95%, effectively preventing outdoor PM0.5 from entering the room and significantly improving indoor air quality. The photocatalytic effect of nano-titanium dioxide and the negative ions released by tourmaline can decompose harmful organic pollutants, inactivate bacteria and viruses, and improve air freshness, achieving comprehensive purification of indoor air. It uses environmentally friendly water-based adhesives and non-toxic and harmless nanomaterials, and does not release harmful volatile organic compounds such as formaldehyde and benzene, meeting the requirements of green environmental protection and healthy living. The components in the material are tightly bonded together through chemical bonding and physical entanglement, exhibiting good stability and durability, and can maintain its PM0.5 blocking performance and air purification function for a long time. Detailed Implementation

[0015] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] The decorative materials of this invention are mainly composed of the following components: Nanofiber matrix: Nanofiber materials with high specific surface area and special pore structure, such as polyimide nanofibers and polyacrylonitrile nanofibers, are selected as the basic framework of the material, with a content of 30%-50% (mass fraction, the same below). These nanofibers can initially intercept and filter particulate matter in the air, and their special structure is conducive to the loading and synergistic effect of subsequent functional components. Nano-titanium dioxide photocatalytic particles: These particles, with a special surface modification treatment, comprise 10%-20% of the product. Under light irradiation, nano-titanium dioxide generates highly oxidizing free radicals, which can not only decompose harmful organic pollutants in the air but also inactivate bacteria and viruses attached to the material surface. Simultaneously, it helps decompose organic pollutants on the surface of intercepted PM0.5 particles, preventing their accumulation on the material surface. Tourmaline nanopowder: The content of tourmaline nanopowder is 5%-10%. Tourmaline has spontaneous polarization properties and can continuously release negative ions. On the one hand, negative ions can combine with positive ions in the air, promoting the aggregation of particulate matter such as PM0.5, increasing their particle size, and making them easier for materials to capture; on the other hand, negative ions can also improve the freshness of indoor air and enhance human comfort. Adhesive: Environmentally friendly water-based adhesives, such as water-based polyurethane and acrylic emulsions, are used, with a content of 20%-30%. The function of the adhesive is to firmly bind the above-mentioned functional components together to form a stable material structure, while ensuring that the material has good workability and can be easily applied to interior decoration parts such as walls and ceilings. Additives: including dispersants, defoamers, etc., with a total content of 1%-3%. Dispersants are used to ensure that various nanoscale components are uniformly dispersed in the material system, avoiding agglomeration, thereby giving full play to the functions of each component; defoamers are used to eliminate bubbles generated during the material preparation process, ensuring the appearance quality and performance stability of the material. Preparation method Nanofiber pretreatment: Selected nanofibers are ultrasonically dispersed in an organic solvent for 30-60 minutes to fully disperse them into single fibers, and then dried under vacuum to remove the organic solvent. Surface modification of nano-titanium dioxide: Nano-titanium dioxide particles are added to a solution containing a silane coupling agent and stirred at 60-80℃ for 2-3 hours to allow the silane coupling agent to chemically bond on the surface of the nano-titanium dioxide, thus achieving surface modification. The modified nano-titanium dioxide is then centrifuged, washed, and dried for later use. Mixing and dispersing: According to the formula ratio, add the pretreated nanofibers, modified nano titanium dioxide, tourmaline nanopowder, binder and additives to a high-speed mixer in sequence, and stir and mix at a speed of 1000-1500 rpm for 1-2 hours to ensure that all components are fully mixed and uniform. Grinding and refining: Transfer the mixed material to a ball mill, add an appropriate amount of grinding media, such as zirconia balls, and grind and refine it for 3-5 hours to further reduce the particle size and make the distribution more uniform, thereby improving the performance of the material. Finished product preparation: The material after grinding and refining is the finished decoration material. According to actual use needs, it can be made into different forms such as paint, wallpaper coating paste, and board veneer material.

[0017] Example 1: Preparation of Nanotechnology-Based Decorative Coatings for Livable Spaces Raw material preparation: 40g polyimide nanofibers, 15g surface-modified nano titanium dioxide, 8g tourmaline nanopowder, 30g waterborne polyurethane binder, 1g dispersant, and 1g defoamer. Nanofiber pretreatment: Polyimide nanofibers were added to acetone, ultrasonically dispersed for 45 minutes, and then dried for 2 hours under a vacuum of -0.08 MPa to remove acetone. Surface modification of nano-titanium dioxide: 15g of nano-titanium dioxide particles were added to an ethanol solution containing 3g of silane coupling agent and stirred at 70℃ for 2.5 hours. After the reaction was completed, the particles were centrifuged and washed three times with ethanol. Finally, the particles were dried at 80℃ for 12 hours. Mixing and dispersing: The pretreated polyimide nanofibers, modified nano titanium dioxide, tourmaline nanopowder, waterborne polyurethane binder, dispersant and defoamer are added to a high-speed mixer in sequence and mixed at 1200 rpm for 1.5 hours. Grinding and refining: Transfer the mixed material to a ball mill, add an appropriate amount of zirconia balls, and grind for 4 hours. Preparation of finished coating: The material after grinding and refining is the nanotechnology-based livable space decoration coating, which can be directly applied to the wall. Example 2: Preparation of Nanotechnology-Based Wallpaper Coating Slurry for Livable Space Decoration Raw material preparation: 35g polyacrylonitrile nanofibers, 12g surface-modified nano titanium dioxide, 6g tourmaline nanopowder, 38g acrylic emulsion binder, 1.5g dispersant, and 0.5g defoamer. Nanofiber pretreatment: Polyacrylonitrile nanofibers were added to N,N-dimethylformamide, ultrasonically dispersed for 50 minutes, and then dried for 3 hours under a vacuum of -0.09 MPa to remove the solvent.

