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Surface superhydrophobic TPU (thermoplastic polyurethane) film and preparation method thereof

A super-hydrophobic and thin-film technology, which is applied in the field of bio-based degradable materials, can solve the problems of unfavorable industrial production, complex methods, and inapplicability of bio-based materials, etc., and achieve good application prospects, simple preparation methods, and good super-hydrophobic properties.

Inactive Publication Date: 2018-05-15
DONGGUAN XIONGLIN NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] CN105399917A discloses a silicone-modified thermoplastic polyurethane elastomer and a preparation method thereof. The elastomer is composed of the following components in parts by weight: 20-60 parts of macromolecular diols, hydroxyalkyl groups 2-10 parts of blocked polydimethylsiloxane, 10-20 parts of diisocyanate, 2-8 parts of small molecule chain extender, 0.1-0.5 part of catalyst, 0.1-0.5 part of antioxidant, 0.1-0.5 part of ultraviolet absorber parts; this TPU material solves the problems of high and low temperature resistance, hydrophobicity, etc., but in fact, its hydrophobic performance still needs to be strengthened and needs to be improved; CN103709429A discloses a method for hydrophobically modifying the polymer surface. After the surface cleaning treatment, the surface of the polymer is subjected to ultraviolet light oxidation treatment, and then the surface of the polymer after the ultraviolet light oxidation treatment is modified by soaking method or vapor deposition method, but this method is relatively complicated and is not suitable for bio-based Application in materials, not conducive to industrial production
[0006] At present, although TPU is widely used, its hydrophobic performance still needs to be strengthened.

Method used

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  • Surface superhydrophobic TPU (thermoplastic polyurethane) film and preparation method thereof
  • Surface superhydrophobic TPU (thermoplastic polyurethane) film and preparation method thereof
  • Surface superhydrophobic TPU (thermoplastic polyurethane) film and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0044] The TPU film prepared in this embodiment includes the following components by weight:

[0045]

[0046](1) Add hydroxyl-terminated hyperbranched silicon oxide, diisocyanate (wherein the mass ratio of toluene diisocyanate to hexamethylene diisocyanate is 6:1), polyethylene glycol 2000, ethylene glycol, stannous octoate and antioxidant 1010 In the container, under the stirring speed of 150r / min, vacuum dehydration at 80°C under the pressure of -0.2kPa, and then react at 130°C for 5h;

[0047] (2) Then use the twin-screw extruder to extrude the product obtained in step (1), wherein the temperature of the feeding section of the twin-screw extruder is 115°C, the temperature of the mixing section is 145°C, and the temperature of the extrusion section is 175°C , the head temperature is 155°C, and a super-hydrophobic TPU film is obtained after extrusion.

Embodiment 2

[0049] The TPU film prepared in this embodiment includes the following components by weight:

[0050]

[0051]

[0052] (1) Hydroxyl-terminated hyperbranched silicon dioxide, diisocyanate (the mass ratio of toluene diisocyanate to hexamethylene diisocyanate is 5:1), polyethylene glycol 400, 1,3-propylene glycol, dibutyltin dioctoate and anti- Oxygen agent 264 was added to the container, under the stirring speed of 200r / min, vacuum dehydration at 90°C under the pressure of -0.3kPa, and then reacted at 140°C for 3h;

[0053] (2) Then use a twin-screw extruder to extrude the product obtained in step (1), wherein the temperature of the feeding section of the twin-screw extruder is 110°C, the temperature of the mixing section is 140°C, and the temperature of the extrusion section is 170°C , the head temperature is 150°C, and a super-hydrophobic TPU film is obtained after extrusion.

Embodiment 3

[0055] The TPU film prepared in this embodiment includes the following components by weight:

[0056]

[0057] (1) Hydroxyl-terminated hyperbranched silicon oxide, diisocyanate (the mass ratio of toluene diisocyanate to hexamethylene diisocyanate is 8:1), polyethylene glycol 5000, 1,4-butanediol, dibutyl laurate Add tin and antioxidant TPP into the container, under the stirring speed of 100r / min, vacuum dehydrate at 70°C under the pressure of -0.1kPa, and then react at 120°C for 8h;

[0058] (2) Then use a twin-screw extruder to extrude the product obtained in step (1), wherein the temperature of the feeding section of the twin-screw extruder is 120°C, the temperature of the mixing section is 150°C, and the temperature of the extrusion section is 180°C , the head temperature is 160°C, and a TPU film with a superhydrophobic surface is obtained after extrusion.

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Abstract

The invention provides a surface superhydrophobic TPU (thermoplastic polyurethane) film and a preparation method thereof. The surface superhydrophobic TPU film comprises the following preparation rawmaterials in parts by weight: 50 to 70 parts of end hydroxyl hyperbranched siloxane, 30 to 40 parts of diisocyanate, 5 to 10 parts of polyethylene glycol, 2 to 8 parts of chain extender, 1 to 5 partsof catalyst and 1 to 6 parts of anti-oxidant. The surface superhydrophobic TPU film prepared by the preparation method has high superhydrophobic property and also has certain toughness and moderate hardness; and the preparation method is simple and easy in production and has good application prospect.

Description

technical field [0001] The invention belongs to the field of bio-based degradable materials, and relates to a super-hydrophobic TPU film and a preparation method thereof. Background technique [0002] The name of TPU is thermoplastic polyurethane elastomer rubber. It is a new type of organic polymer synthetic material, which can replace rubber or soft polyvinyl chloride material. Its good wear resistance and resilience are better than ordinary polyurethane, and its aging resistance is excellent. For rubber, it can be said that TPU is the most ideal material to replace PVC and PU, and is known as a new polymer material internationally. [0003] However, TPU also has defects, such as poor water resistance of TPU, which limits the application of TPU in a wider range. [0004] Superhydrophobic material is a new type of material, it can clean the places that need to be clean by itself, and it can also be placed on the metal surface to prevent water corrosion and rust. Super-hyd...

Claims

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Application Information

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IPC IPC(8): C08L75/08C08J5/18C08G18/66C08G18/61C08G18/48C08G18/32
CPCC08G18/3206C08G18/3228C08G18/4825C08G18/4833C08G18/61C08G18/6674C08G18/6685C08J5/18C08J2375/08
Inventor 何建雄王一良杨博
Owner DONGGUAN XIONGLIN NEW MATERIAL TECH
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