A photocatalyst antibacterial and formaldehyde removal material for plastic plant production and preparation method thereof

Abstract

The invention discloses a photocatalyst antibacterial formaldehyde removal material for plastic plant production and a preparation method thereof, and belongs to the technical field of plastic plant production. The photocatalyst antibacterial formaldehyde removal material comprises the following components by weight: 60-90 parts of acrylonitrile-butadiene-styrene resin, 5-10 parts of compatibilizer, 5-10 parts of photocatalyst antibacterial formaldehyde removal functional masterbatch, 0.1-1 parts of antioxidant, 0.1-1 parts of light stabilizer, 0.1-1 parts of ultraviolet absorber, and 0.1-5 parts of toner. The present invention adopts the scheme of ABS resin plus photocatalyst antibacterial formaldehyde removal functional masterbatch, so that the plastic simulation plant has the performance of photocatalytic formaldehyde removal function, antibacterial performance and light aging resistance at the same time, while satisfying the ornamental property of plastic plants, the functional advantage is increased.

Description

Technical Field

[0001] The invention relates to the technical field of plastic plant production, in particular to a photocatalyst antibacterial and formaldehyde-removing material for plastic plant production and a preparation method thereof. Background Art

[0002] In the home decoration and furniture industry, formaldehyde content is often the focus of people's attention. If patients are in an environment with high formaldehyde concentration for a long time, they may experience dizziness, headache, tearing, nausea and vomiting, coughing, chest tightness, leukemia, etc., and severe cases may lead to death. Currently known methods for removing formaldehyde include ventilation, using activated carbon adsorption capacity, using green plants for absorption, photocatalytic decomposition, using air purifiers and water dissolution. In order to speed up the removal of formaldehyde, people often combine these methods according to their actual situation to achieve the best effect.

[0003] Plastic plants, also known as simulated plants, do not require soil and water, are not affected by seasons and the environment, do not require oxidation, and have strong plasticity. They have gradually become important environmental decorations for hotels, exhibitions, hotels, shopping malls, indoor places, etc. However, with the development of the industry, plastic plants with simple decorative functions can no longer meet people's needs, so functional plastic plants have emerged. For example, patent CN107119540A discloses an artificial lawn for repelling mosquitoes and insects, and CN109338847A discloses an artificial lawn for photocatalytic formaldehyde removal. However, in order to achieve the effect of photocatalytic formaldehyde removal in the prior art, a large amount of titanium dioxide powder is often needed to be added. As a white colorant, titanium dioxide will affect the color matching of plastic plants when the content is too much. In the processing process, if you want to achieve the same color matching as without adding titanium dioxide, you need to add more color powder, but adding too much color powder will have an adverse effect on the mechanical properties and aging resistance of the material. On the other hand, photocatalyst simulated plants need to be in the presence of light such as sunlight or artificial light to exert the effect of photocatalytic oxidation and decomposition, and most plastics will have the problem of colorant fading under long-term light conditions, and the light reaction produced by excessive titanium dioxide content can easily cause the surface of the material to become powdery, aggravating the aging of plastic plants. It should also be noted that the pigments released by some molds or microorganisms can also cause the discoloration of plastics. Therefore, it is urgent to develop a functional plastic plant that meets the requirements of antibacterial, photocatalytic formaldehyde removal and light aging resistance. Summary of the invention

[0004] The purpose of the present invention is to provide a photocatalytic antibacterial formaldehyde removal material for plastic plant production and a preparation method thereof. Compared with traditional plastic plant materials, the photocatalytic antibacterial formaldehyde removal material provided by the present invention not only has the function of photocatalytic formaldehyde removal, but also has significant antibacterial properties, while ensuring that the mechanical properties and aging resistance of the plastic plant meet actual use requirements.

