An advertisement cloth with spray-painted polyvinyl chloride film and a preparation method thereof

Abstract

This invention relates to the field of polymer materials technology, and proposes a polyvinyl chloride (PVC) film for printing on advertising fabrics and its preparation method. The PVC film for printing on advertising fabrics comprises the following components in parts by weight: 100 parts polyvinyl chloride, 30-45 parts plasticizer, 4-8 parts lubricant, 2-3 parts heat stabilizer, 8-12 parts modified calcium carbonate, and 0.5-1 parts micronized silica gel; the modifiers for the modified calcium carbonate include isooctanoic acid and dodecanoic acid. This technical solution solves the problem of insufficient mechanical properties in existing PVC films for printing on advertising fabrics.

Description

Technical Field

[0001] This invention relates to the field of polymer materials technology, specifically to a polyvinyl chloride film for printing on advertising fabrics and its preparation method. Background Technology

[0002] With the booming development of the outdoor advertising industry, the market demand for inkjet-printed polyvinyl chloride (PVC) film, as a key substrate for lightbox fabric, knife-coated fabric, and inflatable materials, is increasing day by day. This type of material is widely used in large outdoor billboards, construction hoardings, and mobile tents. It not only needs to have excellent ink absorption performance and weather resistance, but also must be able to adapt to the complex and ever-changing outdoor climate environment and withstand wind loads and physical tension.

[0003] In existing technologies, calcium carbonate is typically added as a filler to PVC formulations to reduce production costs and improve processing performance. To address the poor compatibility between inorganic fillers and organic resins, the industry often optimizes products by adjusting the types of additives and the proportions of fillers.

[0004] However, under the existing formulation system, the synergistic compatibility of additives and fillers is not good, which easily leads to uneven component dispersion and insufficient interfacial bonding. This results in limited mechanical properties of the membrane material, making it prone to damage and cracking due to wind load and tension during outdoor use, and failing to meet the long-term durability requirements of high-end outdoor advertising fabrics. Summary of the Invention

[0005] This invention proposes a polyvinyl chloride (PVC) film for printing on advertising fabrics and its preparation method, which solves the problem of insufficient mechanical properties of PVC films for printing on advertising fabrics in related technologies.

[0006] The technical solution of the present invention is as follows:

[0007] This invention proposes a polyvinyl chloride film for printing on advertising cloth, comprising the following components in parts by weight: 100 parts polyvinyl chloride, 30-45 parts plasticizer, 4-8 parts lubricant, 2-3 parts heat stabilizer, 8-12 parts modified calcium carbonate, and 0.5-1 parts micronized silica gel.

[0008] The modifiers for the modified calcium carbonate include isooctanoic acid and dodecanoic acid.

[0009] As a further technical solution, the method for preparing the modified calcium carbonate includes the following steps:

[0010] S1. Add calcium chloride to water to obtain a calcium chloride solution, then add polyvinyl alcohol to the calcium chloride solution to obtain a mixed solution; add sodium carbonate to water to obtain a sodium carbonate solution.

[0011] S2. Add isooctanoic acid and dodecanoic acid to anhydrous ethanol and stir to obtain an organic acid solution;

[0012] S3. Add the organic acid solution to the sodium carbonate solution and stir until homogeneous to obtain solution A;

[0013] S4. Add the solution A to the mixed solution, age it to obtain a modified calcium carbonate suspension, filter, dry and grind it to obtain modified calcium carbonate.

[0014] As a further technical solution, the concentration of the calcium chloride solution is 0.05~0.06 mol / L.

[0015] As a further technical solution, the concentration of polyvinyl alcohol in the mixed solution is 4 g / L.

[0016] As a further technical solution, the concentration of the sodium carbonate solution is 0.05~0.06 mol / L.

[0017] As a further technical solution, the molar ratio of isooctanoic acid and dodecanoic acid is 3:0.8~1.2.

[0018] As a further technical solution, the concentration of the organic acid solution is 0.09~0.12 mol / L.

[0019] As a further technical solution, in step S2, the stirring temperature is 40~50℃, the stirring speed is 300~400rpm, and the stirring time is 20~30min.

[0020] As a further technical solution, the volume ratio of the sodium carbonate solution to the organic acid solution is 1:0.8~1.2.

[0021] As a further technical solution, in step S3, the stirring speed is 500~600 rpm and the time is 10~15 min.

[0022] As a further technical solution, the volume ratio of solution A to the mixed solution is 0.8~1.2:1.

