Thin film with low friction coefficient and high water contact angle and preparation method thereof

Abstract

The invention provides a thin film with a low friction coefficient and a high water contact angle and a preparation method thereof. The thin film comprises a transparent base film, a bottom coating layer and an AF layer which are sequentially attached from bottom to top. The preparation method comprises the following steps: step S001, taking materials: selecting a transparent base film made of a proper material; step S002, preparing a bottom coating solution: diluting an unsaturated functional group-containing polymer and a photoinitiator with a solvent to form a base coating solution; step S003, attaching a bottom coating layer: coating the transparent base film with the base coating solution, and carrying out heating curing, UV curing or dual curing through a drying oven to form the basecoating layer; S004, attaching an AF layer: coating the semi-finished product formed in the step S003 with an AF solution, and forming the AF layer through cross-linking curing after being heated bythe drying oven. According to the thin film with the low friction coefficient and the high water contact angle and the preparation method thereof, the defects that an existing thin film is smooth, poor in anti-fingerprint effect, complex in preparation process and not suitable for mass production are overcome.

Description

technical field

[0001] The invention relates to the field of electronic product films, in particular to a film with low friction coefficient and high water contact angle and a preparation method. Background technique

[0002] In recent years, consumers have higher and higher requirements for electronic products, not only pursuing higher performance, more stable and better performance, but also putting forward requirements for products such as waterproof, anti-fingerprint and high smoothness. In order to increase consumers' good experience and satisfaction with electronic products such as mobile phones, high smoothness and anti-fingerprint effect on the surface of electronic products are essential requirements. At present, there are two main implementation schemes for films with high smoothness and anti-fingerprint effects.

[0003] The first solution adopts the method of AF coating, which is to spray a layer of AF spray on the cleaned touch screen, and form an AF film after...

Examples

Embodiment 1

[0029] refer to figure 1 , this embodiment provides a film with a low coefficient of friction and a high water contact angle, including a transparent base film 1 , a primer layer 2 and an AF layer 3 laminated sequentially from bottom to top.

[0030] The material of the transparent base film 1 can be PET (polyterephthalic acid plastics), TAC (triacetate film), PC (polycarbonate), PE (polyethylene), PP (polypropylene), PI (polyamide imine), PMMA (polymethyl methacrylate), TPU (thermoplastic polyurethane elastomer) or PEN (polyethylene phthalate), the thickness of the transparent base film 1 is 20 μm to 500 μm, and the preferred thickness is 50 μm -200 μm. The AF layer 3 is a coating formed by curing the AF liquid; the main component of the AF liquid is a fluorine-containing compound, which can be purchased directly from the market; the coating thickness of the AF layer 3 is between 5nm and 100nm, and the preferred thickness is 10nm- 80nm.

[0031]The undercoat layer 2 is for...

Embodiment 2

[0039] The difference between this embodiment and Embodiment 1 is that: in terms of mass percentage, the raw material composition of the primer liquid can also include 1% to 5% of additives, and the additives include nano-silica, silicon-containing additives, anti-corrosion One or a combination of static agents. In this embodiment, nano silicon dioxide is also added to the primer solution.

[0040] The difference between the method for preparing the above-mentioned film in this example and Example 1 is that in step S002, optional components are added when configuring the primer solution, and the optional components include nano-silicon dioxide, silicon-containing additives, and antistatic agents. one or a combination of several. In this embodiment, the additive component is nano silicon dioxide.

Embodiment 3

[0042] refer to Figure 2 to Figure 4 , the difference between this embodiment and embodiment 1 is: a stabilizing layer 4 is bonded between the primer layer 2 and the AF layer 3, and the stabilizing layer 4 is formed by curing a silane solution, and the coating thickness of the stabilizing layer 4 is 5nm~150nm , the preferred thickness is 10nm-100nm. In terms of mass percentage, the raw material composition of the silane solution includes: silane coupling agent 0.1% to 2% and solvent, the silane coupling agent includes γ-aminopropyltriethoxysilane, γ-glycidyl etheroxypropyl Trimethoxysilane, γ-(methacryloyloxy)propyltrimethoxysilane, N-(β-aminoethyl)-γ-aminopropylmethyldimethoxysilane, γ-glycidyl ether One or more combinations of oxypropylmethyldiethoxysilane, vinyltriethoxysilane, vinyltrimethoxysilane, vinyltris(β-methoxyethoxy)silane, The solvent includes one or more mixtures of ethanol, methanol, isopropanol and acetone.