[0005] To achieve the above object, the technical solution adopted by the present invention is: a photocatalyst antibacterial formaldehyde removal material, which comprises the following components by weight: 60-90 parts of acrylonitrile-butadiene-styrene (ABS) resin, 5-10 parts of a compatibilizer, 5-10 parts of a photocatalyst antibacterial formaldehyde removal functional masterbatch, 0.1-1 part of an antioxidant, 0.1-1 part of a light stabilizer, 0.1-1 part of an ultraviolet absorber, and 0.1-5 parts of a toner. The photocatalyst is titanium dioxide, and the photocatalyst antibacterial formaldehyde removal functional masterbatch is prepared by the following steps:

[0006] S1. The titanium source and the silicon powder are mixed and calcined to obtain silicon powder-loaded titanium dioxide, wherein the titanium content (wt%) of the silicon powder-loaded titanium dioxide is controlled at 0.5-2%;

[0007] S2. The silver ion source and the silicon powder are mixed and calcined to obtain silicon powder-loaded silver oxide, wherein the silver content (wt%) of the silicon powder-loaded silver oxide is controlled at 10-20%;

[0008] S3. The zinc ion source and the silicon powder are mixed and calcined to obtain silicon powder-loaded zinc oxide, wherein the zinc content (wt%) of the silicon powder-loaded zinc oxide is controlled at 5-15%;

[0009] S4. Mix 3-7 parts of the silicon micropowder loaded with titanium dioxide, silicon micropowder loaded with silver oxide, and silicon micropowder loaded with zinc oxide in a mass ratio of 1:(1-3):(1-3) with 93-97 parts of acrylonitrile-butadiene-styrene resin, and then melt-extrude to obtain a photocatalyst antibacterial and formaldehyde-removing functional masterbatch.

[0010] In order to avoid the need to add a large amount of titanium dioxide and silver-containing antioxidants and zinc-containing antioxidants to traditional antibacterial and photocatalytic formaldehyde removal materials, the present invention uses a titanium source and silicon micropowder mixed and calcined to obtain silicon micropowder-loaded titanium dioxide, which, on the one hand, avoids the problem of excessive addition of titanium dioxide affecting color expression, and on the other hand, compared with the addition of ordinary titanium dioxide, the titanium dioxide content in the silicon micropowder-loaded titanium dioxide prepared by the above scheme is extremely low, and exists in nano form on the surface of the load material, ensuring the dispersibility of the photocatalytic sites, and having a more efficient photocatalytic formaldehyde removal effect. Similarly, nano-dispersed silver oxide and zinc oxide also have a more efficient antibacterial effect.

[0011] Preferably, the photocatalyst antibacterial and formaldehyde removal material comprises the following components by weight: 70-80 parts of acrylonitrile-butadiene-styrene resin, 6-8 parts of styrene-maleic anhydride copolymer, 6-8 parts of photocatalyst antibacterial and formaldehyde removal functional masterbatch, 0.1-1 part of antioxidant, 0.1-1 part of light stabilizer, 0.1-1 part of ultraviolet absorber, and 2-4 parts of color powder.

[0012] Preferably, the ABS resin has a melt mass flow rate of 10 to 30 g / 10 min at 220° C. and 10 kg load according to ISO1133-2012 standard. ABS resin with a melt mass flow rate of 10 to 30 g / 10 min has better processing performance and is conducive to the dispersion of photocatalyst antibacterial and formaldehyde removal functional masterbatch.

[0013] Preferably, the compatibilizer is one or more of ABS grafted maleic anhydride, styrene-maleic anhydride copolymer or styrene-acrylonitrile-glycidyl methacrylate copolymer.

[0014] Preferably, the silicon micropowder used in the photocatalyst antibacterial and formaldehyde removal functional masterbatch is molten silicon micropowder, and the D50 particle size of the silicon micropowder is 0.5-10μm. Further preferably, the D50 particle size of the silicon micropowder is 0.5-2μm. The smaller the particle size of the silicon micropowder, the larger the surface area it can provide, which is more conducive to the dispersion of titanium dioxide, silver oxide and zinc oxide. At the same time, the porous structure of the silicon micropowder provides the effect of adsorbing formaldehyde, which is more conducive to the photocatalytic reaction.

