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Integral molding process of composite material reflector

A technology of composite materials and molding process, which is applied in the field of composite mirror integrated molding technology, can solve the problems of low surface shape accuracy, long preparation cycle, poor stability, etc., achieve universality and wide adaptability, improve preparation efficiency and Effect

Active Publication Date: 2020-02-21
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0005] The object of the present invention is to aim at the above-mentioned defects of the prior art, to provide an integrated molding process for composite material mirrors, to realize the integrated preparation of composite material mirror blanks and bases, and to solve the problem of existing composite material mirror blanks. The preparation and bonding of the base and the base separately lead to problems such as low surface accuracy, poor stability, and long preparation cycle

Method used

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  • Integral molding process of composite material reflector
  • Integral molding process of composite material reflector
  • Integral molding process of composite material reflector

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Embodiment 1

[0036] The parameters of the long-wave infrared carbon fiber mirror to be prepared are as follows: the thickness is 4.8mm, the aperture is 200mm, the radius of curvature is 700mm, the surface accuracy RMS is λ / 30 (λ=10.6μm), and the base type can be used.

[0037] The integrated molding process of the long-wave infrared carbon fiber mirror includes the following steps:

[0038] Step 1: Determine the design plan of the mirror blank according to the diameter, thickness, radius of curvature, surface shape accuracy, and base support type of the mirror, and optimize the support form of the base.

[0039] Among them, based on the classical laminate theory, the composite material is selected as carbon fiber prepreg T700, and the lay-up scheme is determined as [0 90 45 -45] 12S . Moreover, the base support form is selected through design simulation analysis as follows: figure 1 (b) shown.

[0040] Step 2: According to the design plan of the mirror blank and the base, use the compos...

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Abstract

The invention provides an integral molding process of a composite material reflector. A splicing mold is designed by adopting a composite material mold differential splicing technology; a composite material is pasted or wound in each sub-mold of the splicing mold in sequence, and curing molding is performed on the composite material after the sub-molds are assembled integrally through splicing, sothat an integrated composite material reflector blank and an integrated composite material base are formed. In the integral molding process, adhesive bonding is not needed, the preparation efficiencyand the material consistency are improved, the problems that an existing reflector and an existing base are separately prepared and then bonded, so that the surface figure accuracy is low, the stability is low, and the preparation cycle is relatively longer are solved, and the integral molding process is suitable for preparing various special-shaped reflector blanks and various special-shaped reflector bases, and is wide in generality and adaptability.

Description

technical field [0001] The invention relates to the technical field of preparation of composite material mirrors, in particular to an integrated molding process of composite material mirrors. Background technique [0002] With the continuous advancement of composite material production and preparation technology, and its own characteristics of low density, high specific stiffness, and strong designability, it has become one of the important candidate substrates for large-diameter and lightweight mirrors. At present, the preparation of composite material mirrors generally adopts the method of embossing and replicating the high-precision surface of the mold to first prepare the mirror blank, then cut it into a rib plate with a composite material flat substrate, bond the rib plate into a base by glue bonding, and finally The base and the mirror blank are bonded and fixed by glue bonding, and the composite mirror mirror blank and the whole base are prepared, and then the composi...

Claims

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Application Information

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IPC IPC(8): B29C70/44B29C70/54B29C33/00B29C33/60B29L11/00
CPCB29C33/00B29C33/60B29C70/443B29C70/54B29C70/543B29L2011/0083
Inventor 程路超刘震宇宫鹏张玥余毅何锋赟王晓明
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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