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Four-dimensional printing method capable of programming curvature changes

A curvature change and 4D technology, applied in the field of additive manufacturing, can solve problems such as poor programming ability and poor repeatability of material deformation, and achieve the effects of low cost, easy-to-obtain materials and simple process

Inactive Publication Date: 2017-05-31
JILIN UNIV
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AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned problems such as poor shape programming ability and poor material deformation repeatability, the present invention proposes a 4D printing method with programmable curvature change

Method used

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  • Four-dimensional printing method capable of programming curvature changes
  • Four-dimensional printing method capable of programming curvature changes
  • Four-dimensional printing method capable of programming curvature changes

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Embodiment Construction

[0033] see figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, a 4D printing method with programmable curvature changes includes the following steps:

[0034] 1. Selection of active layer material 1 and passive layer material 2:

[0035] Selection of active layer material 1: Select one-component, high-strength, high-modulus polyurethane water-swellable rubber cured by room temperature moisture;

[0036] Selection of passive layer material 2: Select polyurethane moisture-cured rubber that does not expand when exposed to water;

[0037] 2. Model establishment: Design the initial state according to the expected deformation shape, including the geometric shape and the distribution state of the active layer material 1 and the passive layer material 2 respectively. The width of the model deformation unit is 10mm, and the height of the active layer material 1 is 3mm. Passive layer material 2 has a height of 3 mm and a lengt...

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Abstract

The invention relates to a four-dimensional printing method capable of programming curvature changes. The four-dimensional printing method comprises the following steps of 1 active and passive material selecting; 2 model establishing, wherein the initial states, comprising the geometrical shapes and the distribution states of an active material and a passive material, of models are designed according to the needed expected deformation shapes; 3 printing molding; 4 post-processing curing; 5 four-dimensional printing self-deforming. Therefore, the geometric models of the active material and the passive material in a molded component are designed and printed by combining a double-layer swelling deformation model theory, and then the four-dimensional printing method capable of programming the curvature changes is achieved; deformation achieves the higher designability and intelligent performance, and the advantages that the technology is simple, the materials are easy to obtain, and the cost is low are achieved.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing, in particular to a 4D printing method with programmable curvature changes. Background technique [0002] On February 25, 2013, the Massachusetts Institute of Technology demonstrated 4D printing technology for the first time at the TED 2013 conference. After three years of development, researchers from various countries have more specific thinking on 4D printing technology: four-dimensional printing (4D printing) refers to adding "time" as the fourth dimension on the basis of three-dimensional printing (3D printing). Additive manufacturing technology that causes 3D printed objects to change in shape or physicochemical aspects over time under the stimulation of the environment or through cell fusion or self-assembly. Whether it is from the trend of technological development or the value of technology, 4D printing is more forward-looking and subversive. In the past two years, althou...

Claims

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Application Information

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IPC IPC(8): B29C64/118B29C61/06B33Y10/00B33Y80/00
CPCB29C61/0616B33Y10/00B33Y80/00
Inventor 周雪莉任露泉刘慧力刘庆萍宋正义赵彻李冰倩薛婧泽刘清荣李卓识于征磊
Owner JILIN UNIV
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