Weaving method of high-temperature-resistant composite material container pre-woven body

A composite material, high temperature resistant technology, applied in the field of three-dimensional weaving, can solve the problems of uneven density, difficult weaving, poor mechanical properties, etc., to achieve high versatility, good mechanical properties, and ensure the effect of structural stability.

Active Publication Date: 2021-10-08
XI'AN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a weaving method for a prefabricated body of a high-temperature-resistant composite material container, which solves the problems of uneven density of existing weaving, exposed thread ends after adding or subtracting yarns, relatively difficult weaving, and poor mechanical properties

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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  • Weaving method of high-temperature-resistant composite material container pre-woven body
  • Weaving method of high-temperature-resistant composite material container pre-woven body
  • Weaving method of high-temperature-resistant composite material container pre-woven body

Examples

Experimental program
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Effect test

Embodiment 1

[0024] In this embodiment 1, based on figure 1 Explains how to hang yarn and where to knit yarn.

[0025] Such as figure 1 As shown, the two knitting yarns are U-shaped and crossed to hook each other, and the two ends of the knitting yarn 1 are respectively hung on the innermost ring on the same side and the yarn carrier of the adjacent ring, and the knitting yarn 2 is connected with the knitting yarn. Yarn 1 is hung symmetrically at the other end, and all weaving yarns can be hung in groups of two in this way. The gaps between the yarns are where the knitting yarns are added.

Embodiment 2

[0027] In this second embodiment, based on Figure 2-6 A knitting cycle process of knitting + three-dimensional knitting is illustrated.

[0028] figure 2 Shown is the first step of circular 3D knitting: turn 2 and 4 turns clockwise, 3 and 5 turns counterclockwise.

[0029] image 3 Shown is the second step of circular 3D knitting: Alternating radial movements of the yarn.

[0030] Figure 4 Shown is the third step of circular three-dimensional knitting: turn 2 and 4 turns counterclockwise, and turn 3 and 5 turns clockwise.

[0031] Figure 5 Shown is the fourth step of circular three-dimensional knitting: press figure 1 Add knitting yarn at the position shown, press Figure 5 The method shown starts with the first round of knitting from the gap between the 1st and 2nd rounds; then the needle exits from the needle entry position, and then knits the gaps of the 2nd and 3rd rounds and knits for a round; proceed alternately in this way until the 5th and 6th rounds Slit k...

Embodiment 3

[0034] In Embodiment 3, based on Figure 7-10 Describe the change of yarn arrangement in knitting + three-dimensional knitting. Figure 7 Shown is a 5×24 yarn arrangement, wherein 5: there are 5 radial yarns, and 24: circumferential yarns are 24 rows. Figure 8 It is to change the yarn arrangement of 5×24 into the yarn arrangement of 4×30 under the premise that the total number of yarns remains unchanged. Figure 9 It is to change the yarn arrangement of 4×30 into the yarn arrangement of 3×40. Figure 10 It is to change the yarn arrangement of 3×40 into the yarn arrangement of 2×60. Wherein, cross-transformation is required when performing transformation, and the yarn arrangement of 5×24 is changed into 4×30 yarn arrangement as an example. Divide the 5×24 yarn arrangement into 6 groups, and each group has 4 rows, then change the 5×4 yarn arrangement of each group into 4×5 yarn arrangement, and realize the 5× The 24 yarn pattern becomes a 4x30 yarn pattern.

[0035] As lon...

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 weaving method of a high-temperature-resistant composite material container pre-woven body. The weaving method comprises the following steps of weaving by using a knitting and three-dimensional weaving mode, adding an independent yarn while performing radial and circumferential four-step three-dimensional weaving, and knitting the yarn for a circle in the circumferential direction by using a knitting mode, so that three-dimensional weaving and knitting are carried out alternately. After a certain length is woven, the arrangement position of a yarn carrier is expanded outwards according to a certain rule, three-dimensional weaving and knitting are carried out after expansion, finally, the diameter of the woven fabric is gradually expanded to form a container, and knitting yarn is used for edge sealing. The method ensures that the whole container pre-woven body does not have any defects of faults, different gap sizes and the like, the circumferential knitting yarns ensure that the container pre-woven body can bear relatively large internal pressure, and the structural stability is ensured; and the integrally woven and formed container is uniform in weaving density, free of defects such as faults and good in mechanical property, and the weaving method is suitable for weaving any conical or cylindrical containers and has relatively high universality.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional weaving, and in particular relates to a weaving method for a prefabricated body of a high-temperature-resistant composite material container. Background technique [0002] Three-dimensional overall braided composite materials have been widely used in aerospace, construction, transportation and other fields due to their excellent properties such as high temperature resistance, ablation resistance, and high strength. Among the three-dimensional weaving methods, the most commonly used method is four-step weaving. The simple use of three-dimensional weaving to weave the cone-shaped shell is realized by expanding the mold or increasing or decreasing the yarn, but the density of the weaving is not uniform, and the thread ends will be exposed after the yarn is increased or decreased, making it difficult to weave. Performance is poor. On the basis of three-dimensional weaving, by changing the ...

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04B39/00
CPCD04B39/00
Inventor 贺辛亥尚星宇梁军浩张婷王斌宁志新周光瑞周蕊初晓佳
Owner XI'AN POLYTECHNIC UNIVERSITY
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