[0023] As a further technical solution, the aging time is 2-4 hours.

[0024] As a further technical solution, the drying temperature is 60~70℃ and the time is 20~24h.

[0025] As a further technical solution, the plasticizer includes one of dioctyl phthalate and diisononyl phthalate.

[0026] In this invention, the addition of plasticizer mainly increases the flexibility and flowability of the polyvinyl chloride molecular chain; the plasticizer is one or more of conventional plasticizers, such as dioctyl phthalate, trioctyl trimellitate, diisononyl phthalate, etc.; preferably, the plasticizer is one of dioctyl phthalate and diisononyl phthalate.

[0027] As a further technical solution, the lubricant includes one or both of oxidized polyethylene wax and calcium stearate.

[0028] In this invention, the lubricant can improve the fluidity of each component and make the distribution of each component more uniform; the lubricant is one or more of conventional lubricants, such as oxidized polyethylene wax, polyethylene wax, calcium stearate, stearic acid, etc.; preferably, the lubricant is one or two of oxidized polyethylene wax and calcium stearate.

[0029] As a further technical solution, the heat stabilizer includes a calcium-zinc composite stabilizer.

[0030] As a further technical solution, the printed polyvinyl chloride film for advertising cloth also includes 1 to 3 parts by weight of nitrogen-doped titanium dioxide.

[0031] As a further technical solution, the mass ratio of the modified calcium carbonate to nitrogen-doped titanium dioxide is 2:0.3~0.5.

[0032] In this invention, modified calcium carbonate can reflect and scatter ultraviolet rays, while nitrogen-doped titanium dioxide absorbs ultraviolet rays to further reduce the damage of ultraviolet rays to the PVC film. The two work together to significantly improve the UV aging resistance of the PVC film used for printing on advertising fabrics. The mass ratio of modified calcium carbonate to nitrogen-doped titanium dioxide is limited to 2:0.3~0.5. If the content of nitrogen-doped titanium dioxide is too low, its ability to absorb ultraviolet rays is insufficient, and it cannot fully exert its synergistic effect with modified calcium carbonate. If the content is too high, it may lead to agglomeration, reduce its dispersibility in the PVC film, and weaken the synergistic effect.

[0033] This invention also proposes a method for preparing a polyvinyl chloride (PVC) film for printing on advertising fabrics, comprising the following steps:

[0034] All components are mixed, extruded, and calendered to obtain a polyvinyl chloride film for printing on advertising fabrics.

[0035] The working principle and beneficial effects of this invention are as follows:

[0036] In this invention, calcium carbonate co-modified with isooctanoic acid and dodecanoic acid is added to the inkjet PVC film for advertising fabrics, which can significantly improve the mechanical properties of the film. Calcium carbonate itself, as a filler, can increase the hardness and strength of the film; after co-modification with isooctanoic acid and dodecanoic acid, isooctanoic acid improves the dispersion of calcium carbonate in the matrix, while dodecanoic acid enhances the bonding between calcium carbonate and the matrix, resulting in better stress transmission and thus improving the tensile strength of the PVC film. Isooctanoic acid reduces friction, ensuring smooth sliding of molecular chains, while dodecanoic acid stabilizes the molecular chains through entanglement. The PVC film can better adapt to deformation during stretching, avoiding premature breakage, thereby increasing the tensile fracture strain. Ultimately, the mechanical properties of the inkjet PVC film for advertising fabrics are significantly improved. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0038] In the following embodiments and comparative examples,

[0039] Polyvinyl chloride: Model number SG-8, manufacturer is Xiongxian Yuanqian Trading Co., Ltd.;

[0040] Micronized silica gel: particle size 1000 mesh;

[0041] Calcium carbonate: particle size 300nm;

[0042] Nitrogen-doped titanium dioxide: particle size 50nm, N content >4%, TiO2 content >95%;

[0043] Titanium dioxide: particle size 50nm;

[0044] Oxidized polyethylene wax: Model AC-316A;

[0045] Calcium-zinc composite stabilizer: Model MC 9700 KA / 1;

[0046] Polyvinyl alcohol: Model 217.

[0047] Example 1

[0048] A polyvinyl chloride film for printing on advertising cloth comprises the following components in parts by weight: 100 parts polyvinyl chloride, 30 parts dioctyl phthalate, 4 parts oxidized polyethylene wax, 2 parts calcium-zinc composite stabilizer, 8 parts modified calcium carbonate, and 0.5 parts micronized silica gel.

