Matte skin-feeling abrasion-resistant PVC film and preparation method thereof

Abstract

The present invention discloses a matte skin-feeling rub-resistant PVC film and a preparation method thereof, wherein the PVC film comprises a water-based surface treatment layer, a PVC layer, an adhesive layer and a bottom layer which are sequentially arranged; the PVC layer comprises the following raw materials in parts by weight: 100 parts of PVC resin, 40-60 parts of plasticizer, 1-5 parts of stabilizer, and 5-15 parts of filler; the filler is composed of boron nitride nanospheres and silicon dioxide nanospheres; the preparation method steps of the PVC film are as follows: S1: configuration of a water-based surface treatment layer and a PVC layer; S2: coating the PVC layer on a release paper and drying the same; S3: coating an adhesive layer on one side of the PVC layer away from the release paper and laminating the bottom layer; S4: peeling off the release paper, and coating a water-based surface treatment layer on one side of the PVC layer away from the adhesive layer, to obtain a matte skin-feeling rub-resistant PVC film. The PVC film prepared by the present invention has excellent rub resistance, and can prevent the migration of the plasticizer, thereby improving the service life of the PVC film.

Description

Technical Field

[0001] The invention relates to the technical field of PVC films, and in particular to a matte skin-feeling abrasion-resistant PVC film and a preparation method thereof. Background Art

[0002] PVC (polyvinyl chloride) has a wide application market due to its low price. Soft PVC and hard PVC can be obtained by adding different amounts of additives to PVC. Existing PVC basically adds plasticizers, but plasticizers easily migrate to the surface, thus affecting the service life of the PVC film. In addition, the abrasion resistance of existing PVC films needs to be further improved. Summary of the invention

[0003] Based on the technical problems existing in the background technology, the present invention proposes a matte skin-feeling abrasion-resistant PVC film and a preparation method thereof. The prepared PVC film has excellent abrasion resistance and can prevent the migration of plasticizers, thereby increasing the service life of the PVC film.

[0004] The matte skin-feeling and abrasion-resistant PVC film provided by the present invention comprises a water-based surface treatment layer, a PVC layer, an adhesive layer and a bottom layer arranged in sequence;

[0005] The PVC layer comprises the following raw materials in parts by weight: 100 parts of PVC resin, 40-60 parts of plasticizer, 1-5 parts of stabilizer, and 5-15 parts of filler.

[0006] Preferably, the filler is composed of boron nitride nanospheres and silicon dioxide nanospheres in a mass ratio of 3:1-9.

[0007] Preferably, the plasticizer is one or more of dibutyl phthalate, triethyl acetyl citrate and dioctyl phthalate.

[0008] Preferably, the stabilizer is a calcium zinc stabilizer.

[0009] Preferably, the aqueous surface treatment layer comprises the following raw materials in parts by weight: 40-80 parts of acrylate-modified aqueous polyurethane, 30-50 parts of modified silica-crosslinked aqueous polyurethane, 5-15 parts of methacryloxypropyl cage-type silsesquioxane, 1-10 parts of crosslinking agent, and 1-5 parts of crosslinking aid.

[0010] Preferably, the crosslinking agent is a polycarbodiimide crosslinking agent.

[0011] Preferably, the cross-linking auxiliary agent is composed of glucose amide polysiloxane and polyether modified polysiloxane in a mass ratio of 2:1-4.

[0012] Preferably, the adhesive layer is a polysiloxane-modified waterborne polyurethane layer.

[0013] The method for preparing the above-mentioned matte skin-feeling and abrasion-resistant PVC film proposed by the present invention comprises the following steps:

[0014] S1: water-based surface treatment layer and PVC layer configuration;

[0015] S2: coating the PVC layer on the release paper and drying it;

[0016] S3: Coat the adhesive layer on the side of the PVC layer away from the release paper and adhere it to the bottom layer;

[0017] S4: Peel off the release paper and apply a water-based surface treatment layer on the side of the PVC layer away from the adhesive layer to obtain a matte skin-feeling and abrasion-resistant PVC film.

[0018] Preferably, the drying temperature in S2 is 96-110°C.

[0019] Beneficial technical effects of the present invention:

[0020] The present invention significantly improves the abrasion resistance of the PVC film by filling boron nitride nanospheres and silicon dioxide nanospheres in the PVC layer; the present invention gives the PVC film a matte surface and good skin feel by coating a water-based surface treatment layer on the surface of the PVC film, thereby improving the comfort of users; in addition, by adding a cross-linking auxiliary agent in the water-based surface treatment layer, the effect of preventing the escape of the plasticizer is significantly improved, and the cross-linking auxiliary agent of the present invention is composed of glucamide polysiloxane and polyether modified polysiloxane, which has a synergistic promoting effect in preventing the escape of the plasticizer; the modified silicon dioxide cross-linked waterborne polyurethane added in the water-based surface treatment layer can further improve the abrasion resistance of the PVC film. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the matte skin-feeling and abrasion-resistant PVC film proposed in the present invention.

