Method for preparing chopped carbon fiber reinforced amorphous composite material and a device thereof

A technology of amorphous composite material and chopped carbon fiber, which is applied in the field of preparation of chopped carbon fiber reinforced amorphous composite material, can solve the problems of fast cooling speed, poor wettability, low cooling rate, etc., and achieves small negative damage and improved Wetting property, effect of improving wettability

Active Publication Date: 2021-03-26
HEBEI UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method has a low cooling rate, it is difficult to reach more than 100K/s, and it is impossible to prepare composite materials for more amorphous alloy systems
CN101250677A discloses a titanium dioxide carbon coating carbon fiber reinforced magnesium-based composite material, which is mainly composed of matrix magnesium alloy and TiO 2 Coated carbon fiber composition, carbon fiber surface TiO 2 The coating is made by sol-gel method, and the raw material of magnesium alloy is SF 6 and CO 2 Mixed gas protection, heating up to 700°C to melt the alloy, will have TiO 2 The coated carbon fiber is preheated to 400°C, placed in a metal mold preheated to 200°C, the molten alloy liquid is cast into the metal mold, and formed under pressure, the extrusion pressure is 10MPa, and the pressure holding time is 60 seconds. TiO 2 Coated carbon fiber reinforced magnesium matrix composites, which have the disadvantage that this method is only applicable to the traditional magnesium alloy matrix, and cannot achieve a faster cooling rate and obtain an amorphous matrix
CN111155038A discloses a method for preparing a chopped carbon fiber reinforced magnesium-based composite material. The method uses a sol-gel method to prepare an oxide coating on the surface of a carbon fiber, which has a high oxygen content in the alloy and is not conducive to the non-uniformity of the matrix structure of the composite material. The preparation process of crystal

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  • Method for preparing chopped carbon fiber reinforced amorphous composite material and a device thereof
  • Method for preparing chopped carbon fiber reinforced amorphous composite material and a device thereof
  • Method for preparing chopped carbon fiber reinforced amorphous composite material and a device thereof

Examples

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Example Embodiment

[0043] figure 1 The embodiment shown indicates that the components of the apparatus used in the preparation method of the short-cut carbon fiber reinforced amorphous composite, including: intake port 1, closed high vacuum induction heating induction furnace body 2, the lower end of the rough tube portion A quartz pipe 3 having a diameter of 0.5mm to 2 mm spout, a water-cooling sensing heating coil 4, a high temperature cement 6, a split copper mold 8 having a diameter of 2 mm to 30 mm, and a closed furnace body 2 is provided for gas The valve 9 of the exit connection vacuum system; the connection mode of the respective constituent members of the apparatus is: the split copper mold 8 is placed in the interior of the closed furnace body 2, and the water-cooling sensing heating coil 4 is disposed in the rough tube of the quartz pipe 3. The spout portion of the quartz tube 3 is in contact with the inner cavity of the split copper mold 8 in the top of the split copper mold 8 and uses ...

Example Embodiment

[0050] Example 1

[0051] The constituent member of the apparatus used by the preparation method of short-cut carbon fiber reinforced amorphous composite is: intake port 1, closed high vacuum induction heating spray casting furnace body 2, the lower end of the rough tube portion is 0.5mm ~ The quartz tube 3 of the 2mm spout, the water-cooling sensing should be heated to heat the coil 4, the high temperature cement 6, a split copper mold 8 having a diameter of 2 mm to 30 mm, and a closed furnace body 2 is provided with a connection vacuum system for gas outlet. Valve 9; the connection method of each constituent member of the apparatus is that the split copper mold 8 is placed in the center position of the closed furnace body 2, and the water-cooling sensing heating coil 4 is disposed around the rough tube portion of the quartz pipe 3, quartz tube The spout portion is in contact with the end of the split copper mold 8 and the inner cavity of the split copper mold 8 and the high-temp...

Example Embodiment

[0055] Example 2

[0056] First step, short cut carbon fiber chemical plating:

[0057] The commercial T800 carbon fiber is used, and then the screen is used to sieve by 400 mesh screen. The short-cut carbon fiber is taken under the sieve to obtain a short cut carbon fiber having a length of 30 μm, and the chucking carbon fiber is chemically copper-plated, and the process comprises: front treatment → Sensitization, activation → restore → plating, wherein the pre-treatment is soaked using a burning method and an organic solvent. The specific process is 1 h in a heating furnace of 420 ° C, then uses acetone to immember 1 h, then use alcohol ultrasound 15 min, dry After the cryogen is roughly rinsed, then repeatedly rinsed all residual nitric acids, then alcohol dehydrate, and then dried by alcohol; sensitizes, the activation of carbon fibers are placed in sensitization - the mechanical stirring for 15 min. Sensitization - The formulation of activated liquid is chlorinated 30g / L, a...

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Abstract

The invention discloses a method for preparing a chopped carbon fiber reinforced amorphous composite material and a device thereof, and relates to the technical field of forming an amorphous compositematerial by contacting fibers with molten metal and performing rapid solidification. The method adopts a chemical plating method to improve the wettability of the carbon fibers, a carbon fiber preform is prepared through a copper mold, furthermore, the chopped carbon fiber reinforced amorphous composite material is prepared by using a vacuum low-pressure casting method, namely a spray casting method, and the defects that in the prior art, the fiber agglomeration phenomenon caused by non-uniform dispersion of reinforced fibers in a matrix or an interface structure with brittleness equal to that generated by the carbon fibers and the matrix at an interface, the method is only suitable for a traditional magnesium alloy matrix, a high cooling speed cannot be achieved, an amorphous matrix cannot be obtained, and the amorphous composite material cannot be prepared for various amorphous alloy matrixes needing vacuum melting are overcome.

Description

technical field [0001] The technical solution of the present invention relates to the technical field of forming amorphous composite materials through rapid solidification by contacting fibers with molten metal, in particular to the preparation method and device of chopped carbon fiber reinforced amorphous composite materials. Background technique [0002] Due to its high specific strength, high specific modulus and good high temperature performance, carbon fiber reinforced metal matrix composites have attracted widespread attention in many high-tech fields such as automobiles, aviation and aerospace. With the rapid development of aviation technology, the proportion of various carbon fiber composite materials used in the manufacture of new passenger aircraft is increasing, showing attractive development prospects. Traditional carbon fiber reinforced metal matrix composites are mainly based on alloys such as aluminum alloys and magnesium alloys with low density and good plast...

Claims

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Application Information

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IPC IPC(8): C22C45/10C22C45/00C22C49/11C22C49/10C22C49/04C22C49/14C22C47/04C22C47/06C22C47/16C22C47/18B22D18/06B22D18/04C22C101/10C22C121/02
CPCC22C45/10C22C45/005C22C49/11C22C49/10C22C49/04C22C49/14C22C47/04C22C47/06C22C47/16C22C47/18B22D18/06B22D18/04
Inventor 王新尹海龙赵立臣刘水清崔春翔
Owner HEBEI UNIV OF TECH
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