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Preparation of shape memory micro-nano composite material and application of shape memory micro-nano composite material in 4D (four-dimensional) printing

A composite material, micro-nano technology, applied in the direction of additive processing, etc., can solve the problems of restricting the development of 4D printing technology, difficulty in realizing three-dimensional molding, and impact, and achieve the effect of being suitable for process requirements, high processing precision, and wide application range

Active Publication Date: 2016-05-25
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although shape memory micro-nano composites have shown great application potential and practical value in the field of 4D printing, their application is still in its infancy.
One of the important reasons is that due to the influence of traditional molding processes, shape memory micro-nano composite materials are usually processed into simple two-dimensional shapes such as plates, sheets, and films, and it is difficult to achieve three-dimensional molding.
This greatly affects and limits the development of 4D printing technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0023] Embodiment 1: The preparation method of the shape-memory nanocomposite material of this embodiment is carried out according to the following steps:

[0024] 1. Dry the substance containing active hydrogen in the molecular chain in a vacuum drying oven at a temperature of 40°C to 60°C for 12h to 24h to remove water, so as to eliminate the influence of moisture on the experiment to the greatest extent, and obtain the dry molecular chain containing active hydrogen the substance;

[0025] 2. The hydrogen abstraction type photoinitiator, functional micro-nano particles, substances containing active hydrogen in the molecular chain and low-boiling-point high-volatility organic solvents according to (4-10): (10-20): (80-120) : The mass ratio of (1000~1500) is placed in a container for mechanical stirring for 18h~26h to obtain a uniformly mixed solution; then the resulting solution is poured into the container, and the container is opened and placed in an ultrasonic dispersion d...

specific Embodiment approach 2

[0030] Embodiment 2: This embodiment is different from Embodiment 1 in that the substance containing active hydrogen in the molecular chain is polylactic acid. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0031] Specific embodiment three: the difference between this embodiment and specific embodiment one is that in step 2, the hydrogen abstraction type photoinitiator, functional particles, substances containing active hydrogen in the molecular chain and low-boiling-point high-volatility organic solvents are in accordance with 5: The mass ratio of 11:100:1200 was placed in a container for mechanical stirring for 24 hours to obtain a uniformly mixed solution. Other steps and parameters are the same as those in the first embodiment.

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Abstract

The invention discloses preparation of a shape memory micro-nano composite material and application of the shape memory micro-nano composite material in 4D (four-dimensional) printing. The invention relates to the field of the 4D printing of intelligent materials, in particular to the field that the shape memory micro-nano composite material can be applied to a 4D printing technology. The invention aims to solve the technical problem of difficulty in realizing the 4D printing of the shape memory micro-nano composite material. The shape memory micro-nano composite material disclosed by the invention is formed by means of mixing a hydrogen-abstracting type photoinitiator, functional micro-nano particles, a substance containing active hydrogen in a molecular chain and an organic solvent with a low boiling point and high volatility according to a certain mass, and performing ultrasonic treatment. The composite material is applied to the 4D printing technology by means of controlling a motion direction, a motion speed and an applied pressure of a three-dimensional movement platform on an X-axis, a Y-axis and a Z-axis through software, applying pressure force on a high-pressure dispensing needle cylinder equipped with a micro-needle head through an air pump, and constructing a required three-dimensional structure by means of casting according to a constructed model. The shape memory micro-nano composite material disclosed by the invention is applied to the 4D printing.

Description

technical field [0001] The invention relates to the field of 4D printing of smart materials, in particular to the field of a shape memory micro-nano composite material that can be applied to 4D printing technology. Background technique [0002] The 3D printing industry has just started, and the concept of 4D printing has already emerged. 4D refers to the addition of time on the basis of 3D printing, thus becoming 4D technology. In fact, it is a kind of 3D printing that uses materials that can automatically deform: After the scientists complete the modeling and set the time through the software, they use 3D printing technology to initially print a deformed material. According to the initial setting, the deformed material It will automatically transform into the desired shape at the specified time. 4D printing is a technology that will revolutionize the fields of software, robotics, art and even space exploration. The potential advantages of 4D printing are attracting great ...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08K3/22C08J3/09B29C67/00B33Y30/00
CPCB33Y30/00C08J3/09C08J2367/04C08K3/22C08K2003/2275C08K2201/011C08L67/04
Inventor 冷劲松刘彦菊魏洪秋
Owner HARBIN INST OF TECH
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