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Preparation method of TPU/POE alloy

An alloy and temperature control technology, which is applied in the field of TPU/POE alloy preparation, can solve problems such as performance loss, delay of TPU reaction process, poor dispersion effect, etc., to avoid performance decline, improve thermal stability, and improve dispersion effect Effect

Pending Publication Date: 2022-02-01
SHANDONG INOV POLYURETHANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has the advantage of simple operation, but the dispersion effect is not good, and the material will lose its own performance after shearing and mixing again.
[0005] Patent CN106867231A discloses a process for preparing TPU alloy by in-situ synthesis. This process method is to add another material into the screw extruder by side feeding in the TPU synthesis stage, but because all of them are added to the first zone of the screw , the addition of another powder material will reduce the full contact of TPU raw materials, which will delay the reaction process of TPU, which will affect the physical properties of TPU alloy materials

Method used

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  • Preparation method of TPU/POE alloy
  • Preparation method of TPU/POE alloy
  • Preparation method of TPU/POE alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The composition of raw materials is as follows:

[0030]

[0031] The polyester diol is PE-4010 produced by Shandong Yinuowei Polyurethane Co., Ltd.;

[0032] The NCO / OH value of the raw material system was 0.96.

[0033] The preparation method is as follows:

[0034] (1) Mix and heat polyester diol, MDI-100, BDO, 1010, DY-20, and Tinuvin 783 to 145°C, mix well, and inject into the first-stage screw extruder, and the first-stage screw extruder The exit temperature is controlled at 120-190°C, the screw speed is controlled at 180rpm, and after shear blending and melting reaction, OH-capped TPU is obtained;

[0035] (2) The first section of the screw extruder is connected to the second section of the screw extruder, the screw blocks of the second section of the screw extruder are composed of shear blocks, and the end of the second section of the screw extruder is equipped with a counter-rotating block, the OH-capped TPU continues to be passed into the second stage of...

Embodiment 2

[0037] The composition of raw materials is as follows:

[0038]

[0039] The polyester diol is PE-4020 produced by Shandong Yinuowei Polyurethane Co., Ltd.;

[0040] The NCO / OH value of the raw material system was 0.97.

[0041] The preparation method is as follows:

[0042] (1) Mix and heat polyester diol, MDI-100, BDO, 1010, DY-20, and Tinuvin 783 to 145°C, mix well, and inject into the first-stage screw extruder, and the first-stage screw extruder The exit temperature is controlled at 120-190°C, the screw speed is controlled at 180rpm, and after shear blending and melting reaction, OH-capped TPU is obtained;

[0043] (2) The first section of the screw extruder is connected to the second section of the screw extruder, the screw blocks of the second section of the screw extruder are composed of shear blocks, and the end of the second section of the screw extruder is equipped with a counter-rotating block, the OH-capped TPU continues to be passed into the second stage of...

Embodiment 3

[0045] The composition of raw materials is as follows:

[0046]

[0047] The polyester diol is PE-4030 produced by Shandong Yinuowei Polyurethane Co., Ltd.;

[0048] The NCO / OH value of the raw material system was 0.99.

[0049] The preparation method is as follows:

[0050](1) Mix and heat polyester diol, MDI-100, BDO, 1010, DY-20, and Tinuvin 783 to 145°C, mix well, and inject into the first-stage screw extruder, and the first-stage screw extruder The exit temperature is controlled at 120-190°C, the screw speed is controlled at 180rpm, and after shear blending and melting reaction, OH-capped TPU is obtained;

[0051] (2) The first section of the screw extruder is connected to the second section of the screw extruder, the screw blocks of the second section of the screw extruder are composed of shear blocks, and the end of the second section of the screw extruder is equipped with a counter-rotating block, the OH-capped TPU continues to be passed into the second stage of ...

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Abstract

The invention belongs to the technical field of polymer alloy materials, and particularly relates to a preparation method of TPU / POE alloy. The preparation method of the TPU / POE alloy comprises the following steps: (1) mixing polyol, isocyanate, a chain extender and a functional aid, adding the mixture into a first-section screw extruder, and carrying out shearing blending and melting reaction to obtain OH-terminated TPU; (2) continuing to introduce the OH-terminated TPU into the second-section screw extruder, adding maleic anhydride grafted POE into the front section of the second-section screw extruder to obtain a TPU / POE alloy in a molten state, and carrying out underwater pelletizing, cooling and drying to obtain TPU / POE alloy particles. According to the invention, uniform dispersion of TPU and POE is realized, and optimal performance of the alloy is realized by forming an optimal "island" structure.

Description

technical field [0001] The invention belongs to the technical field of polymer alloy materials, and in particular relates to a preparation method of a TPU / POE alloy. Background technique [0002] In recent years, two or more different high polymers have been compounded together by modification methods such as blending, grafting and block copolymerization at home and abroad to obtain properties that a single polymer does not have or have. Composite material with excellent comprehensive performance. Thermoplastic polyurethane elastomer (TPU) not only has the physical properties of high strength, good elasticity, excellent wear resistance and oil resistance of rubber, sufficient resistance to oxygen, ozone and radiation, but also has the mechanical properties of plastics (tensile High strength and elongation at break), small compression set, large bearing capacity and simple process, etc., and have a wide range of applications. However, its low thermal stability and high pric...

Claims

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Application Information

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IPC IPC(8): C08L75/06C08L51/06
CPCC08L75/06C08L51/06
Inventor 张玉瑞管永范文庆李鑫苟卓罗杰
Owner SHANDONG INOV POLYURETHANE
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