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TPU (thermoplastic polyurethanes) film and preparation method thereof

A film, UV770 technology, applied in the field of TPU film and its preparation, can solve the problems of poor gas permeability of TPU film, can not be used as car seat cushions, etc., achieve the effect of small difference in mechanical properties, improved plasticizing effect, and uniform thickness

Inactive Publication Date: 2016-08-24
李英
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the TPU film prepared by this method has poor air permeability and cannot be used as a car seat cushion.

Method used

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  • TPU (thermoplastic polyurethanes) film and preparation method thereof

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preparation example Construction

[0034] Correspondingly, the present invention also provides a kind of preparation method of TPU film, comprises the following steps:

[0035] (1) Crush TPU resin and PHA resin into 30-50 mesh powder at 10°C-15°C;

[0036] (2) 88-94 parts by weight powdered TPU resin, 4-8 parts by weight powdered PHA resin, 1-2 parts by weight anti-hydrolysis agent, 0.5-1 parts by weight light stabilizer, 0.5-1 parts by weight antioxidant Add to a high-speed mixer and mix well;

[0037] (3) The mixed material is plasticized by a planetary extruder, devolatilized, five-roll calendered, drawn off, embossed, and cooled to obtain a TPU film.

[0038] The temperature of the planetary extruder is: 120-145°C for the first stage and 150-155°C for the second stage.

[0039] The devolatilization device is installed in the second stage of the planetary extruder, which can effectively eliminate the volatile matter in the plasticizing process.

[0040] The five-roll calender adopts F-type five-roll calen...

Embodiment 1

[0051] Weigh various raw materials according to the ratio of mass and number stated below

[0052] 88 parts by weight of TPU resin, 8 parts by weight of PHA resin, 2 parts by weight of anti-hydrolysis polycarbodiimide, 1 part by weight of light stabilizer UV531, and 1 part by weight of antioxidant I1010.

[0053] Described a kind of TPU film preparation method is as follows:

[0054] (1) Crush TPU resin and PHA resin into 30-50 mesh powder at 10°C-15°C;

[0055] (2) 88 parts by weight of powdery TPU resin, 8 parts by weight of powdery PHA resin, 2 parts by weight of anti-hydrolysis agent, 1 part by weight

[0056] Parts by weight of light stabilizer and 1 part by weight of antioxidant are added to a high-speed mixer and mixed uniformly;

[0057] (3) The mixed material is plasticized by planetary extruder, devolatilized, five-roll calendered, drawn off, embossed and cooled to obtain TPU

[0058] film.

[0059] The temperature of the planetary extruder is: 120°C for the firs...

Embodiment 2

[0063] Weigh various raw materials according to the ratio of mass and number stated below

[0064] 94 parts by weight of TPU resin, 4 parts by weight of PHA resin, 1 part by weight of anti-hydrolysis agent polycarbodiimide, 0.5 part by weight of light stabilizer UV531, and 0.5 part by weight of antioxidant I1010.

[0065] Described a kind of TPU film preparation method is as follows:

[0066] (1) Crush TPU resin and PHA resin into 30-50 mesh powder at 10°C-15°C;

[0067] (2) 94 parts by weight of powdery TPU resin, 4 parts by weight of powdery PHA resin, 1 part by weight of anti-hydrolysis agent, 0.5 part by weight of light stabilizer, and 0.5 part by weight of antioxidant are added to a high-speed mixer and mixed uniformly;

[0068] (3) The mixed material is plasticized by a planetary extruder, devolatilized, five-roll calendered, drawn off, embossed, and cooled to obtain a TPU film.

[0069] The temperature of the planetary extruder is: 145°C for the first stage and 155°C ...

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Abstract

The invention provides a TPU (thermoplastic polyurethanes) film and a preparation method thereof. The TPU film is prepared from TPU resin, PHA (polyhydroxyalkanoate) resin, a hydrolysis-resistant agent, a light stabilizer and an antioxidant by a calendering technology. The TPU film used for producing automobile seat cushions instead of cattlehide has the advantages of good breathability, high resistance to tear, uniformity in thickness, fewer fisheyes and the like. The preparation method is beneficial to large-scale production and reduction of TPU film cost.

Description

technical field [0001] The invention belongs to the technical field of thermoplastic elastomer films, and more specifically relates to a TPU film and a preparation method thereof. Background technique [0002] Car seat cushion is an important part of the car interior, and it has attracted people's attention because it is directly related to the comfort of the car. At present, the main cushion materials are cowhide, PVC leather, and PU leather. Among them, cowhide is the most popular because it is soft, breathable and comfortable. However, due to the high price of cowhide, the wear resistance and scratch resistance are insufficient, resulting in a short service life. [0003] TPU is a kind of thermoplastic polyurethane elastomer. TPU is the abbreviation of thermoplastic polyurethane polymer material. It is formed by addition polymerization of polyether or polyester diol, diisocyanate and small molecular weight chain extender. It has the characteristics of high modulus, high...

Claims

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Application Information

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IPC IPC(8): C08L75/08C08L67/04C08L79/00C08L51/00B29D7/01
CPCC08L75/08B29D7/01C08J5/18C08J2375/08C08J2467/04C08L2203/16C08L2205/03C08L2207/04C08L67/04C08L79/00C08L51/006
Inventor 李英
Owner 李英
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