Preparation method of carbon fiber connecting ring

A connecting ring and carbon fiber technology, which is applied in the field of carbon fiber products, can solve problems such as cracking and radome falling off, and achieve the effect of improving strength and solving the mismatch of expansion coefficients

Active Publication Date: 2017-10-13
贵州航天风华精密设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the prior art, the connecting ring and the radome are bonded with glue processed by epoxy resin, and the radome falls off and breaks due to the temperature rise during the flight.

Method used

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  • Preparation method of carbon fiber connecting ring
  • Preparation method of carbon fiber connecting ring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A method for preparing a carbon fiber connecting ring, comprising the following steps:

[0036] (1) Glue coating: T700 carbon fiber cloth is used as the skeleton material, and the premixed rubber is evenly dipped on the T700 carbon fiber cloth;

[0037] (2) Winding: wrap the impregnated carbon fiber cloth on the mold core, and the mold core rotates evenly under the rotation of the motor until the mold core is wound to a suitable thickness;

[0038] (3) Curing: After winding, put it into room temperature for curing for 22 hours, then put it into 50°C for 22 hours, put it into 75°C for 22 hours, and put it into room temperature for 22 hours;

[0039] (4) Demoulding: After curing, demould at room temperature, and use conventional processing methods to obtain carbon fiber connecting rings.

[0040] The suitable thickness is 5.7mm.

[0041] The raw materials of the premixed glue are: 100 kg of epoxy resin, 15 kg of polyethylene polyamine, 10 kg of epoxy reactive diluent, 5...

Embodiment 2

[0044] A method for preparing a carbon fiber connecting ring, comprising the following steps:

[0045] (1) Glue coating: T700 carbon fiber cloth is used as the skeleton material, and the premixed rubber is evenly dipped on the T700 carbon fiber cloth;

[0046] (2) Winding: wrap the impregnated carbon fiber cloth on the mold core, and the mold core rotates evenly under the rotation of the motor until the mold core is wound to a suitable thickness;

[0047] (3) Curing: After winding, put it in room temperature for curing for 26 hours, then put it in 60°C for 26 hours, put it in 85°C for 26 hours, and put it in room temperature for 26 hours;

[0048] (4) Demoulding: After curing, demould at room temperature, and use conventional processing methods to obtain carbon fiber connecting rings.

[0049] The suitable thickness is 6.3mm.

[0050] The raw materials of the premixed glue are: 100 kg of epoxy resin, 20 kg of polyethylene polyamine, 15 kg of epoxy reactive diluent, 8 kg of d...

Embodiment 3

[0053] A method for preparing a carbon fiber connecting ring, comprising the following steps:

[0054] (1) Glue coating: T700 carbon fiber cloth is used as the skeleton material, and the premixed rubber is evenly dipped on the T700 carbon fiber cloth;

[0055] (2) Winding: wrap the impregnated carbon fiber cloth on the mold core, and the mold core rotates evenly under the rotation of the motor until the mold core is wound to a suitable thickness;

[0056](3) Curing: after winding, put it into room temperature for curing for 24 hours, then put it into 50°C for 24 hours, then put it into 80°C for 24 hours, and put it into room temperature for 24 hours;

[0057] (4) Demoulding: After curing, demould at room temperature, and use conventional processing methods to obtain carbon fiber connecting rings.

[0058] The suitable thickness is 6mm.

[0059] The raw materials of the premixed glue are: 100 parts of epoxy resin, 16 kg of polyethylene polyamine, 11 kg of epoxy reactive dilue...

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Abstract

The invention belongs to the technical field of carbon fiber product, and especially relates to a preparation method of a carbon fiber connecting ring. The preparation method comprises steps of gluing, winding, solidifying, and demoulding. In the preparation process, an appropriate premixed glue material is adopted, and the solidification temperature and the solidification time are adjusted at the same time so as to provide the obtained carbon fiber connecting ring with excellent comprehensive performance. The tensile modulus is 88Gpa, the compression strength is 212MPa, the average loosening torque is larger than 13.5N*m, the single bolt static load pullout strength is higher than 1t; and static test is carried out after bonding of the carbon fiber connecting ring with a antenna housing after cabin assembling, and it is found that the performance indexes are capable of satisfying requirements on missile total design index requirements.

Description

technical field [0001] The invention belongs to the technical field of carbon fiber products, in particular to a method for preparing a carbon fiber connecting ring. Background technique [0002] The main function of the seeker radome is to protect the seeker echo antenna and provide an electromagnetic window for the antenna. The radome is an integral part of the missile shell and has the function of rectification; the connecting ring is the connection between the radome and the cabin , during the flight of the missile, due to the friction between the connecting ring and the air, the surface temperature rises rapidly, and the connecting ring is required to withstand the external load acting on it and the thermal stress generated by aerodynamic heating during the entire use and flight of the missile , which requires the connecting ring to have sufficient strength; at the same time, the flight test cannot be failed due to the deformation of the connecting ring during the entir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08K7/06C08K5/12C08K3/34C08G59/50
CPCC08G59/502C08K3/34C08K5/12C08K7/06C08L63/00
Inventor 黄田燕赵小刚陈箐箐何晶李江
Owner 贵州航天风华精密设备有限公司
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