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Fabrication process of carbon fiber concave mirror

A concave mirror and a preparation technology, which are applied to mirrors, other household appliances, household appliances, etc., can solve the problems of high cost, difficult mold processing, and high requirements for testing instruments, so as to achieve low cost, reduce surface shape changes, Good matching of thermal expansion

Active Publication Date: 2018-06-22
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this preparation process is only simple and easy for carbon fiber convex mirrors and carbon fiber flat mirrors, but concave carbon fiber mirrors (especially spherical and aspherical mirrors) need to grind optical glass to prepare convex molds. Due to the divergence of the reflective surface during the preparation, the mold processing is difficult, and when the surface accuracy is tested, the requirements for the detection instrument are high, and there are problems such as high cost

Method used

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  • Fabrication process of carbon fiber concave mirror

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Embodiment 1

[0027] The parameters of the long-wave infrared carbon fiber mirror to be prepared are as follows: the thickness is 4.8 mm, the diameter is 200 mm, the radius of curvature is 700 mm, and the RMS surface accuracy is λ / 40 (λ=10.6 μm).

[0028] The preparation process of the above-mentioned long-wave infrared carbon fiber mirror is as follows:

[0029] Step 1, using glass-ceramic as material, grinding and processing, making a concave mirror mold 1 with a diameter of 200mm, a radius of curvature of 700mm, and a surface shape of λ / 20 (λ=632nm);

[0030] Step 2: Apply release agent (AXEL XTEND 818) on the surface of the concave mirror mold 1 to form the first release layer, and lay 120 layers of T700 carbon fiber prepreg on the first release layer, each layer with a thickness of 0.04mm , the laid carbon fiber prepreg cloth is cured and molded by vacuum bag process (molding temperature 120°C), and a convex carbon fiber mirror mold 2 with a surface shape of / 40 (λ=10.6 μm) is obtained...

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Abstract

The invention relates to a preparation process of a carbon fiber concave reflector, which belongs to the technical field of optical element preparation. The invention solves the problems of high manufacturing process cost of the carbon fiber concave reflector, difficult mold processing and the like in the prior art. In the preparation process of the present invention, optical glass is firstly used as a material to prepare a concave reflector mold having the same structure as the carbon fiber concave reflector to be prepared, and then a release agent is applied on the concave reflector mold and multiple layers are spread on the release agent. layer of carbon fiber prepreg, solidify and mold the laid carbon fiber prepreg, and demould to obtain a convex carbon fiber mirror mold, and then apply a release agent on the convex carbon fiber mirror mold and lay multiple layers of carbon fiber prepreg on the release agent. Soak the cloth, solidify and mold the laid carbon fiber prepreg cloth, and demould to obtain a concave carbon fiber reflector blank; finally, carry out surface treatment on the concave carbon fiber reflector blank to obtain a carbon fiber concave reflector. The preparation process is simple and easy, the cost is low, and the prepared reflection mirror has high precision.

Description

technical field [0001] The invention relates to a preparation process of a carbon fiber concave reflector, belonging to the technical field of optical element preparation. Background technique [0002] Carbon fiber mirror is a mirror made of carbon fiber composite material. It has the advantages of low density, excellent thermal performance, high specific strength and high specific stiffness. Therefore, compared with metal mirrors and glass mirrors, it can better meet the requirements of optical reflection. Therefore, in recent years, it has been widely used in space exploration, satellite remote sensing, satellite reconnaissance and other fields. [0003] The types of carbon fiber mirrors are carbon fiber concave mirrors, carbon fiber convex mirrors, and carbon fiber flat mirrors. In the prior art, the preparation process of the carbon fiber mirror is: use optical glass grinding to match the carbon fiber mirror mold with the mirror surface of the carbon fiber mirror to be ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/10B29C70/42B29L11/00
CPCB29C70/42B29L2011/0016G02B5/10
Inventor 刘震宇程路超王强龙谢军何锋赟余毅
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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