[0043] refer to Figure 5 The difference betwe...

technical field

[0001] The invention relates to the field of electronic product films, in particular to a film with low friction coefficient and high water contact angle and a preparation method. Background technique

[0002] In recent years, consumers have higher and higher requirements for electronic products, not only pursuing higher performance, more stable and better performance, but also putting forward requirements for products such as waterproof, anti-fingerprint and high smoothness. In order to increase consumers' good experience and satisfaction with electronic products such as mobile phones, high smoothness and anti-fingerprint effect on the surface of electronic products are essential requirements. At present, there are two main implementation schemes for films with high smoothness and anti-fingerprint effects.

[0003] The first solution adopts the method of AF coating, which is to spray a layer of AF spray on the cleaned touch screen, and form an AF film after...

Examples

Embodiment 1

[0029] refer to figure 1 , this embodiment provides a film with a low coefficient of friction and a high water contact angle, including a transparent base film 1 , a primer layer 2 and an AF layer 3 laminated sequentially from bottom to top.

[0030] The material of the transparent base film 1 can be PET (polyterephthalic acid plastics), TAC (triacetate film), PC (polycarbonate), PE (polyethylene), PP (polypropylene), PI (polyamide imine), PMMA (polymethyl methacrylate), TPU (thermoplastic polyurethane elastomer) or PEN (polyethylene phthalate), the thickness of the transparent base film 1 is 20 μm to 500 μm, and the preferred thickness is 50 μm -200 μm. The AF layer 3 is a coating formed by curing the AF liquid; the main component of the AF liquid is a fluorine-containing compound, which can be purchased directly from the market; the coating thickness of the AF layer 3 is between 5nm and 100nm, and the preferred thickness is 10nm- 80nm.

[0031]The undercoat layer 2 is for...

Embodiment 2

[0039] The difference between this embodiment and Embodiment 1 is that: in terms of mass percentage, the raw material composition of the primer liquid can also include 1% to 5% of additives, and the additives include nano-silica, silicon-containing additives, anti-corrosion One or a combination of static agents. In this embodiment, nano silicon dioxide is also added to the primer solution.

[0040] The difference between the method for preparing the above-mentioned film in this example and Example 1 is that in step S002, optional components are added when configuring the primer solution, and the optional components include nano-silicon dioxide, silicon-containing additives, and antistatic agents. one or a combination of several. In this embodiment, the additive component is nano silicon dioxide.

Embodiment 3

[0042] refer to Figure 2 to Figure 4 , the difference between this embodiment and embodiment 1 is: a stabilizing layer 4 is bonded between the primer layer 2 and the AF layer 3, and the stabilizing layer 4 is formed by curing a silane solution, and the coating thickness of the stabilizing layer 4 is 5nm~150nm , the preferred thickness is 10nm-100nm. In terms of mass percentage, the raw material composition of the silane solution includes: silane coupling agent 0.1% to 2% and solvent, the silane coupling agent includes γ-aminopropyltriethoxysilane, γ-glycidyl etheroxypropyl Trimethoxysilane, γ-(methacryloyloxy)propyltrimethoxysilane, N-(β-aminoethyl)-γ-aminopropylmethyldimethoxysilane, γ-glycidyl ether One or more combinations of oxypropylmethyldiethoxysilane, vinyltriethoxysilane, vinyltrimethoxysilane, vinyltris(β-methoxyethoxy)silane, The solvent includes one or more mixtures of ethanol, methanol, isopropanol and acetone.

[0043] refer to Figure 5 The difference betwe...

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