[0015] Preferably, the titanium source used in the photocatalyst antibacterial formaldehyde removal functional masterbatch is selected from one of tetrabutyl titanate and isobutyl titanate; the silver ion source used is selected from one of silver nitrate and silver chloride; and the zinc ion source used is selected from one of zinc nitrate and zinc chloride.

[0016] Further preferably, the titanium source used in the photocatalyst antibacterial and formaldehyde-removing functional masterbatch is selected from tetrabutyl titanate; the silver ion source used is selected from silver nitrate; and the zinc ion source used is selected from zinc nitrate.

[0017] Preferably, the antioxidant consists of a primary antioxidant and a secondary antioxidant, the primary antioxidant is selected from hindered phenol antioxidants, specifically, the hindered phenol antioxidant is selected from at least one of hindered phenol antioxidant 1010, hindered phenol antioxidant 1076 and hindered phenol antioxidant 245; the secondary antioxidant is selected from phosphite antioxidants, specifically, the phosphite antioxidant is selected from at least one of phosphite antioxidant 168 and phosphite antioxidant PEP-36.

[0018] Preferably, the light stabilizer is a hindered amine light stabilizer; and the ultraviolet absorber is a benzotriazole ultraviolet absorber.

[0019] Preferably, the toner is one or more of organic toner or inorganic toner. Specifically, the organic toner is an organic dye and / or an organic pigment; the organic pigment includes one or more of azo pigments, phthalocyanine pigments, triaryl methane pigments, and polycyclic pigments; the organic dye includes one or more of azo dyes, anthracene dyes, indigo dyes, sulfur dyes, aromatic methane dyes, cyanine dyes, phthalocyanine dyes, and hybrid dyes; the inorganic color powder is one or more of iron oxide red, ultramarine red, ultramarine violet, ultramarine blue, and molybdenum bismuth yellow.

[0020] Preferably, in the steps S1-S3 of preparing the photocatalyst antibacterial and formaldehyde-removing functional masterbatch, the calcination temperature is controlled at 300-500° C., the time is controlled at 3-5 hours, and the calcination equipment can be a muffle furnace or a tubular furnace.

[0021] Preferably, in step S4 of preparing the photocatalyst antibacterial and formaldehyde-removing functional masterbatch, the ABS resin and the silicon powder loading material are mixed and melt-extruded and granulated at 210-250° C. through a twin-screw extruder.

[0022] Preferably, the ABS resin in the photocatalyst antibacterial and formaldehyde-removing functional masterbatch is the same as the ABS resin used in the photocatalyst antibacterial and formaldehyde-removing material.

[0023] The present invention also protects a method for preparing the above-mentioned photocatalyst antibacterial formaldehyde removal material, comprising the following steps: weighing various raw materials according to a ratio, adding the above-mentioned raw materials to a premixer for mixing to obtain a mixture; feeding the mixture from a main feeding port into a twin-screw extruder for melt extrusion, granulation, and drying to obtain the photocatalyst antibacterial formaldehyde removal material.

[0024] Among them, the feeding speed of the twin-screw extruder is 200-350rpm; the temperature of each section of the screw of the twin-screw extruder from the feeding port to the die head is preferably 220-250°C in zone 1, 220-240°C in zone 2, 210-220°C in zone 3, 210-230°C in zone 4, 210-230°C in zone 5, the die temperature is 220-230°C, the main engine speed is 100-500r / min, and the vacuum degree is ≤0.1MPa.

