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High-strength heat-resistant thermoplastic polyurethane composition and preparation method thereof

A thermoplastic polyurethane and composition technology, applied in the field of high-strength and heat-resistant thermoplastic polyurethane composition and its preparation, can solve the problems that have not been seen yet, and achieve the effect of making up for slow cooling speed and fast cooling speed

Inactive Publication Date: 2013-01-23
SHANGHAI KUMHO SUNNY PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there has not been any patent related to the modification of thermoplastic polyurethane elastomers by using thermoplastic polyester as the dispersion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4

[0025] A preparation method of a high-strength heat-resistant thermoplastic polyurethane composition, the method comprising the following steps:

[0026] (1) Prepare raw materials, prepare raw materials according to the components and contents described in Table 1, wherein the thermoplastic polyurethane elastomer is commercially available Elastollan polyester type thermoplastic polyurethane elastomer, Shore hardness is 70A, or commercially available Texin polyether Type thermoplastic polyurethane elastomer;

[0027] (2) After the above raw materials are mixed uniformly in the mixer, use a twin-screw extruder to granulate, and control the temperature of each section of the extruder to 180°C, 190°C, 200°C, 220°C, The temperature is 180° C., extruded and granulated to obtain a thermoplastic polyurethane composition with high strength and heat resistance.

[0028] Table 1

[0029] Composition (parts by weight)

Example 1

Example 2

Example 3

Example 4

...

Embodiment 5

[0034] A preparation method of a high-strength heat-resistant thermoplastic polyurethane composition, the method comprising the following steps:

[0035] (1) Prepare materials according to the following components and contents: 60kg thermoplastic polyurethane, 40kg thermoplastic polyester; wherein thermoplastic polyurethane is commercially available Desmopan polyester type thermoplastic polyurethane elastomer, Shore hardness is 70D, and thermoplastic polyester is terephthalic acid Butanediol ester (PBT);

[0036] (2) After the above raw materials are mixed evenly in the mixer, use a twin-screw extruder to granulate. ℃, extrusion granulation to obtain the product.

Embodiment 6

[0038] A preparation method of a high-strength heat-resistant thermoplastic polyurethane composition, the method comprising the following steps:

[0039] (1) Prepare materials according to the following components and content: 95kg thermoplastic polyurethane, 5kg thermoplastic polyester; wherein thermoplastic polyurethane is commercially available Estane polyether type thermoplastic polyurethane elastomer, and thermoplastic polyester is butylene terephthalate (PBT );

[0040] (2) After mixing the above raw materials uniformly in the mixer, use a twin-screw extruder to granulate, and control the temperature of each section of the extruder to 180°C, 190°C, 200°C, 220°C, and the temperature of the machine head to 200°C , extruding and granulating to obtain the product.

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PUM

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Abstract

The invention relates to a high-strength heat-resistant thermoplastic polyurethane composition and a preparation method thereof. The composition comprises the following components in parts by weight: 60-95 thermoplastic polyurethane and 5-40 thermoplastic polyester. The method comprises the following steps: uniformly mixing the raw materials in a mixer, granulating with a twin-screw extruder, controlling the temperature of each section of the extruder to be 180-220 DEG C and the temperature of the head of the extruder to be 170-200 DEG C to finally obtain the product through extrusion granulation. Compared with the prior art, the invention has the advantages of high heat resistance, high wear resistance and high chemical resistance, and effectively overcomes the defect of low cooling speed of the hermoplastic polyurethane elastomer.

Description

technical field [0001] The invention relates to a polyurethane composition and a preparation method thereof, in particular to a high-strength heat-resistant thermoplastic polyurethane composition and a preparation method thereof. Background technique [0002] Thermoplastic polyurethane elastomer (TPU) is composed of a flexible segment with a glass transition temperature below room temperature (also known as a soft segment or a soft segment) and a rigid segment with a glass transition temperature higher than room temperature (also known as a hard segment or a hard segment) made of blocks. It has both the elasticity of rubber and the rigidity and processing properties of thermoplastics. It has high strength and high elasticity, excellent wear resistance and low temperature resistance, and is used in many fields. For example: elastic tubing, film, mechanical parts, etc. However, the heat resistance of thermoplastic polyurethane is insufficient, and the general use temperature...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/04C08L75/06C08L75/08C08L67/00C08L67/02B29B9/06B29C47/92B29C48/40B29C48/92
CPCB29C48/92B29C2948/92704B29C48/04B29C48/40B29C48/9185B29C2948/92895B29C2948/92904
Inventor 张平廖志荣李荣群辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS