Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Integrated forming method of carbon fiber three-way fabric composite material reflecting surface for umbrella antenna

A three-way fabric and composite material technology, applied in antennas, folded antennas, antennas suitable for movable objects, etc., can solve problems such as the influence of profile accuracy, and achieve the effect of reducing weight, good appearance quality and good flexibility

Pending Publication Date: 2021-11-30
XIAN INSTITUE OF SPACE RADIO TECH
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Therefore, it is necessary to provide a carbon fiber composite material reflective surface forming method, which overcomes the problems of traditional cable-net structure umbrella antenna pretension and anti-pillar effect on the surface accuracy while providing a high-performance umbrella antenna reflective surface

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Integrated forming method of carbon fiber three-way fabric composite material reflecting surface for umbrella antenna
  • Integrated forming method of carbon fiber three-way fabric composite material reflecting surface for umbrella antenna
  • Integrated forming method of carbon fiber three-way fabric composite material reflecting surface for umbrella antenna

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0063] (1) Preparation of raw materials: Coat ZS-NJ-D955-6 organic silica gel on the surface of all carbon fiber tows, vulcanize at room temperature, and use them as raw materials for three-way fabric weaving. The carbon fiber tow is polypropylene-based carbon fiber, the tow size is 1K, the longitudinal elastic modulus of the tow is 96.6GPa, the transverse elastic modulus is 3.8MPa, and the shear elastic modulus is G 12 =G 13 =0.98MPa and G 23 = 1.36 MPa.

[0064] (2) Carbon fiber three-way fabric weaving: fix the carbon fiber tow in the direction of 60°, after the tow is fixed in the direction of 60°, take the carbon fiber tow and fix it in the direction of -60°, and finally use the needle to guide the carbon fiber according to the figure 1 and figure 2 Weave carbon fiber tows in the 0° direction according to the interweaving law to form a carbon fiber three-way fabric with a regular hexagonal pore network structure, weaving a total of 30 square meters. The diameter of t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Elastic modulusaaaaaaaaaa
Shear modulus of elasticityaaaaaaaaaa
Thermal expansion coefficientaaaaaaaaaa
Login to View More

Abstract

The invention provides an integrated forming method of a carbon fiber three-way fabric composite material reflecting surface for an umbrella antenna, which comprises the following steps of: weaving carbon fiber tows into a planar three-way fabric according to a specific interweaving rule, then spraying organic silica gel on the surface of the three-way fabric, paving the sprayed three-way fabric on the surface of an umbrella antenna emitting surface forming mold, and adopting bag pressure room temperature vulcanization molding, wherein the prepared composite material has a series of advantages of high strength, large specific modulus, good plasticity, high temperature resistance, impact resistance, fatigue resistance, good overall structural performance and the like, the composite material is used as a reflecting surface to be connected with an antenna framework, and antenna reflecting surface installation is completed. The antenna reflecting surface manufactured through the integrated forming method has the advantages of being preformed, free of stress and high in stability, the problem that the pretension and the reverse pillow effect of a traditional cable net structure umbrella antenna affect the profile precision is solved, the machining efficiency of the umbrella antenna reflecting surface is effectively improved, batch production can be achieved, and industrialization is easy.

Description

technical field [0001] The invention belongs to the technical field of space antennas, in particular to a method for integrally forming a reflective surface of a carbon fiber three-way fabric composite material for an umbrella antenna. Background technique [0002] With the rapid development of aerospace technology and new requirements for deployable antennas such as umbrella antennas for new space launch missions, the development of lightweight, high-precision, deployable antennas is an important topic at present. Existing large-scale deployable reflectors usually use metal mesh as the reflective surface. The flexibility of the metal mesh is conducive to the reconstruction, folding and unfolding of the reflective surface, but the metal mesh must be tensioned under certain boundary conditions to form the reflective surface. The back pillow effect is caused, which greatly reduces the surface accuracy of the reflector. As a new type of lightweight structural material, carbon ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01Q15/16H01Q1/28H01Q1/08
CPCH01Q15/142H01Q15/161H01Q1/28
Inventor 刘婷婷范叶森华岳师甜李欢笑徐文强邹少存
Owner XIAN INSTITUE OF SPACE RADIO TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com