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A preparation method of density-controllable profiling rotator

A technology of revolution and density, which is applied in the direction of textiles and papermaking, needle punching machines, non-woven fabrics, etc., can solve the problems that the density cannot be adjusted, etc., achieve good interlayer bonding strength, high profiling accuracy, and improve profiling sexual effect

Active Publication Date: 2019-06-21
NANJING FIBERGLASS RES & DESIGN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the defect in the prior art that the density can not be prepared and the center-symmetrical rotator with any variable cross-section can not be prepared, the present invention provides a preparation method of a profiling rotator with controllable density

Method used

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  • A preparation method of density-controllable profiling rotator
  • A preparation method of density-controllable profiling rotator
  • A preparation method of density-controllable profiling rotator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Example 1: Preparation of carbon fiber rotary fabric, thick at both ends and thin in the middle, the outer diameter of the large end (both ends) is Ф350 mm, the inner diameter of the large end is Ф310 mm, the diameter of the throat (the smallest diameter in the middle) is Ф100 mm, and the height (rotary body axis To length) is 220mm. The design unit layer uses a layer of 3K twill carbon cloth + a layer of fiber mesh tire + a layer of 12K carbon cloth reinforcement layer to form a unit layer. The preparation steps are as follows:

[0047] ⑴According to the shape characteristics of the fabric, take the minimum throat diameter of the carbon fiber rotary fabric as the dividing point, and divide it into two parts: left and right. Arranged from left to right, the lengths are 80 2.5-inch needles, 50 3.0-inch needles, and 80 3.5-inch needles. , 50 3.0-inch felting needles, 80 2.5-inch felting needles, the arrangement of the needles adapts to the change of the product busbar, an...

Embodiment 2

[0056] Embodiment 2: as figure 2 As shown, the quartz fiber cone fabric is prepared: the shape is cone-shaped, the outer diameter of the big end is Ф500 mm, the inner diameter of the big end is Ф460 mm, and the height (axial length) is 600 mm. The design unit layer adopts a layer of quartz fiber mesh tire + a layer of quartz fiber satin cloth to form a unit layer. The preparation steps are as follows:

[0057] ⑴According to the shape characteristics of the tapered fabric, in the transition area from the big end to the top of the product, 80 2.5-inch needles, 60 3.0-inch needles, and 40 3.5-inch needles are arranged in sequence. Approximate profiling;

[0058] (2) Apply hot melt adhesive on the surface of the prepared cone mold, and at the same time, cut the chemical fiber felt material with a thickness of 15mm (the weight is 2500g / m 2 ) is in the form of a strip, wound from the small end of the mold to the large end until the package is firmly pasted;

[0059] ⑶ Add 120g / c...

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Abstract

The invention discloses a method for preparing a density-controllable profiling rotary body. More than two unit layers are sequentially stacked, followed by profiling acupuncture and stitching to obtain a density-controllable profiling rotary body. The invention can realize the profiling needle-punching forming of a center-symmetrical rotator with controllable density and arbitrary variable cross-section, and can be applied to aerospace ablation-resistant parts and the like.

Description

technical field [0001] The invention relates to a method for preparing a profiled revolving body with controllable density, and belongs to the technical field of revolving body forming. Background technique [0002] Acupuncture technology is a non-woven fabric technology derived from the textile industry. It uses specially designed needles with barbs to perform acupuncture on base fabrics, mesh tires or composite laminated materials. When the needle returns to its original position, some The in-plane chopped fibers are transferred to the thickness direction, and the layers of adjacent layers are all formed by this needle-punching method; the needle-punching technology has been adopted due to its advantages of rapidity and low cost, and the ability to meet the requirements of some specific use environments. It has been widely used in advanced aviation and aerospace vehicles and has excellent development prospects. [0003] In the prior art, the profiling rotary fabric is mos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/498D04H1/76D04H18/02D04H1/4242D04H1/4209B29B11/14
CPCD04H1/4209D04H1/4242D04H1/498D04H1/76D04H18/02B29B11/14B29C49/071B29C2949/0715
Inventor 李博乔志炜胡方田刘延友房坤鹏王群
Owner NANJING FIBERGLASS RES & DESIGN INST CO LTD
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