[0049] The preparation method of modified calcium carbonate includes the following steps:

[0050] Calcium chloride was added to water to obtain a calcium chloride solution with a concentration of 0.05 mol / L. Polyvinyl alcohol was then added to the calcium chloride solution to obtain a mixed solution with a polyvinyl alcohol concentration of 4 g / L.

[0051] Sodium carbonate is added to water to obtain a sodium carbonate solution with a concentration of 0.05 mol / L;

[0052] Isooctanoic acid and dodecanoic acid were added to anhydrous ethanol (molar ratio of isooctanoic acid to dodecanoic acid was 3:1.2), and stirred at 40℃ and 400 rpm for 20 min to obtain an organic acid solution with a concentration of 0.09 mol / L.

[0053] Add an organic acid solution (volume ratio of sodium carbonate solution to organic acid solution is 1:0.8) to a sodium carbonate solution and stir at 500 rpm for 15 min to obtain solution A;

[0054] Then, solution A was added to the mixed solution (the volume ratio of solution A to the mixed solution was 1.2:1), aged for 2 hours, and a modified calcium carbonate suspension was obtained. The suspension was filtered, dried at 60°C for 24 hours, and ground to obtain modified calcium carbonate with a particle size of 300 nm.

[0055] A method for preparing a polyvinyl chloride film for printing on advertising fabric includes the following steps:

[0056] All components are mixed, extruded, and calendered to obtain a polyvinyl chloride film for printing on advertising fabrics.

[0057] Example 2

[0058] A polyvinyl chloride film for printing on advertising cloth comprises the following components in parts by weight: 100 parts polyvinyl chloride, 45 parts diisononyl phthalate, 4 parts oxidized polyethylene wax, 4 parts calcium stearate, 3 parts calcium-zinc composite stabilizer, 12 parts modified calcium carbonate, and 1 part micronized silica gel.

[0059] The preparation method of modified calcium carbonate includes the following steps:

[0060] Calcium chloride was added to water to obtain a calcium chloride solution with a concentration of 0.06 mol / L. Polyvinyl alcohol was then added to the calcium chloride solution to obtain a mixed solution, ensuring that the concentration of polyvinyl alcohol in the mixed solution was 4 g / L.

[0061] Sodium carbonate is added to water to obtain a sodium carbonate solution with a concentration of 0.06 mol / L;

[0062] Isooctanoic acid and dodecanoic acid were added to anhydrous ethanol (molar ratio of isooctanoic acid to dodecanoic acid was 3:0.8), and stirred at 50℃ and 300 rpm for 30 min to obtain an organic acid solution with a concentration of 0.12 mol / L.

[0063] Add an organic acid solution (the volume ratio of sodium carbonate solution to organic acid solution is 1:1.2) to a sodium carbonate solution and stir at 600 rpm for 10 min to obtain solution A;

[0064] Then, solution A was added to the mixed solution (the volume ratio of solution A to the mixed solution was 0.8:1), aged for 4 hours, and a modified calcium carbonate suspension was obtained. The suspension was filtered, dried at 70°C for 20 hours, and ground to obtain modified calcium carbonate with a particle size of 300 nm.

[0065] A method for preparing a polyvinyl chloride film for printing on advertising fabric includes the following steps:

[0066] All components are mixed, extruded, and calendered to obtain a polyvinyl chloride film for printing on advertising fabrics.

[0067] Example 3

[0068] A polyvinyl chloride film for printing on advertising cloth comprises the following components in parts by weight: 100 parts polyvinyl chloride, 38 parts diisononyl phthalate, 3 parts oxidized polyethylene wax, 3 parts calcium stearate, 2.5 parts calcium-zinc composite stabilizer, 10 parts modified calcium carbonate, and 0.6 parts micronized silica gel.

[0069] The preparation method of modified calcium carbonate includes the following steps:

[0070] Calcium chloride was added to water to obtain a calcium chloride solution with a concentration of 0.055 mol / L. Polyvinyl alcohol was then added to the calcium chloride solution to obtain a mixed solution, ensuring that the concentration of polyvinyl alcohol in the mixed solution was 4 g / L.

