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Silicon-containing thermoplastic polyurethane elastomer and preparation method thereof

A thermoplastic polyurethane and plastic polyurethane technology, applied in the field of silicon-containing thermoplastic polyurethane elastomer and its preparation, can solve the problems of high production cost and low production efficiency of silicon-containing TPU, and achieve production efficiency improvement, excellent coating and surface touch. , excellent wear-resistant effect

Inactive Publication Date: 2021-01-01
江苏登科聚氨酯材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a silicon-containing thermoplastic polyurethane elastomer and a preparation method thereof, so as to solve the defects of low production efficiency and high production cost of silicon-containing TPU in the prior art

Method used

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  • Silicon-containing thermoplastic polyurethane elastomer and preparation method thereof
  • Silicon-containing thermoplastic polyurethane elastomer and preparation method thereof
  • Silicon-containing thermoplastic polyurethane elastomer and preparation method thereof

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preparation example Construction

[0047] A preparation method of silicon-containing thermoplastic polyurethane elastomer, said method comprising the steps of:

[0048] Step 1: Mix diisocyanate, chain extender, polyol, and group-containing silicone oil in a twin-screw extruder. The temperature of the twin-screw extruder is 140-250 degrees, and the screw speed is 150-350RPM;

[0049] Step 2: Extrude the mixed material through reaction;

[0050] Step 3: Cut the extruded material into pellets under water to obtain silicon-containing TPU pellets.

Embodiment 1

[0064]According to the mass ratio, 53.87% of polyols (PTMEG2000) with a functionality of 2, 29.95% of diphenylmethane diisocyanate (MDI), 7.48% of aliphatic diols (BDO), and 8.7% of hydroxyl-terminated high Pouring with active silicone oil, in which the temperature of the polyol (PTMEG2000) component is controlled at 95 °C, and the temperature of diphenylmethane diisocyanate (MDI) and aliphatic diol (BDO) is both controlled at 50 °C;

[0065] Add the antioxidant (1010) of 0.3%PTMEG2000 weight again, the antioxidant (168) of 0.2%PTMEG2000 weight, the lubricant (E wax) of 0.2%PTMEG2000 weight, the anti-UV agent (201) of 0.4%PTMEG2000 weight, The ultraviolet absorber (144) of 0.2% PTMEG2000 weight and the catalyst (stannous octoate) of 45ppm PTMEG2000 weight;

[0066] Set the temperature of the 13 zones of the twin-screw extruder as 120°C, 180°C, 185°C, 190°C, 190°C, 185°C, 170°C, 160°C, 150°C, 150°C, 150°C, 160°C , 170°C, the screw speed is 220rpm;

[0067] After the reaction ...

Embodiment 2

[0070] According to the mass ratio, 53.87% of polyols (PTMEG2000) with a functionality of 2, 29.95% of diphenylmethane diisocyanate (MDI), 7.48% of aliphatic diols (BDO), and 8.7% of amino-terminated high Pouring with active silicone oil, in which the temperature of the polyol (PTMEG2000) component is controlled at 95 °C, and the temperature of diphenylmethane diisocyanate (MDI) and aliphatic diol (BDO) is both controlled at 50 °C;

[0071] Add the antioxidant (1010) of 0.3%PTMEG2000 weight again, the antioxidant (168) of 0.2%PTMEG2000 weight, the lubricant (E wax) of 0.2%PTMEG2000 weight, the anti-UV agent (201) of 0.4%PTMEG2000 weight, The ultraviolet absorber (144) of 0.2% PTMEG2000 weight and the catalyst (stannous octoate) of 45ppm PTMEG2000 weight;

[0072] Set the temperature of the 13 zones of the twin-screw extruder as 120°C, 180°C, 185°C, 190°C, 190°C, 185°C, 170°C, 160°C, 150°C, 150°C, 150°C, 160°C , 170°C, the screw speed is 220rpm;

[0073] After the reaction is...

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Abstract

The invention discloses a silicon-containing thermoplastic polyurethane elastomer (TPU) and a preparation method thereof. The method comprises the following steps: mixing diisocyanate, a chain extender, polyol and group-containing terminated silicone oil in a twin-screw extruder; and reacting and extruding the mixed materials. The squeezed material is diced underwater, thus to obtain silicon contained TPU particles. The hardness range of the finished product is 55A-72D, the finished product has excellent wear resistance, hydrolysis resistance, chemical reagent resistance and high temperature resistance, and has more excellent coating property and surface touch, and the product is synthesized and granulated by adopting a one-step method of a double-screw extruder, so that the production efficiency is improved, and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of production of silicon-containing thermoplastic polyurethane elastomer (TPU), in particular to a silicon-containing thermoplastic polyurethane elastomer and a preparation method thereof. Background technique: [0002] Thermoplastic polyurethane elastomer (TPU) is a (AB) n-type block linear polymer, A is a polyester or polyether with a high molecular weight (1000-6000), and B is a diatom containing 2-12 straight-chain carbon atoms. Alcohol, the chemical structure between AB chain segments is diisocyanate. Thermoplastic polyurethane rubber is cross-linked by intermolecular hydrogen bonds or lightly cross-linked between macromolecular chains. As the temperature increases or decreases, these two cross-linked structures are reversible. In the molten state or solution state, the intermolecular force weakens, and after cooling or solvent volatilization, strong intermolecular force connects together, restoring th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/61C08G18/48C08G18/32
CPCC08G18/6674C08G18/61C08G18/4854C08G18/3206C08G18/4009
Inventor 赵昌伦任军
Owner 江苏登科聚氨酯材料有限公司
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