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Preparation method of graphene-polyurethane elastomer

A polyurethane elastomer and graphene technology, which is applied in the field of nano-graphene material doped polyurethane elastomer, can solve the problems of poor wear resistance and achieve the effect of easy operation, improved strength and wear resistance

Inactive Publication Date: 2018-01-12
六安永吉纳米材料科技有限公司
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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 kind of preparation method of graphene-polyurethane elastomer, in order to solve the problem that the polyurethane in the prior art is used in the poor wear resistance of leather field

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The preparation method of graphene-polyurethane elastomer includes the following steps:

[0020] (1) Mix and stir natural graphite with acidic solution, add catalyst and expansion intercalant successively, stir for 5-10 minutes, and let stand at room temperature for 1 hour to obtain graphene precursor; rinse the graphene precursor with water several times, then Place the graphene dispersion in ultrasonic for 1 hour to obtain a graphene dispersion; centrifuge the graphene dispersion to obtain primary graphene, wash the primary graphene several times, and then freeze-dry in situ to obtain graphene powder after removing the moisture ;

[0021] (2) Mix three raw materials of polyester polyol, isocyanate and butylene glycol to obtain mixture A;

[0022] (3) Mix uniformly methyl titanate, 2,6-di-tert-butyl-4-methylphenol, stearic acid amide, ultraviolet absorber and hydrolysis resistant agent to obtain mixture B;

[0023] (4) A certain amount of Mixture A and Mixture B are respectiv...

Embodiment 2

[0026] The preparation method of graphene-polyurethane elastomer includes the following steps:

[0027] (1) Mix and stir natural graphite with acidic solution, add catalyst and expansion intercalant successively, stir for 5-10 minutes, and let stand at room temperature for 1 hour to obtain graphene precursor; rinse the graphene precursor with water several times, then Place the graphene dispersion in ultrasonic for 1 hour to obtain a graphene dispersion; centrifuge the graphene dispersion to obtain primary graphene, wash the primary graphene several times, and then freeze-dry in situ to obtain graphene powder after removing the moisture ;

[0028] (2) Mix three raw materials of polyester polyol, isocyanate and butylene glycol to obtain mixture A;

[0029] (3) Mix uniformly butyl titanate, 2,6-di-tert-butyl-4-methylphenol, stearic acid amide and oleic acid amide mixture, ultraviolet absorber and hydrolysis resistant agent to obtain mixture B;

[0030] (4) A certain amount of Mixture A...

Embodiment 3

[0033] The preparation method of graphene-polyurethane elastomer includes the following steps:

[0034] (1) Mix and stir natural graphite with acidic solution, add catalyst and expansion intercalant successively, stir for 5-10 minutes, and let stand at room temperature for 1 hour to obtain graphene precursor; rinse the graphene precursor with water several times, then Place the graphene dispersion in ultrasonic for 1 hour to obtain a graphene dispersion; centrifuge the graphene dispersion to obtain primary graphene, wash the primary graphene several times, and then freeze-dry in situ to obtain graphene powder after removing the moisture ;

[0035] (2) Mix three raw materials of polyester polyol, isocyanate and butylene glycol to obtain mixture A;

[0036] (3) Mix uniformly the mixture of butyl titanate, tetra[β-(3,5-di-tert-butyl 4-hydroxyphenyl) propionic acid] pentaerythritol ester, oleic acid amide, ultraviolet absorber and hydrolysis resistant agent, Obtain mixture B;

[0037] (...

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Abstract

The invention relates to a preparation method of a graphene-polyurethane elastomer. The preparation method comprises the following steps: preparing graphene powder; mixing three raw materials, namelypolyester polyol, isocyanate and butanediol, thus obtaining a mixture A; uniformly mixing a catalyst, an antioxidant, a lubricant, an ultraviolet absorbent and a hydrolysis resistance agent, thus obtaining a mixture B; mixing the mixture A with the mixture B, solidifying the final mixture to be a sheet bar, granulating the sheet bar, and carrying out co-blending reaction on the graphene powder anda coupling agent, thus obtaining graphene-polyurethane elastomer. According to the preparation method, the coupling agent reacts with polyurethane and a graphene surface active group respectively; graphene is coped into a polyurethane elastomer; as the graphene has properties of superlight weight, high intensity, high corrosion resistance and the like, the intensity and the corrosion resistance of a graphene-polyurethane elastomer material are improved.

Description

Technical field [0001] The invention relates to the field of nano graphene materials doped polyurethane elastomers, in particular to a method for preparing graphene-polyurethane elastomers. Background technique [0002] Thermoplastic polyurethane elastomer (TPU) not only has the rubber characteristics of cross-linkable polyurethane such as high strength and high wear resistance, but also has the thermoplastic properties of linear polymer materials, so that its application can be extended to the plastics field. Especially in recent decades, TPU has become one of the fastest growing polymer materials. [0003] The thermoplastic polyurethane molecular chain contains macromolecular compounds containing urethane groups (-NH-COO-) or isocyanate groups (-NCO). Polyurethane film has good low temperature resistance, flexibility and adhesion, but poor water resistance and high temperature resistance. Polyurethane film has the advantages of environmental protection, safety, non-toxicity, co...

Claims

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Application Information

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IPC IPC(8): C08L75/06C08K13/06C08K9/00C08K3/04
Inventor 王天珍
Owner 六安永吉纳米材料科技有限公司
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