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TPU film with high hydrophobic angle, and preparation method thereof

A film and vacuum dehydration technology, applied in the field of TPU film and its preparation, high hydrophobic angle TPU film and its preparation, can solve the problems of small hydrophobic angle and poor hydrophobic performance, and achieve easy rolling off, good hydrophobic performance, and hydrophobic performance. excellent effect

Active Publication Date: 2020-02-25
DONGGUAN XIONGLIN NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a TPU film and its preparation method, especially to provide a high hydrophobic angle TPU film and its preparation method, to solve the problem that the existing TPU film has a small hydrophobic angle and poor hydrophobic performance. bad question

Method used

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  • TPU film with high hydrophobic angle, and preparation method thereof
  • TPU film with high hydrophobic angle, and preparation method thereof
  • TPU film with high hydrophobic angle, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The preparation raw material of the TPU film that the present embodiment provides comprises the following components by weight:

[0047]

[0048] Preparation:

[0049] (1) Add toluene diisocyanate and polyethylene glycol adipate diol into the container, and under the condition of stirring at a speed of 160r / min, vacuum dehydrate at 65°C for 2 hours;

[0050] (2) Add 1,2-propanediol and dibutyltin dioctoate to step (1) and mix and react at 65°C for 18 hours;

[0051] (3) Add hexafluorobutyl methacrylate, octadecyl acrylate and polyvinylidene fluoride to the mixture after the reaction in step (2), stir and mix at 68°C for 18 hours, and then add to the twin-screw extruder The TPU film was obtained by extrusion molding, wherein the temperature of the feeding section of the twin-screw extruder was 115°C, the temperature of the mixing section was 150°C, the temperature of the extrusion section was 170°C, and the temperature of the head was 155°C.

Embodiment 2

[0053] The preparation raw material of the TPU film that the present embodiment provides comprises the following components by weight:

[0054]

[0055] Preparation:

[0056] (1) Add toluene diisocyanate and polyethylene adipate diethylene glycol diol into the container, and under the condition of stirring at a speed of 160r / min, vacuum dehydrate at 65°C for 2 hours;

[0057] (2) Add 1,2-propanediol and stannous octoate to step (1) and mix and react at 65°C for 18 hours;

[0058] (3) Add hexafluorobutyl methacrylate, octadecyl acrylate and polyvinylidene fluoride to the mixture after the reaction in step (2), stir and mix at 68°C for 18 hours, and then add to the twin-screw extruder The TPU film was obtained by extrusion molding, wherein the temperature of the feeding section of the twin-screw extruder was 115°C, the temperature of the mixing section was 150°C, the temperature of the extrusion section was 170°C, and the temperature of the head was 155°C.

Embodiment 3

[0060] The preparation raw material of the TPU film that the present embodiment provides comprises the following components by weight:

[0061]

[0062] Preparation:

[0063] (1) Add toluene diisocyanate and polyethylene adipate propylene glycol ester diol into the container, and under the condition of stirring at a speed of 160r / min, vacuum dehydrate at 65°C for 2 hours;

[0064] (2) Add ethylene glycol and dibutyltin diacetate to step (1) and mix and react at 65°C for 18 hours;

[0065] (3) Add hexafluorobutyl methacrylate, octadecyl acrylate and polyvinylidene fluoride to the mixture after the reaction in step (2), stir and mix at 68°C for 18 hours, and then add to the twin-screw extruder The TPU film was obtained by extrusion molding, wherein the temperature of the feeding section of the twin-screw extruder was 115°C, the temperature of the mixing section was 150°C, the temperature of the extrusion section was 170°C, and the temperature of the head was 155°C.

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Abstract

The invention provides a TPU film with a high hydrophobic angle, and a preparation method thereof. The TPU film is prepared from, by weight, 30-50 parts of toluene diisocynate, 20-40 parts of polyester polyol, 4-6 parts of hexafluorobutyl methacrylate, 1-2 parts of octadecyl acrylate, 5-10 parts of polyvinylidene fluoride, 3-8 parts of a chain extender and 1-3 parts of a catalyst. The hexafluorobutyl methacrylate and octadecyl acrylate are used cooperatively to make fluorine-containing groups regularly arranged on the polymerization surface, a stable film is formed after a reaction, and the formed coating layer has low surface free energy; and the polyvinylidene fluoride with good insulativity is mixed to make water drops roll off easily on the surface of the film, and is matched with thefluorine-containing groups to improve the hydrophobic angle of the film, so the hydrophobic angle can reach 121-124 DEG, and the TPU film has an excellent hydrophobic performance and broad applicationprospect.

Description

technical field [0001] The invention belongs to the field of polymer materials, and relates to a TPU film and a preparation method thereof, in particular to a high hydrophobic angle TPU film and a preparation method thereof. Background technique [0002] TPU (Thermoplastic polyurethanes), thermoplastic TPU elastomer, due to its good elasticity, good physical properties, and various mechanical strengths, it is widely used in processing methods such as injection, extrusion, calendering, and dissolved into solution resins. It is a plastic processing It is a plastic material often used by the industry, and its products cover a range of industrial applications and civilian necessities. [0003] TPU film is a film made by special processes such as calendering, casting, film blowing and coating on the basis of TPU pellets. In recent years, due to the continuous development of new products, new opportunities have been created for the plastic processing industry to create low-cost, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/06C08L33/16C08L27/16C08J5/18C08G18/10C08G18/66C08G18/32
CPCC08G18/10C08G18/664C08J5/18C08J2375/06C08J2427/16C08J2433/16C08G18/3206
Inventor 王一良何建雄杨博
Owner DONGGUAN XIONGLIN NEW MATERIAL TECH
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