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Composite for radome and method of utilizing composite to prepare radome

A composite material and radome technology, applied in the field of composite material molding, can solve the problems of low wave transmittance, high dielectric constant of ordinary FRP, affecting radar signal transmission, etc. The effect of construction difficulties

Inactive Publication Date: 2017-08-08
青岛百适优复合材料制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a composite material for a radome and a method for preparing a radome by using the composite material, aiming to solve the problem that ordinary FRP has a large dielectric constant and low wave transmittance, which affects the transmission of radar signals

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Utilize the method for preparing radome with composite material, the radome is prepared by compression molding method, and the compression molding method is:

[0022] Apply a release agent on the surface of the cavity of the radome molding mold;

[0023] Cut the SMC sheet, load it, heat press and cure it, demould and trim it;

[0024] Process requirements: molding temperature 150°C; holding time 15min; mold closing time 50s; molding pressure 400Kpa, holding time 1h.

[0025] Wherein, the composite material used in Example 1 is made by mixing glass fibers and resin, the weight ratio of the glass fibers to the resin is 3:2, the glass fibers are D fibers, the Log3 viscosity temperature is less than 1300° C., and the liquefaction temperature is less than 1100° C. ℃, fiber fineness 6tex, fiber product 100g / m 2 . The epoxy resin is a diphenolic propane side chain type epoxy resin with a bending strength of 110-135Mpa; a bending modulus of 3200-3800Mpa; a tensile strength o...

Embodiment 2

[0028] Utilize the method for preparing radome with composite material, the radome is prepared by compression molding method, and the compression molding method is:

[0029] Apply a release agent on the surface of the cavity of the radome molding mold;

[0030] Cut the SMC sheet, load it, heat press and cure it, demould and trim it;

[0031] Process requirements: molding temperature 145°C; holding time 15min; mold closing time 40s; molding pressure 300Kpa, holding time 1h.

[0032] Wherein, the composite material used in Example 2 is made by mixing glass fiber and resin, the weight ratio of the glass fiber to the resin is 2.5:2.5, the glass fiber is D fiber, the Log3 viscosity temperature is less than 1300°C, and the liquefaction temperature is less than 1100°C ℃, fiber fineness 6tex, fiber product 100g / m 2 . The epoxy resin is a diphenolic propane side chain type epoxy resin with a bending strength of 110-135Mpa; a bending modulus of 3200-3800Mpa; a tensile strength of 50-...

Embodiment 3

[0035] Utilize the method for preparing radome with composite material, the radome is prepared by compression molding method, and the compression molding method is:

[0036] Apply a release agent on the surface of the cavity of the radome molding mold;

[0037] Cut the SMC sheet, load it, heat press and cure it, demould and trim it;

[0038] Process requirements: molding temperature 155°C; holding time 15min; mold clamping time 60s; molding pressure 500Kpa, holding time 1h.

[0039] Wherein, the composite material used in Example 3 is made by mixing glass fiber and resin, the weight ratio of the glass fiber to the resin is 3.5:1.5, the glass fiber is D fiber, the Log3 viscosity temperature is less than 1300°C, and the liquefaction temperature is less than 1100°C ℃, fiber fineness 6tex, fiber product 100g / m 2 . The epoxy resin is a diphenolic propane side chain type epoxy resin with a bending strength of 110-135Mpa; a bending modulus of 3200-3800Mpa; a tensile strength of 50...

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Abstract

The invention discloses a composite for a radome and a method of utilizing the composite to prepare the radome. The composite is prepared by mixing glass fibers and resin, wherein the weight ratio of the glass fibers to the resin is (2.5-3.5) to (1.5-2.5), and in a preferred embodiment, the weight ratio of the glass fibers to the resin is 3 to 2. The weight ratio in the preferred embodiment can enable a wall thickness tolerance of the radome to reach within 0.1mm, and the preferred component ratio can enable the prepared composite to have the effects of very low dielectric constant and high wave transmission rate, so that the requirements of material selection of the radome is met to be beneficial to transmitting a radar signal, and at the same time, the problem of difficulty in construction caused by increased ratio of the glass fibers is solved.

Description

technical field [0001] The invention relates to the technical field of composite material molding, in particular to a composite material for a radome and a method for preparing a radome with the composite material. Background technique [0002] Ordinary FRP has a large dielectric constant and low wave transmittance, so it is used as a radome, which affects the transmission of radar signals. [0003] Therefore, the prior art still needs further improvement and development. Contents of the invention [0004] The purpose of the present invention is to provide a composite material for a radome and a method for preparing a radome by using the composite material, aiming at solving the problem that ordinary FRP has a large dielectric constant and low wave transmittance, which affects the transmission of radar signals. [0005] The technical solutions adopted are: [0006] A composite material for a radome is made by mixing glass fiber and resin, wherein the weight ratio of glas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08K7/14B29C43/02B29C43/58
CPCC08K7/14B29C43/003B29C43/02B29C43/58B29C2043/5808B29C2043/5816C08L63/00
Inventor 王海强
Owner 青岛百适优复合材料制造有限公司
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