[0071] Sodium carbonate is added to water to obtain a sodium carbonate solution with a concentration of 0.055 mol / L;

[0072] Isooctanoic acid and dodecanoic acid were added to anhydrous ethanol (molar ratio of isooctanoic acid to dodecanoic acid was 3:1), and stirred at 45℃ and 350 rpm for 25 min to obtain an organic acid solution with a concentration of 0.1 mol / L.

[0073] Add an organic acid solution (the volume ratio of sodium carbonate solution to organic acid solution is 1:1) to a sodium carbonate solution and stir at 550 rpm for 12 min to obtain solution A;

[0074] Then, solution A was added to the mixed solution (the volume ratio of solution A to the mixed solution was 1:1), aged for 3 hours, and a modified calcium carbonate suspension was obtained. The suspension was filtered, dried at 70°C for 20 hours, and ground to obtain modified calcium carbonate with a particle size of 300 nm.

[0075] A method for preparing a polyvinyl chloride film for printing on advertising fabric includes the following steps:

[0076] All components are mixed, extruded, and calendered to obtain a polyvinyl chloride film for printing on advertising fabrics.

[0077] Example 4

[0078] The difference between this embodiment and Embodiment 3 lies only in that a polyvinyl chloride film for printing on advertising cloth is provided, comprising the following components in parts by weight: 100 parts polyvinyl chloride, 38 parts diisononyl phthalate, 3 parts oxidized polyethylene wax, 3 parts calcium stearate, 2.5 parts calcium-zinc composite stabilizer, 10 parts modified calcium carbonate, 0.6 parts micronized silica gel, and 1 part titanium dioxide.

[0079] Example 5

[0080] The difference between this embodiment and Embodiment 3 lies only in that a polyvinyl chloride film for printing on advertising cloth is provided, comprising the following components by weight: 100 parts polyvinyl chloride, 38 parts diisononyl phthalate, 3 parts oxidized polyethylene wax, 3 parts calcium stearate, 2.5 parts calcium-zinc composite stabilizer, 10 parts modified calcium carbonate, 0.6 parts micronized silica gel, and 1 part nitrogen-doped titanium dioxide.

[0081] Example 6

[0082] The difference between this embodiment and Embodiment 3 lies only in that a polyvinyl chloride film for printing on advertising cloth is provided, comprising the following components by weight: 100 parts polyvinyl chloride, 38 parts diisononyl phthalate, 3 parts oxidized polyethylene wax, 3 parts calcium stearate, 2.5 parts calcium-zinc composite stabilizer, 10 parts modified calcium carbonate, 0.6 parts micronized silica gel, and 1.5 parts nitrogen-doped titanium dioxide.

[0083] Example 7

[0084] The difference between this embodiment and Embodiment 3 lies only in that a polyvinyl chloride film for printing on advertising cloth is provided, comprising the following components in parts by weight: 100 parts polyvinyl chloride, 38 parts diisononyl phthalate, 3 parts oxidized polyethylene wax, 3 parts calcium stearate, 2.5 parts calcium-zinc composite stabilizer, 10 parts modified calcium carbonate, 0.6 parts micronized silica gel, and 2.5 parts nitrogen-doped titanium dioxide.

[0085] Example 8

[0086] The difference between this embodiment and Embodiment 3 lies only in that a polyvinyl chloride film for printing on advertising cloth is provided, comprising the following components in parts by weight: 100 parts polyvinyl chloride, 38 parts diisononyl phthalate, 3 parts oxidized polyethylene wax, 3 parts calcium stearate, 2.5 parts calcium-zinc composite stabilizer, 10 parts modified calcium carbonate, 0.6 parts micronized silica gel, and 3 parts nitrogen-doped titanium dioxide.

[0087] Comparative Example 1

[0088] The only difference between this comparative example and Example 3 is that it is an advertising cloth inkjet polyvinyl chloride film, comprising the following components in parts by weight: 100 parts polyvinyl chloride, 38 parts diisononyl phthalate, 3 parts oxidized polyethylene wax, 3 parts calcium stearate, 2.5 parts calcium-zinc composite stabilizer, 10 parts calcium carbonate, and 0.6 parts micronized silica gel.

[0089] Comparative Example 2

[0090] The only difference between this comparative example and Example 3 is that it is a polyvinyl chloride film for printing on advertising cloth, comprising the following components in parts by weight: 100 parts polyvinyl chloride, 38 parts diisononyl phthalate, 3 parts oxidized polyethylene wax, 3 parts calcium stearate, 2.5 parts calcium-zinc composite stabilizer, 10 parts isooctanoic acid modified calcium carbonate, and 0.6 parts micronized silica gel.