[0022] In the figure: 1-water-based surface treatment layer, 2-PVC layer, 3-adhesive layer, 4-bottom layer. DETAILED DESCRIPTION

[0023] Example 1

[0024] The matte skin-feeling and abrasion-resistant PVC film provided by the present invention comprises a water-based surface treatment layer, a PVC layer, an adhesive layer and a bottom layer arranged in sequence;

[0025] The PVC layer contains the following raw materials in parts by weight: 100 parts of PVC resin, 50 parts of plasticizer, 3 parts of stabilizer, and 10 parts of filler.

[0026] The filler is composed of boron nitride nanospheres and silicon dioxide nanospheres in a mass ratio of 1:1; the plasticizer is dibutyl phthalate; and the stabilizer is a calcium zinc stabilizer.

[0027] The water-based surface treatment layer comprises the following raw materials in parts by weight: 60 parts of acrylate-modified water-based polyurethane, 40 parts of modified silica-crosslinked water-based polyurethane, 10 parts of methacryloxypropyl cage-type silsesquioxane, 5 parts of crosslinking agent, and 3 parts of crosslinking auxiliary agent.

[0028] The cross-linking agent is a polycarbodiimide cross-linking agent; the cross-linking auxiliary agent is composed of glucose amide polysiloxane and polyether modified polysiloxane in a mass ratio of 1:1.

[0029] The adhesive layer is a polysiloxane-modified waterborne polyurethane layer.

[0030] The method for preparing the above-mentioned matte skin-feeling and abrasion-resistant PVC film proposed by the present invention comprises the following steps:

[0031] S1: water-based surface treatment layer and PVC layer configuration;

[0032] S2: coating the PVC layer on the release paper and drying it at 103°C;

[0033] S3: Coat the adhesive layer on the side of the PVC layer away from the release paper and adhere it to the bottom layer;

[0034] S4: Peel off the release paper and apply a water-based surface treatment layer on the side of the PVC layer away from the adhesive layer to obtain a matte skin-feeling and abrasion-resistant PVC film.

[0035] Example 2

[0036] The matte skin-feeling and abrasion-resistant PVC film provided by the present invention comprises a water-based surface treatment layer, a PVC layer, an adhesive layer and a bottom layer arranged in sequence;

[0037] The PVC layer contains the following raw materials in parts by weight: 100 parts of PVC resin, 40 parts of plasticizer, 1 part of stabilizer, and 5 parts of filler.

[0038] The filler is composed of boron nitride nanospheres and silicon dioxide nanospheres in a mass ratio of 3:1; the plasticizer is acetyl citrate triethyl; and the stabilizer is calcium zinc stabilizer.

[0039] The water-based surface treatment layer comprises the following raw materials in parts by weight: 40 parts of acrylate-modified water-based polyurethane, 30 parts of modified silica-crosslinked water-based polyurethane, 5 parts of methacryloxypropyl cage-type silsesquioxane, 1 part of crosslinking agent, and 1 part of crosslinking auxiliary agent.

[0040] The cross-linking agent is a polycarbodiimide cross-linking agent; the cross-linking auxiliary agent is composed of glucose amide polysiloxane and polyether modified polysiloxane in a mass ratio of 2:1.

[0041] The adhesive layer is a polysiloxane-modified waterborne polyurethane layer.

[0042] The method for preparing the above-mentioned matte skin-feeling and abrasion-resistant PVC film proposed by the present invention comprises the following steps:

[0043] S1: water-based surface treatment layer and PVC layer configuration;

[0044] S2: coating the PVC layer on the release paper and drying it at 96°C;

[0045] S3: Coat the adhesive layer on the side of the PVC layer away from the release paper and adhere it to the bottom layer;

[0046] S4: Peel off the release paper and apply a water-based surface treatment layer on the side of the PVC layer away from the adhesive layer to obtain a matte skin-feeling and abrasion-resistant PVC film.

[0047] Example 3

[0048] The matte skin-feeling and abrasion-resistant PVC film provided by the present invention comprises a water-based surface treatment layer, a PVC layer, an adhesive layer and a bottom layer arranged in sequence;

[0049] The PVC layer contains the following raw materials in parts by weight: 100 parts of PVC resin, 60 parts of plasticizer, 5 parts of stabilizer, and 15 parts of filler.

[0050] The filler is composed of boron nitride nanospheres and silicon dioxide nanospheres in a mass ratio of 1:3; the plasticizer is dioctyl phthalate; and the stabilizer is a calcium zinc stabilizer.

[0051] The water-based surface treatment layer comprises the following raw materials in parts by weight: 80 parts of acrylate-modified water-based polyurethane, 50 parts of modified silica-crosslinked water-based polyurethane, 15 parts of methacryloxypropyl cage-type silsesquioxane, 10 parts of a crosslinking agent, and 5 parts of a crosslinking aid.

[0052] The cross-linking agent is a polycarbodiimide cross-linking agent; the cross-linking auxiliary agent is composed of glucose amide polysiloxane and polyether modified polysiloxane in a mass ratio of 1:2.

[0053] The adhesive layer is a polysiloxane-modified waterborne polyurethane layer.

