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Preparation method of shape memory polymer and application thereof in 4D (four-dimensional) printing

A technology of memory polymers and polymers, which is applied in the direction of additive manufacturing, manufacturing tools, metal processing equipment, etc., can solve the problems of not being able to meet the needs of biomedicine, not being able to meet the needs of low-power drives, and not being able to print, and to achieve a wide range of molding sizes , power saving, low cost effect

Pending Publication Date: 2018-03-20
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problem that the existing method cannot be printed into any shape according to the actual needs, and the existing shape memory polymer has a high Tg, cannot meet the needs of low power drive, and cannot meet the needs of biomedicine, and provides a shape memory polymer Preparation method and its application in 4D printing

Method used

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  • Preparation method of shape memory polymer and application thereof in 4D (four-dimensional) printing
  • Preparation method of shape memory polymer and application thereof in 4D (four-dimensional) printing

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specific Embodiment approach 1

[0021] Embodiment 1: The preparation method of a shape memory polymer in this embodiment is specifically carried out according to the following steps:

[0022] 1. Dry polymer monomer A and polymer monomer B in a vacuum drying oven at a temperature of 30°C to 50°C for 12h to 24h to remove water to obtain dry polymer monomer A and dry polymer monomer Body B; the polymer monomer A is polylactic acid, polycaprolactone, polybutylene succinate, polyurethane, polylactide-glycolide, polymethyl methacrylate, polycarbonate and one or a mixture of several of them in polyacrylate; the polymer monomer B is bioactive glass, polylactide, polyethyleneimine, polytrimethylene carbonate and polylactic acid glycolic acid one or a mixture of several of them;

[0023] 2. Mix the dried polymer monomer A and the dried polymer monomer B and carry out the copolymerization reaction to obtain a binary shape memory polymer, and carry out the reaction in a vacuum drying oven at a temperature of 30°C to 50...

specific Embodiment approach 2

[0027] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the polymer monomer A in step 1 is polylactic acid. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0028] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the polymer monomer B in step 1 is polytrimethylene carbonate. Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention provides a preparation method of a shape memory polymer and application thereof in 4D (four-dimensional) printing, and relates to the field of printing of intelligent materials, in particular to a preparation method of the shape memory polymer and application thereof. The shape memory polymer aims at solving the problems of the prior art that any shape cannot be printed according toactual requirements; the existing shape memory polymer has higher Tg, and cannot meet the requirement of low-powder driving and the biomedical demand. The preparation method comprises the following steps of performing copolymerization on two types of polymer monomers with good biocompatibility according to a certain ratio, so as to obtain a binary copolymer; dissolving into an organic solvent withlow boiling point and high volatilizing property, and treating by ultrasonic waves, so as to obtain a shape memory polymer solution. The prepared shape memory polymer is characterized in that the movement direction, movement speed and applied pressure of a three-dimensional movement platform along axes X, Y and Z are controlled by software, and then pressure is applied to a high-pressure glue dispensing needle cylinder with a miniature needle head by an air pump, so as to build a required three-dimensional structure. The shape memory polymer can be applied to the 4D printing.

Description

technical field [0001] The invention relates to the field of intelligent material printing, in particular to a preparation method and application of a shape memory polymer. Background technique [0002] The application field of 3D printing technology continues to expand with the advancement of technology, and at the same time, the concept of 4D printing has attracted more attention. The proposal of 4D printing technology is based on the additive manufacturing technology of intelligent materials and structures. The shape of the solid structure manufactured by 4D printing can change with the external environment. 3D printing is static, but 4D printing is dynamic. In fact, 4D printing is a technology that uses materials that can automatically deform to achieve printing. After the scientists complete the modeling and set the trajectory through the software, they use printing technology to preliminarily print a deformable material. According to the initial setting, the deformab...

Claims

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Application Information

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IPC IPC(8): C08G81/00C08J3/09B29C64/112B33Y10/00
CPCB33Y10/00C08G81/00C08J3/09C08J2387/00
Inventor 刘彦菊冷劲松万雪
Owner HARBIN INST OF TECH
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