[0091] The preparation method of isooctanoic acid modified calcium carbonate includes the following steps:

[0092] Calcium chloride was added to water to obtain a calcium chloride solution with a concentration of 0.055 mol / L. Polyvinyl alcohol was then added to the calcium chloride solution to obtain a mixed solution, ensuring that the concentration of polyvinyl alcohol in the mixed solution was 4 g / L.

[0093] Sodium carbonate is added to water to obtain a sodium carbonate solution with a concentration of 0.055 mol / L;

[0094] Isooctanoic acid was added to anhydrous ethanol and stirred at 45°C and 350 rpm for 25 min to obtain an organic acid solution with a concentration of 0.1 mol / L.

[0095] Add an organic acid solution (the volume ratio of sodium carbonate solution to organic acid solution is 1:1) to a sodium carbonate solution and stir at 550 rpm for 12 min to obtain solution A;

[0096] Then, solution A was added to the mixed solution (the volume ratio of solution A to the mixed solution was 1:1), aged for 3 hours, and a modified calcium carbonate suspension was obtained. The suspension was filtered, dried at 70°C for 20 hours, and ground to obtain isooctanoic acid modified calcium carbonate with a particle size of 300 nm.

[0097] Comparative Example 3

[0098] The only difference between this comparative example and Example 3 is that it is a polyvinyl chloride film for printing on advertising cloth, comprising the following components in parts by weight: 100 parts polyvinyl chloride, 38 parts diisononyl phthalate, 3 parts oxidized polyethylene wax, 3 parts calcium stearate, 2.5 parts calcium-zinc composite stabilizer, 10 parts dodecanoic acid modified calcium carbonate, and 0.6 parts micronized silica gel.

[0099] The preparation method of dodecanoic acid modified calcium carbonate includes the following steps:

[0100] Calcium chloride was added to water to obtain a calcium chloride solution with a concentration of 0.055 mol / L. Polyvinyl alcohol was then added to the calcium chloride solution to obtain a mixed solution, ensuring that the concentration of polyvinyl alcohol in the mixed solution was 4 g / L.

[0101] Sodium carbonate is added to water to obtain a sodium carbonate solution with a concentration of 0.055 mol / L;

[0102] Dodecanoic acid was added to anhydrous ethanol and stirred at 45°C and 350 rpm for 25 min to obtain an organic acid solution with a concentration of 0.1 mol / L.

[0103] Add an organic acid solution (the volume ratio of sodium carbonate solution to organic acid solution is 1:1) to a sodium carbonate solution and stir at 550 rpm for 12 min to obtain solution A;

[0104] Then, solution A was added to the mixed solution (the volume ratio of solution A to the mixed solution was 1:1), aged for 3 hours, and a modified calcium carbonate suspension was obtained. The suspension was filtered, dried at 70°C for 20 hours, and ground to obtain dodecanoic acid modified calcium carbonate with a particle size of 300 nm.

[0105] Experimental Example 1

[0106] The polyvinyl chloride (PVC) films used for printing advertising fabrics prepared in Examples 1-3 and Comparative Examples 1-3 were tested for tensile strength and tensile strain at break according to the methods specified in GB / T 1040.3-2006 "Determination of tensile properties of plastics - Part 3: Test conditions for films and sheets" and GB / T 1040.1-2018 "Determination of tensile properties of plastics - Part 1: General". Type 2 specimens were used, and the test speed was 50 mm / min. The test results are shown in Table 1.

[0107] Table 1. Performance test results of the inkjet-printed PVC films for advertising fabrics prepared in Examples 1-3 and Comparative Examples 1-3

[0108]

[0109] Compared with Comparative Examples 1-3, the transverse and longitudinal tensile strength and tensile breaking strain of the PVC film for printing on advertising cloth prepared in Examples 1-3 are significantly better than those in Comparative Examples 1-3, indicating that the addition of calcium carbonate modified with isooctanoic acid and dodecanoic acid to PVC film can improve the mechanical properties of PVC film.

[0110] Experiment Example 2

[0111] The polyvinyl chloride (PVC) films used for printing advertising fabrics prepared in Examples 3-8 were placed in a UV aging test chamber, with the wavelength of UV irradiation controlled at 350 nm and the radiation intensity at 0.71 W·m. -2 The transverse and longitudinal tensile strengths of the inkjet-printed PVC film used for advertising cloth were tested after two months of continuous ultraviolet irradiation. The test results are shown in Table 2.

