An integrated molding process for composite mirrors
A technology of composite materials and molding process, which is applied in the field of integrated molding technology of composite mirrors, can solve the problems of low surface shape accuracy, poor stability, and long preparation cycle, and achieve improved preparation efficiency, versatility, and wide adaptability Effect
Active Publication Date: 2021-01-15
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
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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 integrated molding process for composite material mirrors, which adopts composite material mold differential splicing technology, and is designed as a splicing mold, and is spliced and assembled into a whole by laying or winding composite materials on each sub-mould of the splicing mold in sequence Finally, the composite material is solidified and formed to obtain an integrated composite material mirror blank and base. The integrated molding process of the composite mirror of the present invention does not require adhesive bonding, improves the preparation efficiency and the consistency of the material, and solves the problem of low and stable surface shape accuracy caused by the separate preparation and rebonding of the existing mirror blank and the base It is suitable for the preparation of various special-shaped mirror blanks and bases, and has wide versatility 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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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