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Preparation method of revolved body type carbon/carbon composite material

A technology of carbon composite material and rotary body is applied in the field of preparation of rotary body-like carbon/carbon composite material, which can solve the problems of shortening the preparation cycle, and achieve the effects of shortening the densification cycle, improving the structure, and fully infiltrating

Active Publication Date: 2020-05-19
XIAN CHAOMA SCI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, in terms of shortening the preparation cycle and realizing efficient preparation while ensuring performance, there is currently no relevant research on a complete preparation method.

Method used

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  • Preparation method of revolved body type carbon/carbon composite material
  • Preparation method of revolved body type carbon/carbon composite material
  • Preparation method of revolved body type carbon/carbon composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The preparation method of this embodiment includes the following steps:

[0041] Step 1. Mandrel preparation: Determine the cylindrical carbon / carbon composite material with an inner diameter of 660mm, an outer diameter of 690mm, a wall thickness of 30mm, a length of 500mm, a high-temperature elliptical deformation not more than 3mm, and a density not less than 1.65g / cm. 3 , The hoop tensile strength is not less than 190MPa, and the interlayer shear strength is not less than 25MPa. According to the target product cylindrical carbon / carbon composite material and the heat treatment deformation law of the continuous carbon fiber used, design the outer surface shape and the target product cylinder Shape Carbon / carbon composite material has a metal core mold with the same inner surface shape, a length of 600mm and an outer diameter of 586mm. The outer surface of the metal core mold is cleaned with a cleaning agent, and then the outer surface of the cleaned metal core mold Lay po...

Embodiment 2

[0050] The preparation method of this embodiment includes the following steps:

[0051] The difference between this embodiment and embodiment 1 is that the design density of the target product carbon / carbon pot upper in step 1 is not less than 1.45g / cm 3 , The interlayer bonding strength is not less than 15MPa, the hoop tensile strength index is not less than 120MPa, the core mold material is electrode graphite, the outer diameter of the core mold is 597mm; the spiral winding angle in step two is 85°, and the hoop winding angle is 87°, the inner diameter of the winding part is 597mm, the outer diameter is 660mm, and the thickness is 31.5mm; in step 4, the inner diameter of the hot pressing mold is 670mm, and the gap between the winding part is 5mm, and the internal pressure heat treatment process is: (1) Under the pressure of 4MPa~8MPa, heat up to 150℃ at the rate of 20℃ / min~35℃ / min; (2) Then under the pressure of 4MPa~8MPa, heat up to the rate of 10℃ / min~35℃ / min 320°C and heat p...

Embodiment 3

[0054] The preparation method of this embodiment includes the following steps:

[0055] The difference between this embodiment and embodiment 1 is that the design density of the target product carbon / carbon pot upper in step 1 is not less than 1.55g / cm 3 , The interlayer bonding strength is not less than 22MPa, the hoop tensile strength index is not less than 170MPa, the core mold material is electrode graphite, the outer diameter of the core mold is 609mm; the spiral winding angle in step two is 55°, and the hoop winding angle is 89°, the inner diameter of the winding part is 609mm, the outer diameter is 690mm, and the thickness is 40.5mm; in step 4, the inner diameter of the hot pressing mold is 696mm, and the gap between the winding part is 3mm. The process of the internal pressure heat treatment is: (1) Under the pressure of 4MPa~8MPa, heat up to 150℃ at the rate of 20℃ / min~35℃ / min; (2) Then under the pressure of 4MPa~8MPa, heat up to the rate of 10℃ / min~35℃ / min 320℃ and heat...

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Abstract

The invention discloses a preparation method of a revolved body type carbon / carbon composite material. The method comprises the following steps: 1, cleaning a core mold, paving demolding cloth in thecore mold, and brushing the demolding cloth with a release agent; 2, winding continuous carbon fibers on the core mold coated with the release agent to form a wound part; 3, carrying out vacuum pressure impregnation on the wound part, performing demolding, and carrying out machining treatment to obtain an impregnated part; 4, applying a shaping tool to the outer surface of the impregnated part, and carrying out internal-pressurization heat treatment to obtain a green body of the revolved body type carbon / carbon composite material; and 5, strengthening the revolved body type carbon / carbon composite material blank to obtain the revolved body type carbon / carbon composite material. The thickness of the target composite material is achieved by introducing asphalt and adopting an external-shaping internal-pressurization heat treatment process and strengthening treatment; the volume content of carbon fibers in the revolved body type carbon / carbon composite material is increased, the performance of the revolved body type carbon / carbon composite material is improved, a densification period is shortened, and the preparation efficiency of the revolved body type carbon / carbon composite material is improved.

Description

Technical field [0001] The invention belongs to the technical field of composite material preparation, and specifically relates to a preparation method of a rotor-like carbon / carbon composite material. Background technique [0002] Carbon / carbon composite material is a carbon fiber reinforced carbon matrix composite material. It has a series of excellent properties such as high strength and high modulus, light specific gravity, low thermal expansion coefficient, corrosion resistance, thermal shock resistance, good friction resistance, and good chemical stability. A new type of ultra-high temperature composite material. Among them, rotator-like carbon / carbon composite materials have been widely used in civilian fields such as carbon / carbon crucibles, carbon / carbon hot pressing molds and other products such as single crystal silicon pulling and advanced ceramic hot pressing. [0003] Although carbon / carbon composites have many excellent properties, due to the high price, they are cu...

Claims

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Application Information

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IPC IPC(8): C04B35/83C04B35/84C04B35/645C04B41/81
CPCC04B35/83C04B35/645C04B41/81C04B41/009C04B41/4531C04B41/4505C04B2235/48C04B2235/6562C04B2235/6567C04B2235/96C04B2235/9607C04B2235/77
Inventor 赵松程皓彭志刚张灵玉党瑞萍张永辉
Owner XIAN CHAOMA SCI TECH
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