A kind of foamed thermoplastic polyurethane artificial leather and preparation method thereof

A technology of thermoplastic polyurethane and plastic polyurethane, which is applied in the field of artificial leather materials, can solve the problems of difficult control and stability of product quality, environmental protection, etc., and achieve the effect of good elasticity, high closed cell rate, and uniform cell size

Active Publication Date: 2019-03-19
MIRACLL CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method uses a chemical foaming agent in the production process, which is not environmentally friendly, and the quality of the produced product is difficult to control and stabilize

Method used

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  • A kind of foamed thermoplastic polyurethane artificial leather and preparation method thereof
  • A kind of foamed thermoplastic polyurethane artificial leather and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) 100 parts by weight of thermoplastic polyurethane particles A are dried at 100° C. for 4 hours and then put into an extruder. The extruder screw temperature is 120-150° C., and the surface layer is prepared by calendering;

[0031] Wherein, the thermoplastic polyurethane particle A has a Shore hardness of 50A and a melt flow rate of 20g / 10min, which is measured by applying a weight of 5kg at 200°C according to ASTM-1238;

[0032] (2) impregnating the fiber cloth with a water-based PU resin with a solid content of 10% for 10 minutes, and then drying it at 100° C. for 1 hour to obtain the bottom layer.

[0033] Wherein, the above-mentioned step (1) and step (2) procedures are in no particular order;

[0034] (3) Use a high mixer to mix 100 parts by weight of thermoplastic polyurethane particles B, 1 part by weight of PE wax, and 1 part by weight of color masterbatch into the first extruder, and control the screw temperature of the first extruder to be 150 -165-180-17...

Embodiment 2

[0038] (1) 100 parts by weight of thermoplastic polyurethane particles A are put into an extruder, the temperature of the screw of the extruder is 130-160° C., and the surface layer is prepared by casting process;

[0039] Wherein, the thermoplastic polyurethane particle A Shore hardness is 60A, and the melt flow rate is 30g / 10min, which is measured according to ASTM-1238 at 200°C by applying a weight of 5kg;

[0040](2) After impregnating the fiber cloth with a water-based PU resin with a solid content of 20% for 20 minutes, dry it at 100° C. for 2 hours to prepare the bottom layer.

[0041] Wherein, the above-mentioned step (1) and step (2) procedures are in no particular order;

[0042] (3) 100 parts by weight of thermoplastic polyurethane particles B, 2 parts by weight of erucamide, and 5 parts by weight of color masterbatch are uniformly mixed by a high-mixer and then added to the first extruder, and the temperature of the screw of the first extruder is controlled to be ...

Embodiment 3

[0045] (1) 100 parts by weight of thermoplastic polyurethane particles A are put into an extruder, the extruder screw temperature is 140-180° C., and the surface layer is prepared by calendering;

[0046] Wherein, the thermoplastic polyurethane particle A has a Shore hardness of 80A and a melt flow rate of 40g / 10min, which is measured by applying a weight of 5kg at 200°C according to ASTM-1238;

[0047] (2) After impregnating the fiber cloth with a water-based PU resin with a solid content of 40% for 30 minutes, dry it at 100° C. for 3 hours to prepare the bottom layer.

[0048] Wherein, the above-mentioned step (1) and step (2) procedures are in no particular order;

[0049] (3) 100 parts by weight of thermoplastic polyurethane particles B, 5 parts by weight of stearic acid amide, and 10 parts by weight of color masterbatch are mixed uniformly by a high-mixer and then added to the first extruder to control the temperature of the first extruder screw. 170-185-200-195°C to obt...

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Abstract

The invention relates to foaming thermoplastic polyurethane artificial leather and a preparation method thereof. The foaming thermoplastic polyurethane artificial leather is obtained by compositing a surface layer, a foaming layer and a bottom layer from top to bottom sequentially, wherein the surface layer is prepared from thermoplastic polyurethane particles A through a calendering process, the foaming layer is prepared from thermoplastic polyurethane particles B, a lubricating agent and color masterbatch through a supercritical carbon dioxide foaming, extrusion calendering combined mode, and the bottom layer is obtained in the mode that fiber cloth is dipped in waterborne PU resin to be dried. The foaming thermoplastic polyurethane artificial leather product is high in closed pore rate which is larger than or equal to 90%, good in abrasion resistance, elasticity and hand feeling, the production process is environmentally friendly, product quality is stable, and the foaming thermoplastic polyurethane artificial leather is suitable for industrial continuous production.

Description

technical field [0001] The invention relates to a foamed thermoplastic polyurethane artificial leather and a preparation method thereof, belonging to the field of artificial leather materials. Background technique [0002] The artificial leather materials commonly used in the market are PU synthetic leather and PVC synthetic leather. However, the above-mentioned synthetic leather materials will emit harmful substances such as chlorides, sulfides, and isocyanates during production and use, which will endanger the health of users and cause serious environmental pollution problems. [0003] Thermoplastic polyurethane elastomer material (TPU) has a wide hardness range, excellent wear resistance, mechanical strength, water resistance, oil resistance, chemical corrosion resistance, mold resistance, environmental friendliness, and recyclability. Based on the above advantages, the use of TPU to produce artificial leather has broad application prospects. [0004] Patent 101021046A ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/14B32B37/06B32B37/15B32B27/12B32B27/04B32B27/40
CPCB32B5/02B32B5/20B32B5/245B32B27/065B32B27/40B32B37/06B32B37/153B32B2260/021B32B2260/046B32B2266/0278B32B2266/08B32B2307/51B32B2307/554B32B2309/02D06N3/0047D06N3/0086D06N3/145D06N2209/16D06N2209/1685D06N2211/28
Inventor 王光阜张生王娜王仁鸿宋红玮
Owner MIRACLL CHEM
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