[0025] The present invention also protects the application of the photocatalyst antibacterial and formaldehyde-removing material in the production of plastic plants.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The invention discloses a photocatalyst antibacterial formaldehyde removal material for plastic plant production. By adding a compatibilizer, a photocatalyst antibacterial formaldehyde removal functional masterbatch, an antioxidant, a light stabilizer, an ultraviolet absorber, and a color powder component into ABS resin, the technical effect of having a photocatalytic formaldehyde removal function, an antibacterial property, and a light aging resistance property is achieved, and the effect of poor light aging effect caused by the need to add a large amount of titanium dioxide, silver-containing antioxidants, and zinc-containing antioxidants in traditional antibacterial and photocatalytic formaldehyde removal materials is avoided. In addition, the addition of the compatibilizer ensures the processing performance of the composition, and the light stabilizer and the ultraviolet absorber further improve the light aging resistance effect of the composition, so that the composition is more suitable for the production of plastic plants and the function of photocatalytic formaldehyde removal. DETAILED DESCRIPTION

[0028] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In the examples, the experimental methods used are conventional methods unless otherwise specified, and the materials, reagents, etc. used are all commercially available unless otherwise specified.

[0030] The raw materials used in the embodiments and comparative examples are described below:

[0031] ABS resin 1: brand ABS 8391, melt mass flow rate 30g / 10min, manufacturer Shanghai Gaoqiao Petrochemical;

[0032] ABS resin 2: brand ABS275, melt mass flow rate 10g / 10min, manufacturer Shanghai Gaoqiao Petrochemical;

[0033] ABS resin 3: brand ABS 3513, melt flow rate 8g / 10min, manufacturer Shanghai Gaoqiao Petrochemical;

[0034] ABS resin 4: brand ABS 750, melt flow rate 35g / 10min, manufacturer Kumho Petrochemical Co., Ltd. of South Korea;

[0035] Compatibilizer 1: Styrene-maleic anhydride copolymer: brand name SMA-700, manufacturer: Shanghai Huawen Electronic New Materials Co., Ltd.;

[0036] Compatibilizer 2: ABS grafted with maleic anhydride, brand name HW-102M, manufacturer: Shanghai Huawen Electronic New Materials Co., Ltd.;

[0037] Silicon powder 1: fused silicon powder, D50 is 0.5 μm, the manufacturer is Jiangsu Lianrui New Materials Co., Ltd.;

[0038] Silicon powder 2: fused silicon powder, D50 is 2μm, the manufacturer is Jiangsu Lianrui New Materials Co., Ltd.;

[0039] Silicon powder 3: fused silicon powder, D50 is 10μm, the manufacturer is Jiangsu Lianrui New Materials Co., Ltd.;

[0040] Silicon powder 4: crystalline silicon powder, D50 is 0.5μm, the manufacturer is Jiangsu Lianrui New Materials Co., Ltd.;

[0041] Photocatalyst antibacterial and formaldehyde removal functional masterbatch: homemade, the specific steps are as follows:

[0042] S1. Tetrabutyl titanate and silicon powder were mixed according to the ratio in Table 1 and then heated to 400°C in a muffle furnace at a heating rate of 2°C / min for 4 hours to obtain silicon powder-loaded titanium dioxide;

[0043] S2. After silver nitrate was dissolved in deionized water and mixed with silicon powder according to the ratio in Table 1, the mixture was heated to 400°C in a muffle furnace at a heating rate of 2°C / min for 4 hours to obtain silicon powder loaded with silver oxide, wherein the volume ratio of deionized water to silicon powder was 1:10;

[0044] S3. Dissolve zinc nitrate in deionized water and mix with silicon powder according to the ratio in Table 1, and then heat to 400°C in a muffle furnace at a heating rate of 2°C / min for 4 hours to obtain silicon powder-loaded zinc oxide, wherein the volume ratio of deionized water to silicon powder is 1:10;

[0045] S4. The above-obtained silicon powder loaded with titanium dioxide, silicon powder loaded with silver oxide, silicon powder loaded with zinc oxide and ABS resin are mixed according to the ratio in Table 1, and then melt-extruded and granulated at 210-250° C. through a twin-screw extruder to obtain a photocatalyst antibacterial and formaldehyde-removing functional masterbatch.