[0054] The method for preparing the above-mentioned matte skin-feeling and abrasion-resistant PVC film proposed by the present invention comprises the following steps:

[0055] S1: water-based surface treatment layer and PVC layer configuration;

[0056] S2: coating the PVC layer on the release paper and drying it at 110°C;

[0057] S3: Coat the adhesive layer on the side of the PVC layer away from the release paper and adhere it to the bottom layer;

[0058] S4: Peel off the release paper and apply a water-based surface treatment layer on the side of the PVC layer away from the adhesive layer to obtain a matte skin-feeling and abrasion-resistant PVC film.

[0059] Comparative Example 1

[0060] The filler in this solution is boron nitride nanospheres, and the other conditions are the same as those in Example 1.

[0061] Comparative Example 2

[0062] The filler in this solution is silicon dioxide nanospheres, and the other conditions are the same as those in Example 1.

[0063] Comparative Example 3

[0064] The crosslinking aid in this solution is glucose amide polysiloxane, and the other conditions are the same as those in Example 1.

[0065] Comparative Example 4

[0066] The crosslinking aid in this solution is polyether-modified polysiloxane, and the other conditions are the same as those in Example 1.

[0067] The anti-scratch performance of Example 1 and Comparative Examples 1 and 2 was tested, and the test results are shown in Table 1. The test method is based on the PV3952 test ΔL.

[0068] Table 1 Anti-scratch performance test results

[0069]

[0070]

[0071] It can be seen from the test results in Table 1 that the △L of the PVC film prepared in Example 1 according to the PV3952 test is only 3.1, which is much lower than the test results of Comparative Examples 1 and 2. This shows that the present invention significantly improves the abrasion resistance of the PVC film by filling boron nitride nanospheres and silicon dioxide nanospheres in the PVC layer, and the boron nitride nanospheres and silicon dioxide nanospheres have a synergistic promoting effect in improving the abrasion resistance of the PVC film.

[0072] The performance of preventing plasticizer from escaping of Example 1 and Comparative Examples 1 and 2 was tested, and the test results are shown in Table 2. The test method is: weigh 20g of sample and soak it in oleic acid at room temperature for 120h, then take out the sample and perform high performance liquid chromatography test on the filtered soaking liquid, and calculate the escape amount of plasticizer according to the standard curve.

[0073] Table 2 Test results of anti-plasticizer escape performance

[0074] Group Plasticizer escape amount (%) Example 1 4.8 Comparative Example 3 13.4 Comparative Example 4 12.3

[0075] It can be seen from the test results in Table 2 that the present invention significantly improves the effect of preventing plasticizer escape by adding a crosslinking aid to the aqueous surface treatment layer, and the crosslinking aid of the present invention is composed of glucamide polysiloxane and polyether modified polysiloxane, which has a synergistic promoting effect in preventing plasticizer escape.

[0076] The above are only 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 in the protection scope of the present invention.

Claims

1. Matte skin-feeling and abrasion-resistant PVC film, characterized in that: It includes a water-based surface treatment layer, a PVC layer, an adhesive layer and a bottom layer which are arranged in sequence; The PVC layer comprises the following raw materials in parts by weight: 100 parts of PVC resin, 40-60 parts of plasticizer, 1-5 parts of stabilizer, and 5-15 parts of filler; The filler is composed of boron nitride nanospheres and silicon dioxide nanospheres in a mass ratio of 3:1-9; The water-based surface treatment layer comprises the following raw materials in parts by weight: 40-80 parts of acrylate-modified water-based polyurethane, 30-50 parts of modified silica-crosslinked water-based polyurethane, 5-15 parts of methacryloxypropyl cage-type silsesquioxane, 1-10 parts of a crosslinking agent, and 1-5 parts of a crosslinking aid; The cross-linking auxiliary agent is composed of glucose amide polysiloxane and polyether modified polysiloxane in a mass ratio of 2:1-4.

2. The matte skin-feeling abrasion-resistant PVC film according to claim 1, characterized in that: The plasticizer is one or more of dibutyl phthalate, triethyl acetyl citrate and dioctyl phthalate.

3. The matte skin-feeling abrasion-resistant PVC film according to claim 1, characterized in that: The stabilizer is a calcium zinc stabilizer.

4. The matte skin-feeling abrasion-resistant PVC film according to claim 1, characterized in that: The crosslinking agent is a polycarbodiimide crosslinking agent.

5. The matte skin-feeling abrasion-resistant PVC film according to claim 1, characterized in that: The adhesive layer is a polysiloxane-modified waterborne polyurethane layer.

6. The method for preparing a matte skin-feeling and abrasion-resistant PVC film according to any one of claims 1 to 5, characterized in that: The steps are as follows: S1: water-based surface treatment layer and PVC layer configuration; S2: coating the PVC layer on the release paper and drying it; S3: Coat the adhesive layer on the side of the PVC layer away from the release paper and adhere it to the bottom layer; S4: Peel off the release paper and apply a water-based surface treatment layer on the side of the PVC layer away from the adhesive layer to obtain a matte skin-feeling and abrasion-resistant PVC film.

7. The method for preparing the matte skin-feeling and abrasion-resistant PVC film according to claim 6, characterized in that: The drying temperature in S2 is 96-110°C.

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