Spraying polyvinyl chloride film for advertising cloth and preparation method of spraying polyvinyl chloride film

Abstract

The invention relates to the technical field of high polymer materials, and provides a printing polyvinyl chloride film for advertising cloth and a preparation method thereof. The inkjet polyvinyl chloride film for the advertising cloth comprises the following components in parts by weight: 100 parts of polyvinyl chloride, 30-45 parts of a plasticizer, 4-8 parts of a lubricant, 2-3 parts of a heat stabilizer, 8-12 parts of modified calcium carbonate and 0.5-1 part of superfine silica powder, a modifier of the modified calcium carbonate comprises isocaprylic acid and dodecanedioic acid. According to the technical scheme, the problem that the mechanical property of the inkjet polyvinyl chloride film for the advertising cloth in the prior art is insufficient is solved.

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: 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. The modifiers for the modified calcium carbonate include isooctanoic acid and dodecanoic acid.

[0007] As a further technical solution, 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, the solution A is added to the mixed solution, aging, to obtain a modified calcium carbonate suspension, filtration, drying, grinding, to obtain a modified calcium carbonate.

[0008] As a further technical solution, the concentration of the calcium chloride solution is 0.05-0.06 mol / L.

[0009] As a further technical solution, the concentration of the polyvinyl alcohol in the mixed solution is 4 g / L.

[0010] As a further technical solution, the concentration of the sodium carbonate solution is 0.05-0.06 mol / L.

[0011] As a further technical solution, the molar ratio of isooctanoic acid and dodecanedioic acid is 3:0.8-1.2.

[0012] As a further technical solution, the concentration of the organic acid solution is 0.09-0.12 mol / L.

[0013] As a further technical solution, in step S2, the temperature of the stirring is 40-50℃, the speed is 300-400 rpm, and the time is 20-30 min.

[0014] As a further technical solution, the volume ratio of the sodium carbonate solution and the organic acid solution is 1:0.8-1.2.

[0015] As a further technical solution, in step S3, the stirring speed is 500-600 rpm, and the time is 10-15 min.

[0016] As a further technical solution, the volume ratio of the solution A and the mixed solution is 0.8-1.2:1.

[0017] As a further technical solution, the aging time is 2-4 h.

[0018] As a further technical solution, the drying temperature is 60-70℃, and the time is 20-24 h.

[0019] As a further technical solution, the plasticizer includes one of dioctyl phthalate and diisononyl phthalate.

[0020] In the present application, 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, for example, it can be dioctyl phthalate, trioctyl trimellitate, diisononyl phthalate, etc.; preferably, the plasticizer is one of dioctyl phthalate and diisononyl phthalate.

[0021] As a further technical solution, the lubricant comprises one or both of oxidized polyethylene wax and calcium stearate.

[0022] In the present application, the lubricant can improve the flowability 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 both of oxidized polyethylene wax and calcium stearate.

[0023] As a further technical solution, the heat stabilizer comprises a calcium-zinc composite stabilizer.

[0024] As a further technical solution, the advertising cloth uses a spray-drawing polyvinyl chloride film further comprising 1-3 parts by weight of nitrogen-doped titanium dioxide.

[0025] As a further technical solution, the mass ratio of the modified calcium carbonate and the nitrogen-doped titanium dioxide is 2:0.3-0.5.

[0026] In the present application, the modified calcium carbonate can reflect and scatter ultraviolet light, and the nitrogen-doped titanium dioxide further reduces the damage of ultraviolet light to the polyvinyl chloride film by absorbing ultraviolet light, and the two cooperate with each other to significantly improve the ultraviolet aging resistance of the advertising cloth spray-drawing polyvinyl chloride film; the mass ratio of the modified calcium carbonate and the nitrogen-doped titanium dioxide is limited to 2:0.3-0.5, if the content of nitrogen-doped titanium dioxide is too low, the ultraviolet absorption ability is insufficient, and the synergistic effect with the modified calcium carbonate cannot be fully played; if the content is too high, it may cause agglomeration, reduce its dispersibility in the polyvinyl chloride matrix, and weaken the synergistic effect.

