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A preparation method of shape memory polycaprolactone foam and its driving method

A polycaprolactone and memory technology is applied in the field of preparation of shape memory polycaprolactone foam, and can solve the problems of difficult control, high cost, low production efficiency and the like

Active Publication Date: 2020-11-13
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems of complex process, low production efficiency, high cost and difficult control existing in the existing preparation method, and provides a preparation method of shape memory polycaprolactone foam and its driving method

Method used

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  • A preparation method of shape memory polycaprolactone foam and its driving method
  • A preparation method of shape memory polycaprolactone foam and its driving method
  • A preparation method of shape memory polycaprolactone foam and its driving method

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specific Embodiment approach 1

[0023] Specific embodiment one: the preparation method of a kind of shape memory polycaprolactone foam of this embodiment is carried out according to the following steps:

[0024] 1. Dissolve polycaprolactone in dichloromethane, stir at room temperature until completely dissolved, and obtain a solution with a mass concentration of polycaprolactone of 30%, then add benzamide peroxide, and stir at room temperature until dispersed Uniformly, obtain polycaprolactone solution; The mass ratio of described benzamide peroxide and polycaprolactone is (10~20):100;

[0025] 2. Pour the polycaprolactone solution obtained in step 1 into the mold, then put it into a microwave oven, and heat it under the condition that the microwave output power is 650W-750W and the microwave intensity is 2400MHz-2500MHz. The heating time does not exceed 2min. After cooling down, a shape-memory polycaprolactone foam is obtained.

[0026] The shape-memory polycaprolactone foam prepared in this embodiment is ...

specific Embodiment approach 2

[0031] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the mass ratio of benzamide peroxide and polycaprolactone described in step 1 is 15:100. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0032] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the output power of the microwave in step 2 is 700W. Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a preparation method and a driving method of shape-memory polycaprolactone foam. The invention relates to the field of functional polymer materials, in particular to the preparation method and the driving method of the shape-memory polycaprolactone foam. The invention is intended to solve the problems of complex process, low production efficiency, high cost and uneasy control existing in conventional preparation methods. The preparation method includes the following steps: (1) polycaprolactone is dissolved into dichloromethane, stirring is performed at room temperature until the polycaprolactone is dissolved completely, benzamide peroxide is then added, stirring is performed at room temperature until the benzamide peroxide is dispersed uniformly, and thereby polycaprolactone solution is obtained; (2) the polycaprolactone solution obtained in step 1 is poured into a mold, and is then put into a microwave oven to be heated, and thereby the shape-memory polycaprolactone foam is obtained. The driving method is as follows: under the condition of microwave heating, the shape-memory polycaprolactone foam can be restored to an initial shape within 98s.

Description

technical field [0001] The invention relates to the field of functional polymer materials, in particular to a preparation method of shape-memory polycaprolactone foam and a driving method thereof. Background technique [0002] Shape memory polymers and their composites, as an excitation-responsive smart material, can sense changes in the external environment and respond to external heat, light, electricity, magnetism, water, organic solvents, etc. Return to the initial state. Compared with other shape memory materials, shape memory polymers have many advantages, such as light weight, large deformation, variable stiffness, low cost and easy processing, etc., and are widely used in aerospace (intelligent aircraft and deployable structures), 3D And 4D printing, electronic communication, flexible electronic substrates, automobiles, tissue engineering, smart textiles, biomedicine, self-repair, anti-counterfeiting trademarks and other fields. As a cutting-edge research field, sh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/00C08L67/04
Inventor 刘彦菊张风华冷劲松
Owner HARBIN INST OF TECH
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