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Fiber reinforced composite dot matrix core board mold and wet method preparation process

A composite material and fiber-reinforced technology, which is applied in the mold and wet preparation process of fiber-reinforced composite lattice sandwich panels, can solve the problem of fiber-reinforced composite lattice sandwich panels without fiber-reinforced composite lattice sandwich cores. board and other issues, to achieve the effect of low cost, high specific strength, and convenient operation

Inactive Publication Date: 2010-05-19
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is currently no mold for making fiber-reinforced composite lattice sandwich panels and a wet process for making fiber-reinforced composite lattice sandwich panels using this mold

Method used

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  • Fiber reinforced composite dot matrix core board mold and wet method preparation process
  • Fiber reinforced composite dot matrix core board mold and wet method preparation process
  • Fiber reinforced composite dot matrix core board mold and wet method preparation process

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0014] Specific implementation mode one: as Figure 1~2 As shown, the mold of the fiber-reinforced composite lattice sandwich panel in this embodiment includes a plurality of mold units 1 and two fixing bars 2, the cross-section of each mold unit 1 is non-isosceles trapezoidal, each mold There are multiple pairs of first semicircular through-holes 1-1 on an inclined surface of the monomer 1, and the first semicircular through-holes 1-1 communicate with the upper and lower surfaces of the mold monomer 1, and each pair of first semicircular through-holes 1-1 The through holes 1-1 are arranged in a figure-eight shape, and the included angles between the centerlines of the first semicircular through holes 1-1 and the horizontal line are equal. A second semicircular through hole 1-2 is opened at the corresponding position of the circular through hole 1-1, and the centerline of the second semicircular through hole 1-2 is aligned with the corresponding pair of first semicircular thro...

specific Embodiment approach 2

[0015] Specific implementation mode two: as figure 1 As shown, the mold in this embodiment also includes a plurality of hard metal strips 3 with a circular cross section, and a third circular through hole 1-3 is opened at the center of each mold unit 1 along the length direction. A circular hard metal strip 3 is fixed in the third circular through hole 1-3 on each mold unit 1 . Such a design can prevent the mold unit 1 from being deformed along the length direction and play the role of a skeleton.

[0016] Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0017] Specific implementation mode three: as figure 1 As shown, the wet process steps of the fiber-reinforced composite lattice sandwich panel in this embodiment are as follows:

[0018] Step 1, mold treatment: clean the surface of the mold with acetone solution, and then treat the outer surface of the mold with a release agent;

[0019] Step 2. Fix the mold: Fix the mold with a fixture;

[0020] Step 3, rolling fiber column: roll the fiber column with prepreg, keep the fiber direction the same as the axial direction of the fiber column, the diameter of the rolled fiber column is the same as the first circular through hole 1-1-1 and the second The diameters of the circular through holes 1-2-1 are the same, and the number of rolled fiber columns is the sum of the number of the first circular through holes 1-1-1 and the number of the second circular through holes 1-2-1 , the length of the rolled fiber column is 40-50 mm longer than the length of the first circular through hol...

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Abstract

The invention provides a fiber reinforced composite dot matrix core board mold and a wet method preparation process and relates to a mold and a wet process preparation process; the invention solves the problems that at present, no mold can manufacture the fiber reinforced composite dot matrix core board specially and no wet method preparation process can prepare the fiber reinforced composite dot matrix core board by utilizing the mold; a plurality of mold monomers are tiled at interval in an upright-inverting way to form a panel shape, and a plurality of the mold monomers are arranged between the two fixing bars; the preparation process comprises the following steps: step I: mold processing; step II: mold fixation; step III: fiber column rolling; step IV: fiber spreading and pre-impregnating; step V: pressurizing and curing; step VI: demolding. The fiber reinforced composite dot matrix core board mold has simple structure, low cost and convenient operation; the fiber reinforced composite dot matrix core board prepared by the wet method preparation process has higher specific strength and specific stiffness compared with the traditional metal dot matrix core board.

Description

technical field [0001] The invention relates to a mold for a lattice sandwich panel of fiber composite material and a process for preparing a lattice sandwich panel of fiber composite material by using the mold. Background technique [0002] Compared with metal materials, fiber reinforced composite materials have higher specific strength and specific stiffness. Most of the materials used in the existing research on the lattice sandwich panel structure are metal materials, and the preparation methods are based on the wire weaving process based on the network lamination spot welding method, investment casting process and microcontact printing. Rolling-plating welding process based on technology. The existing metal material lattice sandwich panel is difficult to form, while the composite material lattice sandwich panel has higher specific strength and specific stiffness compared with the traditional metal lattice sandwich panel, and is easier to form and has stronger reliabili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/54B29C33/00B29C70/34
Inventor 张国旗吴林志王兵马力王明亮
Owner HARBIN INST OF TECH
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