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Method for preparing complex soft structure by using water-soluble template

A water-soluble template and soft structure technology, which can be used in coatings and other directions to solve the problems of unstable mechanical properties, harsh processing conditions, and high temperature of complex soft structures.

Pending Publication Date: 2022-03-04
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing complex soft body structures using water-soluble templates, which solves the problems of harsh processing conditions, high temperature requirements and unstable mechanical properties of the formed complex soft body structures in the prior art

Method used

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  • Method for preparing complex soft structure by using water-soluble template
  • Method for preparing complex soft structure by using water-soluble template
  • Method for preparing complex soft structure by using water-soluble template

Examples

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Embodiment 1

[0048] This embodiment provides a method for preparing a complex soft body structure using a water-soluble template. Taking a soft gripper as an example, its structural diagram is as follows figure 1 Shown, its preparation method comprises the following steps:

[0049] (1) According to figure 1 The outer contour of the soft body structure is shown, and a non-water-soluble hard outer cavity mold 1 is designed, and its structural schematic diagram is as follows figure 2 As shown, the hard outer cavity mold 1 is divided into two parts: an upper mold 2 and a lower mold 3. The upper mold is composed of a central mold 4 and a left and right mold 5. The central mold 4 is in the center, and a gate 6 and a melting channel 7 are left in it. And buckle 8; using SLS selective laser sintering technology to manufacture hard outer cavity mold 1, the material selected is HP 7500 high-performance nylon;

[0050] according to figure 1 As shown in the internal outline of the soft body struct...

Embodiment 2

[0055] This example provides a method for preparing a complex soft body structure using a water-soluble template. For details, see Example 1. The difference is that the preparation method of the non-water-soluble hard outer cavity mold in step (1) is SLA light-curing molding. The material is BASF ST45 tough resin.

Embodiment 3

[0057] This example provides a method for preparing a complex soft body structure by using a water-soluble template. For details, refer to Example 1. The difference is that the curing temperature in step (3) is 73° C., and the curing time is 9 hours.

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Abstract

The invention belongs to the technical field of soft material preparation, and discloses a method for preparing a complex soft structure by using a water-soluble template. The method comprises the steps that firstly, an outer cavity mold and an inner cavity mold plate are designed according to the outer contour and the inner contour of the soft structure, and a water-insoluble hard outer cavity mold and a water-soluble inner cavity mold plate are prepared through the 3D printing technology; assembling the inner cavity template and the outer cavity mold, injecting a soft material, vacuumizing, and curing; and finally, the soluble inner cavity template is cleaned and removed through a water bath and a water pump, and a complex soft structure is obtained. According to the preparation method, upper and lower mold splitting and glue bonding are not needed, the problems of unstable mechanical property and poor durability of a soft structure caused by a bonding surface are solved, high temperature and harsh processing conditions are not needed, curing molding can be performed at 60-80 DEG C, the used soluble inner cavity template is made of a water-soluble pollution-free material, and the cost is low. The template can be removed through water bath dissolution, and the method is a green and environment-friendly processing method.

Description

technical field [0001] The invention relates to the technical field of soft material preparation, in particular to a method for preparing a complex soft structure using a water-soluble template. Background technique [0002] Soft materials often have the advantages of strong adsorption capacity, good thermal stability, and stable chemical properties, and can work under various working conditions. It has mechanical properties such as tension, compression, torsion resistance, and shear resistance. With the development of science and technology, many biocompatible materials have been derived, which are mostly used in wearable equipment and medical equipment. Soft materials have been widely used in real society because of their good material properties and adaptability. The soft structure takes advantage of the deformable characteristics of soft materials, liberates the constraints of the degree of freedom in traditional structural design, and is widely involved in various indu...

Claims

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Application Information

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IPC IPC(8): B29C45/17B29C45/26B29C45/00
CPCB29C45/1742B29C45/2602B29C45/0053B29C2045/2604
Inventor 王周义翁志远尹潇姬科举戴振东
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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