[0027] The present application also proposes a preparation method of the advertising cloth spray-drawing polyvinyl chloride film, for preparing the advertising cloth spray-drawing polyvinyl chloride film, comprising the following steps: Mix all components, extrude and calender to obtain the advertising cloth spray-drawing polyvinyl chloride film.

[0028] The working principle and beneficial effects of the present application are: In the present application, the calcium carbonate modified by isooctanoic acid and dodecanedioic acid is added into the spray-painted polyvinyl chloride film for advertising cloth, so that the mechanical properties of the spray-painted polyvinyl chloride film for advertising cloth can be significantly improved. The calcium carbonate itself can increase the hardness and strength of the film as a filler; after being modified by isooctanoic acid and dodecanedioic acid, the isooctanoic acid makes the dispersibility of the calcium carbonate in the matrix better, and the dodecanedioic acid enhances the combination of the calcium carbonate and the matrix, so that the stress can be better transmitted, thereby improving the tensile strength of the polyvinyl chloride film; the isooctanoic acid reduces the friction to ensure the smooth sliding of the molecular chain, and the dodecanedioic acid makes the molecular chain more stable through entanglement, so that the polyvinyl chloride film can better adapt to deformation in the stretching process and avoid premature rupture, thereby improving the tensile strain at break, and finally the mechanical properties of the spray-painted polyvinyl chloride film for advertising cloth are significantly improved. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0030] In the following examples and comparative examples, Polyvinyl chloride: model SG-8, manufacturer Xiong County Yuangian Trading Co., Ltd.; Micro-powder silica gel: particle size 1000 mesh; Calcium carbonate: particle size 300 nm; Nitrogen-doped titanium dioxide: particle size 50 nm, N content > 4%, TiO2 content > 95%; Titanium dioxide: particle size 50 nm; Oxidized polyethylene wax: model AC-316A; Calcium-zinc composite stabilizer: model MC 9700 KA / 1; Polyvinyl alcohol: model 217.

[0031] Example 1 A spray-painted polyvinyl chloride film for advertising cloth comprises the following components in parts by weight: polyvinyl chloride 100 parts, dioctyl phthalate 30 parts, oxidized polyethylene wax 4 parts, calcium-zinc composite stabilizer 2 parts, modified calcium carbonate 8 parts, and micro-powder silica gel 0.5 parts. The preparation method of the modified calcium carbonate comprises the following steps: Calcium chloride is added to water to obtain a calcium chloride solution with a concentration of 0.05 mol / L, and polyvinyl alcohol is added to the calcium chloride solution to obtain a mixed solution, and the concentration of the polyvinyl alcohol in the mixed solution is 4 g / L; Sodium carbonate is added to water to obtain a sodium carbonate solution with a concentration of 0.05 mol / L; Isooctanoic acid and dodecanedioic acid are added to anhydrous ethanol (the molar ratio of isooctanoic acid to dodecanedioic acid is 3:1.2), stirred at 40℃ and 400rpm for 20min to obtain an organic acid solution with a concentration of 0.09 mol / L; The organic acid solution is added to the sodium carbonate solution (the volume ratio of the sodium carbonate solution to the organic acid solution is 1:0.8), stirred at 500rpm for 15min to obtain solution A; Then solution A is added to the mixed solution (the volume ratio of solution A to the mixed solution is 1.2:1), aged for 2h to obtain a modified calcium carbonate suspension, filtered, dried at 60℃ for 24h, ground to obtain modified calcium carbonate with a particle size of 300nm; A preparation method of an advertisement cloth spray drawing polyvinyl chloride film, comprising the following steps: All components are mixed, extruded and calendered to obtain the advertisement cloth spray drawing polyvinyl chloride film.

