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A low/negative thermal expansion composite material 2.5d multi-scale preform and its preparation method

A technology of negative thermal expansion and composite materials, applied in chemical instruments and methods, textiles and papermaking, lamination auxiliary operations, etc., can solve problems such as complex processes, and achieve simple processes, enhanced reinforcement effects, and low manufacturing costs.

Active Publication Date: 2020-05-05
XI'AN PETROLEUM UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can successfully prepare a prefabricated body reinforced by carbon fiber and carbon nanotube hybrid, but the method is complicated, and the CVD method has high requirements for equipment and technology

Method used

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  • A low/negative thermal expansion composite material 2.5d multi-scale preform and its preparation method
  • A low/negative thermal expansion composite material 2.5d multi-scale preform and its preparation method
  • A low/negative thermal expansion composite material 2.5d multi-scale preform and its preparation method

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preparation example Construction

[0029] like image 3 As shown, a method for preparing a low / negative thermal expansion composite material 2.5D multi-scale prefabricated body of the present invention comprises the following steps:

[0030] 1. Put the cut single-layer carbon fiber non-weft cloth or carbon fiber fabric into the container, so that it is flat on the bottom of the container;

[0031] 2. Pour an appropriate amount of distilled water into the container, put the negative expansion particles into the distilled water, and stir evenly;

[0032] 3. Ultrasonic the liquid with carbon fibers and negative expansion particles stirred in step 2 for 5-10 minutes, so that the particles are evenly dispersed and enter the fiber bundles and between the bundles;

[0033] 4. Let the ultrasonicated liquid in step 3 stand for 12-24 hours, so that the negative expansion particles evenly settle on the single-layer carbon fiber non-weft cloth or carbon fiber fabric to form a discontinuous reinforcement layer with uniform...

Embodiment 1

[0038] In this example, the continuous fiber layer uses M40 graphite fiber non-weft cloth, and the layering method is unidirectional layering, with a total of 6 layers; the negative expansion particles use micron-sized zirconium tungstate.

[0039] 1. Put a 75mm×75mm graphite fiber non-weft cloth into the beaker and spread it on the bottom of the beaker.

[0040] 2. Pour 500ml of distilled water into the beaker, put the prefabricated body with a volume fraction of 0.1% zirconium tungstate into the distilled water, and stir it electromagnetically for 2 minutes;

[0041] 3. Use an ultrasonic generator to sonicate the liquid with zirconium tungstate stirred uniformly in step 2 under the condition of 20kHz / 100W for 6 minutes, so that the zirconium tungstate is evenly dispersed;

[0042]4. Let the ultrasonicated liquid in step 3 stand for 15 hours, so that the zirconium tungstate evenly settles on the single-layer graphite fiber non-weft cloth to form a zirconium tungstate layer wi...

Embodiment 2

[0047] In this example, the continuous fiber layer uses M40 graphite fiber non-weft cloth, and the layering method is orthogonal layering; the discontinuous reinforcing layer uses zirconium tungstate. The multi-scale prefabricated body is prepared by laminating one layer of 0° non-weft cloth, one layer of zirconium tungstate, and one layer of 90° non-weft cloth, and the number of laminations of non-weft cloth is 7 layers.

[0048] 1. Put a 75mm×75mm graphite fiber non-weft cloth into the beaker and spread it on the bottom of the beaker.

[0049] 2. Pour 500ml of distilled water into the beaker, put the prefabricated body with a volume fraction of 0.1% zirconium tungstate into the distilled water, and stir it electromagnetically for 2 minutes;

[0050] 3. Use an ultrasonic generator to sonicate the liquid with zirconium tungstate stirred uniformly in step 2 under the condition of 20kHz / 100W for 7 minutes, so that the zirconium tungstate is evenly dispersed;

[0051] 4. Let the...

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Abstract

The invention discloses a low / negative thermal expansion composite 2.5D multi-scale preform and a preparation method thereof. The preparation method includes: adding single-layer fiber nonwoven or fiber cloth in a container; pouring distilled water into the container, and adding negative expansion particles into the distilled water; ultrasonically treating the liquid containing the negative expansion particles and carbon fiber so that the negative expansion particles are dispersed evenly; allowing the ultrasonically treated liquid to stand so that the negative expansion particles precipitate evenly onto the single-layer carbon fiber nonwoven or carbon fiber cloth so as to form a discontinuous reinforcement layer; making the single-layer carbon fiber nonwoven or carbon fiber cloth with negative expansion particles into a required laminated preform in a required laminating manner, and performing Z-directional puncture reinforcing with puncture fiber bundles so as to obtain fiber-negativeexpansion particle 2.5D multi-scale composite preform. The fiber preform prepared herein is suitable for the production of resin-based composites and light-metal-based composites, light in weight, high in strength, and low in thermal expansion coefficient.

Description

technical field [0001] The invention belongs to the field of fiber-reinforced composite materials, and in particular relates to a low / negative thermal expansion composite material 2.5D multi-scale prefabricated body and a preparation method thereof. Background technique [0002] With the development of science and technology, people put forward higher and higher requirements for the performance of materials. After metallic materials, inorganic non-metallic materials, and organic polymer materials, fiber-reinforced composite materials have been increasingly used in the fields of aerospace, automobiles, and sports equipment due to their advantages in specific strength, specific stiffness, and performance design. more applications. [0003] For fiber-reinforced composite materials, the fiber prefabricated body, as the main carrier in the composite material, directly determines the performance of the composite material. At present, the prefabricated body of advanced composite ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B9/00B32B9/04B32B5/06B32B3/08B32B38/00B32B38/16D06M11/48D06M101/40
CPCB32B3/08B32B5/02B32B5/06B32B5/26B32B38/00B32B38/164B32B2262/106B32B2307/718B32B2313/04D06M11/48D06M2101/40
Inventor 鞠录岩张建兵郭龙龙马玉钦
Owner XI'AN PETROLEUM UNIVERSITY