[0112] Table 2 Performance test results of the inkjet PVC film for advertising fabric prepared in Examples 3-8

[0113]

[0114] 1. Compared with Examples 3 to 8, the tensile strength of the PVC film for printing on advertising cloth prepared in Examples 4 to 8 after UV aging showed a smaller rate of change in both the transverse and longitudinal tensile strength than that in Example 3. This indicates that the introduction of titanium dioxide or nitrogen-doped titanium dioxide into the PVC film can improve the UV aging resistance of the PVC film.

[0115] 2. Compared with Examples 4-8, the tensile strength of the printed PVC film for advertising fabric prepared in Examples 5-8 after UV aging showed a smaller rate of change in both the transverse and longitudinal tensile strength than that in Example 4, indicating that the introduction of nitrogen-doped titanium dioxide into the PVC film can further improve the UV aging resistance of the PVC film. The tensile strength of the printed PVC film for advertising fabric prepared in Examples 6-7 after UV aging showed a smaller rate of change in both the transverse and longitudinal tensile strength than that in Examples 5 and 8, indicating that limiting the mass ratio of modified calcium carbonate to nitrogen-doped titanium dioxide to 2:0.3-0.5 can further improve the UV aging resistance of the PVC film.

[0116] Application examples

[0117] The polyvinyl chloride film prepared in Example 3 was applied to the advertising cloth for inkjet printing, and the final result was a high-resolution, high-color-saturation inkjet printing effect.

[0118] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A polyvinyl chloride film for inkjet printing on advertising cloth, characterized in that, The product comprises the following components in parts by weight: 100 parts polyvinyl chloride, 30-45 parts plasticizer, 4-8 parts lubricant, 2-3 parts heat stabilizer, 8-12 parts modified calcium carbonate, and 0.5-1 parts micronized silica gel. The modifiers for the modified calcium carbonate include isooctanoic acid and dodecanoic acid; The method for preparing the modified calcium carbonate includes the following steps: S1. Add calcium chloride to water to obtain a calcium chloride solution, then add polyvinyl alcohol to the calcium chloride solution to obtain a mixed solution; add sodium carbonate to water to obtain a sodium carbonate solution. S2. Add isooctanoic acid and dodecanoic acid to anhydrous ethanol and stir to obtain an organic acid solution; S3. Add the organic acid solution to the sodium carbonate solution and stir until homogeneous to obtain solution A; S4. Add the solution A to the mixed solution, age it to obtain a modified calcium carbonate suspension, filter, dry and grind it to obtain modified calcium carbonate; The concentration of the calcium chloride solution is 0.05~0.06 mol / L; The concentration of the sodium carbonate solution is 0.05~0.06 mol / L; The molar ratio of isooctanoic acid to dodecanoic acid is 3:0.8~1.2; The concentration of the organic acid solution is 0.09~0.12 mol / L; The volume ratio of the sodium carbonate solution to the organic acid solution is 1:0.8~1.2; The volume ratio of solution A to the mixed solution is 0.8~1.2:1; The aging time is 2-4 hours.

2. The polyvinyl chloride film for inkjet printing on advertising fabric according to claim 1, characterized in that, The plasticizer includes one of dioctyl phthalate and diisononyl phthalate.

3. The polyvinyl chloride film for inkjet printing on advertising fabric according to claim 1, characterized in that, The lubricant includes one or both of oxidized polyethylene wax and calcium stearate.

4. The polyvinyl chloride film for inkjet printing on advertising fabric according to claim 1, characterized in that, The heat stabilizer includes a calcium-zinc composite stabilizer.

5. The polyvinyl chloride film for inkjet printing on advertising fabric according to claim 1, characterized in that, The printed polyvinyl chloride film for advertising cloth also includes 1 to 3 parts by weight of nitrogen-doped titanium dioxide.

6. The polyvinyl chloride film for inkjet printing on advertising fabric according to claim 5, characterized in that, The mass ratio of the modified calcium carbonate to nitrogen-doped titanium dioxide is 2:0.3~0.

5.

7. A method for preparing a polyvinyl chloride (PVC) film for printing on advertising fabrics, used to prepare the PVC film for printing on advertising fabrics as described in any one of claims 1 to 6, characterized in that, Includes the following steps: All components are mixed, extruded, and calendered to obtain a polyvinyl chloride film for printing on advertising fabrics.

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