[0032] Example 2 An advertisement cloth spray drawing polyvinyl chloride film, comprising the following components by weight: polyvinyl chloride 100 parts, diisononyl phthalate 45 parts, oxidized polyethylene wax 4 parts, calcium stearate 4 parts, calcium-zinc composite stabilizer 3 parts, modified calcium carbonate 12 parts, and micro powder silica gel 1 part; A preparation method of modified calcium carbonate, comprising the following steps: Calcium chloride is added to water to obtain a calcium chloride solution with a concentration of 0.06 mol / L, and polyvinyl alcohol is added to the calcium chloride solution to obtain a mixed solution, ensuring that the concentration of polyvinyl alcohol in the mixed solution is 4g / L; Sodium carbonate is added to water to obtain a sodium carbonate solution with a concentration of 0.06 mol / L; Isooctanoic acid and dodecanedioic acid are added to anhydrous ethanol (the molar ratio of isooctanoic acid to dodecanedioic acid is 3:0.8), stirred at 50℃ and 300rpm for 30min to obtain an organic acid solution with a concentration of 0.12 mol / L; The organic acid solution is added to the sodium carbonate solution (the volume ratio of the sodium carbonate solution to the organic acid solution is 1:1.2), stirred at 600rpm for 10min to obtain solution A; Then solution A is added to the mixed solution (the volume ratio of solution A to the mixed solution is 0.8:1), aged for 4h to obtain a modified calcium carbonate suspension, filtered, dried at 70℃ for 20h, and ground to obtain modified calcium carbonate with a particle size of 300nm; A preparation method of an advertisement cloth spray drawing polyvinyl chloride film, comprising the following steps: Mixing all components, extruding, calendering, obtaining the spray-painted polyvinyl chloride film for advertising cloth.

[0033] Example 3 A spray-painted polyvinyl chloride film for advertising cloth comprises the following components by weight: polyvinyl chloride 100 parts, diisononyl phthalate 38 parts, oxidized polyethylene wax 3 parts, calcium stearate 3 parts, calcium-zinc composite stabilizer 2.5 parts, modified calcium carbonate 10 parts, micro-silica gel 0.6 parts; A method for preparing modified calcium carbonate comprises the following steps: Add calcium chloride into water to obtain a calcium chloride solution with a concentration of 0.055 mol / L, and add polyvinyl alcohol into the calcium chloride solution to obtain a mixed solution, ensuring that the concentration of polyvinyl alcohol in the mixed solution is 4 g / L; Add sodium carbonate into water to obtain a sodium carbonate solution with a concentration of 0.055 mol / L; Add isooctanoic acid and dodecanedioic acid into anhydrous ethanol (the molar ratio of isooctanoic acid and dodecanedioic acid is 3:1), stir at 45℃ and 350 rpm for 25 min to obtain an organic acid solution with a concentration of 0.1 mol / L; Add the organic acid solution into the sodium carbonate solution (the volume ratio of the sodium carbonate solution and the organic acid solution is 1:1), stir at 550 rpm for 12 min to obtain solution A; Then add solution A into the mixed solution (the volume ratio of solution A and the mixed solution is 1:1), and age for 3 h to obtain a modified calcium carbonate suspension, filter, dry at 70℃ for 20 h, and grind to obtain modified calcium carbonate with a particle size of 300 nm; A method for preparing a spray-painted polyvinyl chloride film for advertising cloth comprises the following steps: Mix all components, extrude, calender, and obtain the spray-painted polyvinyl chloride film for advertising cloth.

[0034] Example 4 The difference between this example and Example 3 is that a spray-painted polyvinyl chloride film for advertising cloth comprises the following components by weight: polyvinyl chloride 100 parts, diisononyl phthalate 38 parts, oxidized polyethylene wax 3 parts, calcium stearate 3 parts, calcium-zinc composite stabilizer 2.5 parts, modified calcium carbonate 10 parts, micro-silica gel 0.6 parts, and titanium dioxide 1 part.

[0035] Example 5 The difference between this example and Example 3 is that a spray-painted polyvinyl chloride film for advertising cloth comprises the following components by weight: polyvinyl chloride 100 parts, diisononyl phthalate 38 parts, oxidized polyethylene wax 3 parts, calcium stearate 3 parts, calcium-zinc composite stabilizer 2.5 parts, modified calcium carbonate 10 parts, micro-silica gel 0.6 parts, and nitrogen-doped titanium dioxide 1 part.

