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Shape memory inflatable tube structure and preparation method thereof

An inflatable tube and memory technology, which is applied in the field of shape memory inflatable tube structure and its preparation, can solve the problems of difficulty in controlling the unfolding and curling process, restrict the application of the inflatable antenna, etc., so as to facilitate the curling and unfolding process and reduce the difficulty of curling and unfolding. , the effect of high system reliability

Active Publication Date: 2019-03-08
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Inflatable antennas have become a research hotspot in the field of aerospace structures in recent years due to their advantages of light weight and small storage volume. The shortcomings of the control limit the application of the air-filled antenna

Method used

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  • Shape memory inflatable tube structure and preparation method thereof
  • Shape memory inflatable tube structure and preparation method thereof
  • Shape memory inflatable tube structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] In order to solve the problem that the expansion and curling process of the inflatable tube of the inflatable antenna is difficult to control, the present invention provides a shape memory inflatable tube structure, see figure 1 , figure 2 As shown, the shape memory inflatable tube structure includes a shell structure 1 and a pneumatic structure 2, wherein: the pneumatic structure 2 is arranged inside the shell structure 1; the shell structure 1 includes a tube body 11 and at least one heating film 12; the heating film 12 is attached to On the outer wall of the tube body 11; the material of the tube body 11 is a shape memory composite material; the pneumatic structure 2 includes a PET braided net tube 21 and a latex tube 22; the latex tube 22 is arranged inside the PET braided net tube 21.

[0046] Shape memory polymers have a specific initial shape, and after being deformed and fixed under certain conditions, they can restore their original shape through stimulation b...

Embodiment 2

[0054] On the basis of Example 1, in the shape-memory inflatable tube structure provided by this example, the shape-memory composite material includes epoxy-based shape-memory polymer and carbon fiber, wherein the role of epoxy-based shape-memory polymer is to control the tube body 11, the effect of carbon fiber is to enhance the strength of the pipe body 11.

[0055] The tube body 11 is made of epoxy-based shape memory polymer and carbon fiber, so that the shape of the tube body 11 is easy to control, and the strength of the tube body 11 can also be enhanced, and the surface tube body 11 is damaged, prolonging the use of the tube body 11 life.

[0056] The glass transition temperature of the shape memory polymer is related to the specific polymer type. The transition temperature of the epoxy-based shape memory polymer in this example is 120°C, and the glass transition temperature is suitable for the use environment of the air-filled antenna. , when the tube body 11 is not he...

Embodiment 3

[0060] On the basis of embodiment two, see image 3 As shown, the number of heating film 12 in this embodiment is one, and one heating film 12 is arranged at the middle position of the tube body 11 along the axial direction, and the length of the heating film 12 is shorter than the length of the tube body 11 .

[0061] Stick the heating film 12 on the middle section of the tube body 11 along the axial direction of the tube body 11, turn on the heating film 12 and turn on the power supply, the heating film 12 will heat the tube body 11, when the tube body 11 around the heating film 12 After the temperature rises to the glass transition temperature of the epoxy-based shape memory polymer, the tube body 11 is bent and shaped, and the tube body 11 changes from a straight shape to a U shape. After the power is turned off and the temperature is lowered, the tube body 11 maintains the U shape. shape, thereby reducing the volume of the inflatable tube and facilitating the transportati...

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Abstract

The invention discloses a shape memory inflatable tube structure and a preparation method thereof, and relates to the technical field of the inflatable antenna. The shape memory inflatable tube structure comprises a shell structure and an aerodynamic structure; the aerodynamic structure is arranged in a shell structure; the shell structure comprises a tube body and at least one heating film; the heating film is adhered on an outer wall of the tube body; the material of the tube body is the shape memory composite material; the aerodynamic structure comprises a PET woven net tube and a latex tube; the latex tube is arranged in the PET woven net tube. The shape memory inflatable tube structure provided by the invention selects the shape memory composite material as the tube body, the tube body is heated through the heating film to control the unfolding of the inflatable tube structure, so that the curling and unfolding process of the inflatable tube can be conveniently controlled, the system structure is less in control loop and high in system reliability.

Description

technical field [0001] The invention relates to the technical field of inflatable antennas, in particular to a shape-memory inflatable tube structure and a preparation method thereof. Background technique [0002] Inflatable antennas have become a research hotspot in the field of aerospace structures in recent years due to their advantages of light weight and small storage volume. At present, the inflatable tubes of inflatable antennas are made of film materials, and the inflatable tubes made of film materials are difficult to unfold and curl. The shortcomings of control limit the application of inflatable antennas. [0003] In view of the above-mentioned defects, the creator of the present invention has finally obtained the present invention through long-term research and practice. Contents of the invention [0004] In order to solve the above-mentioned technical defects, the technical solution adopted by the present invention is to provide a shape-memory inflatable tube...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/08
CPCH01Q1/081B29C70/00
Inventor 刘彦菊刘立武闫俣李钦宇冷劲松
Owner HARBIN INST OF TECH
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