[0046] The above-mentioned tetrabutyl titanate, zinc nitrate and silver nitrate are all commercially available;

[0047] Nano titanium dioxide: P25 fumed nano titanium dioxide, Degussa;

[0048] Silver oxide: ≥99%, Shanghai Yunhong New Materials;

[0049] Zinc oxide: ≥99%, Shanghai Yuanjiang Chemical;

[0050] Antioxidant: a compound of antioxidant 1010 and antioxidant 168 in a weight ratio of 1:2, commercially available;

[0051] Light stabilizer: TINUVIN 770DF, hindered amine light stabilizer, commercially available;

[0052] UV absorber: UV326, benzotriazole UV absorber, commercially available

[0053] Color powder: Molybdenum bismuth yellow, commercially available

[0054] Unless otherwise specified, the components and raw materials used in the embodiments and comparative examples of the present invention are all commercially available raw materials, and the components and raw materials used in each parallel experiment are all of the same kind.

[0055] Table 1 Content of each component of photocatalyst antibacterial and formaldehyde removal functional masterbatch (weight percentage)

[0056]

[0057]

[0058] Example 1-13 A photocatalyst antibacterial formaldehyde removal material for plastic plant production and its preparation method

[0059] Example 1-13 provides a photocatalyst antibacterial formaldehyde removal material for plastic plant production and a preparation method thereof. The weight formula is shown in Table 2. The preparation method is as follows:

[0060] 1) Weigh the raw materials by weight;

[0061] 2) adding ABS resin, compatibilizer, photocatalyst antibacterial formaldehyde removal functional masterbatch, antioxidant, light stabilizer, ultraviolet absorber and toner into a premixer to obtain a mixture; feeding the mixture into a twin-screw extruder from a main feeding port for melt extrusion, granulation and drying to obtain the photocatalyst antibacterial formaldehyde removal material, wherein the feeding speed of the twin-screw extruder is 200-350rpm; the temperature of each section of the screw of the twin-screw extruder from the feeding port to the die is preferably 240°C for zone 1, 230°C for zone 2, 220°C for zone 3, 230°C for zone 4 and 220°C for zone 5, the die temperature is 220°C, the main engine speed is 350r / min, and the vacuum degree is 0.1MPa.

[0062] The preparation method of Comparative Example 1-2 is the same as that of Example 1-13, and the weight formula is shown in Table 3

[0063] The preparation method of the photocatalyst antibacterial and formaldehyde removal functional masterbatch 12 in Comparative Example 3 is as follows: 1.5 parts by weight of titanium dioxide are mixed with 98.5 parts of silicon micropowder to obtain a mixture 1, 15 parts of silver oxide are mixed with 85 parts of silicon micropowder to obtain a mixture 2, 10 parts of zinc oxide are mixed with 90 parts of silicon micropowder to obtain a mixture 3, and then 1 part each of the mixtures 1, 2, and 3 are mixed with 97 parts of ABS resin 1, and then melt-extruded and granulated at 210-250°C through a twin-screw extruder to obtain the photocatalyst antibacterial and formaldehyde removal functional masterbatch 12.

[0064] The preparation method of the photocatalyst antibacterial and formaldehyde removal functional masterbatch 13 in Comparative Example 4 is as follows: 1 part each of titanium dioxide, silver oxide and zinc oxide is mixed with 97 parts of ABS resin 1, and then melt-extruded and granulated at 210-250° C. through a twin-screw extruder to obtain the photocatalyst antibacterial and formaldehyde removal functional masterbatch 13.

[0065] Table 2

[0066]

[0067]

[0068] Table 3

[0069] Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 ABS resin 1 80 80 80 80 Compatibilizer 1 6 6 6 Functional Masterbatch 8 6 Functional Masterbatch 9 6 Functional Masterbatch 12 6 Functional Masterbatch 13 6 Antioxidants 0.2 0.2 0.2 0.2 Light Stabilizer 0.2 0.2 0.2 0.2 UV absorber 0.2 0.2 0.2 0.2 Toner 1 1 1 1

[0070] The photocatalyst antibacterial and formaldehyde removal materials for plastic plant production prepared in Examples 1-13 and Comparative Examples 1-4 were subjected to the following performance tests, and the results are shown in Table 4, respectively.