[0036] Example 6 The difference between this example and Example 3 is only that an advertising cloth spray-painting polyvinyl chloride film comprises the following components by weight: polyvinyl chloride 100 parts, diisononyl phthalate 38 parts, oxidized polyethylene wax 3 parts, calcium stearate 3 parts, calcium-zinc composite stabilizer 2.5 parts, modified calcium carbonate 10 parts, micro-powder silica gel 0.6 parts, nitrogen-doped titanium dioxide 1.5 parts.

[0037] Example 7 The difference between this example and Example 3 is only that an advertising cloth spray-painting polyvinyl chloride film comprises the following components by weight: polyvinyl chloride 100 parts, diisononyl phthalate 38 parts, oxidized polyethylene wax 3 parts, calcium stearate 3 parts, calcium-zinc composite stabilizer 2.5 parts, modified calcium carbonate 10 parts, micro-powder silica gel 0.6 parts, nitrogen-doped titanium dioxide 2.5 parts.

[0038] Example 8 The difference between this example and Example 3 is only that an advertising cloth spray-painting polyvinyl chloride film comprises the following components by weight: polyvinyl chloride 100 parts, diisononyl phthalate 38 parts, oxidized polyethylene wax 3 parts, calcium stearate 3 parts, calcium-zinc composite stabilizer 2.5 parts, modified calcium carbonate 10 parts, micro-powder silica gel 0.6 parts, nitrogen-doped titanium dioxide 3 parts.

[0039] Comparative Example 1 The difference between this example and Example 3 is only that an advertising cloth spray-painting polyvinyl chloride film comprises the following components by weight: polyvinyl chloride 100 parts, diisononyl phthalate 38 parts, oxidized polyethylene wax 3 parts, calcium stearate 3 parts, calcium-zinc composite stabilizer 2.5 parts, calcium carbonate 10 parts, micro-powder silica gel 0.6 parts.

[0040] Comparative Example 2 The difference between this example and Example 3 is only that an advertising cloth spray-painting polyvinyl chloride film comprises the following components by weight: polyvinyl chloride 100 parts, diisononyl phthalate 38 parts, oxidized polyethylene wax 3 parts, calcium stearate 3 parts, calcium-zinc composite stabilizer 2.5 parts, isooctanoic acid modified calcium carbonate 10 parts, micro-powder silica gel 0.6 parts; The preparation method of isooctanoic acid modified calcium carbonate comprises the following steps: Add calcium chloride into water to obtain a calcium chloride solution with a concentration of 0.055 mol / L, and add polyvinyl alcohol into the calcium chloride solution to obtain a mixed solution, so as to ensure that the concentration of polyvinyl alcohol in the mixed solution is 4 g / L; Add sodium carbonate into water to obtain a sodium carbonate solution with a concentration of 0.055 mol / L; Dodecanedioic acid was added into anhydrous ethanol, stirred at 45℃ and 350rpm for 25min to obtain an organic acid solution with a concentration of 0.1mol / L; The organic acid solution was added into the sodium carbonate solution (the volume ratio of the sodium carbonate solution and the organic acid solution was 1:1), stirred at 550rpm for 12min to obtain solution A; Then solution A was added into the mixed solution (the volume ratio of solution A and the mixed solution was 1:1), aged for 3h to obtain a modified calcium carbonate suspension, filtered, dried at 70℃ for 20h, ground to obtain dodecanedioic acid modified calcium carbonate with a particle size of 300nm.

[0041] Comparative Example 3 The difference between this comparative example and Example 3 is that an advertising cloth spray-painted polyvinyl chloride film was used, which comprises the following components by weight: polyvinyl chloride 100 parts, diisononyl phthalate 38 parts, oxidized polyethylene wax 3 parts, calcium stearate 3 parts, calcium-zinc composite stabilizer 2.5 parts, dodecanedioic acid modified calcium carbonate 10 parts, and micro-silica 0.6 parts; The preparation method of dodecanedioic acid modified calcium carbonate comprises the following steps: Calcium chloride was added into water to obtain a calcium chloride solution with a concentration of 0.055mol / L, and polyvinyl alcohol was added into the calcium chloride solution to obtain a mixed solution, so as to ensure that the concentration of polyvinyl alcohol in the mixed solution was 4g / L; Sodium carbonate was added into water to obtain a sodium carbonate solution with a concentration of 0.055mol / L; Dodecanedioic acid was added into anhydrous ethanol, stirred at 45℃ and 350rpm for 25min to obtain an organic acid solution with a concentration of 0.1mol / L; The organic acid solution was added into the sodium carbonate solution (the volume ratio of the sodium carbonate solution and the organic acid solution was 1:1), stirred at 550rpm for 12min to obtain solution A; Then solution A was added into the mixed solution (the volume ratio of solution A and the mixed solution was 1:1), aged for 3h to obtain a modified calcium carbonate suspension, filtered, dried at 70℃ for 20h, ground to obtain dodecanedioic acid modified calcium carbonate with a particle size of 300nm.

