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TPU synthetic leather and preparation method thereof

A technology of synthetic leather and mixture, which is applied in the direction of textiles and papermaking, can solve the problems of surface wear, poor wear resistance of products, poor wear resistance, etc., and achieve the effect of improved durability, high resilience, and good comprehensive performance

Inactive Publication Date: 2020-04-14
嘉兴市博尔新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned PU synthetic leather has a complicated preparation process, has solvent residues, is not environmentally friendly, and the resulting product has poor wear resistance.
[0004] The process of synthetic leather in the prior art is complicated, and PVC artificial leather and PU leather produced by wet-dry method generally have poor wear resistance on the market. If it is used for a long time, the surface will wear and tear, which will affect the service life.

Method used

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  • TPU synthetic leather and preparation method thereof
  • TPU synthetic leather and preparation method thereof
  • TPU synthetic leather and preparation method thereof

Examples

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preparation example Construction

[0030] A preparation method of TPU synthetic leather, comprising the following steps:

[0031] (1) Weigh TPU particles, fillers, foaming agents, TPU color masterbatches, and additives according to the proportion, add them to the internal mixer, and mix them evenly;

[0032] (2) Transfer the well-mixed mixture to an internal mixer to mix it evenly, then transfer it all to an open mill, carry out kneading, make it further mixed, reach a plasticized state, and stop kneading;

[0033] (3) Transfer the material in the plasticized state obtained in step 2) to the calender, adjust the thickness of the film to reach the required thickness, and the thickness of the film is 0.2mm;

[0034] (4) Laminating the prepared base cloth;

[0035] (5) Foaming and embossing the laminated film to obtain the desired product.

Embodiment 1

[0037] Weigh 150KG of polyester TPU particles with a hardness of 75A, 30KG of calcium carbonate, 9KG of AC foaming agent, 6KG of TPU color masterbatch, and 3KG of PE wax additive according to the proportion, put them into the internal mixer, and mix them evenly. Then, transfer all the materials to the open mill, carry out the open mill, and after reaching the plasticized state, transfer it to the calender, adjust the required thickness to 0.2mm, and paste the prepared base cloth, and paste it The combined film is foamed and sucked to obtain the finished product. The number of times of its wear resistance reaches 5000 revolutions (H-18 grinding wheel, 2KG, TABER wear tester).

Embodiment 2

[0039] Weigh 150KG of polyester TPU particles with a hardness of 70A, 45KG of calcium carbonate, 8KG of AC foaming agent, 7KG of TPU color masterbatch, and 4KG of PE wax additive according to the proportion, put them into the internal mixer, and mix them evenly. Then, transfer all the materials to the open mill, carry out the open mill, and after reaching the plasticized state, transfer it to the calender, adjust the required thickness to 0.2mm, and paste the prepared base cloth, and paste it The combined film is foamed and sucked to obtain the finished product. The number of times of wear resistance reaches 4800 revolutions (H-18 grinding wheel, 2KG, TABER wear tester).

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Abstract

The invention discloses TPU synthetic leather and a preparation method thereof, and belongs to the technical field of synthetic leather. The TPU synthetic leather comprises the following raw materialsin parts by weight of 100 parts of TPU particles, 10-40 parts of filler, 1-8 parts of foaming agent, 1-10 parts of TPU color master batches and 1-4 parts of auxiliaries. The preparation method of theTPU synthetic leather comprises the following steps of (1) weighing raw materials according to a proportion, adding the raw materials into an internal mixer, and uniformly mixing the raw materials; (2) transferring the uniformly mixed mixture into an open mill, and carrying out open milling; (3) transferring the material prepared in the step (2) in a plasticized state into a calender, and adjusting the thickness of a leather film; (4) laminating a prepared base cloth; and (5) carrying out foaming and line absorption on the laminated leather film to obtain the required product. The preparationsteps are simple, the wear resistance of the prepared TPU synthetic leather is far more than that of a PVC artificial leather, a PU leather produced by wet dry method, a waterborne synthetic leatherand an AB-type solvent-free leather, and the service life is long.

Description

technical field [0001] The invention relates to the field of synthetic leather materials, in particular to a TPU synthetic leather and a preparation method thereof. The thermoplastic polyurethane elastomer adopts a calendering process to produce the synthetic leather. Background technique [0002] Synthetic leather is a composite material made of polyurethane resin and base fabric through a certain process. Because synthetic leather has similar touch, appearance and softness to genuine leather, it is widely used in sofas, shoe materials, bags, car tables and chairs, etc. middle. Because a large amount of organic solvents are used in the production process of the PU synthetic leather of the prior art, not only the environment is polluted, but also the finished product has solvent residues. [0003] Chinese patent CN 108755171 A discloses a dry method for preparing PU synthetic leather, including the following raw materials: 400-450 parts of solvent-based polyurethane, 3.0-3....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/14D06N3/00
CPCD06N3/14D06N3/0086D06N3/0063D06N3/0065D06N3/0061D06N3/005D06N2211/28D06N2209/1685D06N2209/1664D06N2209/103D06N2209/1635D06N2209/145D06N2209/143
Inventor 张惠良
Owner 嘉兴市博尔新材料股份有限公司
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