Preparation method of bionic inspired polyurethane elastomer with super toughness, super stretching, self-repairing and high resilience

A polyurethane elastomer and self-repairing technology, which is applied in the preparation of super-stretch and self-repairing high-resilience polyurethane elastomer. The effects of mechanical properties, excellent resilience, and simple preparation methods

Inactive Publication Date: 2021-05-14
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of low mechanical strength, irreparable and low resilience of existing polyurethane elastomers, and to provide a method for preparing a super-tough, super-stretchable and repairable high-resilience elastomer at the same time

Method used

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  • Preparation method of bionic inspired polyurethane elastomer with super toughness, super stretching, self-repairing and high resilience
  • Preparation method of bionic inspired polyurethane elastomer with super toughness, super stretching, self-repairing and high resilience
  • Preparation method of bionic inspired polyurethane elastomer with super toughness, super stretching, self-repairing and high resilience

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Embodiment 1

[0027] A method for preparing a bionic-inspired super-tough, super-stretchable and self-repairing high-resilience polyurethane elastomer, comprising the following steps:

[0028] Step 1) Synthesis of Multiple Hydrogen Bond Monomer (HDI-UPy-HDI)

[0029] Step 1.1) Synthesis of multiple hydrogen bond precursors: 5.12g of 2-acetylbutyrolactone, 3.6g of guanidine carbonate and 11ml of triethylamine were dissolved in 40ml of absolute ethanol, and refluxed at 100°C for 1 hour. The mixture gradually became clear from turbidity, and the reaction was continued for 3 hours. After the reaction, the mixture was filtered to obtain a precipitate, washed three times with ethanol, and finally dried in a vacuum oven at room temperature for 24 hours to obtain a white powder solid that is a multiple hydrogen bond precursor.

[0030] Step 1.2) Add 0.85g of the precursor obtained from the above reaction, 14ml of 1,6-hexamethylene diisocyanate (HDI) and 1ml of pyridine to a 100ml round bottom flas...

Embodiment 2

[0035] A method for preparing a bionic-inspired super-tough, super-stretchable and self-repairing high-resilience polyurethane elastomer, comprising the following steps:

[0036] Step 1) Synthesis of Multiple Hydrogen Bond Monomer (HDI-UPy-HDI)

[0037] Step 1.1) Synthesis of multiple hydrogen bond precursors: 5.12g of 2-acetylbutyrolactone, 3.6g of guanidine carbonate and 11ml of triethylamine were dissolved in 40ml of absolute ethanol, and refluxed at 95°C for 1 hour. The mixture gradually became clear from turbidity, and the reaction was continued for 3 hours. After the reaction, the mixture was filtered to obtain a precipitate, washed three times with ethanol, and finally dried in a vacuum oven at room temperature for 24 hours to obtain a white powder solid that is a multiple hydrogen bond precursor.

[0038] Step 1.2) Add 0.85g of the precursor obtained from the above reaction, 14ml of 1,6-hexamethylene diisocyanate (HDI) and 1ml of pyridine to a 100ml round bottom flask...

Embodiment 3

[0043] A method for preparing a bionic-inspired super-tough, super-stretchable and self-repairing high-resilience polyurethane elastomer, comprising the following steps:

[0044] Step 1) Synthesis of Multiple Hydrogen Bond Monomer (HDI-UPy-HDI)

[0045] Step 1.1) Synthesis of multiple hydrogen bond precursors: 5.12g of 2-acetylbutyrolactone, 3.6g of guanidine carbonate and 11ml of triethylamine were dissolved in 40ml of absolute ethanol, and refluxed at 100°C for 1 hour. The mixture gradually became clear from turbidity, and the reaction was continued for 3 hours. After the reaction, the mixture was filtered to obtain a precipitate, washed three times with ethanol, and finally dried in a vacuum oven at room temperature for 24 hours to obtain a white powder solid that is a multiple hydrogen bond precursor.

[0046] Step 1.2) Add 0.85g of the precursor obtained from the above reaction, 14ml of 1,6-hexamethylene diisocyanate (HDI) and 1ml of pyridine to a 100ml round bottom flas...

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Abstract

The invention relates to a preparation method of a bionic inspired polyurethane elastomer with super toughness, super stretching, self-repairing and high resilience, and the raw materials comprise polytetrahydrofuran, 1, 6-hexamethylene diisocyanate, acetyl butyrolactone, guanidine carbonate, 2, 6-diaminopyridine, anhydrous ferric trichloride and the like. The preparation method comprises the following steps: 1) synthesizing a multiple hydrogen bond monomer; and 2) preparing an elastomer containing multiple hydrogen bonds and metal complex bonds. the polyurethane elastomer has the advantages that a network of the polyurethane elastomer contains a large number of multiple hydrogen bonds and metal complex bonds, so that the elastomer has excellent mechanical properties, namely super toughness and super stretching. The dynamic reversibility of the non-covalent bond endows the elastomer with self-repairability. The elastomer is simple in preparation method and rich in raw materials, and compared with a traditional polyurethane elastomer, the elastomer has controllable toughness and stretchability, excellent self-repairability and high rebound resilience and has potential application value in the fields of wearable materials, sealing gaskets, hot melt adhesives and the like.

Description

technical field [0001] The invention belongs to the field of functional polymer materials, and in particular relates to a preparation method of a polyurethane elastomer with super toughness, super stretching and self-repairing high resilience. Background technique [0002] Polyurethane elastomer is an important functional material with excellent comprehensive properties such as high strength, high toughness, wear resistance and oil resistance, and is widely used in many fields of national economy, such as light industry, chemical industry, electronics, textile, medical treatment, construction , building materials, automobiles, national defense, etc. Polyurethane elastomers can be divided into thermosetting and thermoplastic elastomers. Thermoset elastomers have high modulus, but are poorly ductile and not recyclable. While thermoplastic elastomer has good toughness, but its modulus is low and its mechanical properties are poor. Although great progress has been made in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/32C08G18/12C08G18/83C08J5/18C08L75/08
CPCC08G18/6685C08G18/4854C08G18/3844C08G18/3848C08G18/12C08G18/83C08J5/18C08J2375/08
Inventor 孙平川黎剑王粉粉
Owner NANKAI UNIV
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