[0042] Experimental Example 1 The advertising cloth spray-painted polyvinyl chloride films 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 principles”, and the test samples were type 2 samples with a test speed of 50mm / min. The test results are shown in Table 1: Table 1 Performance test results of the advertising cloth use spray drawing polyvinyl chloride film prepared by examples 1~3 and comparative examples 1~3

[0043] Comparing examples 1~3 with examples 1~3, the tensile strength and tensile strain at break of the advertising cloth use spray drawing polyvinyl chloride film prepared by examples 1~3 are significantly better than those of comparative examples 1~3, which indicates that the modified calcium carbonate by isooctanoic acid and dodecanedioic acid can improve the mechanical properties of the polyvinyl chloride film.

[0044] Experimental example 2 The advertising cloth use spray drawing polyvinyl chloride film prepared by examples 3~8 is placed in a UV ultraviolet aging test box, the wavelength of ultraviolet irradiation is controlled to be 350nm, the radiation intensity is 0.71W·m -2 After 2 months of continuous ultraviolet irradiation, the tensile strength of the advertising cloth use spray drawing polyvinyl chloride film in the transverse and longitudinal directions is tested, and the test results are shown in Table 2: Table 2 Performance test results of the advertising cloth use spray drawing polyvinyl chloride film prepared by examples 3~8

[0045] 1, comparing examples 3~8, the tensile strength of the advertising cloth use spray drawing polyvinyl chloride film prepared by examples 4~8 in the transverse and longitudinal directions changes less after ultraviolet aging than that of example 3, which indicates that the introduction of titanium dioxide or nitrogen-doped titanium dioxide into the polyvinyl chloride film can improve the ultraviolet aging resistance of the polyvinyl chloride film.

[0046] 2, comparing examples 4~8, the tensile strength of the advertising cloth use spray drawing polyvinyl chloride film prepared by examples 5~8 in the transverse and longitudinal directions changes less after ultraviolet aging than that of example 4, which indicates that the introduction of nitrogen-doped titanium dioxide into the polyvinyl chloride film can further improve the ultraviolet aging resistance of the polyvinyl chloride film; the tensile strength of the advertising cloth use spray drawing polyvinyl chloride film prepared by examples 6~7 in the transverse and longitudinal directions changes less after ultraviolet aging than that of examples 5 and 8, which indicates that limiting the mass ratio of modified calcium carbonate and nitrogen-doped titanium dioxide to be 2:0.3~0.5 can further improve the ultraviolet aging resistance of the polyvinyl chloride film.

[0047] Application example The polyvinyl chloride film prepared by example 3 is applied to the advertising cloth for spray drawing operation, and finally presents a high resolution and high color saturation spray drawing effect.

[0048] The above is only a preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

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.

2. The polyvinyl chloride film for inkjet printing on advertising fabric according to claim 1, characterized in that, 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.

3. The polyvinyl chloride film for inkjet printing on advertising fabric according to claim 2, characterized in that, 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.

4. The polyvinyl chloride film for printing on advertising fabric according to claim 2, characterized in that, 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.

5. 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.

6. 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.

7. 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.

8. 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.

9. The polyvinyl chloride film for inkjet printing on advertising fabric according to claim 8, characterized in that, The mass ratio of the modified calcium carbonate to nitrogen-doped titanium dioxide is 2:0.3~0.

5.

10. 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 9, 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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