[0071] 1. Photocatalytic formaldehyde removal effect: Test conditions: The sample is injection molded into a 50mm×50mm×3mm sample plate. The reaction equipment is a sealed light-proof box connected to a formaldehyde tester. Before the experiment, the sample to be tested is placed in the box, and the formaldehyde tester is adjusted to set the formaldehyde background value to 0mg / m 3 Then, formaldehyde gas is introduced to make the formaldehyde gas in the box 1mg / m 3 , turn on the light in the box, conduct a photocatalytic experiment, record the formaldehyde concentration before the start of photocatalysis and the formaldehyde concentration after 24 hours of photocatalysis, and calculate the formaldehyde degradation rate.

[0072] 2. Antibacterial effect: The samples were injection molded into 50mm×50mm×3mm specimens, and the antibacterial effect was tested in accordance with GB / 31402-2015 standard. The antibacterial rates of the materials against Escherichia coli and Staphylococcus aureus were tested respectively.

[0073] 3. Light aging test: The samples are injection molded into 50mm×50mm×3mm samples and light aging test is carried out in accordance with GB / T16422.2-2014 standard. Specifically, the samples are placed in a xenon lamp aging box and subjected to 1000 hours of light aging. Then the color change of the samples is evaluated, the color stability is evaluated, and the change of grayscale is recorded; the highest grayscale level is 5 and the lowest is 1. The higher the value, the smaller the color change of the material after xenon lamp aging, the more stable the color, and the better the aging resistance of the sample.

[0074] Table 4

[0075]

[0076]

[0077] From the results in Table 4, it can be seen that the formaldehyde degradation rate of the photocatalyst antibacterial formaldehyde removal materials prepared in Examples 1-13 is above 75%, specifically 77.2% to 86.1%, the antibacterial rate is above 95%, specifically 95% to 99.9%, and the grayscale level after light aging is above 4, which meets the requirements for preparing plastic plant materials.

[0078] It can be seen from Comparative Example 3 that when the preparation method of the photocatalyst antibacterial formaldehyde removal functional masterbatch of the present invention is not used, but the conventional direct use of titanium dioxide, silver oxide and zinc oxide as photocatalysts and antibacterial agents is adopted, if the added titanium dioxide, silver oxide and zinc oxide are low in proportion, the photocatalytic formaldehyde removal effect is only 36.2%, and the antibacterial rate is also lower than 75%. However, if the proportion of titanium dioxide, silver oxide and zinc oxide is increased in order to achieve a satisfactory antibacterial formaldehyde removal effect, since metal oxides such as titanium dioxide have a certain coloring effect, the material sample of Comparative Example 4 has a significant color difference from that of Example 1, which affects the expression of the color effect of the simulated plants, and possibly because of the addition of more powders, the sample becomes powdery after light aging, and the color difference is more obvious than before light aging, which cannot meet the use requirements.

[0079] It can be seen from Examples 1, 5-7, Comparative Examples 1 and 2 that the content of titanium dioxide needs to be controlled between 0.5% and 2%. When it is lower than 0.5%, the photocatalytic effect is not obvious. When it is higher than 2%, the photocatalytic sites are saturated and titanium dioxide nanoparticles may agglomerate, which in turn leads to a decrease in the photocatalytic effect.

[0080] It can be seen from Examples 1-4 that the selection of silicon micropowder has a great influence on the performance of photocatalytic antibacterial and formaldehyde removal materials. When the particle size of silicon micropowder is large, its specific surface area is small, and the adsorption sites and catalytic sites are insufficient, thereby affecting the photocatalytic antibacterial and formaldehyde removal functions. When crystalline silicon micropowder is selected, its photocatalytic formaldehyde removal and antibacterial effects are poor.

[0081] It can be seen from Examples 1 and 10-12 that the melt mass flow rate of ABS resin also has a great influence. Too high or too low melt mass flow rate will affect the performance of the photocatalyst antibacterial formaldehyde removal material.

