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Device and method for preparing directionally-distributed chopped carbon fiber reinforced composite material

A technology of reinforced composite materials and chopped carbon fibers, which is applied in the direction of clay preparation equipment, clay mixing equipment, chemical instruments and methods, etc., can solve the problems such as the inability of fibers to be oriented, and achieve the effect of improving the degree of automation and improving work efficiency

Pending Publication Date: 2021-04-09
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a device and method for preparing a directional distribution chopped carbon fiber reinforced composite material, which solves the problem that the fibers cannot be oriented in the traditional short fiber reinforced ceramic matrix composite material forming method

Method used

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  • Device and method for preparing directionally-distributed chopped carbon fiber reinforced composite material
  • Device and method for preparing directionally-distributed chopped carbon fiber reinforced composite material
  • Device and method for preparing directionally-distributed chopped carbon fiber reinforced composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0045] see figure 1 and Figure 6 Shown:

[0046] In this embodiment, a directional distributed chopped carbon fiber reinforced hydroxyapatite-based composite material is prepared, including the following steps:

[0047] Step 1: Select the composition and mass percentage of raw materials

[0048] Chopped carbon fiber 0.5%: chopped carbon fiber average diameter 7μm, length 2-3mm;

[0049] Dispersant system 2%: the amount of surfactant 1%; the amount of dispersant 1%, the dispersant is composed of polyethylene oxide (PEO) and polyacrylamide (PAM) with a mass ratio of 3:1;

[0050] Matrix material 97.5%: hydroxyapatite powder;

[0051] Step 2: Pre-dispersion of Chopped Carbon Fiber

[0052] Take a beaker, pour the weighed chopped carbon fiber, surfactant, and dispersant into the beaker, then add a certain amount of deionized water, and stir with a glass rod to disperse the chopped carbon fiber evenly; then extend the ultrasonic probe into In the liquid, with a power of 800W...

Embodiment 2

[0061] The steps of this embodiment and embodiment 1 are the same, and the difference is that the components of the raw materials in step 1 are different. In the present embodiment, the mass percentages of the raw materials are as follows:

[0062] Chopped carbon fiber 0.3%: chopped carbon fiber average diameter 7μm, length 2-3mm;

[0063] Dispersant system 2%: the amount of surfactant is 0.4%; the amount of dispersant is 1.6%, and the dispersant is composed of polyethylene oxide (PEO) and polyacrylamide (PAM) with a mass ratio of 3:1;

[0064] The balance is matrix material.

Embodiment 3

[0066] The steps of this embodiment and embodiment 1 are the same, and the difference is that the components of the raw materials in step 1 are different. In the present embodiment, the mass percentages of the raw materials are as follows:

[0067] Chopped carbon fiber 0.8%: chopped carbon fiber average diameter 7μm, length 2-3mm;

[0068] Dispersant system 1%: the amount of surfactant is 0.2%; the amount of dispersant is 0.8%, and the dispersant is composed of polyethylene oxide (PEO) and polyacrylamide (PAM) with a mass ratio of 3:1;

[0069] The balance is matrix material.

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Abstract

The invention discloses a device and a method for preparing a directionally-distributed chopped carbon fiber reinforced composite material, and belongs to the technical field of composite material preparation. Three processes of feeding, stirring and extruding are organically combined through the design and combination of a multi-structure device. Through a stirrer, when chopped carbon fibers and ceramic powder are mixed, the chopped carbon fibers are more uniformly distributed in the ceramic, so that the purpose of uniformly mixing the slurry is achieved. In the extrusion process, in consideration of the difficulties that chopped carbon fibers are prone to being agglomerated, difficult to orient and the like, uniformly distributed orientation holes are formed between an outlet in the right end of an extrusion cavity and a nozzle, and the inner diameters of the orientation holes are designed to be nine tenths of the lengths of the chopped carbon fibers; and therefore, the chopped carbon fibers in the slurry flowing out of the orientation holes are highly oriented.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and in particular relates to a preparation device and method for directional distributed chopped carbon fiber reinforced composite material. Background technique [0002] Ceramic materials are not only light in weight and high in melting point, but also have good corrosion resistance and oxidation resistance, and are widely used in special fields such as aerospace, medical treatment, and military industry. However, the high brittleness and poor toughness of the ceramic material itself lead to poor reliability during use, which greatly limits its application range. In order to improve the performance of ceramic materials, a new material is added to ceramic materials, among which the effect of fiber reinforced ceramic matrix composites is the most prominent. Advantages, while gaining new features. Chopped carbon fiber reinforced ceramic matrix composites not only have the a...

Claims

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Application Information

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IPC IPC(8): B28B3/24B28B3/26B28B17/00B28C3/00C04B35/80C04B35/447C04B35/634
CPCB28B3/24B28B3/26B28B17/00B28C3/00C04B35/447C04B35/63444C04B35/63488C04B2235/5248C04B2235/6562C04B2235/6567
Inventor 赵雪妮杨智桂珍珍马林林刘傲魏森森郑佳梅赵振洋
Owner SHAANXI UNIV OF SCI & TECH
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