[0018] Surface modification of nano-titanium dioxide: 12g of nano-titanium dioxide particles were added to an ethanol solution containing 2.5g of silane coupling agent and stirred at 65℃ for 2.2 hours. After the reaction was completed, the particles were centrifuged and washed three times with ethanol. Finally, the particles were dried at 75℃ for 10 hours. Mixing and dispersing: The pretreated polyacrylonitrile nanofibers, modified nano titanium dioxide, tourmaline nanopowder, acrylic emulsion binder, dispersant and defoamer were added to a high-speed mixer in sequence and mixed at 1300 rpm for 1.8 hours. Grinding and refining: Transfer the mixed material to a ball mill, add an appropriate amount of zirconia balls, and grind for 4.5 hours. Preparation of finished wallpaper coating paste: The material after grinding and refining is the nanotechnology-based wallpaper coating paste for comfortable living space decoration, which can be used for wallpaper coating processing. Performance testing PM0.5 Barrier Efficiency Test: A specialized air particulate matter filtration efficiency testing device was used. The prepared decorative material samples were installed in the device to simulate actual airflow. Air containing a certain concentration of PM0.5 was introduced, and the PM0.5 concentration at the inlet and outlet was measured to calculate the material's PM0.5 barrier efficiency. The tests showed that the coating prepared in Example 1 had a PM0.5 barrier efficiency of 96.2%, and the wallpaper coating paste prepared in Example 2 had a PM0.5 barrier efficiency of 95.8%. Air purification performance test: In a test chamber simulating an indoor environment, a sample coated with the material of this invention was placed. A certain amount of harmful organic pollutants such as formaldehyde and benzene, as well as a bacterial suspension, were injected into the test chamber. A simulated light irradiation device was turned on, and changes in the concentration of harmful gases and the number of bacteria in the test chamber were periodically monitored. The results showed that under light conditions, after 24 hours, the concentrations of formaldehyde and benzene decreased by 85% and 80%, respectively, and the bacterial inactivation rate reached over 90%. Environmental performance testing: The release levels of harmful volatile organic compounds such as formaldehyde and benzene in the materials were tested according to relevant national standards. The test results showed that the formaldehyde release level in the decorative materials of this invention was less than 0.05 mg / m³, and the benzene release level was less than 0.01 mg / m³, far below the national standard limits, and meeting environmental and health requirements. As can be seen from the above embodiments and performance tests, the present invention provides a formula and preparation method for a livable space decoration material with effective PM0.5 blocking nanotechnology. This material can produce high-performance decoration materials with significant advantages in effectively blocking PM0.5, purifying the air, and protecting the environment and health, and has broad market application prospects.

[0019] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A livable space decoration material that effectively blocks PM0.5 using nanotechnology, characterized in that: It is composed of the following components by mass fraction: 30%-50% nanofiber matrix, 10%-20% surface-modified nano-titanium dioxide particles, 5%-10% tourmaline nanopowder, 20%-30% environmentally friendly water-based binder, and 1%-3% additives; the additives include dispersants and defoamers.

2. The livable space decoration material using nanotechnology to effectively block PM0.5 as described in claim 1, characterized in that: The nanofiber matrix is ​​polyimide nanofiber or polyacrylonitrile nanofiber.

3. The livable space decoration material using nanotechnology to effectively block PM0.5 as described in claim 1, characterized in that: The environmentally friendly water-based adhesive is a water-based polyurethane or acrylic emulsion.

4. A method for preparing a livable space decoration material using nanotechnology to effectively block PM0.5 as described in any one of claims 1-3, characterized in that, Includes the following steps: (1) Nanofiber pretreatment: The nanofibers are ultrasonically dispersed in an organic solvent for 30-60 minutes and then dried under vacuum conditions; (2) Surface modification of nano-titanium dioxide: Add nano-titanium dioxide particles to a solution containing silane coupling agent, stir and react at 60-80℃ for 2-3 hours, and then separate by centrifugation, washing and drying for later use; (3) Mixing and dispersing: According to the formula ratio, the pretreated nanofibers, modified nano titanium dioxide, tourmaline nano powder, binder and additives are added to the high-speed mixer in sequence and mixed at a speed of 1000-1500 rpm for 1-2 hours. (4) Grinding and refining: Transfer the mixed material to a ball mill, add grinding media, and grind for 3-5 hours; (5) Finished product preparation: The material after grinding and refining is the finished decoration material.

5. The method for creating a livable space decoration material that effectively blocks PM0.5 nanotechnology, as described in claim 4, is characterized in that: The organic solvent in step (1) is acetone or N,N-dimethylformamide.

6. The method for creating a livable space decoration material that effectively blocks PM0.5 nanotechnology, as described in claim 1, is characterized in that: The solution containing silane coupling agent in step (2) is an ethanol solution containing silane coupling agent.

7. The method for creating a livable space decoration material that effectively blocks PM0.5 nanotechnology, as described in claim 1, is characterized in that: The grinding medium in step (4) is a zirconia ball.

8. The livable space decoration material using nanotechnology to effectively block PM0.5 according to claim 1, characterized in that: The surface-modified nano-titanium dioxide particles are prepared by adding nano-titanium dioxide particles to a solution containing a silane coupling agent, stirring and reacting at 60-80°C for 2-3 hours, followed by centrifugation, washing and drying.

9. A method for creating a livable space decoration material that effectively blocks PM0.5 nanotechnology, as described in claim 4, characterized in that: The vacuum degree of vacuum drying in step (1) is -0.08MPa to -0.09MPa.

10. The livable space decoration material using nanotechnology to effectively block PM0.5 according to claim 1, characterized in that: This decoration material can be made into paint, wallpaper coating paste, or board veneer material.