[0082] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A photocatalyst antibacterial and formaldehyde-removing material for plastic plant production, characterized in that: The invention comprises the following components by weight: 60-90 parts of acrylonitrile-butadiene-styrene resin, 5-10 parts of compatibilizer, 5-10 parts of photocatalyst antibacterial and formaldehyde removal functional masterbatch, 0.1-1 parts of antioxidant, 0.1-1 parts of light stabilizer, 0.1-1 parts of ultraviolet absorber, 0.1-5 parts of color powder, the photocatalyst is titanium dioxide, and the photocatalyst antibacterial and formaldehyde removal functional masterbatch is prepared by the following steps: S1. The titanium source and the silicon powder are mixed and calcined to obtain silicon powder-loaded titanium dioxide, wherein the titanium content of the silicon powder-loaded titanium dioxide is controlled at 0.5-2wt%; S2. The silver ion source and the silicon powder are mixed and calcined to obtain silicon powder-loaded silver oxide, wherein the silver content of the silicon powder-loaded silver oxide is controlled at 10-20wt%; S3. The zinc ion source and the silicon powder are mixed and calcined to obtain silicon powder-loaded zinc oxide, wherein the zinc content of the silicon powder-loaded zinc oxide is controlled at 5-15wt%; S4. Mix 3-7 parts of silicon micropowder loaded with titanium dioxide, silicon micropowder loaded with silver oxide, silicon micropowder loaded with zinc oxide in a mass ratio of 1:(1-3):(1-3) and 93-97 parts of acrylonitrile-butadiene-styrene resin, and melt extrude them to obtain a photocatalyst antibacterial and formaldehyde removal functional masterbatch.

2. The photocatalyst antibacterial formaldehyde removal material according to claim 1, characterized in that: According to ISO1133-2012 standard, the melt mass flow rate of the acrylonitrile-butadiene-styrene resin is 10 to 30 g / 10 min at 220° C. and 10 kg load.

3. The photocatalyst antibacterial formaldehyde removal material according to claim 1, characterized in that: The compatibilizer is one or more of ABS grafted maleic anhydride, styrene-maleic anhydride copolymer or styrene-acrylonitrile-glycidyl methacrylate copolymer.

4. The photocatalyst antibacterial formaldehyde removal material according to claim 1, characterized in that: The silicon micropowder is molten silicon micropowder, and the D50 particle size of the silicon micropowder is 0.5-10 μm.

5. The photocatalyst antibacterial formaldehyde removal material according to claim 1, characterized in that: The titanium source is selected from one of tetrabutyl titanate and isobutyl titanate; the silver ion source is selected from one of silver nitrate and silver chloride; and the zinc ion source is selected from one of zinc nitrate and zinc chloride.

6. The photocatalyst antibacterial formaldehyde removal material according to claim 1, characterized in that: The antioxidant consists of a main antioxidant and a secondary antioxidant, wherein the main antioxidant is selected from hindered phenol antioxidants, and the secondary antioxidant is selected from phosphite antioxidants; the light stabilizer is a hindered amine light stabilizer; and the ultraviolet absorber is a benzotriazole ultraviolet absorber.

7. The photocatalyst antibacterial formaldehyde removal material according to claim 1, characterized in that: The toner is one or more of organic toner and inorganic toner.

8. The photocatalyst antibacterial formaldehyde removal material according to claim 1, characterized in that: The calcination temperature in the steps S1-S3 is controlled at 300-500° C. and the calcination time is controlled at 3-5 hours.

9. The method for preparing the photocatalyst antibacterial and formaldehyde-removing material according to any one of claims 1 to 8, characterized in that: Various raw materials are weighed according to the ratio, and the raw materials are added into a premixer for mixing to obtain a mixture; the mixture is fed into a twin-screw extruder from a main feeding port for melt extrusion, granulation, and drying to obtain the photocatalyst antibacterial formaldehyde removal material.

10. Use of the photocatalyst antibacterial and formaldehyde-removing material according to any one of claims 1 to 8 in producing plastic plants.

Images