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Thermoplastic polyurethane elastomer (TPU) and preparation method thereof

A thermoplastic polyurethane and elastomer technology, applied in the field of polymer compounds, can solve the problems of poor processing and molding performance, poor antistatic performance, low conductivity, etc., to achieve improved antistatic performance, excellent wear resistance and good compatibility Effect

Inactive Publication Date: 2015-02-11
福建有家家居有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, polyester TPU has high hardness, modulus, tear strength and tensile strength at the same time, but polyester TPU has poor antistatic performance due to low conductivity, and adding antistatic agent components will lead to molding Poor resistance, resulting in poor processing and forming performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The technical solutions of the present invention will be further described below in conjunction with specific examples, but they do not limit the protection scope of the present invention.

[0019] The thermoplastic polyurethanes described in the examples and comparative examples are mixed together to obtain a reaction mixture, prepared by reacting in a reaction extruder at 235-250° C., and pulverized, and then process the sample in an injection molding machine. According to ASTM method to test. The raw materials are shown in Table 1-2, and the test results are shown in Table 3-4.

[0020] Table 1

[0021] Percentage (wt.%) Example 1 Example 2 Example 3 Example 4 MDI 18.8 18.8 18.8 18.2 1,4-Butanediol Adipate 53.2 53.2 53.2 51.8 1,4-Butanediol 26.51 24.51 24.01 24.76 1-Ethyl-3-methylimidazoline trifluoromethanesulfonate 0.75 0.75 0.75 1.5 Dibutyltin dilaurate 0.20 0.20 0.20 0.20 organophosphate 0.02 ...

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PUM

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Abstract

The invention relates to a thermoplastic polyurethane elastomer (TPU). First, (a) diisocyanate, (b) polyester polyol, (c) at least one chain-extender, (d) 1-ethyl-3-methylimidazolium trifluoromethanesulfonate, (e) a catalyst and (f) optional additives are prepared; the components (a), (b), (c), (d), (e) and (f) are sequentially mixed or mixed at a same time, such that a reaction mixture is obtained; and a reaction is carried out under a temperature of 210-250 DEG C, such that the elastomer is obtained. According to the invention, 1-ethyl-3-methylimidazolium trifluoromethanesulfonate is introduced into the raw materials of the thermoplastic polyurethane elastomer, such that a material antistatic property is improved, and surprisingly the material has good miscibility with other components. The prepared antistatic thermoplastic polyurethane elastomer also shows good mechanical performances such as tensile strength and ultimate elongation rate. The material also has excellent wear resistance.

Description

technical field [0001] The invention belongs to the technical field of polymer compounds, and more specifically, the invention relates to a thermoplastic polyurethane elastomer and a preparation method thereof. Background technique [0002] Thermoplastic polyurethane elastomer, also known as polyurethane thermoplastic elastomer (Thermoplastic Polyurethane Elastomer, referred to as TPU), is one of the three types of polyurethane elastomer. Compared with the type polyurethane elastomer (CPU) and the mixing type polyurethane elastomer (MPU), the thermoplastic polyurethane elastomer has no or little chemical crosslinking in the chemical structure, and its molecular chain is basically linear, but there is a certain amount of Physical crosslinking. [0003] TPU is a (AB) n-type block linear polymer, A is a polyester or polyether with a molecular weight of 1000-6000, called a long chain, and B is a diol containing 2-12 straight-chain carbon atoms, called The short bond, the chemi...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/42C08K5/42
CPCC08G18/3206C08G18/4238C08G18/664C08K5/42
Inventor 陈为民
Owner 福建有家家居有限公司
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