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Method for preparing phenolic resin system Z-pin by using twisted carbon fibers

A technology of twisting carbon fiber and phenolic resin, which is applied in the preparation of carbon fiber\phenolic resin system Z-pin, and in the field of composite material manufacturing, to achieve the effect of good bonding state, improved implantation depth, and stable production

Inactive Publication Date: 2014-09-10
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] The object of the present invention is to provide a kind of manufacturing method of carbon fiber / phenolic resin system Z-pin, utilize twisting treatment to carbon fiber to solve the air bubble defect that phenolic resin solidifies volatile matter in Z-pin preparation process, is carbon fiber / phenolic resin System ablation-resistant and heat-resistant composite materials provide reinforcement

Method used

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  • Method for preparing phenolic resin system Z-pin by using twisted carbon fibers
  • Method for preparing phenolic resin system Z-pin by using twisted carbon fibers

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Embodiment Construction

[0011] This example illustrates the preparation method of the twisted carbon fiber reinforced phenolic resin system Z-pin provided by the present invention.

[0012] ① Use T300 carbon fiber to place figure 1 On the line twisting device in the middle, the fibers are sequentially passed through figure 1 The fiber guiding device 2, the dipping device 3, the pultrusion die 4, the post-curing device 5, the traction device 6, and the winding device 7 in the fiber online twisting device 1 are set to the rotation speed of the rotating shaft and the pultrusion of the pultrusion die 4. Speed, the fiber twist obtained is 80 twists / meter.

[0013] ②Put the B30 phenolic resin in a vacuum oven for 60°C and 1h defoaming treatment, then pour it into the glue tank for use.

[0014] ③ Set the mold temperature to 90°C, and the post-curing device temperature to 180°C.

[0015] ④ After the system is stable, turn on the traction device.

[0016] ⑤ Check that the Z-pin diameter is 0.5±0.01mm, an...

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Abstract

The invention discloses a method for preparing phenolic resin system Z-pin by using twisted carbon fibers, wherein reinforcing materials for extruding and forming the Z-pin are the twisted carbon fibers with twist degree of 80-100 t / m. The method uses the twisted fibers to generate pressure on a resin matrix to restrain the growth of bubbles in phenolic resin, and modifies the defect of generation of air holes in the Z-pin products due to volatilization of phenolic resin curing products. The obtained Z-pin products can be used for reinforcing ablation-resisting and heat-preventing composite materials of a carbon fiber / phenolic resin system, and prominently modify the stripping resistance and the scouring resistance.

Description

technical field [0001] The invention relates to a preparation method of a carbon fiber / phenolic resin system Z-pin, and belongs to the technical field of composite material manufacturing methods. Background technique [0002] Phenolic resin-based composite materials are commonly used thermal protection materials at present, and are widely used in the return capsules of various manned spacecraft, rockets and missile terminals. The anti-scouring ability is difficult to meet the higher requirements for use. In order to solve this problem, Li Ning (Li Ning. Research on the preparation process and performance of Z-pin reinforced phenolic laminates [D]. Nanjing University of Aeronautics and Astronautics, 2012.) published a paper, using the quartz \ phenolic system Z-pin can improve the quartz \ phenolic resin Interlayer bonding strength of system composites. However, for the carbon fiber system ablation-resistant composite material, due to the mismatch of material properties suc...

Claims

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Application Information

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IPC IPC(8): B29C70/52
CPCB29C70/52B29C70/54
Inventor 李勇张向阳还大军文立伟肖军褚奇奕
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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