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Preparation method and application of bio-based polymer capable of recovering high strain

A bio-based polymer, high-strain technology, applied in the field of bio-based polymers, can solve the problems of low shape fixation rate and recovery rate of shape memory polyurethane, no development and utilization of bio-based raw materials, etc., achieve good shape fixation rate, easy to collect Effects of Utilization, Good Environment and Economic Benefits

Inactive Publication Date: 2022-03-11
江苏时代铭阳生物新技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The Chinese patent application number is CN201911320210.8, which discloses a production method of bio-based solvent-free polyurethane. The purpose is to contain no solvent, improve the reaction effect and efficiency, and there is no development and utilization of bio-based raw materials, and no improvement of shape-memory polyurethane. Solve the problems of low shape fixation rate and low response rate

Method used

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  • Preparation method and application of bio-based polymer capable of recovering high strain
  • Preparation method and application of bio-based polymer capable of recovering high strain
  • Preparation method and application of bio-based polymer capable of recovering high strain

Examples

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Effect test

Embodiment 1

[0027] The preparation of the bio-based polyol comprises the following steps:

[0028] Wash the peanut shells, dry them in an electric blast drying oven to constant weight, and then use a pulverizer to pulverize into peanut shell powder, which is pulverized into peanut shell powder and pass through a 30-mesh sieve for use. The powder is mixed with a mixture of PEG-400 and glycerol, the mass ratio of the peanut shell powder, PEG-400, and glycerol is 8.2:2.5:1, the catalyst is 18% concentrated sulfuric acid, and the condensed water and Stirrer, after heating the constant temperature oil bath pot to 140 ℃, slowly add the catalyst dropwise, start timing after the catalyst is added, react for 2.5 hours and quickly cool to room temperature to obtain the bio-based polyol of Example 1.

Embodiment 2

[0030] The preparation of the bio-based polymer comprises the following steps:

[0031]Mix the bio-based polyol of Example 1, the sieved peanut shell powder, deionized water, and A-33, the bio-based polyol, the sieved peanut shell powder, deionized water, A-33 The mass ratio is 100:3.5:2.5:0.6, stir at room temperature for 20min, and then add surfactants L-580 and T-12. The mass of the bio-based polyols, surfactants L-580 and T-12 The ratio is 100:2.4:0.15, continue to stir for 2h, and then quickly add polyhexamethylene diisocyanate, hexamethylene diisocyanate, MBTO, the bio-based polyol, polyhexamethylene diisocyanate, hexamethylene diisocyanate, hexamethylene diisocyanate, and hexamethylene diisocyanate. The mass ratio of methylene diisocyanate is 100:3.8:1.28, and the addition amount of the MBTO is 0.5 of the total mass of bio-based polyol, polyhexamethylene diisocyanate and hexamethylene diisocyanate %, continue stirring for 1 min, then pour the mixture into the mold quic...

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Abstract

The preparation method comprises the following steps: (1) preparation of bio-based polyol: mixing peanut shell powder with a liquefying reagent, starting condensate water and a stirrer, heating a constant-temperature oil bath pan to 135-145 DEG C, slowly dropwise adding a catalyst, starting timing after the catalyst is completely added, and stopping the reaction; after reacting for 2-3 hours, quickly cooling to room temperature to obtain bio-based polyol; and (2) preparation of the bio-based polymer: mixing the bio-based polyol, the sieved peanut shell powder, deionized water and a catalyst I to obtain the bio-based polymer. According to the preparation method and application of the bio-based polymer capable of recovering the high strain, the preparation method is reasonable, the peanut shells are used as the raw material to prepare bio-based polyol, energy consumed in the production process is low, carbon emission is reduced, and the prepared bio-based polymer is high in strain, low in modulus and high in recovery rate. The shape fixing rate, the shape recovery rate and the cycling stability are good, and the application prospect is wide.

Description

technical field [0001] The invention belongs to the technical field of bio-based polymers, and in particular relates to a preparation method and application of a bio-based polymer capable of recovering high strain. Background technique [0002] Bio-based refers to a new class of materials produced by biological, chemical and physical methods using renewable substances, including crops, trees and other plants other than food, and their residues and inclusions as raw materials. In order to reduce the consumption of fossil resources, it has become very important to develop bio-based feedstocks for production. [0003] As a class of smart materials, stimulated deformation polymers can change their volume or shape under external stimuli. There are many types of excited deformation polymers, including shape memory polymers, responsive hydrogels, and liquid crystal elastomers. As a class of excitatory deformation polymers, shape memory polymers can fix temporary shapes and return ...

Claims

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Application Information

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IPC IPC(8): C08G18/79C08G18/73C08G18/64
CPCC08G18/64C08G18/73C08G18/792
Inventor 倪柏雯
Owner 江苏时代铭阳生物新技术研究院有限公司
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