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Tubular three-dimensional fabric and rapid forming preparation method thereof
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A three-dimensional fabric and tubular technology, which is applied to the field of tubular three-dimensional fabric and its rapid prototyping preparation, can solve the problems of poor torsion resistance, easy delamination, and low weaving efficiency of the fabric.
Pending Publication Date: 2021-05-11
NANJING FIBERGLASS RES & DESIGN INST CO LTD +1
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Problems solved by technology
[0003] In order to solve the problems of poor torsion resistance, easy delamination, and poor uniformity of the fabric in the prior art, as well as the complex preparation process, single fabric cross-sectional shape, and low weaving efficiency, the present invention proposes a tubular three-dimensional fabric and its rapid prototyping preparation. method
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
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Embodiment 1
[0042] refer to Figure 4 , the eight-sided tubular three-dimensional fabric prepared in this example is about 1000mm long, and the cross-sectional shape is octagonal. The inner side length of the small end is 30mm, the thickness of the small end is 10mm, and the thickness of the large end is 15mm, that is, the fabric cross-section is not equal. The volume content is more than or equal to 45%, the axial tensile strength of the octagonal tubular three-dimensional fabric composite material is close to the tensile strength in the ±45° direction, and the tensile properties are close to the shear properties.
[0043] The raw material is woven and woven using one or more high-performance fibers, including organic and inorganic fibers. In this embodiment, the carbon fiber of the same fiber material T300-3K is selected as a representative.
[0044] Multi-layer fabrics can be one or more structures including twill, satin, unidirectional, plain, warp knitting, two-dimensional weaving s...
Embodiment 2
[0052] refer to Figure 8 , the hexagonal tubular three-dimensional fabric prepared in this example is about 1000mm long, and the cross-sectional shape is hexagonal. The tensile strength of the material in the tubular direction is close to the tensile strength in the ±60° direction, and the tensile properties are close to the shear properties.
[0053] The raw material is woven and woven using one or more high-performance fibers, including organic and inorganic fibers. In this embodiment, the carbon fiber of the same fiber material T300-3K is selected as a representative.
[0054] Multi-layer fabrics can be one or more structures including twill, satin, unidirectional, plain, warp knitting, two-dimensional weaving structure, shallow cross-curved connection, shallow cross-direct connection, deep cross-direct connection, three-dimensional multi-directional, etc. The embodiment is represented by a two-dimensional triaxial braided structure, the fiber has high continuity in othe...
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
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Abstract
The invention discloses a tubular three-dimensional fabric and a rapid forming preparation method thereof. The tubular three-dimensional fabric is composed of a multi-layer fabric and normal fibers, wherein the multi-layer fabric is formed by overlapping single-layer copied woven sleeves designed according to fabric performance requirements layer by layer; the single-layer copied woven sleeves can be woven and formed through one or more continuous weaving processes according to designed weaving parameters; and the normal fibers can be introduced through one or more processes of sewing, Z-Pin, needling and the like. The tubular three-dimensional fabric disclosed by the invention has the advantages of various weave structures, large fabric size control range, various section shapes, strong designability, strong universality, suitability for continuous weaving, excellent interlayer performance and the like, so that the fabric can meet the molding requirements of composite materials in application requirements of materials with complex shapes and complex stress loads; and the fabric can be widely applied to the fields of spaceflight, aviation, ships, automobiles, buildings and the like.
Description
technical field [0001] The invention belongs to the technical field of three-dimensional fabric weaving, and in particular relates to a tubular three-dimensional fabric and a rapid prototyping preparation method thereof. Background technique [0002] Three-dimensional fabric-reinforced composites are necessary materials for advanced multifunctional composite parts and main load-bearing composite parts due to their high specific strength, high specific modulus, good impact resistance, and strong designability. With the wide application of three-dimensional fabrics in aerospace, transportation, national defense protection, construction and other fields, the requirements for material properties of tubular parts are more stringent, and some tubular parts require fabrics to not only bear torsional loads, but also withstand tension and bending compression and interlayer loads. At present, a lot of work has been done on thin-walled two-dimensional tubular fabrics at home and abroa...
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
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